Deleted vendor folder

52 files changed, 0 insertions, 45523 deletions

diff --git a/vendor/syn/src/attr.rs b/vendor/syn/src/attr.rs
deleted file mode 100644
index b6c4675..0000000
--- a/vendor/syn/src/attr.rs
+++ /dev/null
@@ -1,776 +0,0 @@
-use super::*;
-use proc_macro2::TokenStream;
-use std::iter;
-use std::slice;
-
-#[cfg(feature = "parsing")]
-use crate::meta::{self, ParseNestedMeta};
-#[cfg(feature = "parsing")]
-use crate::parse::{Parse, ParseStream, Parser, Result};
-
-ast_struct! {
-    /// An attribute, like `#[repr(transparent)]`.
-    ///
-    /// <br>
-    ///
-    /// # Syntax
-    ///
-    /// Rust has six types of attributes.
-    ///
-    /// - Outer attributes like `#[repr(transparent)]`. These appear outside or
-    ///   in front of the item they describe.
-    ///
-    /// - Inner attributes like `#![feature(proc_macro)]`. These appear inside
-    ///   of the item they describe, usually a module.
-    ///
-    /// - Outer one-line doc comments like `/// Example`.
-    ///
-    /// - Inner one-line doc comments like `//! Please file an issue`.
-    ///
-    /// - Outer documentation blocks `/** Example */`.
-    ///
-    /// - Inner documentation blocks `/*! Please file an issue */`.
-    ///
-    /// The `style` field of type `AttrStyle` distinguishes whether an attribute
-    /// is outer or inner.
-    ///
-    /// Every attribute has a `path` that indicates the intended interpretation
-    /// of the rest of the attribute's contents. The path and the optional
-    /// additional contents are represented together in the `meta` field of the
-    /// attribute in three possible varieties:
-    ///
-    /// - Meta::Path &mdash; attributes whose information content conveys just a
-    ///   path, for example the `#[test]` attribute.
-    ///
-    /// - Meta::List &mdash; attributes that carry arbitrary tokens after the
-    ///   path, surrounded by a delimiter (parenthesis, bracket, or brace). For
-    ///   example `#[derive(Copy)]` or `#[precondition(x < 5)]`.
-    ///
-    /// - Meta::NameValue &mdash; attributes with an `=` sign after the path,
-    ///   followed by a Rust expression. For example `#[path =
-    ///   "sys/windows.rs"]`.
-    ///
-    /// All doc comments are represented in the NameValue style with a path of
-    /// "doc", as this is how they are processed by the compiler and by
-    /// `macro_rules!` macros.
-    ///
-    /// ```text
-    /// #[derive(Copy, Clone)]
-    ///   ~~~~~~Path
-    ///   ^^^^^^^^^^^^^^^^^^^Meta::List
-    ///
-    /// #[path = "sys/windows.rs"]
-    ///   ~~~~Path
-    ///   ^^^^^^^^^^^^^^^^^^^^^^^Meta::NameValue
-    ///
-    /// #[test]
-    ///   ^^^^Meta::Path
-    /// ```
-    ///
-    /// <br>
-    ///
-    /// # Parsing from tokens to Attribute
-    ///
-    /// This type does not implement the [`Parse`] trait and thus cannot be
-    /// parsed directly by [`ParseStream::parse`]. Instead use
-    /// [`ParseStream::call`] with one of the two parser functions
-    /// [`Attribute::parse_outer`] or [`Attribute::parse_inner`] depending on
-    /// which you intend to parse.
-    ///
-    /// [`Parse`]: parse::Parse
-    /// [`ParseStream::parse`]: parse::ParseBuffer::parse
-    /// [`ParseStream::call`]: parse::ParseBuffer::call
-    ///
-    /// ```
-    /// use syn::{Attribute, Ident, Result, Token};
-    /// use syn::parse::{Parse, ParseStream};
-    ///
-    /// // Parses a unit struct with attributes.
-    /// //
-    /// //     #[path = "s.tmpl"]
-    /// //     struct S;
-    /// struct UnitStruct {
-    ///     attrs: Vec<Attribute>,
-    ///     struct_token: Token![struct],
-    ///     name: Ident,
-    ///     semi_token: Token![;],
-    /// }
-    ///
-    /// impl Parse for UnitStruct {
-    ///     fn parse(input: ParseStream) -> Result<Self> {
-    ///         Ok(UnitStruct {
-    ///             attrs: input.call(Attribute::parse_outer)?,
-    ///             struct_token: input.parse()?,
-    ///             name: input.parse()?,
-    ///             semi_token: input.parse()?,
-    ///         })
-    ///     }
-    /// }
-    /// ```
-    ///
-    /// <p><br></p>
-    ///
-    /// # Parsing from Attribute to structured arguments
-    ///
-    /// The grammar of attributes in Rust is very flexible, which makes the
-    /// syntax tree not that useful on its own. In particular, arguments of the
-    /// `Meta::List` variety of attribute are held in an arbitrary `tokens:
-    /// TokenStream`. Macros are expected to check the `path` of the attribute,
-    /// decide whether they recognize it, and then parse the remaining tokens
-    /// according to whatever grammar they wish to require for that kind of
-    /// attribute. Use [`parse_args()`] to parse those tokens into the expected
-    /// data structure.
-    ///
-    /// [`parse_args()`]: Attribute::parse_args
-    ///
-    /// <p><br></p>
-    ///
-    /// # Doc comments
-    ///
-    /// The compiler transforms doc comments, such as `/// comment` and `/*!
-    /// comment */`, into attributes before macros are expanded. Each comment is
-    /// expanded into an attribute of the form `#[doc = r"comment"]`.
-    ///
-    /// As an example, the following `mod` items are expanded identically:
-    ///
-    /// ```
-    /// # use syn::{ItemMod, parse_quote};
-    /// let doc: ItemMod = parse_quote! {
-    ///     /// Single line doc comments
-    ///     /// We write so many!
-    ///     /**
-    ///      * Multi-line comments...
-    ///      * May span many lines
-    ///      */
-    ///     mod example {
-    ///         //! Of course, they can be inner too
-    ///         /*! And fit in a single line */
-    ///     }
-    /// };
-    /// let attr: ItemMod = parse_quote! {
-    ///     #[doc = r" Single line doc comments"]
-    ///     #[doc = r" We write so many!"]
-    ///     #[doc = r"
-    ///      * Multi-line comments...
-    ///      * May span many lines
-    ///      "]
-    ///     mod example {
-    ///         #![doc = r" Of course, they can be inner too"]
-    ///         #![doc = r" And fit in a single line "]
-    ///     }
-    /// };
-    /// assert_eq!(doc, attr);
-    /// ```
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct Attribute {
-        pub pound_token: Token![#],
-        pub style: AttrStyle,
-        pub bracket_token: token::Bracket,
-        pub meta: Meta,
-    }
-}
-
-impl Attribute {
-    /// Returns the path that identifies the interpretation of this attribute.
-    ///
-    /// For example this would return the `test` in `#[test]`, the `derive` in
-    /// `#[derive(Copy)]`, and the `path` in `#[path = "sys/windows.rs"]`.
-    pub fn path(&self) -> &Path {
-        self.meta.path()
-    }
-
-    /// Parse the arguments to the attribute as a syntax tree.
-    ///
-    /// This is similar to pulling out the `TokenStream` from `Meta::List` and
-    /// doing `syn::parse2::<T>(meta_list.tokens)`, except that using
-    /// `parse_args` the error message has a more useful span when `tokens` is
-    /// empty.
-    ///
-    /// The surrounding delimiters are *not* included in the input to the
-    /// parser.
-    ///
-    /// ```text
-    /// #[my_attr(value < 5)]
-    ///           ^^^^^^^^^ what gets parsed
-    /// ```
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use syn::{parse_quote, Attribute, Expr};
-    ///
-    /// let attr: Attribute = parse_quote! {
-    ///     #[precondition(value < 5)]
-    /// };
-    ///
-    /// if attr.path().is_ident("precondition") {
-    ///     let precondition: Expr = attr.parse_args()?;
-    ///     // ...
-    /// }
-    /// # anyhow::Ok(())
-    /// ```
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse_args<T: Parse>(&self) -> Result<T> {
-        self.parse_args_with(T::parse)
-    }
-
-    /// Parse the arguments to the attribute using the given parser.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use syn::{parse_quote, Attribute};
-    ///
-    /// let attr: Attribute = parse_quote! {
-    ///     #[inception { #[brrrrrrraaaaawwwwrwrrrmrmrmmrmrmmmmm] }]
-    /// };
-    ///
-    /// let bwom = attr.parse_args_with(Attribute::parse_outer)?;
-    ///
-    /// // Attribute does not have a Parse impl, so we couldn't directly do:
-    /// // let bwom: Attribute = attr.parse_args()?;
-    /// # anyhow::Ok(())
-    /// ```
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse_args_with<F: Parser>(&self, parser: F) -> Result<F::Output> {
-        match &self.meta {
-            Meta::Path(path) => Err(crate::error::new2(
-                path.segments.first().unwrap().ident.span(),
-                path.segments.last().unwrap().ident.span(),
-                format!(
-                    "expected attribute arguments in parentheses: {}[{}(...)]",
-                    parsing::DisplayAttrStyle(&self.style),
-                    parsing::DisplayPath(path),
-                ),
-            )),
-            Meta::NameValue(meta) => Err(Error::new(
-                meta.eq_token.span,
-                format_args!(
-                    "expected parentheses: {}[{}(...)]",
-                    parsing::DisplayAttrStyle(&self.style),
-                    parsing::DisplayPath(&meta.path),
-                ),
-            )),
-            Meta::List(meta) => meta.parse_args_with(parser),
-        }
-    }
-
-    /// Parse the arguments to the attribute, expecting it to follow the
-    /// conventional structure used by most of Rust's built-in attributes.
-    ///
-    /// The [*Meta Item Attribute Syntax*][syntax] section in the Rust reference
-    /// explains the convention in more detail. Not all attributes follow this
-    /// convention, so [`parse_args()`][Self::parse_args] is available if you
-    /// need to parse arbitrarily goofy attribute syntax.
-    ///
-    /// [syntax]: https://doc.rust-lang.org/reference/attributes.html#meta-item-attribute-syntax
-    ///
-    /// # Example
-    ///
-    /// We'll parse a struct, and then parse some of Rust's `#[repr]` attribute
-    /// syntax.
-    ///
-    /// ```
-    /// use syn::{parenthesized, parse_quote, token, ItemStruct, LitInt};
-    ///
-    /// let input: ItemStruct = parse_quote! {
-    ///     #[repr(C, align(4))]
-    ///     pub struct MyStruct(u16, u32);
-    /// };
-    ///
-    /// let mut repr_c = false;
-    /// let mut repr_transparent = false;
-    /// let mut repr_align = None::<usize>;
-    /// let mut repr_packed = None::<usize>;
-    /// for attr in &input.attrs {
-    ///     if attr.path().is_ident("repr") {
-    ///         attr.parse_nested_meta(|meta| {
-    ///             // #[repr(C)]
-    ///             if meta.path.is_ident("C") {
-    ///                 repr_c = true;
-    ///                 return Ok(());
-    ///             }
-    ///
-    ///             // #[repr(transparent)]
-    ///             if meta.path.is_ident("transparent") {
-    ///                 repr_transparent = true;
-    ///                 return Ok(());
-    ///             }
-    ///
-    ///             // #[repr(align(N))]
-    ///             if meta.path.is_ident("align") {
-    ///                 let content;
-    ///                 parenthesized!(content in meta.input);
-    ///                 let lit: LitInt = content.parse()?;
-    ///                 let n: usize = lit.base10_parse()?;
-    ///                 repr_align = Some(n);
-    ///                 return Ok(());
-    ///             }
-    ///
-    ///             // #[repr(packed)] or #[repr(packed(N))], omitted N means 1
-    ///             if meta.path.is_ident("packed") {
-    ///                 if meta.input.peek(token::Paren) {
-    ///                     let content;
-    ///                     parenthesized!(content in meta.input);
-    ///                     let lit: LitInt = content.parse()?;
-    ///                     let n: usize = lit.base10_parse()?;
-    ///                     repr_packed = Some(n);
-    ///                 } else {
-    ///                     repr_packed = Some(1);
-    ///                 }
-    ///                 return Ok(());
-    ///             }
-    ///
-    ///             Err(meta.error("unrecognized repr"))
-    ///         })?;
-    ///     }
-    /// }
-    /// # anyhow::Ok(())
-    /// ```
-    ///
-    /// # Alternatives
-    ///
-    /// In some cases, for attributes which have nested layers of structured
-    /// content, the following less flexible approach might be more convenient:
-    ///
-    /// ```
-    /// # use syn::{parse_quote, ItemStruct};
-    /// #
-    /// # let input: ItemStruct = parse_quote! {
-    /// #     #[repr(C, align(4))]
-    /// #     pub struct MyStruct(u16, u32);
-    /// # };
-    /// #
-    /// use syn::punctuated::Punctuated;
-    /// use syn::{parenthesized, token, Error, LitInt, Meta, Token};
-    ///
-    /// let mut repr_c = false;
-    /// let mut repr_transparent = false;
-    /// let mut repr_align = None::<usize>;
-    /// let mut repr_packed = None::<usize>;
-    /// for attr in &input.attrs {
-    ///     if attr.path().is_ident("repr") {
-    ///         let nested = attr.parse_args_with(Punctuated::<Meta, Token![,]>::parse_terminated)?;
-    ///         for meta in nested {
-    ///             match meta {
-    ///                 // #[repr(C)]
-    ///                 Meta::Path(path) if path.is_ident("C") => {
-    ///                     repr_c = true;
-    ///                 }
-    ///
-    ///                 // #[repr(align(N))]
-    ///                 Meta::List(meta) if meta.path.is_ident("align") => {
-    ///                     let lit: LitInt = meta.parse_args()?;
-    ///                     let n: usize = lit.base10_parse()?;
-    ///                     repr_align = Some(n);
-    ///                 }
-    ///
-    ///                 /* ... */
-    ///
-    ///                 _ => {
-    ///                     return Err(Error::new_spanned(meta, "unrecognized repr"));
-    ///                 }
-    ///             }
-    ///         }
-    ///     }
-    /// }
-    /// # Ok(())
-    /// ```
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse_nested_meta(
-        &self,
-        logic: impl FnMut(ParseNestedMeta) -> Result<()>,
-    ) -> Result<()> {
-        self.parse_args_with(meta::parser(logic))
-    }
-
-    /// Parses zero or more outer attributes from the stream.
-    ///
-    /// # Example
-    ///
-    /// See
-    /// [*Parsing from tokens to Attribute*](#parsing-from-tokens-to-attribute).
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse_outer(input: ParseStream) -> Result<Vec<Self>> {
-        let mut attrs = Vec::new();
-        while input.peek(Token![#]) {
-            attrs.push(input.call(parsing::single_parse_outer)?);
-        }
-        Ok(attrs)
-    }
-
-    /// Parses zero or more inner attributes from the stream.
-    ///
-    /// # Example
-    ///
-    /// See
-    /// [*Parsing from tokens to Attribute*](#parsing-from-tokens-to-attribute).
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse_inner(input: ParseStream) -> Result<Vec<Self>> {
-        let mut attrs = Vec::new();
-        parsing::parse_inner(input, &mut attrs)?;
-        Ok(attrs)
-    }
-}
-
-ast_enum! {
-    /// Distinguishes between attributes that decorate an item and attributes
-    /// that are contained within an item.
-    ///
-    /// # Outer attributes
-    ///
-    /// - `#[repr(transparent)]`
-    /// - `/// # Example`
-    /// - `/** Please file an issue */`
-    ///
-    /// # Inner attributes
-    ///
-    /// - `#![feature(proc_macro)]`
-    /// - `//! # Example`
-    /// - `/*! Please file an issue */`
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub enum AttrStyle {
-        Outer,
-        Inner(Token![!]),
-    }
-}
-
-ast_enum_of_structs! {
-    /// Content of a compile-time structured attribute.
-    ///
-    /// ## Path
-    ///
-    /// A meta path is like the `test` in `#[test]`.
-    ///
-    /// ## List
-    ///
-    /// A meta list is like the `derive(Copy)` in `#[derive(Copy)]`.
-    ///
-    /// ## NameValue
-    ///
-    /// A name-value meta is like the `path = "..."` in `#[path =
-    /// "sys/windows.rs"]`.
-    ///
-    /// # Syntax tree enum
-    ///
-    /// This type is a [syntax tree enum].
-    ///
-    /// [syntax tree enum]: Expr#syntax-tree-enums
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub enum Meta {
-        Path(Path),
-
-        /// A structured list within an attribute, like `derive(Copy, Clone)`.
-        List(MetaList),
-
-        /// A name-value pair within an attribute, like `feature = "nightly"`.
-        NameValue(MetaNameValue),
-    }
-}
-
-ast_struct! {
-    /// A structured list within an attribute, like `derive(Copy, Clone)`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct MetaList {
-        pub path: Path,
-        pub delimiter: MacroDelimiter,
-        pub tokens: TokenStream,
-    }
-}
-
-ast_struct! {
-    /// A name-value pair within an attribute, like `feature = "nightly"`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct MetaNameValue {
-        pub path: Path,
-        pub eq_token: Token![=],
-        pub value: Expr,
-    }
-}
-
-impl Meta {
-    /// Returns the path that begins this structured meta item.
-    ///
-    /// For example this would return the `test` in `#[test]`, the `derive` in
-    /// `#[derive(Copy)]`, and the `path` in `#[path = "sys/windows.rs"]`.
-    pub fn path(&self) -> &Path {
-        match self {
-            Meta::Path(path) => path,
-            Meta::List(meta) => &meta.path,
-            Meta::NameValue(meta) => &meta.path,
-        }
-    }
-
-    /// Error if this is a `Meta::List` or `Meta::NameValue`.
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn require_path_only(&self) -> Result<&Path> {
-        let error_span = match self {
-            Meta::Path(path) => return Ok(path),
-            Meta::List(meta) => meta.delimiter.span().open(),
-            Meta::NameValue(meta) => meta.eq_token.span,
-        };
-        Err(Error::new(error_span, "unexpected token in attribute"))
-    }
-
-    /// Error if this is a `Meta::Path` or `Meta::NameValue`.
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn require_list(&self) -> Result<&MetaList> {
-        match self {
-            Meta::List(meta) => Ok(meta),
-            Meta::Path(path) => Err(crate::error::new2(
-                path.segments.first().unwrap().ident.span(),
-                path.segments.last().unwrap().ident.span(),
-                format!(
-                    "expected attribute arguments in parentheses: `{}(...)`",
-                    parsing::DisplayPath(path),
-                ),
-            )),
-            Meta::NameValue(meta) => Err(Error::new(meta.eq_token.span, "expected `(`")),
-        }
-    }
-
-    /// Error if this is a `Meta::Path` or `Meta::List`.
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn require_name_value(&self) -> Result<&MetaNameValue> {
-        match self {
-            Meta::NameValue(meta) => Ok(meta),
-            Meta::Path(path) => Err(crate::error::new2(
-                path.segments.first().unwrap().ident.span(),
-                path.segments.last().unwrap().ident.span(),
-                format!(
-                    "expected a value for this attribute: `{} = ...`",
-                    parsing::DisplayPath(path),
-                ),
-            )),
-            Meta::List(meta) => Err(Error::new(meta.delimiter.span().open(), "expected `=`")),
-        }
-    }
-}
-
-impl MetaList {
-    /// See [`Attribute::parse_args`].
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse_args<T: Parse>(&self) -> Result<T> {
-        self.parse_args_with(T::parse)
-    }
-
-    /// See [`Attribute::parse_args_with`].
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse_args_with<F: Parser>(&self, parser: F) -> Result<F::Output> {
-        let scope = self.delimiter.span().close();
-        crate::parse::parse_scoped(parser, scope, self.tokens.clone())
-    }
-
-    /// See [`Attribute::parse_nested_meta`].
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse_nested_meta(
-        &self,
-        logic: impl FnMut(ParseNestedMeta) -> Result<()>,
-    ) -> Result<()> {
-        self.parse_args_with(meta::parser(logic))
-    }
-}
-
-pub(crate) trait FilterAttrs<'a> {
-    type Ret: Iterator<Item = &'a Attribute>;
-
-    fn outer(self) -> Self::Ret;
-    fn inner(self) -> Self::Ret;
-}
-
-impl<'a> FilterAttrs<'a> for &'a [Attribute] {
-    type Ret = iter::Filter<slice::Iter<'a, Attribute>, fn(&&Attribute) -> bool>;
-
-    fn outer(self) -> Self::Ret {
-        fn is_outer(attr: &&Attribute) -> bool {
-            match attr.style {
-                AttrStyle::Outer => true,
-                AttrStyle::Inner(_) => false,
-            }
-        }
-        self.iter().filter(is_outer)
-    }
-
-    fn inner(self) -> Self::Ret {
-        fn is_inner(attr: &&Attribute) -> bool {
-            match attr.style {
-                AttrStyle::Inner(_) => true,
-                AttrStyle::Outer => false,
-            }
-        }
-        self.iter().filter(is_inner)
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::*;
-    use crate::parse::discouraged::Speculative as _;
-    use crate::parse::{Parse, ParseStream, Result};
-    use std::fmt::{self, Display};
-
-    pub(crate) fn parse_inner(input: ParseStream, attrs: &mut Vec<Attribute>) -> Result<()> {
-        while input.peek(Token![#]) && input.peek2(Token![!]) {
-            attrs.push(input.call(parsing::single_parse_inner)?);
-        }
-        Ok(())
-    }
-
-    pub(crate) fn single_parse_inner(input: ParseStream) -> Result<Attribute> {
-        let content;
-        Ok(Attribute {
-            pound_token: input.parse()?,
-            style: AttrStyle::Inner(input.parse()?),
-            bracket_token: bracketed!(content in input),
-            meta: content.parse()?,
-        })
-    }
-
-    pub(crate) fn single_parse_outer(input: ParseStream) -> Result<Attribute> {
-        let content;
-        Ok(Attribute {
-            pound_token: input.parse()?,
-            style: AttrStyle::Outer,
-            bracket_token: bracketed!(content in input),
-            meta: content.parse()?,
-        })
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Meta {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let path = input.call(Path::parse_mod_style)?;
-            parse_meta_after_path(path, input)
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for MetaList {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let path = input.call(Path::parse_mod_style)?;
-            parse_meta_list_after_path(path, input)
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for MetaNameValue {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let path = input.call(Path::parse_mod_style)?;
-            parse_meta_name_value_after_path(path, input)
-        }
-    }
-
-    pub(crate) fn parse_meta_after_path(path: Path, input: ParseStream) -> Result<Meta> {
-        if input.peek(token::Paren) || input.peek(token::Bracket) || input.peek(token::Brace) {
-            parse_meta_list_after_path(path, input).map(Meta::List)
-        } else if input.peek(Token![=]) {
-            parse_meta_name_value_after_path(path, input).map(Meta::NameValue)
-        } else {
-            Ok(Meta::Path(path))
-        }
-    }
-
-    fn parse_meta_list_after_path(path: Path, input: ParseStream) -> Result<MetaList> {
-        let (delimiter, tokens) = mac::parse_delimiter(input)?;
-        Ok(MetaList {
-            path,
-            delimiter,
-            tokens,
-        })
-    }
-
-    fn parse_meta_name_value_after_path(path: Path, input: ParseStream) -> Result<MetaNameValue> {
-        let eq_token: Token![=] = input.parse()?;
-        let ahead = input.fork();
-        let lit: Option<Lit> = ahead.parse()?;
-        let value = if let (Some(lit), true) = (lit, ahead.is_empty()) {
-            input.advance_to(&ahead);
-            Expr::Lit(ExprLit {
-                attrs: Vec::new(),
-                lit,
-            })
-        } else if input.peek(Token![#]) && input.peek2(token::Bracket) {
-            return Err(input.error("unexpected attribute inside of attribute"));
-        } else {
-            input.parse()?
-        };
-        Ok(MetaNameValue {
-            path,
-            eq_token,
-            value,
-        })
-    }
-
-    pub(super) struct DisplayAttrStyle<'a>(pub &'a AttrStyle);
-
-    impl<'a> Display for DisplayAttrStyle<'a> {
-        fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-            formatter.write_str(match self.0 {
-                AttrStyle::Outer => "#",
-                AttrStyle::Inner(_) => "#!",
-            })
-        }
-    }
-
-    pub(super) struct DisplayPath<'a>(pub &'a Path);
-
-    impl<'a> Display for DisplayPath<'a> {
-        fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-            for (i, segment) in self.0.segments.iter().enumerate() {
-                if i > 0 || self.0.leading_colon.is_some() {
-                    formatter.write_str("::")?;
-                }
-                write!(formatter, "{}", segment.ident)?;
-            }
-            Ok(())
-        }
-    }
-}
-
-#[cfg(feature = "printing")]
-mod printing {
-    use super::*;
-    use proc_macro2::TokenStream;
-    use quote::ToTokens;
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Attribute {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.pound_token.to_tokens(tokens);
-            if let AttrStyle::Inner(b) = &self.style {
-                b.to_tokens(tokens);
-            }
-            self.bracket_token.surround(tokens, |tokens| {
-                self.meta.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for MetaList {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.path.to_tokens(tokens);
-            self.delimiter.surround(tokens, self.tokens.clone());
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for MetaNameValue {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.path.to_tokens(tokens);
-            self.eq_token.to_tokens(tokens);
-            self.value.to_tokens(tokens);
-        }
-    }
-}
diff --git a/vendor/syn/src/bigint.rs b/vendor/syn/src/bigint.rs
deleted file mode 100644
index 66aaa93..0000000
--- a/vendor/syn/src/bigint.rs
+++ /dev/null
@@ -1,66 +0,0 @@
-use std::ops::{AddAssign, MulAssign};
-
-// For implementing base10_digits() accessor on LitInt.
-pub(crate) struct BigInt {
-    digits: Vec<u8>,
-}
-
-impl BigInt {
-    pub(crate) fn new() -> Self {
-        BigInt { digits: Vec::new() }
-    }
-
-    pub(crate) fn to_string(&self) -> String {
-        let mut repr = String::with_capacity(self.digits.len());
-
-        let mut has_nonzero = false;
-        for digit in self.digits.iter().rev() {
-            has_nonzero |= *digit != 0;
-            if has_nonzero {
-                repr.push((*digit + b'0') as char);
-            }
-        }
-
-        if repr.is_empty() {
-            repr.push('0');
-        }
-
-        repr
-    }
-
-    fn reserve_two_digits(&mut self) {
-        let len = self.digits.len();
-        let desired =
-            len + !self.digits.ends_with(&[0, 0]) as usize + !self.digits.ends_with(&[0]) as usize;
-        self.digits.resize(desired, 0);
-    }
-}
-
-impl AddAssign<u8> for BigInt {
-    // Assumes increment <16.
-    fn add_assign(&mut self, mut increment: u8) {
-        self.reserve_two_digits();
-
-        let mut i = 0;
-        while increment > 0 {
-            let sum = self.digits[i] + increment;
-            self.digits[i] = sum % 10;
-            increment = sum / 10;
-            i += 1;
-        }
-    }
-}
-
-impl MulAssign<u8> for BigInt {
-    // Assumes base <=16.
-    fn mul_assign(&mut self, base: u8) {
-        self.reserve_two_digits();
-
-        let mut carry = 0;
-        for digit in &mut self.digits {
-            let prod = *digit * base + carry;
-            *digit = prod % 10;
-            carry = prod / 10;
-        }
-    }
-}
diff --git a/vendor/syn/src/buffer.rs b/vendor/syn/src/buffer.rs
deleted file mode 100644
index 86dec46..0000000
--- a/vendor/syn/src/buffer.rs
+++ /dev/null
@@ -1,432 +0,0 @@
-//! A stably addressed token buffer supporting efficient traversal based on a
-//! cheaply copyable cursor.
-
-// This module is heavily commented as it contains most of the unsafe code in
-// Syn, and caution should be used when editing it. The public-facing interface
-// is 100% safe but the implementation is fragile internally.
-
-use crate::Lifetime;
-use proc_macro2::extra::DelimSpan;
-use proc_macro2::{Delimiter, Group, Ident, Literal, Punct, Spacing, Span, TokenStream, TokenTree};
-use std::cmp::Ordering;
-use std::marker::PhantomData;
-
-/// Internal type which is used instead of `TokenTree` to represent a token tree
-/// within a `TokenBuffer`.
-enum Entry {
-    // Mimicking types from proc-macro.
-    // Group entries contain the offset to the matching End entry.
-    Group(Group, usize),
-    Ident(Ident),
-    Punct(Punct),
-    Literal(Literal),
-    // End entries contain the offset (negative) to the start of the buffer.
-    End(isize),
-}
-
-/// A buffer that can be efficiently traversed multiple times, unlike
-/// `TokenStream` which requires a deep copy in order to traverse more than
-/// once.
-pub struct TokenBuffer {
-    // NOTE: Do not implement clone on this - while the current design could be
-    // cloned, other designs which could be desirable may not be cloneable.
-    entries: Box<[Entry]>,
-}
-
-impl TokenBuffer {
-    fn recursive_new(entries: &mut Vec<Entry>, stream: TokenStream) {
-        for tt in stream {
-            match tt {
-                TokenTree::Ident(ident) => entries.push(Entry::Ident(ident)),
-                TokenTree::Punct(punct) => entries.push(Entry::Punct(punct)),
-                TokenTree::Literal(literal) => entries.push(Entry::Literal(literal)),
-                TokenTree::Group(group) => {
-                    let group_start_index = entries.len();
-                    entries.push(Entry::End(0)); // we replace this below
-                    Self::recursive_new(entries, group.stream());
-                    let group_end_index = entries.len();
-                    entries.push(Entry::End(-(group_end_index as isize)));
-                    let group_end_offset = group_end_index - group_start_index;
-                    entries[group_start_index] = Entry::Group(group, group_end_offset);
-                }
-            }
-        }
-    }
-
-    /// Creates a `TokenBuffer` containing all the tokens from the input
-    /// `proc_macro::TokenStream`.
-    #[cfg(feature = "proc-macro")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "proc-macro")))]
-    pub fn new(stream: proc_macro::TokenStream) -> Self {
-        Self::new2(stream.into())
-    }
-
-    /// Creates a `TokenBuffer` containing all the tokens from the input
-    /// `proc_macro2::TokenStream`.
-    pub fn new2(stream: TokenStream) -> Self {
-        let mut entries = Vec::new();
-        Self::recursive_new(&mut entries, stream);
-        entries.push(Entry::End(-(entries.len() as isize)));
-        Self {
-            entries: entries.into_boxed_slice(),
-        }
-    }
-
-    /// Creates a cursor referencing the first token in the buffer and able to
-    /// traverse until the end of the buffer.
-    pub fn begin(&self) -> Cursor {
-        let ptr = self.entries.as_ptr();
-        unsafe { Cursor::create(ptr, ptr.add(self.entries.len() - 1)) }
-    }
-}
-
-/// A cheaply copyable cursor into a `TokenBuffer`.
-///
-/// This cursor holds a shared reference into the immutable data which is used
-/// internally to represent a `TokenStream`, and can be efficiently manipulated
-/// and copied around.
-///
-/// An empty `Cursor` can be created directly, or one may create a `TokenBuffer`
-/// object and get a cursor to its first token with `begin()`.
-pub struct Cursor<'a> {
-    // The current entry which the `Cursor` is pointing at.
-    ptr: *const Entry,
-    // This is the only `Entry::End` object which this cursor is allowed to
-    // point at. All other `End` objects are skipped over in `Cursor::create`.
-    scope: *const Entry,
-    // Cursor is covariant in 'a. This field ensures that our pointers are still
-    // valid.
-    marker: PhantomData<&'a Entry>,
-}
-
-impl<'a> Cursor<'a> {
-    /// Creates a cursor referencing a static empty TokenStream.
-    pub fn empty() -> Self {
-        // It's safe in this situation for us to put an `Entry` object in global
-        // storage, despite it not actually being safe to send across threads
-        // (`Ident` is a reference into a thread-local table). This is because
-        // this entry never includes a `Ident` object.
-        //
-        // This wrapper struct allows us to break the rules and put a `Sync`
-        // object in global storage.
-        struct UnsafeSyncEntry(Entry);
-        unsafe impl Sync for UnsafeSyncEntry {}
-        static EMPTY_ENTRY: UnsafeSyncEntry = UnsafeSyncEntry(Entry::End(0));
-
-        Cursor {
-            ptr: &EMPTY_ENTRY.0,
-            scope: &EMPTY_ENTRY.0,
-            marker: PhantomData,
-        }
-    }
-
-    /// This create method intelligently exits non-explicitly-entered
-    /// `None`-delimited scopes when the cursor reaches the end of them,
-    /// allowing for them to be treated transparently.
-    unsafe fn create(mut ptr: *const Entry, scope: *const Entry) -> Self {
-        // NOTE: If we're looking at a `End`, we want to advance the cursor
-        // past it, unless `ptr == scope`, which means that we're at the edge of
-        // our cursor's scope. We should only have `ptr != scope` at the exit
-        // from None-delimited groups entered with `ignore_none`.
-        while let Entry::End(_) = unsafe { &*ptr } {
-            if ptr == scope {
-                break;
-            }
-            ptr = unsafe { ptr.add(1) };
-        }
-
-        Cursor {
-            ptr,
-            scope,
-            marker: PhantomData,
-        }
-    }
-
-    /// Get the current entry.
-    fn entry(self) -> &'a Entry {
-        unsafe { &*self.ptr }
-    }
-
-    /// Bump the cursor to point at the next token after the current one. This
-    /// is undefined behavior if the cursor is currently looking at an
-    /// `Entry::End`.
-    ///
-    /// If the cursor is looking at an `Entry::Group`, the bumped cursor will
-    /// point at the first token in the group (with the same scope end).
-    unsafe fn bump_ignore_group(self) -> Cursor<'a> {
-        unsafe { Cursor::create(self.ptr.offset(1), self.scope) }
-    }
-
-    /// While the cursor is looking at a `None`-delimited group, move it to look
-    /// at the first token inside instead. If the group is empty, this will move
-    /// the cursor past the `None`-delimited group.
-    ///
-    /// WARNING: This mutates its argument.
-    fn ignore_none(&mut self) {
-        while let Entry::Group(group, _) = self.entry() {
-            if group.delimiter() == Delimiter::None {
-                unsafe { *self = self.bump_ignore_group() };
-            } else {
-                break;
-            }
-        }
-    }
-
-    /// Checks whether the cursor is currently pointing at the end of its valid
-    /// scope.
-    pub fn eof(self) -> bool {
-        // We're at eof if we're at the end of our scope.
-        self.ptr == self.scope
-    }
-
-    /// If the cursor is pointing at a `Group` with the given delimiter, returns
-    /// a cursor into that group and one pointing to the next `TokenTree`.
-    pub fn group(mut self, delim: Delimiter) -> Option<(Cursor<'a>, DelimSpan, Cursor<'a>)> {
-        // If we're not trying to enter a none-delimited group, we want to
-        // ignore them. We have to make sure to _not_ ignore them when we want
-        // to enter them, of course. For obvious reasons.
-        if delim != Delimiter::None {
-            self.ignore_none();
-        }
-
-        if let Entry::Group(group, end_offset) = self.entry() {
-            if group.delimiter() == delim {
-                let span = group.delim_span();
-                let end_of_group = unsafe { self.ptr.add(*end_offset) };
-                let inside_of_group = unsafe { Cursor::create(self.ptr.add(1), end_of_group) };
-                let after_group = unsafe { Cursor::create(end_of_group, self.scope) };
-                return Some((inside_of_group, span, after_group));
-            }
-        }
-
-        None
-    }
-
-    pub(crate) fn any_group(self) -> Option<(Cursor<'a>, Delimiter, DelimSpan, Cursor<'a>)> {
-        if let Entry::Group(group, end_offset) = self.entry() {
-            let delimiter = group.delimiter();
-            let span = group.delim_span();
-            let end_of_group = unsafe { self.ptr.add(*end_offset) };
-            let inside_of_group = unsafe { Cursor::create(self.ptr.add(1), end_of_group) };
-            let after_group = unsafe { Cursor::create(end_of_group, self.scope) };
-            return Some((inside_of_group, delimiter, span, after_group));
-        }
-
-        None
-    }
-
-    pub(crate) fn any_group_token(self) -> Option<(Group, Cursor<'a>)> {
-        if let Entry::Group(group, end_offset) = self.entry() {
-            let end_of_group = unsafe { self.ptr.add(*end_offset) };
-            let after_group = unsafe { Cursor::create(end_of_group, self.scope) };
-            return Some((group.clone(), after_group));
-        }
-
-        None
-    }
-
-    /// If the cursor is pointing at a `Ident`, returns it along with a cursor
-    /// pointing at the next `TokenTree`.
-    pub fn ident(mut self) -> Option<(Ident, Cursor<'a>)> {
-        self.ignore_none();
-        match self.entry() {
-            Entry::Ident(ident) => Some((ident.clone(), unsafe { self.bump_ignore_group() })),
-            _ => None,
-        }
-    }
-
-    /// If the cursor is pointing at a `Punct`, returns it along with a cursor
-    /// pointing at the next `TokenTree`.
-    pub fn punct(mut self) -> Option<(Punct, Cursor<'a>)> {
-        self.ignore_none();
-        match self.entry() {
-            Entry::Punct(punct) if punct.as_char() != '\'' => {
-                Some((punct.clone(), unsafe { self.bump_ignore_group() }))
-            }
-            _ => None,
-        }
-    }
-
-    /// If the cursor is pointing at a `Literal`, return it along with a cursor
-    /// pointing at the next `TokenTree`.
-    pub fn literal(mut self) -> Option<(Literal, Cursor<'a>)> {
-        self.ignore_none();
-        match self.entry() {
-            Entry::Literal(literal) => Some((literal.clone(), unsafe { self.bump_ignore_group() })),
-            _ => None,
-        }
-    }
-
-    /// If the cursor is pointing at a `Lifetime`, returns it along with a
-    /// cursor pointing at the next `TokenTree`.
-    pub fn lifetime(mut self) -> Option<(Lifetime, Cursor<'a>)> {
-        self.ignore_none();
-        match self.entry() {
-            Entry::Punct(punct) if punct.as_char() == '\'' && punct.spacing() == Spacing::Joint => {
-                let next = unsafe { self.bump_ignore_group() };
-                let (ident, rest) = next.ident()?;
-                let lifetime = Lifetime {
-                    apostrophe: punct.span(),
-                    ident,
-                };
-                Some((lifetime, rest))
-            }
-            _ => None,
-        }
-    }
-
-    /// Copies all remaining tokens visible from this cursor into a
-    /// `TokenStream`.
-    pub fn token_stream(self) -> TokenStream {
-        let mut tts = Vec::new();
-        let mut cursor = self;
-        while let Some((tt, rest)) = cursor.token_tree() {
-            tts.push(tt);
-            cursor = rest;
-        }
-        tts.into_iter().collect()
-    }
-
-    /// If the cursor is pointing at a `TokenTree`, returns it along with a
-    /// cursor pointing at the next `TokenTree`.
-    ///
-    /// Returns `None` if the cursor has reached the end of its stream.
-    ///
-    /// This method does not treat `None`-delimited groups as transparent, and
-    /// will return a `Group(None, ..)` if the cursor is looking at one.
-    pub fn token_tree(self) -> Option<(TokenTree, Cursor<'a>)> {
-        let (tree, len) = match self.entry() {
-            Entry::Group(group, end_offset) => (group.clone().into(), *end_offset),
-            Entry::Literal(literal) => (literal.clone().into(), 1),
-            Entry::Ident(ident) => (ident.clone().into(), 1),
-            Entry::Punct(punct) => (punct.clone().into(), 1),
-            Entry::End(_) => return None,
-        };
-
-        let rest = unsafe { Cursor::create(self.ptr.add(len), self.scope) };
-        Some((tree, rest))
-    }
-
-    /// Returns the `Span` of the current token, or `Span::call_site()` if this
-    /// cursor points to eof.
-    pub fn span(self) -> Span {
-        match self.entry() {
-            Entry::Group(group, _) => group.span(),
-            Entry::Literal(literal) => literal.span(),
-            Entry::Ident(ident) => ident.span(),
-            Entry::Punct(punct) => punct.span(),
-            Entry::End(_) => Span::call_site(),
-        }
-    }
-
-    /// Returns the `Span` of the token immediately prior to the position of
-    /// this cursor, or of the current token if there is no previous one.
-    #[cfg(any(feature = "full", feature = "derive"))]
-    pub(crate) fn prev_span(mut self) -> Span {
-        if start_of_buffer(self) < self.ptr {
-            self.ptr = unsafe { self.ptr.offset(-1) };
-            if let Entry::End(_) = self.entry() {
-                // Locate the matching Group begin token.
-                let mut depth = 1;
-                loop {
-                    self.ptr = unsafe { self.ptr.offset(-1) };
-                    match self.entry() {
-                        Entry::Group(group, _) => {
-                            depth -= 1;
-                            if depth == 0 {
-                                return group.span();
-                            }
-                        }
-                        Entry::End(_) => depth += 1,
-                        Entry::Literal(_) | Entry::Ident(_) | Entry::Punct(_) => {}
-                    }
-                }
-            }
-        }
-        self.span()
-    }
-
-    /// Skip over the next token without cloning it. Returns `None` if this
-    /// cursor points to eof.
-    ///
-    /// This method treats `'lifetimes` as a single token.
-    pub(crate) fn skip(self) -> Option<Cursor<'a>> {
-        let len = match self.entry() {
-            Entry::End(_) => return None,
-
-            // Treat lifetimes as a single tt for the purposes of 'skip'.
-            Entry::Punct(punct) if punct.as_char() == '\'' && punct.spacing() == Spacing::Joint => {
-                match unsafe { &*self.ptr.add(1) } {
-                    Entry::Ident(_) => 2,
-                    _ => 1,
-                }
-            }
-
-            Entry::Group(_, end_offset) => *end_offset,
-            _ => 1,
-        };
-
-        Some(unsafe { Cursor::create(self.ptr.add(len), self.scope) })
-    }
-}
-
-impl<'a> Copy for Cursor<'a> {}
-
-impl<'a> Clone for Cursor<'a> {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
-
-impl<'a> Eq for Cursor<'a> {}
-
-impl<'a> PartialEq for Cursor<'a> {
-    fn eq(&self, other: &Self) -> bool {
-        self.ptr == other.ptr
-    }
-}
-
-impl<'a> PartialOrd for Cursor<'a> {
-    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
-        if same_buffer(*self, *other) {
-            Some(cmp_assuming_same_buffer(*self, *other))
-        } else {
-            None
-        }
-    }
-}
-
-pub(crate) fn same_scope(a: Cursor, b: Cursor) -> bool {
-    a.scope == b.scope
-}
-
-pub(crate) fn same_buffer(a: Cursor, b: Cursor) -> bool {
-    start_of_buffer(a) == start_of_buffer(b)
-}
-
-fn start_of_buffer(cursor: Cursor) -> *const Entry {
-    unsafe {
-        match &*cursor.scope {
-            Entry::End(offset) => cursor.scope.offset(*offset),
-            _ => unreachable!(),
-        }
-    }
-}
-
-pub(crate) fn cmp_assuming_same_buffer(a: Cursor, b: Cursor) -> Ordering {
-    a.ptr.cmp(&b.ptr)
-}
-
-pub(crate) fn open_span_of_group(cursor: Cursor) -> Span {
-    match cursor.entry() {
-        Entry::Group(group, _) => group.span_open(),
-        _ => cursor.span(),
-    }
-}
-
-pub(crate) fn close_span_of_group(cursor: Cursor) -> Span {
-    match cursor.entry() {
-        Entry::Group(group, _) => group.span_close(),
-        _ => cursor.span(),
-    }
-}
diff --git a/vendor/syn/src/custom_keyword.rs b/vendor/syn/src/custom_keyword.rs
deleted file mode 100644
index 6ce23db..0000000
--- a/vendor/syn/src/custom_keyword.rs
+++ /dev/null
@@ -1,259 +0,0 @@
-/// Define a type that supports parsing and printing a given identifier as if it
-/// were a keyword.
-///
-/// # Usage
-///
-/// As a convention, it is recommended that this macro be invoked within a
-/// module called `kw` or `keyword` and that the resulting parser be invoked
-/// with a `kw::` or `keyword::` prefix.
-///
-/// ```
-/// mod kw {
-///     syn::custom_keyword!(whatever);
-/// }
-/// ```
-///
-/// The generated syntax tree node supports the following operations just like
-/// any built-in keyword token.
-///
-/// - [Peeking] — `input.peek(kw::whatever)`
-///
-/// - [Parsing] — `input.parse::<kw::whatever>()?`
-///
-/// - [Printing] — `quote!( ... #whatever_token ... )`
-///
-/// - Construction from a [`Span`] — `let whatever_token = kw::whatever(sp)`
-///
-/// - Field access to its span — `let sp = whatever_token.span`
-///
-/// [Peeking]: crate::parse::ParseBuffer::peek
-/// [Parsing]: crate::parse::ParseBuffer::parse
-/// [Printing]: quote::ToTokens
-/// [`Span`]: proc_macro2::Span
-///
-/// # Example
-///
-/// This example parses input that looks like `bool = true` or `str = "value"`.
-/// The key must be either the identifier `bool` or the identifier `str`. If
-/// `bool`, the value may be either `true` or `false`. If `str`, the value may
-/// be any string literal.
-///
-/// The symbols `bool` and `str` are not reserved keywords in Rust so these are
-/// not considered keywords in the `syn::token` module. Like any other
-/// identifier that is not a keyword, these can be declared as custom keywords
-/// by crates that need to use them as such.
-///
-/// ```
-/// use syn::{LitBool, LitStr, Result, Token};
-/// use syn::parse::{Parse, ParseStream};
-///
-/// mod kw {
-///     syn::custom_keyword!(bool);
-///     syn::custom_keyword!(str);
-/// }
-///
-/// enum Argument {
-///     Bool {
-///         bool_token: kw::bool,
-///         eq_token: Token![=],
-///         value: LitBool,
-///     },
-///     Str {
-///         str_token: kw::str,
-///         eq_token: Token![=],
-///         value: LitStr,
-///     },
-/// }
-///
-/// impl Parse for Argument {
-///     fn parse(input: ParseStream) -> Result<Self> {
-///         let lookahead = input.lookahead1();
-///         if lookahead.peek(kw::bool) {
-///             Ok(Argument::Bool {
-///                 bool_token: input.parse::<kw::bool>()?,
-///                 eq_token: input.parse()?,
-///                 value: input.parse()?,
-///             })
-///         } else if lookahead.peek(kw::str) {
-///             Ok(Argument::Str {
-///                 str_token: input.parse::<kw::str>()?,
-///                 eq_token: input.parse()?,
-///                 value: input.parse()?,
-///             })
-///         } else {
-///             Err(lookahead.error())
-///         }
-///     }
-/// }
-/// ```
-#[macro_export]
-macro_rules! custom_keyword {
-    ($ident:ident) => {
-        #[allow(non_camel_case_types)]
-        pub struct $ident {
-            pub span: $crate::__private::Span,
-        }
-
-        #[doc(hidden)]
-        #[allow(dead_code, non_snake_case)]
-        pub fn $ident<__S: $crate::__private::IntoSpans<$crate::__private::Span>>(
-            span: __S,
-        ) -> $ident {
-            $ident {
-                span: $crate::__private::IntoSpans::into_spans(span),
-            }
-        }
-
-        const _: () = {
-            impl $crate::__private::Default for $ident {
-                fn default() -> Self {
-                    $ident {
-                        span: $crate::__private::Span::call_site(),
-                    }
-                }
-            }
-
-            $crate::impl_parse_for_custom_keyword!($ident);
-            $crate::impl_to_tokens_for_custom_keyword!($ident);
-            $crate::impl_clone_for_custom_keyword!($ident);
-            $crate::impl_extra_traits_for_custom_keyword!($ident);
-        };
-    };
-}
-
-// Not public API.
-#[cfg(feature = "parsing")]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_parse_for_custom_keyword {
-    ($ident:ident) => {
-        // For peek.
-        impl $crate::__private::CustomToken for $ident {
-            fn peek(cursor: $crate::buffer::Cursor) -> $crate::__private::bool {
-                if let $crate::__private::Some((ident, _rest)) = cursor.ident() {
-                    ident == $crate::__private::stringify!($ident)
-                } else {
-                    false
-                }
-            }
-
-            fn display() -> &'static $crate::__private::str {
-                $crate::__private::concat!("`", $crate::__private::stringify!($ident), "`")
-            }
-        }
-
-        impl $crate::parse::Parse for $ident {
-            fn parse(input: $crate::parse::ParseStream) -> $crate::parse::Result<$ident> {
-                input.step(|cursor| {
-                    if let $crate::__private::Some((ident, rest)) = cursor.ident() {
-                        if ident == $crate::__private::stringify!($ident) {
-                            return $crate::__private::Ok(($ident { span: ident.span() }, rest));
-                        }
-                    }
-                    $crate::__private::Err(cursor.error($crate::__private::concat!(
-                        "expected `",
-                        $crate::__private::stringify!($ident),
-                        "`",
-                    )))
-                })
-            }
-        }
-    };
-}
-
-// Not public API.
-#[cfg(not(feature = "parsing"))]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_parse_for_custom_keyword {
-    ($ident:ident) => {};
-}
-
-// Not public API.
-#[cfg(feature = "printing")]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_to_tokens_for_custom_keyword {
-    ($ident:ident) => {
-        impl $crate::__private::ToTokens for $ident {
-            fn to_tokens(&self, tokens: &mut $crate::__private::TokenStream2) {
-                let ident = $crate::Ident::new($crate::__private::stringify!($ident), self.span);
-                $crate::__private::TokenStreamExt::append(tokens, ident);
-            }
-        }
-    };
-}
-
-// Not public API.
-#[cfg(not(feature = "printing"))]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_to_tokens_for_custom_keyword {
-    ($ident:ident) => {};
-}
-
-// Not public API.
-#[cfg(feature = "clone-impls")]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_clone_for_custom_keyword {
-    ($ident:ident) => {
-        impl $crate::__private::Copy for $ident {}
-
-        #[allow(clippy::expl_impl_clone_on_copy)]
-        impl $crate::__private::Clone for $ident {
-            fn clone(&self) -> Self {
-                *self
-            }
-        }
-    };
-}
-
-// Not public API.
-#[cfg(not(feature = "clone-impls"))]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_clone_for_custom_keyword {
-    ($ident:ident) => {};
-}
-
-// Not public API.
-#[cfg(feature = "extra-traits")]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_extra_traits_for_custom_keyword {
-    ($ident:ident) => {
-        impl $crate::__private::Debug for $ident {
-            fn fmt(&self, f: &mut $crate::__private::Formatter) -> $crate::__private::FmtResult {
-                $crate::__private::Formatter::write_str(
-                    f,
-                    $crate::__private::concat!(
-                        "Keyword [",
-                        $crate::__private::stringify!($ident),
-                        "]",
-                    ),
-                )
-            }
-        }
-
-        impl $crate::__private::Eq for $ident {}
-
-        impl $crate::__private::PartialEq for $ident {
-            fn eq(&self, _other: &Self) -> $crate::__private::bool {
-                true
-            }
-        }
-
-        impl $crate::__private::Hash for $ident {
-            fn hash<__H: $crate::__private::Hasher>(&self, _state: &mut __H) {}
-        }
-    };
-}
-
-// Not public API.
-#[cfg(not(feature = "extra-traits"))]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_extra_traits_for_custom_keyword {
-    ($ident:ident) => {};
-}
diff --git a/vendor/syn/src/custom_punctuation.rs b/vendor/syn/src/custom_punctuation.rs
deleted file mode 100644
index 1b2c768..0000000
--- a/vendor/syn/src/custom_punctuation.rs
+++ /dev/null
@@ -1,302 +0,0 @@
-/// Define a type that supports parsing and printing a multi-character symbol
-/// as if it were a punctuation token.
-///
-/// # Usage
-///
-/// ```
-/// syn::custom_punctuation!(LeftRightArrow, <=>);
-/// ```
-///
-/// The generated syntax tree node supports the following operations just like
-/// any built-in punctuation token.
-///
-/// - [Peeking] — `input.peek(LeftRightArrow)`
-///
-/// - [Parsing] — `input.parse::<LeftRightArrow>()?`
-///
-/// - [Printing] — `quote!( ... #lrarrow ... )`
-///
-/// - Construction from a [`Span`] — `let lrarrow = LeftRightArrow(sp)`
-///
-/// - Construction from multiple [`Span`] — `let lrarrow = LeftRightArrow([sp, sp, sp])`
-///
-/// - Field access to its spans — `let spans = lrarrow.spans`
-///
-/// [Peeking]: crate::parse::ParseBuffer::peek
-/// [Parsing]: crate::parse::ParseBuffer::parse
-/// [Printing]: quote::ToTokens
-/// [`Span`]: proc_macro2::Span
-///
-/// # Example
-///
-/// ```
-/// use proc_macro2::{TokenStream, TokenTree};
-/// use syn::parse::{Parse, ParseStream, Peek, Result};
-/// use syn::punctuated::Punctuated;
-/// use syn::Expr;
-///
-/// syn::custom_punctuation!(PathSeparator, </>);
-///
-/// // expr </> expr </> expr ...
-/// struct PathSegments {
-///     segments: Punctuated<Expr, PathSeparator>,
-/// }
-///
-/// impl Parse for PathSegments {
-///     fn parse(input: ParseStream) -> Result<Self> {
-///         let mut segments = Punctuated::new();
-///
-///         let first = parse_until(input, PathSeparator)?;
-///         segments.push_value(syn::parse2(first)?);
-///
-///         while input.peek(PathSeparator) {
-///             segments.push_punct(input.parse()?);
-///
-///             let next = parse_until(input, PathSeparator)?;
-///             segments.push_value(syn::parse2(next)?);
-///         }
-///
-///         Ok(PathSegments { segments })
-///     }
-/// }
-///
-/// fn parse_until<E: Peek>(input: ParseStream, end: E) -> Result<TokenStream> {
-///     let mut tokens = TokenStream::new();
-///     while !input.is_empty() && !input.peek(end) {
-///         let next: TokenTree = input.parse()?;
-///         tokens.extend(Some(next));
-///     }
-///     Ok(tokens)
-/// }
-///
-/// fn main() {
-///     let input = r#" a::b </> c::d::e "#;
-///     let _: PathSegments = syn::parse_str(input).unwrap();
-/// }
-/// ```
-#[macro_export]
-macro_rules! custom_punctuation {
-    ($ident:ident, $($tt:tt)+) => {
-        pub struct $ident {
-            pub spans: $crate::custom_punctuation_repr!($($tt)+),
-        }
-
-        #[doc(hidden)]
-        #[allow(dead_code, non_snake_case)]
-        pub fn $ident<__S: $crate::__private::IntoSpans<$crate::custom_punctuation_repr!($($tt)+)>>(
-            spans: __S,
-        ) -> $ident {
-            let _validate_len = 0 $(+ $crate::custom_punctuation_len!(strict, $tt))*;
-            $ident {
-                spans: $crate::__private::IntoSpans::into_spans(spans)
-            }
-        }
-
-        const _: () = {
-            impl $crate::__private::Default for $ident {
-                fn default() -> Self {
-                    $ident($crate::__private::Span::call_site())
-                }
-            }
-
-            $crate::impl_parse_for_custom_punctuation!($ident, $($tt)+);
-            $crate::impl_to_tokens_for_custom_punctuation!($ident, $($tt)+);
-            $crate::impl_clone_for_custom_punctuation!($ident, $($tt)+);
-            $crate::impl_extra_traits_for_custom_punctuation!($ident, $($tt)+);
-        };
-    };
-}
-
-// Not public API.
-#[cfg(feature = "parsing")]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_parse_for_custom_punctuation {
-    ($ident:ident, $($tt:tt)+) => {
-        impl $crate::__private::CustomToken for $ident {
-            fn peek(cursor: $crate::buffer::Cursor) -> $crate::__private::bool {
-                $crate::__private::peek_punct(cursor, $crate::stringify_punct!($($tt)+))
-            }
-
-            fn display() -> &'static $crate::__private::str {
-                $crate::__private::concat!("`", $crate::stringify_punct!($($tt)+), "`")
-            }
-        }
-
-        impl $crate::parse::Parse for $ident {
-            fn parse(input: $crate::parse::ParseStream) -> $crate::parse::Result<$ident> {
-                let spans: $crate::custom_punctuation_repr!($($tt)+) =
-                    $crate::__private::parse_punct(input, $crate::stringify_punct!($($tt)+))?;
-                Ok($ident(spans))
-            }
-        }
-    };
-}
-
-// Not public API.
-#[cfg(not(feature = "parsing"))]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_parse_for_custom_punctuation {
-    ($ident:ident, $($tt:tt)+) => {};
-}
-
-// Not public API.
-#[cfg(feature = "printing")]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_to_tokens_for_custom_punctuation {
-    ($ident:ident, $($tt:tt)+) => {
-        impl $crate::__private::ToTokens for $ident {
-            fn to_tokens(&self, tokens: &mut $crate::__private::TokenStream2) {
-                $crate::__private::print_punct($crate::stringify_punct!($($tt)+), &self.spans, tokens)
-            }
-        }
-    };
-}
-
-// Not public API.
-#[cfg(not(feature = "printing"))]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_to_tokens_for_custom_punctuation {
-    ($ident:ident, $($tt:tt)+) => {};
-}
-
-// Not public API.
-#[cfg(feature = "clone-impls")]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_clone_for_custom_punctuation {
-    ($ident:ident, $($tt:tt)+) => {
-        impl $crate::__private::Copy for $ident {}
-
-        #[allow(clippy::expl_impl_clone_on_copy)]
-        impl $crate::__private::Clone for $ident {
-            fn clone(&self) -> Self {
-                *self
-            }
-        }
-    };
-}
-
-// Not public API.
-#[cfg(not(feature = "clone-impls"))]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_clone_for_custom_punctuation {
-    ($ident:ident, $($tt:tt)+) => {};
-}
-
-// Not public API.
-#[cfg(feature = "extra-traits")]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_extra_traits_for_custom_punctuation {
-    ($ident:ident, $($tt:tt)+) => {
-        impl $crate::__private::Debug for $ident {
-            fn fmt(&self, f: &mut $crate::__private::Formatter) -> $crate::__private::FmtResult {
-                $crate::__private::Formatter::write_str(f, $crate::__private::stringify!($ident))
-            }
-        }
-
-        impl $crate::__private::Eq for $ident {}
-
-        impl $crate::__private::PartialEq for $ident {
-            fn eq(&self, _other: &Self) -> $crate::__private::bool {
-                true
-            }
-        }
-
-        impl $crate::__private::Hash for $ident {
-            fn hash<__H: $crate::__private::Hasher>(&self, _state: &mut __H) {}
-        }
-    };
-}
-
-// Not public API.
-#[cfg(not(feature = "extra-traits"))]
-#[doc(hidden)]
-#[macro_export]
-macro_rules! impl_extra_traits_for_custom_punctuation {
-    ($ident:ident, $($tt:tt)+) => {};
-}
-
-// Not public API.
-#[doc(hidden)]
-#[macro_export]
-macro_rules! custom_punctuation_repr {
-    ($($tt:tt)+) => {
-        [$crate::__private::Span; 0 $(+ $crate::custom_punctuation_len!(lenient, $tt))+]
-    };
-}
-
-// Not public API.
-#[doc(hidden)]
-#[macro_export]
-#[rustfmt::skip]
-macro_rules! custom_punctuation_len {
-    ($mode:ident, +)     => { 1 };
-    ($mode:ident, +=)    => { 2 };
-    ($mode:ident, &)     => { 1 };
-    ($mode:ident, &&)    => { 2 };
-    ($mode:ident, &=)    => { 2 };
-    ($mode:ident, @)     => { 1 };
-    ($mode:ident, !)     => { 1 };
-    ($mode:ident, ^)     => { 1 };
-    ($mode:ident, ^=)    => { 2 };
-    ($mode:ident, :)     => { 1 };
-    ($mode:ident, ::)    => { 2 };
-    ($mode:ident, ,)     => { 1 };
-    ($mode:ident, /)     => { 1 };
-    ($mode:ident, /=)    => { 2 };
-    ($mode:ident, .)     => { 1 };
-    ($mode:ident, ..)    => { 2 };
-    ($mode:ident, ...)   => { 3 };
-    ($mode:ident, ..=)   => { 3 };
-    ($mode:ident, =)     => { 1 };
-    ($mode:ident, ==)    => { 2 };
-    ($mode:ident, >=)    => { 2 };
-    ($mode:ident, >)     => { 1 };
-    ($mode:ident, <=)    => { 2 };
-    ($mode:ident, <)     => { 1 };
-    ($mode:ident, *=)    => { 2 };
-    ($mode:ident, !=)    => { 2 };
-    ($mode:ident, |)     => { 1 };
-    ($mode:ident, |=)    => { 2 };
-    ($mode:ident, ||)    => { 2 };
-    ($mode:ident, #)     => { 1 };
-    ($mode:ident, ?)     => { 1 };
-    ($mode:ident, ->)    => { 2 };
-    ($mode:ident, <-)    => { 2 };
-    ($mode:ident, %)     => { 1 };
-    ($mode:ident, %=)    => { 2 };
-    ($mode:ident, =>)    => { 2 };
-    ($mode:ident, ;)     => { 1 };
-    ($mode:ident, <<)    => { 2 };
-    ($mode:ident, <<=)   => { 3 };
-    ($mode:ident, >>)    => { 2 };
-    ($mode:ident, >>=)   => { 3 };
-    ($mode:ident, *)     => { 1 };
-    ($mode:ident, -)     => { 1 };
-    ($mode:ident, -=)    => { 2 };
-    ($mode:ident, ~)     => { 1 };
-    (lenient, $tt:tt)    => { 0 };
-    (strict, $tt:tt)     => {{ $crate::custom_punctuation_unexpected!($tt); 0 }};
-}
-
-// Not public API.
-#[doc(hidden)]
-#[macro_export]
-macro_rules! custom_punctuation_unexpected {
-    () => {};
-}
-
-// Not public API.
-#[doc(hidden)]
-#[macro_export]
-macro_rules! stringify_punct {
-    ($($tt:tt)+) => {
-        $crate::__private::concat!($($crate::__private::stringify!($tt)),+)
-    };
-}
diff --git a/vendor/syn/src/data.rs b/vendor/syn/src/data.rs
deleted file mode 100644
index 134b76b..0000000
--- a/vendor/syn/src/data.rs
+++ /dev/null
@@ -1,404 +0,0 @@
-use super::*;
-use crate::punctuated::Punctuated;
-
-ast_struct! {
-    /// An enum variant.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct Variant {
-        pub attrs: Vec<Attribute>,
-
-        /// Name of the variant.
-        pub ident: Ident,
-
-        /// Content stored in the variant.
-        pub fields: Fields,
-
-        /// Explicit discriminant: `Variant = 1`
-        pub discriminant: Option<(Token![=], Expr)>,
-    }
-}
-
-ast_enum_of_structs! {
-    /// Data stored within an enum variant or struct.
-    ///
-    /// # Syntax tree enum
-    ///
-    /// This type is a [syntax tree enum].
-    ///
-    /// [syntax tree enum]: Expr#syntax-tree-enums
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub enum Fields {
-        /// Named fields of a struct or struct variant such as `Point { x: f64,
-        /// y: f64 }`.
-        Named(FieldsNamed),
-
-        /// Unnamed fields of a tuple struct or tuple variant such as `Some(T)`.
-        Unnamed(FieldsUnnamed),
-
-        /// Unit struct or unit variant such as `None`.
-        Unit,
-    }
-}
-
-ast_struct! {
-    /// Named fields of a struct or struct variant such as `Point { x: f64,
-    /// y: f64 }`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct FieldsNamed {
-        pub brace_token: token::Brace,
-        pub named: Punctuated<Field, Token![,]>,
-    }
-}
-
-ast_struct! {
-    /// Unnamed fields of a tuple struct or tuple variant such as `Some(T)`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct FieldsUnnamed {
-        pub paren_token: token::Paren,
-        pub unnamed: Punctuated<Field, Token![,]>,
-    }
-}
-
-impl Fields {
-    /// Get an iterator over the borrowed [`Field`] items in this object. This
-    /// iterator can be used to iterate over a named or unnamed struct or
-    /// variant's fields uniformly.
-    pub fn iter(&self) -> punctuated::Iter<Field> {
-        match self {
-            Fields::Unit => crate::punctuated::empty_punctuated_iter(),
-            Fields::Named(f) => f.named.iter(),
-            Fields::Unnamed(f) => f.unnamed.iter(),
-        }
-    }
-
-    /// Get an iterator over the mutably borrowed [`Field`] items in this
-    /// object. This iterator can be used to iterate over a named or unnamed
-    /// struct or variant's fields uniformly.
-    pub fn iter_mut(&mut self) -> punctuated::IterMut<Field> {
-        match self {
-            Fields::Unit => crate::punctuated::empty_punctuated_iter_mut(),
-            Fields::Named(f) => f.named.iter_mut(),
-            Fields::Unnamed(f) => f.unnamed.iter_mut(),
-        }
-    }
-
-    /// Returns the number of fields.
-    pub fn len(&self) -> usize {
-        match self {
-            Fields::Unit => 0,
-            Fields::Named(f) => f.named.len(),
-            Fields::Unnamed(f) => f.unnamed.len(),
-        }
-    }
-
-    /// Returns `true` if there are zero fields.
-    pub fn is_empty(&self) -> bool {
-        match self {
-            Fields::Unit => true,
-            Fields::Named(f) => f.named.is_empty(),
-            Fields::Unnamed(f) => f.unnamed.is_empty(),
-        }
-    }
-}
-
-impl IntoIterator for Fields {
-    type Item = Field;
-    type IntoIter = punctuated::IntoIter<Field>;
-
-    fn into_iter(self) -> Self::IntoIter {
-        match self {
-            Fields::Unit => Punctuated::<Field, ()>::new().into_iter(),
-            Fields::Named(f) => f.named.into_iter(),
-            Fields::Unnamed(f) => f.unnamed.into_iter(),
-        }
-    }
-}
-
-impl<'a> IntoIterator for &'a Fields {
-    type Item = &'a Field;
-    type IntoIter = punctuated::Iter<'a, Field>;
-
-    fn into_iter(self) -> Self::IntoIter {
-        self.iter()
-    }
-}
-
-impl<'a> IntoIterator for &'a mut Fields {
-    type Item = &'a mut Field;
-    type IntoIter = punctuated::IterMut<'a, Field>;
-
-    fn into_iter(self) -> Self::IntoIter {
-        self.iter_mut()
-    }
-}
-
-ast_struct! {
-    /// A field of a struct or enum variant.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct Field {
-        pub attrs: Vec<Attribute>,
-
-        pub vis: Visibility,
-
-        pub mutability: FieldMutability,
-
-        /// Name of the field, if any.
-        ///
-        /// Fields of tuple structs have no names.
-        pub ident: Option<Ident>,
-
-        pub colon_token: Option<Token![:]>,
-
-        pub ty: Type,
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::*;
-    use crate::ext::IdentExt as _;
-    #[cfg(not(feature = "full"))]
-    use crate::parse::discouraged::Speculative as _;
-    use crate::parse::{Parse, ParseStream, Result};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Variant {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let _visibility: Visibility = input.parse()?;
-            let ident: Ident = input.parse()?;
-            let fields = if input.peek(token::Brace) {
-                Fields::Named(input.parse()?)
-            } else if input.peek(token::Paren) {
-                Fields::Unnamed(input.parse()?)
-            } else {
-                Fields::Unit
-            };
-            let discriminant = if input.peek(Token![=]) {
-                let eq_token: Token![=] = input.parse()?;
-                #[cfg(feature = "full")]
-                let discriminant: Expr = input.parse()?;
-                #[cfg(not(feature = "full"))]
-                let discriminant = {
-                    let begin = input.fork();
-                    let ahead = input.fork();
-                    let mut discriminant: Result<Expr> = ahead.parse();
-                    if discriminant.is_ok() {
-                        input.advance_to(&ahead);
-                    } else if scan_lenient_discriminant(input).is_ok() {
-                        discriminant = Ok(Expr::Verbatim(verbatim::between(&begin, input)));
-                    }
-                    discriminant?
-                };
-                Some((eq_token, discriminant))
-            } else {
-                None
-            };
-            Ok(Variant {
-                attrs,
-                ident,
-                fields,
-                discriminant,
-            })
-        }
-    }
-
-    #[cfg(not(feature = "full"))]
-    pub(crate) fn scan_lenient_discriminant(input: ParseStream) -> Result<()> {
-        use proc_macro2::Delimiter::{self, Brace, Bracket, Parenthesis};
-
-        let consume = |delimiter: Delimiter| {
-            Result::unwrap(input.step(|cursor| match cursor.group(delimiter) {
-                Some((_inside, _span, rest)) => Ok((true, rest)),
-                None => Ok((false, *cursor)),
-            }))
-        };
-
-        macro_rules! consume {
-            [$token:tt] => {
-                input.parse::<Option<Token![$token]>>().unwrap().is_some()
-            };
-        }
-
-        let mut initial = true;
-        let mut depth = 0usize;
-        loop {
-            if initial {
-                if consume![&] {
-                    input.parse::<Option<Token![mut]>>()?;
-                } else if consume![if] || consume![match] || consume![while] {
-                    depth += 1;
-                } else if input.parse::<Option<Lit>>()?.is_some()
-                    || (consume(Brace) || consume(Bracket) || consume(Parenthesis))
-                    || (consume![async] || consume![const] || consume![loop] || consume![unsafe])
-                        && (consume(Brace) || break)
-                {
-                    initial = false;
-                } else if consume![let] {
-                    while !consume![=] {
-                        if !((consume![|] || consume![ref] || consume![mut] || consume![@])
-                            || (consume![!] || input.parse::<Option<Lit>>()?.is_some())
-                            || (consume![..=] || consume![..] || consume![&] || consume![_])
-                            || (consume(Brace) || consume(Bracket) || consume(Parenthesis)))
-                        {
-                            path::parsing::qpath(input, true)?;
-                        }
-                    }
-                } else if input.parse::<Option<Lifetime>>()?.is_some() && !consume![:] {
-                    break;
-                } else if input.parse::<UnOp>().is_err() {
-                    path::parsing::qpath(input, true)?;
-                    initial = consume![!] || depth == 0 && input.peek(token::Brace);
-                }
-            } else if input.is_empty() || input.peek(Token![,]) {
-                return Ok(());
-            } else if depth > 0 && consume(Brace) {
-                if consume![else] && !consume(Brace) {
-                    initial = consume![if] || break;
-                } else {
-                    depth -= 1;
-                }
-            } else if input.parse::<BinOp>().is_ok() || (consume![..] | consume![=]) {
-                initial = true;
-            } else if consume![.] {
-                if input.parse::<Option<LitFloat>>()?.is_none()
-                    && (input.parse::<Member>()?.is_named() && consume![::])
-                {
-                    AngleBracketedGenericArguments::do_parse(None, input)?;
-                }
-            } else if consume![as] {
-                input.parse::<Type>()?;
-            } else if !(consume(Brace) || consume(Bracket) || consume(Parenthesis)) {
-                break;
-            }
-        }
-
-        Err(input.error("unsupported expression"))
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for FieldsNamed {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let content;
-            Ok(FieldsNamed {
-                brace_token: braced!(content in input),
-                named: content.parse_terminated(Field::parse_named, Token![,])?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for FieldsUnnamed {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let content;
-            Ok(FieldsUnnamed {
-                paren_token: parenthesized!(content in input),
-                unnamed: content.parse_terminated(Field::parse_unnamed, Token![,])?,
-            })
-        }
-    }
-
-    impl Field {
-        /// Parses a named (braced struct) field.
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-        pub fn parse_named(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let vis: Visibility = input.parse()?;
-
-            let unnamed_field = cfg!(feature = "full") && input.peek(Token![_]);
-            let ident = if unnamed_field {
-                input.call(Ident::parse_any)
-            } else {
-                input.parse()
-            }?;
-
-            let colon_token: Token![:] = input.parse()?;
-
-            let ty: Type = if unnamed_field
-                && (input.peek(Token![struct])
-                    || input.peek(Token![union]) && input.peek2(token::Brace))
-            {
-                let begin = input.fork();
-                input.call(Ident::parse_any)?;
-                input.parse::<FieldsNamed>()?;
-                Type::Verbatim(verbatim::between(&begin, input))
-            } else {
-                input.parse()?
-            };
-
-            Ok(Field {
-                attrs,
-                vis,
-                mutability: FieldMutability::None,
-                ident: Some(ident),
-                colon_token: Some(colon_token),
-                ty,
-            })
-        }
-
-        /// Parses an unnamed (tuple struct) field.
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-        pub fn parse_unnamed(input: ParseStream) -> Result<Self> {
-            Ok(Field {
-                attrs: input.call(Attribute::parse_outer)?,
-                vis: input.parse()?,
-                mutability: FieldMutability::None,
-                ident: None,
-                colon_token: None,
-                ty: input.parse()?,
-            })
-        }
-    }
-}
-
-#[cfg(feature = "printing")]
-mod printing {
-    use super::*;
-    use crate::print::TokensOrDefault;
-    use proc_macro2::TokenStream;
-    use quote::{ToTokens, TokenStreamExt};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Variant {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(&self.attrs);
-            self.ident.to_tokens(tokens);
-            self.fields.to_tokens(tokens);
-            if let Some((eq_token, disc)) = &self.discriminant {
-                eq_token.to_tokens(tokens);
-                disc.to_tokens(tokens);
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for FieldsNamed {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.brace_token.surround(tokens, |tokens| {
-                self.named.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for FieldsUnnamed {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.paren_token.surround(tokens, |tokens| {
-                self.unnamed.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Field {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(&self.attrs);
-            self.vis.to_tokens(tokens);
-            if let Some(ident) = &self.ident {
-                ident.to_tokens(tokens);
-                TokensOrDefault(&self.colon_token).to_tokens(tokens);
-            }
-            self.ty.to_tokens(tokens);
-        }
-    }
-}
diff --git a/vendor/syn/src/derive.rs b/vendor/syn/src/derive.rs
deleted file mode 100644
index 25fa4c9..0000000
--- a/vendor/syn/src/derive.rs
+++ /dev/null
@@ -1,245 +0,0 @@
-use super::*;
-use crate::punctuated::Punctuated;
-
-ast_struct! {
-    /// Data structure sent to a `proc_macro_derive` macro.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    pub struct DeriveInput {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub ident: Ident,
-        pub generics: Generics,
-        pub data: Data,
-    }
-}
-
-ast_enum! {
-    /// The storage of a struct, enum or union data structure.
-    ///
-    /// # Syntax tree enum
-    ///
-    /// This type is a [syntax tree enum].
-    ///
-    /// [syntax tree enum]: Expr#syntax-tree-enums
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    pub enum Data {
-        Struct(DataStruct),
-        Enum(DataEnum),
-        Union(DataUnion),
-    }
-}
-
-ast_struct! {
-    /// A struct input to a `proc_macro_derive` macro.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    pub struct DataStruct {
-        pub struct_token: Token![struct],
-        pub fields: Fields,
-        pub semi_token: Option<Token![;]>,
-    }
-}
-
-ast_struct! {
-    /// An enum input to a `proc_macro_derive` macro.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    pub struct DataEnum {
-        pub enum_token: Token![enum],
-        pub brace_token: token::Brace,
-        pub variants: Punctuated<Variant, Token![,]>,
-    }
-}
-
-ast_struct! {
-    /// An untagged union input to a `proc_macro_derive` macro.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    pub struct DataUnion {
-        pub union_token: Token![union],
-        pub fields: FieldsNamed,
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::*;
-    use crate::parse::{Parse, ParseStream, Result};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for DeriveInput {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let vis = input.parse::<Visibility>()?;
-
-            let lookahead = input.lookahead1();
-            if lookahead.peek(Token![struct]) {
-                let struct_token = input.parse::<Token![struct]>()?;
-                let ident = input.parse::<Ident>()?;
-                let generics = input.parse::<Generics>()?;
-                let (where_clause, fields, semi) = data_struct(input)?;
-                Ok(DeriveInput {
-                    attrs,
-                    vis,
-                    ident,
-                    generics: Generics {
-                        where_clause,
-                        ..generics
-                    },
-                    data: Data::Struct(DataStruct {
-                        struct_token,
-                        fields,
-                        semi_token: semi,
-                    }),
-                })
-            } else if lookahead.peek(Token![enum]) {
-                let enum_token = input.parse::<Token![enum]>()?;
-                let ident = input.parse::<Ident>()?;
-                let generics = input.parse::<Generics>()?;
-                let (where_clause, brace, variants) = data_enum(input)?;
-                Ok(DeriveInput {
-                    attrs,
-                    vis,
-                    ident,
-                    generics: Generics {
-                        where_clause,
-                        ..generics
-                    },
-                    data: Data::Enum(DataEnum {
-                        enum_token,
-                        brace_token: brace,
-                        variants,
-                    }),
-                })
-            } else if lookahead.peek(Token![union]) {
-                let union_token = input.parse::<Token![union]>()?;
-                let ident = input.parse::<Ident>()?;
-                let generics = input.parse::<Generics>()?;
-                let (where_clause, fields) = data_union(input)?;
-                Ok(DeriveInput {
-                    attrs,
-                    vis,
-                    ident,
-                    generics: Generics {
-                        where_clause,
-                        ..generics
-                    },
-                    data: Data::Union(DataUnion {
-                        union_token,
-                        fields,
-                    }),
-                })
-            } else {
-                Err(lookahead.error())
-            }
-        }
-    }
-
-    pub(crate) fn data_struct(
-        input: ParseStream,
-    ) -> Result<(Option<WhereClause>, Fields, Option<Token![;]>)> {
-        let mut lookahead = input.lookahead1();
-        let mut where_clause = None;
-        if lookahead.peek(Token![where]) {
-            where_clause = Some(input.parse()?);
-            lookahead = input.lookahead1();
-        }
-
-        if where_clause.is_none() && lookahead.peek(token::Paren) {
-            let fields = input.parse()?;
-
-            lookahead = input.lookahead1();
-            if lookahead.peek(Token![where]) {
-                where_clause = Some(input.parse()?);
-                lookahead = input.lookahead1();
-            }
-
-            if lookahead.peek(Token![;]) {
-                let semi = input.parse()?;
-                Ok((where_clause, Fields::Unnamed(fields), Some(semi)))
-            } else {
-                Err(lookahead.error())
-            }
-        } else if lookahead.peek(token::Brace) {
-            let fields = input.parse()?;
-            Ok((where_clause, Fields::Named(fields), None))
-        } else if lookahead.peek(Token![;]) {
-            let semi = input.parse()?;
-            Ok((where_clause, Fields::Unit, Some(semi)))
-        } else {
-            Err(lookahead.error())
-        }
-    }
-
-    pub(crate) fn data_enum(
-        input: ParseStream,
-    ) -> Result<(
-        Option<WhereClause>,
-        token::Brace,
-        Punctuated<Variant, Token![,]>,
-    )> {
-        let where_clause = input.parse()?;
-
-        let content;
-        let brace = braced!(content in input);
-        let variants = content.parse_terminated(Variant::parse, Token![,])?;
-
-        Ok((where_clause, brace, variants))
-    }
-
-    pub(crate) fn data_union(input: ParseStream) -> Result<(Option<WhereClause>, FieldsNamed)> {
-        let where_clause = input.parse()?;
-        let fields = input.parse()?;
-        Ok((where_clause, fields))
-    }
-}
-
-#[cfg(feature = "printing")]
-mod printing {
-    use super::*;
-    use crate::attr::FilterAttrs;
-    use crate::print::TokensOrDefault;
-    use proc_macro2::TokenStream;
-    use quote::ToTokens;
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for DeriveInput {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            for attr in self.attrs.outer() {
-                attr.to_tokens(tokens);
-            }
-            self.vis.to_tokens(tokens);
-            match &self.data {
-                Data::Struct(d) => d.struct_token.to_tokens(tokens),
-                Data::Enum(d) => d.enum_token.to_tokens(tokens),
-                Data::Union(d) => d.union_token.to_tokens(tokens),
-            }
-            self.ident.to_tokens(tokens);
-            self.generics.to_tokens(tokens);
-            match &self.data {
-                Data::Struct(data) => match &data.fields {
-                    Fields::Named(fields) => {
-                        self.generics.where_clause.to_tokens(tokens);
-                        fields.to_tokens(tokens);
-                    }
-                    Fields::Unnamed(fields) => {
-                        fields.to_tokens(tokens);
-                        self.generics.where_clause.to_tokens(tokens);
-                        TokensOrDefault(&data.semi_token).to_tokens(tokens);
-                    }
-                    Fields::Unit => {
-                        self.generics.where_clause.to_tokens(tokens);
-                        TokensOrDefault(&data.semi_token).to_tokens(tokens);
-                    }
-                },
-                Data::Enum(data) => {
-                    self.generics.where_clause.to_tokens(tokens);
-                    data.brace_token.surround(tokens, |tokens| {
-                        data.variants.to_tokens(tokens);
-                    });
-                }
-                Data::Union(data) => {
-                    self.generics.where_clause.to_tokens(tokens);
-                    data.fields.to_tokens(tokens);
-                }
-            }
-        }
-    }
-}
diff --git a/vendor/syn/src/discouraged.rs b/vendor/syn/src/discouraged.rs
deleted file mode 100644
index fb98d63..0000000
--- a/vendor/syn/src/discouraged.rs
+++ /dev/null
@@ -1,219 +0,0 @@
-//! Extensions to the parsing API with niche applicability.
-
-use super::*;
-use proc_macro2::extra::DelimSpan;
-
-/// Extensions to the `ParseStream` API to support speculative parsing.
-pub trait Speculative {
-    /// Advance this parse stream to the position of a forked parse stream.
-    ///
-    /// This is the opposite operation to [`ParseStream::fork`]. You can fork a
-    /// parse stream, perform some speculative parsing, then join the original
-    /// stream to the fork to "commit" the parsing from the fork to the main
-    /// stream.
-    ///
-    /// If you can avoid doing this, you should, as it limits the ability to
-    /// generate useful errors. That said, it is often the only way to parse
-    /// syntax of the form `A* B*` for arbitrary syntax `A` and `B`. The problem
-    /// is that when the fork fails to parse an `A`, it's impossible to tell
-    /// whether that was because of a syntax error and the user meant to provide
-    /// an `A`, or that the `A`s are finished and it's time to start parsing
-    /// `B`s. Use with care.
-    ///
-    /// Also note that if `A` is a subset of `B`, `A* B*` can be parsed by
-    /// parsing `B*` and removing the leading members of `A` from the
-    /// repetition, bypassing the need to involve the downsides associated with
-    /// speculative parsing.
-    ///
-    /// [`ParseStream::fork`]: ParseBuffer::fork
-    ///
-    /// # Example
-    ///
-    /// There has been chatter about the possibility of making the colons in the
-    /// turbofish syntax like `path::to::<T>` no longer required by accepting
-    /// `path::to<T>` in expression position. Specifically, according to [RFC
-    /// 2544], [`PathSegment`] parsing should always try to consume a following
-    /// `<` token as the start of generic arguments, and reset to the `<` if
-    /// that fails (e.g. the token is acting as a less-than operator).
-    ///
-    /// This is the exact kind of parsing behavior which requires the "fork,
-    /// try, commit" behavior that [`ParseStream::fork`] discourages. With
-    /// `advance_to`, we can avoid having to parse the speculatively parsed
-    /// content a second time.
-    ///
-    /// This change in behavior can be implemented in syn by replacing just the
-    /// `Parse` implementation for `PathSegment`:
-    ///
-    /// ```
-    /// # use syn::ext::IdentExt;
-    /// use syn::parse::discouraged::Speculative;
-    /// # use syn::parse::{Parse, ParseStream};
-    /// # use syn::{Ident, PathArguments, Result, Token};
-    ///
-    /// pub struct PathSegment {
-    ///     pub ident: Ident,
-    ///     pub arguments: PathArguments,
-    /// }
-    /// #
-    /// # impl<T> From<T> for PathSegment
-    /// # where
-    /// #     T: Into<Ident>,
-    /// # {
-    /// #     fn from(ident: T) -> Self {
-    /// #         PathSegment {
-    /// #             ident: ident.into(),
-    /// #             arguments: PathArguments::None,
-    /// #         }
-    /// #     }
-    /// # }
-    ///
-    /// impl Parse for PathSegment {
-    ///     fn parse(input: ParseStream) -> Result<Self> {
-    ///         if input.peek(Token![super])
-    ///             || input.peek(Token![self])
-    ///             || input.peek(Token![Self])
-    ///             || input.peek(Token![crate])
-    ///         {
-    ///             let ident = input.call(Ident::parse_any)?;
-    ///             return Ok(PathSegment::from(ident));
-    ///         }
-    ///
-    ///         let ident = input.parse()?;
-    ///         if input.peek(Token![::]) && input.peek3(Token![<]) {
-    ///             return Ok(PathSegment {
-    ///                 ident,
-    ///                 arguments: PathArguments::AngleBracketed(input.parse()?),
-    ///             });
-    ///         }
-    ///         if input.peek(Token![<]) && !input.peek(Token![<=]) {
-    ///             let fork = input.fork();
-    ///             if let Ok(arguments) = fork.parse() {
-    ///                 input.advance_to(&fork);
-    ///                 return Ok(PathSegment {
-    ///                     ident,
-    ///                     arguments: PathArguments::AngleBracketed(arguments),
-    ///                 });
-    ///             }
-    ///         }
-    ///         Ok(PathSegment::from(ident))
-    ///     }
-    /// }
-    ///
-    /// # syn::parse_str::<PathSegment>("a<b,c>").unwrap();
-    /// ```
-    ///
-    /// # Drawbacks
-    ///
-    /// The main drawback of this style of speculative parsing is in error
-    /// presentation. Even if the lookahead is the "correct" parse, the error
-    /// that is shown is that of the "fallback" parse. To use the same example
-    /// as the turbofish above, take the following unfinished "turbofish":
-    ///
-    /// ```text
-    /// let _ = f<&'a fn(), for<'a> serde::>();
-    /// ```
-    ///
-    /// If this is parsed as generic arguments, we can provide the error message
-    ///
-    /// ```text
-    /// error: expected identifier
-    ///  --> src.rs:L:C
-    ///   |
-    /// L | let _ = f<&'a fn(), for<'a> serde::>();
-    ///   |                                    ^
-    /// ```
-    ///
-    /// but if parsed using the above speculative parsing, it falls back to
-    /// assuming that the `<` is a less-than when it fails to parse the generic
-    /// arguments, and tries to interpret the `&'a` as the start of a labelled
-    /// loop, resulting in the much less helpful error
-    ///
-    /// ```text
-    /// error: expected `:`
-    ///  --> src.rs:L:C
-    ///   |
-    /// L | let _ = f<&'a fn(), for<'a> serde::>();
-    ///   |               ^^
-    /// ```
-    ///
-    /// This can be mitigated with various heuristics (two examples: show both
-    /// forks' parse errors, or show the one that consumed more tokens), but
-    /// when you can control the grammar, sticking to something that can be
-    /// parsed LL(3) and without the LL(*) speculative parsing this makes
-    /// possible, displaying reasonable errors becomes much more simple.
-    ///
-    /// [RFC 2544]: https://github.com/rust-lang/rfcs/pull/2544
-    /// [`PathSegment`]: crate::PathSegment
-    ///
-    /// # Performance
-    ///
-    /// This method performs a cheap fixed amount of work that does not depend
-    /// on how far apart the two streams are positioned.
-    ///
-    /// # Panics
-    ///
-    /// The forked stream in the argument of `advance_to` must have been
-    /// obtained by forking `self`. Attempting to advance to any other stream
-    /// will cause a panic.
-    fn advance_to(&self, fork: &Self);
-}
-
-impl<'a> Speculative for ParseBuffer<'a> {
-    fn advance_to(&self, fork: &Self) {
-        if !crate::buffer::same_scope(self.cursor(), fork.cursor()) {
-            panic!("Fork was not derived from the advancing parse stream");
-        }
-
-        let (self_unexp, self_sp) = inner_unexpected(self);
-        let (fork_unexp, fork_sp) = inner_unexpected(fork);
-        if !Rc::ptr_eq(&self_unexp, &fork_unexp) {
-            match (fork_sp, self_sp) {
-                // Unexpected set on the fork, but not on `self`, copy it over.
-                (Some(span), None) => {
-                    self_unexp.set(Unexpected::Some(span));
-                }
-                // Unexpected unset. Use chain to propagate errors from fork.
-                (None, None) => {
-                    fork_unexp.set(Unexpected::Chain(self_unexp));
-
-                    // Ensure toplevel 'unexpected' tokens from the fork don't
-                    // bubble up the chain by replacing the root `unexpected`
-                    // pointer, only 'unexpected' tokens from existing group
-                    // parsers should bubble.
-                    fork.unexpected
-                        .set(Some(Rc::new(Cell::new(Unexpected::None))));
-                }
-                // Unexpected has been set on `self`. No changes needed.
-                (_, Some(_)) => {}
-            }
-        }
-
-        // See comment on `cell` in the struct definition.
-        self.cell
-            .set(unsafe { mem::transmute::<Cursor, Cursor<'static>>(fork.cursor()) });
-    }
-}
-
-/// Extensions to the `ParseStream` API to support manipulating invisible
-/// delimiters the same as if they were visible.
-pub trait AnyDelimiter {
-    /// Returns the delimiter, the span of the delimiter token, and the nested
-    /// contents for further parsing.
-    fn parse_any_delimiter(&self) -> Result<(Delimiter, DelimSpan, ParseBuffer)>;
-}
-
-impl<'a> AnyDelimiter for ParseBuffer<'a> {
-    fn parse_any_delimiter(&self) -> Result<(Delimiter, DelimSpan, ParseBuffer)> {
-        self.step(|cursor| {
-            if let Some((content, delimiter, span, rest)) = cursor.any_group() {
-                let scope = crate::buffer::close_span_of_group(*cursor);
-                let nested = crate::parse::advance_step_cursor(cursor, content);
-                let unexpected = crate::parse::get_unexpected(self);
-                let content = crate::parse::new_parse_buffer(scope, nested, unexpected);
-                Ok(((delimiter, span, content), rest))
-            } else {
-                Err(cursor.error("expected any delimiter"))
-            }
-        })
-    }
-}
diff --git a/vendor/syn/src/drops.rs b/vendor/syn/src/drops.rs
deleted file mode 100644
index 89b42d8..0000000
--- a/vendor/syn/src/drops.rs
+++ /dev/null
@@ -1,58 +0,0 @@
-use std::iter;
-use std::mem::ManuallyDrop;
-use std::ops::{Deref, DerefMut};
-use std::option;
-use std::slice;
-
-#[repr(transparent)]
-pub(crate) struct NoDrop<T: ?Sized>(ManuallyDrop<T>);
-
-impl<T> NoDrop<T> {
-    pub(crate) fn new(value: T) -> Self
-    where
-        T: TrivialDrop,
-    {
-        NoDrop(ManuallyDrop::new(value))
-    }
-}
-
-impl<T: ?Sized> Deref for NoDrop<T> {
-    type Target = T;
-    fn deref(&self) -> &Self::Target {
-        &self.0
-    }
-}
-
-impl<T: ?Sized> DerefMut for NoDrop<T> {
-    fn deref_mut(&mut self) -> &mut Self::Target {
-        &mut self.0
-    }
-}
-
-pub(crate) trait TrivialDrop {}
-
-impl<T> TrivialDrop for iter::Empty<T> {}
-impl<'a, T> TrivialDrop for slice::Iter<'a, T> {}
-impl<'a, T> TrivialDrop for slice::IterMut<'a, T> {}
-impl<'a, T> TrivialDrop for option::IntoIter<&'a T> {}
-impl<'a, T> TrivialDrop for option::IntoIter<&'a mut T> {}
-
-#[test]
-fn test_needs_drop() {
-    use std::mem::needs_drop;
-
-    struct NeedsDrop;
-
-    impl Drop for NeedsDrop {
-        fn drop(&mut self) {}
-    }
-
-    assert!(needs_drop::<NeedsDrop>());
-
-    // Test each of the types with a handwritten TrivialDrop impl above.
-    assert!(!needs_drop::<iter::Empty<NeedsDrop>>());
-    assert!(!needs_drop::<slice::Iter<NeedsDrop>>());
-    assert!(!needs_drop::<slice::IterMut<NeedsDrop>>());
-    assert!(!needs_drop::<option::IntoIter<&NeedsDrop>>());
-    assert!(!needs_drop::<option::IntoIter<&mut NeedsDrop>>());
-}
diff --git a/vendor/syn/src/error.rs b/vendor/syn/src/error.rs
deleted file mode 100644
index 71247cd..0000000
--- a/vendor/syn/src/error.rs
+++ /dev/null
@@ -1,467 +0,0 @@
-#[cfg(feature = "parsing")]
-use crate::buffer::Cursor;
-use crate::thread::ThreadBound;
-use proc_macro2::{
-    Delimiter, Group, Ident, LexError, Literal, Punct, Spacing, Span, TokenStream, TokenTree,
-};
-#[cfg(feature = "printing")]
-use quote::ToTokens;
-use std::fmt::{self, Debug, Display};
-use std::slice;
-use std::vec;
-
-/// The result of a Syn parser.
-pub type Result<T> = std::result::Result<T, Error>;
-
-/// Error returned when a Syn parser cannot parse the input tokens.
-///
-/// # Error reporting in proc macros
-///
-/// The correct way to report errors back to the compiler from a procedural
-/// macro is by emitting an appropriately spanned invocation of
-/// [`compile_error!`] in the generated code. This produces a better diagnostic
-/// message than simply panicking the macro.
-///
-/// [`compile_error!`]: std::compile_error!
-///
-/// When parsing macro input, the [`parse_macro_input!`] macro handles the
-/// conversion to `compile_error!` automatically.
-///
-/// [`parse_macro_input!`]: crate::parse_macro_input!
-///
-/// ```
-/// # extern crate proc_macro;
-/// #
-/// use proc_macro::TokenStream;
-/// use syn::parse::{Parse, ParseStream, Result};
-/// use syn::{parse_macro_input, ItemFn};
-///
-/// # const IGNORE: &str = stringify! {
-/// #[proc_macro_attribute]
-/// # };
-/// pub fn my_attr(args: TokenStream, input: TokenStream) -> TokenStream {
-///     let args = parse_macro_input!(args as MyAttrArgs);
-///     let input = parse_macro_input!(input as ItemFn);
-///
-///     /* ... */
-///     # TokenStream::new()
-/// }
-///
-/// struct MyAttrArgs {
-///     # _k: [(); { stringify! {
-///     ...
-///     # }; 0 }]
-/// }
-///
-/// impl Parse for MyAttrArgs {
-///     fn parse(input: ParseStream) -> Result<Self> {
-///         # stringify! {
-///         ...
-///         # };
-///         # unimplemented!()
-///     }
-/// }
-/// ```
-///
-/// For errors that arise later than the initial parsing stage, the
-/// [`.to_compile_error()`] or [`.into_compile_error()`] methods can be used to
-/// perform an explicit conversion to `compile_error!`.
-///
-/// [`.to_compile_error()`]: Error::to_compile_error
-/// [`.into_compile_error()`]: Error::into_compile_error
-///
-/// ```
-/// # extern crate proc_macro;
-/// #
-/// # use proc_macro::TokenStream;
-/// # use syn::{parse_macro_input, DeriveInput};
-/// #
-/// # const IGNORE: &str = stringify! {
-/// #[proc_macro_derive(MyDerive)]
-/// # };
-/// pub fn my_derive(input: TokenStream) -> TokenStream {
-///     let input = parse_macro_input!(input as DeriveInput);
-///
-///     // fn(DeriveInput) -> syn::Result<proc_macro2::TokenStream>
-///     expand::my_derive(input)
-///         .unwrap_or_else(syn::Error::into_compile_error)
-///         .into()
-/// }
-/// #
-/// # mod expand {
-/// #     use proc_macro2::TokenStream;
-/// #     use syn::{DeriveInput, Result};
-/// #
-/// #     pub fn my_derive(input: DeriveInput) -> Result<TokenStream> {
-/// #         unimplemented!()
-/// #     }
-/// # }
-/// ```
-pub struct Error {
-    messages: Vec<ErrorMessage>,
-}
-
-struct ErrorMessage {
-    // Span is implemented as an index into a thread-local interner to keep the
-    // size small. It is not safe to access from a different thread. We want
-    // errors to be Send and Sync to play nicely with ecosystem crates for error
-    // handling, so pin the span we're given to its original thread and assume
-    // it is Span::call_site if accessed from any other thread.
-    span: ThreadBound<SpanRange>,
-    message: String,
-}
-
-// Cannot use std::ops::Range<Span> because that does not implement Copy,
-// whereas ThreadBound<T> requires a Copy impl as a way to ensure no Drop impls
-// are involved.
-struct SpanRange {
-    start: Span,
-    end: Span,
-}
-
-#[cfg(test)]
-struct _Test
-where
-    Error: Send + Sync;
-
-impl Error {
-    /// Usually the [`ParseStream::error`] method will be used instead, which
-    /// automatically uses the correct span from the current position of the
-    /// parse stream.
-    ///
-    /// Use `Error::new` when the error needs to be triggered on some span other
-    /// than where the parse stream is currently positioned.
-    ///
-    /// [`ParseStream::error`]: crate::parse::ParseBuffer::error
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use syn::{Error, Ident, LitStr, Result, Token};
-    /// use syn::parse::ParseStream;
-    ///
-    /// // Parses input that looks like `name = "string"` where the key must be
-    /// // the identifier `name` and the value may be any string literal.
-    /// // Returns the string literal.
-    /// fn parse_name(input: ParseStream) -> Result<LitStr> {
-    ///     let name_token: Ident = input.parse()?;
-    ///     if name_token != "name" {
-    ///         // Trigger an error not on the current position of the stream,
-    ///         // but on the position of the unexpected identifier.
-    ///         return Err(Error::new(name_token.span(), "expected `name`"));
-    ///     }
-    ///     input.parse::<Token![=]>()?;
-    ///     let s: LitStr = input.parse()?;
-    ///     Ok(s)
-    /// }
-    /// ```
-    pub fn new<T: Display>(span: Span, message: T) -> Self {
-        return new(span, message.to_string());
-
-        fn new(span: Span, message: String) -> Error {
-            Error {
-                messages: vec![ErrorMessage {
-                    span: ThreadBound::new(SpanRange {
-                        start: span,
-                        end: span,
-                    }),
-                    message,
-                }],
-            }
-        }
-    }
-
-    /// Creates an error with the specified message spanning the given syntax
-    /// tree node.
-    ///
-    /// Unlike the `Error::new` constructor, this constructor takes an argument
-    /// `tokens` which is a syntax tree node. This allows the resulting `Error`
-    /// to attempt to span all tokens inside of `tokens`. While you would
-    /// typically be able to use the `Spanned` trait with the above `Error::new`
-    /// constructor, implementation limitations today mean that
-    /// `Error::new_spanned` may provide a higher-quality error message on
-    /// stable Rust.
-    ///
-    /// When in doubt it's recommended to stick to `Error::new` (or
-    /// `ParseStream::error`)!
-    #[cfg(feature = "printing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    pub fn new_spanned<T: ToTokens, U: Display>(tokens: T, message: U) -> Self {
-        return new_spanned(tokens.into_token_stream(), message.to_string());
-
-        fn new_spanned(tokens: TokenStream, message: String) -> Error {
-            let mut iter = tokens.into_iter();
-            let start = iter.next().map_or_else(Span::call_site, |t| t.span());
-            let end = iter.last().map_or(start, |t| t.span());
-            Error {
-                messages: vec![ErrorMessage {
-                    span: ThreadBound::new(SpanRange { start, end }),
-                    message,
-                }],
-            }
-        }
-    }
-
-    /// The source location of the error.
-    ///
-    /// Spans are not thread-safe so this function returns `Span::call_site()`
-    /// if called from a different thread than the one on which the `Error` was
-    /// originally created.
-    pub fn span(&self) -> Span {
-        let SpanRange { start, end } = match self.messages[0].span.get() {
-            Some(span) => *span,
-            None => return Span::call_site(),
-        };
-        start.join(end).unwrap_or(start)
-    }
-
-    /// Render the error as an invocation of [`compile_error!`].
-    ///
-    /// The [`parse_macro_input!`] macro provides a convenient way to invoke
-    /// this method correctly in a procedural macro.
-    ///
-    /// [`compile_error!`]: std::compile_error!
-    /// [`parse_macro_input!`]: crate::parse_macro_input!
-    pub fn to_compile_error(&self) -> TokenStream {
-        self.messages
-            .iter()
-            .map(ErrorMessage::to_compile_error)
-            .collect()
-    }
-
-    /// Render the error as an invocation of [`compile_error!`].
-    ///
-    /// [`compile_error!`]: std::compile_error!
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// # extern crate proc_macro;
-    /// #
-    /// use proc_macro::TokenStream;
-    /// use syn::{parse_macro_input, DeriveInput, Error};
-    ///
-    /// # const _: &str = stringify! {
-    /// #[proc_macro_derive(MyTrait)]
-    /// # };
-    /// pub fn derive_my_trait(input: TokenStream) -> TokenStream {
-    ///     let input = parse_macro_input!(input as DeriveInput);
-    ///     my_trait::expand(input)
-    ///         .unwrap_or_else(Error::into_compile_error)
-    ///         .into()
-    /// }
-    ///
-    /// mod my_trait {
-    ///     use proc_macro2::TokenStream;
-    ///     use syn::{DeriveInput, Result};
-    ///
-    ///     pub(crate) fn expand(input: DeriveInput) -> Result<TokenStream> {
-    ///         /* ... */
-    ///         # unimplemented!()
-    ///     }
-    /// }
-    /// ```
-    pub fn into_compile_error(self) -> TokenStream {
-        self.to_compile_error()
-    }
-
-    /// Add another error message to self such that when `to_compile_error()` is
-    /// called, both errors will be emitted together.
-    pub fn combine(&mut self, another: Error) {
-        self.messages.extend(another.messages);
-    }
-}
-
-impl ErrorMessage {
-    fn to_compile_error(&self) -> TokenStream {
-        let (start, end) = match self.span.get() {
-            Some(range) => (range.start, range.end),
-            None => (Span::call_site(), Span::call_site()),
-        };
-
-        // ::core::compile_error!($message)
-        TokenStream::from_iter(vec![
-            TokenTree::Punct({
-                let mut punct = Punct::new(':', Spacing::Joint);
-                punct.set_span(start);
-                punct
-            }),
-            TokenTree::Punct({
-                let mut punct = Punct::new(':', Spacing::Alone);
-                punct.set_span(start);
-                punct
-            }),
-            TokenTree::Ident(Ident::new("core", start)),
-            TokenTree::Punct({
-                let mut punct = Punct::new(':', Spacing::Joint);
-                punct.set_span(start);
-                punct
-            }),
-            TokenTree::Punct({
-                let mut punct = Punct::new(':', Spacing::Alone);
-                punct.set_span(start);
-                punct
-            }),
-            TokenTree::Ident(Ident::new("compile_error", start)),
-            TokenTree::Punct({
-                let mut punct = Punct::new('!', Spacing::Alone);
-                punct.set_span(start);
-                punct
-            }),
-            TokenTree::Group({
-                let mut group = Group::new(Delimiter::Brace, {
-                    TokenStream::from_iter(vec![TokenTree::Literal({
-                        let mut string = Literal::string(&self.message);
-                        string.set_span(end);
-                        string
-                    })])
-                });
-                group.set_span(end);
-                group
-            }),
-        ])
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) fn new_at<T: Display>(scope: Span, cursor: Cursor, message: T) -> Error {
-    if cursor.eof() {
-        Error::new(scope, format!("unexpected end of input, {}", message))
-    } else {
-        let span = crate::buffer::open_span_of_group(cursor);
-        Error::new(span, message)
-    }
-}
-
-#[cfg(all(feature = "parsing", any(feature = "full", feature = "derive")))]
-pub(crate) fn new2<T: Display>(start: Span, end: Span, message: T) -> Error {
-    return new2(start, end, message.to_string());
-
-    fn new2(start: Span, end: Span, message: String) -> Error {
-        Error {
-            messages: vec![ErrorMessage {
-                span: ThreadBound::new(SpanRange { start, end }),
-                message,
-            }],
-        }
-    }
-}
-
-impl Debug for Error {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        if self.messages.len() == 1 {
-            formatter
-                .debug_tuple("Error")
-                .field(&self.messages[0])
-                .finish()
-        } else {
-            formatter
-                .debug_tuple("Error")
-                .field(&self.messages)
-                .finish()
-        }
-    }
-}
-
-impl Debug for ErrorMessage {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        Debug::fmt(&self.message, formatter)
-    }
-}
-
-impl Display for Error {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str(&self.messages[0].message)
-    }
-}
-
-impl Clone for Error {
-    fn clone(&self) -> Self {
-        Error {
-            messages: self.messages.clone(),
-        }
-    }
-}
-
-impl Clone for ErrorMessage {
-    fn clone(&self) -> Self {
-        ErrorMessage {
-            span: self.span,
-            message: self.message.clone(),
-        }
-    }
-}
-
-impl Clone for SpanRange {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
-
-impl Copy for SpanRange {}
-
-impl std::error::Error for Error {}
-
-impl From<LexError> for Error {
-    fn from(err: LexError) -> Self {
-        Error::new(err.span(), err)
-    }
-}
-
-impl IntoIterator for Error {
-    type Item = Error;
-    type IntoIter = IntoIter;
-
-    fn into_iter(self) -> Self::IntoIter {
-        IntoIter {
-            messages: self.messages.into_iter(),
-        }
-    }
-}
-
-pub struct IntoIter {
-    messages: vec::IntoIter<ErrorMessage>,
-}
-
-impl Iterator for IntoIter {
-    type Item = Error;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        Some(Error {
-            messages: vec![self.messages.next()?],
-        })
-    }
-}
-
-impl<'a> IntoIterator for &'a Error {
-    type Item = Error;
-    type IntoIter = Iter<'a>;
-
-    fn into_iter(self) -> Self::IntoIter {
-        Iter {
-            messages: self.messages.iter(),
-        }
-    }
-}
-
-pub struct Iter<'a> {
-    messages: slice::Iter<'a, ErrorMessage>,
-}
-
-impl<'a> Iterator for Iter<'a> {
-    type Item = Error;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        Some(Error {
-            messages: vec![self.messages.next()?.clone()],
-        })
-    }
-}
-
-impl Extend<Error> for Error {
-    fn extend<T: IntoIterator<Item = Error>>(&mut self, iter: T) {
-        for err in iter {
-            self.combine(err);
-        }
-    }
-}
diff --git a/vendor/syn/src/export.rs b/vendor/syn/src/export.rs
deleted file mode 100644
index b9ea5c7..0000000
--- a/vendor/syn/src/export.rs
+++ /dev/null
@@ -1,73 +0,0 @@
-#[doc(hidden)]
-pub use std::clone::Clone;
-#[doc(hidden)]
-pub use std::cmp::{Eq, PartialEq};
-#[doc(hidden)]
-pub use std::concat;
-#[doc(hidden)]
-pub use std::default::Default;
-#[doc(hidden)]
-pub use std::fmt::Debug;
-#[doc(hidden)]
-pub use std::hash::{Hash, Hasher};
-#[doc(hidden)]
-pub use std::marker::Copy;
-#[doc(hidden)]
-pub use std::option::Option::{None, Some};
-#[doc(hidden)]
-pub use std::result::Result::{Err, Ok};
-#[doc(hidden)]
-pub use std::stringify;
-
-#[doc(hidden)]
-pub type Formatter<'a> = std::fmt::Formatter<'a>;
-#[doc(hidden)]
-pub type FmtResult = std::fmt::Result;
-
-#[doc(hidden)]
-pub type bool = std::primitive::bool;
-#[doc(hidden)]
-pub type str = std::primitive::str;
-
-#[cfg(feature = "printing")]
-#[doc(hidden)]
-pub use quote;
-
-#[doc(hidden)]
-pub type Span = proc_macro2::Span;
-#[doc(hidden)]
-pub type TokenStream2 = proc_macro2::TokenStream;
-
-#[cfg(feature = "parsing")]
-#[doc(hidden)]
-pub use crate::group::{parse_braces, parse_brackets, parse_parens};
-
-#[doc(hidden)]
-pub use crate::span::IntoSpans;
-
-#[cfg(all(feature = "parsing", feature = "printing"))]
-#[doc(hidden)]
-pub use crate::parse_quote::parse as parse_quote;
-
-#[cfg(feature = "parsing")]
-#[doc(hidden)]
-pub use crate::token::parsing::{peek_punct, punct as parse_punct};
-
-#[cfg(feature = "printing")]
-#[doc(hidden)]
-pub use crate::token::printing::punct as print_punct;
-
-#[cfg(feature = "parsing")]
-#[doc(hidden)]
-pub use crate::token::private::CustomToken;
-
-#[cfg(feature = "proc-macro")]
-#[doc(hidden)]
-pub type TokenStream = proc_macro::TokenStream;
-
-#[cfg(feature = "printing")]
-#[doc(hidden)]
-pub use quote::{ToTokens, TokenStreamExt};
-
-#[doc(hidden)]
-pub struct private(pub(crate) ());
diff --git a/vendor/syn/src/expr.rs b/vendor/syn/src/expr.rs
deleted file mode 100644
index 7fb0f7b..0000000
--- a/vendor/syn/src/expr.rs
+++ /dev/null
@@ -1,3506 +0,0 @@
-use super::*;
-use crate::punctuated::Punctuated;
-use proc_macro2::{Span, TokenStream};
-#[cfg(feature = "printing")]
-use quote::IdentFragment;
-#[cfg(feature = "printing")]
-use std::fmt::{self, Display};
-use std::hash::{Hash, Hasher};
-#[cfg(feature = "parsing")]
-use std::mem;
-
-ast_enum_of_structs! {
-    /// A Rust expression.
-    ///
-    /// *This type is available only if Syn is built with the `"derive"` or `"full"`
-    /// feature, but most of the variants are not available unless "full" is enabled.*
-    ///
-    /// # Syntax tree enums
-    ///
-    /// This type is a syntax tree enum. In Syn this and other syntax tree enums
-    /// are designed to be traversed using the following rebinding idiom.
-    ///
-    /// ```
-    /// # use syn::Expr;
-    /// #
-    /// # fn example(expr: Expr) {
-    /// # const IGNORE: &str = stringify! {
-    /// let expr: Expr = /* ... */;
-    /// # };
-    /// match expr {
-    ///     Expr::MethodCall(expr) => {
-    ///         /* ... */
-    ///     }
-    ///     Expr::Cast(expr) => {
-    ///         /* ... */
-    ///     }
-    ///     Expr::If(expr) => {
-    ///         /* ... */
-    ///     }
-    ///
-    ///     /* ... */
-    ///     # _ => {}
-    /// # }
-    /// # }
-    /// ```
-    ///
-    /// We begin with a variable `expr` of type `Expr` that has no fields
-    /// (because it is an enum), and by matching on it and rebinding a variable
-    /// with the same name `expr` we effectively imbue our variable with all of
-    /// the data fields provided by the variant that it turned out to be. So for
-    /// example above if we ended up in the `MethodCall` case then we get to use
-    /// `expr.receiver`, `expr.args` etc; if we ended up in the `If` case we get
-    /// to use `expr.cond`, `expr.then_branch`, `expr.else_branch`.
-    ///
-    /// This approach avoids repeating the variant names twice on every line.
-    ///
-    /// ```
-    /// # use syn::{Expr, ExprMethodCall};
-    /// #
-    /// # fn example(expr: Expr) {
-    /// // Repetitive; recommend not doing this.
-    /// match expr {
-    ///     Expr::MethodCall(ExprMethodCall { method, args, .. }) => {
-    /// # }
-    /// # _ => {}
-    /// # }
-    /// # }
-    /// ```
-    ///
-    /// In general, the name to which a syntax tree enum variant is bound should
-    /// be a suitable name for the complete syntax tree enum type.
-    ///
-    /// ```
-    /// # use syn::{Expr, ExprField};
-    /// #
-    /// # fn example(discriminant: ExprField) {
-    /// // Binding is called `base` which is the name I would use if I were
-    /// // assigning `*discriminant.base` without an `if let`.
-    /// if let Expr::Tuple(base) = *discriminant.base {
-    /// # }
-    /// # }
-    /// ```
-    ///
-    /// A sign that you may not be choosing the right variable names is if you
-    /// see names getting repeated in your code, like accessing
-    /// `receiver.receiver` or `pat.pat` or `cond.cond`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    #[non_exhaustive]
-    pub enum Expr {
-        /// A slice literal expression: `[a, b, c, d]`.
-        Array(ExprArray),
-
-        /// An assignment expression: `a = compute()`.
-        Assign(ExprAssign),
-
-        /// An async block: `async { ... }`.
-        Async(ExprAsync),
-
-        /// An await expression: `fut.await`.
-        Await(ExprAwait),
-
-        /// A binary operation: `a + b`, `a += b`.
-        Binary(ExprBinary),
-
-        /// A blocked scope: `{ ... }`.
-        Block(ExprBlock),
-
-        /// A `break`, with an optional label to break and an optional
-        /// expression.
-        Break(ExprBreak),
-
-        /// A function call expression: `invoke(a, b)`.
-        Call(ExprCall),
-
-        /// A cast expression: `foo as f64`.
-        Cast(ExprCast),
-
-        /// A closure expression: `|a, b| a + b`.
-        Closure(ExprClosure),
-
-        /// A const block: `const { ... }`.
-        Const(ExprConst),
-
-        /// A `continue`, with an optional label.
-        Continue(ExprContinue),
-
-        /// Access of a named struct field (`obj.k`) or unnamed tuple struct
-        /// field (`obj.0`).
-        Field(ExprField),
-
-        /// A for loop: `for pat in expr { ... }`.
-        ForLoop(ExprForLoop),
-
-        /// An expression contained within invisible delimiters.
-        ///
-        /// This variant is important for faithfully representing the precedence
-        /// of expressions and is related to `None`-delimited spans in a
-        /// `TokenStream`.
-        Group(ExprGroup),
-
-        /// An `if` expression with an optional `else` block: `if expr { ... }
-        /// else { ... }`.
-        ///
-        /// The `else` branch expression may only be an `If` or `Block`
-        /// expression, not any of the other types of expression.
-        If(ExprIf),
-
-        /// A square bracketed indexing expression: `vector[2]`.
-        Index(ExprIndex),
-
-        /// The inferred value of a const generic argument, denoted `_`.
-        Infer(ExprInfer),
-
-        /// A `let` guard: `let Some(x) = opt`.
-        Let(ExprLet),
-
-        /// A literal in place of an expression: `1`, `"foo"`.
-        Lit(ExprLit),
-
-        /// Conditionless loop: `loop { ... }`.
-        Loop(ExprLoop),
-
-        /// A macro invocation expression: `format!("{}", q)`.
-        Macro(ExprMacro),
-
-        /// A `match` expression: `match n { Some(n) => {}, None => {} }`.
-        Match(ExprMatch),
-
-        /// A method call expression: `x.foo::<T>(a, b)`.
-        MethodCall(ExprMethodCall),
-
-        /// A parenthesized expression: `(a + b)`.
-        Paren(ExprParen),
-
-        /// A path like `std::mem::replace` possibly containing generic
-        /// parameters and a qualified self-type.
-        ///
-        /// A plain identifier like `x` is a path of length 1.
-        Path(ExprPath),
-
-        /// A range expression: `1..2`, `1..`, `..2`, `1..=2`, `..=2`.
-        Range(ExprRange),
-
-        /// A referencing operation: `&a` or `&mut a`.
-        Reference(ExprReference),
-
-        /// An array literal constructed from one repeated element: `[0u8; N]`.
-        Repeat(ExprRepeat),
-
-        /// A `return`, with an optional value to be returned.
-        Return(ExprReturn),
-
-        /// A struct literal expression: `Point { x: 1, y: 1 }`.
-        ///
-        /// The `rest` provides the value of the remaining fields as in `S { a:
-        /// 1, b: 1, ..rest }`.
-        Struct(ExprStruct),
-
-        /// A try-expression: `expr?`.
-        Try(ExprTry),
-
-        /// A try block: `try { ... }`.
-        TryBlock(ExprTryBlock),
-
-        /// A tuple expression: `(a, b, c, d)`.
-        Tuple(ExprTuple),
-
-        /// A unary operation: `!x`, `*x`.
-        Unary(ExprUnary),
-
-        /// An unsafe block: `unsafe { ... }`.
-        Unsafe(ExprUnsafe),
-
-        /// Tokens in expression position not interpreted by Syn.
-        Verbatim(TokenStream),
-
-        /// A while loop: `while expr { ... }`.
-        While(ExprWhile),
-
-        /// A yield expression: `yield expr`.
-        Yield(ExprYield),
-
-        // For testing exhaustiveness in downstream code, use the following idiom:
-        //
-        //     match expr {
-        //         #![cfg_attr(test, deny(non_exhaustive_omitted_patterns))]
-        //
-        //         Expr::Array(expr) => {...}
-        //         Expr::Assign(expr) => {...}
-        //         ...
-        //         Expr::Yield(expr) => {...}
-        //
-        //         _ => { /* some sane fallback */ }
-        //     }
-        //
-        // This way we fail your tests but don't break your library when adding
-        // a variant. You will be notified by a test failure when a variant is
-        // added, so that you can add code to handle it, but your library will
-        // continue to compile and work for downstream users in the interim.
-    }
-}
-
-ast_struct! {
-    /// A slice literal expression: `[a, b, c, d]`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprArray #full {
-        pub attrs: Vec<Attribute>,
-        pub bracket_token: token::Bracket,
-        pub elems: Punctuated<Expr, Token![,]>,
-    }
-}
-
-ast_struct! {
-    /// An assignment expression: `a = compute()`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprAssign #full {
-        pub attrs: Vec<Attribute>,
-        pub left: Box<Expr>,
-        pub eq_token: Token![=],
-        pub right: Box<Expr>,
-    }
-}
-
-ast_struct! {
-    /// An async block: `async { ... }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprAsync #full {
-        pub attrs: Vec<Attribute>,
-        pub async_token: Token![async],
-        pub capture: Option<Token![move]>,
-        pub block: Block,
-    }
-}
-
-ast_struct! {
-    /// An await expression: `fut.await`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprAwait #full {
-        pub attrs: Vec<Attribute>,
-        pub base: Box<Expr>,
-        pub dot_token: Token![.],
-        pub await_token: Token![await],
-    }
-}
-
-ast_struct! {
-    /// A binary operation: `a + b`, `a += b`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct ExprBinary {
-        pub attrs: Vec<Attribute>,
-        pub left: Box<Expr>,
-        pub op: BinOp,
-        pub right: Box<Expr>,
-    }
-}
-
-ast_struct! {
-    /// A blocked scope: `{ ... }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprBlock #full {
-        pub attrs: Vec<Attribute>,
-        pub label: Option<Label>,
-        pub block: Block,
-    }
-}
-
-ast_struct! {
-    /// A `break`, with an optional label to break and an optional
-    /// expression.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprBreak #full {
-        pub attrs: Vec<Attribute>,
-        pub break_token: Token![break],
-        pub label: Option<Lifetime>,
-        pub expr: Option<Box<Expr>>,
-    }
-}
-
-ast_struct! {
-    /// A function call expression: `invoke(a, b)`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct ExprCall {
-        pub attrs: Vec<Attribute>,
-        pub func: Box<Expr>,
-        pub paren_token: token::Paren,
-        pub args: Punctuated<Expr, Token![,]>,
-    }
-}
-
-ast_struct! {
-    /// A cast expression: `foo as f64`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct ExprCast {
-        pub attrs: Vec<Attribute>,
-        pub expr: Box<Expr>,
-        pub as_token: Token![as],
-        pub ty: Box<Type>,
-    }
-}
-
-ast_struct! {
-    /// A closure expression: `|a, b| a + b`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprClosure #full {
-        pub attrs: Vec<Attribute>,
-        pub lifetimes: Option<BoundLifetimes>,
-        pub constness: Option<Token![const]>,
-        pub movability: Option<Token![static]>,
-        pub asyncness: Option<Token![async]>,
-        pub capture: Option<Token![move]>,
-        pub or1_token: Token![|],
-        pub inputs: Punctuated<Pat, Token![,]>,
-        pub or2_token: Token![|],
-        pub output: ReturnType,
-        pub body: Box<Expr>,
-    }
-}
-
-ast_struct! {
-    /// A const block: `const { ... }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprConst #full {
-        pub attrs: Vec<Attribute>,
-        pub const_token: Token![const],
-        pub block: Block,
-    }
-}
-
-ast_struct! {
-    /// A `continue`, with an optional label.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprContinue #full {
-        pub attrs: Vec<Attribute>,
-        pub continue_token: Token![continue],
-        pub label: Option<Lifetime>,
-    }
-}
-
-ast_struct! {
-    /// Access of a named struct field (`obj.k`) or unnamed tuple struct
-    /// field (`obj.0`).
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct ExprField {
-        pub attrs: Vec<Attribute>,
-        pub base: Box<Expr>,
-        pub dot_token: Token![.],
-        pub member: Member,
-    }
-}
-
-ast_struct! {
-    /// A for loop: `for pat in expr { ... }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprForLoop #full {
-        pub attrs: Vec<Attribute>,
-        pub label: Option<Label>,
-        pub for_token: Token![for],
-        pub pat: Box<Pat>,
-        pub in_token: Token![in],
-        pub expr: Box<Expr>,
-        pub body: Block,
-    }
-}
-
-ast_struct! {
-    /// An expression contained within invisible delimiters.
-    ///
-    /// This variant is important for faithfully representing the precedence
-    /// of expressions and is related to `None`-delimited spans in a
-    /// `TokenStream`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprGroup {
-        pub attrs: Vec<Attribute>,
-        pub group_token: token::Group,
-        pub expr: Box<Expr>,
-    }
-}
-
-ast_struct! {
-    /// An `if` expression with an optional `else` block: `if expr { ... }
-    /// else { ... }`.
-    ///
-    /// The `else` branch expression may only be an `If` or `Block`
-    /// expression, not any of the other types of expression.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprIf #full {
-        pub attrs: Vec<Attribute>,
-        pub if_token: Token![if],
-        pub cond: Box<Expr>,
-        pub then_branch: Block,
-        pub else_branch: Option<(Token![else], Box<Expr>)>,
-    }
-}
-
-ast_struct! {
-    /// A square bracketed indexing expression: `vector[2]`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct ExprIndex {
-        pub attrs: Vec<Attribute>,
-        pub expr: Box<Expr>,
-        pub bracket_token: token::Bracket,
-        pub index: Box<Expr>,
-    }
-}
-
-ast_struct! {
-    /// The inferred value of a const generic argument, denoted `_`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprInfer #full {
-        pub attrs: Vec<Attribute>,
-        pub underscore_token: Token![_],
-    }
-}
-
-ast_struct! {
-    /// A `let` guard: `let Some(x) = opt`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprLet #full {
-        pub attrs: Vec<Attribute>,
-        pub let_token: Token![let],
-        pub pat: Box<Pat>,
-        pub eq_token: Token![=],
-        pub expr: Box<Expr>,
-    }
-}
-
-ast_struct! {
-    /// A literal in place of an expression: `1`, `"foo"`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct ExprLit {
-        pub attrs: Vec<Attribute>,
-        pub lit: Lit,
-    }
-}
-
-ast_struct! {
-    /// Conditionless loop: `loop { ... }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprLoop #full {
-        pub attrs: Vec<Attribute>,
-        pub label: Option<Label>,
-        pub loop_token: Token![loop],
-        pub body: Block,
-    }
-}
-
-ast_struct! {
-    /// A macro invocation expression: `format!("{}", q)`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct ExprMacro {
-        pub attrs: Vec<Attribute>,
-        pub mac: Macro,
-    }
-}
-
-ast_struct! {
-    /// A `match` expression: `match n { Some(n) => {}, None => {} }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprMatch #full {
-        pub attrs: Vec<Attribute>,
-        pub match_token: Token![match],
-        pub expr: Box<Expr>,
-        pub brace_token: token::Brace,
-        pub arms: Vec<Arm>,
-    }
-}
-
-ast_struct! {
-    /// A method call expression: `x.foo::<T>(a, b)`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct ExprMethodCall {
-        pub attrs: Vec<Attribute>,
-        pub receiver: Box<Expr>,
-        pub dot_token: Token![.],
-        pub method: Ident,
-        pub turbofish: Option<AngleBracketedGenericArguments>,
-        pub paren_token: token::Paren,
-        pub args: Punctuated<Expr, Token![,]>,
-    }
-}
-
-ast_struct! {
-    /// A parenthesized expression: `(a + b)`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct ExprParen {
-        pub attrs: Vec<Attribute>,
-        pub paren_token: token::Paren,
-        pub expr: Box<Expr>,
-    }
-}
-
-ast_struct! {
-    /// A path like `std::mem::replace` possibly containing generic
-    /// parameters and a qualified self-type.
-    ///
-    /// A plain identifier like `x` is a path of length 1.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct ExprPath {
-        pub attrs: Vec<Attribute>,
-        pub qself: Option<QSelf>,
-        pub path: Path,
-    }
-}
-
-ast_struct! {
-    /// A range expression: `1..2`, `1..`, `..2`, `1..=2`, `..=2`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprRange #full {
-        pub attrs: Vec<Attribute>,
-        pub start: Option<Box<Expr>>,
-        pub limits: RangeLimits,
-        pub end: Option<Box<Expr>>,
-    }
-}
-
-ast_struct! {
-    /// A referencing operation: `&a` or `&mut a`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct ExprReference {
-        pub attrs: Vec<Attribute>,
-        pub and_token: Token![&],
-        pub mutability: Option<Token![mut]>,
-        pub expr: Box<Expr>,
-    }
-}
-
-ast_struct! {
-    /// An array literal constructed from one repeated element: `[0u8; N]`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprRepeat #full {
-        pub attrs: Vec<Attribute>,
-        pub bracket_token: token::Bracket,
-        pub expr: Box<Expr>,
-        pub semi_token: Token![;],
-        pub len: Box<Expr>,
-    }
-}
-
-ast_struct! {
-    /// A `return`, with an optional value to be returned.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprReturn #full {
-        pub attrs: Vec<Attribute>,
-        pub return_token: Token![return],
-        pub expr: Option<Box<Expr>>,
-    }
-}
-
-ast_struct! {
-    /// A struct literal expression: `Point { x: 1, y: 1 }`.
-    ///
-    /// The `rest` provides the value of the remaining fields as in `S { a:
-    /// 1, b: 1, ..rest }`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct ExprStruct {
-        pub attrs: Vec<Attribute>,
-        pub qself: Option<QSelf>,
-        pub path: Path,
-        pub brace_token: token::Brace,
-        pub fields: Punctuated<FieldValue, Token![,]>,
-        pub dot2_token: Option<Token![..]>,
-        pub rest: Option<Box<Expr>>,
-    }
-}
-
-ast_struct! {
-    /// A try-expression: `expr?`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprTry #full {
-        pub attrs: Vec<Attribute>,
-        pub expr: Box<Expr>,
-        pub question_token: Token![?],
-    }
-}
-
-ast_struct! {
-    /// A try block: `try { ... }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprTryBlock #full {
-        pub attrs: Vec<Attribute>,
-        pub try_token: Token![try],
-        pub block: Block,
-    }
-}
-
-ast_struct! {
-    /// A tuple expression: `(a, b, c, d)`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprTuple #full {
-        pub attrs: Vec<Attribute>,
-        pub paren_token: token::Paren,
-        pub elems: Punctuated<Expr, Token![,]>,
-    }
-}
-
-ast_struct! {
-    /// A unary operation: `!x`, `*x`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct ExprUnary {
-        pub attrs: Vec<Attribute>,
-        pub op: UnOp,
-        pub expr: Box<Expr>,
-    }
-}
-
-ast_struct! {
-    /// An unsafe block: `unsafe { ... }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprUnsafe #full {
-        pub attrs: Vec<Attribute>,
-        pub unsafe_token: Token![unsafe],
-        pub block: Block,
-    }
-}
-
-ast_struct! {
-    /// A while loop: `while expr { ... }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprWhile #full {
-        pub attrs: Vec<Attribute>,
-        pub label: Option<Label>,
-        pub while_token: Token![while],
-        pub cond: Box<Expr>,
-        pub body: Block,
-    }
-}
-
-ast_struct! {
-    /// A yield expression: `yield expr`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ExprYield #full {
-        pub attrs: Vec<Attribute>,
-        pub yield_token: Token![yield],
-        pub expr: Option<Box<Expr>>,
-    }
-}
-
-impl Expr {
-    #[cfg(feature = "parsing")]
-    const DUMMY: Self = Expr::Path(ExprPath {
-        attrs: Vec::new(),
-        qself: None,
-        path: Path {
-            leading_colon: None,
-            segments: Punctuated::new(),
-        },
-    });
-
-    #[cfg(all(feature = "parsing", feature = "full"))]
-    pub(crate) fn replace_attrs(&mut self, new: Vec<Attribute>) -> Vec<Attribute> {
-        match self {
-            Expr::Array(ExprArray { attrs, .. })
-            | Expr::Assign(ExprAssign { attrs, .. })
-            | Expr::Async(ExprAsync { attrs, .. })
-            | Expr::Await(ExprAwait { attrs, .. })
-            | Expr::Binary(ExprBinary { attrs, .. })
-            | Expr::Block(ExprBlock { attrs, .. })
-            | Expr::Break(ExprBreak { attrs, .. })
-            | Expr::Call(ExprCall { attrs, .. })
-            | Expr::Cast(ExprCast { attrs, .. })
-            | Expr::Closure(ExprClosure { attrs, .. })
-            | Expr::Const(ExprConst { attrs, .. })
-            | Expr::Continue(ExprContinue { attrs, .. })
-            | Expr::Field(ExprField { attrs, .. })
-            | Expr::ForLoop(ExprForLoop { attrs, .. })
-            | Expr::Group(ExprGroup { attrs, .. })
-            | Expr::If(ExprIf { attrs, .. })
-            | Expr::Index(ExprIndex { attrs, .. })
-            | Expr::Infer(ExprInfer { attrs, .. })
-            | Expr::Let(ExprLet { attrs, .. })
-            | Expr::Lit(ExprLit { attrs, .. })
-            | Expr::Loop(ExprLoop { attrs, .. })
-            | Expr::Macro(ExprMacro { attrs, .. })
-            | Expr::Match(ExprMatch { attrs, .. })
-            | Expr::MethodCall(ExprMethodCall { attrs, .. })
-            | Expr::Paren(ExprParen { attrs, .. })
-            | Expr::Path(ExprPath { attrs, .. })
-            | Expr::Range(ExprRange { attrs, .. })
-            | Expr::Reference(ExprReference { attrs, .. })
-            | Expr::Repeat(ExprRepeat { attrs, .. })
-            | Expr::Return(ExprReturn { attrs, .. })
-            | Expr::Struct(ExprStruct { attrs, .. })
-            | Expr::Try(ExprTry { attrs, .. })
-            | Expr::TryBlock(ExprTryBlock { attrs, .. })
-            | Expr::Tuple(ExprTuple { attrs, .. })
-            | Expr::Unary(ExprUnary { attrs, .. })
-            | Expr::Unsafe(ExprUnsafe { attrs, .. })
-            | Expr::While(ExprWhile { attrs, .. })
-            | Expr::Yield(ExprYield { attrs, .. }) => mem::replace(attrs, new),
-            Expr::Verbatim(_) => Vec::new(),
-        }
-    }
-}
-
-ast_enum! {
-    /// A struct or tuple struct field accessed in a struct literal or field
-    /// expression.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub enum Member {
-        /// A named field like `self.x`.
-        Named(Ident),
-        /// An unnamed field like `self.0`.
-        Unnamed(Index),
-    }
-}
-
-impl From<Ident> for Member {
-    fn from(ident: Ident) -> Member {
-        Member::Named(ident)
-    }
-}
-
-impl From<Index> for Member {
-    fn from(index: Index) -> Member {
-        Member::Unnamed(index)
-    }
-}
-
-impl From<usize> for Member {
-    fn from(index: usize) -> Member {
-        Member::Unnamed(Index::from(index))
-    }
-}
-
-impl Eq for Member {}
-
-impl PartialEq for Member {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (Member::Named(this), Member::Named(other)) => this == other,
-            (Member::Unnamed(this), Member::Unnamed(other)) => this == other,
-            _ => false,
-        }
-    }
-}
-
-impl Hash for Member {
-    fn hash<H: Hasher>(&self, state: &mut H) {
-        match self {
-            Member::Named(m) => m.hash(state),
-            Member::Unnamed(m) => m.hash(state),
-        }
-    }
-}
-
-#[cfg(feature = "printing")]
-impl IdentFragment for Member {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        match self {
-            Member::Named(m) => Display::fmt(m, formatter),
-            Member::Unnamed(m) => Display::fmt(&m.index, formatter),
-        }
-    }
-
-    fn span(&self) -> Option<Span> {
-        match self {
-            Member::Named(m) => Some(m.span()),
-            Member::Unnamed(m) => Some(m.span),
-        }
-    }
-}
-
-ast_struct! {
-    /// The index of an unnamed tuple struct field.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct Index {
-        pub index: u32,
-        pub span: Span,
-    }
-}
-
-impl From<usize> for Index {
-    fn from(index: usize) -> Index {
-        assert!(index < u32::max_value() as usize);
-        Index {
-            index: index as u32,
-            span: Span::call_site(),
-        }
-    }
-}
-
-impl Eq for Index {}
-
-impl PartialEq for Index {
-    fn eq(&self, other: &Self) -> bool {
-        self.index == other.index
-    }
-}
-
-impl Hash for Index {
-    fn hash<H: Hasher>(&self, state: &mut H) {
-        self.index.hash(state);
-    }
-}
-
-#[cfg(feature = "printing")]
-impl IdentFragment for Index {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        Display::fmt(&self.index, formatter)
-    }
-
-    fn span(&self) -> Option<Span> {
-        Some(self.span)
-    }
-}
-
-ast_struct! {
-    /// A field-value pair in a struct literal.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct FieldValue {
-        pub attrs: Vec<Attribute>,
-        pub member: Member,
-
-        /// The colon in `Struct { x: x }`. If written in shorthand like
-        /// `Struct { x }`, there is no colon.
-        pub colon_token: Option<Token![:]>,
-
-        pub expr: Expr,
-    }
-}
-
-#[cfg(feature = "full")]
-ast_struct! {
-    /// A lifetime labeling a `for`, `while`, or `loop`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct Label {
-        pub name: Lifetime,
-        pub colon_token: Token![:],
-    }
-}
-
-#[cfg(feature = "full")]
-ast_struct! {
-    /// One arm of a `match` expression: `0..=10 => { return true; }`.
-    ///
-    /// As in:
-    ///
-    /// ```
-    /// # fn f() -> bool {
-    /// #     let n = 0;
-    /// match n {
-    ///     0..=10 => {
-    ///         return true;
-    ///     }
-    ///     // ...
-    ///     # _ => {}
-    /// }
-    /// #   false
-    /// # }
-    /// ```
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct Arm {
-        pub attrs: Vec<Attribute>,
-        pub pat: Pat,
-        pub guard: Option<(Token![if], Box<Expr>)>,
-        pub fat_arrow_token: Token![=>],
-        pub body: Box<Expr>,
-        pub comma: Option<Token![,]>,
-    }
-}
-
-#[cfg(feature = "full")]
-ast_enum! {
-    /// Limit types of a range, inclusive or exclusive.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub enum RangeLimits {
-        /// Inclusive at the beginning, exclusive at the end.
-        HalfOpen(Token![..]),
-        /// Inclusive at the beginning and end.
-        Closed(Token![..=]),
-    }
-}
-
-#[cfg(any(feature = "parsing", feature = "printing"))]
-#[cfg(feature = "full")]
-pub(crate) fn requires_terminator(expr: &Expr) -> bool {
-    // see https://github.com/rust-lang/rust/blob/9a19e7604/compiler/rustc_ast/src/util/classify.rs#L7-L26
-    match expr {
-        Expr::If(_)
-        | Expr::Match(_)
-        | Expr::Block(_) | Expr::Unsafe(_) // both under ExprKind::Block in rustc
-        | Expr::While(_)
-        | Expr::Loop(_)
-        | Expr::ForLoop(_)
-        | Expr::TryBlock(_)
-        | Expr::Const(_) => false,
-        Expr::Array(_)
-        | Expr::Assign(_)
-        | Expr::Async(_)
-        | Expr::Await(_)
-        | Expr::Binary(_)
-        | Expr::Break(_)
-        | Expr::Call(_)
-        | Expr::Cast(_)
-        | Expr::Closure(_)
-        | Expr::Continue(_)
-        | Expr::Field(_)
-        | Expr::Group(_)
-        | Expr::Index(_)
-        | Expr::Infer(_)
-        | Expr::Let(_)
-        | Expr::Lit(_)
-        | Expr::Macro(_)
-        | Expr::MethodCall(_)
-        | Expr::Paren(_)
-        | Expr::Path(_)
-        | Expr::Range(_)
-        | Expr::Reference(_)
-        | Expr::Repeat(_)
-        | Expr::Return(_)
-        | Expr::Struct(_)
-        | Expr::Try(_)
-        | Expr::Tuple(_)
-        | Expr::Unary(_)
-        | Expr::Yield(_)
-        | Expr::Verbatim(_) => true
-    }
-}
-
-#[cfg(feature = "parsing")]
-mod precedence {
-    use super::BinOp;
-
-    pub(crate) enum Precedence {
-        Any,
-        Assign,
-        Range,
-        Or,
-        And,
-        Compare,
-        BitOr,
-        BitXor,
-        BitAnd,
-        Shift,
-        Arithmetic,
-        Term,
-        Cast,
-    }
-
-    impl Precedence {
-        pub(crate) fn of(op: &BinOp) -> Self {
-            match op {
-                BinOp::Add(_) | BinOp::Sub(_) => Precedence::Arithmetic,
-                BinOp::Mul(_) | BinOp::Div(_) | BinOp::Rem(_) => Precedence::Term,
-                BinOp::And(_) => Precedence::And,
-                BinOp::Or(_) => Precedence::Or,
-                BinOp::BitXor(_) => Precedence::BitXor,
-                BinOp::BitAnd(_) => Precedence::BitAnd,
-                BinOp::BitOr(_) => Precedence::BitOr,
-                BinOp::Shl(_) | BinOp::Shr(_) => Precedence::Shift,
-                BinOp::Eq(_)
-                | BinOp::Lt(_)
-                | BinOp::Le(_)
-                | BinOp::Ne(_)
-                | BinOp::Ge(_)
-                | BinOp::Gt(_) => Precedence::Compare,
-                BinOp::AddAssign(_)
-                | BinOp::SubAssign(_)
-                | BinOp::MulAssign(_)
-                | BinOp::DivAssign(_)
-                | BinOp::RemAssign(_)
-                | BinOp::BitXorAssign(_)
-                | BinOp::BitAndAssign(_)
-                | BinOp::BitOrAssign(_)
-                | BinOp::ShlAssign(_)
-                | BinOp::ShrAssign(_) => Precedence::Assign,
-            }
-        }
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::precedence::Precedence;
-    use super::*;
-    #[cfg(feature = "full")]
-    use crate::ext::IdentExt as _;
-    use crate::parse::discouraged::Speculative as _;
-    #[cfg(feature = "full")]
-    use crate::parse::ParseBuffer;
-    use crate::parse::{Parse, ParseStream, Result};
-    use crate::path;
-    use std::cmp::Ordering;
-
-    mod kw {
-        crate::custom_keyword!(builtin);
-        crate::custom_keyword!(raw);
-    }
-
-    // When we're parsing expressions which occur before blocks, like in an if
-    // statement's condition, we cannot parse a struct literal.
-    //
-    // Struct literals are ambiguous in certain positions
-    // https://github.com/rust-lang/rfcs/pull/92
-    #[cfg(feature = "full")]
-    pub(crate) struct AllowStruct(bool);
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Expr {
-        fn parse(input: ParseStream) -> Result<Self> {
-            ambiguous_expr(
-                input,
-                #[cfg(feature = "full")]
-                AllowStruct(true),
-            )
-        }
-    }
-
-    impl Expr {
-        /// An alternative to the primary `Expr::parse` parser (from the
-        /// [`Parse`] trait) for ambiguous syntactic positions in which a
-        /// trailing brace should not be taken as part of the expression.
-        ///
-        /// Rust grammar has an ambiguity where braces sometimes turn a path
-        /// expression into a struct initialization and sometimes do not. In the
-        /// following code, the expression `S {}` is one expression. Presumably
-        /// there is an empty struct `struct S {}` defined somewhere which it is
-        /// instantiating.
-        ///
-        /// ```
-        /// # struct S;
-        /// # impl std::ops::Deref for S {
-        /// #     type Target = bool;
-        /// #     fn deref(&self) -> &Self::Target {
-        /// #         &true
-        /// #     }
-        /// # }
-        /// let _ = *S {};
-        ///
-        /// // parsed by rustc as: `*(S {})`
-        /// ```
-        ///
-        /// We would want to parse the above using `Expr::parse` after the `=`
-        /// token.
-        ///
-        /// But in the following, `S {}` is *not* a struct init expression.
-        ///
-        /// ```
-        /// # const S: &bool = &true;
-        /// if *S {} {}
-        ///
-        /// // parsed by rustc as:
-        /// //
-        /// //    if (*S) {
-        /// //        /* empty block */
-        /// //    }
-        /// //    {
-        /// //        /* another empty block */
-        /// //    }
-        /// ```
-        ///
-        /// For that reason we would want to parse if-conditions using
-        /// `Expr::parse_without_eager_brace` after the `if` token. Same for
-        /// similar syntactic positions such as the condition expr after a
-        /// `while` token or the expr at the top of a `match`.
-        ///
-        /// The Rust grammar's choices around which way this ambiguity is
-        /// resolved at various syntactic positions is fairly arbitrary. Really
-        /// either parse behavior could work in most positions, and language
-        /// designers just decide each case based on which is more likely to be
-        /// what the programmer had in mind most of the time.
-        ///
-        /// ```
-        /// # struct S;
-        /// # fn doc() -> S {
-        /// if return S {} {}
-        /// # unreachable!()
-        /// # }
-        ///
-        /// // parsed by rustc as:
-        /// //
-        /// //    if (return (S {})) {
-        /// //    }
-        /// //
-        /// // but could equally well have been this other arbitrary choice:
-        /// //
-        /// //    if (return S) {
-        /// //    }
-        /// //    {}
-        /// ```
-        ///
-        /// Note the grammar ambiguity on trailing braces is distinct from
-        /// precedence and is not captured by assigning a precedence level to
-        /// the braced struct init expr in relation to other operators. This can
-        /// be illustrated by `return 0..S {}` vs `match 0..S {}`. The former
-        /// parses as `return (0..(S {}))` implying tighter precedence for
-        /// struct init than `..`, while the latter parses as `match (0..S) {}`
-        /// implying tighter precedence for `..` than struct init, a
-        /// contradiction.
-        #[cfg(feature = "full")]
-        #[cfg_attr(doc_cfg, doc(cfg(all(feature = "full", feature = "parsing"))))]
-        pub fn parse_without_eager_brace(input: ParseStream) -> Result<Expr> {
-            ambiguous_expr(input, AllowStruct(false))
-        }
-    }
-
-    #[cfg(feature = "full")]
-    impl Copy for AllowStruct {}
-
-    #[cfg(feature = "full")]
-    impl Clone for AllowStruct {
-        fn clone(&self) -> Self {
-            *self
-        }
-    }
-
-    impl Copy for Precedence {}
-
-    impl Clone for Precedence {
-        fn clone(&self) -> Self {
-            *self
-        }
-    }
-
-    impl PartialEq for Precedence {
-        fn eq(&self, other: &Self) -> bool {
-            *self as u8 == *other as u8
-        }
-    }
-
-    impl PartialOrd for Precedence {
-        fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
-            let this = *self as u8;
-            let other = *other as u8;
-            Some(this.cmp(&other))
-        }
-    }
-
-    #[cfg(feature = "full")]
-    fn can_begin_expr(input: ParseStream) -> bool {
-        input.peek(Ident::peek_any) // value name or keyword
-            || input.peek(token::Paren) // tuple
-            || input.peek(token::Bracket) // array
-            || input.peek(token::Brace) // block
-            || input.peek(Lit) // literal
-            || input.peek(Token![!]) && !input.peek(Token![!=]) // operator not
-            || input.peek(Token![-]) && !input.peek(Token![-=]) && !input.peek(Token![->]) // unary minus
-            || input.peek(Token![*]) && !input.peek(Token![*=]) // dereference
-            || input.peek(Token![|]) && !input.peek(Token![|=]) // closure
-            || input.peek(Token![&]) && !input.peek(Token![&=]) // reference
-            || input.peek(Token![..]) // range notation
-            || input.peek(Token![<]) && !input.peek(Token![<=]) && !input.peek(Token![<<=]) // associated path
-            || input.peek(Token![::]) // global path
-            || input.peek(Lifetime) // labeled loop
-            || input.peek(Token![#]) // expression attributes
-    }
-
-    #[cfg(feature = "full")]
-    fn parse_expr(
-        input: ParseStream,
-        mut lhs: Expr,
-        allow_struct: AllowStruct,
-        base: Precedence,
-    ) -> Result<Expr> {
-        loop {
-            let ahead = input.fork();
-            if let Some(op) = match ahead.parse::<BinOp>() {
-                Ok(op) if Precedence::of(&op) >= base => Some(op),
-                _ => None,
-            } {
-                input.advance_to(&ahead);
-                let precedence = Precedence::of(&op);
-                let mut rhs = unary_expr(input, allow_struct)?;
-                loop {
-                    let next = peek_precedence(input);
-                    if next > precedence || next == precedence && precedence == Precedence::Assign {
-                        rhs = parse_expr(input, rhs, allow_struct, next)?;
-                    } else {
-                        break;
-                    }
-                }
-                lhs = Expr::Binary(ExprBinary {
-                    attrs: Vec::new(),
-                    left: Box::new(lhs),
-                    op,
-                    right: Box::new(rhs),
-                });
-            } else if Precedence::Assign >= base
-                && input.peek(Token![=])
-                && !input.peek(Token![==])
-                && !input.peek(Token![=>])
-            {
-                let eq_token: Token![=] = input.parse()?;
-                let mut rhs = unary_expr(input, allow_struct)?;
-                loop {
-                    let next = peek_precedence(input);
-                    if next >= Precedence::Assign {
-                        rhs = parse_expr(input, rhs, allow_struct, next)?;
-                    } else {
-                        break;
-                    }
-                }
-                lhs = Expr::Assign(ExprAssign {
-                    attrs: Vec::new(),
-                    left: Box::new(lhs),
-                    eq_token,
-                    right: Box::new(rhs),
-                });
-            } else if Precedence::Range >= base && input.peek(Token![..]) {
-                let limits: RangeLimits = input.parse()?;
-                let rhs = if matches!(limits, RangeLimits::HalfOpen(_))
-                    && (input.is_empty()
-                        || input.peek(Token![,])
-                        || input.peek(Token![;])
-                        || input.peek(Token![.]) && !input.peek(Token![..])
-                        || !allow_struct.0 && input.peek(token::Brace))
-                {
-                    None
-                } else {
-                    let mut rhs = unary_expr(input, allow_struct)?;
-                    loop {
-                        let next = peek_precedence(input);
-                        if next > Precedence::Range {
-                            rhs = parse_expr(input, rhs, allow_struct, next)?;
-                        } else {
-                            break;
-                        }
-                    }
-                    Some(rhs)
-                };
-                lhs = Expr::Range(ExprRange {
-                    attrs: Vec::new(),
-                    start: Some(Box::new(lhs)),
-                    limits,
-                    end: rhs.map(Box::new),
-                });
-            } else if Precedence::Cast >= base && input.peek(Token![as]) {
-                let as_token: Token![as] = input.parse()?;
-                let allow_plus = false;
-                let allow_group_generic = false;
-                let ty = ty::parsing::ambig_ty(input, allow_plus, allow_group_generic)?;
-                check_cast(input)?;
-                lhs = Expr::Cast(ExprCast {
-                    attrs: Vec::new(),
-                    expr: Box::new(lhs),
-                    as_token,
-                    ty: Box::new(ty),
-                });
-            } else {
-                break;
-            }
-        }
-        Ok(lhs)
-    }
-
-    #[cfg(not(feature = "full"))]
-    fn parse_expr(input: ParseStream, mut lhs: Expr, base: Precedence) -> Result<Expr> {
-        loop {
-            let ahead = input.fork();
-            if let Some(op) = match ahead.parse::<BinOp>() {
-                Ok(op) if Precedence::of(&op) >= base => Some(op),
-                _ => None,
-            } {
-                input.advance_to(&ahead);
-                let precedence = Precedence::of(&op);
-                let mut rhs = unary_expr(input)?;
-                loop {
-                    let next = peek_precedence(input);
-                    if next > precedence || next == precedence && precedence == Precedence::Assign {
-                        rhs = parse_expr(input, rhs, next)?;
-                    } else {
-                        break;
-                    }
-                }
-                lhs = Expr::Binary(ExprBinary {
-                    attrs: Vec::new(),
-                    left: Box::new(lhs),
-                    op,
-                    right: Box::new(rhs),
-                });
-            } else if Precedence::Cast >= base && input.peek(Token![as]) {
-                let as_token: Token![as] = input.parse()?;
-                let allow_plus = false;
-                let allow_group_generic = false;
-                let ty = ty::parsing::ambig_ty(input, allow_plus, allow_group_generic)?;
-                check_cast(input)?;
-                lhs = Expr::Cast(ExprCast {
-                    attrs: Vec::new(),
-                    expr: Box::new(lhs),
-                    as_token,
-                    ty: Box::new(ty),
-                });
-            } else {
-                break;
-            }
-        }
-        Ok(lhs)
-    }
-
-    fn peek_precedence(input: ParseStream) -> Precedence {
-        if let Ok(op) = input.fork().parse() {
-            Precedence::of(&op)
-        } else if input.peek(Token![=]) && !input.peek(Token![=>]) {
-            Precedence::Assign
-        } else if input.peek(Token![..]) {
-            Precedence::Range
-        } else if input.peek(Token![as]) {
-            Precedence::Cast
-        } else {
-            Precedence::Any
-        }
-    }
-
-    // Parse an arbitrary expression.
-    fn ambiguous_expr(
-        input: ParseStream,
-        #[cfg(feature = "full")] allow_struct: AllowStruct,
-    ) -> Result<Expr> {
-        let lhs = unary_expr(
-            input,
-            #[cfg(feature = "full")]
-            allow_struct,
-        )?;
-        parse_expr(
-            input,
-            lhs,
-            #[cfg(feature = "full")]
-            allow_struct,
-            Precedence::Any,
-        )
-    }
-
-    #[cfg(feature = "full")]
-    fn expr_attrs(input: ParseStream) -> Result<Vec<Attribute>> {
-        let mut attrs = Vec::new();
-        while !input.peek(token::Group) && input.peek(Token![#]) {
-            attrs.push(input.call(attr::parsing::single_parse_outer)?);
-        }
-        Ok(attrs)
-    }
-
-    // <UnOp> <trailer>
-    // & <trailer>
-    // &mut <trailer>
-    // box <trailer>
-    #[cfg(feature = "full")]
-    fn unary_expr(input: ParseStream, allow_struct: AllowStruct) -> Result<Expr> {
-        let begin = input.fork();
-        let attrs = input.call(expr_attrs)?;
-        if input.peek(token::Group) {
-            return trailer_expr(begin, attrs, input, allow_struct);
-        }
-
-        if input.peek(Token![&]) {
-            let and_token: Token![&] = input.parse()?;
-            let raw: Option<kw::raw> = if input.peek(kw::raw)
-                && (input.peek2(Token![mut]) || input.peek2(Token![const]))
-            {
-                Some(input.parse()?)
-            } else {
-                None
-            };
-            let mutability: Option<Token![mut]> = input.parse()?;
-            if raw.is_some() && mutability.is_none() {
-                input.parse::<Token![const]>()?;
-            }
-            let expr = Box::new(unary_expr(input, allow_struct)?);
-            if raw.is_some() {
-                Ok(Expr::Verbatim(verbatim::between(&begin, input)))
-            } else {
-                Ok(Expr::Reference(ExprReference {
-                    attrs,
-                    and_token,
-                    mutability,
-                    expr,
-                }))
-            }
-        } else if input.peek(Token![*]) || input.peek(Token![!]) || input.peek(Token![-]) {
-            expr_unary(input, attrs, allow_struct).map(Expr::Unary)
-        } else {
-            trailer_expr(begin, attrs, input, allow_struct)
-        }
-    }
-
-    #[cfg(not(feature = "full"))]
-    fn unary_expr(input: ParseStream) -> Result<Expr> {
-        if input.peek(Token![&]) {
-            Ok(Expr::Reference(ExprReference {
-                attrs: Vec::new(),
-                and_token: input.parse()?,
-                mutability: input.parse()?,
-                expr: Box::new(unary_expr(input)?),
-            }))
-        } else if input.peek(Token![*]) || input.peek(Token![!]) || input.peek(Token![-]) {
-            Ok(Expr::Unary(ExprUnary {
-                attrs: Vec::new(),
-                op: input.parse()?,
-                expr: Box::new(unary_expr(input)?),
-            }))
-        } else {
-            trailer_expr(input)
-        }
-    }
-
-    // <atom> (..<args>) ...
-    // <atom> . <ident> (..<args>) ...
-    // <atom> . <ident> ...
-    // <atom> . <lit> ...
-    // <atom> [ <expr> ] ...
-    // <atom> ? ...
-    #[cfg(feature = "full")]
-    fn trailer_expr(
-        begin: ParseBuffer,
-        mut attrs: Vec<Attribute>,
-        input: ParseStream,
-        allow_struct: AllowStruct,
-    ) -> Result<Expr> {
-        let atom = atom_expr(input, allow_struct)?;
-        let mut e = trailer_helper(input, atom)?;
-
-        if let Expr::Verbatim(tokens) = &mut e {
-            *tokens = verbatim::between(&begin, input);
-        } else {
-            let inner_attrs = e.replace_attrs(Vec::new());
-            attrs.extend(inner_attrs);
-            e.replace_attrs(attrs);
-        }
-
-        Ok(e)
-    }
-
-    #[cfg(feature = "full")]
-    fn trailer_helper(input: ParseStream, mut e: Expr) -> Result<Expr> {
-        loop {
-            if input.peek(token::Paren) {
-                let content;
-                e = Expr::Call(ExprCall {
-                    attrs: Vec::new(),
-                    func: Box::new(e),
-                    paren_token: parenthesized!(content in input),
-                    args: content.parse_terminated(Expr::parse, Token![,])?,
-                });
-            } else if input.peek(Token![.])
-                && !input.peek(Token![..])
-                && match e {
-                    Expr::Range(_) => false,
-                    _ => true,
-                }
-            {
-                let mut dot_token: Token![.] = input.parse()?;
-
-                let float_token: Option<LitFloat> = input.parse()?;
-                if let Some(float_token) = float_token {
-                    if multi_index(&mut e, &mut dot_token, float_token)? {
-                        continue;
-                    }
-                }
-
-                let await_token: Option<Token![await]> = input.parse()?;
-                if let Some(await_token) = await_token {
-                    e = Expr::Await(ExprAwait {
-                        attrs: Vec::new(),
-                        base: Box::new(e),
-                        dot_token,
-                        await_token,
-                    });
-                    continue;
-                }
-
-                let member: Member = input.parse()?;
-                let turbofish = if member.is_named() && input.peek(Token![::]) {
-                    Some(AngleBracketedGenericArguments::parse_turbofish(input)?)
-                } else {
-                    None
-                };
-
-                if turbofish.is_some() || input.peek(token::Paren) {
-                    if let Member::Named(method) = member {
-                        let content;
-                        e = Expr::MethodCall(ExprMethodCall {
-                            attrs: Vec::new(),
-                            receiver: Box::new(e),
-                            dot_token,
-                            method,
-                            turbofish,
-                            paren_token: parenthesized!(content in input),
-                            args: content.parse_terminated(Expr::parse, Token![,])?,
-                        });
-                        continue;
-                    }
-                }
-
-                e = Expr::Field(ExprField {
-                    attrs: Vec::new(),
-                    base: Box::new(e),
-                    dot_token,
-                    member,
-                });
-            } else if input.peek(token::Bracket) {
-                let content;
-                e = Expr::Index(ExprIndex {
-                    attrs: Vec::new(),
-                    expr: Box::new(e),
-                    bracket_token: bracketed!(content in input),
-                    index: content.parse()?,
-                });
-            } else if input.peek(Token![?]) {
-                e = Expr::Try(ExprTry {
-                    attrs: Vec::new(),
-                    expr: Box::new(e),
-                    question_token: input.parse()?,
-                });
-            } else {
-                break;
-            }
-        }
-        Ok(e)
-    }
-
-    #[cfg(not(feature = "full"))]
-    fn trailer_expr(input: ParseStream) -> Result<Expr> {
-        let mut e = atom_expr(input)?;
-
-        loop {
-            if input.peek(token::Paren) {
-                let content;
-                e = Expr::Call(ExprCall {
-                    attrs: Vec::new(),
-                    func: Box::new(e),
-                    paren_token: parenthesized!(content in input),
-                    args: content.parse_terminated(Expr::parse, Token![,])?,
-                });
-            } else if input.peek(Token![.])
-                && !input.peek(Token![..])
-                && !input.peek2(Token![await])
-            {
-                let mut dot_token: Token![.] = input.parse()?;
-
-                let float_token: Option<LitFloat> = input.parse()?;
-                if let Some(float_token) = float_token {
-                    if multi_index(&mut e, &mut dot_token, float_token)? {
-                        continue;
-                    }
-                }
-
-                let member: Member = input.parse()?;
-                let turbofish = if member.is_named() && input.peek(Token![::]) {
-                    let colon2_token: Token![::] = input.parse()?;
-                    let turbofish =
-                        AngleBracketedGenericArguments::do_parse(Some(colon2_token), input)?;
-                    Some(turbofish)
-                } else {
-                    None
-                };
-
-                if turbofish.is_some() || input.peek(token::Paren) {
-                    if let Member::Named(method) = member {
-                        let content;
-                        e = Expr::MethodCall(ExprMethodCall {
-                            attrs: Vec::new(),
-                            receiver: Box::new(e),
-                            dot_token,
-                            method,
-                            turbofish,
-                            paren_token: parenthesized!(content in input),
-                            args: content.parse_terminated(Expr::parse, Token![,])?,
-                        });
-                        continue;
-                    }
-                }
-
-                e = Expr::Field(ExprField {
-                    attrs: Vec::new(),
-                    base: Box::new(e),
-                    dot_token,
-                    member,
-                });
-            } else if input.peek(token::Bracket) {
-                let content;
-                e = Expr::Index(ExprIndex {
-                    attrs: Vec::new(),
-                    expr: Box::new(e),
-                    bracket_token: bracketed!(content in input),
-                    index: content.parse()?,
-                });
-            } else {
-                break;
-            }
-        }
-
-        Ok(e)
-    }
-
-    // Parse all atomic expressions which don't have to worry about precedence
-    // interactions, as they are fully contained.
-    #[cfg(feature = "full")]
-    fn atom_expr(input: ParseStream, allow_struct: AllowStruct) -> Result<Expr> {
-        if input.peek(token::Group) {
-            expr_group(input, allow_struct)
-        } else if input.peek(Lit) {
-            input.parse().map(Expr::Lit)
-        } else if input.peek(Token![async])
-            && (input.peek2(token::Brace) || input.peek2(Token![move]) && input.peek3(token::Brace))
-        {
-            input.parse().map(Expr::Async)
-        } else if input.peek(Token![try]) && input.peek2(token::Brace) {
-            input.parse().map(Expr::TryBlock)
-        } else if input.peek(Token![|])
-            || input.peek(Token![move])
-            || input.peek(Token![for])
-                && input.peek2(Token![<])
-                && (input.peek3(Lifetime) || input.peek3(Token![>]))
-            || input.peek(Token![const]) && !input.peek2(token::Brace)
-            || input.peek(Token![static])
-            || input.peek(Token![async]) && (input.peek2(Token![|]) || input.peek2(Token![move]))
-        {
-            expr_closure(input, allow_struct).map(Expr::Closure)
-        } else if input.peek(kw::builtin) && input.peek2(Token![#]) {
-            expr_builtin(input)
-        } else if input.peek(Ident)
-            || input.peek(Token![::])
-            || input.peek(Token![<])
-            || input.peek(Token![self])
-            || input.peek(Token![Self])
-            || input.peek(Token![super])
-            || input.peek(Token![crate])
-            || input.peek(Token![try]) && (input.peek2(Token![!]) || input.peek2(Token![::]))
-        {
-            path_or_macro_or_struct(input, allow_struct)
-        } else if input.peek(token::Paren) {
-            paren_or_tuple(input)
-        } else if input.peek(Token![break]) {
-            expr_break(input, allow_struct).map(Expr::Break)
-        } else if input.peek(Token![continue]) {
-            input.parse().map(Expr::Continue)
-        } else if input.peek(Token![return]) {
-            expr_return(input, allow_struct).map(Expr::Return)
-        } else if input.peek(token::Bracket) {
-            array_or_repeat(input)
-        } else if input.peek(Token![let]) {
-            input.parse().map(Expr::Let)
-        } else if input.peek(Token![if]) {
-            input.parse().map(Expr::If)
-        } else if input.peek(Token![while]) {
-            input.parse().map(Expr::While)
-        } else if input.peek(Token![for]) {
-            input.parse().map(Expr::ForLoop)
-        } else if input.peek(Token![loop]) {
-            input.parse().map(Expr::Loop)
-        } else if input.peek(Token![match]) {
-            input.parse().map(Expr::Match)
-        } else if input.peek(Token![yield]) {
-            input.parse().map(Expr::Yield)
-        } else if input.peek(Token![unsafe]) {
-            input.parse().map(Expr::Unsafe)
-        } else if input.peek(Token![const]) {
-            input.parse().map(Expr::Const)
-        } else if input.peek(token::Brace) {
-            input.parse().map(Expr::Block)
-        } else if input.peek(Token![..]) {
-            expr_range(input, allow_struct).map(Expr::Range)
-        } else if input.peek(Token![_]) {
-            input.parse().map(Expr::Infer)
-        } else if input.peek(Lifetime) {
-            atom_labeled(input)
-        } else {
-            Err(input.error("expected an expression"))
-        }
-    }
-
-    #[cfg(feature = "full")]
-    fn atom_labeled(input: ParseStream) -> Result<Expr> {
-        let the_label: Label = input.parse()?;
-        let mut expr = if input.peek(Token![while]) {
-            Expr::While(input.parse()?)
-        } else if input.peek(Token![for]) {
-            Expr::ForLoop(input.parse()?)
-        } else if input.peek(Token![loop]) {
-            Expr::Loop(input.parse()?)
-        } else if input.peek(token::Brace) {
-            Expr::Block(input.parse()?)
-        } else {
-            return Err(input.error("expected loop or block expression"));
-        };
-        match &mut expr {
-            Expr::While(ExprWhile { label, .. })
-            | Expr::ForLoop(ExprForLoop { label, .. })
-            | Expr::Loop(ExprLoop { label, .. })
-            | Expr::Block(ExprBlock { label, .. }) => *label = Some(the_label),
-            _ => unreachable!(),
-        }
-        Ok(expr)
-    }
-
-    #[cfg(not(feature = "full"))]
-    fn atom_expr(input: ParseStream) -> Result<Expr> {
-        if input.peek(token::Group) {
-            expr_group(input)
-        } else if input.peek(Lit) {
-            input.parse().map(Expr::Lit)
-        } else if input.peek(token::Paren) {
-            input.call(expr_paren).map(Expr::Paren)
-        } else if input.peek(Ident)
-            || input.peek(Token![::])
-            || input.peek(Token![<])
-            || input.peek(Token![self])
-            || input.peek(Token![Self])
-            || input.peek(Token![super])
-            || input.peek(Token![crate])
-        {
-            path_or_macro_or_struct(input)
-        } else if input.is_empty() {
-            Err(input.error("expected an expression"))
-        } else {
-            if input.peek(token::Brace) {
-                let scan = input.fork();
-                let content;
-                braced!(content in scan);
-                if content.parse::<Expr>().is_ok() && content.is_empty() {
-                    let expr_block = verbatim::between(input, &scan);
-                    input.advance_to(&scan);
-                    return Ok(Expr::Verbatim(expr_block));
-                }
-            }
-            Err(input.error("unsupported expression; enable syn's features=[\"full\"]"))
-        }
-    }
-
-    #[cfg(feature = "full")]
-    fn expr_builtin(input: ParseStream) -> Result<Expr> {
-        let begin = input.fork();
-
-        input.parse::<kw::builtin>()?;
-        input.parse::<Token![#]>()?;
-        input.parse::<Ident>()?;
-
-        let args;
-        parenthesized!(args in input);
-        args.parse::<TokenStream>()?;
-
-        Ok(Expr::Verbatim(verbatim::between(&begin, input)))
-    }
-
-    fn path_or_macro_or_struct(
-        input: ParseStream,
-        #[cfg(feature = "full")] allow_struct: AllowStruct,
-    ) -> Result<Expr> {
-        let (qself, path) = path::parsing::qpath(input, true)?;
-        rest_of_path_or_macro_or_struct(
-            qself,
-            path,
-            input,
-            #[cfg(feature = "full")]
-            allow_struct,
-        )
-    }
-
-    fn rest_of_path_or_macro_or_struct(
-        qself: Option<QSelf>,
-        path: Path,
-        input: ParseStream,
-        #[cfg(feature = "full")] allow_struct: AllowStruct,
-    ) -> Result<Expr> {
-        if qself.is_none()
-            && input.peek(Token![!])
-            && !input.peek(Token![!=])
-            && path.is_mod_style()
-        {
-            let bang_token: Token![!] = input.parse()?;
-            let (delimiter, tokens) = mac::parse_delimiter(input)?;
-            return Ok(Expr::Macro(ExprMacro {
-                attrs: Vec::new(),
-                mac: Macro {
-                    path,
-                    bang_token,
-                    delimiter,
-                    tokens,
-                },
-            }));
-        }
-
-        #[cfg(not(feature = "full"))]
-        let allow_struct = (true,);
-        if allow_struct.0 && input.peek(token::Brace) {
-            return expr_struct_helper(input, qself, path).map(Expr::Struct);
-        }
-
-        Ok(Expr::Path(ExprPath {
-            attrs: Vec::new(),
-            qself,
-            path,
-        }))
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprMacro {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(ExprMacro {
-                attrs: Vec::new(),
-                mac: input.parse()?,
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    fn paren_or_tuple(input: ParseStream) -> Result<Expr> {
-        let content;
-        let paren_token = parenthesized!(content in input);
-        if content.is_empty() {
-            return Ok(Expr::Tuple(ExprTuple {
-                attrs: Vec::new(),
-                paren_token,
-                elems: Punctuated::new(),
-            }));
-        }
-
-        let first: Expr = content.parse()?;
-        if content.is_empty() {
-            return Ok(Expr::Paren(ExprParen {
-                attrs: Vec::new(),
-                paren_token,
-                expr: Box::new(first),
-            }));
-        }
-
-        let mut elems = Punctuated::new();
-        elems.push_value(first);
-        while !content.is_empty() {
-            let punct = content.parse()?;
-            elems.push_punct(punct);
-            if content.is_empty() {
-                break;
-            }
-            let value = content.parse()?;
-            elems.push_value(value);
-        }
-        Ok(Expr::Tuple(ExprTuple {
-            attrs: Vec::new(),
-            paren_token,
-            elems,
-        }))
-    }
-
-    #[cfg(feature = "full")]
-    fn array_or_repeat(input: ParseStream) -> Result<Expr> {
-        let content;
-        let bracket_token = bracketed!(content in input);
-        if content.is_empty() {
-            return Ok(Expr::Array(ExprArray {
-                attrs: Vec::new(),
-                bracket_token,
-                elems: Punctuated::new(),
-            }));
-        }
-
-        let first: Expr = content.parse()?;
-        if content.is_empty() || content.peek(Token![,]) {
-            let mut elems = Punctuated::new();
-            elems.push_value(first);
-            while !content.is_empty() {
-                let punct = content.parse()?;
-                elems.push_punct(punct);
-                if content.is_empty() {
-                    break;
-                }
-                let value = content.parse()?;
-                elems.push_value(value);
-            }
-            Ok(Expr::Array(ExprArray {
-                attrs: Vec::new(),
-                bracket_token,
-                elems,
-            }))
-        } else if content.peek(Token![;]) {
-            let semi_token: Token![;] = content.parse()?;
-            let len: Expr = content.parse()?;
-            Ok(Expr::Repeat(ExprRepeat {
-                attrs: Vec::new(),
-                bracket_token,
-                expr: Box::new(first),
-                semi_token,
-                len: Box::new(len),
-            }))
-        } else {
-            Err(content.error("expected `,` or `;`"))
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprArray {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let content;
-            let bracket_token = bracketed!(content in input);
-            let mut elems = Punctuated::new();
-
-            while !content.is_empty() {
-                let first: Expr = content.parse()?;
-                elems.push_value(first);
-                if content.is_empty() {
-                    break;
-                }
-                let punct = content.parse()?;
-                elems.push_punct(punct);
-            }
-
-            Ok(ExprArray {
-                attrs: Vec::new(),
-                bracket_token,
-                elems,
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprRepeat {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let content;
-            Ok(ExprRepeat {
-                bracket_token: bracketed!(content in input),
-                attrs: Vec::new(),
-                expr: content.parse()?,
-                semi_token: content.parse()?,
-                len: content.parse()?,
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    pub(crate) fn expr_early(input: ParseStream) -> Result<Expr> {
-        let mut attrs = input.call(expr_attrs)?;
-        let mut expr = if input.peek(token::Group) {
-            let allow_struct = AllowStruct(true);
-            let atom = expr_group(input, allow_struct)?;
-            if continue_parsing_early(&atom) {
-                trailer_helper(input, atom)?
-            } else {
-                atom
-            }
-        } else if input.peek(Token![if]) {
-            Expr::If(input.parse()?)
-        } else if input.peek(Token![while]) {
-            Expr::While(input.parse()?)
-        } else if input.peek(Token![for])
-            && !(input.peek2(Token![<]) && (input.peek3(Lifetime) || input.peek3(Token![>])))
-        {
-            Expr::ForLoop(input.parse()?)
-        } else if input.peek(Token![loop]) {
-            Expr::Loop(input.parse()?)
-        } else if input.peek(Token![match]) {
-            Expr::Match(input.parse()?)
-        } else if input.peek(Token![try]) && input.peek2(token::Brace) {
-            Expr::TryBlock(input.parse()?)
-        } else if input.peek(Token![unsafe]) {
-            Expr::Unsafe(input.parse()?)
-        } else if input.peek(Token![const]) && input.peek2(token::Brace) {
-            Expr::Const(input.parse()?)
-        } else if input.peek(token::Brace) {
-            Expr::Block(input.parse()?)
-        } else if input.peek(Lifetime) {
-            atom_labeled(input)?
-        } else {
-            let allow_struct = AllowStruct(true);
-            unary_expr(input, allow_struct)?
-        };
-
-        if continue_parsing_early(&expr) {
-            attrs.extend(expr.replace_attrs(Vec::new()));
-            expr.replace_attrs(attrs);
-
-            let allow_struct = AllowStruct(true);
-            return parse_expr(input, expr, allow_struct, Precedence::Any);
-        }
-
-        if input.peek(Token![.]) && !input.peek(Token![..]) || input.peek(Token![?]) {
-            expr = trailer_helper(input, expr)?;
-
-            attrs.extend(expr.replace_attrs(Vec::new()));
-            expr.replace_attrs(attrs);
-
-            let allow_struct = AllowStruct(true);
-            return parse_expr(input, expr, allow_struct, Precedence::Any);
-        }
-
-        attrs.extend(expr.replace_attrs(Vec::new()));
-        expr.replace_attrs(attrs);
-        Ok(expr)
-    }
-
-    #[cfg(feature = "full")]
-    fn continue_parsing_early(mut expr: &Expr) -> bool {
-        while let Expr::Group(group) = expr {
-            expr = &group.expr;
-        }
-        match expr {
-            Expr::If(_)
-            | Expr::While(_)
-            | Expr::ForLoop(_)
-            | Expr::Loop(_)
-            | Expr::Match(_)
-            | Expr::TryBlock(_)
-            | Expr::Unsafe(_)
-            | Expr::Const(_)
-            | Expr::Block(_) => false,
-            _ => true,
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprLit {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(ExprLit {
-                attrs: Vec::new(),
-                lit: input.parse()?,
-            })
-        }
-    }
-
-    fn expr_group(
-        input: ParseStream,
-        #[cfg(feature = "full")] allow_struct: AllowStruct,
-    ) -> Result<Expr> {
-        let group = crate::group::parse_group(input)?;
-        let mut inner: Expr = group.content.parse()?;
-
-        match inner {
-            Expr::Path(mut expr) if expr.attrs.is_empty() => {
-                let grouped_len = expr.path.segments.len();
-                Path::parse_rest(input, &mut expr.path, true)?;
-                match rest_of_path_or_macro_or_struct(
-                    expr.qself,
-                    expr.path,
-                    input,
-                    #[cfg(feature = "full")]
-                    allow_struct,
-                )? {
-                    Expr::Path(expr) if expr.path.segments.len() == grouped_len => {
-                        inner = Expr::Path(expr);
-                    }
-                    extended => return Ok(extended),
-                }
-            }
-            _ => {}
-        }
-
-        Ok(Expr::Group(ExprGroup {
-            attrs: Vec::new(),
-            group_token: group.token,
-            expr: Box::new(inner),
-        }))
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprParen {
-        fn parse(input: ParseStream) -> Result<Self> {
-            expr_paren(input)
-        }
-    }
-
-    fn expr_paren(input: ParseStream) -> Result<ExprParen> {
-        let content;
-        Ok(ExprParen {
-            attrs: Vec::new(),
-            paren_token: parenthesized!(content in input),
-            expr: content.parse()?,
-        })
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprLet {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(ExprLet {
-                attrs: Vec::new(),
-                let_token: input.parse()?,
-                pat: Box::new(Pat::parse_multi_with_leading_vert(input)?),
-                eq_token: input.parse()?,
-                expr: Box::new({
-                    let allow_struct = AllowStruct(false);
-                    let lhs = unary_expr(input, allow_struct)?;
-                    parse_expr(input, lhs, allow_struct, Precedence::Compare)?
-                }),
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprIf {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            Ok(ExprIf {
-                attrs,
-                if_token: input.parse()?,
-                cond: Box::new(input.call(Expr::parse_without_eager_brace)?),
-                then_branch: input.parse()?,
-                else_branch: {
-                    if input.peek(Token![else]) {
-                        Some(input.call(else_block)?)
-                    } else {
-                        None
-                    }
-                },
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    fn else_block(input: ParseStream) -> Result<(Token![else], Box<Expr>)> {
-        let else_token: Token![else] = input.parse()?;
-
-        let lookahead = input.lookahead1();
-        let else_branch = if lookahead.peek(Token![if]) {
-            input.parse().map(Expr::If)?
-        } else if lookahead.peek(token::Brace) {
-            Expr::Block(ExprBlock {
-                attrs: Vec::new(),
-                label: None,
-                block: input.parse()?,
-            })
-        } else {
-            return Err(lookahead.error());
-        };
-
-        Ok((else_token, Box::new(else_branch)))
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprInfer {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(ExprInfer {
-                attrs: input.call(Attribute::parse_outer)?,
-                underscore_token: input.parse()?,
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprForLoop {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let mut attrs = input.call(Attribute::parse_outer)?;
-            let label: Option<Label> = input.parse()?;
-            let for_token: Token![for] = input.parse()?;
-
-            let pat = Pat::parse_multi_with_leading_vert(input)?;
-
-            let in_token: Token![in] = input.parse()?;
-            let expr: Expr = input.call(Expr::parse_without_eager_brace)?;
-
-            let content;
-            let brace_token = braced!(content in input);
-            attr::parsing::parse_inner(&content, &mut attrs)?;
-            let stmts = content.call(Block::parse_within)?;
-
-            Ok(ExprForLoop {
-                attrs,
-                label,
-                for_token,
-                pat: Box::new(pat),
-                in_token,
-                expr: Box::new(expr),
-                body: Block { brace_token, stmts },
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprLoop {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let mut attrs = input.call(Attribute::parse_outer)?;
-            let label: Option<Label> = input.parse()?;
-            let loop_token: Token![loop] = input.parse()?;
-
-            let content;
-            let brace_token = braced!(content in input);
-            attr::parsing::parse_inner(&content, &mut attrs)?;
-            let stmts = content.call(Block::parse_within)?;
-
-            Ok(ExprLoop {
-                attrs,
-                label,
-                loop_token,
-                body: Block { brace_token, stmts },
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprMatch {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let mut attrs = input.call(Attribute::parse_outer)?;
-            let match_token: Token![match] = input.parse()?;
-            let expr = Expr::parse_without_eager_brace(input)?;
-
-            let content;
-            let brace_token = braced!(content in input);
-            attr::parsing::parse_inner(&content, &mut attrs)?;
-
-            let mut arms = Vec::new();
-            while !content.is_empty() {
-                arms.push(content.call(Arm::parse)?);
-            }
-
-            Ok(ExprMatch {
-                attrs,
-                match_token,
-                expr: Box::new(expr),
-                brace_token,
-                arms,
-            })
-        }
-    }
-
-    macro_rules! impl_by_parsing_expr {
-        (
-            $(
-                $expr_type:ty, $variant:ident, $msg:expr,
-            )*
-        ) => {
-            $(
-                #[cfg(all(feature = "full", feature = "printing"))]
-                #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-                impl Parse for $expr_type {
-                    fn parse(input: ParseStream) -> Result<Self> {
-                        let mut expr: Expr = input.parse()?;
-                        loop {
-                            match expr {
-                                Expr::$variant(inner) => return Ok(inner),
-                                Expr::Group(next) => expr = *next.expr,
-                                _ => return Err(Error::new_spanned(expr, $msg)),
-                            }
-                        }
-                    }
-                }
-            )*
-        };
-    }
-
-    impl_by_parsing_expr! {
-        ExprAssign, Assign, "expected assignment expression",
-        ExprAwait, Await, "expected await expression",
-        ExprBinary, Binary, "expected binary operation",
-        ExprCall, Call, "expected function call expression",
-        ExprCast, Cast, "expected cast expression",
-        ExprField, Field, "expected struct field access",
-        ExprIndex, Index, "expected indexing expression",
-        ExprMethodCall, MethodCall, "expected method call expression",
-        ExprRange, Range, "expected range expression",
-        ExprTry, Try, "expected try expression",
-        ExprTuple, Tuple, "expected tuple expression",
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprUnary {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = Vec::new();
-            let allow_struct = AllowStruct(true);
-            expr_unary(input, attrs, allow_struct)
-        }
-    }
-
-    #[cfg(feature = "full")]
-    fn expr_unary(
-        input: ParseStream,
-        attrs: Vec<Attribute>,
-        allow_struct: AllowStruct,
-    ) -> Result<ExprUnary> {
-        Ok(ExprUnary {
-            attrs,
-            op: input.parse()?,
-            expr: Box::new(unary_expr(input, allow_struct)?),
-        })
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprClosure {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let allow_struct = AllowStruct(true);
-            expr_closure(input, allow_struct)
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprReference {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let allow_struct = AllowStruct(true);
-            Ok(ExprReference {
-                attrs: Vec::new(),
-                and_token: input.parse()?,
-                mutability: input.parse()?,
-                expr: Box::new(unary_expr(input, allow_struct)?),
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprBreak {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let allow_struct = AllowStruct(true);
-            expr_break(input, allow_struct)
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprReturn {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let allow_struct = AllowStruct(true);
-            expr_return(input, allow_struct)
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprTryBlock {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(ExprTryBlock {
-                attrs: Vec::new(),
-                try_token: input.parse()?,
-                block: input.parse()?,
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprYield {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(ExprYield {
-                attrs: Vec::new(),
-                yield_token: input.parse()?,
-                expr: {
-                    if can_begin_expr(input) {
-                        Some(input.parse()?)
-                    } else {
-                        None
-                    }
-                },
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    fn expr_closure(input: ParseStream, allow_struct: AllowStruct) -> Result<ExprClosure> {
-        let lifetimes: Option<BoundLifetimes> = input.parse()?;
-        let constness: Option<Token![const]> = input.parse()?;
-        let movability: Option<Token![static]> = input.parse()?;
-        let asyncness: Option<Token![async]> = input.parse()?;
-        let capture: Option<Token![move]> = input.parse()?;
-        let or1_token: Token![|] = input.parse()?;
-
-        let mut inputs = Punctuated::new();
-        loop {
-            if input.peek(Token![|]) {
-                break;
-            }
-            let value = closure_arg(input)?;
-            inputs.push_value(value);
-            if input.peek(Token![|]) {
-                break;
-            }
-            let punct: Token![,] = input.parse()?;
-            inputs.push_punct(punct);
-        }
-
-        let or2_token: Token![|] = input.parse()?;
-
-        let (output, body) = if input.peek(Token![->]) {
-            let arrow_token: Token![->] = input.parse()?;
-            let ty: Type = input.parse()?;
-            let body: Block = input.parse()?;
-            let output = ReturnType::Type(arrow_token, Box::new(ty));
-            let block = Expr::Block(ExprBlock {
-                attrs: Vec::new(),
-                label: None,
-                block: body,
-            });
-            (output, block)
-        } else {
-            let body = ambiguous_expr(input, allow_struct)?;
-            (ReturnType::Default, body)
-        };
-
-        Ok(ExprClosure {
-            attrs: Vec::new(),
-            lifetimes,
-            constness,
-            movability,
-            asyncness,
-            capture,
-            or1_token,
-            inputs,
-            or2_token,
-            output,
-            body: Box::new(body),
-        })
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprAsync {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(ExprAsync {
-                attrs: Vec::new(),
-                async_token: input.parse()?,
-                capture: input.parse()?,
-                block: input.parse()?,
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    fn closure_arg(input: ParseStream) -> Result<Pat> {
-        let attrs = input.call(Attribute::parse_outer)?;
-        let mut pat = Pat::parse_single(input)?;
-
-        if input.peek(Token![:]) {
-            Ok(Pat::Type(PatType {
-                attrs,
-                pat: Box::new(pat),
-                colon_token: input.parse()?,
-                ty: input.parse()?,
-            }))
-        } else {
-            match &mut pat {
-                Pat::Const(pat) => pat.attrs = attrs,
-                Pat::Ident(pat) => pat.attrs = attrs,
-                Pat::Lit(pat) => pat.attrs = attrs,
-                Pat::Macro(pat) => pat.attrs = attrs,
-                Pat::Or(pat) => pat.attrs = attrs,
-                Pat::Paren(pat) => pat.attrs = attrs,
-                Pat::Path(pat) => pat.attrs = attrs,
-                Pat::Range(pat) => pat.attrs = attrs,
-                Pat::Reference(pat) => pat.attrs = attrs,
-                Pat::Rest(pat) => pat.attrs = attrs,
-                Pat::Slice(pat) => pat.attrs = attrs,
-                Pat::Struct(pat) => pat.attrs = attrs,
-                Pat::Tuple(pat) => pat.attrs = attrs,
-                Pat::TupleStruct(pat) => pat.attrs = attrs,
-                Pat::Type(_) => unreachable!(),
-                Pat::Verbatim(_) => {}
-                Pat::Wild(pat) => pat.attrs = attrs,
-            }
-            Ok(pat)
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprWhile {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let mut attrs = input.call(Attribute::parse_outer)?;
-            let label: Option<Label> = input.parse()?;
-            let while_token: Token![while] = input.parse()?;
-            let cond = Expr::parse_without_eager_brace(input)?;
-
-            let content;
-            let brace_token = braced!(content in input);
-            attr::parsing::parse_inner(&content, &mut attrs)?;
-            let stmts = content.call(Block::parse_within)?;
-
-            Ok(ExprWhile {
-                attrs,
-                label,
-                while_token,
-                cond: Box::new(cond),
-                body: Block { brace_token, stmts },
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprConst {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let const_token: Token![const] = input.parse()?;
-
-            let content;
-            let brace_token = braced!(content in input);
-            let inner_attrs = content.call(Attribute::parse_inner)?;
-            let stmts = content.call(Block::parse_within)?;
-
-            Ok(ExprConst {
-                attrs: inner_attrs,
-                const_token,
-                block: Block { brace_token, stmts },
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Label {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(Label {
-                name: input.parse()?,
-                colon_token: input.parse()?,
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Option<Label> {
-        fn parse(input: ParseStream) -> Result<Self> {
-            if input.peek(Lifetime) {
-                input.parse().map(Some)
-            } else {
-                Ok(None)
-            }
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprContinue {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(ExprContinue {
-                attrs: Vec::new(),
-                continue_token: input.parse()?,
-                label: input.parse()?,
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    fn expr_break(input: ParseStream, allow_struct: AllowStruct) -> Result<ExprBreak> {
-        let break_token: Token![break] = input.parse()?;
-
-        let ahead = input.fork();
-        let label: Option<Lifetime> = ahead.parse()?;
-        if label.is_some() && ahead.peek(Token![:]) {
-            // Not allowed: `break 'label: loop {...}`
-            // Parentheses are required. `break ('label: loop {...})`
-            let _ = ambiguous_expr(input, allow_struct)?;
-            let start_span = label.unwrap().apostrophe;
-            let end_span = input.cursor().prev_span();
-            return Err(crate::error::new2(
-                start_span,
-                end_span,
-                "parentheses required",
-            ));
-        }
-
-        input.advance_to(&ahead);
-        let expr = if can_begin_expr(input) && (allow_struct.0 || !input.peek(token::Brace)) {
-            let expr = ambiguous_expr(input, allow_struct)?;
-            Some(Box::new(expr))
-        } else {
-            None
-        };
-
-        Ok(ExprBreak {
-            attrs: Vec::new(),
-            break_token,
-            label,
-            expr,
-        })
-    }
-
-    #[cfg(feature = "full")]
-    fn expr_return(input: ParseStream, allow_struct: AllowStruct) -> Result<ExprReturn> {
-        Ok(ExprReturn {
-            attrs: Vec::new(),
-            return_token: input.parse()?,
-            expr: {
-                if can_begin_expr(input) {
-                    // NOTE: return is greedy and eats blocks after it even when in a
-                    // position where structs are not allowed, such as in if statement
-                    // conditions. For example:
-                    //
-                    // if return { println!("A") } {} // Prints "A"
-                    let expr = ambiguous_expr(input, allow_struct)?;
-                    Some(Box::new(expr))
-                } else {
-                    None
-                }
-            },
-        })
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for FieldValue {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let member: Member = input.parse()?;
-            let (colon_token, value) = if input.peek(Token![:]) || !member.is_named() {
-                let colon_token: Token![:] = input.parse()?;
-                let value: Expr = input.parse()?;
-                (Some(colon_token), value)
-            } else if let Member::Named(ident) = &member {
-                let value = Expr::Path(ExprPath {
-                    attrs: Vec::new(),
-                    qself: None,
-                    path: Path::from(ident.clone()),
-                });
-                (None, value)
-            } else {
-                unreachable!()
-            };
-
-            Ok(FieldValue {
-                attrs,
-                member,
-                colon_token,
-                expr: value,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprStruct {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let (qself, path) = path::parsing::qpath(input, true)?;
-            expr_struct_helper(input, qself, path)
-        }
-    }
-
-    fn expr_struct_helper(
-        input: ParseStream,
-        qself: Option<QSelf>,
-        path: Path,
-    ) -> Result<ExprStruct> {
-        let content;
-        let brace_token = braced!(content in input);
-
-        let mut fields = Punctuated::new();
-        while !content.is_empty() {
-            if content.peek(Token![..]) {
-                return Ok(ExprStruct {
-                    attrs: Vec::new(),
-                    qself,
-                    path,
-                    brace_token,
-                    fields,
-                    dot2_token: Some(content.parse()?),
-                    rest: if content.is_empty() {
-                        None
-                    } else {
-                        Some(Box::new(content.parse()?))
-                    },
-                });
-            }
-
-            fields.push(content.parse()?);
-            if content.is_empty() {
-                break;
-            }
-            let punct: Token![,] = content.parse()?;
-            fields.push_punct(punct);
-        }
-
-        Ok(ExprStruct {
-            attrs: Vec::new(),
-            qself,
-            path,
-            brace_token,
-            fields,
-            dot2_token: None,
-            rest: None,
-        })
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprUnsafe {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let unsafe_token: Token![unsafe] = input.parse()?;
-
-            let content;
-            let brace_token = braced!(content in input);
-            let inner_attrs = content.call(Attribute::parse_inner)?;
-            let stmts = content.call(Block::parse_within)?;
-
-            Ok(ExprUnsafe {
-                attrs: inner_attrs,
-                unsafe_token,
-                block: Block { brace_token, stmts },
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprBlock {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let mut attrs = input.call(Attribute::parse_outer)?;
-            let label: Option<Label> = input.parse()?;
-
-            let content;
-            let brace_token = braced!(content in input);
-            attr::parsing::parse_inner(&content, &mut attrs)?;
-            let stmts = content.call(Block::parse_within)?;
-
-            Ok(ExprBlock {
-                attrs,
-                label,
-                block: Block { brace_token, stmts },
-            })
-        }
-    }
-
-    #[cfg(feature = "full")]
-    fn expr_range(input: ParseStream, allow_struct: AllowStruct) -> Result<ExprRange> {
-        let limits: RangeLimits = input.parse()?;
-        let end = if matches!(limits, RangeLimits::HalfOpen(_))
-            && (input.is_empty()
-                || input.peek(Token![,])
-                || input.peek(Token![;])
-                || input.peek(Token![.]) && !input.peek(Token![..])
-                || !allow_struct.0 && input.peek(token::Brace))
-        {
-            None
-        } else {
-            let to = ambiguous_expr(input, allow_struct)?;
-            Some(Box::new(to))
-        };
-        Ok(ExprRange {
-            attrs: Vec::new(),
-            start: None,
-            limits,
-            end,
-        })
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for RangeLimits {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let lookahead = input.lookahead1();
-            let dot_dot = lookahead.peek(Token![..]);
-            let dot_dot_eq = dot_dot && lookahead.peek(Token![..=]);
-            let dot_dot_dot = dot_dot && input.peek(Token![...]);
-            if dot_dot_eq {
-                input.parse().map(RangeLimits::Closed)
-            } else if dot_dot && !dot_dot_dot {
-                input.parse().map(RangeLimits::HalfOpen)
-            } else {
-                Err(lookahead.error())
-            }
-        }
-    }
-
-    #[cfg(feature = "full")]
-    impl RangeLimits {
-        pub(crate) fn parse_obsolete(input: ParseStream) -> Result<Self> {
-            let lookahead = input.lookahead1();
-            let dot_dot = lookahead.peek(Token![..]);
-            let dot_dot_eq = dot_dot && lookahead.peek(Token![..=]);
-            let dot_dot_dot = dot_dot && input.peek(Token![...]);
-            if dot_dot_eq {
-                input.parse().map(RangeLimits::Closed)
-            } else if dot_dot_dot {
-                let dot3: Token![...] = input.parse()?;
-                Ok(RangeLimits::Closed(Token![..=](dot3.spans)))
-            } else if dot_dot {
-                input.parse().map(RangeLimits::HalfOpen)
-            } else {
-                Err(lookahead.error())
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ExprPath {
-        fn parse(input: ParseStream) -> Result<Self> {
-            #[cfg(not(feature = "full"))]
-            let attrs = Vec::new();
-            #[cfg(feature = "full")]
-            let attrs = input.call(Attribute::parse_outer)?;
-
-            let (qself, path) = path::parsing::qpath(input, true)?;
-
-            Ok(ExprPath { attrs, qself, path })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Member {
-        fn parse(input: ParseStream) -> Result<Self> {
-            if input.peek(Ident) {
-                input.parse().map(Member::Named)
-            } else if input.peek(LitInt) {
-                input.parse().map(Member::Unnamed)
-            } else {
-                Err(input.error("expected identifier or integer"))
-            }
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Arm {
-        fn parse(input: ParseStream) -> Result<Arm> {
-            let requires_comma;
-            Ok(Arm {
-                attrs: input.call(Attribute::parse_outer)?,
-                pat: Pat::parse_multi_with_leading_vert(input)?,
-                guard: {
-                    if input.peek(Token![if]) {
-                        let if_token: Token![if] = input.parse()?;
-                        let guard: Expr = input.parse()?;
-                        Some((if_token, Box::new(guard)))
-                    } else {
-                        None
-                    }
-                },
-                fat_arrow_token: input.parse()?,
-                body: {
-                    let body = input.call(expr_early)?;
-                    requires_comma = requires_terminator(&body);
-                    Box::new(body)
-                },
-                comma: {
-                    if requires_comma && !input.is_empty() {
-                        Some(input.parse()?)
-                    } else {
-                        input.parse()?
-                    }
-                },
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Index {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let lit: LitInt = input.parse()?;
-            if lit.suffix().is_empty() {
-                Ok(Index {
-                    index: lit
-                        .base10_digits()
-                        .parse()
-                        .map_err(|err| Error::new(lit.span(), err))?,
-                    span: lit.span(),
-                })
-            } else {
-                Err(Error::new(lit.span(), "expected unsuffixed integer"))
-            }
-        }
-    }
-
-    fn multi_index(e: &mut Expr, dot_token: &mut Token![.], float: LitFloat) -> Result<bool> {
-        let float_token = float.token();
-        let float_span = float_token.span();
-        let mut float_repr = float_token.to_string();
-        let trailing_dot = float_repr.ends_with('.');
-        if trailing_dot {
-            float_repr.truncate(float_repr.len() - 1);
-        }
-
-        let mut offset = 0;
-        for part in float_repr.split('.') {
-            let mut index: Index =
-                crate::parse_str(part).map_err(|err| Error::new(float_span, err))?;
-            let part_end = offset + part.len();
-            index.span = float_token.subspan(offset..part_end).unwrap_or(float_span);
-
-            let base = mem::replace(e, Expr::DUMMY);
-            *e = Expr::Field(ExprField {
-                attrs: Vec::new(),
-                base: Box::new(base),
-                dot_token: Token![.](dot_token.span),
-                member: Member::Unnamed(index),
-            });
-
-            let dot_span = float_token
-                .subspan(part_end..part_end + 1)
-                .unwrap_or(float_span);
-            *dot_token = Token![.](dot_span);
-            offset = part_end + 1;
-        }
-
-        Ok(!trailing_dot)
-    }
-
-    impl Member {
-        pub(crate) fn is_named(&self) -> bool {
-            match self {
-                Member::Named(_) => true,
-                Member::Unnamed(_) => false,
-            }
-        }
-    }
-
-    fn check_cast(input: ParseStream) -> Result<()> {
-        let kind = if input.peek(Token![.]) && !input.peek(Token![..]) {
-            if input.peek2(Token![await]) {
-                "`.await`"
-            } else if input.peek2(Ident) && (input.peek3(token::Paren) || input.peek3(Token![::])) {
-                "a method call"
-            } else {
-                "a field access"
-            }
-        } else if input.peek(Token![?]) {
-            "`?`"
-        } else if input.peek(token::Bracket) {
-            "indexing"
-        } else if input.peek(token::Paren) {
-            "a function call"
-        } else {
-            return Ok(());
-        };
-        let msg = format!("casts cannot be followed by {}", kind);
-        Err(input.error(msg))
-    }
-}
-
-#[cfg(feature = "printing")]
-pub(crate) mod printing {
-    use super::*;
-    #[cfg(feature = "full")]
-    use crate::attr::FilterAttrs;
-    use proc_macro2::{Literal, TokenStream};
-    use quote::{ToTokens, TokenStreamExt};
-
-    // If the given expression is a bare `ExprStruct`, wraps it in parenthesis
-    // before appending it to `TokenStream`.
-    #[cfg(feature = "full")]
-    fn wrap_bare_struct(tokens: &mut TokenStream, e: &Expr) {
-        if let Expr::Struct(_) = *e {
-            token::Paren::default().surround(tokens, |tokens| {
-                e.to_tokens(tokens);
-            });
-        } else {
-            e.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    pub(crate) fn outer_attrs_to_tokens(attrs: &[Attribute], tokens: &mut TokenStream) {
-        tokens.append_all(attrs.outer());
-    }
-
-    #[cfg(feature = "full")]
-    fn inner_attrs_to_tokens(attrs: &[Attribute], tokens: &mut TokenStream) {
-        tokens.append_all(attrs.inner());
-    }
-
-    #[cfg(not(feature = "full"))]
-    pub(crate) fn outer_attrs_to_tokens(_attrs: &[Attribute], _tokens: &mut TokenStream) {}
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprArray {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.bracket_token.surround(tokens, |tokens| {
-                self.elems.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprAssign {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.left.to_tokens(tokens);
-            self.eq_token.to_tokens(tokens);
-            self.right.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprAsync {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.async_token.to_tokens(tokens);
-            self.capture.to_tokens(tokens);
-            self.block.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprAwait {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.base.to_tokens(tokens);
-            self.dot_token.to_tokens(tokens);
-            self.await_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprBinary {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.left.to_tokens(tokens);
-            self.op.to_tokens(tokens);
-            self.right.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprBlock {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.label.to_tokens(tokens);
-            self.block.brace_token.surround(tokens, |tokens| {
-                inner_attrs_to_tokens(&self.attrs, tokens);
-                tokens.append_all(&self.block.stmts);
-            });
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprBreak {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.break_token.to_tokens(tokens);
-            self.label.to_tokens(tokens);
-            self.expr.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprCall {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.func.to_tokens(tokens);
-            self.paren_token.surround(tokens, |tokens| {
-                self.args.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprCast {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.expr.to_tokens(tokens);
-            self.as_token.to_tokens(tokens);
-            self.ty.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprClosure {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.lifetimes.to_tokens(tokens);
-            self.constness.to_tokens(tokens);
-            self.movability.to_tokens(tokens);
-            self.asyncness.to_tokens(tokens);
-            self.capture.to_tokens(tokens);
-            self.or1_token.to_tokens(tokens);
-            self.inputs.to_tokens(tokens);
-            self.or2_token.to_tokens(tokens);
-            self.output.to_tokens(tokens);
-            self.body.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprConst {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.const_token.to_tokens(tokens);
-            self.block.brace_token.surround(tokens, |tokens| {
-                inner_attrs_to_tokens(&self.attrs, tokens);
-                tokens.append_all(&self.block.stmts);
-            });
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprContinue {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.continue_token.to_tokens(tokens);
-            self.label.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprField {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.base.to_tokens(tokens);
-            self.dot_token.to_tokens(tokens);
-            self.member.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprForLoop {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.label.to_tokens(tokens);
-            self.for_token.to_tokens(tokens);
-            self.pat.to_tokens(tokens);
-            self.in_token.to_tokens(tokens);
-            wrap_bare_struct(tokens, &self.expr);
-            self.body.brace_token.surround(tokens, |tokens| {
-                inner_attrs_to_tokens(&self.attrs, tokens);
-                tokens.append_all(&self.body.stmts);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprGroup {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.group_token.surround(tokens, |tokens| {
-                self.expr.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprIf {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.if_token.to_tokens(tokens);
-            wrap_bare_struct(tokens, &self.cond);
-            self.then_branch.to_tokens(tokens);
-            if let Some((else_token, else_)) = &self.else_branch {
-                else_token.to_tokens(tokens);
-                // If we are not one of the valid expressions to exist in an else
-                // clause, wrap ourselves in a block.
-                match **else_ {
-                    Expr::If(_) | Expr::Block(_) => else_.to_tokens(tokens),
-                    _ => token::Brace::default().surround(tokens, |tokens| else_.to_tokens(tokens)),
-                }
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprIndex {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.expr.to_tokens(tokens);
-            self.bracket_token.surround(tokens, |tokens| {
-                self.index.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprInfer {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.underscore_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprLet {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.let_token.to_tokens(tokens);
-            self.pat.to_tokens(tokens);
-            self.eq_token.to_tokens(tokens);
-            wrap_bare_struct(tokens, &self.expr);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprLit {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.lit.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprLoop {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.label.to_tokens(tokens);
-            self.loop_token.to_tokens(tokens);
-            self.body.brace_token.surround(tokens, |tokens| {
-                inner_attrs_to_tokens(&self.attrs, tokens);
-                tokens.append_all(&self.body.stmts);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprMacro {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.mac.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprMatch {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.match_token.to_tokens(tokens);
-            wrap_bare_struct(tokens, &self.expr);
-            self.brace_token.surround(tokens, |tokens| {
-                inner_attrs_to_tokens(&self.attrs, tokens);
-                for (i, arm) in self.arms.iter().enumerate() {
-                    arm.to_tokens(tokens);
-                    // Ensure that we have a comma after a non-block arm, except
-                    // for the last one.
-                    let is_last = i == self.arms.len() - 1;
-                    if !is_last && requires_terminator(&arm.body) && arm.comma.is_none() {
-                        <Token![,]>::default().to_tokens(tokens);
-                    }
-                }
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprMethodCall {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.receiver.to_tokens(tokens);
-            self.dot_token.to_tokens(tokens);
-            self.method.to_tokens(tokens);
-            self.turbofish.to_tokens(tokens);
-            self.paren_token.surround(tokens, |tokens| {
-                self.args.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprParen {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.paren_token.surround(tokens, |tokens| {
-                self.expr.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprPath {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            path::printing::print_path(tokens, &self.qself, &self.path);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprRange {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.start.to_tokens(tokens);
-            self.limits.to_tokens(tokens);
-            self.end.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprReference {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.and_token.to_tokens(tokens);
-            self.mutability.to_tokens(tokens);
-            self.expr.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprRepeat {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.bracket_token.surround(tokens, |tokens| {
-                self.expr.to_tokens(tokens);
-                self.semi_token.to_tokens(tokens);
-                self.len.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprReturn {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.return_token.to_tokens(tokens);
-            self.expr.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprStruct {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            path::printing::print_path(tokens, &self.qself, &self.path);
-            self.brace_token.surround(tokens, |tokens| {
-                self.fields.to_tokens(tokens);
-                if let Some(dot2_token) = &self.dot2_token {
-                    dot2_token.to_tokens(tokens);
-                } else if self.rest.is_some() {
-                    Token![..](Span::call_site()).to_tokens(tokens);
-                }
-                self.rest.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprTry {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.expr.to_tokens(tokens);
-            self.question_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprTryBlock {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.try_token.to_tokens(tokens);
-            self.block.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprTuple {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.paren_token.surround(tokens, |tokens| {
-                self.elems.to_tokens(tokens);
-                // If we only have one argument, we need a trailing comma to
-                // distinguish ExprTuple from ExprParen.
-                if self.elems.len() == 1 && !self.elems.trailing_punct() {
-                    <Token![,]>::default().to_tokens(tokens);
-                }
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprUnary {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.op.to_tokens(tokens);
-            self.expr.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprUnsafe {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.unsafe_token.to_tokens(tokens);
-            self.block.brace_token.surround(tokens, |tokens| {
-                inner_attrs_to_tokens(&self.attrs, tokens);
-                tokens.append_all(&self.block.stmts);
-            });
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprWhile {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.label.to_tokens(tokens);
-            self.while_token.to_tokens(tokens);
-            wrap_bare_struct(tokens, &self.cond);
-            self.body.brace_token.surround(tokens, |tokens| {
-                inner_attrs_to_tokens(&self.attrs, tokens);
-                tokens.append_all(&self.body.stmts);
-            });
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ExprYield {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.yield_token.to_tokens(tokens);
-            self.expr.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Arm {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(&self.attrs);
-            self.pat.to_tokens(tokens);
-            if let Some((if_token, guard)) = &self.guard {
-                if_token.to_tokens(tokens);
-                guard.to_tokens(tokens);
-            }
-            self.fat_arrow_token.to_tokens(tokens);
-            self.body.to_tokens(tokens);
-            self.comma.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for FieldValue {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            outer_attrs_to_tokens(&self.attrs, tokens);
-            self.member.to_tokens(tokens);
-            if let Some(colon_token) = &self.colon_token {
-                colon_token.to_tokens(tokens);
-                self.expr.to_tokens(tokens);
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Index {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            let mut lit = Literal::i64_unsuffixed(i64::from(self.index));
-            lit.set_span(self.span);
-            tokens.append(lit);
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Label {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.name.to_tokens(tokens);
-            self.colon_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Member {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            match self {
-                Member::Named(ident) => ident.to_tokens(tokens),
-                Member::Unnamed(index) => index.to_tokens(tokens),
-            }
-        }
-    }
-
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for RangeLimits {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            match self {
-                RangeLimits::HalfOpen(t) => t.to_tokens(tokens),
-                RangeLimits::Closed(t) => t.to_tokens(tokens),
-            }
-        }
-    }
-}
diff --git a/vendor/syn/src/ext.rs b/vendor/syn/src/ext.rs
deleted file mode 100644
index 9ee5672..0000000
--- a/vendor/syn/src/ext.rs
+++ /dev/null
@@ -1,135 +0,0 @@
-//! Extension traits to provide parsing methods on foreign types.
-
-use crate::buffer::Cursor;
-use crate::parse::Peek;
-use crate::parse::{ParseStream, Result};
-use crate::sealed::lookahead;
-use crate::token::CustomToken;
-use proc_macro2::Ident;
-
-/// Additional methods for `Ident` not provided by proc-macro2 or libproc_macro.
-///
-/// This trait is sealed and cannot be implemented for types outside of Syn. It
-/// is implemented only for `proc_macro2::Ident`.
-pub trait IdentExt: Sized + private::Sealed {
-    /// Parses any identifier including keywords.
-    ///
-    /// This is useful when parsing macro input which allows Rust keywords as
-    /// identifiers.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use syn::{Error, Ident, Result, Token};
-    /// use syn::ext::IdentExt;
-    /// use syn::parse::ParseStream;
-    ///
-    /// mod kw {
-    ///     syn::custom_keyword!(name);
-    /// }
-    ///
-    /// // Parses input that looks like `name = NAME` where `NAME` can be
-    /// // any identifier.
-    /// //
-    /// // Examples:
-    /// //
-    /// //     name = anything
-    /// //     name = impl
-    /// fn parse_dsl(input: ParseStream) -> Result<Ident> {
-    ///     input.parse::<kw::name>()?;
-    ///     input.parse::<Token![=]>()?;
-    ///     let name = input.call(Ident::parse_any)?;
-    ///     Ok(name)
-    /// }
-    /// ```
-    fn parse_any(input: ParseStream) -> Result<Self>;
-
-    /// Peeks any identifier including keywords. Usage:
-    /// `input.peek(Ident::peek_any)`
-    ///
-    /// This is different from `input.peek(Ident)` which only returns true in
-    /// the case of an ident which is not a Rust keyword.
-    #[allow(non_upper_case_globals)]
-    const peek_any: private::PeekFn = private::PeekFn;
-
-    /// Strips the raw marker `r#`, if any, from the beginning of an ident.
-    ///
-    ///   - unraw(`x`) = `x`
-    ///   - unraw(`move`) = `move`
-    ///   - unraw(`r#move`) = `move`
-    ///
-    /// # Example
-    ///
-    /// In the case of interop with other languages like Python that have a
-    /// different set of keywords than Rust, we might come across macro input
-    /// that involves raw identifiers to refer to ordinary variables in the
-    /// other language with a name that happens to be a Rust keyword.
-    ///
-    /// The function below appends an identifier from the caller's input onto a
-    /// fixed prefix. Without using `unraw()`, this would tend to produce
-    /// invalid identifiers like `__pyo3_get_r#move`.
-    ///
-    /// ```
-    /// use proc_macro2::Span;
-    /// use syn::Ident;
-    /// use syn::ext::IdentExt;
-    ///
-    /// fn ident_for_getter(variable: &Ident) -> Ident {
-    ///     let getter = format!("__pyo3_get_{}", variable.unraw());
-    ///     Ident::new(&getter, Span::call_site())
-    /// }
-    /// ```
-    fn unraw(&self) -> Ident;
-}
-
-impl IdentExt for Ident {
-    fn parse_any(input: ParseStream) -> Result<Self> {
-        input.step(|cursor| match cursor.ident() {
-            Some((ident, rest)) => Ok((ident, rest)),
-            None => Err(cursor.error("expected ident")),
-        })
-    }
-
-    fn unraw(&self) -> Ident {
-        let string = self.to_string();
-        if let Some(string) = string.strip_prefix("r#") {
-            Ident::new(string, self.span())
-        } else {
-            self.clone()
-        }
-    }
-}
-
-impl Peek for private::PeekFn {
-    type Token = private::IdentAny;
-}
-
-impl CustomToken for private::IdentAny {
-    fn peek(cursor: Cursor) -> bool {
-        cursor.ident().is_some()
-    }
-
-    fn display() -> &'static str {
-        "identifier"
-    }
-}
-
-impl lookahead::Sealed for private::PeekFn {}
-
-mod private {
-    use proc_macro2::Ident;
-
-    pub trait Sealed {}
-
-    impl Sealed for Ident {}
-
-    pub struct PeekFn;
-    pub struct IdentAny;
-
-    impl Copy for PeekFn {}
-    impl Clone for PeekFn {
-        fn clone(&self) -> Self {
-            *self
-        }
-    }
-}
diff --git a/vendor/syn/src/file.rs b/vendor/syn/src/file.rs
deleted file mode 100644
index 2d9f298..0000000
--- a/vendor/syn/src/file.rs
+++ /dev/null
@@ -1,125 +0,0 @@
-use super::*;
-
-ast_struct! {
-    /// A complete file of Rust source code.
-    ///
-    /// Typically `File` objects are created with [`parse_file`].
-    ///
-    /// # Example
-    ///
-    /// Parse a Rust source file into a `syn::File` and print out a debug
-    /// representation of the syntax tree.
-    ///
-    /// ```
-    /// use std::env;
-    /// use std::fs::File;
-    /// use std::io::Read;
-    /// use std::process;
-    ///
-    /// fn main() {
-    /// # }
-    /// #
-    /// # fn fake_main() {
-    ///     let mut args = env::args();
-    ///     let _ = args.next(); // executable name
-    ///
-    ///     let filename = match (args.next(), args.next()) {
-    ///         (Some(filename), None) => filename,
-    ///         _ => {
-    ///             eprintln!("Usage: dump-syntax path/to/filename.rs");
-    ///             process::exit(1);
-    ///         }
-    ///     };
-    ///
-    ///     let mut file = File::open(&filename).expect("Unable to open file");
-    ///
-    ///     let mut src = String::new();
-    ///     file.read_to_string(&mut src).expect("Unable to read file");
-    ///
-    ///     let syntax = syn::parse_file(&src).expect("Unable to parse file");
-    ///
-    ///     // Debug impl is available if Syn is built with "extra-traits" feature.
-    ///     println!("{:#?}", syntax);
-    /// }
-    /// ```
-    ///
-    /// Running with its own source code as input, this program prints output
-    /// that begins with:
-    ///
-    /// ```text
-    /// File {
-    ///     shebang: None,
-    ///     attrs: [],
-    ///     items: [
-    ///         Use(
-    ///             ItemUse {
-    ///                 attrs: [],
-    ///                 vis: Inherited,
-    ///                 use_token: Use,
-    ///                 leading_colon: None,
-    ///                 tree: Path(
-    ///                     UsePath {
-    ///                         ident: Ident(
-    ///                             std,
-    ///                         ),
-    ///                         colon2_token: Colon2,
-    ///                         tree: Name(
-    ///                             UseName {
-    ///                                 ident: Ident(
-    ///                                     env,
-    ///                                 ),
-    ///                             },
-    ///                         ),
-    ///                     },
-    ///                 ),
-    ///                 semi_token: Semi,
-    ///             },
-    ///         ),
-    /// ...
-    /// ```
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct File {
-        pub shebang: Option<String>,
-        pub attrs: Vec<Attribute>,
-        pub items: Vec<Item>,
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::*;
-    use crate::parse::{Parse, ParseStream, Result};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for File {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(File {
-                shebang: None,
-                attrs: input.call(Attribute::parse_inner)?,
-                items: {
-                    let mut items = Vec::new();
-                    while !input.is_empty() {
-                        items.push(input.parse()?);
-                    }
-                    items
-                },
-            })
-        }
-    }
-}
-
-#[cfg(feature = "printing")]
-mod printing {
-    use super::*;
-    use crate::attr::FilterAttrs;
-    use proc_macro2::TokenStream;
-    use quote::{ToTokens, TokenStreamExt};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for File {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.inner());
-            tokens.append_all(&self.items);
-        }
-    }
-}
diff --git a/vendor/syn/src/gen/clone.rs b/vendor/syn/src/gen/clone.rs
deleted file mode 100644
index 9593679..0000000
--- a/vendor/syn/src/gen/clone.rs
+++ /dev/null
@@ -1,2181 +0,0 @@
-// This file is @generated by syn-internal-codegen.
-// It is not intended for manual editing.
-
-#![allow(clippy::clone_on_copy, clippy::expl_impl_clone_on_copy)]
-use crate::*;
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Abi {
-    fn clone(&self) -> Self {
-        Abi {
-            extern_token: self.extern_token.clone(),
-            name: self.name.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for AngleBracketedGenericArguments {
-    fn clone(&self) -> Self {
-        AngleBracketedGenericArguments {
-            colon2_token: self.colon2_token.clone(),
-            lt_token: self.lt_token.clone(),
-            args: self.args.clone(),
-            gt_token: self.gt_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Arm {
-    fn clone(&self) -> Self {
-        Arm {
-            attrs: self.attrs.clone(),
-            pat: self.pat.clone(),
-            guard: self.guard.clone(),
-            fat_arrow_token: self.fat_arrow_token.clone(),
-            body: self.body.clone(),
-            comma: self.comma.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for AssocConst {
-    fn clone(&self) -> Self {
-        AssocConst {
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            eq_token: self.eq_token.clone(),
-            value: self.value.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for AssocType {
-    fn clone(&self) -> Self {
-        AssocType {
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            eq_token: self.eq_token.clone(),
-            ty: self.ty.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Copy for AttrStyle {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for AttrStyle {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Attribute {
-    fn clone(&self) -> Self {
-        Attribute {
-            pound_token: self.pound_token.clone(),
-            style: self.style.clone(),
-            bracket_token: self.bracket_token.clone(),
-            meta: self.meta.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for BareFnArg {
-    fn clone(&self) -> Self {
-        BareFnArg {
-            attrs: self.attrs.clone(),
-            name: self.name.clone(),
-            ty: self.ty.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for BareVariadic {
-    fn clone(&self) -> Self {
-        BareVariadic {
-            attrs: self.attrs.clone(),
-            name: self.name.clone(),
-            dots: self.dots.clone(),
-            comma: self.comma.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Copy for BinOp {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for BinOp {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Block {
-    fn clone(&self) -> Self {
-        Block {
-            brace_token: self.brace_token.clone(),
-            stmts: self.stmts.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for BoundLifetimes {
-    fn clone(&self) -> Self {
-        BoundLifetimes {
-            for_token: self.for_token.clone(),
-            lt_token: self.lt_token.clone(),
-            lifetimes: self.lifetimes.clone(),
-            gt_token: self.gt_token.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ConstParam {
-    fn clone(&self) -> Self {
-        ConstParam {
-            attrs: self.attrs.clone(),
-            const_token: self.const_token.clone(),
-            ident: self.ident.clone(),
-            colon_token: self.colon_token.clone(),
-            ty: self.ty.clone(),
-            eq_token: self.eq_token.clone(),
-            default: self.default.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Constraint {
-    fn clone(&self) -> Self {
-        Constraint {
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            colon_token: self.colon_token.clone(),
-            bounds: self.bounds.clone(),
-        }
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Data {
-    fn clone(&self) -> Self {
-        match self {
-            Data::Struct(v0) => Data::Struct(v0.clone()),
-            Data::Enum(v0) => Data::Enum(v0.clone()),
-            Data::Union(v0) => Data::Union(v0.clone()),
-        }
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for DataEnum {
-    fn clone(&self) -> Self {
-        DataEnum {
-            enum_token: self.enum_token.clone(),
-            brace_token: self.brace_token.clone(),
-            variants: self.variants.clone(),
-        }
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for DataStruct {
-    fn clone(&self) -> Self {
-        DataStruct {
-            struct_token: self.struct_token.clone(),
-            fields: self.fields.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for DataUnion {
-    fn clone(&self) -> Self {
-        DataUnion {
-            union_token: self.union_token.clone(),
-            fields: self.fields.clone(),
-        }
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for DeriveInput {
-    fn clone(&self) -> Self {
-        DeriveInput {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            data: self.data.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Expr {
-    fn clone(&self) -> Self {
-        match self {
-            #[cfg(feature = "full")]
-            Expr::Array(v0) => Expr::Array(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Assign(v0) => Expr::Assign(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Async(v0) => Expr::Async(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Await(v0) => Expr::Await(v0.clone()),
-            Expr::Binary(v0) => Expr::Binary(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Block(v0) => Expr::Block(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Break(v0) => Expr::Break(v0.clone()),
-            Expr::Call(v0) => Expr::Call(v0.clone()),
-            Expr::Cast(v0) => Expr::Cast(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Closure(v0) => Expr::Closure(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Const(v0) => Expr::Const(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Continue(v0) => Expr::Continue(v0.clone()),
-            Expr::Field(v0) => Expr::Field(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::ForLoop(v0) => Expr::ForLoop(v0.clone()),
-            Expr::Group(v0) => Expr::Group(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::If(v0) => Expr::If(v0.clone()),
-            Expr::Index(v0) => Expr::Index(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Infer(v0) => Expr::Infer(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Let(v0) => Expr::Let(v0.clone()),
-            Expr::Lit(v0) => Expr::Lit(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Loop(v0) => Expr::Loop(v0.clone()),
-            Expr::Macro(v0) => Expr::Macro(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Match(v0) => Expr::Match(v0.clone()),
-            Expr::MethodCall(v0) => Expr::MethodCall(v0.clone()),
-            Expr::Paren(v0) => Expr::Paren(v0.clone()),
-            Expr::Path(v0) => Expr::Path(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Range(v0) => Expr::Range(v0.clone()),
-            Expr::Reference(v0) => Expr::Reference(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Repeat(v0) => Expr::Repeat(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Return(v0) => Expr::Return(v0.clone()),
-            Expr::Struct(v0) => Expr::Struct(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Try(v0) => Expr::Try(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::TryBlock(v0) => Expr::TryBlock(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Tuple(v0) => Expr::Tuple(v0.clone()),
-            Expr::Unary(v0) => Expr::Unary(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Unsafe(v0) => Expr::Unsafe(v0.clone()),
-            Expr::Verbatim(v0) => Expr::Verbatim(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::While(v0) => Expr::While(v0.clone()),
-            #[cfg(feature = "full")]
-            Expr::Yield(v0) => Expr::Yield(v0.clone()),
-            #[cfg(not(feature = "full"))]
-            _ => unreachable!(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprArray {
-    fn clone(&self) -> Self {
-        ExprArray {
-            attrs: self.attrs.clone(),
-            bracket_token: self.bracket_token.clone(),
-            elems: self.elems.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprAssign {
-    fn clone(&self) -> Self {
-        ExprAssign {
-            attrs: self.attrs.clone(),
-            left: self.left.clone(),
-            eq_token: self.eq_token.clone(),
-            right: self.right.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprAsync {
-    fn clone(&self) -> Self {
-        ExprAsync {
-            attrs: self.attrs.clone(),
-            async_token: self.async_token.clone(),
-            capture: self.capture.clone(),
-            block: self.block.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprAwait {
-    fn clone(&self) -> Self {
-        ExprAwait {
-            attrs: self.attrs.clone(),
-            base: self.base.clone(),
-            dot_token: self.dot_token.clone(),
-            await_token: self.await_token.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprBinary {
-    fn clone(&self) -> Self {
-        ExprBinary {
-            attrs: self.attrs.clone(),
-            left: self.left.clone(),
-            op: self.op.clone(),
-            right: self.right.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprBlock {
-    fn clone(&self) -> Self {
-        ExprBlock {
-            attrs: self.attrs.clone(),
-            label: self.label.clone(),
-            block: self.block.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprBreak {
-    fn clone(&self) -> Self {
-        ExprBreak {
-            attrs: self.attrs.clone(),
-            break_token: self.break_token.clone(),
-            label: self.label.clone(),
-            expr: self.expr.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprCall {
-    fn clone(&self) -> Self {
-        ExprCall {
-            attrs: self.attrs.clone(),
-            func: self.func.clone(),
-            paren_token: self.paren_token.clone(),
-            args: self.args.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprCast {
-    fn clone(&self) -> Self {
-        ExprCast {
-            attrs: self.attrs.clone(),
-            expr: self.expr.clone(),
-            as_token: self.as_token.clone(),
-            ty: self.ty.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprClosure {
-    fn clone(&self) -> Self {
-        ExprClosure {
-            attrs: self.attrs.clone(),
-            lifetimes: self.lifetimes.clone(),
-            constness: self.constness.clone(),
-            movability: self.movability.clone(),
-            asyncness: self.asyncness.clone(),
-            capture: self.capture.clone(),
-            or1_token: self.or1_token.clone(),
-            inputs: self.inputs.clone(),
-            or2_token: self.or2_token.clone(),
-            output: self.output.clone(),
-            body: self.body.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprConst {
-    fn clone(&self) -> Self {
-        ExprConst {
-            attrs: self.attrs.clone(),
-            const_token: self.const_token.clone(),
-            block: self.block.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprContinue {
-    fn clone(&self) -> Self {
-        ExprContinue {
-            attrs: self.attrs.clone(),
-            continue_token: self.continue_token.clone(),
-            label: self.label.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprField {
-    fn clone(&self) -> Self {
-        ExprField {
-            attrs: self.attrs.clone(),
-            base: self.base.clone(),
-            dot_token: self.dot_token.clone(),
-            member: self.member.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprForLoop {
-    fn clone(&self) -> Self {
-        ExprForLoop {
-            attrs: self.attrs.clone(),
-            label: self.label.clone(),
-            for_token: self.for_token.clone(),
-            pat: self.pat.clone(),
-            in_token: self.in_token.clone(),
-            expr: self.expr.clone(),
-            body: self.body.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprGroup {
-    fn clone(&self) -> Self {
-        ExprGroup {
-            attrs: self.attrs.clone(),
-            group_token: self.group_token.clone(),
-            expr: self.expr.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprIf {
-    fn clone(&self) -> Self {
-        ExprIf {
-            attrs: self.attrs.clone(),
-            if_token: self.if_token.clone(),
-            cond: self.cond.clone(),
-            then_branch: self.then_branch.clone(),
-            else_branch: self.else_branch.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprIndex {
-    fn clone(&self) -> Self {
-        ExprIndex {
-            attrs: self.attrs.clone(),
-            expr: self.expr.clone(),
-            bracket_token: self.bracket_token.clone(),
-            index: self.index.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprInfer {
-    fn clone(&self) -> Self {
-        ExprInfer {
-            attrs: self.attrs.clone(),
-            underscore_token: self.underscore_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprLet {
-    fn clone(&self) -> Self {
-        ExprLet {
-            attrs: self.attrs.clone(),
-            let_token: self.let_token.clone(),
-            pat: self.pat.clone(),
-            eq_token: self.eq_token.clone(),
-            expr: self.expr.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprLit {
-    fn clone(&self) -> Self {
-        ExprLit {
-            attrs: self.attrs.clone(),
-            lit: self.lit.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprLoop {
-    fn clone(&self) -> Self {
-        ExprLoop {
-            attrs: self.attrs.clone(),
-            label: self.label.clone(),
-            loop_token: self.loop_token.clone(),
-            body: self.body.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprMacro {
-    fn clone(&self) -> Self {
-        ExprMacro {
-            attrs: self.attrs.clone(),
-            mac: self.mac.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprMatch {
-    fn clone(&self) -> Self {
-        ExprMatch {
-            attrs: self.attrs.clone(),
-            match_token: self.match_token.clone(),
-            expr: self.expr.clone(),
-            brace_token: self.brace_token.clone(),
-            arms: self.arms.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprMethodCall {
-    fn clone(&self) -> Self {
-        ExprMethodCall {
-            attrs: self.attrs.clone(),
-            receiver: self.receiver.clone(),
-            dot_token: self.dot_token.clone(),
-            method: self.method.clone(),
-            turbofish: self.turbofish.clone(),
-            paren_token: self.paren_token.clone(),
-            args: self.args.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprParen {
-    fn clone(&self) -> Self {
-        ExprParen {
-            attrs: self.attrs.clone(),
-            paren_token: self.paren_token.clone(),
-            expr: self.expr.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprPath {
-    fn clone(&self) -> Self {
-        ExprPath {
-            attrs: self.attrs.clone(),
-            qself: self.qself.clone(),
-            path: self.path.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprRange {
-    fn clone(&self) -> Self {
-        ExprRange {
-            attrs: self.attrs.clone(),
-            start: self.start.clone(),
-            limits: self.limits.clone(),
-            end: self.end.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprReference {
-    fn clone(&self) -> Self {
-        ExprReference {
-            attrs: self.attrs.clone(),
-            and_token: self.and_token.clone(),
-            mutability: self.mutability.clone(),
-            expr: self.expr.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprRepeat {
-    fn clone(&self) -> Self {
-        ExprRepeat {
-            attrs: self.attrs.clone(),
-            bracket_token: self.bracket_token.clone(),
-            expr: self.expr.clone(),
-            semi_token: self.semi_token.clone(),
-            len: self.len.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprReturn {
-    fn clone(&self) -> Self {
-        ExprReturn {
-            attrs: self.attrs.clone(),
-            return_token: self.return_token.clone(),
-            expr: self.expr.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprStruct {
-    fn clone(&self) -> Self {
-        ExprStruct {
-            attrs: self.attrs.clone(),
-            qself: self.qself.clone(),
-            path: self.path.clone(),
-            brace_token: self.brace_token.clone(),
-            fields: self.fields.clone(),
-            dot2_token: self.dot2_token.clone(),
-            rest: self.rest.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprTry {
-    fn clone(&self) -> Self {
-        ExprTry {
-            attrs: self.attrs.clone(),
-            expr: self.expr.clone(),
-            question_token: self.question_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprTryBlock {
-    fn clone(&self) -> Self {
-        ExprTryBlock {
-            attrs: self.attrs.clone(),
-            try_token: self.try_token.clone(),
-            block: self.block.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprTuple {
-    fn clone(&self) -> Self {
-        ExprTuple {
-            attrs: self.attrs.clone(),
-            paren_token: self.paren_token.clone(),
-            elems: self.elems.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprUnary {
-    fn clone(&self) -> Self {
-        ExprUnary {
-            attrs: self.attrs.clone(),
-            op: self.op.clone(),
-            expr: self.expr.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprUnsafe {
-    fn clone(&self) -> Self {
-        ExprUnsafe {
-            attrs: self.attrs.clone(),
-            unsafe_token: self.unsafe_token.clone(),
-            block: self.block.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprWhile {
-    fn clone(&self) -> Self {
-        ExprWhile {
-            attrs: self.attrs.clone(),
-            label: self.label.clone(),
-            while_token: self.while_token.clone(),
-            cond: self.cond.clone(),
-            body: self.body.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ExprYield {
-    fn clone(&self) -> Self {
-        ExprYield {
-            attrs: self.attrs.clone(),
-            yield_token: self.yield_token.clone(),
-            expr: self.expr.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Field {
-    fn clone(&self) -> Self {
-        Field {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            mutability: self.mutability.clone(),
-            ident: self.ident.clone(),
-            colon_token: self.colon_token.clone(),
-            ty: self.ty.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for FieldMutability {
-    fn clone(&self) -> Self {
-        match self {
-            FieldMutability::None => FieldMutability::None,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for FieldPat {
-    fn clone(&self) -> Self {
-        FieldPat {
-            attrs: self.attrs.clone(),
-            member: self.member.clone(),
-            colon_token: self.colon_token.clone(),
-            pat: self.pat.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for FieldValue {
-    fn clone(&self) -> Self {
-        FieldValue {
-            attrs: self.attrs.clone(),
-            member: self.member.clone(),
-            colon_token: self.colon_token.clone(),
-            expr: self.expr.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Fields {
-    fn clone(&self) -> Self {
-        match self {
-            Fields::Named(v0) => Fields::Named(v0.clone()),
-            Fields::Unnamed(v0) => Fields::Unnamed(v0.clone()),
-            Fields::Unit => Fields::Unit,
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for FieldsNamed {
-    fn clone(&self) -> Self {
-        FieldsNamed {
-            brace_token: self.brace_token.clone(),
-            named: self.named.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for FieldsUnnamed {
-    fn clone(&self) -> Self {
-        FieldsUnnamed {
-            paren_token: self.paren_token.clone(),
-            unnamed: self.unnamed.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for File {
-    fn clone(&self) -> Self {
-        File {
-            shebang: self.shebang.clone(),
-            attrs: self.attrs.clone(),
-            items: self.items.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for FnArg {
-    fn clone(&self) -> Self {
-        match self {
-            FnArg::Receiver(v0) => FnArg::Receiver(v0.clone()),
-            FnArg::Typed(v0) => FnArg::Typed(v0.clone()),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ForeignItem {
-    fn clone(&self) -> Self {
-        match self {
-            ForeignItem::Fn(v0) => ForeignItem::Fn(v0.clone()),
-            ForeignItem::Static(v0) => ForeignItem::Static(v0.clone()),
-            ForeignItem::Type(v0) => ForeignItem::Type(v0.clone()),
-            ForeignItem::Macro(v0) => ForeignItem::Macro(v0.clone()),
-            ForeignItem::Verbatim(v0) => ForeignItem::Verbatim(v0.clone()),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ForeignItemFn {
-    fn clone(&self) -> Self {
-        ForeignItemFn {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            sig: self.sig.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ForeignItemMacro {
-    fn clone(&self) -> Self {
-        ForeignItemMacro {
-            attrs: self.attrs.clone(),
-            mac: self.mac.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ForeignItemStatic {
-    fn clone(&self) -> Self {
-        ForeignItemStatic {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            static_token: self.static_token.clone(),
-            mutability: self.mutability.clone(),
-            ident: self.ident.clone(),
-            colon_token: self.colon_token.clone(),
-            ty: self.ty.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ForeignItemType {
-    fn clone(&self) -> Self {
-        ForeignItemType {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            type_token: self.type_token.clone(),
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for GenericArgument {
-    fn clone(&self) -> Self {
-        match self {
-            GenericArgument::Lifetime(v0) => GenericArgument::Lifetime(v0.clone()),
-            GenericArgument::Type(v0) => GenericArgument::Type(v0.clone()),
-            GenericArgument::Const(v0) => GenericArgument::Const(v0.clone()),
-            GenericArgument::AssocType(v0) => GenericArgument::AssocType(v0.clone()),
-            GenericArgument::AssocConst(v0) => GenericArgument::AssocConst(v0.clone()),
-            GenericArgument::Constraint(v0) => GenericArgument::Constraint(v0.clone()),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for GenericParam {
-    fn clone(&self) -> Self {
-        match self {
-            GenericParam::Lifetime(v0) => GenericParam::Lifetime(v0.clone()),
-            GenericParam::Type(v0) => GenericParam::Type(v0.clone()),
-            GenericParam::Const(v0) => GenericParam::Const(v0.clone()),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Generics {
-    fn clone(&self) -> Self {
-        Generics {
-            lt_token: self.lt_token.clone(),
-            params: self.params.clone(),
-            gt_token: self.gt_token.clone(),
-            where_clause: self.where_clause.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ImplItem {
-    fn clone(&self) -> Self {
-        match self {
-            ImplItem::Const(v0) => ImplItem::Const(v0.clone()),
-            ImplItem::Fn(v0) => ImplItem::Fn(v0.clone()),
-            ImplItem::Type(v0) => ImplItem::Type(v0.clone()),
-            ImplItem::Macro(v0) => ImplItem::Macro(v0.clone()),
-            ImplItem::Verbatim(v0) => ImplItem::Verbatim(v0.clone()),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ImplItemConst {
-    fn clone(&self) -> Self {
-        ImplItemConst {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            defaultness: self.defaultness.clone(),
-            const_token: self.const_token.clone(),
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            colon_token: self.colon_token.clone(),
-            ty: self.ty.clone(),
-            eq_token: self.eq_token.clone(),
-            expr: self.expr.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ImplItemFn {
-    fn clone(&self) -> Self {
-        ImplItemFn {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            defaultness: self.defaultness.clone(),
-            sig: self.sig.clone(),
-            block: self.block.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ImplItemMacro {
-    fn clone(&self) -> Self {
-        ImplItemMacro {
-            attrs: self.attrs.clone(),
-            mac: self.mac.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ImplItemType {
-    fn clone(&self) -> Self {
-        ImplItemType {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            defaultness: self.defaultness.clone(),
-            type_token: self.type_token.clone(),
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            eq_token: self.eq_token.clone(),
-            ty: self.ty.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ImplRestriction {
-    fn clone(&self) -> Self {
-        match *self {}
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Index {
-    fn clone(&self) -> Self {
-        Index {
-            index: self.index.clone(),
-            span: self.span.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Item {
-    fn clone(&self) -> Self {
-        match self {
-            Item::Const(v0) => Item::Const(v0.clone()),
-            Item::Enum(v0) => Item::Enum(v0.clone()),
-            Item::ExternCrate(v0) => Item::ExternCrate(v0.clone()),
-            Item::Fn(v0) => Item::Fn(v0.clone()),
-            Item::ForeignMod(v0) => Item::ForeignMod(v0.clone()),
-            Item::Impl(v0) => Item::Impl(v0.clone()),
-            Item::Macro(v0) => Item::Macro(v0.clone()),
-            Item::Mod(v0) => Item::Mod(v0.clone()),
-            Item::Static(v0) => Item::Static(v0.clone()),
-            Item::Struct(v0) => Item::Struct(v0.clone()),
-            Item::Trait(v0) => Item::Trait(v0.clone()),
-            Item::TraitAlias(v0) => Item::TraitAlias(v0.clone()),
-            Item::Type(v0) => Item::Type(v0.clone()),
-            Item::Union(v0) => Item::Union(v0.clone()),
-            Item::Use(v0) => Item::Use(v0.clone()),
-            Item::Verbatim(v0) => Item::Verbatim(v0.clone()),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ItemConst {
-    fn clone(&self) -> Self {
-        ItemConst {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            const_token: self.const_token.clone(),
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            colon_token: self.colon_token.clone(),
-            ty: self.ty.clone(),
-            eq_token: self.eq_token.clone(),
-            expr: self.expr.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ItemEnum {
-    fn clone(&self) -> Self {
-        ItemEnum {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            enum_token: self.enum_token.clone(),
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            brace_token: self.brace_token.clone(),
-            variants: self.variants.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ItemExternCrate {
-    fn clone(&self) -> Self {
-        ItemExternCrate {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            extern_token: self.extern_token.clone(),
-            crate_token: self.crate_token.clone(),
-            ident: self.ident.clone(),
-            rename: self.rename.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ItemFn {
-    fn clone(&self) -> Self {
-        ItemFn {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            sig: self.sig.clone(),
-            block: self.block.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ItemForeignMod {
-    fn clone(&self) -> Self {
-        ItemForeignMod {
-            attrs: self.attrs.clone(),
-            unsafety: self.unsafety.clone(),
-            abi: self.abi.clone(),
-            brace_token: self.brace_token.clone(),
-            items: self.items.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ItemImpl {
-    fn clone(&self) -> Self {
-        ItemImpl {
-            attrs: self.attrs.clone(),
-            defaultness: self.defaultness.clone(),
-            unsafety: self.unsafety.clone(),
-            impl_token: self.impl_token.clone(),
-            generics: self.generics.clone(),
-            trait_: self.trait_.clone(),
-            self_ty: self.self_ty.clone(),
-            brace_token: self.brace_token.clone(),
-            items: self.items.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ItemMacro {
-    fn clone(&self) -> Self {
-        ItemMacro {
-            attrs: self.attrs.clone(),
-            ident: self.ident.clone(),
-            mac: self.mac.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ItemMod {
-    fn clone(&self) -> Self {
-        ItemMod {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            unsafety: self.unsafety.clone(),
-            mod_token: self.mod_token.clone(),
-            ident: self.ident.clone(),
-            content: self.content.clone(),
-            semi: self.semi.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ItemStatic {
-    fn clone(&self) -> Self {
-        ItemStatic {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            static_token: self.static_token.clone(),
-            mutability: self.mutability.clone(),
-            ident: self.ident.clone(),
-            colon_token: self.colon_token.clone(),
-            ty: self.ty.clone(),
-            eq_token: self.eq_token.clone(),
-            expr: self.expr.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ItemStruct {
-    fn clone(&self) -> Self {
-        ItemStruct {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            struct_token: self.struct_token.clone(),
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            fields: self.fields.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ItemTrait {
-    fn clone(&self) -> Self {
-        ItemTrait {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            unsafety: self.unsafety.clone(),
-            auto_token: self.auto_token.clone(),
-            restriction: self.restriction.clone(),
-            trait_token: self.trait_token.clone(),
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            colon_token: self.colon_token.clone(),
-            supertraits: self.supertraits.clone(),
-            brace_token: self.brace_token.clone(),
-            items: self.items.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ItemTraitAlias {
-    fn clone(&self) -> Self {
-        ItemTraitAlias {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            trait_token: self.trait_token.clone(),
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            eq_token: self.eq_token.clone(),
-            bounds: self.bounds.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ItemType {
-    fn clone(&self) -> Self {
-        ItemType {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            type_token: self.type_token.clone(),
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            eq_token: self.eq_token.clone(),
-            ty: self.ty.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ItemUnion {
-    fn clone(&self) -> Self {
-        ItemUnion {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            union_token: self.union_token.clone(),
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            fields: self.fields.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ItemUse {
-    fn clone(&self) -> Self {
-        ItemUse {
-            attrs: self.attrs.clone(),
-            vis: self.vis.clone(),
-            use_token: self.use_token.clone(),
-            leading_colon: self.leading_colon.clone(),
-            tree: self.tree.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Label {
-    fn clone(&self) -> Self {
-        Label {
-            name: self.name.clone(),
-            colon_token: self.colon_token.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for LifetimeParam {
-    fn clone(&self) -> Self {
-        LifetimeParam {
-            attrs: self.attrs.clone(),
-            lifetime: self.lifetime.clone(),
-            colon_token: self.colon_token.clone(),
-            bounds: self.bounds.clone(),
-        }
-    }
-}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Lit {
-    fn clone(&self) -> Self {
-        match self {
-            Lit::Str(v0) => Lit::Str(v0.clone()),
-            Lit::ByteStr(v0) => Lit::ByteStr(v0.clone()),
-            Lit::Byte(v0) => Lit::Byte(v0.clone()),
-            Lit::Char(v0) => Lit::Char(v0.clone()),
-            Lit::Int(v0) => Lit::Int(v0.clone()),
-            Lit::Float(v0) => Lit::Float(v0.clone()),
-            Lit::Bool(v0) => Lit::Bool(v0.clone()),
-            Lit::Verbatim(v0) => Lit::Verbatim(v0.clone()),
-        }
-    }
-}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for LitBool {
-    fn clone(&self) -> Self {
-        LitBool {
-            value: self.value.clone(),
-            span: self.span.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Local {
-    fn clone(&self) -> Self {
-        Local {
-            attrs: self.attrs.clone(),
-            let_token: self.let_token.clone(),
-            pat: self.pat.clone(),
-            init: self.init.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for LocalInit {
-    fn clone(&self) -> Self {
-        LocalInit {
-            eq_token: self.eq_token.clone(),
-            expr: self.expr.clone(),
-            diverge: self.diverge.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Macro {
-    fn clone(&self) -> Self {
-        Macro {
-            path: self.path.clone(),
-            bang_token: self.bang_token.clone(),
-            delimiter: self.delimiter.clone(),
-            tokens: self.tokens.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for MacroDelimiter {
-    fn clone(&self) -> Self {
-        match self {
-            MacroDelimiter::Paren(v0) => MacroDelimiter::Paren(v0.clone()),
-            MacroDelimiter::Brace(v0) => MacroDelimiter::Brace(v0.clone()),
-            MacroDelimiter::Bracket(v0) => MacroDelimiter::Bracket(v0.clone()),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Member {
-    fn clone(&self) -> Self {
-        match self {
-            Member::Named(v0) => Member::Named(v0.clone()),
-            Member::Unnamed(v0) => Member::Unnamed(v0.clone()),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Meta {
-    fn clone(&self) -> Self {
-        match self {
-            Meta::Path(v0) => Meta::Path(v0.clone()),
-            Meta::List(v0) => Meta::List(v0.clone()),
-            Meta::NameValue(v0) => Meta::NameValue(v0.clone()),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for MetaList {
-    fn clone(&self) -> Self {
-        MetaList {
-            path: self.path.clone(),
-            delimiter: self.delimiter.clone(),
-            tokens: self.tokens.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for MetaNameValue {
-    fn clone(&self) -> Self {
-        MetaNameValue {
-            path: self.path.clone(),
-            eq_token: self.eq_token.clone(),
-            value: self.value.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ParenthesizedGenericArguments {
-    fn clone(&self) -> Self {
-        ParenthesizedGenericArguments {
-            paren_token: self.paren_token.clone(),
-            inputs: self.inputs.clone(),
-            output: self.output.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Pat {
-    fn clone(&self) -> Self {
-        match self {
-            Pat::Const(v0) => Pat::Const(v0.clone()),
-            Pat::Ident(v0) => Pat::Ident(v0.clone()),
-            Pat::Lit(v0) => Pat::Lit(v0.clone()),
-            Pat::Macro(v0) => Pat::Macro(v0.clone()),
-            Pat::Or(v0) => Pat::Or(v0.clone()),
-            Pat::Paren(v0) => Pat::Paren(v0.clone()),
-            Pat::Path(v0) => Pat::Path(v0.clone()),
-            Pat::Range(v0) => Pat::Range(v0.clone()),
-            Pat::Reference(v0) => Pat::Reference(v0.clone()),
-            Pat::Rest(v0) => Pat::Rest(v0.clone()),
-            Pat::Slice(v0) => Pat::Slice(v0.clone()),
-            Pat::Struct(v0) => Pat::Struct(v0.clone()),
-            Pat::Tuple(v0) => Pat::Tuple(v0.clone()),
-            Pat::TupleStruct(v0) => Pat::TupleStruct(v0.clone()),
-            Pat::Type(v0) => Pat::Type(v0.clone()),
-            Pat::Verbatim(v0) => Pat::Verbatim(v0.clone()),
-            Pat::Wild(v0) => Pat::Wild(v0.clone()),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for PatIdent {
-    fn clone(&self) -> Self {
-        PatIdent {
-            attrs: self.attrs.clone(),
-            by_ref: self.by_ref.clone(),
-            mutability: self.mutability.clone(),
-            ident: self.ident.clone(),
-            subpat: self.subpat.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for PatOr {
-    fn clone(&self) -> Self {
-        PatOr {
-            attrs: self.attrs.clone(),
-            leading_vert: self.leading_vert.clone(),
-            cases: self.cases.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for PatParen {
-    fn clone(&self) -> Self {
-        PatParen {
-            attrs: self.attrs.clone(),
-            paren_token: self.paren_token.clone(),
-            pat: self.pat.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for PatReference {
-    fn clone(&self) -> Self {
-        PatReference {
-            attrs: self.attrs.clone(),
-            and_token: self.and_token.clone(),
-            mutability: self.mutability.clone(),
-            pat: self.pat.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for PatRest {
-    fn clone(&self) -> Self {
-        PatRest {
-            attrs: self.attrs.clone(),
-            dot2_token: self.dot2_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for PatSlice {
-    fn clone(&self) -> Self {
-        PatSlice {
-            attrs: self.attrs.clone(),
-            bracket_token: self.bracket_token.clone(),
-            elems: self.elems.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for PatStruct {
-    fn clone(&self) -> Self {
-        PatStruct {
-            attrs: self.attrs.clone(),
-            qself: self.qself.clone(),
-            path: self.path.clone(),
-            brace_token: self.brace_token.clone(),
-            fields: self.fields.clone(),
-            rest: self.rest.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for PatTuple {
-    fn clone(&self) -> Self {
-        PatTuple {
-            attrs: self.attrs.clone(),
-            paren_token: self.paren_token.clone(),
-            elems: self.elems.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for PatTupleStruct {
-    fn clone(&self) -> Self {
-        PatTupleStruct {
-            attrs: self.attrs.clone(),
-            qself: self.qself.clone(),
-            path: self.path.clone(),
-            paren_token: self.paren_token.clone(),
-            elems: self.elems.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for PatType {
-    fn clone(&self) -> Self {
-        PatType {
-            attrs: self.attrs.clone(),
-            pat: self.pat.clone(),
-            colon_token: self.colon_token.clone(),
-            ty: self.ty.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for PatWild {
-    fn clone(&self) -> Self {
-        PatWild {
-            attrs: self.attrs.clone(),
-            underscore_token: self.underscore_token.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Path {
-    fn clone(&self) -> Self {
-        Path {
-            leading_colon: self.leading_colon.clone(),
-            segments: self.segments.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for PathArguments {
-    fn clone(&self) -> Self {
-        match self {
-            PathArguments::None => PathArguments::None,
-            PathArguments::AngleBracketed(v0) => {
-                PathArguments::AngleBracketed(v0.clone())
-            }
-            PathArguments::Parenthesized(v0) => PathArguments::Parenthesized(v0.clone()),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for PathSegment {
-    fn clone(&self) -> Self {
-        PathSegment {
-            ident: self.ident.clone(),
-            arguments: self.arguments.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for PredicateLifetime {
-    fn clone(&self) -> Self {
-        PredicateLifetime {
-            lifetime: self.lifetime.clone(),
-            colon_token: self.colon_token.clone(),
-            bounds: self.bounds.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for PredicateType {
-    fn clone(&self) -> Self {
-        PredicateType {
-            lifetimes: self.lifetimes.clone(),
-            bounded_ty: self.bounded_ty.clone(),
-            colon_token: self.colon_token.clone(),
-            bounds: self.bounds.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for QSelf {
-    fn clone(&self) -> Self {
-        QSelf {
-            lt_token: self.lt_token.clone(),
-            ty: self.ty.clone(),
-            position: self.position.clone(),
-            as_token: self.as_token.clone(),
-            gt_token: self.gt_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Copy for RangeLimits {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for RangeLimits {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Receiver {
-    fn clone(&self) -> Self {
-        Receiver {
-            attrs: self.attrs.clone(),
-            reference: self.reference.clone(),
-            mutability: self.mutability.clone(),
-            self_token: self.self_token.clone(),
-            colon_token: self.colon_token.clone(),
-            ty: self.ty.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for ReturnType {
-    fn clone(&self) -> Self {
-        match self {
-            ReturnType::Default => ReturnType::Default,
-            ReturnType::Type(v0, v1) => ReturnType::Type(v0.clone(), v1.clone()),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Signature {
-    fn clone(&self) -> Self {
-        Signature {
-            constness: self.constness.clone(),
-            asyncness: self.asyncness.clone(),
-            unsafety: self.unsafety.clone(),
-            abi: self.abi.clone(),
-            fn_token: self.fn_token.clone(),
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            paren_token: self.paren_token.clone(),
-            inputs: self.inputs.clone(),
-            variadic: self.variadic.clone(),
-            output: self.output.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for StaticMutability {
-    fn clone(&self) -> Self {
-        match self {
-            StaticMutability::Mut(v0) => StaticMutability::Mut(v0.clone()),
-            StaticMutability::None => StaticMutability::None,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Stmt {
-    fn clone(&self) -> Self {
-        match self {
-            Stmt::Local(v0) => Stmt::Local(v0.clone()),
-            Stmt::Item(v0) => Stmt::Item(v0.clone()),
-            Stmt::Expr(v0, v1) => Stmt::Expr(v0.clone(), v1.clone()),
-            Stmt::Macro(v0) => Stmt::Macro(v0.clone()),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for StmtMacro {
-    fn clone(&self) -> Self {
-        StmtMacro {
-            attrs: self.attrs.clone(),
-            mac: self.mac.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TraitBound {
-    fn clone(&self) -> Self {
-        TraitBound {
-            paren_token: self.paren_token.clone(),
-            modifier: self.modifier.clone(),
-            lifetimes: self.lifetimes.clone(),
-            path: self.path.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Copy for TraitBoundModifier {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TraitBoundModifier {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TraitItem {
-    fn clone(&self) -> Self {
-        match self {
-            TraitItem::Const(v0) => TraitItem::Const(v0.clone()),
-            TraitItem::Fn(v0) => TraitItem::Fn(v0.clone()),
-            TraitItem::Type(v0) => TraitItem::Type(v0.clone()),
-            TraitItem::Macro(v0) => TraitItem::Macro(v0.clone()),
-            TraitItem::Verbatim(v0) => TraitItem::Verbatim(v0.clone()),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TraitItemConst {
-    fn clone(&self) -> Self {
-        TraitItemConst {
-            attrs: self.attrs.clone(),
-            const_token: self.const_token.clone(),
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            colon_token: self.colon_token.clone(),
-            ty: self.ty.clone(),
-            default: self.default.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TraitItemFn {
-    fn clone(&self) -> Self {
-        TraitItemFn {
-            attrs: self.attrs.clone(),
-            sig: self.sig.clone(),
-            default: self.default.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TraitItemMacro {
-    fn clone(&self) -> Self {
-        TraitItemMacro {
-            attrs: self.attrs.clone(),
-            mac: self.mac.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TraitItemType {
-    fn clone(&self) -> Self {
-        TraitItemType {
-            attrs: self.attrs.clone(),
-            type_token: self.type_token.clone(),
-            ident: self.ident.clone(),
-            generics: self.generics.clone(),
-            colon_token: self.colon_token.clone(),
-            bounds: self.bounds.clone(),
-            default: self.default.clone(),
-            semi_token: self.semi_token.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Type {
-    fn clone(&self) -> Self {
-        match self {
-            Type::Array(v0) => Type::Array(v0.clone()),
-            Type::BareFn(v0) => Type::BareFn(v0.clone()),
-            Type::Group(v0) => Type::Group(v0.clone()),
-            Type::ImplTrait(v0) => Type::ImplTrait(v0.clone()),
-            Type::Infer(v0) => Type::Infer(v0.clone()),
-            Type::Macro(v0) => Type::Macro(v0.clone()),
-            Type::Never(v0) => Type::Never(v0.clone()),
-            Type::Paren(v0) => Type::Paren(v0.clone()),
-            Type::Path(v0) => Type::Path(v0.clone()),
-            Type::Ptr(v0) => Type::Ptr(v0.clone()),
-            Type::Reference(v0) => Type::Reference(v0.clone()),
-            Type::Slice(v0) => Type::Slice(v0.clone()),
-            Type::TraitObject(v0) => Type::TraitObject(v0.clone()),
-            Type::Tuple(v0) => Type::Tuple(v0.clone()),
-            Type::Verbatim(v0) => Type::Verbatim(v0.clone()),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypeArray {
-    fn clone(&self) -> Self {
-        TypeArray {
-            bracket_token: self.bracket_token.clone(),
-            elem: self.elem.clone(),
-            semi_token: self.semi_token.clone(),
-            len: self.len.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypeBareFn {
-    fn clone(&self) -> Self {
-        TypeBareFn {
-            lifetimes: self.lifetimes.clone(),
-            unsafety: self.unsafety.clone(),
-            abi: self.abi.clone(),
-            fn_token: self.fn_token.clone(),
-            paren_token: self.paren_token.clone(),
-            inputs: self.inputs.clone(),
-            variadic: self.variadic.clone(),
-            output: self.output.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypeGroup {
-    fn clone(&self) -> Self {
-        TypeGroup {
-            group_token: self.group_token.clone(),
-            elem: self.elem.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypeImplTrait {
-    fn clone(&self) -> Self {
-        TypeImplTrait {
-            impl_token: self.impl_token.clone(),
-            bounds: self.bounds.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypeInfer {
-    fn clone(&self) -> Self {
-        TypeInfer {
-            underscore_token: self.underscore_token.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypeMacro {
-    fn clone(&self) -> Self {
-        TypeMacro { mac: self.mac.clone() }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypeNever {
-    fn clone(&self) -> Self {
-        TypeNever {
-            bang_token: self.bang_token.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypeParam {
-    fn clone(&self) -> Self {
-        TypeParam {
-            attrs: self.attrs.clone(),
-            ident: self.ident.clone(),
-            colon_token: self.colon_token.clone(),
-            bounds: self.bounds.clone(),
-            eq_token: self.eq_token.clone(),
-            default: self.default.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypeParamBound {
-    fn clone(&self) -> Self {
-        match self {
-            TypeParamBound::Trait(v0) => TypeParamBound::Trait(v0.clone()),
-            TypeParamBound::Lifetime(v0) => TypeParamBound::Lifetime(v0.clone()),
-            TypeParamBound::Verbatim(v0) => TypeParamBound::Verbatim(v0.clone()),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypeParen {
-    fn clone(&self) -> Self {
-        TypeParen {
-            paren_token: self.paren_token.clone(),
-            elem: self.elem.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypePath {
-    fn clone(&self) -> Self {
-        TypePath {
-            qself: self.qself.clone(),
-            path: self.path.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypePtr {
-    fn clone(&self) -> Self {
-        TypePtr {
-            star_token: self.star_token.clone(),
-            const_token: self.const_token.clone(),
-            mutability: self.mutability.clone(),
-            elem: self.elem.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypeReference {
-    fn clone(&self) -> Self {
-        TypeReference {
-            and_token: self.and_token.clone(),
-            lifetime: self.lifetime.clone(),
-            mutability: self.mutability.clone(),
-            elem: self.elem.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypeSlice {
-    fn clone(&self) -> Self {
-        TypeSlice {
-            bracket_token: self.bracket_token.clone(),
-            elem: self.elem.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypeTraitObject {
-    fn clone(&self) -> Self {
-        TypeTraitObject {
-            dyn_token: self.dyn_token.clone(),
-            bounds: self.bounds.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for TypeTuple {
-    fn clone(&self) -> Self {
-        TypeTuple {
-            paren_token: self.paren_token.clone(),
-            elems: self.elems.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Copy for UnOp {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for UnOp {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for UseGlob {
-    fn clone(&self) -> Self {
-        UseGlob {
-            star_token: self.star_token.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for UseGroup {
-    fn clone(&self) -> Self {
-        UseGroup {
-            brace_token: self.brace_token.clone(),
-            items: self.items.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for UseName {
-    fn clone(&self) -> Self {
-        UseName {
-            ident: self.ident.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for UsePath {
-    fn clone(&self) -> Self {
-        UsePath {
-            ident: self.ident.clone(),
-            colon2_token: self.colon2_token.clone(),
-            tree: self.tree.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for UseRename {
-    fn clone(&self) -> Self {
-        UseRename {
-            ident: self.ident.clone(),
-            as_token: self.as_token.clone(),
-            rename: self.rename.clone(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for UseTree {
-    fn clone(&self) -> Self {
-        match self {
-            UseTree::Path(v0) => UseTree::Path(v0.clone()),
-            UseTree::Name(v0) => UseTree::Name(v0.clone()),
-            UseTree::Rename(v0) => UseTree::Rename(v0.clone()),
-            UseTree::Glob(v0) => UseTree::Glob(v0.clone()),
-            UseTree::Group(v0) => UseTree::Group(v0.clone()),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Variadic {
-    fn clone(&self) -> Self {
-        Variadic {
-            attrs: self.attrs.clone(),
-            pat: self.pat.clone(),
-            dots: self.dots.clone(),
-            comma: self.comma.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Variant {
-    fn clone(&self) -> Self {
-        Variant {
-            attrs: self.attrs.clone(),
-            ident: self.ident.clone(),
-            fields: self.fields.clone(),
-            discriminant: self.discriminant.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for VisRestricted {
-    fn clone(&self) -> Self {
-        VisRestricted {
-            pub_token: self.pub_token.clone(),
-            paren_token: self.paren_token.clone(),
-            in_token: self.in_token.clone(),
-            path: self.path.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Visibility {
-    fn clone(&self) -> Self {
-        match self {
-            Visibility::Public(v0) => Visibility::Public(v0.clone()),
-            Visibility::Restricted(v0) => Visibility::Restricted(v0.clone()),
-            Visibility::Inherited => Visibility::Inherited,
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for WhereClause {
-    fn clone(&self) -> Self {
-        WhereClause {
-            where_token: self.where_token.clone(),
-            predicates: self.predicates.clone(),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for WherePredicate {
-    fn clone(&self) -> Self {
-        match self {
-            WherePredicate::Lifetime(v0) => WherePredicate::Lifetime(v0.clone()),
-            WherePredicate::Type(v0) => WherePredicate::Type(v0.clone()),
-        }
-    }
-}
diff --git a/vendor/syn/src/gen/debug.rs b/vendor/syn/src/gen/debug.rs
deleted file mode 100644
index 553497b..0000000
--- a/vendor/syn/src/gen/debug.rs
+++ /dev/null
@@ -1,3052 +0,0 @@
-// This file is @generated by syn-internal-codegen.
-// It is not intended for manual editing.
-
-use crate::*;
-use std::fmt::{self, Debug};
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Abi {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("Abi");
-        formatter.field("extern_token", &self.extern_token);
-        formatter.field("name", &self.name);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for AngleBracketedGenericArguments {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl AngleBracketedGenericArguments {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("colon2_token", &self.colon2_token);
-                formatter.field("lt_token", &self.lt_token);
-                formatter.field("args", &self.args);
-                formatter.field("gt_token", &self.gt_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "AngleBracketedGenericArguments")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Arm {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("Arm");
-        formatter.field("attrs", &self.attrs);
-        formatter.field("pat", &self.pat);
-        formatter.field("guard", &self.guard);
-        formatter.field("fat_arrow_token", &self.fat_arrow_token);
-        formatter.field("body", &self.body);
-        formatter.field("comma", &self.comma);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for AssocConst {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("AssocConst");
-        formatter.field("ident", &self.ident);
-        formatter.field("generics", &self.generics);
-        formatter.field("eq_token", &self.eq_token);
-        formatter.field("value", &self.value);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for AssocType {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("AssocType");
-        formatter.field("ident", &self.ident);
-        formatter.field("generics", &self.generics);
-        formatter.field("eq_token", &self.eq_token);
-        formatter.field("ty", &self.ty);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for AttrStyle {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("AttrStyle::")?;
-        match self {
-            AttrStyle::Outer => formatter.write_str("Outer"),
-            AttrStyle::Inner(v0) => {
-                let mut formatter = formatter.debug_tuple("Inner");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Attribute {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("Attribute");
-        formatter.field("pound_token", &self.pound_token);
-        formatter.field("style", &self.style);
-        formatter.field("bracket_token", &self.bracket_token);
-        formatter.field("meta", &self.meta);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for BareFnArg {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("BareFnArg");
-        formatter.field("attrs", &self.attrs);
-        formatter.field("name", &self.name);
-        formatter.field("ty", &self.ty);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for BareVariadic {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("BareVariadic");
-        formatter.field("attrs", &self.attrs);
-        formatter.field("name", &self.name);
-        formatter.field("dots", &self.dots);
-        formatter.field("comma", &self.comma);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for BinOp {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("BinOp::")?;
-        match self {
-            BinOp::Add(v0) => {
-                let mut formatter = formatter.debug_tuple("Add");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::Sub(v0) => {
-                let mut formatter = formatter.debug_tuple("Sub");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::Mul(v0) => {
-                let mut formatter = formatter.debug_tuple("Mul");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::Div(v0) => {
-                let mut formatter = formatter.debug_tuple("Div");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::Rem(v0) => {
-                let mut formatter = formatter.debug_tuple("Rem");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::And(v0) => {
-                let mut formatter = formatter.debug_tuple("And");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::Or(v0) => {
-                let mut formatter = formatter.debug_tuple("Or");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::BitXor(v0) => {
-                let mut formatter = formatter.debug_tuple("BitXor");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::BitAnd(v0) => {
-                let mut formatter = formatter.debug_tuple("BitAnd");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::BitOr(v0) => {
-                let mut formatter = formatter.debug_tuple("BitOr");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::Shl(v0) => {
-                let mut formatter = formatter.debug_tuple("Shl");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::Shr(v0) => {
-                let mut formatter = formatter.debug_tuple("Shr");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::Eq(v0) => {
-                let mut formatter = formatter.debug_tuple("Eq");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::Lt(v0) => {
-                let mut formatter = formatter.debug_tuple("Lt");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::Le(v0) => {
-                let mut formatter = formatter.debug_tuple("Le");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::Ne(v0) => {
-                let mut formatter = formatter.debug_tuple("Ne");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::Ge(v0) => {
-                let mut formatter = formatter.debug_tuple("Ge");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::Gt(v0) => {
-                let mut formatter = formatter.debug_tuple("Gt");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::AddAssign(v0) => {
-                let mut formatter = formatter.debug_tuple("AddAssign");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::SubAssign(v0) => {
-                let mut formatter = formatter.debug_tuple("SubAssign");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::MulAssign(v0) => {
-                let mut formatter = formatter.debug_tuple("MulAssign");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::DivAssign(v0) => {
-                let mut formatter = formatter.debug_tuple("DivAssign");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::RemAssign(v0) => {
-                let mut formatter = formatter.debug_tuple("RemAssign");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::BitXorAssign(v0) => {
-                let mut formatter = formatter.debug_tuple("BitXorAssign");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::BitAndAssign(v0) => {
-                let mut formatter = formatter.debug_tuple("BitAndAssign");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::BitOrAssign(v0) => {
-                let mut formatter = formatter.debug_tuple("BitOrAssign");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::ShlAssign(v0) => {
-                let mut formatter = formatter.debug_tuple("ShlAssign");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            BinOp::ShrAssign(v0) => {
-                let mut formatter = formatter.debug_tuple("ShrAssign");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Block {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("Block");
-        formatter.field("brace_token", &self.brace_token);
-        formatter.field("stmts", &self.stmts);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for BoundLifetimes {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("BoundLifetimes");
-        formatter.field("for_token", &self.for_token);
-        formatter.field("lt_token", &self.lt_token);
-        formatter.field("lifetimes", &self.lifetimes);
-        formatter.field("gt_token", &self.gt_token);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ConstParam {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("ConstParam");
-        formatter.field("attrs", &self.attrs);
-        formatter.field("const_token", &self.const_token);
-        formatter.field("ident", &self.ident);
-        formatter.field("colon_token", &self.colon_token);
-        formatter.field("ty", &self.ty);
-        formatter.field("eq_token", &self.eq_token);
-        formatter.field("default", &self.default);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Constraint {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("Constraint");
-        formatter.field("ident", &self.ident);
-        formatter.field("generics", &self.generics);
-        formatter.field("colon_token", &self.colon_token);
-        formatter.field("bounds", &self.bounds);
-        formatter.finish()
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Data {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("Data::")?;
-        match self {
-            Data::Struct(v0) => v0.debug(formatter, "Struct"),
-            Data::Enum(v0) => v0.debug(formatter, "Enum"),
-            Data::Union(v0) => v0.debug(formatter, "Union"),
-        }
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for DataEnum {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl DataEnum {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("enum_token", &self.enum_token);
-                formatter.field("brace_token", &self.brace_token);
-                formatter.field("variants", &self.variants);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "DataEnum")
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for DataStruct {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl DataStruct {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("struct_token", &self.struct_token);
-                formatter.field("fields", &self.fields);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "DataStruct")
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for DataUnion {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl DataUnion {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("union_token", &self.union_token);
-                formatter.field("fields", &self.fields);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "DataUnion")
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for DeriveInput {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("DeriveInput");
-        formatter.field("attrs", &self.attrs);
-        formatter.field("vis", &self.vis);
-        formatter.field("ident", &self.ident);
-        formatter.field("generics", &self.generics);
-        formatter.field("data", &self.data);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Expr {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("Expr::")?;
-        match self {
-            #[cfg(feature = "full")]
-            Expr::Array(v0) => v0.debug(formatter, "Array"),
-            #[cfg(feature = "full")]
-            Expr::Assign(v0) => v0.debug(formatter, "Assign"),
-            #[cfg(feature = "full")]
-            Expr::Async(v0) => v0.debug(formatter, "Async"),
-            #[cfg(feature = "full")]
-            Expr::Await(v0) => v0.debug(formatter, "Await"),
-            Expr::Binary(v0) => v0.debug(formatter, "Binary"),
-            #[cfg(feature = "full")]
-            Expr::Block(v0) => v0.debug(formatter, "Block"),
-            #[cfg(feature = "full")]
-            Expr::Break(v0) => v0.debug(formatter, "Break"),
-            Expr::Call(v0) => v0.debug(formatter, "Call"),
-            Expr::Cast(v0) => v0.debug(formatter, "Cast"),
-            #[cfg(feature = "full")]
-            Expr::Closure(v0) => v0.debug(formatter, "Closure"),
-            #[cfg(feature = "full")]
-            Expr::Const(v0) => v0.debug(formatter, "Const"),
-            #[cfg(feature = "full")]
-            Expr::Continue(v0) => v0.debug(formatter, "Continue"),
-            Expr::Field(v0) => v0.debug(formatter, "Field"),
-            #[cfg(feature = "full")]
-            Expr::ForLoop(v0) => v0.debug(formatter, "ForLoop"),
-            Expr::Group(v0) => v0.debug(formatter, "Group"),
-            #[cfg(feature = "full")]
-            Expr::If(v0) => v0.debug(formatter, "If"),
-            Expr::Index(v0) => v0.debug(formatter, "Index"),
-            #[cfg(feature = "full")]
-            Expr::Infer(v0) => v0.debug(formatter, "Infer"),
-            #[cfg(feature = "full")]
-            Expr::Let(v0) => v0.debug(formatter, "Let"),
-            Expr::Lit(v0) => v0.debug(formatter, "Lit"),
-            #[cfg(feature = "full")]
-            Expr::Loop(v0) => v0.debug(formatter, "Loop"),
-            Expr::Macro(v0) => v0.debug(formatter, "Macro"),
-            #[cfg(feature = "full")]
-            Expr::Match(v0) => v0.debug(formatter, "Match"),
-            Expr::MethodCall(v0) => v0.debug(formatter, "MethodCall"),
-            Expr::Paren(v0) => v0.debug(formatter, "Paren"),
-            Expr::Path(v0) => v0.debug(formatter, "Path"),
-            #[cfg(feature = "full")]
-            Expr::Range(v0) => v0.debug(formatter, "Range"),
-            Expr::Reference(v0) => v0.debug(formatter, "Reference"),
-            #[cfg(feature = "full")]
-            Expr::Repeat(v0) => v0.debug(formatter, "Repeat"),
-            #[cfg(feature = "full")]
-            Expr::Return(v0) => v0.debug(formatter, "Return"),
-            Expr::Struct(v0) => v0.debug(formatter, "Struct"),
-            #[cfg(feature = "full")]
-            Expr::Try(v0) => v0.debug(formatter, "Try"),
-            #[cfg(feature = "full")]
-            Expr::TryBlock(v0) => v0.debug(formatter, "TryBlock"),
-            #[cfg(feature = "full")]
-            Expr::Tuple(v0) => v0.debug(formatter, "Tuple"),
-            Expr::Unary(v0) => v0.debug(formatter, "Unary"),
-            #[cfg(feature = "full")]
-            Expr::Unsafe(v0) => v0.debug(formatter, "Unsafe"),
-            Expr::Verbatim(v0) => {
-                let mut formatter = formatter.debug_tuple("Verbatim");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            #[cfg(feature = "full")]
-            Expr::While(v0) => v0.debug(formatter, "While"),
-            #[cfg(feature = "full")]
-            Expr::Yield(v0) => v0.debug(formatter, "Yield"),
-            #[cfg(not(feature = "full"))]
-            _ => unreachable!(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprArray {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprArray {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("bracket_token", &self.bracket_token);
-                formatter.field("elems", &self.elems);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprArray")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprAssign {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprAssign {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("left", &self.left);
-                formatter.field("eq_token", &self.eq_token);
-                formatter.field("right", &self.right);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprAssign")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprAsync {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprAsync {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("async_token", &self.async_token);
-                formatter.field("capture", &self.capture);
-                formatter.field("block", &self.block);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprAsync")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprAwait {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprAwait {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("base", &self.base);
-                formatter.field("dot_token", &self.dot_token);
-                formatter.field("await_token", &self.await_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprAwait")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprBinary {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprBinary {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("left", &self.left);
-                formatter.field("op", &self.op);
-                formatter.field("right", &self.right);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprBinary")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprBlock {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprBlock {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("label", &self.label);
-                formatter.field("block", &self.block);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprBlock")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprBreak {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprBreak {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("break_token", &self.break_token);
-                formatter.field("label", &self.label);
-                formatter.field("expr", &self.expr);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprBreak")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprCall {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprCall {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("func", &self.func);
-                formatter.field("paren_token", &self.paren_token);
-                formatter.field("args", &self.args);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprCall")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprCast {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprCast {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("expr", &self.expr);
-                formatter.field("as_token", &self.as_token);
-                formatter.field("ty", &self.ty);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprCast")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprClosure {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprClosure {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("lifetimes", &self.lifetimes);
-                formatter.field("constness", &self.constness);
-                formatter.field("movability", &self.movability);
-                formatter.field("asyncness", &self.asyncness);
-                formatter.field("capture", &self.capture);
-                formatter.field("or1_token", &self.or1_token);
-                formatter.field("inputs", &self.inputs);
-                formatter.field("or2_token", &self.or2_token);
-                formatter.field("output", &self.output);
-                formatter.field("body", &self.body);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprClosure")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprConst {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprConst {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("const_token", &self.const_token);
-                formatter.field("block", &self.block);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprConst")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprContinue {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprContinue {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("continue_token", &self.continue_token);
-                formatter.field("label", &self.label);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprContinue")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprField {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprField {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("base", &self.base);
-                formatter.field("dot_token", &self.dot_token);
-                formatter.field("member", &self.member);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprField")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprForLoop {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprForLoop {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("label", &self.label);
-                formatter.field("for_token", &self.for_token);
-                formatter.field("pat", &self.pat);
-                formatter.field("in_token", &self.in_token);
-                formatter.field("expr", &self.expr);
-                formatter.field("body", &self.body);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprForLoop")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprGroup {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprGroup {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("group_token", &self.group_token);
-                formatter.field("expr", &self.expr);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprGroup")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprIf {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprIf {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("if_token", &self.if_token);
-                formatter.field("cond", &self.cond);
-                formatter.field("then_branch", &self.then_branch);
-                formatter.field("else_branch", &self.else_branch);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprIf")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprIndex {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprIndex {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("expr", &self.expr);
-                formatter.field("bracket_token", &self.bracket_token);
-                formatter.field("index", &self.index);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprIndex")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprInfer {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprInfer {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("underscore_token", &self.underscore_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprInfer")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprLet {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprLet {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("let_token", &self.let_token);
-                formatter.field("pat", &self.pat);
-                formatter.field("eq_token", &self.eq_token);
-                formatter.field("expr", &self.expr);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprLet")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprLit {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprLit {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("lit", &self.lit);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprLit")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprLoop {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprLoop {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("label", &self.label);
-                formatter.field("loop_token", &self.loop_token);
-                formatter.field("body", &self.body);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprLoop")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprMacro {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprMacro {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("mac", &self.mac);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprMacro")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprMatch {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprMatch {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("match_token", &self.match_token);
-                formatter.field("expr", &self.expr);
-                formatter.field("brace_token", &self.brace_token);
-                formatter.field("arms", &self.arms);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprMatch")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprMethodCall {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprMethodCall {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("receiver", &self.receiver);
-                formatter.field("dot_token", &self.dot_token);
-                formatter.field("method", &self.method);
-                formatter.field("turbofish", &self.turbofish);
-                formatter.field("paren_token", &self.paren_token);
-                formatter.field("args", &self.args);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprMethodCall")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprParen {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprParen {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("paren_token", &self.paren_token);
-                formatter.field("expr", &self.expr);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprParen")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprPath {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprPath {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("qself", &self.qself);
-                formatter.field("path", &self.path);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprPath")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprRange {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprRange {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("start", &self.start);
-                formatter.field("limits", &self.limits);
-                formatter.field("end", &self.end);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprRange")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprReference {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprReference {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("and_token", &self.and_token);
-                formatter.field("mutability", &self.mutability);
-                formatter.field("expr", &self.expr);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprReference")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprRepeat {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprRepeat {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("bracket_token", &self.bracket_token);
-                formatter.field("expr", &self.expr);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.field("len", &self.len);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprRepeat")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprReturn {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprReturn {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("return_token", &self.return_token);
-                formatter.field("expr", &self.expr);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprReturn")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprStruct {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprStruct {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("qself", &self.qself);
-                formatter.field("path", &self.path);
-                formatter.field("brace_token", &self.brace_token);
-                formatter.field("fields", &self.fields);
-                formatter.field("dot2_token", &self.dot2_token);
-                formatter.field("rest", &self.rest);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprStruct")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprTry {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprTry {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("expr", &self.expr);
-                formatter.field("question_token", &self.question_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprTry")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprTryBlock {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprTryBlock {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("try_token", &self.try_token);
-                formatter.field("block", &self.block);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprTryBlock")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprTuple {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprTuple {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("paren_token", &self.paren_token);
-                formatter.field("elems", &self.elems);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprTuple")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprUnary {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprUnary {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("op", &self.op);
-                formatter.field("expr", &self.expr);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprUnary")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprUnsafe {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprUnsafe {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("unsafe_token", &self.unsafe_token);
-                formatter.field("block", &self.block);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprUnsafe")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprWhile {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprWhile {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("label", &self.label);
-                formatter.field("while_token", &self.while_token);
-                formatter.field("cond", &self.cond);
-                formatter.field("body", &self.body);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprWhile")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ExprYield {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ExprYield {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("yield_token", &self.yield_token);
-                formatter.field("expr", &self.expr);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ExprYield")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Field {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("Field");
-        formatter.field("attrs", &self.attrs);
-        formatter.field("vis", &self.vis);
-        formatter.field("mutability", &self.mutability);
-        formatter.field("ident", &self.ident);
-        formatter.field("colon_token", &self.colon_token);
-        formatter.field("ty", &self.ty);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for FieldMutability {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("FieldMutability::")?;
-        match self {
-            FieldMutability::None => formatter.write_str("None"),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for FieldPat {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("FieldPat");
-        formatter.field("attrs", &self.attrs);
-        formatter.field("member", &self.member);
-        formatter.field("colon_token", &self.colon_token);
-        formatter.field("pat", &self.pat);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for FieldValue {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("FieldValue");
-        formatter.field("attrs", &self.attrs);
-        formatter.field("member", &self.member);
-        formatter.field("colon_token", &self.colon_token);
-        formatter.field("expr", &self.expr);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Fields {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("Fields::")?;
-        match self {
-            Fields::Named(v0) => v0.debug(formatter, "Named"),
-            Fields::Unnamed(v0) => v0.debug(formatter, "Unnamed"),
-            Fields::Unit => formatter.write_str("Unit"),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for FieldsNamed {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl FieldsNamed {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("brace_token", &self.brace_token);
-                formatter.field("named", &self.named);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "FieldsNamed")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for FieldsUnnamed {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl FieldsUnnamed {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("paren_token", &self.paren_token);
-                formatter.field("unnamed", &self.unnamed);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "FieldsUnnamed")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for File {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("File");
-        formatter.field("shebang", &self.shebang);
-        formatter.field("attrs", &self.attrs);
-        formatter.field("items", &self.items);
-        formatter.finish()
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for FnArg {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("FnArg::")?;
-        match self {
-            FnArg::Receiver(v0) => {
-                let mut formatter = formatter.debug_tuple("Receiver");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            FnArg::Typed(v0) => {
-                let mut formatter = formatter.debug_tuple("Typed");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ForeignItem {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("ForeignItem::")?;
-        match self {
-            ForeignItem::Fn(v0) => v0.debug(formatter, "Fn"),
-            ForeignItem::Static(v0) => v0.debug(formatter, "Static"),
-            ForeignItem::Type(v0) => v0.debug(formatter, "Type"),
-            ForeignItem::Macro(v0) => v0.debug(formatter, "Macro"),
-            ForeignItem::Verbatim(v0) => {
-                let mut formatter = formatter.debug_tuple("Verbatim");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ForeignItemFn {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ForeignItemFn {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("sig", &self.sig);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ForeignItemFn")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ForeignItemMacro {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ForeignItemMacro {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("mac", &self.mac);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ForeignItemMacro")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ForeignItemStatic {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ForeignItemStatic {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("static_token", &self.static_token);
-                formatter.field("mutability", &self.mutability);
-                formatter.field("ident", &self.ident);
-                formatter.field("colon_token", &self.colon_token);
-                formatter.field("ty", &self.ty);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ForeignItemStatic")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ForeignItemType {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ForeignItemType {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("type_token", &self.type_token);
-                formatter.field("ident", &self.ident);
-                formatter.field("generics", &self.generics);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ForeignItemType")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for GenericArgument {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("GenericArgument::")?;
-        match self {
-            GenericArgument::Lifetime(v0) => {
-                let mut formatter = formatter.debug_tuple("Lifetime");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            GenericArgument::Type(v0) => {
-                let mut formatter = formatter.debug_tuple("Type");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            GenericArgument::Const(v0) => {
-                let mut formatter = formatter.debug_tuple("Const");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            GenericArgument::AssocType(v0) => {
-                let mut formatter = formatter.debug_tuple("AssocType");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            GenericArgument::AssocConst(v0) => {
-                let mut formatter = formatter.debug_tuple("AssocConst");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            GenericArgument::Constraint(v0) => {
-                let mut formatter = formatter.debug_tuple("Constraint");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for GenericParam {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("GenericParam::")?;
-        match self {
-            GenericParam::Lifetime(v0) => {
-                let mut formatter = formatter.debug_tuple("Lifetime");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            GenericParam::Type(v0) => {
-                let mut formatter = formatter.debug_tuple("Type");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            GenericParam::Const(v0) => {
-                let mut formatter = formatter.debug_tuple("Const");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Generics {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("Generics");
-        formatter.field("lt_token", &self.lt_token);
-        formatter.field("params", &self.params);
-        formatter.field("gt_token", &self.gt_token);
-        formatter.field("where_clause", &self.where_clause);
-        formatter.finish()
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ImplItem {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("ImplItem::")?;
-        match self {
-            ImplItem::Const(v0) => v0.debug(formatter, "Const"),
-            ImplItem::Fn(v0) => v0.debug(formatter, "Fn"),
-            ImplItem::Type(v0) => v0.debug(formatter, "Type"),
-            ImplItem::Macro(v0) => v0.debug(formatter, "Macro"),
-            ImplItem::Verbatim(v0) => {
-                let mut formatter = formatter.debug_tuple("Verbatim");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ImplItemConst {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ImplItemConst {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("defaultness", &self.defaultness);
-                formatter.field("const_token", &self.const_token);
-                formatter.field("ident", &self.ident);
-                formatter.field("generics", &self.generics);
-                formatter.field("colon_token", &self.colon_token);
-                formatter.field("ty", &self.ty);
-                formatter.field("eq_token", &self.eq_token);
-                formatter.field("expr", &self.expr);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ImplItemConst")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ImplItemFn {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ImplItemFn {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("defaultness", &self.defaultness);
-                formatter.field("sig", &self.sig);
-                formatter.field("block", &self.block);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ImplItemFn")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ImplItemMacro {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ImplItemMacro {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("mac", &self.mac);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ImplItemMacro")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ImplItemType {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ImplItemType {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("defaultness", &self.defaultness);
-                formatter.field("type_token", &self.type_token);
-                formatter.field("ident", &self.ident);
-                formatter.field("generics", &self.generics);
-                formatter.field("eq_token", &self.eq_token);
-                formatter.field("ty", &self.ty);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ImplItemType")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ImplRestriction {
-    fn fmt(&self, _formatter: &mut fmt::Formatter) -> fmt::Result {
-        match *self {}
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Index {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("Index");
-        formatter.field("index", &self.index);
-        formatter.field("span", &self.span);
-        formatter.finish()
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Item {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("Item::")?;
-        match self {
-            Item::Const(v0) => v0.debug(formatter, "Const"),
-            Item::Enum(v0) => v0.debug(formatter, "Enum"),
-            Item::ExternCrate(v0) => v0.debug(formatter, "ExternCrate"),
-            Item::Fn(v0) => v0.debug(formatter, "Fn"),
-            Item::ForeignMod(v0) => v0.debug(formatter, "ForeignMod"),
-            Item::Impl(v0) => v0.debug(formatter, "Impl"),
-            Item::Macro(v0) => v0.debug(formatter, "Macro"),
-            Item::Mod(v0) => v0.debug(formatter, "Mod"),
-            Item::Static(v0) => v0.debug(formatter, "Static"),
-            Item::Struct(v0) => v0.debug(formatter, "Struct"),
-            Item::Trait(v0) => v0.debug(formatter, "Trait"),
-            Item::TraitAlias(v0) => v0.debug(formatter, "TraitAlias"),
-            Item::Type(v0) => v0.debug(formatter, "Type"),
-            Item::Union(v0) => v0.debug(formatter, "Union"),
-            Item::Use(v0) => v0.debug(formatter, "Use"),
-            Item::Verbatim(v0) => {
-                let mut formatter = formatter.debug_tuple("Verbatim");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ItemConst {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ItemConst {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("const_token", &self.const_token);
-                formatter.field("ident", &self.ident);
-                formatter.field("generics", &self.generics);
-                formatter.field("colon_token", &self.colon_token);
-                formatter.field("ty", &self.ty);
-                formatter.field("eq_token", &self.eq_token);
-                formatter.field("expr", &self.expr);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ItemConst")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ItemEnum {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ItemEnum {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("enum_token", &self.enum_token);
-                formatter.field("ident", &self.ident);
-                formatter.field("generics", &self.generics);
-                formatter.field("brace_token", &self.brace_token);
-                formatter.field("variants", &self.variants);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ItemEnum")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ItemExternCrate {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ItemExternCrate {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("extern_token", &self.extern_token);
-                formatter.field("crate_token", &self.crate_token);
-                formatter.field("ident", &self.ident);
-                formatter.field("rename", &self.rename);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ItemExternCrate")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ItemFn {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ItemFn {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("sig", &self.sig);
-                formatter.field("block", &self.block);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ItemFn")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ItemForeignMod {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ItemForeignMod {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("unsafety", &self.unsafety);
-                formatter.field("abi", &self.abi);
-                formatter.field("brace_token", &self.brace_token);
-                formatter.field("items", &self.items);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ItemForeignMod")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ItemImpl {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ItemImpl {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("defaultness", &self.defaultness);
-                formatter.field("unsafety", &self.unsafety);
-                formatter.field("impl_token", &self.impl_token);
-                formatter.field("generics", &self.generics);
-                formatter.field("trait_", &self.trait_);
-                formatter.field("self_ty", &self.self_ty);
-                formatter.field("brace_token", &self.brace_token);
-                formatter.field("items", &self.items);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ItemImpl")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ItemMacro {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ItemMacro {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("ident", &self.ident);
-                formatter.field("mac", &self.mac);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ItemMacro")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ItemMod {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ItemMod {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("unsafety", &self.unsafety);
-                formatter.field("mod_token", &self.mod_token);
-                formatter.field("ident", &self.ident);
-                formatter.field("content", &self.content);
-                formatter.field("semi", &self.semi);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ItemMod")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ItemStatic {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ItemStatic {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("static_token", &self.static_token);
-                formatter.field("mutability", &self.mutability);
-                formatter.field("ident", &self.ident);
-                formatter.field("colon_token", &self.colon_token);
-                formatter.field("ty", &self.ty);
-                formatter.field("eq_token", &self.eq_token);
-                formatter.field("expr", &self.expr);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ItemStatic")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ItemStruct {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ItemStruct {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("struct_token", &self.struct_token);
-                formatter.field("ident", &self.ident);
-                formatter.field("generics", &self.generics);
-                formatter.field("fields", &self.fields);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ItemStruct")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ItemTrait {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ItemTrait {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("unsafety", &self.unsafety);
-                formatter.field("auto_token", &self.auto_token);
-                formatter.field("restriction", &self.restriction);
-                formatter.field("trait_token", &self.trait_token);
-                formatter.field("ident", &self.ident);
-                formatter.field("generics", &self.generics);
-                formatter.field("colon_token", &self.colon_token);
-                formatter.field("supertraits", &self.supertraits);
-                formatter.field("brace_token", &self.brace_token);
-                formatter.field("items", &self.items);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ItemTrait")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ItemTraitAlias {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ItemTraitAlias {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("trait_token", &self.trait_token);
-                formatter.field("ident", &self.ident);
-                formatter.field("generics", &self.generics);
-                formatter.field("eq_token", &self.eq_token);
-                formatter.field("bounds", &self.bounds);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ItemTraitAlias")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ItemType {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ItemType {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("type_token", &self.type_token);
-                formatter.field("ident", &self.ident);
-                formatter.field("generics", &self.generics);
-                formatter.field("eq_token", &self.eq_token);
-                formatter.field("ty", &self.ty);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ItemType")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ItemUnion {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ItemUnion {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("union_token", &self.union_token);
-                formatter.field("ident", &self.ident);
-                formatter.field("generics", &self.generics);
-                formatter.field("fields", &self.fields);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ItemUnion")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ItemUse {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ItemUse {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("vis", &self.vis);
-                formatter.field("use_token", &self.use_token);
-                formatter.field("leading_colon", &self.leading_colon);
-                formatter.field("tree", &self.tree);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ItemUse")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Label {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("Label");
-        formatter.field("name", &self.name);
-        formatter.field("colon_token", &self.colon_token);
-        formatter.finish()
-    }
-}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Lifetime {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl Lifetime {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("apostrophe", &self.apostrophe);
-                formatter.field("ident", &self.ident);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "Lifetime")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for LifetimeParam {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("LifetimeParam");
-        formatter.field("attrs", &self.attrs);
-        formatter.field("lifetime", &self.lifetime);
-        formatter.field("colon_token", &self.colon_token);
-        formatter.field("bounds", &self.bounds);
-        formatter.finish()
-    }
-}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Lit {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("Lit::")?;
-        match self {
-            Lit::Str(v0) => v0.debug(formatter, "Str"),
-            Lit::ByteStr(v0) => v0.debug(formatter, "ByteStr"),
-            Lit::Byte(v0) => v0.debug(formatter, "Byte"),
-            Lit::Char(v0) => v0.debug(formatter, "Char"),
-            Lit::Int(v0) => v0.debug(formatter, "Int"),
-            Lit::Float(v0) => v0.debug(formatter, "Float"),
-            Lit::Bool(v0) => v0.debug(formatter, "Bool"),
-            Lit::Verbatim(v0) => {
-                let mut formatter = formatter.debug_tuple("Verbatim");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Local {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl Local {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("let_token", &self.let_token);
-                formatter.field("pat", &self.pat);
-                formatter.field("init", &self.init);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "Local")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for LocalInit {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("LocalInit");
-        formatter.field("eq_token", &self.eq_token);
-        formatter.field("expr", &self.expr);
-        formatter.field("diverge", &self.diverge);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Macro {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("Macro");
-        formatter.field("path", &self.path);
-        formatter.field("bang_token", &self.bang_token);
-        formatter.field("delimiter", &self.delimiter);
-        formatter.field("tokens", &self.tokens);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for MacroDelimiter {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("MacroDelimiter::")?;
-        match self {
-            MacroDelimiter::Paren(v0) => {
-                let mut formatter = formatter.debug_tuple("Paren");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            MacroDelimiter::Brace(v0) => {
-                let mut formatter = formatter.debug_tuple("Brace");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            MacroDelimiter::Bracket(v0) => {
-                let mut formatter = formatter.debug_tuple("Bracket");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Member {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("Member::")?;
-        match self {
-            Member::Named(v0) => {
-                let mut formatter = formatter.debug_tuple("Named");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            Member::Unnamed(v0) => {
-                let mut formatter = formatter.debug_tuple("Unnamed");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Meta {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("Meta::")?;
-        match self {
-            Meta::Path(v0) => v0.debug(formatter, "Path"),
-            Meta::List(v0) => v0.debug(formatter, "List"),
-            Meta::NameValue(v0) => v0.debug(formatter, "NameValue"),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for MetaList {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl MetaList {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("path", &self.path);
-                formatter.field("delimiter", &self.delimiter);
-                formatter.field("tokens", &self.tokens);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "MetaList")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for MetaNameValue {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl MetaNameValue {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("path", &self.path);
-                formatter.field("eq_token", &self.eq_token);
-                formatter.field("value", &self.value);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "MetaNameValue")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ParenthesizedGenericArguments {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl ParenthesizedGenericArguments {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("paren_token", &self.paren_token);
-                formatter.field("inputs", &self.inputs);
-                formatter.field("output", &self.output);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "ParenthesizedGenericArguments")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Pat {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("Pat::")?;
-        match self {
-            Pat::Const(v0) => v0.debug(formatter, "Const"),
-            Pat::Ident(v0) => v0.debug(formatter, "Ident"),
-            Pat::Lit(v0) => v0.debug(formatter, "Lit"),
-            Pat::Macro(v0) => v0.debug(formatter, "Macro"),
-            Pat::Or(v0) => v0.debug(formatter, "Or"),
-            Pat::Paren(v0) => v0.debug(formatter, "Paren"),
-            Pat::Path(v0) => v0.debug(formatter, "Path"),
-            Pat::Range(v0) => v0.debug(formatter, "Range"),
-            Pat::Reference(v0) => v0.debug(formatter, "Reference"),
-            Pat::Rest(v0) => v0.debug(formatter, "Rest"),
-            Pat::Slice(v0) => v0.debug(formatter, "Slice"),
-            Pat::Struct(v0) => v0.debug(formatter, "Struct"),
-            Pat::Tuple(v0) => v0.debug(formatter, "Tuple"),
-            Pat::TupleStruct(v0) => v0.debug(formatter, "TupleStruct"),
-            Pat::Type(v0) => v0.debug(formatter, "Type"),
-            Pat::Verbatim(v0) => {
-                let mut formatter = formatter.debug_tuple("Verbatim");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            Pat::Wild(v0) => v0.debug(formatter, "Wild"),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for PatIdent {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl PatIdent {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("by_ref", &self.by_ref);
-                formatter.field("mutability", &self.mutability);
-                formatter.field("ident", &self.ident);
-                formatter.field("subpat", &self.subpat);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "PatIdent")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for PatOr {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl PatOr {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("leading_vert", &self.leading_vert);
-                formatter.field("cases", &self.cases);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "PatOr")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for PatParen {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl PatParen {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("paren_token", &self.paren_token);
-                formatter.field("pat", &self.pat);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "PatParen")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for PatReference {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl PatReference {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("and_token", &self.and_token);
-                formatter.field("mutability", &self.mutability);
-                formatter.field("pat", &self.pat);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "PatReference")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for PatRest {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl PatRest {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("dot2_token", &self.dot2_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "PatRest")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for PatSlice {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl PatSlice {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("bracket_token", &self.bracket_token);
-                formatter.field("elems", &self.elems);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "PatSlice")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for PatStruct {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl PatStruct {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("qself", &self.qself);
-                formatter.field("path", &self.path);
-                formatter.field("brace_token", &self.brace_token);
-                formatter.field("fields", &self.fields);
-                formatter.field("rest", &self.rest);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "PatStruct")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for PatTuple {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl PatTuple {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("paren_token", &self.paren_token);
-                formatter.field("elems", &self.elems);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "PatTuple")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for PatTupleStruct {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl PatTupleStruct {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("qself", &self.qself);
-                formatter.field("path", &self.path);
-                formatter.field("paren_token", &self.paren_token);
-                formatter.field("elems", &self.elems);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "PatTupleStruct")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for PatType {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl PatType {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("pat", &self.pat);
-                formatter.field("colon_token", &self.colon_token);
-                formatter.field("ty", &self.ty);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "PatType")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for PatWild {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl PatWild {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("underscore_token", &self.underscore_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "PatWild")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Path {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl Path {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("leading_colon", &self.leading_colon);
-                formatter.field("segments", &self.segments);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "Path")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for PathArguments {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("PathArguments::")?;
-        match self {
-            PathArguments::None => formatter.write_str("None"),
-            PathArguments::AngleBracketed(v0) => v0.debug(formatter, "AngleBracketed"),
-            PathArguments::Parenthesized(v0) => v0.debug(formatter, "Parenthesized"),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for PathSegment {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("PathSegment");
-        formatter.field("ident", &self.ident);
-        formatter.field("arguments", &self.arguments);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for PredicateLifetime {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("PredicateLifetime");
-        formatter.field("lifetime", &self.lifetime);
-        formatter.field("colon_token", &self.colon_token);
-        formatter.field("bounds", &self.bounds);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for PredicateType {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("PredicateType");
-        formatter.field("lifetimes", &self.lifetimes);
-        formatter.field("bounded_ty", &self.bounded_ty);
-        formatter.field("colon_token", &self.colon_token);
-        formatter.field("bounds", &self.bounds);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for QSelf {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("QSelf");
-        formatter.field("lt_token", &self.lt_token);
-        formatter.field("ty", &self.ty);
-        formatter.field("position", &self.position);
-        formatter.field("as_token", &self.as_token);
-        formatter.field("gt_token", &self.gt_token);
-        formatter.finish()
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for RangeLimits {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("RangeLimits::")?;
-        match self {
-            RangeLimits::HalfOpen(v0) => {
-                let mut formatter = formatter.debug_tuple("HalfOpen");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            RangeLimits::Closed(v0) => {
-                let mut formatter = formatter.debug_tuple("Closed");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Receiver {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("Receiver");
-        formatter.field("attrs", &self.attrs);
-        formatter.field("reference", &self.reference);
-        formatter.field("mutability", &self.mutability);
-        formatter.field("self_token", &self.self_token);
-        formatter.field("colon_token", &self.colon_token);
-        formatter.field("ty", &self.ty);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for ReturnType {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("ReturnType::")?;
-        match self {
-            ReturnType::Default => formatter.write_str("Default"),
-            ReturnType::Type(v0, v1) => {
-                let mut formatter = formatter.debug_tuple("Type");
-                formatter.field(v0);
-                formatter.field(v1);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Signature {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("Signature");
-        formatter.field("constness", &self.constness);
-        formatter.field("asyncness", &self.asyncness);
-        formatter.field("unsafety", &self.unsafety);
-        formatter.field("abi", &self.abi);
-        formatter.field("fn_token", &self.fn_token);
-        formatter.field("ident", &self.ident);
-        formatter.field("generics", &self.generics);
-        formatter.field("paren_token", &self.paren_token);
-        formatter.field("inputs", &self.inputs);
-        formatter.field("variadic", &self.variadic);
-        formatter.field("output", &self.output);
-        formatter.finish()
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for StaticMutability {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("StaticMutability::")?;
-        match self {
-            StaticMutability::Mut(v0) => {
-                let mut formatter = formatter.debug_tuple("Mut");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            StaticMutability::None => formatter.write_str("None"),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Stmt {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("Stmt::")?;
-        match self {
-            Stmt::Local(v0) => v0.debug(formatter, "Local"),
-            Stmt::Item(v0) => {
-                let mut formatter = formatter.debug_tuple("Item");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            Stmt::Expr(v0, v1) => {
-                let mut formatter = formatter.debug_tuple("Expr");
-                formatter.field(v0);
-                formatter.field(v1);
-                formatter.finish()
-            }
-            Stmt::Macro(v0) => v0.debug(formatter, "Macro"),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for StmtMacro {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl StmtMacro {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("mac", &self.mac);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "StmtMacro")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TraitBound {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("TraitBound");
-        formatter.field("paren_token", &self.paren_token);
-        formatter.field("modifier", &self.modifier);
-        formatter.field("lifetimes", &self.lifetimes);
-        formatter.field("path", &self.path);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TraitBoundModifier {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("TraitBoundModifier::")?;
-        match self {
-            TraitBoundModifier::None => formatter.write_str("None"),
-            TraitBoundModifier::Maybe(v0) => {
-                let mut formatter = formatter.debug_tuple("Maybe");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TraitItem {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("TraitItem::")?;
-        match self {
-            TraitItem::Const(v0) => v0.debug(formatter, "Const"),
-            TraitItem::Fn(v0) => v0.debug(formatter, "Fn"),
-            TraitItem::Type(v0) => v0.debug(formatter, "Type"),
-            TraitItem::Macro(v0) => v0.debug(formatter, "Macro"),
-            TraitItem::Verbatim(v0) => {
-                let mut formatter = formatter.debug_tuple("Verbatim");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TraitItemConst {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TraitItemConst {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("const_token", &self.const_token);
-                formatter.field("ident", &self.ident);
-                formatter.field("generics", &self.generics);
-                formatter.field("colon_token", &self.colon_token);
-                formatter.field("ty", &self.ty);
-                formatter.field("default", &self.default);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TraitItemConst")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TraitItemFn {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TraitItemFn {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("sig", &self.sig);
-                formatter.field("default", &self.default);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TraitItemFn")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TraitItemMacro {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TraitItemMacro {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("mac", &self.mac);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TraitItemMacro")
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TraitItemType {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TraitItemType {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("attrs", &self.attrs);
-                formatter.field("type_token", &self.type_token);
-                formatter.field("ident", &self.ident);
-                formatter.field("generics", &self.generics);
-                formatter.field("colon_token", &self.colon_token);
-                formatter.field("bounds", &self.bounds);
-                formatter.field("default", &self.default);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TraitItemType")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Type {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("Type::")?;
-        match self {
-            Type::Array(v0) => v0.debug(formatter, "Array"),
-            Type::BareFn(v0) => v0.debug(formatter, "BareFn"),
-            Type::Group(v0) => v0.debug(formatter, "Group"),
-            Type::ImplTrait(v0) => v0.debug(formatter, "ImplTrait"),
-            Type::Infer(v0) => v0.debug(formatter, "Infer"),
-            Type::Macro(v0) => v0.debug(formatter, "Macro"),
-            Type::Never(v0) => v0.debug(formatter, "Never"),
-            Type::Paren(v0) => v0.debug(formatter, "Paren"),
-            Type::Path(v0) => v0.debug(formatter, "Path"),
-            Type::Ptr(v0) => v0.debug(formatter, "Ptr"),
-            Type::Reference(v0) => v0.debug(formatter, "Reference"),
-            Type::Slice(v0) => v0.debug(formatter, "Slice"),
-            Type::TraitObject(v0) => v0.debug(formatter, "TraitObject"),
-            Type::Tuple(v0) => v0.debug(formatter, "Tuple"),
-            Type::Verbatim(v0) => {
-                let mut formatter = formatter.debug_tuple("Verbatim");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypeArray {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TypeArray {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("bracket_token", &self.bracket_token);
-                formatter.field("elem", &self.elem);
-                formatter.field("semi_token", &self.semi_token);
-                formatter.field("len", &self.len);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TypeArray")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypeBareFn {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TypeBareFn {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("lifetimes", &self.lifetimes);
-                formatter.field("unsafety", &self.unsafety);
-                formatter.field("abi", &self.abi);
-                formatter.field("fn_token", &self.fn_token);
-                formatter.field("paren_token", &self.paren_token);
-                formatter.field("inputs", &self.inputs);
-                formatter.field("variadic", &self.variadic);
-                formatter.field("output", &self.output);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TypeBareFn")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypeGroup {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TypeGroup {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("group_token", &self.group_token);
-                formatter.field("elem", &self.elem);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TypeGroup")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypeImplTrait {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TypeImplTrait {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("impl_token", &self.impl_token);
-                formatter.field("bounds", &self.bounds);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TypeImplTrait")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypeInfer {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TypeInfer {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("underscore_token", &self.underscore_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TypeInfer")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypeMacro {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TypeMacro {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("mac", &self.mac);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TypeMacro")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypeNever {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TypeNever {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("bang_token", &self.bang_token);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TypeNever")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypeParam {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("TypeParam");
-        formatter.field("attrs", &self.attrs);
-        formatter.field("ident", &self.ident);
-        formatter.field("colon_token", &self.colon_token);
-        formatter.field("bounds", &self.bounds);
-        formatter.field("eq_token", &self.eq_token);
-        formatter.field("default", &self.default);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypeParamBound {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("TypeParamBound::")?;
-        match self {
-            TypeParamBound::Trait(v0) => {
-                let mut formatter = formatter.debug_tuple("Trait");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            TypeParamBound::Lifetime(v0) => v0.debug(formatter, "Lifetime"),
-            TypeParamBound::Verbatim(v0) => {
-                let mut formatter = formatter.debug_tuple("Verbatim");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypeParen {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TypeParen {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("paren_token", &self.paren_token);
-                formatter.field("elem", &self.elem);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TypeParen")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypePath {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TypePath {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("qself", &self.qself);
-                formatter.field("path", &self.path);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TypePath")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypePtr {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TypePtr {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("star_token", &self.star_token);
-                formatter.field("const_token", &self.const_token);
-                formatter.field("mutability", &self.mutability);
-                formatter.field("elem", &self.elem);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TypePtr")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypeReference {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TypeReference {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("and_token", &self.and_token);
-                formatter.field("lifetime", &self.lifetime);
-                formatter.field("mutability", &self.mutability);
-                formatter.field("elem", &self.elem);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TypeReference")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypeSlice {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TypeSlice {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("bracket_token", &self.bracket_token);
-                formatter.field("elem", &self.elem);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TypeSlice")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypeTraitObject {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TypeTraitObject {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("dyn_token", &self.dyn_token);
-                formatter.field("bounds", &self.bounds);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TypeTraitObject")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for TypeTuple {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl TypeTuple {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("paren_token", &self.paren_token);
-                formatter.field("elems", &self.elems);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "TypeTuple")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for UnOp {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("UnOp::")?;
-        match self {
-            UnOp::Deref(v0) => {
-                let mut formatter = formatter.debug_tuple("Deref");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            UnOp::Not(v0) => {
-                let mut formatter = formatter.debug_tuple("Not");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            UnOp::Neg(v0) => {
-                let mut formatter = formatter.debug_tuple("Neg");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for UseGlob {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("UseGlob");
-        formatter.field("star_token", &self.star_token);
-        formatter.finish()
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for UseGroup {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("UseGroup");
-        formatter.field("brace_token", &self.brace_token);
-        formatter.field("items", &self.items);
-        formatter.finish()
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for UseName {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("UseName");
-        formatter.field("ident", &self.ident);
-        formatter.finish()
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for UsePath {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("UsePath");
-        formatter.field("ident", &self.ident);
-        formatter.field("colon2_token", &self.colon2_token);
-        formatter.field("tree", &self.tree);
-        formatter.finish()
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for UseRename {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("UseRename");
-        formatter.field("ident", &self.ident);
-        formatter.field("as_token", &self.as_token);
-        formatter.field("rename", &self.rename);
-        formatter.finish()
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for UseTree {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("UseTree::")?;
-        match self {
-            UseTree::Path(v0) => {
-                let mut formatter = formatter.debug_tuple("Path");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            UseTree::Name(v0) => {
-                let mut formatter = formatter.debug_tuple("Name");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            UseTree::Rename(v0) => {
-                let mut formatter = formatter.debug_tuple("Rename");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            UseTree::Glob(v0) => {
-                let mut formatter = formatter.debug_tuple("Glob");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            UseTree::Group(v0) => {
-                let mut formatter = formatter.debug_tuple("Group");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Variadic {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("Variadic");
-        formatter.field("attrs", &self.attrs);
-        formatter.field("pat", &self.pat);
-        formatter.field("dots", &self.dots);
-        formatter.field("comma", &self.comma);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Variant {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("Variant");
-        formatter.field("attrs", &self.attrs);
-        formatter.field("ident", &self.ident);
-        formatter.field("fields", &self.fields);
-        formatter.field("discriminant", &self.discriminant);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for VisRestricted {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        impl VisRestricted {
-            fn debug(&self, formatter: &mut fmt::Formatter, name: &str) -> fmt::Result {
-                let mut formatter = formatter.debug_struct(name);
-                formatter.field("pub_token", &self.pub_token);
-                formatter.field("paren_token", &self.paren_token);
-                formatter.field("in_token", &self.in_token);
-                formatter.field("path", &self.path);
-                formatter.finish()
-            }
-        }
-        self.debug(formatter, "VisRestricted")
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Visibility {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("Visibility::")?;
-        match self {
-            Visibility::Public(v0) => {
-                let mut formatter = formatter.debug_tuple("Public");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            Visibility::Restricted(v0) => v0.debug(formatter, "Restricted"),
-            Visibility::Inherited => formatter.write_str("Inherited"),
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for WhereClause {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        let mut formatter = formatter.debug_struct("WhereClause");
-        formatter.field("where_token", &self.where_token);
-        formatter.field("predicates", &self.predicates);
-        formatter.finish()
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for WherePredicate {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("WherePredicate::")?;
-        match self {
-            WherePredicate::Lifetime(v0) => {
-                let mut formatter = formatter.debug_tuple("Lifetime");
-                formatter.field(v0);
-                formatter.finish()
-            }
-            WherePredicate::Type(v0) => {
-                let mut formatter = formatter.debug_tuple("Type");
-                formatter.field(v0);
-                formatter.finish()
-            }
-        }
-    }
-}
diff --git a/vendor/syn/src/gen/eq.rs b/vendor/syn/src/gen/eq.rs
deleted file mode 100644
index a1fb3b4..0000000
--- a/vendor/syn/src/gen/eq.rs
+++ /dev/null
@@ -1,2148 +0,0 @@
-// This file is @generated by syn-internal-codegen.
-// It is not intended for manual editing.
-
-#[cfg(any(feature = "derive", feature = "full"))]
-use crate::tt::TokenStreamHelper;
-use crate::*;
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Abi {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Abi {
-    fn eq(&self, other: &Self) -> bool {
-        self.name == other.name
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for AngleBracketedGenericArguments {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for AngleBracketedGenericArguments {
-    fn eq(&self, other: &Self) -> bool {
-        self.colon2_token == other.colon2_token && self.args == other.args
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Arm {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Arm {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.pat == other.pat && self.guard == other.guard
-            && self.body == other.body && self.comma == other.comma
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for AssocConst {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for AssocConst {
-    fn eq(&self, other: &Self) -> bool {
-        self.ident == other.ident && self.generics == other.generics
-            && self.value == other.value
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for AssocType {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for AssocType {
-    fn eq(&self, other: &Self) -> bool {
-        self.ident == other.ident && self.generics == other.generics
-            && self.ty == other.ty
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for AttrStyle {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for AttrStyle {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (AttrStyle::Outer, AttrStyle::Outer) => true,
-            (AttrStyle::Inner(_), AttrStyle::Inner(_)) => true,
-            _ => false,
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Attribute {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Attribute {
-    fn eq(&self, other: &Self) -> bool {
-        self.style == other.style && self.meta == other.meta
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for BareFnArg {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for BareFnArg {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.name == other.name && self.ty == other.ty
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for BareVariadic {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for BareVariadic {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.name == other.name && self.comma == other.comma
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for BinOp {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for BinOp {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (BinOp::Add(_), BinOp::Add(_)) => true,
-            (BinOp::Sub(_), BinOp::Sub(_)) => true,
-            (BinOp::Mul(_), BinOp::Mul(_)) => true,
-            (BinOp::Div(_), BinOp::Div(_)) => true,
-            (BinOp::Rem(_), BinOp::Rem(_)) => true,
-            (BinOp::And(_), BinOp::And(_)) => true,
-            (BinOp::Or(_), BinOp::Or(_)) => true,
-            (BinOp::BitXor(_), BinOp::BitXor(_)) => true,
-            (BinOp::BitAnd(_), BinOp::BitAnd(_)) => true,
-            (BinOp::BitOr(_), BinOp::BitOr(_)) => true,
-            (BinOp::Shl(_), BinOp::Shl(_)) => true,
-            (BinOp::Shr(_), BinOp::Shr(_)) => true,
-            (BinOp::Eq(_), BinOp::Eq(_)) => true,
-            (BinOp::Lt(_), BinOp::Lt(_)) => true,
-            (BinOp::Le(_), BinOp::Le(_)) => true,
-            (BinOp::Ne(_), BinOp::Ne(_)) => true,
-            (BinOp::Ge(_), BinOp::Ge(_)) => true,
-            (BinOp::Gt(_), BinOp::Gt(_)) => true,
-            (BinOp::AddAssign(_), BinOp::AddAssign(_)) => true,
-            (BinOp::SubAssign(_), BinOp::SubAssign(_)) => true,
-            (BinOp::MulAssign(_), BinOp::MulAssign(_)) => true,
-            (BinOp::DivAssign(_), BinOp::DivAssign(_)) => true,
-            (BinOp::RemAssign(_), BinOp::RemAssign(_)) => true,
-            (BinOp::BitXorAssign(_), BinOp::BitXorAssign(_)) => true,
-            (BinOp::BitAndAssign(_), BinOp::BitAndAssign(_)) => true,
-            (BinOp::BitOrAssign(_), BinOp::BitOrAssign(_)) => true,
-            (BinOp::ShlAssign(_), BinOp::ShlAssign(_)) => true,
-            (BinOp::ShrAssign(_), BinOp::ShrAssign(_)) => true,
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Block {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Block {
-    fn eq(&self, other: &Self) -> bool {
-        self.stmts == other.stmts
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for BoundLifetimes {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for BoundLifetimes {
-    fn eq(&self, other: &Self) -> bool {
-        self.lifetimes == other.lifetimes
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ConstParam {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ConstParam {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.ident == other.ident && self.ty == other.ty
-            && self.eq_token == other.eq_token && self.default == other.default
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Constraint {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Constraint {
-    fn eq(&self, other: &Self) -> bool {
-        self.ident == other.ident && self.generics == other.generics
-            && self.bounds == other.bounds
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Data {}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Data {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (Data::Struct(self0), Data::Struct(other0)) => self0 == other0,
-            (Data::Enum(self0), Data::Enum(other0)) => self0 == other0,
-            (Data::Union(self0), Data::Union(other0)) => self0 == other0,
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for DataEnum {}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for DataEnum {
-    fn eq(&self, other: &Self) -> bool {
-        self.variants == other.variants
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for DataStruct {}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for DataStruct {
-    fn eq(&self, other: &Self) -> bool {
-        self.fields == other.fields && self.semi_token == other.semi_token
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for DataUnion {}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for DataUnion {
-    fn eq(&self, other: &Self) -> bool {
-        self.fields == other.fields
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for DeriveInput {}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for DeriveInput {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis && self.ident == other.ident
-            && self.generics == other.generics && self.data == other.data
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Expr {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Expr {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            #[cfg(feature = "full")]
-            (Expr::Array(self0), Expr::Array(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Assign(self0), Expr::Assign(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Async(self0), Expr::Async(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Await(self0), Expr::Await(other0)) => self0 == other0,
-            (Expr::Binary(self0), Expr::Binary(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Block(self0), Expr::Block(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Break(self0), Expr::Break(other0)) => self0 == other0,
-            (Expr::Call(self0), Expr::Call(other0)) => self0 == other0,
-            (Expr::Cast(self0), Expr::Cast(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Closure(self0), Expr::Closure(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Const(self0), Expr::Const(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Continue(self0), Expr::Continue(other0)) => self0 == other0,
-            (Expr::Field(self0), Expr::Field(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::ForLoop(self0), Expr::ForLoop(other0)) => self0 == other0,
-            (Expr::Group(self0), Expr::Group(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::If(self0), Expr::If(other0)) => self0 == other0,
-            (Expr::Index(self0), Expr::Index(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Infer(self0), Expr::Infer(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Let(self0), Expr::Let(other0)) => self0 == other0,
-            (Expr::Lit(self0), Expr::Lit(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Loop(self0), Expr::Loop(other0)) => self0 == other0,
-            (Expr::Macro(self0), Expr::Macro(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Match(self0), Expr::Match(other0)) => self0 == other0,
-            (Expr::MethodCall(self0), Expr::MethodCall(other0)) => self0 == other0,
-            (Expr::Paren(self0), Expr::Paren(other0)) => self0 == other0,
-            (Expr::Path(self0), Expr::Path(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Range(self0), Expr::Range(other0)) => self0 == other0,
-            (Expr::Reference(self0), Expr::Reference(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Repeat(self0), Expr::Repeat(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Return(self0), Expr::Return(other0)) => self0 == other0,
-            (Expr::Struct(self0), Expr::Struct(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Try(self0), Expr::Try(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::TryBlock(self0), Expr::TryBlock(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Tuple(self0), Expr::Tuple(other0)) => self0 == other0,
-            (Expr::Unary(self0), Expr::Unary(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Unsafe(self0), Expr::Unsafe(other0)) => self0 == other0,
-            (Expr::Verbatim(self0), Expr::Verbatim(other0)) => {
-                TokenStreamHelper(self0) == TokenStreamHelper(other0)
-            }
-            #[cfg(feature = "full")]
-            (Expr::While(self0), Expr::While(other0)) => self0 == other0,
-            #[cfg(feature = "full")]
-            (Expr::Yield(self0), Expr::Yield(other0)) => self0 == other0,
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprArray {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprArray {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.elems == other.elems
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprAssign {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprAssign {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.left == other.left && self.right == other.right
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprAsync {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprAsync {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.capture == other.capture
-            && self.block == other.block
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprAwait {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprAwait {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.base == other.base
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprBinary {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprBinary {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.left == other.left && self.op == other.op
-            && self.right == other.right
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprBlock {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprBlock {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.label == other.label
-            && self.block == other.block
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprBreak {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprBreak {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.label == other.label && self.expr == other.expr
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprCall {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprCall {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.func == other.func && self.args == other.args
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprCast {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprCast {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.expr == other.expr && self.ty == other.ty
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprClosure {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprClosure {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.lifetimes == other.lifetimes
-            && self.constness == other.constness && self.movability == other.movability
-            && self.asyncness == other.asyncness && self.capture == other.capture
-            && self.inputs == other.inputs && self.output == other.output
-            && self.body == other.body
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprConst {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprConst {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.block == other.block
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprContinue {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprContinue {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.label == other.label
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprField {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprField {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.base == other.base
-            && self.member == other.member
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprForLoop {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprForLoop {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.label == other.label && self.pat == other.pat
-            && self.expr == other.expr && self.body == other.body
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprGroup {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprGroup {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.expr == other.expr
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprIf {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprIf {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.cond == other.cond
-            && self.then_branch == other.then_branch
-            && self.else_branch == other.else_branch
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprIndex {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprIndex {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.expr == other.expr && self.index == other.index
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprInfer {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprInfer {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprLet {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprLet {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.pat == other.pat && self.expr == other.expr
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprLit {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprLit {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.lit == other.lit
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprLoop {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprLoop {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.label == other.label && self.body == other.body
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprMacro {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprMacro {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.mac == other.mac
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprMatch {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprMatch {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.expr == other.expr && self.arms == other.arms
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprMethodCall {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprMethodCall {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.receiver == other.receiver
-            && self.method == other.method && self.turbofish == other.turbofish
-            && self.args == other.args
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprParen {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprParen {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.expr == other.expr
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprPath {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprPath {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.qself == other.qself && self.path == other.path
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprRange {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprRange {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.start == other.start
-            && self.limits == other.limits && self.end == other.end
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprReference {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprReference {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.mutability == other.mutability
-            && self.expr == other.expr
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprRepeat {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprRepeat {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.expr == other.expr && self.len == other.len
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprReturn {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprReturn {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.expr == other.expr
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprStruct {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprStruct {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.qself == other.qself && self.path == other.path
-            && self.fields == other.fields && self.dot2_token == other.dot2_token
-            && self.rest == other.rest
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprTry {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprTry {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.expr == other.expr
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprTryBlock {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprTryBlock {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.block == other.block
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprTuple {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprTuple {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.elems == other.elems
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprUnary {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprUnary {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.op == other.op && self.expr == other.expr
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprUnsafe {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprUnsafe {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.block == other.block
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprWhile {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprWhile {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.label == other.label && self.cond == other.cond
-            && self.body == other.body
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ExprYield {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ExprYield {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.expr == other.expr
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Field {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Field {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis
-            && self.mutability == other.mutability && self.ident == other.ident
-            && self.colon_token == other.colon_token && self.ty == other.ty
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for FieldMutability {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for FieldMutability {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (FieldMutability::None, FieldMutability::None) => true,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for FieldPat {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for FieldPat {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.member == other.member
-            && self.colon_token == other.colon_token && self.pat == other.pat
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for FieldValue {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for FieldValue {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.member == other.member
-            && self.colon_token == other.colon_token && self.expr == other.expr
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Fields {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Fields {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (Fields::Named(self0), Fields::Named(other0)) => self0 == other0,
-            (Fields::Unnamed(self0), Fields::Unnamed(other0)) => self0 == other0,
-            (Fields::Unit, Fields::Unit) => true,
-            _ => false,
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for FieldsNamed {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for FieldsNamed {
-    fn eq(&self, other: &Self) -> bool {
-        self.named == other.named
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for FieldsUnnamed {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for FieldsUnnamed {
-    fn eq(&self, other: &Self) -> bool {
-        self.unnamed == other.unnamed
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for File {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for File {
-    fn eq(&self, other: &Self) -> bool {
-        self.shebang == other.shebang && self.attrs == other.attrs
-            && self.items == other.items
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for FnArg {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for FnArg {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (FnArg::Receiver(self0), FnArg::Receiver(other0)) => self0 == other0,
-            (FnArg::Typed(self0), FnArg::Typed(other0)) => self0 == other0,
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ForeignItem {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ForeignItem {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (ForeignItem::Fn(self0), ForeignItem::Fn(other0)) => self0 == other0,
-            (ForeignItem::Static(self0), ForeignItem::Static(other0)) => self0 == other0,
-            (ForeignItem::Type(self0), ForeignItem::Type(other0)) => self0 == other0,
-            (ForeignItem::Macro(self0), ForeignItem::Macro(other0)) => self0 == other0,
-            (ForeignItem::Verbatim(self0), ForeignItem::Verbatim(other0)) => {
-                TokenStreamHelper(self0) == TokenStreamHelper(other0)
-            }
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ForeignItemFn {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ForeignItemFn {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis && self.sig == other.sig
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ForeignItemMacro {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ForeignItemMacro {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.mac == other.mac
-            && self.semi_token == other.semi_token
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ForeignItemStatic {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ForeignItemStatic {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis
-            && self.mutability == other.mutability && self.ident == other.ident
-            && self.ty == other.ty
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ForeignItemType {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ForeignItemType {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis && self.ident == other.ident
-            && self.generics == other.generics
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for GenericArgument {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for GenericArgument {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (GenericArgument::Lifetime(self0), GenericArgument::Lifetime(other0)) => {
-                self0 == other0
-            }
-            (GenericArgument::Type(self0), GenericArgument::Type(other0)) => {
-                self0 == other0
-            }
-            (GenericArgument::Const(self0), GenericArgument::Const(other0)) => {
-                self0 == other0
-            }
-            (GenericArgument::AssocType(self0), GenericArgument::AssocType(other0)) => {
-                self0 == other0
-            }
-            (GenericArgument::AssocConst(self0), GenericArgument::AssocConst(other0)) => {
-                self0 == other0
-            }
-            (GenericArgument::Constraint(self0), GenericArgument::Constraint(other0)) => {
-                self0 == other0
-            }
-            _ => false,
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for GenericParam {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for GenericParam {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (GenericParam::Lifetime(self0), GenericParam::Lifetime(other0)) => {
-                self0 == other0
-            }
-            (GenericParam::Type(self0), GenericParam::Type(other0)) => self0 == other0,
-            (GenericParam::Const(self0), GenericParam::Const(other0)) => self0 == other0,
-            _ => false,
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Generics {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Generics {
-    fn eq(&self, other: &Self) -> bool {
-        self.lt_token == other.lt_token && self.params == other.params
-            && self.gt_token == other.gt_token && self.where_clause == other.where_clause
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ImplItem {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ImplItem {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (ImplItem::Const(self0), ImplItem::Const(other0)) => self0 == other0,
-            (ImplItem::Fn(self0), ImplItem::Fn(other0)) => self0 == other0,
-            (ImplItem::Type(self0), ImplItem::Type(other0)) => self0 == other0,
-            (ImplItem::Macro(self0), ImplItem::Macro(other0)) => self0 == other0,
-            (ImplItem::Verbatim(self0), ImplItem::Verbatim(other0)) => {
-                TokenStreamHelper(self0) == TokenStreamHelper(other0)
-            }
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ImplItemConst {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ImplItemConst {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis
-            && self.defaultness == other.defaultness && self.ident == other.ident
-            && self.generics == other.generics && self.ty == other.ty
-            && self.expr == other.expr
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ImplItemFn {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ImplItemFn {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis
-            && self.defaultness == other.defaultness && self.sig == other.sig
-            && self.block == other.block
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ImplItemMacro {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ImplItemMacro {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.mac == other.mac
-            && self.semi_token == other.semi_token
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ImplItemType {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ImplItemType {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis
-            && self.defaultness == other.defaultness && self.ident == other.ident
-            && self.generics == other.generics && self.ty == other.ty
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ImplRestriction {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ImplRestriction {
-    fn eq(&self, _other: &Self) -> bool {
-        match *self {}
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Item {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Item {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (Item::Const(self0), Item::Const(other0)) => self0 == other0,
-            (Item::Enum(self0), Item::Enum(other0)) => self0 == other0,
-            (Item::ExternCrate(self0), Item::ExternCrate(other0)) => self0 == other0,
-            (Item::Fn(self0), Item::Fn(other0)) => self0 == other0,
-            (Item::ForeignMod(self0), Item::ForeignMod(other0)) => self0 == other0,
-            (Item::Impl(self0), Item::Impl(other0)) => self0 == other0,
-            (Item::Macro(self0), Item::Macro(other0)) => self0 == other0,
-            (Item::Mod(self0), Item::Mod(other0)) => self0 == other0,
-            (Item::Static(self0), Item::Static(other0)) => self0 == other0,
-            (Item::Struct(self0), Item::Struct(other0)) => self0 == other0,
-            (Item::Trait(self0), Item::Trait(other0)) => self0 == other0,
-            (Item::TraitAlias(self0), Item::TraitAlias(other0)) => self0 == other0,
-            (Item::Type(self0), Item::Type(other0)) => self0 == other0,
-            (Item::Union(self0), Item::Union(other0)) => self0 == other0,
-            (Item::Use(self0), Item::Use(other0)) => self0 == other0,
-            (Item::Verbatim(self0), Item::Verbatim(other0)) => {
-                TokenStreamHelper(self0) == TokenStreamHelper(other0)
-            }
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ItemConst {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ItemConst {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis && self.ident == other.ident
-            && self.generics == other.generics && self.ty == other.ty
-            && self.expr == other.expr
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ItemEnum {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ItemEnum {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis && self.ident == other.ident
-            && self.generics == other.generics && self.variants == other.variants
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ItemExternCrate {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ItemExternCrate {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis && self.ident == other.ident
-            && self.rename == other.rename
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ItemFn {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ItemFn {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis && self.sig == other.sig
-            && self.block == other.block
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ItemForeignMod {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ItemForeignMod {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.unsafety == other.unsafety
-            && self.abi == other.abi && self.items == other.items
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ItemImpl {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ItemImpl {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.defaultness == other.defaultness
-            && self.unsafety == other.unsafety && self.generics == other.generics
-            && self.trait_ == other.trait_ && self.self_ty == other.self_ty
-            && self.items == other.items
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ItemMacro {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ItemMacro {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.ident == other.ident && self.mac == other.mac
-            && self.semi_token == other.semi_token
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ItemMod {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ItemMod {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis
-            && self.unsafety == other.unsafety && self.ident == other.ident
-            && self.content == other.content && self.semi == other.semi
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ItemStatic {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ItemStatic {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis
-            && self.mutability == other.mutability && self.ident == other.ident
-            && self.ty == other.ty && self.expr == other.expr
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ItemStruct {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ItemStruct {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis && self.ident == other.ident
-            && self.generics == other.generics && self.fields == other.fields
-            && self.semi_token == other.semi_token
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ItemTrait {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ItemTrait {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis
-            && self.unsafety == other.unsafety && self.auto_token == other.auto_token
-            && self.restriction == other.restriction && self.ident == other.ident
-            && self.generics == other.generics && self.colon_token == other.colon_token
-            && self.supertraits == other.supertraits && self.items == other.items
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ItemTraitAlias {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ItemTraitAlias {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis && self.ident == other.ident
-            && self.generics == other.generics && self.bounds == other.bounds
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ItemType {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ItemType {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis && self.ident == other.ident
-            && self.generics == other.generics && self.ty == other.ty
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ItemUnion {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ItemUnion {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis && self.ident == other.ident
-            && self.generics == other.generics && self.fields == other.fields
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ItemUse {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ItemUse {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.vis == other.vis
-            && self.leading_colon == other.leading_colon && self.tree == other.tree
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Label {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Label {
-    fn eq(&self, other: &Self) -> bool {
-        self.name == other.name
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for LifetimeParam {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for LifetimeParam {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.lifetime == other.lifetime
-            && self.colon_token == other.colon_token && self.bounds == other.bounds
-    }
-}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Lit {}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Lit {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (Lit::Str(self0), Lit::Str(other0)) => self0 == other0,
-            (Lit::ByteStr(self0), Lit::ByteStr(other0)) => self0 == other0,
-            (Lit::Byte(self0), Lit::Byte(other0)) => self0 == other0,
-            (Lit::Char(self0), Lit::Char(other0)) => self0 == other0,
-            (Lit::Int(self0), Lit::Int(other0)) => self0 == other0,
-            (Lit::Float(self0), Lit::Float(other0)) => self0 == other0,
-            (Lit::Bool(self0), Lit::Bool(other0)) => self0 == other0,
-            (Lit::Verbatim(self0), Lit::Verbatim(other0)) => {
-                self0.to_string() == other0.to_string()
-            }
-            _ => false,
-        }
-    }
-}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for LitBool {}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for LitBool {
-    fn eq(&self, other: &Self) -> bool {
-        self.value == other.value
-    }
-}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for LitByte {}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for LitByteStr {}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for LitChar {}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for LitFloat {}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for LitInt {}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for LitStr {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Local {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Local {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.pat == other.pat && self.init == other.init
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for LocalInit {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for LocalInit {
-    fn eq(&self, other: &Self) -> bool {
-        self.expr == other.expr && self.diverge == other.diverge
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Macro {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Macro {
-    fn eq(&self, other: &Self) -> bool {
-        self.path == other.path && self.delimiter == other.delimiter
-            && TokenStreamHelper(&self.tokens) == TokenStreamHelper(&other.tokens)
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for MacroDelimiter {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for MacroDelimiter {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (MacroDelimiter::Paren(_), MacroDelimiter::Paren(_)) => true,
-            (MacroDelimiter::Brace(_), MacroDelimiter::Brace(_)) => true,
-            (MacroDelimiter::Bracket(_), MacroDelimiter::Bracket(_)) => true,
-            _ => false,
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Meta {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Meta {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (Meta::Path(self0), Meta::Path(other0)) => self0 == other0,
-            (Meta::List(self0), Meta::List(other0)) => self0 == other0,
-            (Meta::NameValue(self0), Meta::NameValue(other0)) => self0 == other0,
-            _ => false,
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for MetaList {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for MetaList {
-    fn eq(&self, other: &Self) -> bool {
-        self.path == other.path && self.delimiter == other.delimiter
-            && TokenStreamHelper(&self.tokens) == TokenStreamHelper(&other.tokens)
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for MetaNameValue {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for MetaNameValue {
-    fn eq(&self, other: &Self) -> bool {
-        self.path == other.path && self.value == other.value
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ParenthesizedGenericArguments {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ParenthesizedGenericArguments {
-    fn eq(&self, other: &Self) -> bool {
-        self.inputs == other.inputs && self.output == other.output
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Pat {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Pat {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (Pat::Const(self0), Pat::Const(other0)) => self0 == other0,
-            (Pat::Ident(self0), Pat::Ident(other0)) => self0 == other0,
-            (Pat::Lit(self0), Pat::Lit(other0)) => self0 == other0,
-            (Pat::Macro(self0), Pat::Macro(other0)) => self0 == other0,
-            (Pat::Or(self0), Pat::Or(other0)) => self0 == other0,
-            (Pat::Paren(self0), Pat::Paren(other0)) => self0 == other0,
-            (Pat::Path(self0), Pat::Path(other0)) => self0 == other0,
-            (Pat::Range(self0), Pat::Range(other0)) => self0 == other0,
-            (Pat::Reference(self0), Pat::Reference(other0)) => self0 == other0,
-            (Pat::Rest(self0), Pat::Rest(other0)) => self0 == other0,
-            (Pat::Slice(self0), Pat::Slice(other0)) => self0 == other0,
-            (Pat::Struct(self0), Pat::Struct(other0)) => self0 == other0,
-            (Pat::Tuple(self0), Pat::Tuple(other0)) => self0 == other0,
-            (Pat::TupleStruct(self0), Pat::TupleStruct(other0)) => self0 == other0,
-            (Pat::Type(self0), Pat::Type(other0)) => self0 == other0,
-            (Pat::Verbatim(self0), Pat::Verbatim(other0)) => {
-                TokenStreamHelper(self0) == TokenStreamHelper(other0)
-            }
-            (Pat::Wild(self0), Pat::Wild(other0)) => self0 == other0,
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for PatIdent {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for PatIdent {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.by_ref == other.by_ref
-            && self.mutability == other.mutability && self.ident == other.ident
-            && self.subpat == other.subpat
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for PatOr {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for PatOr {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.leading_vert == other.leading_vert
-            && self.cases == other.cases
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for PatParen {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for PatParen {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.pat == other.pat
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for PatReference {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for PatReference {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.mutability == other.mutability
-            && self.pat == other.pat
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for PatRest {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for PatRest {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for PatSlice {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for PatSlice {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.elems == other.elems
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for PatStruct {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for PatStruct {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.qself == other.qself && self.path == other.path
-            && self.fields == other.fields && self.rest == other.rest
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for PatTuple {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for PatTuple {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.elems == other.elems
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for PatTupleStruct {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for PatTupleStruct {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.qself == other.qself && self.path == other.path
-            && self.elems == other.elems
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for PatType {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for PatType {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.pat == other.pat && self.ty == other.ty
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for PatWild {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for PatWild {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Path {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Path {
-    fn eq(&self, other: &Self) -> bool {
-        self.leading_colon == other.leading_colon && self.segments == other.segments
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for PathArguments {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for PathArguments {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (PathArguments::None, PathArguments::None) => true,
-            (
-                PathArguments::AngleBracketed(self0),
-                PathArguments::AngleBracketed(other0),
-            ) => self0 == other0,
-            (
-                PathArguments::Parenthesized(self0),
-                PathArguments::Parenthesized(other0),
-            ) => self0 == other0,
-            _ => false,
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for PathSegment {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for PathSegment {
-    fn eq(&self, other: &Self) -> bool {
-        self.ident == other.ident && self.arguments == other.arguments
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for PredicateLifetime {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for PredicateLifetime {
-    fn eq(&self, other: &Self) -> bool {
-        self.lifetime == other.lifetime && self.bounds == other.bounds
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for PredicateType {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for PredicateType {
-    fn eq(&self, other: &Self) -> bool {
-        self.lifetimes == other.lifetimes && self.bounded_ty == other.bounded_ty
-            && self.bounds == other.bounds
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for QSelf {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for QSelf {
-    fn eq(&self, other: &Self) -> bool {
-        self.ty == other.ty && self.position == other.position
-            && self.as_token == other.as_token
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for RangeLimits {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for RangeLimits {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (RangeLimits::HalfOpen(_), RangeLimits::HalfOpen(_)) => true,
-            (RangeLimits::Closed(_), RangeLimits::Closed(_)) => true,
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Receiver {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Receiver {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.reference == other.reference
-            && self.mutability == other.mutability
-            && self.colon_token == other.colon_token && self.ty == other.ty
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for ReturnType {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for ReturnType {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (ReturnType::Default, ReturnType::Default) => true,
-            (ReturnType::Type(_, self1), ReturnType::Type(_, other1)) => self1 == other1,
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Signature {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Signature {
-    fn eq(&self, other: &Self) -> bool {
-        self.constness == other.constness && self.asyncness == other.asyncness
-            && self.unsafety == other.unsafety && self.abi == other.abi
-            && self.ident == other.ident && self.generics == other.generics
-            && self.inputs == other.inputs && self.variadic == other.variadic
-            && self.output == other.output
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for StaticMutability {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for StaticMutability {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (StaticMutability::Mut(_), StaticMutability::Mut(_)) => true,
-            (StaticMutability::None, StaticMutability::None) => true,
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Stmt {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Stmt {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (Stmt::Local(self0), Stmt::Local(other0)) => self0 == other0,
-            (Stmt::Item(self0), Stmt::Item(other0)) => self0 == other0,
-            (Stmt::Expr(self0, self1), Stmt::Expr(other0, other1)) => {
-                self0 == other0 && self1 == other1
-            }
-            (Stmt::Macro(self0), Stmt::Macro(other0)) => self0 == other0,
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for StmtMacro {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for StmtMacro {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.mac == other.mac
-            && self.semi_token == other.semi_token
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TraitBound {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TraitBound {
-    fn eq(&self, other: &Self) -> bool {
-        self.paren_token == other.paren_token && self.modifier == other.modifier
-            && self.lifetimes == other.lifetimes && self.path == other.path
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TraitBoundModifier {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TraitBoundModifier {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (TraitBoundModifier::None, TraitBoundModifier::None) => true,
-            (TraitBoundModifier::Maybe(_), TraitBoundModifier::Maybe(_)) => true,
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TraitItem {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TraitItem {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (TraitItem::Const(self0), TraitItem::Const(other0)) => self0 == other0,
-            (TraitItem::Fn(self0), TraitItem::Fn(other0)) => self0 == other0,
-            (TraitItem::Type(self0), TraitItem::Type(other0)) => self0 == other0,
-            (TraitItem::Macro(self0), TraitItem::Macro(other0)) => self0 == other0,
-            (TraitItem::Verbatim(self0), TraitItem::Verbatim(other0)) => {
-                TokenStreamHelper(self0) == TokenStreamHelper(other0)
-            }
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TraitItemConst {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TraitItemConst {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.ident == other.ident
-            && self.generics == other.generics && self.ty == other.ty
-            && self.default == other.default
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TraitItemFn {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TraitItemFn {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.sig == other.sig
-            && self.default == other.default && self.semi_token == other.semi_token
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TraitItemMacro {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TraitItemMacro {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.mac == other.mac
-            && self.semi_token == other.semi_token
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TraitItemType {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TraitItemType {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.ident == other.ident
-            && self.generics == other.generics && self.colon_token == other.colon_token
-            && self.bounds == other.bounds && self.default == other.default
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Type {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Type {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (Type::Array(self0), Type::Array(other0)) => self0 == other0,
-            (Type::BareFn(self0), Type::BareFn(other0)) => self0 == other0,
-            (Type::Group(self0), Type::Group(other0)) => self0 == other0,
-            (Type::ImplTrait(self0), Type::ImplTrait(other0)) => self0 == other0,
-            (Type::Infer(self0), Type::Infer(other0)) => self0 == other0,
-            (Type::Macro(self0), Type::Macro(other0)) => self0 == other0,
-            (Type::Never(self0), Type::Never(other0)) => self0 == other0,
-            (Type::Paren(self0), Type::Paren(other0)) => self0 == other0,
-            (Type::Path(self0), Type::Path(other0)) => self0 == other0,
-            (Type::Ptr(self0), Type::Ptr(other0)) => self0 == other0,
-            (Type::Reference(self0), Type::Reference(other0)) => self0 == other0,
-            (Type::Slice(self0), Type::Slice(other0)) => self0 == other0,
-            (Type::TraitObject(self0), Type::TraitObject(other0)) => self0 == other0,
-            (Type::Tuple(self0), Type::Tuple(other0)) => self0 == other0,
-            (Type::Verbatim(self0), Type::Verbatim(other0)) => {
-                TokenStreamHelper(self0) == TokenStreamHelper(other0)
-            }
-            _ => false,
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypeArray {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypeArray {
-    fn eq(&self, other: &Self) -> bool {
-        self.elem == other.elem && self.len == other.len
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypeBareFn {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypeBareFn {
-    fn eq(&self, other: &Self) -> bool {
-        self.lifetimes == other.lifetimes && self.unsafety == other.unsafety
-            && self.abi == other.abi && self.inputs == other.inputs
-            && self.variadic == other.variadic && self.output == other.output
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypeGroup {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypeGroup {
-    fn eq(&self, other: &Self) -> bool {
-        self.elem == other.elem
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypeImplTrait {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypeImplTrait {
-    fn eq(&self, other: &Self) -> bool {
-        self.bounds == other.bounds
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypeInfer {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypeInfer {
-    fn eq(&self, _other: &Self) -> bool {
-        true
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypeMacro {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypeMacro {
-    fn eq(&self, other: &Self) -> bool {
-        self.mac == other.mac
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypeNever {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypeNever {
-    fn eq(&self, _other: &Self) -> bool {
-        true
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypeParam {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypeParam {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.ident == other.ident
-            && self.colon_token == other.colon_token && self.bounds == other.bounds
-            && self.eq_token == other.eq_token && self.default == other.default
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypeParamBound {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypeParamBound {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (TypeParamBound::Trait(self0), TypeParamBound::Trait(other0)) => {
-                self0 == other0
-            }
-            (TypeParamBound::Lifetime(self0), TypeParamBound::Lifetime(other0)) => {
-                self0 == other0
-            }
-            (TypeParamBound::Verbatim(self0), TypeParamBound::Verbatim(other0)) => {
-                TokenStreamHelper(self0) == TokenStreamHelper(other0)
-            }
-            _ => false,
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypeParen {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypeParen {
-    fn eq(&self, other: &Self) -> bool {
-        self.elem == other.elem
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypePath {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypePath {
-    fn eq(&self, other: &Self) -> bool {
-        self.qself == other.qself && self.path == other.path
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypePtr {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypePtr {
-    fn eq(&self, other: &Self) -> bool {
-        self.const_token == other.const_token && self.mutability == other.mutability
-            && self.elem == other.elem
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypeReference {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypeReference {
-    fn eq(&self, other: &Self) -> bool {
-        self.lifetime == other.lifetime && self.mutability == other.mutability
-            && self.elem == other.elem
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypeSlice {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypeSlice {
-    fn eq(&self, other: &Self) -> bool {
-        self.elem == other.elem
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypeTraitObject {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypeTraitObject {
-    fn eq(&self, other: &Self) -> bool {
-        self.dyn_token == other.dyn_token && self.bounds == other.bounds
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for TypeTuple {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for TypeTuple {
-    fn eq(&self, other: &Self) -> bool {
-        self.elems == other.elems
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for UnOp {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for UnOp {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (UnOp::Deref(_), UnOp::Deref(_)) => true,
-            (UnOp::Not(_), UnOp::Not(_)) => true,
-            (UnOp::Neg(_), UnOp::Neg(_)) => true,
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for UseGlob {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for UseGlob {
-    fn eq(&self, _other: &Self) -> bool {
-        true
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for UseGroup {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for UseGroup {
-    fn eq(&self, other: &Self) -> bool {
-        self.items == other.items
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for UseName {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for UseName {
-    fn eq(&self, other: &Self) -> bool {
-        self.ident == other.ident
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for UsePath {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for UsePath {
-    fn eq(&self, other: &Self) -> bool {
-        self.ident == other.ident && self.tree == other.tree
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for UseRename {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for UseRename {
-    fn eq(&self, other: &Self) -> bool {
-        self.ident == other.ident && self.rename == other.rename
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for UseTree {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for UseTree {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (UseTree::Path(self0), UseTree::Path(other0)) => self0 == other0,
-            (UseTree::Name(self0), UseTree::Name(other0)) => self0 == other0,
-            (UseTree::Rename(self0), UseTree::Rename(other0)) => self0 == other0,
-            (UseTree::Glob(self0), UseTree::Glob(other0)) => self0 == other0,
-            (UseTree::Group(self0), UseTree::Group(other0)) => self0 == other0,
-            _ => false,
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Variadic {}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Variadic {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.pat == other.pat && self.comma == other.comma
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Variant {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Variant {
-    fn eq(&self, other: &Self) -> bool {
-        self.attrs == other.attrs && self.ident == other.ident
-            && self.fields == other.fields && self.discriminant == other.discriminant
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for VisRestricted {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for VisRestricted {
-    fn eq(&self, other: &Self) -> bool {
-        self.in_token == other.in_token && self.path == other.path
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Visibility {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Visibility {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (Visibility::Public(_), Visibility::Public(_)) => true,
-            (Visibility::Restricted(self0), Visibility::Restricted(other0)) => {
-                self0 == other0
-            }
-            (Visibility::Inherited, Visibility::Inherited) => true,
-            _ => false,
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for WhereClause {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for WhereClause {
-    fn eq(&self, other: &Self) -> bool {
-        self.predicates == other.predicates
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for WherePredicate {}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for WherePredicate {
-    fn eq(&self, other: &Self) -> bool {
-        match (self, other) {
-            (WherePredicate::Lifetime(self0), WherePredicate::Lifetime(other0)) => {
-                self0 == other0
-            }
-            (WherePredicate::Type(self0), WherePredicate::Type(other0)) => {
-                self0 == other0
-            }
-            _ => false,
-        }
-    }
-}
diff --git a/vendor/syn/src/gen/fold.rs b/vendor/syn/src/gen/fold.rs
deleted file mode 100644
index 6bd058b..0000000
--- a/vendor/syn/src/gen/fold.rs
+++ /dev/null
@@ -1,3459 +0,0 @@
-// This file is @generated by syn-internal-codegen.
-// It is not intended for manual editing.
-
-#![allow(unreachable_code, unused_variables)]
-#![allow(
-    clippy::match_wildcard_for_single_variants,
-    clippy::needless_match,
-    clippy::needless_pass_by_ref_mut,
-)]
-#[cfg(any(feature = "full", feature = "derive"))]
-use crate::gen::helper::fold::*;
-use crate::*;
-use proc_macro2::Span;
-#[cfg(feature = "full")]
-macro_rules! full {
-    ($e:expr) => {
-        $e
-    };
-}
-#[cfg(all(feature = "derive", not(feature = "full")))]
-macro_rules! full {
-    ($e:expr) => {
-        unreachable!()
-    };
-}
-/// Syntax tree traversal to transform the nodes of an owned syntax tree.
-///
-/// See the [module documentation] for details.
-///
-/// [module documentation]: self
-pub trait Fold {
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_abi(&mut self, i: Abi) -> Abi {
-        fold_abi(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_angle_bracketed_generic_arguments(
-        &mut self,
-        i: AngleBracketedGenericArguments,
-    ) -> AngleBracketedGenericArguments {
-        fold_angle_bracketed_generic_arguments(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_arm(&mut self, i: Arm) -> Arm {
-        fold_arm(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_assoc_const(&mut self, i: AssocConst) -> AssocConst {
-        fold_assoc_const(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_assoc_type(&mut self, i: AssocType) -> AssocType {
-        fold_assoc_type(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_attr_style(&mut self, i: AttrStyle) -> AttrStyle {
-        fold_attr_style(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_attribute(&mut self, i: Attribute) -> Attribute {
-        fold_attribute(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_bare_fn_arg(&mut self, i: BareFnArg) -> BareFnArg {
-        fold_bare_fn_arg(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_bare_variadic(&mut self, i: BareVariadic) -> BareVariadic {
-        fold_bare_variadic(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_bin_op(&mut self, i: BinOp) -> BinOp {
-        fold_bin_op(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_block(&mut self, i: Block) -> Block {
-        fold_block(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_bound_lifetimes(&mut self, i: BoundLifetimes) -> BoundLifetimes {
-        fold_bound_lifetimes(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_const_param(&mut self, i: ConstParam) -> ConstParam {
-        fold_const_param(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_constraint(&mut self, i: Constraint) -> Constraint {
-        fold_constraint(self, i)
-    }
-    #[cfg(feature = "derive")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    fn fold_data(&mut self, i: Data) -> Data {
-        fold_data(self, i)
-    }
-    #[cfg(feature = "derive")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    fn fold_data_enum(&mut self, i: DataEnum) -> DataEnum {
-        fold_data_enum(self, i)
-    }
-    #[cfg(feature = "derive")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    fn fold_data_struct(&mut self, i: DataStruct) -> DataStruct {
-        fold_data_struct(self, i)
-    }
-    #[cfg(feature = "derive")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    fn fold_data_union(&mut self, i: DataUnion) -> DataUnion {
-        fold_data_union(self, i)
-    }
-    #[cfg(feature = "derive")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    fn fold_derive_input(&mut self, i: DeriveInput) -> DeriveInput {
-        fold_derive_input(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_expr(&mut self, i: Expr) -> Expr {
-        fold_expr(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_array(&mut self, i: ExprArray) -> ExprArray {
-        fold_expr_array(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_assign(&mut self, i: ExprAssign) -> ExprAssign {
-        fold_expr_assign(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_async(&mut self, i: ExprAsync) -> ExprAsync {
-        fold_expr_async(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_await(&mut self, i: ExprAwait) -> ExprAwait {
-        fold_expr_await(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_expr_binary(&mut self, i: ExprBinary) -> ExprBinary {
-        fold_expr_binary(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_block(&mut self, i: ExprBlock) -> ExprBlock {
-        fold_expr_block(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_break(&mut self, i: ExprBreak) -> ExprBreak {
-        fold_expr_break(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_expr_call(&mut self, i: ExprCall) -> ExprCall {
-        fold_expr_call(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_expr_cast(&mut self, i: ExprCast) -> ExprCast {
-        fold_expr_cast(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_closure(&mut self, i: ExprClosure) -> ExprClosure {
-        fold_expr_closure(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_const(&mut self, i: ExprConst) -> ExprConst {
-        fold_expr_const(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_continue(&mut self, i: ExprContinue) -> ExprContinue {
-        fold_expr_continue(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_expr_field(&mut self, i: ExprField) -> ExprField {
-        fold_expr_field(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_for_loop(&mut self, i: ExprForLoop) -> ExprForLoop {
-        fold_expr_for_loop(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_expr_group(&mut self, i: ExprGroup) -> ExprGroup {
-        fold_expr_group(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_if(&mut self, i: ExprIf) -> ExprIf {
-        fold_expr_if(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_expr_index(&mut self, i: ExprIndex) -> ExprIndex {
-        fold_expr_index(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_infer(&mut self, i: ExprInfer) -> ExprInfer {
-        fold_expr_infer(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_let(&mut self, i: ExprLet) -> ExprLet {
-        fold_expr_let(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_expr_lit(&mut self, i: ExprLit) -> ExprLit {
-        fold_expr_lit(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_loop(&mut self, i: ExprLoop) -> ExprLoop {
-        fold_expr_loop(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_expr_macro(&mut self, i: ExprMacro) -> ExprMacro {
-        fold_expr_macro(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_match(&mut self, i: ExprMatch) -> ExprMatch {
-        fold_expr_match(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_expr_method_call(&mut self, i: ExprMethodCall) -> ExprMethodCall {
-        fold_expr_method_call(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_expr_paren(&mut self, i: ExprParen) -> ExprParen {
-        fold_expr_paren(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_expr_path(&mut self, i: ExprPath) -> ExprPath {
-        fold_expr_path(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_range(&mut self, i: ExprRange) -> ExprRange {
-        fold_expr_range(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_expr_reference(&mut self, i: ExprReference) -> ExprReference {
-        fold_expr_reference(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_repeat(&mut self, i: ExprRepeat) -> ExprRepeat {
-        fold_expr_repeat(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_return(&mut self, i: ExprReturn) -> ExprReturn {
-        fold_expr_return(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_expr_struct(&mut self, i: ExprStruct) -> ExprStruct {
-        fold_expr_struct(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_try(&mut self, i: ExprTry) -> ExprTry {
-        fold_expr_try(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_try_block(&mut self, i: ExprTryBlock) -> ExprTryBlock {
-        fold_expr_try_block(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_tuple(&mut self, i: ExprTuple) -> ExprTuple {
-        fold_expr_tuple(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_expr_unary(&mut self, i: ExprUnary) -> ExprUnary {
-        fold_expr_unary(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_unsafe(&mut self, i: ExprUnsafe) -> ExprUnsafe {
-        fold_expr_unsafe(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_while(&mut self, i: ExprWhile) -> ExprWhile {
-        fold_expr_while(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_expr_yield(&mut self, i: ExprYield) -> ExprYield {
-        fold_expr_yield(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_field(&mut self, i: Field) -> Field {
-        fold_field(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_field_mutability(&mut self, i: FieldMutability) -> FieldMutability {
-        fold_field_mutability(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_field_pat(&mut self, i: FieldPat) -> FieldPat {
-        fold_field_pat(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_field_value(&mut self, i: FieldValue) -> FieldValue {
-        fold_field_value(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_fields(&mut self, i: Fields) -> Fields {
-        fold_fields(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_fields_named(&mut self, i: FieldsNamed) -> FieldsNamed {
-        fold_fields_named(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_fields_unnamed(&mut self, i: FieldsUnnamed) -> FieldsUnnamed {
-        fold_fields_unnamed(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_file(&mut self, i: File) -> File {
-        fold_file(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_fn_arg(&mut self, i: FnArg) -> FnArg {
-        fold_fn_arg(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_foreign_item(&mut self, i: ForeignItem) -> ForeignItem {
-        fold_foreign_item(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_foreign_item_fn(&mut self, i: ForeignItemFn) -> ForeignItemFn {
-        fold_foreign_item_fn(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_foreign_item_macro(&mut self, i: ForeignItemMacro) -> ForeignItemMacro {
-        fold_foreign_item_macro(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_foreign_item_static(&mut self, i: ForeignItemStatic) -> ForeignItemStatic {
-        fold_foreign_item_static(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_foreign_item_type(&mut self, i: ForeignItemType) -> ForeignItemType {
-        fold_foreign_item_type(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_generic_argument(&mut self, i: GenericArgument) -> GenericArgument {
-        fold_generic_argument(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_generic_param(&mut self, i: GenericParam) -> GenericParam {
-        fold_generic_param(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_generics(&mut self, i: Generics) -> Generics {
-        fold_generics(self, i)
-    }
-    fn fold_ident(&mut self, i: Ident) -> Ident {
-        fold_ident(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_impl_item(&mut self, i: ImplItem) -> ImplItem {
-        fold_impl_item(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_impl_item_const(&mut self, i: ImplItemConst) -> ImplItemConst {
-        fold_impl_item_const(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_impl_item_fn(&mut self, i: ImplItemFn) -> ImplItemFn {
-        fold_impl_item_fn(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_impl_item_macro(&mut self, i: ImplItemMacro) -> ImplItemMacro {
-        fold_impl_item_macro(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_impl_item_type(&mut self, i: ImplItemType) -> ImplItemType {
-        fold_impl_item_type(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_impl_restriction(&mut self, i: ImplRestriction) -> ImplRestriction {
-        fold_impl_restriction(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_index(&mut self, i: Index) -> Index {
-        fold_index(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item(&mut self, i: Item) -> Item {
-        fold_item(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item_const(&mut self, i: ItemConst) -> ItemConst {
-        fold_item_const(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item_enum(&mut self, i: ItemEnum) -> ItemEnum {
-        fold_item_enum(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item_extern_crate(&mut self, i: ItemExternCrate) -> ItemExternCrate {
-        fold_item_extern_crate(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item_fn(&mut self, i: ItemFn) -> ItemFn {
-        fold_item_fn(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item_foreign_mod(&mut self, i: ItemForeignMod) -> ItemForeignMod {
-        fold_item_foreign_mod(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item_impl(&mut self, i: ItemImpl) -> ItemImpl {
-        fold_item_impl(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item_macro(&mut self, i: ItemMacro) -> ItemMacro {
-        fold_item_macro(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item_mod(&mut self, i: ItemMod) -> ItemMod {
-        fold_item_mod(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item_static(&mut self, i: ItemStatic) -> ItemStatic {
-        fold_item_static(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item_struct(&mut self, i: ItemStruct) -> ItemStruct {
-        fold_item_struct(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item_trait(&mut self, i: ItemTrait) -> ItemTrait {
-        fold_item_trait(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item_trait_alias(&mut self, i: ItemTraitAlias) -> ItemTraitAlias {
-        fold_item_trait_alias(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item_type(&mut self, i: ItemType) -> ItemType {
-        fold_item_type(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item_union(&mut self, i: ItemUnion) -> ItemUnion {
-        fold_item_union(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_item_use(&mut self, i: ItemUse) -> ItemUse {
-        fold_item_use(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_label(&mut self, i: Label) -> Label {
-        fold_label(self, i)
-    }
-    fn fold_lifetime(&mut self, i: Lifetime) -> Lifetime {
-        fold_lifetime(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_lifetime_param(&mut self, i: LifetimeParam) -> LifetimeParam {
-        fold_lifetime_param(self, i)
-    }
-    fn fold_lit(&mut self, i: Lit) -> Lit {
-        fold_lit(self, i)
-    }
-    fn fold_lit_bool(&mut self, i: LitBool) -> LitBool {
-        fold_lit_bool(self, i)
-    }
-    fn fold_lit_byte(&mut self, i: LitByte) -> LitByte {
-        fold_lit_byte(self, i)
-    }
-    fn fold_lit_byte_str(&mut self, i: LitByteStr) -> LitByteStr {
-        fold_lit_byte_str(self, i)
-    }
-    fn fold_lit_char(&mut self, i: LitChar) -> LitChar {
-        fold_lit_char(self, i)
-    }
-    fn fold_lit_float(&mut self, i: LitFloat) -> LitFloat {
-        fold_lit_float(self, i)
-    }
-    fn fold_lit_int(&mut self, i: LitInt) -> LitInt {
-        fold_lit_int(self, i)
-    }
-    fn fold_lit_str(&mut self, i: LitStr) -> LitStr {
-        fold_lit_str(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_local(&mut self, i: Local) -> Local {
-        fold_local(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_local_init(&mut self, i: LocalInit) -> LocalInit {
-        fold_local_init(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_macro(&mut self, i: Macro) -> Macro {
-        fold_macro(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_macro_delimiter(&mut self, i: MacroDelimiter) -> MacroDelimiter {
-        fold_macro_delimiter(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_member(&mut self, i: Member) -> Member {
-        fold_member(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_meta(&mut self, i: Meta) -> Meta {
-        fold_meta(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_meta_list(&mut self, i: MetaList) -> MetaList {
-        fold_meta_list(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_meta_name_value(&mut self, i: MetaNameValue) -> MetaNameValue {
-        fold_meta_name_value(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_parenthesized_generic_arguments(
-        &mut self,
-        i: ParenthesizedGenericArguments,
-    ) -> ParenthesizedGenericArguments {
-        fold_parenthesized_generic_arguments(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_pat(&mut self, i: Pat) -> Pat {
-        fold_pat(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_pat_ident(&mut self, i: PatIdent) -> PatIdent {
-        fold_pat_ident(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_pat_or(&mut self, i: PatOr) -> PatOr {
-        fold_pat_or(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_pat_paren(&mut self, i: PatParen) -> PatParen {
-        fold_pat_paren(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_pat_reference(&mut self, i: PatReference) -> PatReference {
-        fold_pat_reference(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_pat_rest(&mut self, i: PatRest) -> PatRest {
-        fold_pat_rest(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_pat_slice(&mut self, i: PatSlice) -> PatSlice {
-        fold_pat_slice(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_pat_struct(&mut self, i: PatStruct) -> PatStruct {
-        fold_pat_struct(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_pat_tuple(&mut self, i: PatTuple) -> PatTuple {
-        fold_pat_tuple(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_pat_tuple_struct(&mut self, i: PatTupleStruct) -> PatTupleStruct {
-        fold_pat_tuple_struct(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_pat_type(&mut self, i: PatType) -> PatType {
-        fold_pat_type(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_pat_wild(&mut self, i: PatWild) -> PatWild {
-        fold_pat_wild(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_path(&mut self, i: Path) -> Path {
-        fold_path(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_path_arguments(&mut self, i: PathArguments) -> PathArguments {
-        fold_path_arguments(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_path_segment(&mut self, i: PathSegment) -> PathSegment {
-        fold_path_segment(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_predicate_lifetime(&mut self, i: PredicateLifetime) -> PredicateLifetime {
-        fold_predicate_lifetime(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_predicate_type(&mut self, i: PredicateType) -> PredicateType {
-        fold_predicate_type(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_qself(&mut self, i: QSelf) -> QSelf {
-        fold_qself(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_range_limits(&mut self, i: RangeLimits) -> RangeLimits {
-        fold_range_limits(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_receiver(&mut self, i: Receiver) -> Receiver {
-        fold_receiver(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_return_type(&mut self, i: ReturnType) -> ReturnType {
-        fold_return_type(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_signature(&mut self, i: Signature) -> Signature {
-        fold_signature(self, i)
-    }
-    fn fold_span(&mut self, i: Span) -> Span {
-        fold_span(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_static_mutability(&mut self, i: StaticMutability) -> StaticMutability {
-        fold_static_mutability(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_stmt(&mut self, i: Stmt) -> Stmt {
-        fold_stmt(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_stmt_macro(&mut self, i: StmtMacro) -> StmtMacro {
-        fold_stmt_macro(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_trait_bound(&mut self, i: TraitBound) -> TraitBound {
-        fold_trait_bound(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_trait_bound_modifier(
-        &mut self,
-        i: TraitBoundModifier,
-    ) -> TraitBoundModifier {
-        fold_trait_bound_modifier(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_trait_item(&mut self, i: TraitItem) -> TraitItem {
-        fold_trait_item(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_trait_item_const(&mut self, i: TraitItemConst) -> TraitItemConst {
-        fold_trait_item_const(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_trait_item_fn(&mut self, i: TraitItemFn) -> TraitItemFn {
-        fold_trait_item_fn(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_trait_item_macro(&mut self, i: TraitItemMacro) -> TraitItemMacro {
-        fold_trait_item_macro(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_trait_item_type(&mut self, i: TraitItemType) -> TraitItemType {
-        fold_trait_item_type(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type(&mut self, i: Type) -> Type {
-        fold_type(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_array(&mut self, i: TypeArray) -> TypeArray {
-        fold_type_array(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_bare_fn(&mut self, i: TypeBareFn) -> TypeBareFn {
-        fold_type_bare_fn(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_group(&mut self, i: TypeGroup) -> TypeGroup {
-        fold_type_group(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_impl_trait(&mut self, i: TypeImplTrait) -> TypeImplTrait {
-        fold_type_impl_trait(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_infer(&mut self, i: TypeInfer) -> TypeInfer {
-        fold_type_infer(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_macro(&mut self, i: TypeMacro) -> TypeMacro {
-        fold_type_macro(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_never(&mut self, i: TypeNever) -> TypeNever {
-        fold_type_never(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_param(&mut self, i: TypeParam) -> TypeParam {
-        fold_type_param(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_param_bound(&mut self, i: TypeParamBound) -> TypeParamBound {
-        fold_type_param_bound(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_paren(&mut self, i: TypeParen) -> TypeParen {
-        fold_type_paren(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_path(&mut self, i: TypePath) -> TypePath {
-        fold_type_path(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_ptr(&mut self, i: TypePtr) -> TypePtr {
-        fold_type_ptr(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_reference(&mut self, i: TypeReference) -> TypeReference {
-        fold_type_reference(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_slice(&mut self, i: TypeSlice) -> TypeSlice {
-        fold_type_slice(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_trait_object(&mut self, i: TypeTraitObject) -> TypeTraitObject {
-        fold_type_trait_object(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_type_tuple(&mut self, i: TypeTuple) -> TypeTuple {
-        fold_type_tuple(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_un_op(&mut self, i: UnOp) -> UnOp {
-        fold_un_op(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_use_glob(&mut self, i: UseGlob) -> UseGlob {
-        fold_use_glob(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_use_group(&mut self, i: UseGroup) -> UseGroup {
-        fold_use_group(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_use_name(&mut self, i: UseName) -> UseName {
-        fold_use_name(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_use_path(&mut self, i: UsePath) -> UsePath {
-        fold_use_path(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_use_rename(&mut self, i: UseRename) -> UseRename {
-        fold_use_rename(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_use_tree(&mut self, i: UseTree) -> UseTree {
-        fold_use_tree(self, i)
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn fold_variadic(&mut self, i: Variadic) -> Variadic {
-        fold_variadic(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_variant(&mut self, i: Variant) -> Variant {
-        fold_variant(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_vis_restricted(&mut self, i: VisRestricted) -> VisRestricted {
-        fold_vis_restricted(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_visibility(&mut self, i: Visibility) -> Visibility {
-        fold_visibility(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_where_clause(&mut self, i: WhereClause) -> WhereClause {
-        fold_where_clause(self, i)
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn fold_where_predicate(&mut self, i: WherePredicate) -> WherePredicate {
-        fold_where_predicate(self, i)
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_abi<F>(f: &mut F, node: Abi) -> Abi
-where
-    F: Fold + ?Sized,
-{
-    Abi {
-        extern_token: node.extern_token,
-        name: (node.name).map(|it| f.fold_lit_str(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_angle_bracketed_generic_arguments<F>(
-    f: &mut F,
-    node: AngleBracketedGenericArguments,
-) -> AngleBracketedGenericArguments
-where
-    F: Fold + ?Sized,
-{
-    AngleBracketedGenericArguments {
-        colon2_token: node.colon2_token,
-        lt_token: node.lt_token,
-        args: FoldHelper::lift(node.args, |it| f.fold_generic_argument(it)),
-        gt_token: node.gt_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_arm<F>(f: &mut F, node: Arm) -> Arm
-where
-    F: Fold + ?Sized,
-{
-    Arm {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        pat: f.fold_pat(node.pat),
-        guard: (node.guard).map(|it| ((it).0, Box::new(f.fold_expr(*(it).1)))),
-        fat_arrow_token: node.fat_arrow_token,
-        body: Box::new(f.fold_expr(*node.body)),
-        comma: node.comma,
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_assoc_const<F>(f: &mut F, node: AssocConst) -> AssocConst
-where
-    F: Fold + ?Sized,
-{
-    AssocConst {
-        ident: f.fold_ident(node.ident),
-        generics: (node.generics).map(|it| f.fold_angle_bracketed_generic_arguments(it)),
-        eq_token: node.eq_token,
-        value: f.fold_expr(node.value),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_assoc_type<F>(f: &mut F, node: AssocType) -> AssocType
-where
-    F: Fold + ?Sized,
-{
-    AssocType {
-        ident: f.fold_ident(node.ident),
-        generics: (node.generics).map(|it| f.fold_angle_bracketed_generic_arguments(it)),
-        eq_token: node.eq_token,
-        ty: f.fold_type(node.ty),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_attr_style<F>(f: &mut F, node: AttrStyle) -> AttrStyle
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        AttrStyle::Outer => AttrStyle::Outer,
-        AttrStyle::Inner(_binding_0) => AttrStyle::Inner(_binding_0),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_attribute<F>(f: &mut F, node: Attribute) -> Attribute
-where
-    F: Fold + ?Sized,
-{
-    Attribute {
-        pound_token: node.pound_token,
-        style: f.fold_attr_style(node.style),
-        bracket_token: node.bracket_token,
-        meta: f.fold_meta(node.meta),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_bare_fn_arg<F>(f: &mut F, node: BareFnArg) -> BareFnArg
-where
-    F: Fold + ?Sized,
-{
-    BareFnArg {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        name: (node.name).map(|it| (f.fold_ident((it).0), (it).1)),
-        ty: f.fold_type(node.ty),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_bare_variadic<F>(f: &mut F, node: BareVariadic) -> BareVariadic
-where
-    F: Fold + ?Sized,
-{
-    BareVariadic {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        name: (node.name).map(|it| (f.fold_ident((it).0), (it).1)),
-        dots: node.dots,
-        comma: node.comma,
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_bin_op<F>(f: &mut F, node: BinOp) -> BinOp
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        BinOp::Add(_binding_0) => BinOp::Add(_binding_0),
-        BinOp::Sub(_binding_0) => BinOp::Sub(_binding_0),
-        BinOp::Mul(_binding_0) => BinOp::Mul(_binding_0),
-        BinOp::Div(_binding_0) => BinOp::Div(_binding_0),
-        BinOp::Rem(_binding_0) => BinOp::Rem(_binding_0),
-        BinOp::And(_binding_0) => BinOp::And(_binding_0),
-        BinOp::Or(_binding_0) => BinOp::Or(_binding_0),
-        BinOp::BitXor(_binding_0) => BinOp::BitXor(_binding_0),
-        BinOp::BitAnd(_binding_0) => BinOp::BitAnd(_binding_0),
-        BinOp::BitOr(_binding_0) => BinOp::BitOr(_binding_0),
-        BinOp::Shl(_binding_0) => BinOp::Shl(_binding_0),
-        BinOp::Shr(_binding_0) => BinOp::Shr(_binding_0),
-        BinOp::Eq(_binding_0) => BinOp::Eq(_binding_0),
-        BinOp::Lt(_binding_0) => BinOp::Lt(_binding_0),
-        BinOp::Le(_binding_0) => BinOp::Le(_binding_0),
-        BinOp::Ne(_binding_0) => BinOp::Ne(_binding_0),
-        BinOp::Ge(_binding_0) => BinOp::Ge(_binding_0),
-        BinOp::Gt(_binding_0) => BinOp::Gt(_binding_0),
-        BinOp::AddAssign(_binding_0) => BinOp::AddAssign(_binding_0),
-        BinOp::SubAssign(_binding_0) => BinOp::SubAssign(_binding_0),
-        BinOp::MulAssign(_binding_0) => BinOp::MulAssign(_binding_0),
-        BinOp::DivAssign(_binding_0) => BinOp::DivAssign(_binding_0),
-        BinOp::RemAssign(_binding_0) => BinOp::RemAssign(_binding_0),
-        BinOp::BitXorAssign(_binding_0) => BinOp::BitXorAssign(_binding_0),
-        BinOp::BitAndAssign(_binding_0) => BinOp::BitAndAssign(_binding_0),
-        BinOp::BitOrAssign(_binding_0) => BinOp::BitOrAssign(_binding_0),
-        BinOp::ShlAssign(_binding_0) => BinOp::ShlAssign(_binding_0),
-        BinOp::ShrAssign(_binding_0) => BinOp::ShrAssign(_binding_0),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_block<F>(f: &mut F, node: Block) -> Block
-where
-    F: Fold + ?Sized,
-{
-    Block {
-        brace_token: node.brace_token,
-        stmts: FoldHelper::lift(node.stmts, |it| f.fold_stmt(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_bound_lifetimes<F>(f: &mut F, node: BoundLifetimes) -> BoundLifetimes
-where
-    F: Fold + ?Sized,
-{
-    BoundLifetimes {
-        for_token: node.for_token,
-        lt_token: node.lt_token,
-        lifetimes: FoldHelper::lift(node.lifetimes, |it| f.fold_generic_param(it)),
-        gt_token: node.gt_token,
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_const_param<F>(f: &mut F, node: ConstParam) -> ConstParam
-where
-    F: Fold + ?Sized,
-{
-    ConstParam {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        const_token: node.const_token,
-        ident: f.fold_ident(node.ident),
-        colon_token: node.colon_token,
-        ty: f.fold_type(node.ty),
-        eq_token: node.eq_token,
-        default: (node.default).map(|it| f.fold_expr(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_constraint<F>(f: &mut F, node: Constraint) -> Constraint
-where
-    F: Fold + ?Sized,
-{
-    Constraint {
-        ident: f.fold_ident(node.ident),
-        generics: (node.generics).map(|it| f.fold_angle_bracketed_generic_arguments(it)),
-        colon_token: node.colon_token,
-        bounds: FoldHelper::lift(node.bounds, |it| f.fold_type_param_bound(it)),
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub fn fold_data<F>(f: &mut F, node: Data) -> Data
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        Data::Struct(_binding_0) => Data::Struct(f.fold_data_struct(_binding_0)),
-        Data::Enum(_binding_0) => Data::Enum(f.fold_data_enum(_binding_0)),
-        Data::Union(_binding_0) => Data::Union(f.fold_data_union(_binding_0)),
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub fn fold_data_enum<F>(f: &mut F, node: DataEnum) -> DataEnum
-where
-    F: Fold + ?Sized,
-{
-    DataEnum {
-        enum_token: node.enum_token,
-        brace_token: node.brace_token,
-        variants: FoldHelper::lift(node.variants, |it| f.fold_variant(it)),
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub fn fold_data_struct<F>(f: &mut F, node: DataStruct) -> DataStruct
-where
-    F: Fold + ?Sized,
-{
-    DataStruct {
-        struct_token: node.struct_token,
-        fields: f.fold_fields(node.fields),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub fn fold_data_union<F>(f: &mut F, node: DataUnion) -> DataUnion
-where
-    F: Fold + ?Sized,
-{
-    DataUnion {
-        union_token: node.union_token,
-        fields: f.fold_fields_named(node.fields),
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub fn fold_derive_input<F>(f: &mut F, node: DeriveInput) -> DeriveInput
-where
-    F: Fold + ?Sized,
-{
-    DeriveInput {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        ident: f.fold_ident(node.ident),
-        generics: f.fold_generics(node.generics),
-        data: f.fold_data(node.data),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_expr<F>(f: &mut F, node: Expr) -> Expr
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        Expr::Array(_binding_0) => Expr::Array(full!(f.fold_expr_array(_binding_0))),
-        Expr::Assign(_binding_0) => Expr::Assign(full!(f.fold_expr_assign(_binding_0))),
-        Expr::Async(_binding_0) => Expr::Async(full!(f.fold_expr_async(_binding_0))),
-        Expr::Await(_binding_0) => Expr::Await(full!(f.fold_expr_await(_binding_0))),
-        Expr::Binary(_binding_0) => Expr::Binary(f.fold_expr_binary(_binding_0)),
-        Expr::Block(_binding_0) => Expr::Block(full!(f.fold_expr_block(_binding_0))),
-        Expr::Break(_binding_0) => Expr::Break(full!(f.fold_expr_break(_binding_0))),
-        Expr::Call(_binding_0) => Expr::Call(f.fold_expr_call(_binding_0)),
-        Expr::Cast(_binding_0) => Expr::Cast(f.fold_expr_cast(_binding_0)),
-        Expr::Closure(_binding_0) => {
-            Expr::Closure(full!(f.fold_expr_closure(_binding_0)))
-        }
-        Expr::Const(_binding_0) => Expr::Const(full!(f.fold_expr_const(_binding_0))),
-        Expr::Continue(_binding_0) => {
-            Expr::Continue(full!(f.fold_expr_continue(_binding_0)))
-        }
-        Expr::Field(_binding_0) => Expr::Field(f.fold_expr_field(_binding_0)),
-        Expr::ForLoop(_binding_0) => {
-            Expr::ForLoop(full!(f.fold_expr_for_loop(_binding_0)))
-        }
-        Expr::Group(_binding_0) => Expr::Group(f.fold_expr_group(_binding_0)),
-        Expr::If(_binding_0) => Expr::If(full!(f.fold_expr_if(_binding_0))),
-        Expr::Index(_binding_0) => Expr::Index(f.fold_expr_index(_binding_0)),
-        Expr::Infer(_binding_0) => Expr::Infer(full!(f.fold_expr_infer(_binding_0))),
-        Expr::Let(_binding_0) => Expr::Let(full!(f.fold_expr_let(_binding_0))),
-        Expr::Lit(_binding_0) => Expr::Lit(f.fold_expr_lit(_binding_0)),
-        Expr::Loop(_binding_0) => Expr::Loop(full!(f.fold_expr_loop(_binding_0))),
-        Expr::Macro(_binding_0) => Expr::Macro(f.fold_expr_macro(_binding_0)),
-        Expr::Match(_binding_0) => Expr::Match(full!(f.fold_expr_match(_binding_0))),
-        Expr::MethodCall(_binding_0) => {
-            Expr::MethodCall(f.fold_expr_method_call(_binding_0))
-        }
-        Expr::Paren(_binding_0) => Expr::Paren(f.fold_expr_paren(_binding_0)),
-        Expr::Path(_binding_0) => Expr::Path(f.fold_expr_path(_binding_0)),
-        Expr::Range(_binding_0) => Expr::Range(full!(f.fold_expr_range(_binding_0))),
-        Expr::Reference(_binding_0) => Expr::Reference(f.fold_expr_reference(_binding_0)),
-        Expr::Repeat(_binding_0) => Expr::Repeat(full!(f.fold_expr_repeat(_binding_0))),
-        Expr::Return(_binding_0) => Expr::Return(full!(f.fold_expr_return(_binding_0))),
-        Expr::Struct(_binding_0) => Expr::Struct(f.fold_expr_struct(_binding_0)),
-        Expr::Try(_binding_0) => Expr::Try(full!(f.fold_expr_try(_binding_0))),
-        Expr::TryBlock(_binding_0) => {
-            Expr::TryBlock(full!(f.fold_expr_try_block(_binding_0)))
-        }
-        Expr::Tuple(_binding_0) => Expr::Tuple(full!(f.fold_expr_tuple(_binding_0))),
-        Expr::Unary(_binding_0) => Expr::Unary(f.fold_expr_unary(_binding_0)),
-        Expr::Unsafe(_binding_0) => Expr::Unsafe(full!(f.fold_expr_unsafe(_binding_0))),
-        Expr::Verbatim(_binding_0) => Expr::Verbatim(_binding_0),
-        Expr::While(_binding_0) => Expr::While(full!(f.fold_expr_while(_binding_0))),
-        Expr::Yield(_binding_0) => Expr::Yield(full!(f.fold_expr_yield(_binding_0))),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_array<F>(f: &mut F, node: ExprArray) -> ExprArray
-where
-    F: Fold + ?Sized,
-{
-    ExprArray {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        bracket_token: node.bracket_token,
-        elems: FoldHelper::lift(node.elems, |it| f.fold_expr(it)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_assign<F>(f: &mut F, node: ExprAssign) -> ExprAssign
-where
-    F: Fold + ?Sized,
-{
-    ExprAssign {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        left: Box::new(f.fold_expr(*node.left)),
-        eq_token: node.eq_token,
-        right: Box::new(f.fold_expr(*node.right)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_async<F>(f: &mut F, node: ExprAsync) -> ExprAsync
-where
-    F: Fold + ?Sized,
-{
-    ExprAsync {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        async_token: node.async_token,
-        capture: node.capture,
-        block: f.fold_block(node.block),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_await<F>(f: &mut F, node: ExprAwait) -> ExprAwait
-where
-    F: Fold + ?Sized,
-{
-    ExprAwait {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        base: Box::new(f.fold_expr(*node.base)),
-        dot_token: node.dot_token,
-        await_token: node.await_token,
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_expr_binary<F>(f: &mut F, node: ExprBinary) -> ExprBinary
-where
-    F: Fold + ?Sized,
-{
-    ExprBinary {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        left: Box::new(f.fold_expr(*node.left)),
-        op: f.fold_bin_op(node.op),
-        right: Box::new(f.fold_expr(*node.right)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_block<F>(f: &mut F, node: ExprBlock) -> ExprBlock
-where
-    F: Fold + ?Sized,
-{
-    ExprBlock {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        label: (node.label).map(|it| f.fold_label(it)),
-        block: f.fold_block(node.block),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_break<F>(f: &mut F, node: ExprBreak) -> ExprBreak
-where
-    F: Fold + ?Sized,
-{
-    ExprBreak {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        break_token: node.break_token,
-        label: (node.label).map(|it| f.fold_lifetime(it)),
-        expr: (node.expr).map(|it| Box::new(f.fold_expr(*it))),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_expr_call<F>(f: &mut F, node: ExprCall) -> ExprCall
-where
-    F: Fold + ?Sized,
-{
-    ExprCall {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        func: Box::new(f.fold_expr(*node.func)),
-        paren_token: node.paren_token,
-        args: FoldHelper::lift(node.args, |it| f.fold_expr(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_expr_cast<F>(f: &mut F, node: ExprCast) -> ExprCast
-where
-    F: Fold + ?Sized,
-{
-    ExprCast {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        expr: Box::new(f.fold_expr(*node.expr)),
-        as_token: node.as_token,
-        ty: Box::new(f.fold_type(*node.ty)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_closure<F>(f: &mut F, node: ExprClosure) -> ExprClosure
-where
-    F: Fold + ?Sized,
-{
-    ExprClosure {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        lifetimes: (node.lifetimes).map(|it| f.fold_bound_lifetimes(it)),
-        constness: node.constness,
-        movability: node.movability,
-        asyncness: node.asyncness,
-        capture: node.capture,
-        or1_token: node.or1_token,
-        inputs: FoldHelper::lift(node.inputs, |it| f.fold_pat(it)),
-        or2_token: node.or2_token,
-        output: f.fold_return_type(node.output),
-        body: Box::new(f.fold_expr(*node.body)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_const<F>(f: &mut F, node: ExprConst) -> ExprConst
-where
-    F: Fold + ?Sized,
-{
-    ExprConst {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        const_token: node.const_token,
-        block: f.fold_block(node.block),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_continue<F>(f: &mut F, node: ExprContinue) -> ExprContinue
-where
-    F: Fold + ?Sized,
-{
-    ExprContinue {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        continue_token: node.continue_token,
-        label: (node.label).map(|it| f.fold_lifetime(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_expr_field<F>(f: &mut F, node: ExprField) -> ExprField
-where
-    F: Fold + ?Sized,
-{
-    ExprField {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        base: Box::new(f.fold_expr(*node.base)),
-        dot_token: node.dot_token,
-        member: f.fold_member(node.member),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_for_loop<F>(f: &mut F, node: ExprForLoop) -> ExprForLoop
-where
-    F: Fold + ?Sized,
-{
-    ExprForLoop {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        label: (node.label).map(|it| f.fold_label(it)),
-        for_token: node.for_token,
-        pat: Box::new(f.fold_pat(*node.pat)),
-        in_token: node.in_token,
-        expr: Box::new(f.fold_expr(*node.expr)),
-        body: f.fold_block(node.body),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_expr_group<F>(f: &mut F, node: ExprGroup) -> ExprGroup
-where
-    F: Fold + ?Sized,
-{
-    ExprGroup {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        group_token: node.group_token,
-        expr: Box::new(f.fold_expr(*node.expr)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_if<F>(f: &mut F, node: ExprIf) -> ExprIf
-where
-    F: Fold + ?Sized,
-{
-    ExprIf {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        if_token: node.if_token,
-        cond: Box::new(f.fold_expr(*node.cond)),
-        then_branch: f.fold_block(node.then_branch),
-        else_branch: (node.else_branch)
-            .map(|it| ((it).0, Box::new(f.fold_expr(*(it).1)))),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_expr_index<F>(f: &mut F, node: ExprIndex) -> ExprIndex
-where
-    F: Fold + ?Sized,
-{
-    ExprIndex {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        expr: Box::new(f.fold_expr(*node.expr)),
-        bracket_token: node.bracket_token,
-        index: Box::new(f.fold_expr(*node.index)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_infer<F>(f: &mut F, node: ExprInfer) -> ExprInfer
-where
-    F: Fold + ?Sized,
-{
-    ExprInfer {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        underscore_token: node.underscore_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_let<F>(f: &mut F, node: ExprLet) -> ExprLet
-where
-    F: Fold + ?Sized,
-{
-    ExprLet {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        let_token: node.let_token,
-        pat: Box::new(f.fold_pat(*node.pat)),
-        eq_token: node.eq_token,
-        expr: Box::new(f.fold_expr(*node.expr)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_expr_lit<F>(f: &mut F, node: ExprLit) -> ExprLit
-where
-    F: Fold + ?Sized,
-{
-    ExprLit {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        lit: f.fold_lit(node.lit),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_loop<F>(f: &mut F, node: ExprLoop) -> ExprLoop
-where
-    F: Fold + ?Sized,
-{
-    ExprLoop {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        label: (node.label).map(|it| f.fold_label(it)),
-        loop_token: node.loop_token,
-        body: f.fold_block(node.body),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_expr_macro<F>(f: &mut F, node: ExprMacro) -> ExprMacro
-where
-    F: Fold + ?Sized,
-{
-    ExprMacro {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        mac: f.fold_macro(node.mac),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_match<F>(f: &mut F, node: ExprMatch) -> ExprMatch
-where
-    F: Fold + ?Sized,
-{
-    ExprMatch {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        match_token: node.match_token,
-        expr: Box::new(f.fold_expr(*node.expr)),
-        brace_token: node.brace_token,
-        arms: FoldHelper::lift(node.arms, |it| f.fold_arm(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_expr_method_call<F>(f: &mut F, node: ExprMethodCall) -> ExprMethodCall
-where
-    F: Fold + ?Sized,
-{
-    ExprMethodCall {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        receiver: Box::new(f.fold_expr(*node.receiver)),
-        dot_token: node.dot_token,
-        method: f.fold_ident(node.method),
-        turbofish: (node.turbofish)
-            .map(|it| f.fold_angle_bracketed_generic_arguments(it)),
-        paren_token: node.paren_token,
-        args: FoldHelper::lift(node.args, |it| f.fold_expr(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_expr_paren<F>(f: &mut F, node: ExprParen) -> ExprParen
-where
-    F: Fold + ?Sized,
-{
-    ExprParen {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        paren_token: node.paren_token,
-        expr: Box::new(f.fold_expr(*node.expr)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_expr_path<F>(f: &mut F, node: ExprPath) -> ExprPath
-where
-    F: Fold + ?Sized,
-{
-    ExprPath {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        qself: (node.qself).map(|it| f.fold_qself(it)),
-        path: f.fold_path(node.path),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_range<F>(f: &mut F, node: ExprRange) -> ExprRange
-where
-    F: Fold + ?Sized,
-{
-    ExprRange {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        start: (node.start).map(|it| Box::new(f.fold_expr(*it))),
-        limits: f.fold_range_limits(node.limits),
-        end: (node.end).map(|it| Box::new(f.fold_expr(*it))),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_expr_reference<F>(f: &mut F, node: ExprReference) -> ExprReference
-where
-    F: Fold + ?Sized,
-{
-    ExprReference {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        and_token: node.and_token,
-        mutability: node.mutability,
-        expr: Box::new(f.fold_expr(*node.expr)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_repeat<F>(f: &mut F, node: ExprRepeat) -> ExprRepeat
-where
-    F: Fold + ?Sized,
-{
-    ExprRepeat {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        bracket_token: node.bracket_token,
-        expr: Box::new(f.fold_expr(*node.expr)),
-        semi_token: node.semi_token,
-        len: Box::new(f.fold_expr(*node.len)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_return<F>(f: &mut F, node: ExprReturn) -> ExprReturn
-where
-    F: Fold + ?Sized,
-{
-    ExprReturn {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        return_token: node.return_token,
-        expr: (node.expr).map(|it| Box::new(f.fold_expr(*it))),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_expr_struct<F>(f: &mut F, node: ExprStruct) -> ExprStruct
-where
-    F: Fold + ?Sized,
-{
-    ExprStruct {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        qself: (node.qself).map(|it| f.fold_qself(it)),
-        path: f.fold_path(node.path),
-        brace_token: node.brace_token,
-        fields: FoldHelper::lift(node.fields, |it| f.fold_field_value(it)),
-        dot2_token: node.dot2_token,
-        rest: (node.rest).map(|it| Box::new(f.fold_expr(*it))),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_try<F>(f: &mut F, node: ExprTry) -> ExprTry
-where
-    F: Fold + ?Sized,
-{
-    ExprTry {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        expr: Box::new(f.fold_expr(*node.expr)),
-        question_token: node.question_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_try_block<F>(f: &mut F, node: ExprTryBlock) -> ExprTryBlock
-where
-    F: Fold + ?Sized,
-{
-    ExprTryBlock {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        try_token: node.try_token,
-        block: f.fold_block(node.block),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_tuple<F>(f: &mut F, node: ExprTuple) -> ExprTuple
-where
-    F: Fold + ?Sized,
-{
-    ExprTuple {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        paren_token: node.paren_token,
-        elems: FoldHelper::lift(node.elems, |it| f.fold_expr(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_expr_unary<F>(f: &mut F, node: ExprUnary) -> ExprUnary
-where
-    F: Fold + ?Sized,
-{
-    ExprUnary {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        op: f.fold_un_op(node.op),
-        expr: Box::new(f.fold_expr(*node.expr)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_unsafe<F>(f: &mut F, node: ExprUnsafe) -> ExprUnsafe
-where
-    F: Fold + ?Sized,
-{
-    ExprUnsafe {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        unsafe_token: node.unsafe_token,
-        block: f.fold_block(node.block),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_while<F>(f: &mut F, node: ExprWhile) -> ExprWhile
-where
-    F: Fold + ?Sized,
-{
-    ExprWhile {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        label: (node.label).map(|it| f.fold_label(it)),
-        while_token: node.while_token,
-        cond: Box::new(f.fold_expr(*node.cond)),
-        body: f.fold_block(node.body),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_expr_yield<F>(f: &mut F, node: ExprYield) -> ExprYield
-where
-    F: Fold + ?Sized,
-{
-    ExprYield {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        yield_token: node.yield_token,
-        expr: (node.expr).map(|it| Box::new(f.fold_expr(*it))),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_field<F>(f: &mut F, node: Field) -> Field
-where
-    F: Fold + ?Sized,
-{
-    Field {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        mutability: f.fold_field_mutability(node.mutability),
-        ident: (node.ident).map(|it| f.fold_ident(it)),
-        colon_token: node.colon_token,
-        ty: f.fold_type(node.ty),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_field_mutability<F>(f: &mut F, node: FieldMutability) -> FieldMutability
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        FieldMutability::None => FieldMutability::None,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_field_pat<F>(f: &mut F, node: FieldPat) -> FieldPat
-where
-    F: Fold + ?Sized,
-{
-    FieldPat {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        member: f.fold_member(node.member),
-        colon_token: node.colon_token,
-        pat: Box::new(f.fold_pat(*node.pat)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_field_value<F>(f: &mut F, node: FieldValue) -> FieldValue
-where
-    F: Fold + ?Sized,
-{
-    FieldValue {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        member: f.fold_member(node.member),
-        colon_token: node.colon_token,
-        expr: f.fold_expr(node.expr),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_fields<F>(f: &mut F, node: Fields) -> Fields
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        Fields::Named(_binding_0) => Fields::Named(f.fold_fields_named(_binding_0)),
-        Fields::Unnamed(_binding_0) => Fields::Unnamed(f.fold_fields_unnamed(_binding_0)),
-        Fields::Unit => Fields::Unit,
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_fields_named<F>(f: &mut F, node: FieldsNamed) -> FieldsNamed
-where
-    F: Fold + ?Sized,
-{
-    FieldsNamed {
-        brace_token: node.brace_token,
-        named: FoldHelper::lift(node.named, |it| f.fold_field(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_fields_unnamed<F>(f: &mut F, node: FieldsUnnamed) -> FieldsUnnamed
-where
-    F: Fold + ?Sized,
-{
-    FieldsUnnamed {
-        paren_token: node.paren_token,
-        unnamed: FoldHelper::lift(node.unnamed, |it| f.fold_field(it)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_file<F>(f: &mut F, node: File) -> File
-where
-    F: Fold + ?Sized,
-{
-    File {
-        shebang: node.shebang,
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        items: FoldHelper::lift(node.items, |it| f.fold_item(it)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_fn_arg<F>(f: &mut F, node: FnArg) -> FnArg
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        FnArg::Receiver(_binding_0) => FnArg::Receiver(f.fold_receiver(_binding_0)),
-        FnArg::Typed(_binding_0) => FnArg::Typed(f.fold_pat_type(_binding_0)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_foreign_item<F>(f: &mut F, node: ForeignItem) -> ForeignItem
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        ForeignItem::Fn(_binding_0) => {
-            ForeignItem::Fn(f.fold_foreign_item_fn(_binding_0))
-        }
-        ForeignItem::Static(_binding_0) => {
-            ForeignItem::Static(f.fold_foreign_item_static(_binding_0))
-        }
-        ForeignItem::Type(_binding_0) => {
-            ForeignItem::Type(f.fold_foreign_item_type(_binding_0))
-        }
-        ForeignItem::Macro(_binding_0) => {
-            ForeignItem::Macro(f.fold_foreign_item_macro(_binding_0))
-        }
-        ForeignItem::Verbatim(_binding_0) => ForeignItem::Verbatim(_binding_0),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_foreign_item_fn<F>(f: &mut F, node: ForeignItemFn) -> ForeignItemFn
-where
-    F: Fold + ?Sized,
-{
-    ForeignItemFn {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        sig: f.fold_signature(node.sig),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_foreign_item_macro<F>(f: &mut F, node: ForeignItemMacro) -> ForeignItemMacro
-where
-    F: Fold + ?Sized,
-{
-    ForeignItemMacro {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        mac: f.fold_macro(node.mac),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_foreign_item_static<F>(
-    f: &mut F,
-    node: ForeignItemStatic,
-) -> ForeignItemStatic
-where
-    F: Fold + ?Sized,
-{
-    ForeignItemStatic {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        static_token: node.static_token,
-        mutability: f.fold_static_mutability(node.mutability),
-        ident: f.fold_ident(node.ident),
-        colon_token: node.colon_token,
-        ty: Box::new(f.fold_type(*node.ty)),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_foreign_item_type<F>(f: &mut F, node: ForeignItemType) -> ForeignItemType
-where
-    F: Fold + ?Sized,
-{
-    ForeignItemType {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        type_token: node.type_token,
-        ident: f.fold_ident(node.ident),
-        generics: f.fold_generics(node.generics),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_generic_argument<F>(f: &mut F, node: GenericArgument) -> GenericArgument
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        GenericArgument::Lifetime(_binding_0) => {
-            GenericArgument::Lifetime(f.fold_lifetime(_binding_0))
-        }
-        GenericArgument::Type(_binding_0) => {
-            GenericArgument::Type(f.fold_type(_binding_0))
-        }
-        GenericArgument::Const(_binding_0) => {
-            GenericArgument::Const(f.fold_expr(_binding_0))
-        }
-        GenericArgument::AssocType(_binding_0) => {
-            GenericArgument::AssocType(f.fold_assoc_type(_binding_0))
-        }
-        GenericArgument::AssocConst(_binding_0) => {
-            GenericArgument::AssocConst(f.fold_assoc_const(_binding_0))
-        }
-        GenericArgument::Constraint(_binding_0) => {
-            GenericArgument::Constraint(f.fold_constraint(_binding_0))
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_generic_param<F>(f: &mut F, node: GenericParam) -> GenericParam
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        GenericParam::Lifetime(_binding_0) => {
-            GenericParam::Lifetime(f.fold_lifetime_param(_binding_0))
-        }
-        GenericParam::Type(_binding_0) => {
-            GenericParam::Type(f.fold_type_param(_binding_0))
-        }
-        GenericParam::Const(_binding_0) => {
-            GenericParam::Const(f.fold_const_param(_binding_0))
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_generics<F>(f: &mut F, node: Generics) -> Generics
-where
-    F: Fold + ?Sized,
-{
-    Generics {
-        lt_token: node.lt_token,
-        params: FoldHelper::lift(node.params, |it| f.fold_generic_param(it)),
-        gt_token: node.gt_token,
-        where_clause: (node.where_clause).map(|it| f.fold_where_clause(it)),
-    }
-}
-pub fn fold_ident<F>(f: &mut F, node: Ident) -> Ident
-where
-    F: Fold + ?Sized,
-{
-    let mut node = node;
-    let span = f.fold_span(node.span());
-    node.set_span(span);
-    node
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_impl_item<F>(f: &mut F, node: ImplItem) -> ImplItem
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        ImplItem::Const(_binding_0) => {
-            ImplItem::Const(f.fold_impl_item_const(_binding_0))
-        }
-        ImplItem::Fn(_binding_0) => ImplItem::Fn(f.fold_impl_item_fn(_binding_0)),
-        ImplItem::Type(_binding_0) => ImplItem::Type(f.fold_impl_item_type(_binding_0)),
-        ImplItem::Macro(_binding_0) => {
-            ImplItem::Macro(f.fold_impl_item_macro(_binding_0))
-        }
-        ImplItem::Verbatim(_binding_0) => ImplItem::Verbatim(_binding_0),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_impl_item_const<F>(f: &mut F, node: ImplItemConst) -> ImplItemConst
-where
-    F: Fold + ?Sized,
-{
-    ImplItemConst {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        defaultness: node.defaultness,
-        const_token: node.const_token,
-        ident: f.fold_ident(node.ident),
-        generics: f.fold_generics(node.generics),
-        colon_token: node.colon_token,
-        ty: f.fold_type(node.ty),
-        eq_token: node.eq_token,
-        expr: f.fold_expr(node.expr),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_impl_item_fn<F>(f: &mut F, node: ImplItemFn) -> ImplItemFn
-where
-    F: Fold + ?Sized,
-{
-    ImplItemFn {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        defaultness: node.defaultness,
-        sig: f.fold_signature(node.sig),
-        block: f.fold_block(node.block),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_impl_item_macro<F>(f: &mut F, node: ImplItemMacro) -> ImplItemMacro
-where
-    F: Fold + ?Sized,
-{
-    ImplItemMacro {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        mac: f.fold_macro(node.mac),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_impl_item_type<F>(f: &mut F, node: ImplItemType) -> ImplItemType
-where
-    F: Fold + ?Sized,
-{
-    ImplItemType {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        defaultness: node.defaultness,
-        type_token: node.type_token,
-        ident: f.fold_ident(node.ident),
-        generics: f.fold_generics(node.generics),
-        eq_token: node.eq_token,
-        ty: f.fold_type(node.ty),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_impl_restriction<F>(f: &mut F, node: ImplRestriction) -> ImplRestriction
-where
-    F: Fold + ?Sized,
-{
-    match node {}
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_index<F>(f: &mut F, node: Index) -> Index
-where
-    F: Fold + ?Sized,
-{
-    Index {
-        index: node.index,
-        span: f.fold_span(node.span),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item<F>(f: &mut F, node: Item) -> Item
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        Item::Const(_binding_0) => Item::Const(f.fold_item_const(_binding_0)),
-        Item::Enum(_binding_0) => Item::Enum(f.fold_item_enum(_binding_0)),
-        Item::ExternCrate(_binding_0) => {
-            Item::ExternCrate(f.fold_item_extern_crate(_binding_0))
-        }
-        Item::Fn(_binding_0) => Item::Fn(f.fold_item_fn(_binding_0)),
-        Item::ForeignMod(_binding_0) => {
-            Item::ForeignMod(f.fold_item_foreign_mod(_binding_0))
-        }
-        Item::Impl(_binding_0) => Item::Impl(f.fold_item_impl(_binding_0)),
-        Item::Macro(_binding_0) => Item::Macro(f.fold_item_macro(_binding_0)),
-        Item::Mod(_binding_0) => Item::Mod(f.fold_item_mod(_binding_0)),
-        Item::Static(_binding_0) => Item::Static(f.fold_item_static(_binding_0)),
-        Item::Struct(_binding_0) => Item::Struct(f.fold_item_struct(_binding_0)),
-        Item::Trait(_binding_0) => Item::Trait(f.fold_item_trait(_binding_0)),
-        Item::TraitAlias(_binding_0) => {
-            Item::TraitAlias(f.fold_item_trait_alias(_binding_0))
-        }
-        Item::Type(_binding_0) => Item::Type(f.fold_item_type(_binding_0)),
-        Item::Union(_binding_0) => Item::Union(f.fold_item_union(_binding_0)),
-        Item::Use(_binding_0) => Item::Use(f.fold_item_use(_binding_0)),
-        Item::Verbatim(_binding_0) => Item::Verbatim(_binding_0),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item_const<F>(f: &mut F, node: ItemConst) -> ItemConst
-where
-    F: Fold + ?Sized,
-{
-    ItemConst {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        const_token: node.const_token,
-        ident: f.fold_ident(node.ident),
-        generics: f.fold_generics(node.generics),
-        colon_token: node.colon_token,
-        ty: Box::new(f.fold_type(*node.ty)),
-        eq_token: node.eq_token,
-        expr: Box::new(f.fold_expr(*node.expr)),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item_enum<F>(f: &mut F, node: ItemEnum) -> ItemEnum
-where
-    F: Fold + ?Sized,
-{
-    ItemEnum {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        enum_token: node.enum_token,
-        ident: f.fold_ident(node.ident),
-        generics: f.fold_generics(node.generics),
-        brace_token: node.brace_token,
-        variants: FoldHelper::lift(node.variants, |it| f.fold_variant(it)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item_extern_crate<F>(f: &mut F, node: ItemExternCrate) -> ItemExternCrate
-where
-    F: Fold + ?Sized,
-{
-    ItemExternCrate {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        extern_token: node.extern_token,
-        crate_token: node.crate_token,
-        ident: f.fold_ident(node.ident),
-        rename: (node.rename).map(|it| ((it).0, f.fold_ident((it).1))),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item_fn<F>(f: &mut F, node: ItemFn) -> ItemFn
-where
-    F: Fold + ?Sized,
-{
-    ItemFn {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        sig: f.fold_signature(node.sig),
-        block: Box::new(f.fold_block(*node.block)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item_foreign_mod<F>(f: &mut F, node: ItemForeignMod) -> ItemForeignMod
-where
-    F: Fold + ?Sized,
-{
-    ItemForeignMod {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        unsafety: node.unsafety,
-        abi: f.fold_abi(node.abi),
-        brace_token: node.brace_token,
-        items: FoldHelper::lift(node.items, |it| f.fold_foreign_item(it)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item_impl<F>(f: &mut F, node: ItemImpl) -> ItemImpl
-where
-    F: Fold + ?Sized,
-{
-    ItemImpl {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        defaultness: node.defaultness,
-        unsafety: node.unsafety,
-        impl_token: node.impl_token,
-        generics: f.fold_generics(node.generics),
-        trait_: (node.trait_).map(|it| ((it).0, f.fold_path((it).1), (it).2)),
-        self_ty: Box::new(f.fold_type(*node.self_ty)),
-        brace_token: node.brace_token,
-        items: FoldHelper::lift(node.items, |it| f.fold_impl_item(it)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item_macro<F>(f: &mut F, node: ItemMacro) -> ItemMacro
-where
-    F: Fold + ?Sized,
-{
-    ItemMacro {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        ident: (node.ident).map(|it| f.fold_ident(it)),
-        mac: f.fold_macro(node.mac),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item_mod<F>(f: &mut F, node: ItemMod) -> ItemMod
-where
-    F: Fold + ?Sized,
-{
-    ItemMod {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        unsafety: node.unsafety,
-        mod_token: node.mod_token,
-        ident: f.fold_ident(node.ident),
-        content: (node.content)
-            .map(|it| ((it).0, FoldHelper::lift((it).1, |it| f.fold_item(it)))),
-        semi: node.semi,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item_static<F>(f: &mut F, node: ItemStatic) -> ItemStatic
-where
-    F: Fold + ?Sized,
-{
-    ItemStatic {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        static_token: node.static_token,
-        mutability: f.fold_static_mutability(node.mutability),
-        ident: f.fold_ident(node.ident),
-        colon_token: node.colon_token,
-        ty: Box::new(f.fold_type(*node.ty)),
-        eq_token: node.eq_token,
-        expr: Box::new(f.fold_expr(*node.expr)),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item_struct<F>(f: &mut F, node: ItemStruct) -> ItemStruct
-where
-    F: Fold + ?Sized,
-{
-    ItemStruct {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        struct_token: node.struct_token,
-        ident: f.fold_ident(node.ident),
-        generics: f.fold_generics(node.generics),
-        fields: f.fold_fields(node.fields),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item_trait<F>(f: &mut F, node: ItemTrait) -> ItemTrait
-where
-    F: Fold + ?Sized,
-{
-    ItemTrait {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        unsafety: node.unsafety,
-        auto_token: node.auto_token,
-        restriction: (node.restriction).map(|it| f.fold_impl_restriction(it)),
-        trait_token: node.trait_token,
-        ident: f.fold_ident(node.ident),
-        generics: f.fold_generics(node.generics),
-        colon_token: node.colon_token,
-        supertraits: FoldHelper::lift(
-            node.supertraits,
-            |it| f.fold_type_param_bound(it),
-        ),
-        brace_token: node.brace_token,
-        items: FoldHelper::lift(node.items, |it| f.fold_trait_item(it)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item_trait_alias<F>(f: &mut F, node: ItemTraitAlias) -> ItemTraitAlias
-where
-    F: Fold + ?Sized,
-{
-    ItemTraitAlias {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        trait_token: node.trait_token,
-        ident: f.fold_ident(node.ident),
-        generics: f.fold_generics(node.generics),
-        eq_token: node.eq_token,
-        bounds: FoldHelper::lift(node.bounds, |it| f.fold_type_param_bound(it)),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item_type<F>(f: &mut F, node: ItemType) -> ItemType
-where
-    F: Fold + ?Sized,
-{
-    ItemType {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        type_token: node.type_token,
-        ident: f.fold_ident(node.ident),
-        generics: f.fold_generics(node.generics),
-        eq_token: node.eq_token,
-        ty: Box::new(f.fold_type(*node.ty)),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item_union<F>(f: &mut F, node: ItemUnion) -> ItemUnion
-where
-    F: Fold + ?Sized,
-{
-    ItemUnion {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        union_token: node.union_token,
-        ident: f.fold_ident(node.ident),
-        generics: f.fold_generics(node.generics),
-        fields: f.fold_fields_named(node.fields),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_item_use<F>(f: &mut F, node: ItemUse) -> ItemUse
-where
-    F: Fold + ?Sized,
-{
-    ItemUse {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        vis: f.fold_visibility(node.vis),
-        use_token: node.use_token,
-        leading_colon: node.leading_colon,
-        tree: f.fold_use_tree(node.tree),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_label<F>(f: &mut F, node: Label) -> Label
-where
-    F: Fold + ?Sized,
-{
-    Label {
-        name: f.fold_lifetime(node.name),
-        colon_token: node.colon_token,
-    }
-}
-pub fn fold_lifetime<F>(f: &mut F, node: Lifetime) -> Lifetime
-where
-    F: Fold + ?Sized,
-{
-    Lifetime {
-        apostrophe: f.fold_span(node.apostrophe),
-        ident: f.fold_ident(node.ident),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_lifetime_param<F>(f: &mut F, node: LifetimeParam) -> LifetimeParam
-where
-    F: Fold + ?Sized,
-{
-    LifetimeParam {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        lifetime: f.fold_lifetime(node.lifetime),
-        colon_token: node.colon_token,
-        bounds: FoldHelper::lift(node.bounds, |it| f.fold_lifetime(it)),
-    }
-}
-pub fn fold_lit<F>(f: &mut F, node: Lit) -> Lit
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        Lit::Str(_binding_0) => Lit::Str(f.fold_lit_str(_binding_0)),
-        Lit::ByteStr(_binding_0) => Lit::ByteStr(f.fold_lit_byte_str(_binding_0)),
-        Lit::Byte(_binding_0) => Lit::Byte(f.fold_lit_byte(_binding_0)),
-        Lit::Char(_binding_0) => Lit::Char(f.fold_lit_char(_binding_0)),
-        Lit::Int(_binding_0) => Lit::Int(f.fold_lit_int(_binding_0)),
-        Lit::Float(_binding_0) => Lit::Float(f.fold_lit_float(_binding_0)),
-        Lit::Bool(_binding_0) => Lit::Bool(f.fold_lit_bool(_binding_0)),
-        Lit::Verbatim(_binding_0) => Lit::Verbatim(_binding_0),
-    }
-}
-pub fn fold_lit_bool<F>(f: &mut F, node: LitBool) -> LitBool
-where
-    F: Fold + ?Sized,
-{
-    LitBool {
-        value: node.value,
-        span: f.fold_span(node.span),
-    }
-}
-pub fn fold_lit_byte<F>(f: &mut F, node: LitByte) -> LitByte
-where
-    F: Fold + ?Sized,
-{
-    let span = f.fold_span(node.span());
-    let mut node = node;
-    node.set_span(span);
-    node
-}
-pub fn fold_lit_byte_str<F>(f: &mut F, node: LitByteStr) -> LitByteStr
-where
-    F: Fold + ?Sized,
-{
-    let span = f.fold_span(node.span());
-    let mut node = node;
-    node.set_span(span);
-    node
-}
-pub fn fold_lit_char<F>(f: &mut F, node: LitChar) -> LitChar
-where
-    F: Fold + ?Sized,
-{
-    let span = f.fold_span(node.span());
-    let mut node = node;
-    node.set_span(span);
-    node
-}
-pub fn fold_lit_float<F>(f: &mut F, node: LitFloat) -> LitFloat
-where
-    F: Fold + ?Sized,
-{
-    let span = f.fold_span(node.span());
-    let mut node = node;
-    node.set_span(span);
-    node
-}
-pub fn fold_lit_int<F>(f: &mut F, node: LitInt) -> LitInt
-where
-    F: Fold + ?Sized,
-{
-    let span = f.fold_span(node.span());
-    let mut node = node;
-    node.set_span(span);
-    node
-}
-pub fn fold_lit_str<F>(f: &mut F, node: LitStr) -> LitStr
-where
-    F: Fold + ?Sized,
-{
-    let span = f.fold_span(node.span());
-    let mut node = node;
-    node.set_span(span);
-    node
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_local<F>(f: &mut F, node: Local) -> Local
-where
-    F: Fold + ?Sized,
-{
-    Local {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        let_token: node.let_token,
-        pat: f.fold_pat(node.pat),
-        init: (node.init).map(|it| f.fold_local_init(it)),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_local_init<F>(f: &mut F, node: LocalInit) -> LocalInit
-where
-    F: Fold + ?Sized,
-{
-    LocalInit {
-        eq_token: node.eq_token,
-        expr: Box::new(f.fold_expr(*node.expr)),
-        diverge: (node.diverge).map(|it| ((it).0, Box::new(f.fold_expr(*(it).1)))),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_macro<F>(f: &mut F, node: Macro) -> Macro
-where
-    F: Fold + ?Sized,
-{
-    Macro {
-        path: f.fold_path(node.path),
-        bang_token: node.bang_token,
-        delimiter: f.fold_macro_delimiter(node.delimiter),
-        tokens: node.tokens,
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_macro_delimiter<F>(f: &mut F, node: MacroDelimiter) -> MacroDelimiter
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        MacroDelimiter::Paren(_binding_0) => MacroDelimiter::Paren(_binding_0),
-        MacroDelimiter::Brace(_binding_0) => MacroDelimiter::Brace(_binding_0),
-        MacroDelimiter::Bracket(_binding_0) => MacroDelimiter::Bracket(_binding_0),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_member<F>(f: &mut F, node: Member) -> Member
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        Member::Named(_binding_0) => Member::Named(f.fold_ident(_binding_0)),
-        Member::Unnamed(_binding_0) => Member::Unnamed(f.fold_index(_binding_0)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_meta<F>(f: &mut F, node: Meta) -> Meta
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        Meta::Path(_binding_0) => Meta::Path(f.fold_path(_binding_0)),
-        Meta::List(_binding_0) => Meta::List(f.fold_meta_list(_binding_0)),
-        Meta::NameValue(_binding_0) => {
-            Meta::NameValue(f.fold_meta_name_value(_binding_0))
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_meta_list<F>(f: &mut F, node: MetaList) -> MetaList
-where
-    F: Fold + ?Sized,
-{
-    MetaList {
-        path: f.fold_path(node.path),
-        delimiter: f.fold_macro_delimiter(node.delimiter),
-        tokens: node.tokens,
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_meta_name_value<F>(f: &mut F, node: MetaNameValue) -> MetaNameValue
-where
-    F: Fold + ?Sized,
-{
-    MetaNameValue {
-        path: f.fold_path(node.path),
-        eq_token: node.eq_token,
-        value: f.fold_expr(node.value),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_parenthesized_generic_arguments<F>(
-    f: &mut F,
-    node: ParenthesizedGenericArguments,
-) -> ParenthesizedGenericArguments
-where
-    F: Fold + ?Sized,
-{
-    ParenthesizedGenericArguments {
-        paren_token: node.paren_token,
-        inputs: FoldHelper::lift(node.inputs, |it| f.fold_type(it)),
-        output: f.fold_return_type(node.output),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_pat<F>(f: &mut F, node: Pat) -> Pat
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        Pat::Const(_binding_0) => Pat::Const(f.fold_expr_const(_binding_0)),
-        Pat::Ident(_binding_0) => Pat::Ident(f.fold_pat_ident(_binding_0)),
-        Pat::Lit(_binding_0) => Pat::Lit(f.fold_expr_lit(_binding_0)),
-        Pat::Macro(_binding_0) => Pat::Macro(f.fold_expr_macro(_binding_0)),
-        Pat::Or(_binding_0) => Pat::Or(f.fold_pat_or(_binding_0)),
-        Pat::Paren(_binding_0) => Pat::Paren(f.fold_pat_paren(_binding_0)),
-        Pat::Path(_binding_0) => Pat::Path(f.fold_expr_path(_binding_0)),
-        Pat::Range(_binding_0) => Pat::Range(f.fold_expr_range(_binding_0)),
-        Pat::Reference(_binding_0) => Pat::Reference(f.fold_pat_reference(_binding_0)),
-        Pat::Rest(_binding_0) => Pat::Rest(f.fold_pat_rest(_binding_0)),
-        Pat::Slice(_binding_0) => Pat::Slice(f.fold_pat_slice(_binding_0)),
-        Pat::Struct(_binding_0) => Pat::Struct(f.fold_pat_struct(_binding_0)),
-        Pat::Tuple(_binding_0) => Pat::Tuple(f.fold_pat_tuple(_binding_0)),
-        Pat::TupleStruct(_binding_0) => {
-            Pat::TupleStruct(f.fold_pat_tuple_struct(_binding_0))
-        }
-        Pat::Type(_binding_0) => Pat::Type(f.fold_pat_type(_binding_0)),
-        Pat::Verbatim(_binding_0) => Pat::Verbatim(_binding_0),
-        Pat::Wild(_binding_0) => Pat::Wild(f.fold_pat_wild(_binding_0)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_pat_ident<F>(f: &mut F, node: PatIdent) -> PatIdent
-where
-    F: Fold + ?Sized,
-{
-    PatIdent {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        by_ref: node.by_ref,
-        mutability: node.mutability,
-        ident: f.fold_ident(node.ident),
-        subpat: (node.subpat).map(|it| ((it).0, Box::new(f.fold_pat(*(it).1)))),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_pat_or<F>(f: &mut F, node: PatOr) -> PatOr
-where
-    F: Fold + ?Sized,
-{
-    PatOr {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        leading_vert: node.leading_vert,
-        cases: FoldHelper::lift(node.cases, |it| f.fold_pat(it)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_pat_paren<F>(f: &mut F, node: PatParen) -> PatParen
-where
-    F: Fold + ?Sized,
-{
-    PatParen {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        paren_token: node.paren_token,
-        pat: Box::new(f.fold_pat(*node.pat)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_pat_reference<F>(f: &mut F, node: PatReference) -> PatReference
-where
-    F: Fold + ?Sized,
-{
-    PatReference {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        and_token: node.and_token,
-        mutability: node.mutability,
-        pat: Box::new(f.fold_pat(*node.pat)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_pat_rest<F>(f: &mut F, node: PatRest) -> PatRest
-where
-    F: Fold + ?Sized,
-{
-    PatRest {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        dot2_token: node.dot2_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_pat_slice<F>(f: &mut F, node: PatSlice) -> PatSlice
-where
-    F: Fold + ?Sized,
-{
-    PatSlice {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        bracket_token: node.bracket_token,
-        elems: FoldHelper::lift(node.elems, |it| f.fold_pat(it)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_pat_struct<F>(f: &mut F, node: PatStruct) -> PatStruct
-where
-    F: Fold + ?Sized,
-{
-    PatStruct {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        qself: (node.qself).map(|it| f.fold_qself(it)),
-        path: f.fold_path(node.path),
-        brace_token: node.brace_token,
-        fields: FoldHelper::lift(node.fields, |it| f.fold_field_pat(it)),
-        rest: (node.rest).map(|it| f.fold_pat_rest(it)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_pat_tuple<F>(f: &mut F, node: PatTuple) -> PatTuple
-where
-    F: Fold + ?Sized,
-{
-    PatTuple {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        paren_token: node.paren_token,
-        elems: FoldHelper::lift(node.elems, |it| f.fold_pat(it)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_pat_tuple_struct<F>(f: &mut F, node: PatTupleStruct) -> PatTupleStruct
-where
-    F: Fold + ?Sized,
-{
-    PatTupleStruct {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        qself: (node.qself).map(|it| f.fold_qself(it)),
-        path: f.fold_path(node.path),
-        paren_token: node.paren_token,
-        elems: FoldHelper::lift(node.elems, |it| f.fold_pat(it)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_pat_type<F>(f: &mut F, node: PatType) -> PatType
-where
-    F: Fold + ?Sized,
-{
-    PatType {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        pat: Box::new(f.fold_pat(*node.pat)),
-        colon_token: node.colon_token,
-        ty: Box::new(f.fold_type(*node.ty)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_pat_wild<F>(f: &mut F, node: PatWild) -> PatWild
-where
-    F: Fold + ?Sized,
-{
-    PatWild {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        underscore_token: node.underscore_token,
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_path<F>(f: &mut F, node: Path) -> Path
-where
-    F: Fold + ?Sized,
-{
-    Path {
-        leading_colon: node.leading_colon,
-        segments: FoldHelper::lift(node.segments, |it| f.fold_path_segment(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_path_arguments<F>(f: &mut F, node: PathArguments) -> PathArguments
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        PathArguments::None => PathArguments::None,
-        PathArguments::AngleBracketed(_binding_0) => {
-            PathArguments::AngleBracketed(
-                f.fold_angle_bracketed_generic_arguments(_binding_0),
-            )
-        }
-        PathArguments::Parenthesized(_binding_0) => {
-            PathArguments::Parenthesized(
-                f.fold_parenthesized_generic_arguments(_binding_0),
-            )
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_path_segment<F>(f: &mut F, node: PathSegment) -> PathSegment
-where
-    F: Fold + ?Sized,
-{
-    PathSegment {
-        ident: f.fold_ident(node.ident),
-        arguments: f.fold_path_arguments(node.arguments),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_predicate_lifetime<F>(
-    f: &mut F,
-    node: PredicateLifetime,
-) -> PredicateLifetime
-where
-    F: Fold + ?Sized,
-{
-    PredicateLifetime {
-        lifetime: f.fold_lifetime(node.lifetime),
-        colon_token: node.colon_token,
-        bounds: FoldHelper::lift(node.bounds, |it| f.fold_lifetime(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_predicate_type<F>(f: &mut F, node: PredicateType) -> PredicateType
-where
-    F: Fold + ?Sized,
-{
-    PredicateType {
-        lifetimes: (node.lifetimes).map(|it| f.fold_bound_lifetimes(it)),
-        bounded_ty: f.fold_type(node.bounded_ty),
-        colon_token: node.colon_token,
-        bounds: FoldHelper::lift(node.bounds, |it| f.fold_type_param_bound(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_qself<F>(f: &mut F, node: QSelf) -> QSelf
-where
-    F: Fold + ?Sized,
-{
-    QSelf {
-        lt_token: node.lt_token,
-        ty: Box::new(f.fold_type(*node.ty)),
-        position: node.position,
-        as_token: node.as_token,
-        gt_token: node.gt_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_range_limits<F>(f: &mut F, node: RangeLimits) -> RangeLimits
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        RangeLimits::HalfOpen(_binding_0) => RangeLimits::HalfOpen(_binding_0),
-        RangeLimits::Closed(_binding_0) => RangeLimits::Closed(_binding_0),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_receiver<F>(f: &mut F, node: Receiver) -> Receiver
-where
-    F: Fold + ?Sized,
-{
-    Receiver {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        reference: (node.reference)
-            .map(|it| ((it).0, ((it).1).map(|it| f.fold_lifetime(it)))),
-        mutability: node.mutability,
-        self_token: node.self_token,
-        colon_token: node.colon_token,
-        ty: Box::new(f.fold_type(*node.ty)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_return_type<F>(f: &mut F, node: ReturnType) -> ReturnType
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        ReturnType::Default => ReturnType::Default,
-        ReturnType::Type(_binding_0, _binding_1) => {
-            ReturnType::Type(_binding_0, Box::new(f.fold_type(*_binding_1)))
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_signature<F>(f: &mut F, node: Signature) -> Signature
-where
-    F: Fold + ?Sized,
-{
-    Signature {
-        constness: node.constness,
-        asyncness: node.asyncness,
-        unsafety: node.unsafety,
-        abi: (node.abi).map(|it| f.fold_abi(it)),
-        fn_token: node.fn_token,
-        ident: f.fold_ident(node.ident),
-        generics: f.fold_generics(node.generics),
-        paren_token: node.paren_token,
-        inputs: FoldHelper::lift(node.inputs, |it| f.fold_fn_arg(it)),
-        variadic: (node.variadic).map(|it| f.fold_variadic(it)),
-        output: f.fold_return_type(node.output),
-    }
-}
-pub fn fold_span<F>(f: &mut F, node: Span) -> Span
-where
-    F: Fold + ?Sized,
-{
-    node
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_static_mutability<F>(f: &mut F, node: StaticMutability) -> StaticMutability
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        StaticMutability::Mut(_binding_0) => StaticMutability::Mut(_binding_0),
-        StaticMutability::None => StaticMutability::None,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_stmt<F>(f: &mut F, node: Stmt) -> Stmt
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        Stmt::Local(_binding_0) => Stmt::Local(f.fold_local(_binding_0)),
-        Stmt::Item(_binding_0) => Stmt::Item(f.fold_item(_binding_0)),
-        Stmt::Expr(_binding_0, _binding_1) => {
-            Stmt::Expr(f.fold_expr(_binding_0), _binding_1)
-        }
-        Stmt::Macro(_binding_0) => Stmt::Macro(f.fold_stmt_macro(_binding_0)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_stmt_macro<F>(f: &mut F, node: StmtMacro) -> StmtMacro
-where
-    F: Fold + ?Sized,
-{
-    StmtMacro {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        mac: f.fold_macro(node.mac),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_trait_bound<F>(f: &mut F, node: TraitBound) -> TraitBound
-where
-    F: Fold + ?Sized,
-{
-    TraitBound {
-        paren_token: node.paren_token,
-        modifier: f.fold_trait_bound_modifier(node.modifier),
-        lifetimes: (node.lifetimes).map(|it| f.fold_bound_lifetimes(it)),
-        path: f.fold_path(node.path),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_trait_bound_modifier<F>(
-    f: &mut F,
-    node: TraitBoundModifier,
-) -> TraitBoundModifier
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        TraitBoundModifier::None => TraitBoundModifier::None,
-        TraitBoundModifier::Maybe(_binding_0) => TraitBoundModifier::Maybe(_binding_0),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_trait_item<F>(f: &mut F, node: TraitItem) -> TraitItem
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        TraitItem::Const(_binding_0) => {
-            TraitItem::Const(f.fold_trait_item_const(_binding_0))
-        }
-        TraitItem::Fn(_binding_0) => TraitItem::Fn(f.fold_trait_item_fn(_binding_0)),
-        TraitItem::Type(_binding_0) => {
-            TraitItem::Type(f.fold_trait_item_type(_binding_0))
-        }
-        TraitItem::Macro(_binding_0) => {
-            TraitItem::Macro(f.fold_trait_item_macro(_binding_0))
-        }
-        TraitItem::Verbatim(_binding_0) => TraitItem::Verbatim(_binding_0),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_trait_item_const<F>(f: &mut F, node: TraitItemConst) -> TraitItemConst
-where
-    F: Fold + ?Sized,
-{
-    TraitItemConst {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        const_token: node.const_token,
-        ident: f.fold_ident(node.ident),
-        generics: f.fold_generics(node.generics),
-        colon_token: node.colon_token,
-        ty: f.fold_type(node.ty),
-        default: (node.default).map(|it| ((it).0, f.fold_expr((it).1))),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_trait_item_fn<F>(f: &mut F, node: TraitItemFn) -> TraitItemFn
-where
-    F: Fold + ?Sized,
-{
-    TraitItemFn {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        sig: f.fold_signature(node.sig),
-        default: (node.default).map(|it| f.fold_block(it)),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_trait_item_macro<F>(f: &mut F, node: TraitItemMacro) -> TraitItemMacro
-where
-    F: Fold + ?Sized,
-{
-    TraitItemMacro {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        mac: f.fold_macro(node.mac),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_trait_item_type<F>(f: &mut F, node: TraitItemType) -> TraitItemType
-where
-    F: Fold + ?Sized,
-{
-    TraitItemType {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        type_token: node.type_token,
-        ident: f.fold_ident(node.ident),
-        generics: f.fold_generics(node.generics),
-        colon_token: node.colon_token,
-        bounds: FoldHelper::lift(node.bounds, |it| f.fold_type_param_bound(it)),
-        default: (node.default).map(|it| ((it).0, f.fold_type((it).1))),
-        semi_token: node.semi_token,
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type<F>(f: &mut F, node: Type) -> Type
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        Type::Array(_binding_0) => Type::Array(f.fold_type_array(_binding_0)),
-        Type::BareFn(_binding_0) => Type::BareFn(f.fold_type_bare_fn(_binding_0)),
-        Type::Group(_binding_0) => Type::Group(f.fold_type_group(_binding_0)),
-        Type::ImplTrait(_binding_0) => {
-            Type::ImplTrait(f.fold_type_impl_trait(_binding_0))
-        }
-        Type::Infer(_binding_0) => Type::Infer(f.fold_type_infer(_binding_0)),
-        Type::Macro(_binding_0) => Type::Macro(f.fold_type_macro(_binding_0)),
-        Type::Never(_binding_0) => Type::Never(f.fold_type_never(_binding_0)),
-        Type::Paren(_binding_0) => Type::Paren(f.fold_type_paren(_binding_0)),
-        Type::Path(_binding_0) => Type::Path(f.fold_type_path(_binding_0)),
-        Type::Ptr(_binding_0) => Type::Ptr(f.fold_type_ptr(_binding_0)),
-        Type::Reference(_binding_0) => Type::Reference(f.fold_type_reference(_binding_0)),
-        Type::Slice(_binding_0) => Type::Slice(f.fold_type_slice(_binding_0)),
-        Type::TraitObject(_binding_0) => {
-            Type::TraitObject(f.fold_type_trait_object(_binding_0))
-        }
-        Type::Tuple(_binding_0) => Type::Tuple(f.fold_type_tuple(_binding_0)),
-        Type::Verbatim(_binding_0) => Type::Verbatim(_binding_0),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_array<F>(f: &mut F, node: TypeArray) -> TypeArray
-where
-    F: Fold + ?Sized,
-{
-    TypeArray {
-        bracket_token: node.bracket_token,
-        elem: Box::new(f.fold_type(*node.elem)),
-        semi_token: node.semi_token,
-        len: f.fold_expr(node.len),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_bare_fn<F>(f: &mut F, node: TypeBareFn) -> TypeBareFn
-where
-    F: Fold + ?Sized,
-{
-    TypeBareFn {
-        lifetimes: (node.lifetimes).map(|it| f.fold_bound_lifetimes(it)),
-        unsafety: node.unsafety,
-        abi: (node.abi).map(|it| f.fold_abi(it)),
-        fn_token: node.fn_token,
-        paren_token: node.paren_token,
-        inputs: FoldHelper::lift(node.inputs, |it| f.fold_bare_fn_arg(it)),
-        variadic: (node.variadic).map(|it| f.fold_bare_variadic(it)),
-        output: f.fold_return_type(node.output),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_group<F>(f: &mut F, node: TypeGroup) -> TypeGroup
-where
-    F: Fold + ?Sized,
-{
-    TypeGroup {
-        group_token: node.group_token,
-        elem: Box::new(f.fold_type(*node.elem)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_impl_trait<F>(f: &mut F, node: TypeImplTrait) -> TypeImplTrait
-where
-    F: Fold + ?Sized,
-{
-    TypeImplTrait {
-        impl_token: node.impl_token,
-        bounds: FoldHelper::lift(node.bounds, |it| f.fold_type_param_bound(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_infer<F>(f: &mut F, node: TypeInfer) -> TypeInfer
-where
-    F: Fold + ?Sized,
-{
-    TypeInfer {
-        underscore_token: node.underscore_token,
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_macro<F>(f: &mut F, node: TypeMacro) -> TypeMacro
-where
-    F: Fold + ?Sized,
-{
-    TypeMacro {
-        mac: f.fold_macro(node.mac),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_never<F>(f: &mut F, node: TypeNever) -> TypeNever
-where
-    F: Fold + ?Sized,
-{
-    TypeNever {
-        bang_token: node.bang_token,
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_param<F>(f: &mut F, node: TypeParam) -> TypeParam
-where
-    F: Fold + ?Sized,
-{
-    TypeParam {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        ident: f.fold_ident(node.ident),
-        colon_token: node.colon_token,
-        bounds: FoldHelper::lift(node.bounds, |it| f.fold_type_param_bound(it)),
-        eq_token: node.eq_token,
-        default: (node.default).map(|it| f.fold_type(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_param_bound<F>(f: &mut F, node: TypeParamBound) -> TypeParamBound
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        TypeParamBound::Trait(_binding_0) => {
-            TypeParamBound::Trait(f.fold_trait_bound(_binding_0))
-        }
-        TypeParamBound::Lifetime(_binding_0) => {
-            TypeParamBound::Lifetime(f.fold_lifetime(_binding_0))
-        }
-        TypeParamBound::Verbatim(_binding_0) => TypeParamBound::Verbatim(_binding_0),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_paren<F>(f: &mut F, node: TypeParen) -> TypeParen
-where
-    F: Fold + ?Sized,
-{
-    TypeParen {
-        paren_token: node.paren_token,
-        elem: Box::new(f.fold_type(*node.elem)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_path<F>(f: &mut F, node: TypePath) -> TypePath
-where
-    F: Fold + ?Sized,
-{
-    TypePath {
-        qself: (node.qself).map(|it| f.fold_qself(it)),
-        path: f.fold_path(node.path),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_ptr<F>(f: &mut F, node: TypePtr) -> TypePtr
-where
-    F: Fold + ?Sized,
-{
-    TypePtr {
-        star_token: node.star_token,
-        const_token: node.const_token,
-        mutability: node.mutability,
-        elem: Box::new(f.fold_type(*node.elem)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_reference<F>(f: &mut F, node: TypeReference) -> TypeReference
-where
-    F: Fold + ?Sized,
-{
-    TypeReference {
-        and_token: node.and_token,
-        lifetime: (node.lifetime).map(|it| f.fold_lifetime(it)),
-        mutability: node.mutability,
-        elem: Box::new(f.fold_type(*node.elem)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_slice<F>(f: &mut F, node: TypeSlice) -> TypeSlice
-where
-    F: Fold + ?Sized,
-{
-    TypeSlice {
-        bracket_token: node.bracket_token,
-        elem: Box::new(f.fold_type(*node.elem)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_trait_object<F>(f: &mut F, node: TypeTraitObject) -> TypeTraitObject
-where
-    F: Fold + ?Sized,
-{
-    TypeTraitObject {
-        dyn_token: node.dyn_token,
-        bounds: FoldHelper::lift(node.bounds, |it| f.fold_type_param_bound(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_type_tuple<F>(f: &mut F, node: TypeTuple) -> TypeTuple
-where
-    F: Fold + ?Sized,
-{
-    TypeTuple {
-        paren_token: node.paren_token,
-        elems: FoldHelper::lift(node.elems, |it| f.fold_type(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_un_op<F>(f: &mut F, node: UnOp) -> UnOp
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        UnOp::Deref(_binding_0) => UnOp::Deref(_binding_0),
-        UnOp::Not(_binding_0) => UnOp::Not(_binding_0),
-        UnOp::Neg(_binding_0) => UnOp::Neg(_binding_0),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_use_glob<F>(f: &mut F, node: UseGlob) -> UseGlob
-where
-    F: Fold + ?Sized,
-{
-    UseGlob {
-        star_token: node.star_token,
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_use_group<F>(f: &mut F, node: UseGroup) -> UseGroup
-where
-    F: Fold + ?Sized,
-{
-    UseGroup {
-        brace_token: node.brace_token,
-        items: FoldHelper::lift(node.items, |it| f.fold_use_tree(it)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_use_name<F>(f: &mut F, node: UseName) -> UseName
-where
-    F: Fold + ?Sized,
-{
-    UseName {
-        ident: f.fold_ident(node.ident),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_use_path<F>(f: &mut F, node: UsePath) -> UsePath
-where
-    F: Fold + ?Sized,
-{
-    UsePath {
-        ident: f.fold_ident(node.ident),
-        colon2_token: node.colon2_token,
-        tree: Box::new(f.fold_use_tree(*node.tree)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_use_rename<F>(f: &mut F, node: UseRename) -> UseRename
-where
-    F: Fold + ?Sized,
-{
-    UseRename {
-        ident: f.fold_ident(node.ident),
-        as_token: node.as_token,
-        rename: f.fold_ident(node.rename),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_use_tree<F>(f: &mut F, node: UseTree) -> UseTree
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        UseTree::Path(_binding_0) => UseTree::Path(f.fold_use_path(_binding_0)),
-        UseTree::Name(_binding_0) => UseTree::Name(f.fold_use_name(_binding_0)),
-        UseTree::Rename(_binding_0) => UseTree::Rename(f.fold_use_rename(_binding_0)),
-        UseTree::Glob(_binding_0) => UseTree::Glob(f.fold_use_glob(_binding_0)),
-        UseTree::Group(_binding_0) => UseTree::Group(f.fold_use_group(_binding_0)),
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn fold_variadic<F>(f: &mut F, node: Variadic) -> Variadic
-where
-    F: Fold + ?Sized,
-{
-    Variadic {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        pat: (node.pat).map(|it| (Box::new(f.fold_pat(*(it).0)), (it).1)),
-        dots: node.dots,
-        comma: node.comma,
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_variant<F>(f: &mut F, node: Variant) -> Variant
-where
-    F: Fold + ?Sized,
-{
-    Variant {
-        attrs: FoldHelper::lift(node.attrs, |it| f.fold_attribute(it)),
-        ident: f.fold_ident(node.ident),
-        fields: f.fold_fields(node.fields),
-        discriminant: (node.discriminant).map(|it| ((it).0, f.fold_expr((it).1))),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_vis_restricted<F>(f: &mut F, node: VisRestricted) -> VisRestricted
-where
-    F: Fold + ?Sized,
-{
-    VisRestricted {
-        pub_token: node.pub_token,
-        paren_token: node.paren_token,
-        in_token: node.in_token,
-        path: Box::new(f.fold_path(*node.path)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_visibility<F>(f: &mut F, node: Visibility) -> Visibility
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        Visibility::Public(_binding_0) => Visibility::Public(_binding_0),
-        Visibility::Restricted(_binding_0) => {
-            Visibility::Restricted(f.fold_vis_restricted(_binding_0))
-        }
-        Visibility::Inherited => Visibility::Inherited,
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_where_clause<F>(f: &mut F, node: WhereClause) -> WhereClause
-where
-    F: Fold + ?Sized,
-{
-    WhereClause {
-        where_token: node.where_token,
-        predicates: FoldHelper::lift(node.predicates, |it| f.fold_where_predicate(it)),
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn fold_where_predicate<F>(f: &mut F, node: WherePredicate) -> WherePredicate
-where
-    F: Fold + ?Sized,
-{
-    match node {
-        WherePredicate::Lifetime(_binding_0) => {
-            WherePredicate::Lifetime(f.fold_predicate_lifetime(_binding_0))
-        }
-        WherePredicate::Type(_binding_0) => {
-            WherePredicate::Type(f.fold_predicate_type(_binding_0))
-        }
-    }
-}
diff --git a/vendor/syn/src/gen/hash.rs b/vendor/syn/src/gen/hash.rs
deleted file mode 100644
index 1c75341..0000000
--- a/vendor/syn/src/gen/hash.rs
+++ /dev/null
@@ -1,2804 +0,0 @@
-// This file is @generated by syn-internal-codegen.
-// It is not intended for manual editing.
-
-#[cfg(any(feature = "derive", feature = "full"))]
-use crate::tt::TokenStreamHelper;
-use crate::*;
-use std::hash::{Hash, Hasher};
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Abi {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.name.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for AngleBracketedGenericArguments {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.colon2_token.hash(state);
-        self.args.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Arm {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.pat.hash(state);
-        self.guard.hash(state);
-        self.body.hash(state);
-        self.comma.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for AssocConst {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.value.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for AssocType {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.ty.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for AttrStyle {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            AttrStyle::Outer => {
-                state.write_u8(0u8);
-            }
-            AttrStyle::Inner(_) => {
-                state.write_u8(1u8);
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Attribute {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.style.hash(state);
-        self.meta.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for BareFnArg {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.name.hash(state);
-        self.ty.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for BareVariadic {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.name.hash(state);
-        self.comma.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for BinOp {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            BinOp::Add(_) => {
-                state.write_u8(0u8);
-            }
-            BinOp::Sub(_) => {
-                state.write_u8(1u8);
-            }
-            BinOp::Mul(_) => {
-                state.write_u8(2u8);
-            }
-            BinOp::Div(_) => {
-                state.write_u8(3u8);
-            }
-            BinOp::Rem(_) => {
-                state.write_u8(4u8);
-            }
-            BinOp::And(_) => {
-                state.write_u8(5u8);
-            }
-            BinOp::Or(_) => {
-                state.write_u8(6u8);
-            }
-            BinOp::BitXor(_) => {
-                state.write_u8(7u8);
-            }
-            BinOp::BitAnd(_) => {
-                state.write_u8(8u8);
-            }
-            BinOp::BitOr(_) => {
-                state.write_u8(9u8);
-            }
-            BinOp::Shl(_) => {
-                state.write_u8(10u8);
-            }
-            BinOp::Shr(_) => {
-                state.write_u8(11u8);
-            }
-            BinOp::Eq(_) => {
-                state.write_u8(12u8);
-            }
-            BinOp::Lt(_) => {
-                state.write_u8(13u8);
-            }
-            BinOp::Le(_) => {
-                state.write_u8(14u8);
-            }
-            BinOp::Ne(_) => {
-                state.write_u8(15u8);
-            }
-            BinOp::Ge(_) => {
-                state.write_u8(16u8);
-            }
-            BinOp::Gt(_) => {
-                state.write_u8(17u8);
-            }
-            BinOp::AddAssign(_) => {
-                state.write_u8(18u8);
-            }
-            BinOp::SubAssign(_) => {
-                state.write_u8(19u8);
-            }
-            BinOp::MulAssign(_) => {
-                state.write_u8(20u8);
-            }
-            BinOp::DivAssign(_) => {
-                state.write_u8(21u8);
-            }
-            BinOp::RemAssign(_) => {
-                state.write_u8(22u8);
-            }
-            BinOp::BitXorAssign(_) => {
-                state.write_u8(23u8);
-            }
-            BinOp::BitAndAssign(_) => {
-                state.write_u8(24u8);
-            }
-            BinOp::BitOrAssign(_) => {
-                state.write_u8(25u8);
-            }
-            BinOp::ShlAssign(_) => {
-                state.write_u8(26u8);
-            }
-            BinOp::ShrAssign(_) => {
-                state.write_u8(27u8);
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Block {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.stmts.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for BoundLifetimes {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.lifetimes.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ConstParam {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.ident.hash(state);
-        self.ty.hash(state);
-        self.eq_token.hash(state);
-        self.default.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Constraint {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.bounds.hash(state);
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Data {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            Data::Struct(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            Data::Enum(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            Data::Union(v0) => {
-                state.write_u8(2u8);
-                v0.hash(state);
-            }
-        }
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for DataEnum {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.variants.hash(state);
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for DataStruct {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.fields.hash(state);
-        self.semi_token.hash(state);
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for DataUnion {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.fields.hash(state);
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for DeriveInput {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.data.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Expr {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            #[cfg(feature = "full")]
-            Expr::Array(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Assign(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Async(v0) => {
-                state.write_u8(2u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Await(v0) => {
-                state.write_u8(3u8);
-                v0.hash(state);
-            }
-            Expr::Binary(v0) => {
-                state.write_u8(4u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Block(v0) => {
-                state.write_u8(5u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Break(v0) => {
-                state.write_u8(6u8);
-                v0.hash(state);
-            }
-            Expr::Call(v0) => {
-                state.write_u8(7u8);
-                v0.hash(state);
-            }
-            Expr::Cast(v0) => {
-                state.write_u8(8u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Closure(v0) => {
-                state.write_u8(9u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Const(v0) => {
-                state.write_u8(10u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Continue(v0) => {
-                state.write_u8(11u8);
-                v0.hash(state);
-            }
-            Expr::Field(v0) => {
-                state.write_u8(12u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::ForLoop(v0) => {
-                state.write_u8(13u8);
-                v0.hash(state);
-            }
-            Expr::Group(v0) => {
-                state.write_u8(14u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::If(v0) => {
-                state.write_u8(15u8);
-                v0.hash(state);
-            }
-            Expr::Index(v0) => {
-                state.write_u8(16u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Infer(v0) => {
-                state.write_u8(17u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Let(v0) => {
-                state.write_u8(18u8);
-                v0.hash(state);
-            }
-            Expr::Lit(v0) => {
-                state.write_u8(19u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Loop(v0) => {
-                state.write_u8(20u8);
-                v0.hash(state);
-            }
-            Expr::Macro(v0) => {
-                state.write_u8(21u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Match(v0) => {
-                state.write_u8(22u8);
-                v0.hash(state);
-            }
-            Expr::MethodCall(v0) => {
-                state.write_u8(23u8);
-                v0.hash(state);
-            }
-            Expr::Paren(v0) => {
-                state.write_u8(24u8);
-                v0.hash(state);
-            }
-            Expr::Path(v0) => {
-                state.write_u8(25u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Range(v0) => {
-                state.write_u8(26u8);
-                v0.hash(state);
-            }
-            Expr::Reference(v0) => {
-                state.write_u8(27u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Repeat(v0) => {
-                state.write_u8(28u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Return(v0) => {
-                state.write_u8(29u8);
-                v0.hash(state);
-            }
-            Expr::Struct(v0) => {
-                state.write_u8(30u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Try(v0) => {
-                state.write_u8(31u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::TryBlock(v0) => {
-                state.write_u8(32u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Tuple(v0) => {
-                state.write_u8(33u8);
-                v0.hash(state);
-            }
-            Expr::Unary(v0) => {
-                state.write_u8(34u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Unsafe(v0) => {
-                state.write_u8(35u8);
-                v0.hash(state);
-            }
-            Expr::Verbatim(v0) => {
-                state.write_u8(36u8);
-                TokenStreamHelper(v0).hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::While(v0) => {
-                state.write_u8(37u8);
-                v0.hash(state);
-            }
-            #[cfg(feature = "full")]
-            Expr::Yield(v0) => {
-                state.write_u8(38u8);
-                v0.hash(state);
-            }
-            #[cfg(not(feature = "full"))]
-            _ => unreachable!(),
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprArray {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.elems.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprAssign {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.left.hash(state);
-        self.right.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprAsync {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.capture.hash(state);
-        self.block.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprAwait {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.base.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprBinary {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.left.hash(state);
-        self.op.hash(state);
-        self.right.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprBlock {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.label.hash(state);
-        self.block.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprBreak {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.label.hash(state);
-        self.expr.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprCall {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.func.hash(state);
-        self.args.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprCast {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.expr.hash(state);
-        self.ty.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprClosure {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.lifetimes.hash(state);
-        self.constness.hash(state);
-        self.movability.hash(state);
-        self.asyncness.hash(state);
-        self.capture.hash(state);
-        self.inputs.hash(state);
-        self.output.hash(state);
-        self.body.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprConst {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.block.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprContinue {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.label.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprField {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.base.hash(state);
-        self.member.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprForLoop {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.label.hash(state);
-        self.pat.hash(state);
-        self.expr.hash(state);
-        self.body.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprGroup {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.expr.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprIf {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.cond.hash(state);
-        self.then_branch.hash(state);
-        self.else_branch.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprIndex {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.expr.hash(state);
-        self.index.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprInfer {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprLet {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.pat.hash(state);
-        self.expr.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprLit {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.lit.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprLoop {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.label.hash(state);
-        self.body.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprMacro {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.mac.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprMatch {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.expr.hash(state);
-        self.arms.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprMethodCall {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.receiver.hash(state);
-        self.method.hash(state);
-        self.turbofish.hash(state);
-        self.args.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprParen {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.expr.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprPath {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.qself.hash(state);
-        self.path.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprRange {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.start.hash(state);
-        self.limits.hash(state);
-        self.end.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprReference {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.mutability.hash(state);
-        self.expr.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprRepeat {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.expr.hash(state);
-        self.len.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprReturn {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.expr.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprStruct {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.qself.hash(state);
-        self.path.hash(state);
-        self.fields.hash(state);
-        self.dot2_token.hash(state);
-        self.rest.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprTry {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.expr.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprTryBlock {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.block.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprTuple {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.elems.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprUnary {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.op.hash(state);
-        self.expr.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprUnsafe {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.block.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprWhile {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.label.hash(state);
-        self.cond.hash(state);
-        self.body.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ExprYield {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.expr.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Field {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.mutability.hash(state);
-        self.ident.hash(state);
-        self.colon_token.hash(state);
-        self.ty.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for FieldMutability {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            FieldMutability::None => {
-                state.write_u8(0u8);
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for FieldPat {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.member.hash(state);
-        self.colon_token.hash(state);
-        self.pat.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for FieldValue {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.member.hash(state);
-        self.colon_token.hash(state);
-        self.expr.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Fields {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            Fields::Named(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            Fields::Unnamed(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            Fields::Unit => {
-                state.write_u8(2u8);
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for FieldsNamed {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.named.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for FieldsUnnamed {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.unnamed.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for File {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.shebang.hash(state);
-        self.attrs.hash(state);
-        self.items.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for FnArg {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            FnArg::Receiver(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            FnArg::Typed(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ForeignItem {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            ForeignItem::Fn(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            ForeignItem::Static(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            ForeignItem::Type(v0) => {
-                state.write_u8(2u8);
-                v0.hash(state);
-            }
-            ForeignItem::Macro(v0) => {
-                state.write_u8(3u8);
-                v0.hash(state);
-            }
-            ForeignItem::Verbatim(v0) => {
-                state.write_u8(4u8);
-                TokenStreamHelper(v0).hash(state);
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ForeignItemFn {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.sig.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ForeignItemMacro {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.mac.hash(state);
-        self.semi_token.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ForeignItemStatic {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.mutability.hash(state);
-        self.ident.hash(state);
-        self.ty.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ForeignItemType {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.ident.hash(state);
-        self.generics.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for GenericArgument {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            GenericArgument::Lifetime(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            GenericArgument::Type(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            GenericArgument::Const(v0) => {
-                state.write_u8(2u8);
-                v0.hash(state);
-            }
-            GenericArgument::AssocType(v0) => {
-                state.write_u8(3u8);
-                v0.hash(state);
-            }
-            GenericArgument::AssocConst(v0) => {
-                state.write_u8(4u8);
-                v0.hash(state);
-            }
-            GenericArgument::Constraint(v0) => {
-                state.write_u8(5u8);
-                v0.hash(state);
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for GenericParam {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            GenericParam::Lifetime(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            GenericParam::Type(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            GenericParam::Const(v0) => {
-                state.write_u8(2u8);
-                v0.hash(state);
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Generics {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.lt_token.hash(state);
-        self.params.hash(state);
-        self.gt_token.hash(state);
-        self.where_clause.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ImplItem {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            ImplItem::Const(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            ImplItem::Fn(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            ImplItem::Type(v0) => {
-                state.write_u8(2u8);
-                v0.hash(state);
-            }
-            ImplItem::Macro(v0) => {
-                state.write_u8(3u8);
-                v0.hash(state);
-            }
-            ImplItem::Verbatim(v0) => {
-                state.write_u8(4u8);
-                TokenStreamHelper(v0).hash(state);
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ImplItemConst {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.defaultness.hash(state);
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.ty.hash(state);
-        self.expr.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ImplItemFn {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.defaultness.hash(state);
-        self.sig.hash(state);
-        self.block.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ImplItemMacro {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.mac.hash(state);
-        self.semi_token.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ImplItemType {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.defaultness.hash(state);
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.ty.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ImplRestriction {
-    fn hash<H>(&self, _state: &mut H)
-    where
-        H: Hasher,
-    {
-        match *self {}
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Item {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            Item::Const(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            Item::Enum(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            Item::ExternCrate(v0) => {
-                state.write_u8(2u8);
-                v0.hash(state);
-            }
-            Item::Fn(v0) => {
-                state.write_u8(3u8);
-                v0.hash(state);
-            }
-            Item::ForeignMod(v0) => {
-                state.write_u8(4u8);
-                v0.hash(state);
-            }
-            Item::Impl(v0) => {
-                state.write_u8(5u8);
-                v0.hash(state);
-            }
-            Item::Macro(v0) => {
-                state.write_u8(6u8);
-                v0.hash(state);
-            }
-            Item::Mod(v0) => {
-                state.write_u8(7u8);
-                v0.hash(state);
-            }
-            Item::Static(v0) => {
-                state.write_u8(8u8);
-                v0.hash(state);
-            }
-            Item::Struct(v0) => {
-                state.write_u8(9u8);
-                v0.hash(state);
-            }
-            Item::Trait(v0) => {
-                state.write_u8(10u8);
-                v0.hash(state);
-            }
-            Item::TraitAlias(v0) => {
-                state.write_u8(11u8);
-                v0.hash(state);
-            }
-            Item::Type(v0) => {
-                state.write_u8(12u8);
-                v0.hash(state);
-            }
-            Item::Union(v0) => {
-                state.write_u8(13u8);
-                v0.hash(state);
-            }
-            Item::Use(v0) => {
-                state.write_u8(14u8);
-                v0.hash(state);
-            }
-            Item::Verbatim(v0) => {
-                state.write_u8(15u8);
-                TokenStreamHelper(v0).hash(state);
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ItemConst {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.ty.hash(state);
-        self.expr.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ItemEnum {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.variants.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ItemExternCrate {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.ident.hash(state);
-        self.rename.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ItemFn {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.sig.hash(state);
-        self.block.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ItemForeignMod {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.unsafety.hash(state);
-        self.abi.hash(state);
-        self.items.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ItemImpl {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.defaultness.hash(state);
-        self.unsafety.hash(state);
-        self.generics.hash(state);
-        self.trait_.hash(state);
-        self.self_ty.hash(state);
-        self.items.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ItemMacro {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.ident.hash(state);
-        self.mac.hash(state);
-        self.semi_token.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ItemMod {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.unsafety.hash(state);
-        self.ident.hash(state);
-        self.content.hash(state);
-        self.semi.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ItemStatic {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.mutability.hash(state);
-        self.ident.hash(state);
-        self.ty.hash(state);
-        self.expr.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ItemStruct {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.fields.hash(state);
-        self.semi_token.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ItemTrait {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.unsafety.hash(state);
-        self.auto_token.hash(state);
-        self.restriction.hash(state);
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.colon_token.hash(state);
-        self.supertraits.hash(state);
-        self.items.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ItemTraitAlias {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.bounds.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ItemType {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.ty.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ItemUnion {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.fields.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ItemUse {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.vis.hash(state);
-        self.leading_colon.hash(state);
-        self.tree.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Label {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.name.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for LifetimeParam {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.lifetime.hash(state);
-        self.colon_token.hash(state);
-        self.bounds.hash(state);
-    }
-}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Lit {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            Lit::Str(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            Lit::ByteStr(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            Lit::Byte(v0) => {
-                state.write_u8(2u8);
-                v0.hash(state);
-            }
-            Lit::Char(v0) => {
-                state.write_u8(3u8);
-                v0.hash(state);
-            }
-            Lit::Int(v0) => {
-                state.write_u8(4u8);
-                v0.hash(state);
-            }
-            Lit::Float(v0) => {
-                state.write_u8(5u8);
-                v0.hash(state);
-            }
-            Lit::Bool(v0) => {
-                state.write_u8(6u8);
-                v0.hash(state);
-            }
-            Lit::Verbatim(v0) => {
-                state.write_u8(7u8);
-                v0.to_string().hash(state);
-            }
-        }
-    }
-}
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for LitBool {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.value.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Local {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.pat.hash(state);
-        self.init.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for LocalInit {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.expr.hash(state);
-        self.diverge.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Macro {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.path.hash(state);
-        self.delimiter.hash(state);
-        TokenStreamHelper(&self.tokens).hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for MacroDelimiter {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            MacroDelimiter::Paren(_) => {
-                state.write_u8(0u8);
-            }
-            MacroDelimiter::Brace(_) => {
-                state.write_u8(1u8);
-            }
-            MacroDelimiter::Bracket(_) => {
-                state.write_u8(2u8);
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Meta {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            Meta::Path(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            Meta::List(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            Meta::NameValue(v0) => {
-                state.write_u8(2u8);
-                v0.hash(state);
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for MetaList {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.path.hash(state);
-        self.delimiter.hash(state);
-        TokenStreamHelper(&self.tokens).hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for MetaNameValue {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.path.hash(state);
-        self.value.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ParenthesizedGenericArguments {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.inputs.hash(state);
-        self.output.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Pat {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            Pat::Const(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            Pat::Ident(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            Pat::Lit(v0) => {
-                state.write_u8(2u8);
-                v0.hash(state);
-            }
-            Pat::Macro(v0) => {
-                state.write_u8(3u8);
-                v0.hash(state);
-            }
-            Pat::Or(v0) => {
-                state.write_u8(4u8);
-                v0.hash(state);
-            }
-            Pat::Paren(v0) => {
-                state.write_u8(5u8);
-                v0.hash(state);
-            }
-            Pat::Path(v0) => {
-                state.write_u8(6u8);
-                v0.hash(state);
-            }
-            Pat::Range(v0) => {
-                state.write_u8(7u8);
-                v0.hash(state);
-            }
-            Pat::Reference(v0) => {
-                state.write_u8(8u8);
-                v0.hash(state);
-            }
-            Pat::Rest(v0) => {
-                state.write_u8(9u8);
-                v0.hash(state);
-            }
-            Pat::Slice(v0) => {
-                state.write_u8(10u8);
-                v0.hash(state);
-            }
-            Pat::Struct(v0) => {
-                state.write_u8(11u8);
-                v0.hash(state);
-            }
-            Pat::Tuple(v0) => {
-                state.write_u8(12u8);
-                v0.hash(state);
-            }
-            Pat::TupleStruct(v0) => {
-                state.write_u8(13u8);
-                v0.hash(state);
-            }
-            Pat::Type(v0) => {
-                state.write_u8(14u8);
-                v0.hash(state);
-            }
-            Pat::Verbatim(v0) => {
-                state.write_u8(15u8);
-                TokenStreamHelper(v0).hash(state);
-            }
-            Pat::Wild(v0) => {
-                state.write_u8(16u8);
-                v0.hash(state);
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for PatIdent {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.by_ref.hash(state);
-        self.mutability.hash(state);
-        self.ident.hash(state);
-        self.subpat.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for PatOr {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.leading_vert.hash(state);
-        self.cases.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for PatParen {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.pat.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for PatReference {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.mutability.hash(state);
-        self.pat.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for PatRest {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for PatSlice {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.elems.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for PatStruct {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.qself.hash(state);
-        self.path.hash(state);
-        self.fields.hash(state);
-        self.rest.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for PatTuple {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.elems.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for PatTupleStruct {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.qself.hash(state);
-        self.path.hash(state);
-        self.elems.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for PatType {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.pat.hash(state);
-        self.ty.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for PatWild {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Path {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.leading_colon.hash(state);
-        self.segments.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for PathArguments {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            PathArguments::None => {
-                state.write_u8(0u8);
-            }
-            PathArguments::AngleBracketed(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            PathArguments::Parenthesized(v0) => {
-                state.write_u8(2u8);
-                v0.hash(state);
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for PathSegment {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.ident.hash(state);
-        self.arguments.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for PredicateLifetime {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.lifetime.hash(state);
-        self.bounds.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for PredicateType {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.lifetimes.hash(state);
-        self.bounded_ty.hash(state);
-        self.bounds.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for QSelf {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.ty.hash(state);
-        self.position.hash(state);
-        self.as_token.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for RangeLimits {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            RangeLimits::HalfOpen(_) => {
-                state.write_u8(0u8);
-            }
-            RangeLimits::Closed(_) => {
-                state.write_u8(1u8);
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Receiver {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.reference.hash(state);
-        self.mutability.hash(state);
-        self.colon_token.hash(state);
-        self.ty.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for ReturnType {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            ReturnType::Default => {
-                state.write_u8(0u8);
-            }
-            ReturnType::Type(_, v1) => {
-                state.write_u8(1u8);
-                v1.hash(state);
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Signature {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.constness.hash(state);
-        self.asyncness.hash(state);
-        self.unsafety.hash(state);
-        self.abi.hash(state);
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.inputs.hash(state);
-        self.variadic.hash(state);
-        self.output.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for StaticMutability {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            StaticMutability::Mut(_) => {
-                state.write_u8(0u8);
-            }
-            StaticMutability::None => {
-                state.write_u8(1u8);
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Stmt {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            Stmt::Local(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            Stmt::Item(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            Stmt::Expr(v0, v1) => {
-                state.write_u8(2u8);
-                v0.hash(state);
-                v1.hash(state);
-            }
-            Stmt::Macro(v0) => {
-                state.write_u8(3u8);
-                v0.hash(state);
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for StmtMacro {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.mac.hash(state);
-        self.semi_token.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TraitBound {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.paren_token.hash(state);
-        self.modifier.hash(state);
-        self.lifetimes.hash(state);
-        self.path.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TraitBoundModifier {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            TraitBoundModifier::None => {
-                state.write_u8(0u8);
-            }
-            TraitBoundModifier::Maybe(_) => {
-                state.write_u8(1u8);
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TraitItem {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            TraitItem::Const(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            TraitItem::Fn(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            TraitItem::Type(v0) => {
-                state.write_u8(2u8);
-                v0.hash(state);
-            }
-            TraitItem::Macro(v0) => {
-                state.write_u8(3u8);
-                v0.hash(state);
-            }
-            TraitItem::Verbatim(v0) => {
-                state.write_u8(4u8);
-                TokenStreamHelper(v0).hash(state);
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TraitItemConst {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.ty.hash(state);
-        self.default.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TraitItemFn {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.sig.hash(state);
-        self.default.hash(state);
-        self.semi_token.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TraitItemMacro {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.mac.hash(state);
-        self.semi_token.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TraitItemType {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.ident.hash(state);
-        self.generics.hash(state);
-        self.colon_token.hash(state);
-        self.bounds.hash(state);
-        self.default.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Type {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            Type::Array(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            Type::BareFn(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            Type::Group(v0) => {
-                state.write_u8(2u8);
-                v0.hash(state);
-            }
-            Type::ImplTrait(v0) => {
-                state.write_u8(3u8);
-                v0.hash(state);
-            }
-            Type::Infer(v0) => {
-                state.write_u8(4u8);
-                v0.hash(state);
-            }
-            Type::Macro(v0) => {
-                state.write_u8(5u8);
-                v0.hash(state);
-            }
-            Type::Never(v0) => {
-                state.write_u8(6u8);
-                v0.hash(state);
-            }
-            Type::Paren(v0) => {
-                state.write_u8(7u8);
-                v0.hash(state);
-            }
-            Type::Path(v0) => {
-                state.write_u8(8u8);
-                v0.hash(state);
-            }
-            Type::Ptr(v0) => {
-                state.write_u8(9u8);
-                v0.hash(state);
-            }
-            Type::Reference(v0) => {
-                state.write_u8(10u8);
-                v0.hash(state);
-            }
-            Type::Slice(v0) => {
-                state.write_u8(11u8);
-                v0.hash(state);
-            }
-            Type::TraitObject(v0) => {
-                state.write_u8(12u8);
-                v0.hash(state);
-            }
-            Type::Tuple(v0) => {
-                state.write_u8(13u8);
-                v0.hash(state);
-            }
-            Type::Verbatim(v0) => {
-                state.write_u8(14u8);
-                TokenStreamHelper(v0).hash(state);
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypeArray {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.elem.hash(state);
-        self.len.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypeBareFn {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.lifetimes.hash(state);
-        self.unsafety.hash(state);
-        self.abi.hash(state);
-        self.inputs.hash(state);
-        self.variadic.hash(state);
-        self.output.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypeGroup {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.elem.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypeImplTrait {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.bounds.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypeInfer {
-    fn hash<H>(&self, _state: &mut H)
-    where
-        H: Hasher,
-    {}
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypeMacro {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.mac.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypeNever {
-    fn hash<H>(&self, _state: &mut H)
-    where
-        H: Hasher,
-    {}
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypeParam {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.ident.hash(state);
-        self.colon_token.hash(state);
-        self.bounds.hash(state);
-        self.eq_token.hash(state);
-        self.default.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypeParamBound {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            TypeParamBound::Trait(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            TypeParamBound::Lifetime(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            TypeParamBound::Verbatim(v0) => {
-                state.write_u8(2u8);
-                TokenStreamHelper(v0).hash(state);
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypeParen {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.elem.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypePath {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.qself.hash(state);
-        self.path.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypePtr {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.const_token.hash(state);
-        self.mutability.hash(state);
-        self.elem.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypeReference {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.lifetime.hash(state);
-        self.mutability.hash(state);
-        self.elem.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypeSlice {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.elem.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypeTraitObject {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.dyn_token.hash(state);
-        self.bounds.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for TypeTuple {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.elems.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for UnOp {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            UnOp::Deref(_) => {
-                state.write_u8(0u8);
-            }
-            UnOp::Not(_) => {
-                state.write_u8(1u8);
-            }
-            UnOp::Neg(_) => {
-                state.write_u8(2u8);
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for UseGlob {
-    fn hash<H>(&self, _state: &mut H)
-    where
-        H: Hasher,
-    {}
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for UseGroup {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.items.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for UseName {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.ident.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for UsePath {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.ident.hash(state);
-        self.tree.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for UseRename {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.ident.hash(state);
-        self.rename.hash(state);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for UseTree {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            UseTree::Path(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            UseTree::Name(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            UseTree::Rename(v0) => {
-                state.write_u8(2u8);
-                v0.hash(state);
-            }
-            UseTree::Glob(v0) => {
-                state.write_u8(3u8);
-                v0.hash(state);
-            }
-            UseTree::Group(v0) => {
-                state.write_u8(4u8);
-                v0.hash(state);
-            }
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Variadic {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.pat.hash(state);
-        self.comma.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Variant {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.attrs.hash(state);
-        self.ident.hash(state);
-        self.fields.hash(state);
-        self.discriminant.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for VisRestricted {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.in_token.hash(state);
-        self.path.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Visibility {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            Visibility::Public(_) => {
-                state.write_u8(0u8);
-            }
-            Visibility::Restricted(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-            Visibility::Inherited => {
-                state.write_u8(2u8);
-            }
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for WhereClause {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        self.predicates.hash(state);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for WherePredicate {
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        match self {
-            WherePredicate::Lifetime(v0) => {
-                state.write_u8(0u8);
-                v0.hash(state);
-            }
-            WherePredicate::Type(v0) => {
-                state.write_u8(1u8);
-                v0.hash(state);
-            }
-        }
-    }
-}
diff --git a/vendor/syn/src/gen/visit.rs b/vendor/syn/src/gen/visit.rs
deleted file mode 100644
index 572e0ad..0000000
--- a/vendor/syn/src/gen/visit.rs
+++ /dev/null
@@ -1,3844 +0,0 @@
-// This file is @generated by syn-internal-codegen.
-// It is not intended for manual editing.
-
-#![allow(unused_variables)]
-#![allow(clippy::needless_pass_by_ref_mut)]
-#[cfg(any(feature = "full", feature = "derive"))]
-use crate::punctuated::Punctuated;
-use crate::*;
-use proc_macro2::Span;
-#[cfg(feature = "full")]
-macro_rules! full {
-    ($e:expr) => {
-        $e
-    };
-}
-#[cfg(all(feature = "derive", not(feature = "full")))]
-macro_rules! full {
-    ($e:expr) => {
-        unreachable!()
-    };
-}
-macro_rules! skip {
-    ($($tt:tt)*) => {};
-}
-/// Syntax tree traversal to walk a shared borrow of a syntax tree.
-///
-/// See the [module documentation] for details.
-///
-/// [module documentation]: self
-pub trait Visit<'ast> {
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_abi(&mut self, i: &'ast Abi) {
-        visit_abi(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_angle_bracketed_generic_arguments(
-        &mut self,
-        i: &'ast AngleBracketedGenericArguments,
-    ) {
-        visit_angle_bracketed_generic_arguments(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_arm(&mut self, i: &'ast Arm) {
-        visit_arm(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_assoc_const(&mut self, i: &'ast AssocConst) {
-        visit_assoc_const(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_assoc_type(&mut self, i: &'ast AssocType) {
-        visit_assoc_type(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_attr_style(&mut self, i: &'ast AttrStyle) {
-        visit_attr_style(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_attribute(&mut self, i: &'ast Attribute) {
-        visit_attribute(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_bare_fn_arg(&mut self, i: &'ast BareFnArg) {
-        visit_bare_fn_arg(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_bare_variadic(&mut self, i: &'ast BareVariadic) {
-        visit_bare_variadic(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_bin_op(&mut self, i: &'ast BinOp) {
-        visit_bin_op(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_block(&mut self, i: &'ast Block) {
-        visit_block(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_bound_lifetimes(&mut self, i: &'ast BoundLifetimes) {
-        visit_bound_lifetimes(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_const_param(&mut self, i: &'ast ConstParam) {
-        visit_const_param(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_constraint(&mut self, i: &'ast Constraint) {
-        visit_constraint(self, i);
-    }
-    #[cfg(feature = "derive")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    fn visit_data(&mut self, i: &'ast Data) {
-        visit_data(self, i);
-    }
-    #[cfg(feature = "derive")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    fn visit_data_enum(&mut self, i: &'ast DataEnum) {
-        visit_data_enum(self, i);
-    }
-    #[cfg(feature = "derive")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    fn visit_data_struct(&mut self, i: &'ast DataStruct) {
-        visit_data_struct(self, i);
-    }
-    #[cfg(feature = "derive")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    fn visit_data_union(&mut self, i: &'ast DataUnion) {
-        visit_data_union(self, i);
-    }
-    #[cfg(feature = "derive")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    fn visit_derive_input(&mut self, i: &'ast DeriveInput) {
-        visit_derive_input(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr(&mut self, i: &'ast Expr) {
-        visit_expr(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_array(&mut self, i: &'ast ExprArray) {
-        visit_expr_array(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_assign(&mut self, i: &'ast ExprAssign) {
-        visit_expr_assign(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_async(&mut self, i: &'ast ExprAsync) {
-        visit_expr_async(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_await(&mut self, i: &'ast ExprAwait) {
-        visit_expr_await(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_binary(&mut self, i: &'ast ExprBinary) {
-        visit_expr_binary(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_block(&mut self, i: &'ast ExprBlock) {
-        visit_expr_block(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_break(&mut self, i: &'ast ExprBreak) {
-        visit_expr_break(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_call(&mut self, i: &'ast ExprCall) {
-        visit_expr_call(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_cast(&mut self, i: &'ast ExprCast) {
-        visit_expr_cast(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_closure(&mut self, i: &'ast ExprClosure) {
-        visit_expr_closure(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_const(&mut self, i: &'ast ExprConst) {
-        visit_expr_const(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_continue(&mut self, i: &'ast ExprContinue) {
-        visit_expr_continue(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_field(&mut self, i: &'ast ExprField) {
-        visit_expr_field(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_for_loop(&mut self, i: &'ast ExprForLoop) {
-        visit_expr_for_loop(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_group(&mut self, i: &'ast ExprGroup) {
-        visit_expr_group(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_if(&mut self, i: &'ast ExprIf) {
-        visit_expr_if(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_index(&mut self, i: &'ast ExprIndex) {
-        visit_expr_index(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_infer(&mut self, i: &'ast ExprInfer) {
-        visit_expr_infer(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_let(&mut self, i: &'ast ExprLet) {
-        visit_expr_let(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_lit(&mut self, i: &'ast ExprLit) {
-        visit_expr_lit(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_loop(&mut self, i: &'ast ExprLoop) {
-        visit_expr_loop(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_macro(&mut self, i: &'ast ExprMacro) {
-        visit_expr_macro(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_match(&mut self, i: &'ast ExprMatch) {
-        visit_expr_match(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_method_call(&mut self, i: &'ast ExprMethodCall) {
-        visit_expr_method_call(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_paren(&mut self, i: &'ast ExprParen) {
-        visit_expr_paren(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_path(&mut self, i: &'ast ExprPath) {
-        visit_expr_path(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_range(&mut self, i: &'ast ExprRange) {
-        visit_expr_range(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_reference(&mut self, i: &'ast ExprReference) {
-        visit_expr_reference(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_repeat(&mut self, i: &'ast ExprRepeat) {
-        visit_expr_repeat(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_return(&mut self, i: &'ast ExprReturn) {
-        visit_expr_return(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_struct(&mut self, i: &'ast ExprStruct) {
-        visit_expr_struct(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_try(&mut self, i: &'ast ExprTry) {
-        visit_expr_try(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_try_block(&mut self, i: &'ast ExprTryBlock) {
-        visit_expr_try_block(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_tuple(&mut self, i: &'ast ExprTuple) {
-        visit_expr_tuple(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_unary(&mut self, i: &'ast ExprUnary) {
-        visit_expr_unary(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_unsafe(&mut self, i: &'ast ExprUnsafe) {
-        visit_expr_unsafe(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_while(&mut self, i: &'ast ExprWhile) {
-        visit_expr_while(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_yield(&mut self, i: &'ast ExprYield) {
-        visit_expr_yield(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_field(&mut self, i: &'ast Field) {
-        visit_field(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_field_mutability(&mut self, i: &'ast FieldMutability) {
-        visit_field_mutability(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_field_pat(&mut self, i: &'ast FieldPat) {
-        visit_field_pat(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_field_value(&mut self, i: &'ast FieldValue) {
-        visit_field_value(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_fields(&mut self, i: &'ast Fields) {
-        visit_fields(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_fields_named(&mut self, i: &'ast FieldsNamed) {
-        visit_fields_named(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_fields_unnamed(&mut self, i: &'ast FieldsUnnamed) {
-        visit_fields_unnamed(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_file(&mut self, i: &'ast File) {
-        visit_file(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_fn_arg(&mut self, i: &'ast FnArg) {
-        visit_fn_arg(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_foreign_item(&mut self, i: &'ast ForeignItem) {
-        visit_foreign_item(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_foreign_item_fn(&mut self, i: &'ast ForeignItemFn) {
-        visit_foreign_item_fn(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_foreign_item_macro(&mut self, i: &'ast ForeignItemMacro) {
-        visit_foreign_item_macro(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_foreign_item_static(&mut self, i: &'ast ForeignItemStatic) {
-        visit_foreign_item_static(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_foreign_item_type(&mut self, i: &'ast ForeignItemType) {
-        visit_foreign_item_type(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_generic_argument(&mut self, i: &'ast GenericArgument) {
-        visit_generic_argument(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_generic_param(&mut self, i: &'ast GenericParam) {
-        visit_generic_param(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_generics(&mut self, i: &'ast Generics) {
-        visit_generics(self, i);
-    }
-    fn visit_ident(&mut self, i: &'ast Ident) {
-        visit_ident(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_impl_item(&mut self, i: &'ast ImplItem) {
-        visit_impl_item(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_impl_item_const(&mut self, i: &'ast ImplItemConst) {
-        visit_impl_item_const(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_impl_item_fn(&mut self, i: &'ast ImplItemFn) {
-        visit_impl_item_fn(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_impl_item_macro(&mut self, i: &'ast ImplItemMacro) {
-        visit_impl_item_macro(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_impl_item_type(&mut self, i: &'ast ImplItemType) {
-        visit_impl_item_type(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_impl_restriction(&mut self, i: &'ast ImplRestriction) {
-        visit_impl_restriction(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_index(&mut self, i: &'ast Index) {
-        visit_index(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item(&mut self, i: &'ast Item) {
-        visit_item(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_const(&mut self, i: &'ast ItemConst) {
-        visit_item_const(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_enum(&mut self, i: &'ast ItemEnum) {
-        visit_item_enum(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_extern_crate(&mut self, i: &'ast ItemExternCrate) {
-        visit_item_extern_crate(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_fn(&mut self, i: &'ast ItemFn) {
-        visit_item_fn(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_foreign_mod(&mut self, i: &'ast ItemForeignMod) {
-        visit_item_foreign_mod(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_impl(&mut self, i: &'ast ItemImpl) {
-        visit_item_impl(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_macro(&mut self, i: &'ast ItemMacro) {
-        visit_item_macro(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_mod(&mut self, i: &'ast ItemMod) {
-        visit_item_mod(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_static(&mut self, i: &'ast ItemStatic) {
-        visit_item_static(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_struct(&mut self, i: &'ast ItemStruct) {
-        visit_item_struct(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_trait(&mut self, i: &'ast ItemTrait) {
-        visit_item_trait(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_trait_alias(&mut self, i: &'ast ItemTraitAlias) {
-        visit_item_trait_alias(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_type(&mut self, i: &'ast ItemType) {
-        visit_item_type(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_union(&mut self, i: &'ast ItemUnion) {
-        visit_item_union(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_use(&mut self, i: &'ast ItemUse) {
-        visit_item_use(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_label(&mut self, i: &'ast Label) {
-        visit_label(self, i);
-    }
-    fn visit_lifetime(&mut self, i: &'ast Lifetime) {
-        visit_lifetime(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_lifetime_param(&mut self, i: &'ast LifetimeParam) {
-        visit_lifetime_param(self, i);
-    }
-    fn visit_lit(&mut self, i: &'ast Lit) {
-        visit_lit(self, i);
-    }
-    fn visit_lit_bool(&mut self, i: &'ast LitBool) {
-        visit_lit_bool(self, i);
-    }
-    fn visit_lit_byte(&mut self, i: &'ast LitByte) {
-        visit_lit_byte(self, i);
-    }
-    fn visit_lit_byte_str(&mut self, i: &'ast LitByteStr) {
-        visit_lit_byte_str(self, i);
-    }
-    fn visit_lit_char(&mut self, i: &'ast LitChar) {
-        visit_lit_char(self, i);
-    }
-    fn visit_lit_float(&mut self, i: &'ast LitFloat) {
-        visit_lit_float(self, i);
-    }
-    fn visit_lit_int(&mut self, i: &'ast LitInt) {
-        visit_lit_int(self, i);
-    }
-    fn visit_lit_str(&mut self, i: &'ast LitStr) {
-        visit_lit_str(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_local(&mut self, i: &'ast Local) {
-        visit_local(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_local_init(&mut self, i: &'ast LocalInit) {
-        visit_local_init(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_macro(&mut self, i: &'ast Macro) {
-        visit_macro(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_macro_delimiter(&mut self, i: &'ast MacroDelimiter) {
-        visit_macro_delimiter(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_member(&mut self, i: &'ast Member) {
-        visit_member(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_meta(&mut self, i: &'ast Meta) {
-        visit_meta(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_meta_list(&mut self, i: &'ast MetaList) {
-        visit_meta_list(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_meta_name_value(&mut self, i: &'ast MetaNameValue) {
-        visit_meta_name_value(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_parenthesized_generic_arguments(
-        &mut self,
-        i: &'ast ParenthesizedGenericArguments,
-    ) {
-        visit_parenthesized_generic_arguments(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat(&mut self, i: &'ast Pat) {
-        visit_pat(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_ident(&mut self, i: &'ast PatIdent) {
-        visit_pat_ident(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_or(&mut self, i: &'ast PatOr) {
-        visit_pat_or(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_paren(&mut self, i: &'ast PatParen) {
-        visit_pat_paren(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_reference(&mut self, i: &'ast PatReference) {
-        visit_pat_reference(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_rest(&mut self, i: &'ast PatRest) {
-        visit_pat_rest(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_slice(&mut self, i: &'ast PatSlice) {
-        visit_pat_slice(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_struct(&mut self, i: &'ast PatStruct) {
-        visit_pat_struct(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_tuple(&mut self, i: &'ast PatTuple) {
-        visit_pat_tuple(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_tuple_struct(&mut self, i: &'ast PatTupleStruct) {
-        visit_pat_tuple_struct(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_type(&mut self, i: &'ast PatType) {
-        visit_pat_type(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_wild(&mut self, i: &'ast PatWild) {
-        visit_pat_wild(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_path(&mut self, i: &'ast Path) {
-        visit_path(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_path_arguments(&mut self, i: &'ast PathArguments) {
-        visit_path_arguments(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_path_segment(&mut self, i: &'ast PathSegment) {
-        visit_path_segment(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_predicate_lifetime(&mut self, i: &'ast PredicateLifetime) {
-        visit_predicate_lifetime(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_predicate_type(&mut self, i: &'ast PredicateType) {
-        visit_predicate_type(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_qself(&mut self, i: &'ast QSelf) {
-        visit_qself(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_range_limits(&mut self, i: &'ast RangeLimits) {
-        visit_range_limits(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_receiver(&mut self, i: &'ast Receiver) {
-        visit_receiver(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_return_type(&mut self, i: &'ast ReturnType) {
-        visit_return_type(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_signature(&mut self, i: &'ast Signature) {
-        visit_signature(self, i);
-    }
-    fn visit_span(&mut self, i: &Span) {
-        visit_span(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_static_mutability(&mut self, i: &'ast StaticMutability) {
-        visit_static_mutability(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_stmt(&mut self, i: &'ast Stmt) {
-        visit_stmt(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_stmt_macro(&mut self, i: &'ast StmtMacro) {
-        visit_stmt_macro(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_trait_bound(&mut self, i: &'ast TraitBound) {
-        visit_trait_bound(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_trait_bound_modifier(&mut self, i: &'ast TraitBoundModifier) {
-        visit_trait_bound_modifier(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_trait_item(&mut self, i: &'ast TraitItem) {
-        visit_trait_item(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_trait_item_const(&mut self, i: &'ast TraitItemConst) {
-        visit_trait_item_const(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_trait_item_fn(&mut self, i: &'ast TraitItemFn) {
-        visit_trait_item_fn(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_trait_item_macro(&mut self, i: &'ast TraitItemMacro) {
-        visit_trait_item_macro(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_trait_item_type(&mut self, i: &'ast TraitItemType) {
-        visit_trait_item_type(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type(&mut self, i: &'ast Type) {
-        visit_type(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_array(&mut self, i: &'ast TypeArray) {
-        visit_type_array(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_bare_fn(&mut self, i: &'ast TypeBareFn) {
-        visit_type_bare_fn(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_group(&mut self, i: &'ast TypeGroup) {
-        visit_type_group(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_impl_trait(&mut self, i: &'ast TypeImplTrait) {
-        visit_type_impl_trait(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_infer(&mut self, i: &'ast TypeInfer) {
-        visit_type_infer(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_macro(&mut self, i: &'ast TypeMacro) {
-        visit_type_macro(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_never(&mut self, i: &'ast TypeNever) {
-        visit_type_never(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_param(&mut self, i: &'ast TypeParam) {
-        visit_type_param(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_param_bound(&mut self, i: &'ast TypeParamBound) {
-        visit_type_param_bound(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_paren(&mut self, i: &'ast TypeParen) {
-        visit_type_paren(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_path(&mut self, i: &'ast TypePath) {
-        visit_type_path(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_ptr(&mut self, i: &'ast TypePtr) {
-        visit_type_ptr(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_reference(&mut self, i: &'ast TypeReference) {
-        visit_type_reference(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_slice(&mut self, i: &'ast TypeSlice) {
-        visit_type_slice(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_trait_object(&mut self, i: &'ast TypeTraitObject) {
-        visit_type_trait_object(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_tuple(&mut self, i: &'ast TypeTuple) {
-        visit_type_tuple(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_un_op(&mut self, i: &'ast UnOp) {
-        visit_un_op(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_use_glob(&mut self, i: &'ast UseGlob) {
-        visit_use_glob(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_use_group(&mut self, i: &'ast UseGroup) {
-        visit_use_group(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_use_name(&mut self, i: &'ast UseName) {
-        visit_use_name(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_use_path(&mut self, i: &'ast UsePath) {
-        visit_use_path(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_use_rename(&mut self, i: &'ast UseRename) {
-        visit_use_rename(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_use_tree(&mut self, i: &'ast UseTree) {
-        visit_use_tree(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_variadic(&mut self, i: &'ast Variadic) {
-        visit_variadic(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_variant(&mut self, i: &'ast Variant) {
-        visit_variant(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_vis_restricted(&mut self, i: &'ast VisRestricted) {
-        visit_vis_restricted(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_visibility(&mut self, i: &'ast Visibility) {
-        visit_visibility(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_where_clause(&mut self, i: &'ast WhereClause) {
-        visit_where_clause(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_where_predicate(&mut self, i: &'ast WherePredicate) {
-        visit_where_predicate(self, i);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_abi<'ast, V>(v: &mut V, node: &'ast Abi)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.extern_token);
-    if let Some(it) = &node.name {
-        v.visit_lit_str(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_angle_bracketed_generic_arguments<'ast, V>(
-    v: &mut V,
-    node: &'ast AngleBracketedGenericArguments,
-)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.colon2_token);
-    skip!(node.lt_token);
-    for el in Punctuated::pairs(&node.args) {
-        let it = el.value();
-        v.visit_generic_argument(it);
-    }
-    skip!(node.gt_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_arm<'ast, V>(v: &mut V, node: &'ast Arm)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_pat(&node.pat);
-    if let Some(it) = &node.guard {
-        skip!((it).0);
-        v.visit_expr(&*(it).1);
-    }
-    skip!(node.fat_arrow_token);
-    v.visit_expr(&*node.body);
-    skip!(node.comma);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_assoc_const<'ast, V>(v: &mut V, node: &'ast AssocConst)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    v.visit_ident(&node.ident);
-    if let Some(it) = &node.generics {
-        v.visit_angle_bracketed_generic_arguments(it);
-    }
-    skip!(node.eq_token);
-    v.visit_expr(&node.value);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_assoc_type<'ast, V>(v: &mut V, node: &'ast AssocType)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    v.visit_ident(&node.ident);
-    if let Some(it) = &node.generics {
-        v.visit_angle_bracketed_generic_arguments(it);
-    }
-    skip!(node.eq_token);
-    v.visit_type(&node.ty);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_attr_style<'ast, V>(v: &mut V, node: &'ast AttrStyle)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        AttrStyle::Outer => {}
-        AttrStyle::Inner(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_attribute<'ast, V>(v: &mut V, node: &'ast Attribute)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.pound_token);
-    v.visit_attr_style(&node.style);
-    skip!(node.bracket_token);
-    v.visit_meta(&node.meta);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_bare_fn_arg<'ast, V>(v: &mut V, node: &'ast BareFnArg)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    if let Some(it) = &node.name {
-        v.visit_ident(&(it).0);
-        skip!((it).1);
-    }
-    v.visit_type(&node.ty);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_bare_variadic<'ast, V>(v: &mut V, node: &'ast BareVariadic)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    if let Some(it) = &node.name {
-        v.visit_ident(&(it).0);
-        skip!((it).1);
-    }
-    skip!(node.dots);
-    skip!(node.comma);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_bin_op<'ast, V>(v: &mut V, node: &'ast BinOp)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        BinOp::Add(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Sub(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Mul(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Div(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Rem(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::And(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Or(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::BitXor(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::BitAnd(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::BitOr(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Shl(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Shr(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Eq(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Lt(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Le(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Ne(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Ge(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Gt(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::AddAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::SubAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::MulAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::DivAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::RemAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::BitXorAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::BitAndAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::BitOrAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::ShlAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::ShrAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_block<'ast, V>(v: &mut V, node: &'ast Block)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.brace_token);
-    for it in &node.stmts {
-        v.visit_stmt(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_bound_lifetimes<'ast, V>(v: &mut V, node: &'ast BoundLifetimes)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.for_token);
-    skip!(node.lt_token);
-    for el in Punctuated::pairs(&node.lifetimes) {
-        let it = el.value();
-        v.visit_generic_param(it);
-    }
-    skip!(node.gt_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_const_param<'ast, V>(v: &mut V, node: &'ast ConstParam)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.const_token);
-    v.visit_ident(&node.ident);
-    skip!(node.colon_token);
-    v.visit_type(&node.ty);
-    skip!(node.eq_token);
-    if let Some(it) = &node.default {
-        v.visit_expr(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_constraint<'ast, V>(v: &mut V, node: &'ast Constraint)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    v.visit_ident(&node.ident);
-    if let Some(it) = &node.generics {
-        v.visit_angle_bracketed_generic_arguments(it);
-    }
-    skip!(node.colon_token);
-    for el in Punctuated::pairs(&node.bounds) {
-        let it = el.value();
-        v.visit_type_param_bound(it);
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub fn visit_data<'ast, V>(v: &mut V, node: &'ast Data)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        Data::Struct(_binding_0) => {
-            v.visit_data_struct(_binding_0);
-        }
-        Data::Enum(_binding_0) => {
-            v.visit_data_enum(_binding_0);
-        }
-        Data::Union(_binding_0) => {
-            v.visit_data_union(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub fn visit_data_enum<'ast, V>(v: &mut V, node: &'ast DataEnum)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.enum_token);
-    skip!(node.brace_token);
-    for el in Punctuated::pairs(&node.variants) {
-        let it = el.value();
-        v.visit_variant(it);
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub fn visit_data_struct<'ast, V>(v: &mut V, node: &'ast DataStruct)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.struct_token);
-    v.visit_fields(&node.fields);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub fn visit_data_union<'ast, V>(v: &mut V, node: &'ast DataUnion)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.union_token);
-    v.visit_fields_named(&node.fields);
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub fn visit_derive_input<'ast, V>(v: &mut V, node: &'ast DeriveInput)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    v.visit_ident(&node.ident);
-    v.visit_generics(&node.generics);
-    v.visit_data(&node.data);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr<'ast, V>(v: &mut V, node: &'ast Expr)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        Expr::Array(_binding_0) => {
-            full!(v.visit_expr_array(_binding_0));
-        }
-        Expr::Assign(_binding_0) => {
-            full!(v.visit_expr_assign(_binding_0));
-        }
-        Expr::Async(_binding_0) => {
-            full!(v.visit_expr_async(_binding_0));
-        }
-        Expr::Await(_binding_0) => {
-            full!(v.visit_expr_await(_binding_0));
-        }
-        Expr::Binary(_binding_0) => {
-            v.visit_expr_binary(_binding_0);
-        }
-        Expr::Block(_binding_0) => {
-            full!(v.visit_expr_block(_binding_0));
-        }
-        Expr::Break(_binding_0) => {
-            full!(v.visit_expr_break(_binding_0));
-        }
-        Expr::Call(_binding_0) => {
-            v.visit_expr_call(_binding_0);
-        }
-        Expr::Cast(_binding_0) => {
-            v.visit_expr_cast(_binding_0);
-        }
-        Expr::Closure(_binding_0) => {
-            full!(v.visit_expr_closure(_binding_0));
-        }
-        Expr::Const(_binding_0) => {
-            full!(v.visit_expr_const(_binding_0));
-        }
-        Expr::Continue(_binding_0) => {
-            full!(v.visit_expr_continue(_binding_0));
-        }
-        Expr::Field(_binding_0) => {
-            v.visit_expr_field(_binding_0);
-        }
-        Expr::ForLoop(_binding_0) => {
-            full!(v.visit_expr_for_loop(_binding_0));
-        }
-        Expr::Group(_binding_0) => {
-            v.visit_expr_group(_binding_0);
-        }
-        Expr::If(_binding_0) => {
-            full!(v.visit_expr_if(_binding_0));
-        }
-        Expr::Index(_binding_0) => {
-            v.visit_expr_index(_binding_0);
-        }
-        Expr::Infer(_binding_0) => {
-            full!(v.visit_expr_infer(_binding_0));
-        }
-        Expr::Let(_binding_0) => {
-            full!(v.visit_expr_let(_binding_0));
-        }
-        Expr::Lit(_binding_0) => {
-            v.visit_expr_lit(_binding_0);
-        }
-        Expr::Loop(_binding_0) => {
-            full!(v.visit_expr_loop(_binding_0));
-        }
-        Expr::Macro(_binding_0) => {
-            v.visit_expr_macro(_binding_0);
-        }
-        Expr::Match(_binding_0) => {
-            full!(v.visit_expr_match(_binding_0));
-        }
-        Expr::MethodCall(_binding_0) => {
-            v.visit_expr_method_call(_binding_0);
-        }
-        Expr::Paren(_binding_0) => {
-            v.visit_expr_paren(_binding_0);
-        }
-        Expr::Path(_binding_0) => {
-            v.visit_expr_path(_binding_0);
-        }
-        Expr::Range(_binding_0) => {
-            full!(v.visit_expr_range(_binding_0));
-        }
-        Expr::Reference(_binding_0) => {
-            v.visit_expr_reference(_binding_0);
-        }
-        Expr::Repeat(_binding_0) => {
-            full!(v.visit_expr_repeat(_binding_0));
-        }
-        Expr::Return(_binding_0) => {
-            full!(v.visit_expr_return(_binding_0));
-        }
-        Expr::Struct(_binding_0) => {
-            v.visit_expr_struct(_binding_0);
-        }
-        Expr::Try(_binding_0) => {
-            full!(v.visit_expr_try(_binding_0));
-        }
-        Expr::TryBlock(_binding_0) => {
-            full!(v.visit_expr_try_block(_binding_0));
-        }
-        Expr::Tuple(_binding_0) => {
-            full!(v.visit_expr_tuple(_binding_0));
-        }
-        Expr::Unary(_binding_0) => {
-            v.visit_expr_unary(_binding_0);
-        }
-        Expr::Unsafe(_binding_0) => {
-            full!(v.visit_expr_unsafe(_binding_0));
-        }
-        Expr::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-        Expr::While(_binding_0) => {
-            full!(v.visit_expr_while(_binding_0));
-        }
-        Expr::Yield(_binding_0) => {
-            full!(v.visit_expr_yield(_binding_0));
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_array<'ast, V>(v: &mut V, node: &'ast ExprArray)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.bracket_token);
-    for el in Punctuated::pairs(&node.elems) {
-        let it = el.value();
-        v.visit_expr(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_assign<'ast, V>(v: &mut V, node: &'ast ExprAssign)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_expr(&*node.left);
-    skip!(node.eq_token);
-    v.visit_expr(&*node.right);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_async<'ast, V>(v: &mut V, node: &'ast ExprAsync)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.async_token);
-    skip!(node.capture);
-    v.visit_block(&node.block);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_await<'ast, V>(v: &mut V, node: &'ast ExprAwait)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_expr(&*node.base);
-    skip!(node.dot_token);
-    skip!(node.await_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_binary<'ast, V>(v: &mut V, node: &'ast ExprBinary)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_expr(&*node.left);
-    v.visit_bin_op(&node.op);
-    v.visit_expr(&*node.right);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_block<'ast, V>(v: &mut V, node: &'ast ExprBlock)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    if let Some(it) = &node.label {
-        v.visit_label(it);
-    }
-    v.visit_block(&node.block);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_break<'ast, V>(v: &mut V, node: &'ast ExprBreak)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.break_token);
-    if let Some(it) = &node.label {
-        v.visit_lifetime(it);
-    }
-    if let Some(it) = &node.expr {
-        v.visit_expr(&**it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_call<'ast, V>(v: &mut V, node: &'ast ExprCall)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_expr(&*node.func);
-    skip!(node.paren_token);
-    for el in Punctuated::pairs(&node.args) {
-        let it = el.value();
-        v.visit_expr(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_cast<'ast, V>(v: &mut V, node: &'ast ExprCast)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_expr(&*node.expr);
-    skip!(node.as_token);
-    v.visit_type(&*node.ty);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_closure<'ast, V>(v: &mut V, node: &'ast ExprClosure)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    if let Some(it) = &node.lifetimes {
-        v.visit_bound_lifetimes(it);
-    }
-    skip!(node.constness);
-    skip!(node.movability);
-    skip!(node.asyncness);
-    skip!(node.capture);
-    skip!(node.or1_token);
-    for el in Punctuated::pairs(&node.inputs) {
-        let it = el.value();
-        v.visit_pat(it);
-    }
-    skip!(node.or2_token);
-    v.visit_return_type(&node.output);
-    v.visit_expr(&*node.body);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_const<'ast, V>(v: &mut V, node: &'ast ExprConst)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.const_token);
-    v.visit_block(&node.block);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_continue<'ast, V>(v: &mut V, node: &'ast ExprContinue)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.continue_token);
-    if let Some(it) = &node.label {
-        v.visit_lifetime(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_field<'ast, V>(v: &mut V, node: &'ast ExprField)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_expr(&*node.base);
-    skip!(node.dot_token);
-    v.visit_member(&node.member);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_for_loop<'ast, V>(v: &mut V, node: &'ast ExprForLoop)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    if let Some(it) = &node.label {
-        v.visit_label(it);
-    }
-    skip!(node.for_token);
-    v.visit_pat(&*node.pat);
-    skip!(node.in_token);
-    v.visit_expr(&*node.expr);
-    v.visit_block(&node.body);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_group<'ast, V>(v: &mut V, node: &'ast ExprGroup)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.group_token);
-    v.visit_expr(&*node.expr);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_if<'ast, V>(v: &mut V, node: &'ast ExprIf)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.if_token);
-    v.visit_expr(&*node.cond);
-    v.visit_block(&node.then_branch);
-    if let Some(it) = &node.else_branch {
-        skip!((it).0);
-        v.visit_expr(&*(it).1);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_index<'ast, V>(v: &mut V, node: &'ast ExprIndex)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_expr(&*node.expr);
-    skip!(node.bracket_token);
-    v.visit_expr(&*node.index);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_infer<'ast, V>(v: &mut V, node: &'ast ExprInfer)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.underscore_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_let<'ast, V>(v: &mut V, node: &'ast ExprLet)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.let_token);
-    v.visit_pat(&*node.pat);
-    skip!(node.eq_token);
-    v.visit_expr(&*node.expr);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_lit<'ast, V>(v: &mut V, node: &'ast ExprLit)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_lit(&node.lit);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_loop<'ast, V>(v: &mut V, node: &'ast ExprLoop)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    if let Some(it) = &node.label {
-        v.visit_label(it);
-    }
-    skip!(node.loop_token);
-    v.visit_block(&node.body);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_macro<'ast, V>(v: &mut V, node: &'ast ExprMacro)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_macro(&node.mac);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_match<'ast, V>(v: &mut V, node: &'ast ExprMatch)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.match_token);
-    v.visit_expr(&*node.expr);
-    skip!(node.brace_token);
-    for it in &node.arms {
-        v.visit_arm(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_method_call<'ast, V>(v: &mut V, node: &'ast ExprMethodCall)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_expr(&*node.receiver);
-    skip!(node.dot_token);
-    v.visit_ident(&node.method);
-    if let Some(it) = &node.turbofish {
-        v.visit_angle_bracketed_generic_arguments(it);
-    }
-    skip!(node.paren_token);
-    for el in Punctuated::pairs(&node.args) {
-        let it = el.value();
-        v.visit_expr(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_paren<'ast, V>(v: &mut V, node: &'ast ExprParen)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.paren_token);
-    v.visit_expr(&*node.expr);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_path<'ast, V>(v: &mut V, node: &'ast ExprPath)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    if let Some(it) = &node.qself {
-        v.visit_qself(it);
-    }
-    v.visit_path(&node.path);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_range<'ast, V>(v: &mut V, node: &'ast ExprRange)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    if let Some(it) = &node.start {
-        v.visit_expr(&**it);
-    }
-    v.visit_range_limits(&node.limits);
-    if let Some(it) = &node.end {
-        v.visit_expr(&**it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_reference<'ast, V>(v: &mut V, node: &'ast ExprReference)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.and_token);
-    skip!(node.mutability);
-    v.visit_expr(&*node.expr);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_repeat<'ast, V>(v: &mut V, node: &'ast ExprRepeat)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.bracket_token);
-    v.visit_expr(&*node.expr);
-    skip!(node.semi_token);
-    v.visit_expr(&*node.len);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_return<'ast, V>(v: &mut V, node: &'ast ExprReturn)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.return_token);
-    if let Some(it) = &node.expr {
-        v.visit_expr(&**it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_struct<'ast, V>(v: &mut V, node: &'ast ExprStruct)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    if let Some(it) = &node.qself {
-        v.visit_qself(it);
-    }
-    v.visit_path(&node.path);
-    skip!(node.brace_token);
-    for el in Punctuated::pairs(&node.fields) {
-        let it = el.value();
-        v.visit_field_value(it);
-    }
-    skip!(node.dot2_token);
-    if let Some(it) = &node.rest {
-        v.visit_expr(&**it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_try<'ast, V>(v: &mut V, node: &'ast ExprTry)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_expr(&*node.expr);
-    skip!(node.question_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_try_block<'ast, V>(v: &mut V, node: &'ast ExprTryBlock)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.try_token);
-    v.visit_block(&node.block);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_tuple<'ast, V>(v: &mut V, node: &'ast ExprTuple)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.paren_token);
-    for el in Punctuated::pairs(&node.elems) {
-        let it = el.value();
-        v.visit_expr(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_unary<'ast, V>(v: &mut V, node: &'ast ExprUnary)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_un_op(&node.op);
-    v.visit_expr(&*node.expr);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_unsafe<'ast, V>(v: &mut V, node: &'ast ExprUnsafe)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.unsafe_token);
-    v.visit_block(&node.block);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_while<'ast, V>(v: &mut V, node: &'ast ExprWhile)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    if let Some(it) = &node.label {
-        v.visit_label(it);
-    }
-    skip!(node.while_token);
-    v.visit_expr(&*node.cond);
-    v.visit_block(&node.body);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_yield<'ast, V>(v: &mut V, node: &'ast ExprYield)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.yield_token);
-    if let Some(it) = &node.expr {
-        v.visit_expr(&**it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_field<'ast, V>(v: &mut V, node: &'ast Field)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    v.visit_field_mutability(&node.mutability);
-    if let Some(it) = &node.ident {
-        v.visit_ident(it);
-    }
-    skip!(node.colon_token);
-    v.visit_type(&node.ty);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_field_mutability<'ast, V>(v: &mut V, node: &'ast FieldMutability)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        FieldMutability::None => {}
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_field_pat<'ast, V>(v: &mut V, node: &'ast FieldPat)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_member(&node.member);
-    skip!(node.colon_token);
-    v.visit_pat(&*node.pat);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_field_value<'ast, V>(v: &mut V, node: &'ast FieldValue)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_member(&node.member);
-    skip!(node.colon_token);
-    v.visit_expr(&node.expr);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_fields<'ast, V>(v: &mut V, node: &'ast Fields)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        Fields::Named(_binding_0) => {
-            v.visit_fields_named(_binding_0);
-        }
-        Fields::Unnamed(_binding_0) => {
-            v.visit_fields_unnamed(_binding_0);
-        }
-        Fields::Unit => {}
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_fields_named<'ast, V>(v: &mut V, node: &'ast FieldsNamed)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.brace_token);
-    for el in Punctuated::pairs(&node.named) {
-        let it = el.value();
-        v.visit_field(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_fields_unnamed<'ast, V>(v: &mut V, node: &'ast FieldsUnnamed)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.paren_token);
-    for el in Punctuated::pairs(&node.unnamed) {
-        let it = el.value();
-        v.visit_field(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_file<'ast, V>(v: &mut V, node: &'ast File)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.shebang);
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    for it in &node.items {
-        v.visit_item(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_fn_arg<'ast, V>(v: &mut V, node: &'ast FnArg)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        FnArg::Receiver(_binding_0) => {
-            v.visit_receiver(_binding_0);
-        }
-        FnArg::Typed(_binding_0) => {
-            v.visit_pat_type(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_foreign_item<'ast, V>(v: &mut V, node: &'ast ForeignItem)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        ForeignItem::Fn(_binding_0) => {
-            v.visit_foreign_item_fn(_binding_0);
-        }
-        ForeignItem::Static(_binding_0) => {
-            v.visit_foreign_item_static(_binding_0);
-        }
-        ForeignItem::Type(_binding_0) => {
-            v.visit_foreign_item_type(_binding_0);
-        }
-        ForeignItem::Macro(_binding_0) => {
-            v.visit_foreign_item_macro(_binding_0);
-        }
-        ForeignItem::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_foreign_item_fn<'ast, V>(v: &mut V, node: &'ast ForeignItemFn)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    v.visit_signature(&node.sig);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_foreign_item_macro<'ast, V>(v: &mut V, node: &'ast ForeignItemMacro)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_macro(&node.mac);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_foreign_item_static<'ast, V>(v: &mut V, node: &'ast ForeignItemStatic)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.static_token);
-    v.visit_static_mutability(&node.mutability);
-    v.visit_ident(&node.ident);
-    skip!(node.colon_token);
-    v.visit_type(&*node.ty);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_foreign_item_type<'ast, V>(v: &mut V, node: &'ast ForeignItemType)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.type_token);
-    v.visit_ident(&node.ident);
-    v.visit_generics(&node.generics);
-    skip!(node.semi_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_generic_argument<'ast, V>(v: &mut V, node: &'ast GenericArgument)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        GenericArgument::Lifetime(_binding_0) => {
-            v.visit_lifetime(_binding_0);
-        }
-        GenericArgument::Type(_binding_0) => {
-            v.visit_type(_binding_0);
-        }
-        GenericArgument::Const(_binding_0) => {
-            v.visit_expr(_binding_0);
-        }
-        GenericArgument::AssocType(_binding_0) => {
-            v.visit_assoc_type(_binding_0);
-        }
-        GenericArgument::AssocConst(_binding_0) => {
-            v.visit_assoc_const(_binding_0);
-        }
-        GenericArgument::Constraint(_binding_0) => {
-            v.visit_constraint(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_generic_param<'ast, V>(v: &mut V, node: &'ast GenericParam)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        GenericParam::Lifetime(_binding_0) => {
-            v.visit_lifetime_param(_binding_0);
-        }
-        GenericParam::Type(_binding_0) => {
-            v.visit_type_param(_binding_0);
-        }
-        GenericParam::Const(_binding_0) => {
-            v.visit_const_param(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_generics<'ast, V>(v: &mut V, node: &'ast Generics)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.lt_token);
-    for el in Punctuated::pairs(&node.params) {
-        let it = el.value();
-        v.visit_generic_param(it);
-    }
-    skip!(node.gt_token);
-    if let Some(it) = &node.where_clause {
-        v.visit_where_clause(it);
-    }
-}
-pub fn visit_ident<'ast, V>(v: &mut V, node: &'ast Ident)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    v.visit_span(&node.span());
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_impl_item<'ast, V>(v: &mut V, node: &'ast ImplItem)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        ImplItem::Const(_binding_0) => {
-            v.visit_impl_item_const(_binding_0);
-        }
-        ImplItem::Fn(_binding_0) => {
-            v.visit_impl_item_fn(_binding_0);
-        }
-        ImplItem::Type(_binding_0) => {
-            v.visit_impl_item_type(_binding_0);
-        }
-        ImplItem::Macro(_binding_0) => {
-            v.visit_impl_item_macro(_binding_0);
-        }
-        ImplItem::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_impl_item_const<'ast, V>(v: &mut V, node: &'ast ImplItemConst)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.defaultness);
-    skip!(node.const_token);
-    v.visit_ident(&node.ident);
-    v.visit_generics(&node.generics);
-    skip!(node.colon_token);
-    v.visit_type(&node.ty);
-    skip!(node.eq_token);
-    v.visit_expr(&node.expr);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_impl_item_fn<'ast, V>(v: &mut V, node: &'ast ImplItemFn)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.defaultness);
-    v.visit_signature(&node.sig);
-    v.visit_block(&node.block);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_impl_item_macro<'ast, V>(v: &mut V, node: &'ast ImplItemMacro)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_macro(&node.mac);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_impl_item_type<'ast, V>(v: &mut V, node: &'ast ImplItemType)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.defaultness);
-    skip!(node.type_token);
-    v.visit_ident(&node.ident);
-    v.visit_generics(&node.generics);
-    skip!(node.eq_token);
-    v.visit_type(&node.ty);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_impl_restriction<'ast, V>(v: &mut V, node: &'ast ImplRestriction)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match *node {}
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_index<'ast, V>(v: &mut V, node: &'ast Index)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.index);
-    v.visit_span(&node.span);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item<'ast, V>(v: &mut V, node: &'ast Item)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        Item::Const(_binding_0) => {
-            v.visit_item_const(_binding_0);
-        }
-        Item::Enum(_binding_0) => {
-            v.visit_item_enum(_binding_0);
-        }
-        Item::ExternCrate(_binding_0) => {
-            v.visit_item_extern_crate(_binding_0);
-        }
-        Item::Fn(_binding_0) => {
-            v.visit_item_fn(_binding_0);
-        }
-        Item::ForeignMod(_binding_0) => {
-            v.visit_item_foreign_mod(_binding_0);
-        }
-        Item::Impl(_binding_0) => {
-            v.visit_item_impl(_binding_0);
-        }
-        Item::Macro(_binding_0) => {
-            v.visit_item_macro(_binding_0);
-        }
-        Item::Mod(_binding_0) => {
-            v.visit_item_mod(_binding_0);
-        }
-        Item::Static(_binding_0) => {
-            v.visit_item_static(_binding_0);
-        }
-        Item::Struct(_binding_0) => {
-            v.visit_item_struct(_binding_0);
-        }
-        Item::Trait(_binding_0) => {
-            v.visit_item_trait(_binding_0);
-        }
-        Item::TraitAlias(_binding_0) => {
-            v.visit_item_trait_alias(_binding_0);
-        }
-        Item::Type(_binding_0) => {
-            v.visit_item_type(_binding_0);
-        }
-        Item::Union(_binding_0) => {
-            v.visit_item_union(_binding_0);
-        }
-        Item::Use(_binding_0) => {
-            v.visit_item_use(_binding_0);
-        }
-        Item::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_const<'ast, V>(v: &mut V, node: &'ast ItemConst)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.const_token);
-    v.visit_ident(&node.ident);
-    v.visit_generics(&node.generics);
-    skip!(node.colon_token);
-    v.visit_type(&*node.ty);
-    skip!(node.eq_token);
-    v.visit_expr(&*node.expr);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_enum<'ast, V>(v: &mut V, node: &'ast ItemEnum)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.enum_token);
-    v.visit_ident(&node.ident);
-    v.visit_generics(&node.generics);
-    skip!(node.brace_token);
-    for el in Punctuated::pairs(&node.variants) {
-        let it = el.value();
-        v.visit_variant(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_extern_crate<'ast, V>(v: &mut V, node: &'ast ItemExternCrate)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.extern_token);
-    skip!(node.crate_token);
-    v.visit_ident(&node.ident);
-    if let Some(it) = &node.rename {
-        skip!((it).0);
-        v.visit_ident(&(it).1);
-    }
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_fn<'ast, V>(v: &mut V, node: &'ast ItemFn)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    v.visit_signature(&node.sig);
-    v.visit_block(&*node.block);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_foreign_mod<'ast, V>(v: &mut V, node: &'ast ItemForeignMod)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.unsafety);
-    v.visit_abi(&node.abi);
-    skip!(node.brace_token);
-    for it in &node.items {
-        v.visit_foreign_item(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_impl<'ast, V>(v: &mut V, node: &'ast ItemImpl)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.defaultness);
-    skip!(node.unsafety);
-    skip!(node.impl_token);
-    v.visit_generics(&node.generics);
-    if let Some(it) = &node.trait_ {
-        skip!((it).0);
-        v.visit_path(&(it).1);
-        skip!((it).2);
-    }
-    v.visit_type(&*node.self_ty);
-    skip!(node.brace_token);
-    for it in &node.items {
-        v.visit_impl_item(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_macro<'ast, V>(v: &mut V, node: &'ast ItemMacro)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    if let Some(it) = &node.ident {
-        v.visit_ident(it);
-    }
-    v.visit_macro(&node.mac);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_mod<'ast, V>(v: &mut V, node: &'ast ItemMod)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.unsafety);
-    skip!(node.mod_token);
-    v.visit_ident(&node.ident);
-    if let Some(it) = &node.content {
-        skip!((it).0);
-        for it in &(it).1 {
-            v.visit_item(it);
-        }
-    }
-    skip!(node.semi);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_static<'ast, V>(v: &mut V, node: &'ast ItemStatic)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.static_token);
-    v.visit_static_mutability(&node.mutability);
-    v.visit_ident(&node.ident);
-    skip!(node.colon_token);
-    v.visit_type(&*node.ty);
-    skip!(node.eq_token);
-    v.visit_expr(&*node.expr);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_struct<'ast, V>(v: &mut V, node: &'ast ItemStruct)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.struct_token);
-    v.visit_ident(&node.ident);
-    v.visit_generics(&node.generics);
-    v.visit_fields(&node.fields);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_trait<'ast, V>(v: &mut V, node: &'ast ItemTrait)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.unsafety);
-    skip!(node.auto_token);
-    if let Some(it) = &node.restriction {
-        v.visit_impl_restriction(it);
-    }
-    skip!(node.trait_token);
-    v.visit_ident(&node.ident);
-    v.visit_generics(&node.generics);
-    skip!(node.colon_token);
-    for el in Punctuated::pairs(&node.supertraits) {
-        let it = el.value();
-        v.visit_type_param_bound(it);
-    }
-    skip!(node.brace_token);
-    for it in &node.items {
-        v.visit_trait_item(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_trait_alias<'ast, V>(v: &mut V, node: &'ast ItemTraitAlias)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.trait_token);
-    v.visit_ident(&node.ident);
-    v.visit_generics(&node.generics);
-    skip!(node.eq_token);
-    for el in Punctuated::pairs(&node.bounds) {
-        let it = el.value();
-        v.visit_type_param_bound(it);
-    }
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_type<'ast, V>(v: &mut V, node: &'ast ItemType)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.type_token);
-    v.visit_ident(&node.ident);
-    v.visit_generics(&node.generics);
-    skip!(node.eq_token);
-    v.visit_type(&*node.ty);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_union<'ast, V>(v: &mut V, node: &'ast ItemUnion)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.union_token);
-    v.visit_ident(&node.ident);
-    v.visit_generics(&node.generics);
-    v.visit_fields_named(&node.fields);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_use<'ast, V>(v: &mut V, node: &'ast ItemUse)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_visibility(&node.vis);
-    skip!(node.use_token);
-    skip!(node.leading_colon);
-    v.visit_use_tree(&node.tree);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_label<'ast, V>(v: &mut V, node: &'ast Label)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    v.visit_lifetime(&node.name);
-    skip!(node.colon_token);
-}
-pub fn visit_lifetime<'ast, V>(v: &mut V, node: &'ast Lifetime)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    v.visit_span(&node.apostrophe);
-    v.visit_ident(&node.ident);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_lifetime_param<'ast, V>(v: &mut V, node: &'ast LifetimeParam)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_lifetime(&node.lifetime);
-    skip!(node.colon_token);
-    for el in Punctuated::pairs(&node.bounds) {
-        let it = el.value();
-        v.visit_lifetime(it);
-    }
-}
-pub fn visit_lit<'ast, V>(v: &mut V, node: &'ast Lit)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        Lit::Str(_binding_0) => {
-            v.visit_lit_str(_binding_0);
-        }
-        Lit::ByteStr(_binding_0) => {
-            v.visit_lit_byte_str(_binding_0);
-        }
-        Lit::Byte(_binding_0) => {
-            v.visit_lit_byte(_binding_0);
-        }
-        Lit::Char(_binding_0) => {
-            v.visit_lit_char(_binding_0);
-        }
-        Lit::Int(_binding_0) => {
-            v.visit_lit_int(_binding_0);
-        }
-        Lit::Float(_binding_0) => {
-            v.visit_lit_float(_binding_0);
-        }
-        Lit::Bool(_binding_0) => {
-            v.visit_lit_bool(_binding_0);
-        }
-        Lit::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-pub fn visit_lit_bool<'ast, V>(v: &mut V, node: &'ast LitBool)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.value);
-    v.visit_span(&node.span);
-}
-pub fn visit_lit_byte<'ast, V>(v: &mut V, node: &'ast LitByte)
-where
-    V: Visit<'ast> + ?Sized,
-{}
-pub fn visit_lit_byte_str<'ast, V>(v: &mut V, node: &'ast LitByteStr)
-where
-    V: Visit<'ast> + ?Sized,
-{}
-pub fn visit_lit_char<'ast, V>(v: &mut V, node: &'ast LitChar)
-where
-    V: Visit<'ast> + ?Sized,
-{}
-pub fn visit_lit_float<'ast, V>(v: &mut V, node: &'ast LitFloat)
-where
-    V: Visit<'ast> + ?Sized,
-{}
-pub fn visit_lit_int<'ast, V>(v: &mut V, node: &'ast LitInt)
-where
-    V: Visit<'ast> + ?Sized,
-{}
-pub fn visit_lit_str<'ast, V>(v: &mut V, node: &'ast LitStr)
-where
-    V: Visit<'ast> + ?Sized,
-{}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_local<'ast, V>(v: &mut V, node: &'ast Local)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.let_token);
-    v.visit_pat(&node.pat);
-    if let Some(it) = &node.init {
-        v.visit_local_init(it);
-    }
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_local_init<'ast, V>(v: &mut V, node: &'ast LocalInit)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.eq_token);
-    v.visit_expr(&*node.expr);
-    if let Some(it) = &node.diverge {
-        skip!((it).0);
-        v.visit_expr(&*(it).1);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_macro<'ast, V>(v: &mut V, node: &'ast Macro)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    v.visit_path(&node.path);
-    skip!(node.bang_token);
-    v.visit_macro_delimiter(&node.delimiter);
-    skip!(node.tokens);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_macro_delimiter<'ast, V>(v: &mut V, node: &'ast MacroDelimiter)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        MacroDelimiter::Paren(_binding_0) => {
-            skip!(_binding_0);
-        }
-        MacroDelimiter::Brace(_binding_0) => {
-            skip!(_binding_0);
-        }
-        MacroDelimiter::Bracket(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_member<'ast, V>(v: &mut V, node: &'ast Member)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        Member::Named(_binding_0) => {
-            v.visit_ident(_binding_0);
-        }
-        Member::Unnamed(_binding_0) => {
-            v.visit_index(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_meta<'ast, V>(v: &mut V, node: &'ast Meta)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        Meta::Path(_binding_0) => {
-            v.visit_path(_binding_0);
-        }
-        Meta::List(_binding_0) => {
-            v.visit_meta_list(_binding_0);
-        }
-        Meta::NameValue(_binding_0) => {
-            v.visit_meta_name_value(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_meta_list<'ast, V>(v: &mut V, node: &'ast MetaList)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    v.visit_path(&node.path);
-    v.visit_macro_delimiter(&node.delimiter);
-    skip!(node.tokens);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_meta_name_value<'ast, V>(v: &mut V, node: &'ast MetaNameValue)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    v.visit_path(&node.path);
-    skip!(node.eq_token);
-    v.visit_expr(&node.value);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_parenthesized_generic_arguments<'ast, V>(
-    v: &mut V,
-    node: &'ast ParenthesizedGenericArguments,
-)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.paren_token);
-    for el in Punctuated::pairs(&node.inputs) {
-        let it = el.value();
-        v.visit_type(it);
-    }
-    v.visit_return_type(&node.output);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat<'ast, V>(v: &mut V, node: &'ast Pat)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        Pat::Const(_binding_0) => {
-            v.visit_expr_const(_binding_0);
-        }
-        Pat::Ident(_binding_0) => {
-            v.visit_pat_ident(_binding_0);
-        }
-        Pat::Lit(_binding_0) => {
-            v.visit_expr_lit(_binding_0);
-        }
-        Pat::Macro(_binding_0) => {
-            v.visit_expr_macro(_binding_0);
-        }
-        Pat::Or(_binding_0) => {
-            v.visit_pat_or(_binding_0);
-        }
-        Pat::Paren(_binding_0) => {
-            v.visit_pat_paren(_binding_0);
-        }
-        Pat::Path(_binding_0) => {
-            v.visit_expr_path(_binding_0);
-        }
-        Pat::Range(_binding_0) => {
-            v.visit_expr_range(_binding_0);
-        }
-        Pat::Reference(_binding_0) => {
-            v.visit_pat_reference(_binding_0);
-        }
-        Pat::Rest(_binding_0) => {
-            v.visit_pat_rest(_binding_0);
-        }
-        Pat::Slice(_binding_0) => {
-            v.visit_pat_slice(_binding_0);
-        }
-        Pat::Struct(_binding_0) => {
-            v.visit_pat_struct(_binding_0);
-        }
-        Pat::Tuple(_binding_0) => {
-            v.visit_pat_tuple(_binding_0);
-        }
-        Pat::TupleStruct(_binding_0) => {
-            v.visit_pat_tuple_struct(_binding_0);
-        }
-        Pat::Type(_binding_0) => {
-            v.visit_pat_type(_binding_0);
-        }
-        Pat::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-        Pat::Wild(_binding_0) => {
-            v.visit_pat_wild(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_ident<'ast, V>(v: &mut V, node: &'ast PatIdent)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.by_ref);
-    skip!(node.mutability);
-    v.visit_ident(&node.ident);
-    if let Some(it) = &node.subpat {
-        skip!((it).0);
-        v.visit_pat(&*(it).1);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_or<'ast, V>(v: &mut V, node: &'ast PatOr)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.leading_vert);
-    for el in Punctuated::pairs(&node.cases) {
-        let it = el.value();
-        v.visit_pat(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_paren<'ast, V>(v: &mut V, node: &'ast PatParen)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.paren_token);
-    v.visit_pat(&*node.pat);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_reference<'ast, V>(v: &mut V, node: &'ast PatReference)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.and_token);
-    skip!(node.mutability);
-    v.visit_pat(&*node.pat);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_rest<'ast, V>(v: &mut V, node: &'ast PatRest)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.dot2_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_slice<'ast, V>(v: &mut V, node: &'ast PatSlice)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.bracket_token);
-    for el in Punctuated::pairs(&node.elems) {
-        let it = el.value();
-        v.visit_pat(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_struct<'ast, V>(v: &mut V, node: &'ast PatStruct)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    if let Some(it) = &node.qself {
-        v.visit_qself(it);
-    }
-    v.visit_path(&node.path);
-    skip!(node.brace_token);
-    for el in Punctuated::pairs(&node.fields) {
-        let it = el.value();
-        v.visit_field_pat(it);
-    }
-    if let Some(it) = &node.rest {
-        v.visit_pat_rest(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_tuple<'ast, V>(v: &mut V, node: &'ast PatTuple)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.paren_token);
-    for el in Punctuated::pairs(&node.elems) {
-        let it = el.value();
-        v.visit_pat(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_tuple_struct<'ast, V>(v: &mut V, node: &'ast PatTupleStruct)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    if let Some(it) = &node.qself {
-        v.visit_qself(it);
-    }
-    v.visit_path(&node.path);
-    skip!(node.paren_token);
-    for el in Punctuated::pairs(&node.elems) {
-        let it = el.value();
-        v.visit_pat(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_type<'ast, V>(v: &mut V, node: &'ast PatType)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_pat(&*node.pat);
-    skip!(node.colon_token);
-    v.visit_type(&*node.ty);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_wild<'ast, V>(v: &mut V, node: &'ast PatWild)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.underscore_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_path<'ast, V>(v: &mut V, node: &'ast Path)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.leading_colon);
-    for el in Punctuated::pairs(&node.segments) {
-        let it = el.value();
-        v.visit_path_segment(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_path_arguments<'ast, V>(v: &mut V, node: &'ast PathArguments)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        PathArguments::None => {}
-        PathArguments::AngleBracketed(_binding_0) => {
-            v.visit_angle_bracketed_generic_arguments(_binding_0);
-        }
-        PathArguments::Parenthesized(_binding_0) => {
-            v.visit_parenthesized_generic_arguments(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_path_segment<'ast, V>(v: &mut V, node: &'ast PathSegment)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    v.visit_ident(&node.ident);
-    v.visit_path_arguments(&node.arguments);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_predicate_lifetime<'ast, V>(v: &mut V, node: &'ast PredicateLifetime)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    v.visit_lifetime(&node.lifetime);
-    skip!(node.colon_token);
-    for el in Punctuated::pairs(&node.bounds) {
-        let it = el.value();
-        v.visit_lifetime(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_predicate_type<'ast, V>(v: &mut V, node: &'ast PredicateType)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    if let Some(it) = &node.lifetimes {
-        v.visit_bound_lifetimes(it);
-    }
-    v.visit_type(&node.bounded_ty);
-    skip!(node.colon_token);
-    for el in Punctuated::pairs(&node.bounds) {
-        let it = el.value();
-        v.visit_type_param_bound(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_qself<'ast, V>(v: &mut V, node: &'ast QSelf)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.lt_token);
-    v.visit_type(&*node.ty);
-    skip!(node.position);
-    skip!(node.as_token);
-    skip!(node.gt_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_range_limits<'ast, V>(v: &mut V, node: &'ast RangeLimits)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        RangeLimits::HalfOpen(_binding_0) => {
-            skip!(_binding_0);
-        }
-        RangeLimits::Closed(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_receiver<'ast, V>(v: &mut V, node: &'ast Receiver)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    if let Some(it) = &node.reference {
-        skip!((it).0);
-        if let Some(it) = &(it).1 {
-            v.visit_lifetime(it);
-        }
-    }
-    skip!(node.mutability);
-    skip!(node.self_token);
-    skip!(node.colon_token);
-    v.visit_type(&*node.ty);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_return_type<'ast, V>(v: &mut V, node: &'ast ReturnType)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        ReturnType::Default => {}
-        ReturnType::Type(_binding_0, _binding_1) => {
-            skip!(_binding_0);
-            v.visit_type(&**_binding_1);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_signature<'ast, V>(v: &mut V, node: &'ast Signature)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.constness);
-    skip!(node.asyncness);
-    skip!(node.unsafety);
-    if let Some(it) = &node.abi {
-        v.visit_abi(it);
-    }
-    skip!(node.fn_token);
-    v.visit_ident(&node.ident);
-    v.visit_generics(&node.generics);
-    skip!(node.paren_token);
-    for el in Punctuated::pairs(&node.inputs) {
-        let it = el.value();
-        v.visit_fn_arg(it);
-    }
-    if let Some(it) = &node.variadic {
-        v.visit_variadic(it);
-    }
-    v.visit_return_type(&node.output);
-}
-pub fn visit_span<'ast, V>(v: &mut V, node: &Span)
-where
-    V: Visit<'ast> + ?Sized,
-{}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_static_mutability<'ast, V>(v: &mut V, node: &'ast StaticMutability)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        StaticMutability::Mut(_binding_0) => {
-            skip!(_binding_0);
-        }
-        StaticMutability::None => {}
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_stmt<'ast, V>(v: &mut V, node: &'ast Stmt)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        Stmt::Local(_binding_0) => {
-            v.visit_local(_binding_0);
-        }
-        Stmt::Item(_binding_0) => {
-            v.visit_item(_binding_0);
-        }
-        Stmt::Expr(_binding_0, _binding_1) => {
-            v.visit_expr(_binding_0);
-            skip!(_binding_1);
-        }
-        Stmt::Macro(_binding_0) => {
-            v.visit_stmt_macro(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_stmt_macro<'ast, V>(v: &mut V, node: &'ast StmtMacro)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_macro(&node.mac);
-    skip!(node.semi_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_trait_bound<'ast, V>(v: &mut V, node: &'ast TraitBound)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.paren_token);
-    v.visit_trait_bound_modifier(&node.modifier);
-    if let Some(it) = &node.lifetimes {
-        v.visit_bound_lifetimes(it);
-    }
-    v.visit_path(&node.path);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_trait_bound_modifier<'ast, V>(v: &mut V, node: &'ast TraitBoundModifier)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        TraitBoundModifier::None => {}
-        TraitBoundModifier::Maybe(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_trait_item<'ast, V>(v: &mut V, node: &'ast TraitItem)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        TraitItem::Const(_binding_0) => {
-            v.visit_trait_item_const(_binding_0);
-        }
-        TraitItem::Fn(_binding_0) => {
-            v.visit_trait_item_fn(_binding_0);
-        }
-        TraitItem::Type(_binding_0) => {
-            v.visit_trait_item_type(_binding_0);
-        }
-        TraitItem::Macro(_binding_0) => {
-            v.visit_trait_item_macro(_binding_0);
-        }
-        TraitItem::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_trait_item_const<'ast, V>(v: &mut V, node: &'ast TraitItemConst)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.const_token);
-    v.visit_ident(&node.ident);
-    v.visit_generics(&node.generics);
-    skip!(node.colon_token);
-    v.visit_type(&node.ty);
-    if let Some(it) = &node.default {
-        skip!((it).0);
-        v.visit_expr(&(it).1);
-    }
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_trait_item_fn<'ast, V>(v: &mut V, node: &'ast TraitItemFn)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_signature(&node.sig);
-    if let Some(it) = &node.default {
-        v.visit_block(it);
-    }
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_trait_item_macro<'ast, V>(v: &mut V, node: &'ast TraitItemMacro)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_macro(&node.mac);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_trait_item_type<'ast, V>(v: &mut V, node: &'ast TraitItemType)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    skip!(node.type_token);
-    v.visit_ident(&node.ident);
-    v.visit_generics(&node.generics);
-    skip!(node.colon_token);
-    for el in Punctuated::pairs(&node.bounds) {
-        let it = el.value();
-        v.visit_type_param_bound(it);
-    }
-    if let Some(it) = &node.default {
-        skip!((it).0);
-        v.visit_type(&(it).1);
-    }
-    skip!(node.semi_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type<'ast, V>(v: &mut V, node: &'ast Type)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        Type::Array(_binding_0) => {
-            v.visit_type_array(_binding_0);
-        }
-        Type::BareFn(_binding_0) => {
-            v.visit_type_bare_fn(_binding_0);
-        }
-        Type::Group(_binding_0) => {
-            v.visit_type_group(_binding_0);
-        }
-        Type::ImplTrait(_binding_0) => {
-            v.visit_type_impl_trait(_binding_0);
-        }
-        Type::Infer(_binding_0) => {
-            v.visit_type_infer(_binding_0);
-        }
-        Type::Macro(_binding_0) => {
-            v.visit_type_macro(_binding_0);
-        }
-        Type::Never(_binding_0) => {
-            v.visit_type_never(_binding_0);
-        }
-        Type::Paren(_binding_0) => {
-            v.visit_type_paren(_binding_0);
-        }
-        Type::Path(_binding_0) => {
-            v.visit_type_path(_binding_0);
-        }
-        Type::Ptr(_binding_0) => {
-            v.visit_type_ptr(_binding_0);
-        }
-        Type::Reference(_binding_0) => {
-            v.visit_type_reference(_binding_0);
-        }
-        Type::Slice(_binding_0) => {
-            v.visit_type_slice(_binding_0);
-        }
-        Type::TraitObject(_binding_0) => {
-            v.visit_type_trait_object(_binding_0);
-        }
-        Type::Tuple(_binding_0) => {
-            v.visit_type_tuple(_binding_0);
-        }
-        Type::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_array<'ast, V>(v: &mut V, node: &'ast TypeArray)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.bracket_token);
-    v.visit_type(&*node.elem);
-    skip!(node.semi_token);
-    v.visit_expr(&node.len);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_bare_fn<'ast, V>(v: &mut V, node: &'ast TypeBareFn)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    if let Some(it) = &node.lifetimes {
-        v.visit_bound_lifetimes(it);
-    }
-    skip!(node.unsafety);
-    if let Some(it) = &node.abi {
-        v.visit_abi(it);
-    }
-    skip!(node.fn_token);
-    skip!(node.paren_token);
-    for el in Punctuated::pairs(&node.inputs) {
-        let it = el.value();
-        v.visit_bare_fn_arg(it);
-    }
-    if let Some(it) = &node.variadic {
-        v.visit_bare_variadic(it);
-    }
-    v.visit_return_type(&node.output);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_group<'ast, V>(v: &mut V, node: &'ast TypeGroup)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.group_token);
-    v.visit_type(&*node.elem);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_impl_trait<'ast, V>(v: &mut V, node: &'ast TypeImplTrait)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.impl_token);
-    for el in Punctuated::pairs(&node.bounds) {
-        let it = el.value();
-        v.visit_type_param_bound(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_infer<'ast, V>(v: &mut V, node: &'ast TypeInfer)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.underscore_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_macro<'ast, V>(v: &mut V, node: &'ast TypeMacro)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    v.visit_macro(&node.mac);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_never<'ast, V>(v: &mut V, node: &'ast TypeNever)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.bang_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_param<'ast, V>(v: &mut V, node: &'ast TypeParam)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_ident(&node.ident);
-    skip!(node.colon_token);
-    for el in Punctuated::pairs(&node.bounds) {
-        let it = el.value();
-        v.visit_type_param_bound(it);
-    }
-    skip!(node.eq_token);
-    if let Some(it) = &node.default {
-        v.visit_type(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_param_bound<'ast, V>(v: &mut V, node: &'ast TypeParamBound)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        TypeParamBound::Trait(_binding_0) => {
-            v.visit_trait_bound(_binding_0);
-        }
-        TypeParamBound::Lifetime(_binding_0) => {
-            v.visit_lifetime(_binding_0);
-        }
-        TypeParamBound::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_paren<'ast, V>(v: &mut V, node: &'ast TypeParen)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.paren_token);
-    v.visit_type(&*node.elem);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_path<'ast, V>(v: &mut V, node: &'ast TypePath)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    if let Some(it) = &node.qself {
-        v.visit_qself(it);
-    }
-    v.visit_path(&node.path);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_ptr<'ast, V>(v: &mut V, node: &'ast TypePtr)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.star_token);
-    skip!(node.const_token);
-    skip!(node.mutability);
-    v.visit_type(&*node.elem);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_reference<'ast, V>(v: &mut V, node: &'ast TypeReference)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.and_token);
-    if let Some(it) = &node.lifetime {
-        v.visit_lifetime(it);
-    }
-    skip!(node.mutability);
-    v.visit_type(&*node.elem);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_slice<'ast, V>(v: &mut V, node: &'ast TypeSlice)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.bracket_token);
-    v.visit_type(&*node.elem);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_trait_object<'ast, V>(v: &mut V, node: &'ast TypeTraitObject)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.dyn_token);
-    for el in Punctuated::pairs(&node.bounds) {
-        let it = el.value();
-        v.visit_type_param_bound(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_tuple<'ast, V>(v: &mut V, node: &'ast TypeTuple)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.paren_token);
-    for el in Punctuated::pairs(&node.elems) {
-        let it = el.value();
-        v.visit_type(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_un_op<'ast, V>(v: &mut V, node: &'ast UnOp)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        UnOp::Deref(_binding_0) => {
-            skip!(_binding_0);
-        }
-        UnOp::Not(_binding_0) => {
-            skip!(_binding_0);
-        }
-        UnOp::Neg(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_use_glob<'ast, V>(v: &mut V, node: &'ast UseGlob)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.star_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_use_group<'ast, V>(v: &mut V, node: &'ast UseGroup)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.brace_token);
-    for el in Punctuated::pairs(&node.items) {
-        let it = el.value();
-        v.visit_use_tree(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_use_name<'ast, V>(v: &mut V, node: &'ast UseName)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    v.visit_ident(&node.ident);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_use_path<'ast, V>(v: &mut V, node: &'ast UsePath)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    v.visit_ident(&node.ident);
-    skip!(node.colon2_token);
-    v.visit_use_tree(&*node.tree);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_use_rename<'ast, V>(v: &mut V, node: &'ast UseRename)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    v.visit_ident(&node.ident);
-    skip!(node.as_token);
-    v.visit_ident(&node.rename);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_use_tree<'ast, V>(v: &mut V, node: &'ast UseTree)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        UseTree::Path(_binding_0) => {
-            v.visit_use_path(_binding_0);
-        }
-        UseTree::Name(_binding_0) => {
-            v.visit_use_name(_binding_0);
-        }
-        UseTree::Rename(_binding_0) => {
-            v.visit_use_rename(_binding_0);
-        }
-        UseTree::Glob(_binding_0) => {
-            v.visit_use_glob(_binding_0);
-        }
-        UseTree::Group(_binding_0) => {
-            v.visit_use_group(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_variadic<'ast, V>(v: &mut V, node: &'ast Variadic)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    if let Some(it) = &node.pat {
-        v.visit_pat(&*(it).0);
-        skip!((it).1);
-    }
-    skip!(node.dots);
-    skip!(node.comma);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_variant<'ast, V>(v: &mut V, node: &'ast Variant)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    for it in &node.attrs {
-        v.visit_attribute(it);
-    }
-    v.visit_ident(&node.ident);
-    v.visit_fields(&node.fields);
-    if let Some(it) = &node.discriminant {
-        skip!((it).0);
-        v.visit_expr(&(it).1);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_vis_restricted<'ast, V>(v: &mut V, node: &'ast VisRestricted)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.pub_token);
-    skip!(node.paren_token);
-    skip!(node.in_token);
-    v.visit_path(&*node.path);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_visibility<'ast, V>(v: &mut V, node: &'ast Visibility)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        Visibility::Public(_binding_0) => {
-            skip!(_binding_0);
-        }
-        Visibility::Restricted(_binding_0) => {
-            v.visit_vis_restricted(_binding_0);
-        }
-        Visibility::Inherited => {}
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_where_clause<'ast, V>(v: &mut V, node: &'ast WhereClause)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    skip!(node.where_token);
-    for el in Punctuated::pairs(&node.predicates) {
-        let it = el.value();
-        v.visit_where_predicate(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_where_predicate<'ast, V>(v: &mut V, node: &'ast WherePredicate)
-where
-    V: Visit<'ast> + ?Sized,
-{
-    match node {
-        WherePredicate::Lifetime(_binding_0) => {
-            v.visit_predicate_lifetime(_binding_0);
-        }
-        WherePredicate::Type(_binding_0) => {
-            v.visit_predicate_type(_binding_0);
-        }
-    }
-}
diff --git a/vendor/syn/src/gen/visit_mut.rs b/vendor/syn/src/gen/visit_mut.rs
deleted file mode 100644
index 3e81aae..0000000
--- a/vendor/syn/src/gen/visit_mut.rs
+++ /dev/null
@@ -1,3847 +0,0 @@
-// This file is @generated by syn-internal-codegen.
-// It is not intended for manual editing.
-
-#![allow(unused_variables)]
-#![allow(clippy::needless_pass_by_ref_mut)]
-#[cfg(any(feature = "full", feature = "derive"))]
-use crate::punctuated::Punctuated;
-use crate::*;
-use proc_macro2::Span;
-#[cfg(feature = "full")]
-macro_rules! full {
-    ($e:expr) => {
-        $e
-    };
-}
-#[cfg(all(feature = "derive", not(feature = "full")))]
-macro_rules! full {
-    ($e:expr) => {
-        unreachable!()
-    };
-}
-macro_rules! skip {
-    ($($tt:tt)*) => {};
-}
-/// Syntax tree traversal to mutate an exclusive borrow of a syntax tree in
-/// place.
-///
-/// See the [module documentation] for details.
-///
-/// [module documentation]: self
-pub trait VisitMut {
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_abi_mut(&mut self, i: &mut Abi) {
-        visit_abi_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_angle_bracketed_generic_arguments_mut(
-        &mut self,
-        i: &mut AngleBracketedGenericArguments,
-    ) {
-        visit_angle_bracketed_generic_arguments_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_arm_mut(&mut self, i: &mut Arm) {
-        visit_arm_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_assoc_const_mut(&mut self, i: &mut AssocConst) {
-        visit_assoc_const_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_assoc_type_mut(&mut self, i: &mut AssocType) {
-        visit_assoc_type_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_attr_style_mut(&mut self, i: &mut AttrStyle) {
-        visit_attr_style_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_attribute_mut(&mut self, i: &mut Attribute) {
-        visit_attribute_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_bare_fn_arg_mut(&mut self, i: &mut BareFnArg) {
-        visit_bare_fn_arg_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_bare_variadic_mut(&mut self, i: &mut BareVariadic) {
-        visit_bare_variadic_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_bin_op_mut(&mut self, i: &mut BinOp) {
-        visit_bin_op_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_block_mut(&mut self, i: &mut Block) {
-        visit_block_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_bound_lifetimes_mut(&mut self, i: &mut BoundLifetimes) {
-        visit_bound_lifetimes_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_const_param_mut(&mut self, i: &mut ConstParam) {
-        visit_const_param_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_constraint_mut(&mut self, i: &mut Constraint) {
-        visit_constraint_mut(self, i);
-    }
-    #[cfg(feature = "derive")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    fn visit_data_mut(&mut self, i: &mut Data) {
-        visit_data_mut(self, i);
-    }
-    #[cfg(feature = "derive")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    fn visit_data_enum_mut(&mut self, i: &mut DataEnum) {
-        visit_data_enum_mut(self, i);
-    }
-    #[cfg(feature = "derive")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    fn visit_data_struct_mut(&mut self, i: &mut DataStruct) {
-        visit_data_struct_mut(self, i);
-    }
-    #[cfg(feature = "derive")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    fn visit_data_union_mut(&mut self, i: &mut DataUnion) {
-        visit_data_union_mut(self, i);
-    }
-    #[cfg(feature = "derive")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-    fn visit_derive_input_mut(&mut self, i: &mut DeriveInput) {
-        visit_derive_input_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_mut(&mut self, i: &mut Expr) {
-        visit_expr_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_array_mut(&mut self, i: &mut ExprArray) {
-        visit_expr_array_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_assign_mut(&mut self, i: &mut ExprAssign) {
-        visit_expr_assign_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_async_mut(&mut self, i: &mut ExprAsync) {
-        visit_expr_async_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_await_mut(&mut self, i: &mut ExprAwait) {
-        visit_expr_await_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_binary_mut(&mut self, i: &mut ExprBinary) {
-        visit_expr_binary_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_block_mut(&mut self, i: &mut ExprBlock) {
-        visit_expr_block_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_break_mut(&mut self, i: &mut ExprBreak) {
-        visit_expr_break_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_call_mut(&mut self, i: &mut ExprCall) {
-        visit_expr_call_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_cast_mut(&mut self, i: &mut ExprCast) {
-        visit_expr_cast_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_closure_mut(&mut self, i: &mut ExprClosure) {
-        visit_expr_closure_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_const_mut(&mut self, i: &mut ExprConst) {
-        visit_expr_const_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_continue_mut(&mut self, i: &mut ExprContinue) {
-        visit_expr_continue_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_field_mut(&mut self, i: &mut ExprField) {
-        visit_expr_field_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_for_loop_mut(&mut self, i: &mut ExprForLoop) {
-        visit_expr_for_loop_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_group_mut(&mut self, i: &mut ExprGroup) {
-        visit_expr_group_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_if_mut(&mut self, i: &mut ExprIf) {
-        visit_expr_if_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_index_mut(&mut self, i: &mut ExprIndex) {
-        visit_expr_index_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_infer_mut(&mut self, i: &mut ExprInfer) {
-        visit_expr_infer_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_let_mut(&mut self, i: &mut ExprLet) {
-        visit_expr_let_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_lit_mut(&mut self, i: &mut ExprLit) {
-        visit_expr_lit_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_loop_mut(&mut self, i: &mut ExprLoop) {
-        visit_expr_loop_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_macro_mut(&mut self, i: &mut ExprMacro) {
-        visit_expr_macro_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_match_mut(&mut self, i: &mut ExprMatch) {
-        visit_expr_match_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_method_call_mut(&mut self, i: &mut ExprMethodCall) {
-        visit_expr_method_call_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_paren_mut(&mut self, i: &mut ExprParen) {
-        visit_expr_paren_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_path_mut(&mut self, i: &mut ExprPath) {
-        visit_expr_path_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_range_mut(&mut self, i: &mut ExprRange) {
-        visit_expr_range_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_reference_mut(&mut self, i: &mut ExprReference) {
-        visit_expr_reference_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_repeat_mut(&mut self, i: &mut ExprRepeat) {
-        visit_expr_repeat_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_return_mut(&mut self, i: &mut ExprReturn) {
-        visit_expr_return_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_struct_mut(&mut self, i: &mut ExprStruct) {
-        visit_expr_struct_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_try_mut(&mut self, i: &mut ExprTry) {
-        visit_expr_try_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_try_block_mut(&mut self, i: &mut ExprTryBlock) {
-        visit_expr_try_block_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_tuple_mut(&mut self, i: &mut ExprTuple) {
-        visit_expr_tuple_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_expr_unary_mut(&mut self, i: &mut ExprUnary) {
-        visit_expr_unary_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_unsafe_mut(&mut self, i: &mut ExprUnsafe) {
-        visit_expr_unsafe_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_while_mut(&mut self, i: &mut ExprWhile) {
-        visit_expr_while_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_expr_yield_mut(&mut self, i: &mut ExprYield) {
-        visit_expr_yield_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_field_mut(&mut self, i: &mut Field) {
-        visit_field_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_field_mutability_mut(&mut self, i: &mut FieldMutability) {
-        visit_field_mutability_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_field_pat_mut(&mut self, i: &mut FieldPat) {
-        visit_field_pat_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_field_value_mut(&mut self, i: &mut FieldValue) {
-        visit_field_value_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_fields_mut(&mut self, i: &mut Fields) {
-        visit_fields_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_fields_named_mut(&mut self, i: &mut FieldsNamed) {
-        visit_fields_named_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_fields_unnamed_mut(&mut self, i: &mut FieldsUnnamed) {
-        visit_fields_unnamed_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_file_mut(&mut self, i: &mut File) {
-        visit_file_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_fn_arg_mut(&mut self, i: &mut FnArg) {
-        visit_fn_arg_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_foreign_item_mut(&mut self, i: &mut ForeignItem) {
-        visit_foreign_item_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_foreign_item_fn_mut(&mut self, i: &mut ForeignItemFn) {
-        visit_foreign_item_fn_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_foreign_item_macro_mut(&mut self, i: &mut ForeignItemMacro) {
-        visit_foreign_item_macro_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_foreign_item_static_mut(&mut self, i: &mut ForeignItemStatic) {
-        visit_foreign_item_static_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_foreign_item_type_mut(&mut self, i: &mut ForeignItemType) {
-        visit_foreign_item_type_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_generic_argument_mut(&mut self, i: &mut GenericArgument) {
-        visit_generic_argument_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_generic_param_mut(&mut self, i: &mut GenericParam) {
-        visit_generic_param_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_generics_mut(&mut self, i: &mut Generics) {
-        visit_generics_mut(self, i);
-    }
-    fn visit_ident_mut(&mut self, i: &mut Ident) {
-        visit_ident_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_impl_item_mut(&mut self, i: &mut ImplItem) {
-        visit_impl_item_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_impl_item_const_mut(&mut self, i: &mut ImplItemConst) {
-        visit_impl_item_const_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_impl_item_fn_mut(&mut self, i: &mut ImplItemFn) {
-        visit_impl_item_fn_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_impl_item_macro_mut(&mut self, i: &mut ImplItemMacro) {
-        visit_impl_item_macro_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_impl_item_type_mut(&mut self, i: &mut ImplItemType) {
-        visit_impl_item_type_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_impl_restriction_mut(&mut self, i: &mut ImplRestriction) {
-        visit_impl_restriction_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_index_mut(&mut self, i: &mut Index) {
-        visit_index_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_mut(&mut self, i: &mut Item) {
-        visit_item_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_const_mut(&mut self, i: &mut ItemConst) {
-        visit_item_const_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_enum_mut(&mut self, i: &mut ItemEnum) {
-        visit_item_enum_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_extern_crate_mut(&mut self, i: &mut ItemExternCrate) {
-        visit_item_extern_crate_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_fn_mut(&mut self, i: &mut ItemFn) {
-        visit_item_fn_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_foreign_mod_mut(&mut self, i: &mut ItemForeignMod) {
-        visit_item_foreign_mod_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_impl_mut(&mut self, i: &mut ItemImpl) {
-        visit_item_impl_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_macro_mut(&mut self, i: &mut ItemMacro) {
-        visit_item_macro_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_mod_mut(&mut self, i: &mut ItemMod) {
-        visit_item_mod_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_static_mut(&mut self, i: &mut ItemStatic) {
-        visit_item_static_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_struct_mut(&mut self, i: &mut ItemStruct) {
-        visit_item_struct_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_trait_mut(&mut self, i: &mut ItemTrait) {
-        visit_item_trait_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_trait_alias_mut(&mut self, i: &mut ItemTraitAlias) {
-        visit_item_trait_alias_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_type_mut(&mut self, i: &mut ItemType) {
-        visit_item_type_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_union_mut(&mut self, i: &mut ItemUnion) {
-        visit_item_union_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_item_use_mut(&mut self, i: &mut ItemUse) {
-        visit_item_use_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_label_mut(&mut self, i: &mut Label) {
-        visit_label_mut(self, i);
-    }
-    fn visit_lifetime_mut(&mut self, i: &mut Lifetime) {
-        visit_lifetime_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_lifetime_param_mut(&mut self, i: &mut LifetimeParam) {
-        visit_lifetime_param_mut(self, i);
-    }
-    fn visit_lit_mut(&mut self, i: &mut Lit) {
-        visit_lit_mut(self, i);
-    }
-    fn visit_lit_bool_mut(&mut self, i: &mut LitBool) {
-        visit_lit_bool_mut(self, i);
-    }
-    fn visit_lit_byte_mut(&mut self, i: &mut LitByte) {
-        visit_lit_byte_mut(self, i);
-    }
-    fn visit_lit_byte_str_mut(&mut self, i: &mut LitByteStr) {
-        visit_lit_byte_str_mut(self, i);
-    }
-    fn visit_lit_char_mut(&mut self, i: &mut LitChar) {
-        visit_lit_char_mut(self, i);
-    }
-    fn visit_lit_float_mut(&mut self, i: &mut LitFloat) {
-        visit_lit_float_mut(self, i);
-    }
-    fn visit_lit_int_mut(&mut self, i: &mut LitInt) {
-        visit_lit_int_mut(self, i);
-    }
-    fn visit_lit_str_mut(&mut self, i: &mut LitStr) {
-        visit_lit_str_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_local_mut(&mut self, i: &mut Local) {
-        visit_local_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_local_init_mut(&mut self, i: &mut LocalInit) {
-        visit_local_init_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_macro_mut(&mut self, i: &mut Macro) {
-        visit_macro_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_macro_delimiter_mut(&mut self, i: &mut MacroDelimiter) {
-        visit_macro_delimiter_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_member_mut(&mut self, i: &mut Member) {
-        visit_member_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_meta_mut(&mut self, i: &mut Meta) {
-        visit_meta_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_meta_list_mut(&mut self, i: &mut MetaList) {
-        visit_meta_list_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_meta_name_value_mut(&mut self, i: &mut MetaNameValue) {
-        visit_meta_name_value_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_parenthesized_generic_arguments_mut(
-        &mut self,
-        i: &mut ParenthesizedGenericArguments,
-    ) {
-        visit_parenthesized_generic_arguments_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_mut(&mut self, i: &mut Pat) {
-        visit_pat_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_ident_mut(&mut self, i: &mut PatIdent) {
-        visit_pat_ident_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_or_mut(&mut self, i: &mut PatOr) {
-        visit_pat_or_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_paren_mut(&mut self, i: &mut PatParen) {
-        visit_pat_paren_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_reference_mut(&mut self, i: &mut PatReference) {
-        visit_pat_reference_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_rest_mut(&mut self, i: &mut PatRest) {
-        visit_pat_rest_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_slice_mut(&mut self, i: &mut PatSlice) {
-        visit_pat_slice_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_struct_mut(&mut self, i: &mut PatStruct) {
-        visit_pat_struct_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_tuple_mut(&mut self, i: &mut PatTuple) {
-        visit_pat_tuple_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_tuple_struct_mut(&mut self, i: &mut PatTupleStruct) {
-        visit_pat_tuple_struct_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_type_mut(&mut self, i: &mut PatType) {
-        visit_pat_type_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_pat_wild_mut(&mut self, i: &mut PatWild) {
-        visit_pat_wild_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_path_mut(&mut self, i: &mut Path) {
-        visit_path_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_path_arguments_mut(&mut self, i: &mut PathArguments) {
-        visit_path_arguments_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_path_segment_mut(&mut self, i: &mut PathSegment) {
-        visit_path_segment_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_predicate_lifetime_mut(&mut self, i: &mut PredicateLifetime) {
-        visit_predicate_lifetime_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_predicate_type_mut(&mut self, i: &mut PredicateType) {
-        visit_predicate_type_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_qself_mut(&mut self, i: &mut QSelf) {
-        visit_qself_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_range_limits_mut(&mut self, i: &mut RangeLimits) {
-        visit_range_limits_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_receiver_mut(&mut self, i: &mut Receiver) {
-        visit_receiver_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_return_type_mut(&mut self, i: &mut ReturnType) {
-        visit_return_type_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_signature_mut(&mut self, i: &mut Signature) {
-        visit_signature_mut(self, i);
-    }
-    fn visit_span_mut(&mut self, i: &mut Span) {
-        visit_span_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_static_mutability_mut(&mut self, i: &mut StaticMutability) {
-        visit_static_mutability_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_stmt_mut(&mut self, i: &mut Stmt) {
-        visit_stmt_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_stmt_macro_mut(&mut self, i: &mut StmtMacro) {
-        visit_stmt_macro_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_trait_bound_mut(&mut self, i: &mut TraitBound) {
-        visit_trait_bound_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_trait_bound_modifier_mut(&mut self, i: &mut TraitBoundModifier) {
-        visit_trait_bound_modifier_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_trait_item_mut(&mut self, i: &mut TraitItem) {
-        visit_trait_item_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_trait_item_const_mut(&mut self, i: &mut TraitItemConst) {
-        visit_trait_item_const_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_trait_item_fn_mut(&mut self, i: &mut TraitItemFn) {
-        visit_trait_item_fn_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_trait_item_macro_mut(&mut self, i: &mut TraitItemMacro) {
-        visit_trait_item_macro_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_trait_item_type_mut(&mut self, i: &mut TraitItemType) {
-        visit_trait_item_type_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_mut(&mut self, i: &mut Type) {
-        visit_type_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_array_mut(&mut self, i: &mut TypeArray) {
-        visit_type_array_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_bare_fn_mut(&mut self, i: &mut TypeBareFn) {
-        visit_type_bare_fn_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_group_mut(&mut self, i: &mut TypeGroup) {
-        visit_type_group_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_impl_trait_mut(&mut self, i: &mut TypeImplTrait) {
-        visit_type_impl_trait_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_infer_mut(&mut self, i: &mut TypeInfer) {
-        visit_type_infer_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_macro_mut(&mut self, i: &mut TypeMacro) {
-        visit_type_macro_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_never_mut(&mut self, i: &mut TypeNever) {
-        visit_type_never_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_param_mut(&mut self, i: &mut TypeParam) {
-        visit_type_param_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_param_bound_mut(&mut self, i: &mut TypeParamBound) {
-        visit_type_param_bound_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_paren_mut(&mut self, i: &mut TypeParen) {
-        visit_type_paren_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_path_mut(&mut self, i: &mut TypePath) {
-        visit_type_path_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_ptr_mut(&mut self, i: &mut TypePtr) {
-        visit_type_ptr_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_reference_mut(&mut self, i: &mut TypeReference) {
-        visit_type_reference_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_slice_mut(&mut self, i: &mut TypeSlice) {
-        visit_type_slice_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_trait_object_mut(&mut self, i: &mut TypeTraitObject) {
-        visit_type_trait_object_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_type_tuple_mut(&mut self, i: &mut TypeTuple) {
-        visit_type_tuple_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_un_op_mut(&mut self, i: &mut UnOp) {
-        visit_un_op_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_use_glob_mut(&mut self, i: &mut UseGlob) {
-        visit_use_glob_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_use_group_mut(&mut self, i: &mut UseGroup) {
-        visit_use_group_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_use_name_mut(&mut self, i: &mut UseName) {
-        visit_use_name_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_use_path_mut(&mut self, i: &mut UsePath) {
-        visit_use_path_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_use_rename_mut(&mut self, i: &mut UseRename) {
-        visit_use_rename_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_use_tree_mut(&mut self, i: &mut UseTree) {
-        visit_use_tree_mut(self, i);
-    }
-    #[cfg(feature = "full")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    fn visit_variadic_mut(&mut self, i: &mut Variadic) {
-        visit_variadic_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_variant_mut(&mut self, i: &mut Variant) {
-        visit_variant_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_vis_restricted_mut(&mut self, i: &mut VisRestricted) {
-        visit_vis_restricted_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_visibility_mut(&mut self, i: &mut Visibility) {
-        visit_visibility_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_where_clause_mut(&mut self, i: &mut WhereClause) {
-        visit_where_clause_mut(self, i);
-    }
-    #[cfg(any(feature = "derive", feature = "full"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-    fn visit_where_predicate_mut(&mut self, i: &mut WherePredicate) {
-        visit_where_predicate_mut(self, i);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_abi_mut<V>(v: &mut V, node: &mut Abi)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.extern_token);
-    if let Some(it) = &mut node.name {
-        v.visit_lit_str_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_angle_bracketed_generic_arguments_mut<V>(
-    v: &mut V,
-    node: &mut AngleBracketedGenericArguments,
-)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.colon2_token);
-    skip!(node.lt_token);
-    for mut el in Punctuated::pairs_mut(&mut node.args) {
-        let it = el.value_mut();
-        v.visit_generic_argument_mut(it);
-    }
-    skip!(node.gt_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_arm_mut<V>(v: &mut V, node: &mut Arm)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_pat_mut(&mut node.pat);
-    if let Some(it) = &mut node.guard {
-        skip!((it).0);
-        v.visit_expr_mut(&mut *(it).1);
-    }
-    skip!(node.fat_arrow_token);
-    v.visit_expr_mut(&mut *node.body);
-    skip!(node.comma);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_assoc_const_mut<V>(v: &mut V, node: &mut AssocConst)
-where
-    V: VisitMut + ?Sized,
-{
-    v.visit_ident_mut(&mut node.ident);
-    if let Some(it) = &mut node.generics {
-        v.visit_angle_bracketed_generic_arguments_mut(it);
-    }
-    skip!(node.eq_token);
-    v.visit_expr_mut(&mut node.value);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_assoc_type_mut<V>(v: &mut V, node: &mut AssocType)
-where
-    V: VisitMut + ?Sized,
-{
-    v.visit_ident_mut(&mut node.ident);
-    if let Some(it) = &mut node.generics {
-        v.visit_angle_bracketed_generic_arguments_mut(it);
-    }
-    skip!(node.eq_token);
-    v.visit_type_mut(&mut node.ty);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_attr_style_mut<V>(v: &mut V, node: &mut AttrStyle)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        AttrStyle::Outer => {}
-        AttrStyle::Inner(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_attribute_mut<V>(v: &mut V, node: &mut Attribute)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.pound_token);
-    v.visit_attr_style_mut(&mut node.style);
-    skip!(node.bracket_token);
-    v.visit_meta_mut(&mut node.meta);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_bare_fn_arg_mut<V>(v: &mut V, node: &mut BareFnArg)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    if let Some(it) = &mut node.name {
-        v.visit_ident_mut(&mut (it).0);
-        skip!((it).1);
-    }
-    v.visit_type_mut(&mut node.ty);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_bare_variadic_mut<V>(v: &mut V, node: &mut BareVariadic)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    if let Some(it) = &mut node.name {
-        v.visit_ident_mut(&mut (it).0);
-        skip!((it).1);
-    }
-    skip!(node.dots);
-    skip!(node.comma);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_bin_op_mut<V>(v: &mut V, node: &mut BinOp)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        BinOp::Add(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Sub(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Mul(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Div(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Rem(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::And(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Or(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::BitXor(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::BitAnd(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::BitOr(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Shl(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Shr(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Eq(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Lt(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Le(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Ne(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Ge(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::Gt(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::AddAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::SubAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::MulAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::DivAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::RemAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::BitXorAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::BitAndAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::BitOrAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::ShlAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-        BinOp::ShrAssign(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_block_mut<V>(v: &mut V, node: &mut Block)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.brace_token);
-    for it in &mut node.stmts {
-        v.visit_stmt_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_bound_lifetimes_mut<V>(v: &mut V, node: &mut BoundLifetimes)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.for_token);
-    skip!(node.lt_token);
-    for mut el in Punctuated::pairs_mut(&mut node.lifetimes) {
-        let it = el.value_mut();
-        v.visit_generic_param_mut(it);
-    }
-    skip!(node.gt_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_const_param_mut<V>(v: &mut V, node: &mut ConstParam)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.const_token);
-    v.visit_ident_mut(&mut node.ident);
-    skip!(node.colon_token);
-    v.visit_type_mut(&mut node.ty);
-    skip!(node.eq_token);
-    if let Some(it) = &mut node.default {
-        v.visit_expr_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_constraint_mut<V>(v: &mut V, node: &mut Constraint)
-where
-    V: VisitMut + ?Sized,
-{
-    v.visit_ident_mut(&mut node.ident);
-    if let Some(it) = &mut node.generics {
-        v.visit_angle_bracketed_generic_arguments_mut(it);
-    }
-    skip!(node.colon_token);
-    for mut el in Punctuated::pairs_mut(&mut node.bounds) {
-        let it = el.value_mut();
-        v.visit_type_param_bound_mut(it);
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub fn visit_data_mut<V>(v: &mut V, node: &mut Data)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        Data::Struct(_binding_0) => {
-            v.visit_data_struct_mut(_binding_0);
-        }
-        Data::Enum(_binding_0) => {
-            v.visit_data_enum_mut(_binding_0);
-        }
-        Data::Union(_binding_0) => {
-            v.visit_data_union_mut(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub fn visit_data_enum_mut<V>(v: &mut V, node: &mut DataEnum)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.enum_token);
-    skip!(node.brace_token);
-    for mut el in Punctuated::pairs_mut(&mut node.variants) {
-        let it = el.value_mut();
-        v.visit_variant_mut(it);
-    }
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub fn visit_data_struct_mut<V>(v: &mut V, node: &mut DataStruct)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.struct_token);
-    v.visit_fields_mut(&mut node.fields);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub fn visit_data_union_mut<V>(v: &mut V, node: &mut DataUnion)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.union_token);
-    v.visit_fields_named_mut(&mut node.fields);
-}
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub fn visit_derive_input_mut<V>(v: &mut V, node: &mut DeriveInput)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_generics_mut(&mut node.generics);
-    v.visit_data_mut(&mut node.data);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_mut<V>(v: &mut V, node: &mut Expr)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        Expr::Array(_binding_0) => {
-            full!(v.visit_expr_array_mut(_binding_0));
-        }
-        Expr::Assign(_binding_0) => {
-            full!(v.visit_expr_assign_mut(_binding_0));
-        }
-        Expr::Async(_binding_0) => {
-            full!(v.visit_expr_async_mut(_binding_0));
-        }
-        Expr::Await(_binding_0) => {
-            full!(v.visit_expr_await_mut(_binding_0));
-        }
-        Expr::Binary(_binding_0) => {
-            v.visit_expr_binary_mut(_binding_0);
-        }
-        Expr::Block(_binding_0) => {
-            full!(v.visit_expr_block_mut(_binding_0));
-        }
-        Expr::Break(_binding_0) => {
-            full!(v.visit_expr_break_mut(_binding_0));
-        }
-        Expr::Call(_binding_0) => {
-            v.visit_expr_call_mut(_binding_0);
-        }
-        Expr::Cast(_binding_0) => {
-            v.visit_expr_cast_mut(_binding_0);
-        }
-        Expr::Closure(_binding_0) => {
-            full!(v.visit_expr_closure_mut(_binding_0));
-        }
-        Expr::Const(_binding_0) => {
-            full!(v.visit_expr_const_mut(_binding_0));
-        }
-        Expr::Continue(_binding_0) => {
-            full!(v.visit_expr_continue_mut(_binding_0));
-        }
-        Expr::Field(_binding_0) => {
-            v.visit_expr_field_mut(_binding_0);
-        }
-        Expr::ForLoop(_binding_0) => {
-            full!(v.visit_expr_for_loop_mut(_binding_0));
-        }
-        Expr::Group(_binding_0) => {
-            v.visit_expr_group_mut(_binding_0);
-        }
-        Expr::If(_binding_0) => {
-            full!(v.visit_expr_if_mut(_binding_0));
-        }
-        Expr::Index(_binding_0) => {
-            v.visit_expr_index_mut(_binding_0);
-        }
-        Expr::Infer(_binding_0) => {
-            full!(v.visit_expr_infer_mut(_binding_0));
-        }
-        Expr::Let(_binding_0) => {
-            full!(v.visit_expr_let_mut(_binding_0));
-        }
-        Expr::Lit(_binding_0) => {
-            v.visit_expr_lit_mut(_binding_0);
-        }
-        Expr::Loop(_binding_0) => {
-            full!(v.visit_expr_loop_mut(_binding_0));
-        }
-        Expr::Macro(_binding_0) => {
-            v.visit_expr_macro_mut(_binding_0);
-        }
-        Expr::Match(_binding_0) => {
-            full!(v.visit_expr_match_mut(_binding_0));
-        }
-        Expr::MethodCall(_binding_0) => {
-            v.visit_expr_method_call_mut(_binding_0);
-        }
-        Expr::Paren(_binding_0) => {
-            v.visit_expr_paren_mut(_binding_0);
-        }
-        Expr::Path(_binding_0) => {
-            v.visit_expr_path_mut(_binding_0);
-        }
-        Expr::Range(_binding_0) => {
-            full!(v.visit_expr_range_mut(_binding_0));
-        }
-        Expr::Reference(_binding_0) => {
-            v.visit_expr_reference_mut(_binding_0);
-        }
-        Expr::Repeat(_binding_0) => {
-            full!(v.visit_expr_repeat_mut(_binding_0));
-        }
-        Expr::Return(_binding_0) => {
-            full!(v.visit_expr_return_mut(_binding_0));
-        }
-        Expr::Struct(_binding_0) => {
-            v.visit_expr_struct_mut(_binding_0);
-        }
-        Expr::Try(_binding_0) => {
-            full!(v.visit_expr_try_mut(_binding_0));
-        }
-        Expr::TryBlock(_binding_0) => {
-            full!(v.visit_expr_try_block_mut(_binding_0));
-        }
-        Expr::Tuple(_binding_0) => {
-            full!(v.visit_expr_tuple_mut(_binding_0));
-        }
-        Expr::Unary(_binding_0) => {
-            v.visit_expr_unary_mut(_binding_0);
-        }
-        Expr::Unsafe(_binding_0) => {
-            full!(v.visit_expr_unsafe_mut(_binding_0));
-        }
-        Expr::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-        Expr::While(_binding_0) => {
-            full!(v.visit_expr_while_mut(_binding_0));
-        }
-        Expr::Yield(_binding_0) => {
-            full!(v.visit_expr_yield_mut(_binding_0));
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_array_mut<V>(v: &mut V, node: &mut ExprArray)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.bracket_token);
-    for mut el in Punctuated::pairs_mut(&mut node.elems) {
-        let it = el.value_mut();
-        v.visit_expr_mut(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_assign_mut<V>(v: &mut V, node: &mut ExprAssign)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_expr_mut(&mut *node.left);
-    skip!(node.eq_token);
-    v.visit_expr_mut(&mut *node.right);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_async_mut<V>(v: &mut V, node: &mut ExprAsync)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.async_token);
-    skip!(node.capture);
-    v.visit_block_mut(&mut node.block);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_await_mut<V>(v: &mut V, node: &mut ExprAwait)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_expr_mut(&mut *node.base);
-    skip!(node.dot_token);
-    skip!(node.await_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_binary_mut<V>(v: &mut V, node: &mut ExprBinary)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_expr_mut(&mut *node.left);
-    v.visit_bin_op_mut(&mut node.op);
-    v.visit_expr_mut(&mut *node.right);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_block_mut<V>(v: &mut V, node: &mut ExprBlock)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    if let Some(it) = &mut node.label {
-        v.visit_label_mut(it);
-    }
-    v.visit_block_mut(&mut node.block);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_break_mut<V>(v: &mut V, node: &mut ExprBreak)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.break_token);
-    if let Some(it) = &mut node.label {
-        v.visit_lifetime_mut(it);
-    }
-    if let Some(it) = &mut node.expr {
-        v.visit_expr_mut(&mut **it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_call_mut<V>(v: &mut V, node: &mut ExprCall)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_expr_mut(&mut *node.func);
-    skip!(node.paren_token);
-    for mut el in Punctuated::pairs_mut(&mut node.args) {
-        let it = el.value_mut();
-        v.visit_expr_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_cast_mut<V>(v: &mut V, node: &mut ExprCast)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_expr_mut(&mut *node.expr);
-    skip!(node.as_token);
-    v.visit_type_mut(&mut *node.ty);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_closure_mut<V>(v: &mut V, node: &mut ExprClosure)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    if let Some(it) = &mut node.lifetimes {
-        v.visit_bound_lifetimes_mut(it);
-    }
-    skip!(node.constness);
-    skip!(node.movability);
-    skip!(node.asyncness);
-    skip!(node.capture);
-    skip!(node.or1_token);
-    for mut el in Punctuated::pairs_mut(&mut node.inputs) {
-        let it = el.value_mut();
-        v.visit_pat_mut(it);
-    }
-    skip!(node.or2_token);
-    v.visit_return_type_mut(&mut node.output);
-    v.visit_expr_mut(&mut *node.body);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_const_mut<V>(v: &mut V, node: &mut ExprConst)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.const_token);
-    v.visit_block_mut(&mut node.block);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_continue_mut<V>(v: &mut V, node: &mut ExprContinue)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.continue_token);
-    if let Some(it) = &mut node.label {
-        v.visit_lifetime_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_field_mut<V>(v: &mut V, node: &mut ExprField)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_expr_mut(&mut *node.base);
-    skip!(node.dot_token);
-    v.visit_member_mut(&mut node.member);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_for_loop_mut<V>(v: &mut V, node: &mut ExprForLoop)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    if let Some(it) = &mut node.label {
-        v.visit_label_mut(it);
-    }
-    skip!(node.for_token);
-    v.visit_pat_mut(&mut *node.pat);
-    skip!(node.in_token);
-    v.visit_expr_mut(&mut *node.expr);
-    v.visit_block_mut(&mut node.body);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_group_mut<V>(v: &mut V, node: &mut ExprGroup)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.group_token);
-    v.visit_expr_mut(&mut *node.expr);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_if_mut<V>(v: &mut V, node: &mut ExprIf)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.if_token);
-    v.visit_expr_mut(&mut *node.cond);
-    v.visit_block_mut(&mut node.then_branch);
-    if let Some(it) = &mut node.else_branch {
-        skip!((it).0);
-        v.visit_expr_mut(&mut *(it).1);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_index_mut<V>(v: &mut V, node: &mut ExprIndex)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_expr_mut(&mut *node.expr);
-    skip!(node.bracket_token);
-    v.visit_expr_mut(&mut *node.index);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_infer_mut<V>(v: &mut V, node: &mut ExprInfer)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.underscore_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_let_mut<V>(v: &mut V, node: &mut ExprLet)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.let_token);
-    v.visit_pat_mut(&mut *node.pat);
-    skip!(node.eq_token);
-    v.visit_expr_mut(&mut *node.expr);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_lit_mut<V>(v: &mut V, node: &mut ExprLit)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_lit_mut(&mut node.lit);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_loop_mut<V>(v: &mut V, node: &mut ExprLoop)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    if let Some(it) = &mut node.label {
-        v.visit_label_mut(it);
-    }
-    skip!(node.loop_token);
-    v.visit_block_mut(&mut node.body);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_macro_mut<V>(v: &mut V, node: &mut ExprMacro)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_macro_mut(&mut node.mac);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_match_mut<V>(v: &mut V, node: &mut ExprMatch)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.match_token);
-    v.visit_expr_mut(&mut *node.expr);
-    skip!(node.brace_token);
-    for it in &mut node.arms {
-        v.visit_arm_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_method_call_mut<V>(v: &mut V, node: &mut ExprMethodCall)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_expr_mut(&mut *node.receiver);
-    skip!(node.dot_token);
-    v.visit_ident_mut(&mut node.method);
-    if let Some(it) = &mut node.turbofish {
-        v.visit_angle_bracketed_generic_arguments_mut(it);
-    }
-    skip!(node.paren_token);
-    for mut el in Punctuated::pairs_mut(&mut node.args) {
-        let it = el.value_mut();
-        v.visit_expr_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_paren_mut<V>(v: &mut V, node: &mut ExprParen)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.paren_token);
-    v.visit_expr_mut(&mut *node.expr);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_path_mut<V>(v: &mut V, node: &mut ExprPath)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    if let Some(it) = &mut node.qself {
-        v.visit_qself_mut(it);
-    }
-    v.visit_path_mut(&mut node.path);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_range_mut<V>(v: &mut V, node: &mut ExprRange)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    if let Some(it) = &mut node.start {
-        v.visit_expr_mut(&mut **it);
-    }
-    v.visit_range_limits_mut(&mut node.limits);
-    if let Some(it) = &mut node.end {
-        v.visit_expr_mut(&mut **it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_reference_mut<V>(v: &mut V, node: &mut ExprReference)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.and_token);
-    skip!(node.mutability);
-    v.visit_expr_mut(&mut *node.expr);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_repeat_mut<V>(v: &mut V, node: &mut ExprRepeat)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.bracket_token);
-    v.visit_expr_mut(&mut *node.expr);
-    skip!(node.semi_token);
-    v.visit_expr_mut(&mut *node.len);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_return_mut<V>(v: &mut V, node: &mut ExprReturn)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.return_token);
-    if let Some(it) = &mut node.expr {
-        v.visit_expr_mut(&mut **it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_struct_mut<V>(v: &mut V, node: &mut ExprStruct)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    if let Some(it) = &mut node.qself {
-        v.visit_qself_mut(it);
-    }
-    v.visit_path_mut(&mut node.path);
-    skip!(node.brace_token);
-    for mut el in Punctuated::pairs_mut(&mut node.fields) {
-        let it = el.value_mut();
-        v.visit_field_value_mut(it);
-    }
-    skip!(node.dot2_token);
-    if let Some(it) = &mut node.rest {
-        v.visit_expr_mut(&mut **it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_try_mut<V>(v: &mut V, node: &mut ExprTry)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_expr_mut(&mut *node.expr);
-    skip!(node.question_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_try_block_mut<V>(v: &mut V, node: &mut ExprTryBlock)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.try_token);
-    v.visit_block_mut(&mut node.block);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_tuple_mut<V>(v: &mut V, node: &mut ExprTuple)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.paren_token);
-    for mut el in Punctuated::pairs_mut(&mut node.elems) {
-        let it = el.value_mut();
-        v.visit_expr_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_expr_unary_mut<V>(v: &mut V, node: &mut ExprUnary)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_un_op_mut(&mut node.op);
-    v.visit_expr_mut(&mut *node.expr);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_unsafe_mut<V>(v: &mut V, node: &mut ExprUnsafe)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.unsafe_token);
-    v.visit_block_mut(&mut node.block);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_while_mut<V>(v: &mut V, node: &mut ExprWhile)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    if let Some(it) = &mut node.label {
-        v.visit_label_mut(it);
-    }
-    skip!(node.while_token);
-    v.visit_expr_mut(&mut *node.cond);
-    v.visit_block_mut(&mut node.body);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_expr_yield_mut<V>(v: &mut V, node: &mut ExprYield)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.yield_token);
-    if let Some(it) = &mut node.expr {
-        v.visit_expr_mut(&mut **it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_field_mut<V>(v: &mut V, node: &mut Field)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    v.visit_field_mutability_mut(&mut node.mutability);
-    if let Some(it) = &mut node.ident {
-        v.visit_ident_mut(it);
-    }
-    skip!(node.colon_token);
-    v.visit_type_mut(&mut node.ty);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_field_mutability_mut<V>(v: &mut V, node: &mut FieldMutability)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        FieldMutability::None => {}
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_field_pat_mut<V>(v: &mut V, node: &mut FieldPat)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_member_mut(&mut node.member);
-    skip!(node.colon_token);
-    v.visit_pat_mut(&mut *node.pat);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_field_value_mut<V>(v: &mut V, node: &mut FieldValue)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_member_mut(&mut node.member);
-    skip!(node.colon_token);
-    v.visit_expr_mut(&mut node.expr);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_fields_mut<V>(v: &mut V, node: &mut Fields)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        Fields::Named(_binding_0) => {
-            v.visit_fields_named_mut(_binding_0);
-        }
-        Fields::Unnamed(_binding_0) => {
-            v.visit_fields_unnamed_mut(_binding_0);
-        }
-        Fields::Unit => {}
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_fields_named_mut<V>(v: &mut V, node: &mut FieldsNamed)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.brace_token);
-    for mut el in Punctuated::pairs_mut(&mut node.named) {
-        let it = el.value_mut();
-        v.visit_field_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_fields_unnamed_mut<V>(v: &mut V, node: &mut FieldsUnnamed)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.paren_token);
-    for mut el in Punctuated::pairs_mut(&mut node.unnamed) {
-        let it = el.value_mut();
-        v.visit_field_mut(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_file_mut<V>(v: &mut V, node: &mut File)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.shebang);
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    for it in &mut node.items {
-        v.visit_item_mut(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_fn_arg_mut<V>(v: &mut V, node: &mut FnArg)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        FnArg::Receiver(_binding_0) => {
-            v.visit_receiver_mut(_binding_0);
-        }
-        FnArg::Typed(_binding_0) => {
-            v.visit_pat_type_mut(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_foreign_item_mut<V>(v: &mut V, node: &mut ForeignItem)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        ForeignItem::Fn(_binding_0) => {
-            v.visit_foreign_item_fn_mut(_binding_0);
-        }
-        ForeignItem::Static(_binding_0) => {
-            v.visit_foreign_item_static_mut(_binding_0);
-        }
-        ForeignItem::Type(_binding_0) => {
-            v.visit_foreign_item_type_mut(_binding_0);
-        }
-        ForeignItem::Macro(_binding_0) => {
-            v.visit_foreign_item_macro_mut(_binding_0);
-        }
-        ForeignItem::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_foreign_item_fn_mut<V>(v: &mut V, node: &mut ForeignItemFn)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    v.visit_signature_mut(&mut node.sig);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_foreign_item_macro_mut<V>(v: &mut V, node: &mut ForeignItemMacro)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_macro_mut(&mut node.mac);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_foreign_item_static_mut<V>(v: &mut V, node: &mut ForeignItemStatic)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.static_token);
-    v.visit_static_mutability_mut(&mut node.mutability);
-    v.visit_ident_mut(&mut node.ident);
-    skip!(node.colon_token);
-    v.visit_type_mut(&mut *node.ty);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_foreign_item_type_mut<V>(v: &mut V, node: &mut ForeignItemType)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.type_token);
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_generics_mut(&mut node.generics);
-    skip!(node.semi_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_generic_argument_mut<V>(v: &mut V, node: &mut GenericArgument)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        GenericArgument::Lifetime(_binding_0) => {
-            v.visit_lifetime_mut(_binding_0);
-        }
-        GenericArgument::Type(_binding_0) => {
-            v.visit_type_mut(_binding_0);
-        }
-        GenericArgument::Const(_binding_0) => {
-            v.visit_expr_mut(_binding_0);
-        }
-        GenericArgument::AssocType(_binding_0) => {
-            v.visit_assoc_type_mut(_binding_0);
-        }
-        GenericArgument::AssocConst(_binding_0) => {
-            v.visit_assoc_const_mut(_binding_0);
-        }
-        GenericArgument::Constraint(_binding_0) => {
-            v.visit_constraint_mut(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_generic_param_mut<V>(v: &mut V, node: &mut GenericParam)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        GenericParam::Lifetime(_binding_0) => {
-            v.visit_lifetime_param_mut(_binding_0);
-        }
-        GenericParam::Type(_binding_0) => {
-            v.visit_type_param_mut(_binding_0);
-        }
-        GenericParam::Const(_binding_0) => {
-            v.visit_const_param_mut(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_generics_mut<V>(v: &mut V, node: &mut Generics)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.lt_token);
-    for mut el in Punctuated::pairs_mut(&mut node.params) {
-        let it = el.value_mut();
-        v.visit_generic_param_mut(it);
-    }
-    skip!(node.gt_token);
-    if let Some(it) = &mut node.where_clause {
-        v.visit_where_clause_mut(it);
-    }
-}
-pub fn visit_ident_mut<V>(v: &mut V, node: &mut Ident)
-where
-    V: VisitMut + ?Sized,
-{
-    let mut span = node.span();
-    v.visit_span_mut(&mut span);
-    node.set_span(span);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_impl_item_mut<V>(v: &mut V, node: &mut ImplItem)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        ImplItem::Const(_binding_0) => {
-            v.visit_impl_item_const_mut(_binding_0);
-        }
-        ImplItem::Fn(_binding_0) => {
-            v.visit_impl_item_fn_mut(_binding_0);
-        }
-        ImplItem::Type(_binding_0) => {
-            v.visit_impl_item_type_mut(_binding_0);
-        }
-        ImplItem::Macro(_binding_0) => {
-            v.visit_impl_item_macro_mut(_binding_0);
-        }
-        ImplItem::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_impl_item_const_mut<V>(v: &mut V, node: &mut ImplItemConst)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.defaultness);
-    skip!(node.const_token);
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_generics_mut(&mut node.generics);
-    skip!(node.colon_token);
-    v.visit_type_mut(&mut node.ty);
-    skip!(node.eq_token);
-    v.visit_expr_mut(&mut node.expr);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_impl_item_fn_mut<V>(v: &mut V, node: &mut ImplItemFn)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.defaultness);
-    v.visit_signature_mut(&mut node.sig);
-    v.visit_block_mut(&mut node.block);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_impl_item_macro_mut<V>(v: &mut V, node: &mut ImplItemMacro)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_macro_mut(&mut node.mac);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_impl_item_type_mut<V>(v: &mut V, node: &mut ImplItemType)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.defaultness);
-    skip!(node.type_token);
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_generics_mut(&mut node.generics);
-    skip!(node.eq_token);
-    v.visit_type_mut(&mut node.ty);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_impl_restriction_mut<V>(v: &mut V, node: &mut ImplRestriction)
-where
-    V: VisitMut + ?Sized,
-{
-    match *node {}
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_index_mut<V>(v: &mut V, node: &mut Index)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.index);
-    v.visit_span_mut(&mut node.span);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_mut<V>(v: &mut V, node: &mut Item)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        Item::Const(_binding_0) => {
-            v.visit_item_const_mut(_binding_0);
-        }
-        Item::Enum(_binding_0) => {
-            v.visit_item_enum_mut(_binding_0);
-        }
-        Item::ExternCrate(_binding_0) => {
-            v.visit_item_extern_crate_mut(_binding_0);
-        }
-        Item::Fn(_binding_0) => {
-            v.visit_item_fn_mut(_binding_0);
-        }
-        Item::ForeignMod(_binding_0) => {
-            v.visit_item_foreign_mod_mut(_binding_0);
-        }
-        Item::Impl(_binding_0) => {
-            v.visit_item_impl_mut(_binding_0);
-        }
-        Item::Macro(_binding_0) => {
-            v.visit_item_macro_mut(_binding_0);
-        }
-        Item::Mod(_binding_0) => {
-            v.visit_item_mod_mut(_binding_0);
-        }
-        Item::Static(_binding_0) => {
-            v.visit_item_static_mut(_binding_0);
-        }
-        Item::Struct(_binding_0) => {
-            v.visit_item_struct_mut(_binding_0);
-        }
-        Item::Trait(_binding_0) => {
-            v.visit_item_trait_mut(_binding_0);
-        }
-        Item::TraitAlias(_binding_0) => {
-            v.visit_item_trait_alias_mut(_binding_0);
-        }
-        Item::Type(_binding_0) => {
-            v.visit_item_type_mut(_binding_0);
-        }
-        Item::Union(_binding_0) => {
-            v.visit_item_union_mut(_binding_0);
-        }
-        Item::Use(_binding_0) => {
-            v.visit_item_use_mut(_binding_0);
-        }
-        Item::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_const_mut<V>(v: &mut V, node: &mut ItemConst)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.const_token);
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_generics_mut(&mut node.generics);
-    skip!(node.colon_token);
-    v.visit_type_mut(&mut *node.ty);
-    skip!(node.eq_token);
-    v.visit_expr_mut(&mut *node.expr);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_enum_mut<V>(v: &mut V, node: &mut ItemEnum)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.enum_token);
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_generics_mut(&mut node.generics);
-    skip!(node.brace_token);
-    for mut el in Punctuated::pairs_mut(&mut node.variants) {
-        let it = el.value_mut();
-        v.visit_variant_mut(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_extern_crate_mut<V>(v: &mut V, node: &mut ItemExternCrate)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.extern_token);
-    skip!(node.crate_token);
-    v.visit_ident_mut(&mut node.ident);
-    if let Some(it) = &mut node.rename {
-        skip!((it).0);
-        v.visit_ident_mut(&mut (it).1);
-    }
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_fn_mut<V>(v: &mut V, node: &mut ItemFn)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    v.visit_signature_mut(&mut node.sig);
-    v.visit_block_mut(&mut *node.block);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_foreign_mod_mut<V>(v: &mut V, node: &mut ItemForeignMod)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.unsafety);
-    v.visit_abi_mut(&mut node.abi);
-    skip!(node.brace_token);
-    for it in &mut node.items {
-        v.visit_foreign_item_mut(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_impl_mut<V>(v: &mut V, node: &mut ItemImpl)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.defaultness);
-    skip!(node.unsafety);
-    skip!(node.impl_token);
-    v.visit_generics_mut(&mut node.generics);
-    if let Some(it) = &mut node.trait_ {
-        skip!((it).0);
-        v.visit_path_mut(&mut (it).1);
-        skip!((it).2);
-    }
-    v.visit_type_mut(&mut *node.self_ty);
-    skip!(node.brace_token);
-    for it in &mut node.items {
-        v.visit_impl_item_mut(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_macro_mut<V>(v: &mut V, node: &mut ItemMacro)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    if let Some(it) = &mut node.ident {
-        v.visit_ident_mut(it);
-    }
-    v.visit_macro_mut(&mut node.mac);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_mod_mut<V>(v: &mut V, node: &mut ItemMod)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.unsafety);
-    skip!(node.mod_token);
-    v.visit_ident_mut(&mut node.ident);
-    if let Some(it) = &mut node.content {
-        skip!((it).0);
-        for it in &mut (it).1 {
-            v.visit_item_mut(it);
-        }
-    }
-    skip!(node.semi);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_static_mut<V>(v: &mut V, node: &mut ItemStatic)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.static_token);
-    v.visit_static_mutability_mut(&mut node.mutability);
-    v.visit_ident_mut(&mut node.ident);
-    skip!(node.colon_token);
-    v.visit_type_mut(&mut *node.ty);
-    skip!(node.eq_token);
-    v.visit_expr_mut(&mut *node.expr);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_struct_mut<V>(v: &mut V, node: &mut ItemStruct)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.struct_token);
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_generics_mut(&mut node.generics);
-    v.visit_fields_mut(&mut node.fields);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_trait_mut<V>(v: &mut V, node: &mut ItemTrait)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.unsafety);
-    skip!(node.auto_token);
-    if let Some(it) = &mut node.restriction {
-        v.visit_impl_restriction_mut(it);
-    }
-    skip!(node.trait_token);
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_generics_mut(&mut node.generics);
-    skip!(node.colon_token);
-    for mut el in Punctuated::pairs_mut(&mut node.supertraits) {
-        let it = el.value_mut();
-        v.visit_type_param_bound_mut(it);
-    }
-    skip!(node.brace_token);
-    for it in &mut node.items {
-        v.visit_trait_item_mut(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_trait_alias_mut<V>(v: &mut V, node: &mut ItemTraitAlias)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.trait_token);
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_generics_mut(&mut node.generics);
-    skip!(node.eq_token);
-    for mut el in Punctuated::pairs_mut(&mut node.bounds) {
-        let it = el.value_mut();
-        v.visit_type_param_bound_mut(it);
-    }
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_type_mut<V>(v: &mut V, node: &mut ItemType)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.type_token);
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_generics_mut(&mut node.generics);
-    skip!(node.eq_token);
-    v.visit_type_mut(&mut *node.ty);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_union_mut<V>(v: &mut V, node: &mut ItemUnion)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.union_token);
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_generics_mut(&mut node.generics);
-    v.visit_fields_named_mut(&mut node.fields);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_item_use_mut<V>(v: &mut V, node: &mut ItemUse)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_visibility_mut(&mut node.vis);
-    skip!(node.use_token);
-    skip!(node.leading_colon);
-    v.visit_use_tree_mut(&mut node.tree);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_label_mut<V>(v: &mut V, node: &mut Label)
-where
-    V: VisitMut + ?Sized,
-{
-    v.visit_lifetime_mut(&mut node.name);
-    skip!(node.colon_token);
-}
-pub fn visit_lifetime_mut<V>(v: &mut V, node: &mut Lifetime)
-where
-    V: VisitMut + ?Sized,
-{
-    v.visit_span_mut(&mut node.apostrophe);
-    v.visit_ident_mut(&mut node.ident);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_lifetime_param_mut<V>(v: &mut V, node: &mut LifetimeParam)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_lifetime_mut(&mut node.lifetime);
-    skip!(node.colon_token);
-    for mut el in Punctuated::pairs_mut(&mut node.bounds) {
-        let it = el.value_mut();
-        v.visit_lifetime_mut(it);
-    }
-}
-pub fn visit_lit_mut<V>(v: &mut V, node: &mut Lit)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        Lit::Str(_binding_0) => {
-            v.visit_lit_str_mut(_binding_0);
-        }
-        Lit::ByteStr(_binding_0) => {
-            v.visit_lit_byte_str_mut(_binding_0);
-        }
-        Lit::Byte(_binding_0) => {
-            v.visit_lit_byte_mut(_binding_0);
-        }
-        Lit::Char(_binding_0) => {
-            v.visit_lit_char_mut(_binding_0);
-        }
-        Lit::Int(_binding_0) => {
-            v.visit_lit_int_mut(_binding_0);
-        }
-        Lit::Float(_binding_0) => {
-            v.visit_lit_float_mut(_binding_0);
-        }
-        Lit::Bool(_binding_0) => {
-            v.visit_lit_bool_mut(_binding_0);
-        }
-        Lit::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-pub fn visit_lit_bool_mut<V>(v: &mut V, node: &mut LitBool)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.value);
-    v.visit_span_mut(&mut node.span);
-}
-pub fn visit_lit_byte_mut<V>(v: &mut V, node: &mut LitByte)
-where
-    V: VisitMut + ?Sized,
-{}
-pub fn visit_lit_byte_str_mut<V>(v: &mut V, node: &mut LitByteStr)
-where
-    V: VisitMut + ?Sized,
-{}
-pub fn visit_lit_char_mut<V>(v: &mut V, node: &mut LitChar)
-where
-    V: VisitMut + ?Sized,
-{}
-pub fn visit_lit_float_mut<V>(v: &mut V, node: &mut LitFloat)
-where
-    V: VisitMut + ?Sized,
-{}
-pub fn visit_lit_int_mut<V>(v: &mut V, node: &mut LitInt)
-where
-    V: VisitMut + ?Sized,
-{}
-pub fn visit_lit_str_mut<V>(v: &mut V, node: &mut LitStr)
-where
-    V: VisitMut + ?Sized,
-{}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_local_mut<V>(v: &mut V, node: &mut Local)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.let_token);
-    v.visit_pat_mut(&mut node.pat);
-    if let Some(it) = &mut node.init {
-        v.visit_local_init_mut(it);
-    }
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_local_init_mut<V>(v: &mut V, node: &mut LocalInit)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.eq_token);
-    v.visit_expr_mut(&mut *node.expr);
-    if let Some(it) = &mut node.diverge {
-        skip!((it).0);
-        v.visit_expr_mut(&mut *(it).1);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_macro_mut<V>(v: &mut V, node: &mut Macro)
-where
-    V: VisitMut + ?Sized,
-{
-    v.visit_path_mut(&mut node.path);
-    skip!(node.bang_token);
-    v.visit_macro_delimiter_mut(&mut node.delimiter);
-    skip!(node.tokens);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_macro_delimiter_mut<V>(v: &mut V, node: &mut MacroDelimiter)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        MacroDelimiter::Paren(_binding_0) => {
-            skip!(_binding_0);
-        }
-        MacroDelimiter::Brace(_binding_0) => {
-            skip!(_binding_0);
-        }
-        MacroDelimiter::Bracket(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_member_mut<V>(v: &mut V, node: &mut Member)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        Member::Named(_binding_0) => {
-            v.visit_ident_mut(_binding_0);
-        }
-        Member::Unnamed(_binding_0) => {
-            v.visit_index_mut(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_meta_mut<V>(v: &mut V, node: &mut Meta)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        Meta::Path(_binding_0) => {
-            v.visit_path_mut(_binding_0);
-        }
-        Meta::List(_binding_0) => {
-            v.visit_meta_list_mut(_binding_0);
-        }
-        Meta::NameValue(_binding_0) => {
-            v.visit_meta_name_value_mut(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_meta_list_mut<V>(v: &mut V, node: &mut MetaList)
-where
-    V: VisitMut + ?Sized,
-{
-    v.visit_path_mut(&mut node.path);
-    v.visit_macro_delimiter_mut(&mut node.delimiter);
-    skip!(node.tokens);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_meta_name_value_mut<V>(v: &mut V, node: &mut MetaNameValue)
-where
-    V: VisitMut + ?Sized,
-{
-    v.visit_path_mut(&mut node.path);
-    skip!(node.eq_token);
-    v.visit_expr_mut(&mut node.value);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_parenthesized_generic_arguments_mut<V>(
-    v: &mut V,
-    node: &mut ParenthesizedGenericArguments,
-)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.paren_token);
-    for mut el in Punctuated::pairs_mut(&mut node.inputs) {
-        let it = el.value_mut();
-        v.visit_type_mut(it);
-    }
-    v.visit_return_type_mut(&mut node.output);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_mut<V>(v: &mut V, node: &mut Pat)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        Pat::Const(_binding_0) => {
-            v.visit_expr_const_mut(_binding_0);
-        }
-        Pat::Ident(_binding_0) => {
-            v.visit_pat_ident_mut(_binding_0);
-        }
-        Pat::Lit(_binding_0) => {
-            v.visit_expr_lit_mut(_binding_0);
-        }
-        Pat::Macro(_binding_0) => {
-            v.visit_expr_macro_mut(_binding_0);
-        }
-        Pat::Or(_binding_0) => {
-            v.visit_pat_or_mut(_binding_0);
-        }
-        Pat::Paren(_binding_0) => {
-            v.visit_pat_paren_mut(_binding_0);
-        }
-        Pat::Path(_binding_0) => {
-            v.visit_expr_path_mut(_binding_0);
-        }
-        Pat::Range(_binding_0) => {
-            v.visit_expr_range_mut(_binding_0);
-        }
-        Pat::Reference(_binding_0) => {
-            v.visit_pat_reference_mut(_binding_0);
-        }
-        Pat::Rest(_binding_0) => {
-            v.visit_pat_rest_mut(_binding_0);
-        }
-        Pat::Slice(_binding_0) => {
-            v.visit_pat_slice_mut(_binding_0);
-        }
-        Pat::Struct(_binding_0) => {
-            v.visit_pat_struct_mut(_binding_0);
-        }
-        Pat::Tuple(_binding_0) => {
-            v.visit_pat_tuple_mut(_binding_0);
-        }
-        Pat::TupleStruct(_binding_0) => {
-            v.visit_pat_tuple_struct_mut(_binding_0);
-        }
-        Pat::Type(_binding_0) => {
-            v.visit_pat_type_mut(_binding_0);
-        }
-        Pat::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-        Pat::Wild(_binding_0) => {
-            v.visit_pat_wild_mut(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_ident_mut<V>(v: &mut V, node: &mut PatIdent)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.by_ref);
-    skip!(node.mutability);
-    v.visit_ident_mut(&mut node.ident);
-    if let Some(it) = &mut node.subpat {
-        skip!((it).0);
-        v.visit_pat_mut(&mut *(it).1);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_or_mut<V>(v: &mut V, node: &mut PatOr)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.leading_vert);
-    for mut el in Punctuated::pairs_mut(&mut node.cases) {
-        let it = el.value_mut();
-        v.visit_pat_mut(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_paren_mut<V>(v: &mut V, node: &mut PatParen)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.paren_token);
-    v.visit_pat_mut(&mut *node.pat);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_reference_mut<V>(v: &mut V, node: &mut PatReference)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.and_token);
-    skip!(node.mutability);
-    v.visit_pat_mut(&mut *node.pat);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_rest_mut<V>(v: &mut V, node: &mut PatRest)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.dot2_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_slice_mut<V>(v: &mut V, node: &mut PatSlice)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.bracket_token);
-    for mut el in Punctuated::pairs_mut(&mut node.elems) {
-        let it = el.value_mut();
-        v.visit_pat_mut(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_struct_mut<V>(v: &mut V, node: &mut PatStruct)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    if let Some(it) = &mut node.qself {
-        v.visit_qself_mut(it);
-    }
-    v.visit_path_mut(&mut node.path);
-    skip!(node.brace_token);
-    for mut el in Punctuated::pairs_mut(&mut node.fields) {
-        let it = el.value_mut();
-        v.visit_field_pat_mut(it);
-    }
-    if let Some(it) = &mut node.rest {
-        v.visit_pat_rest_mut(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_tuple_mut<V>(v: &mut V, node: &mut PatTuple)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.paren_token);
-    for mut el in Punctuated::pairs_mut(&mut node.elems) {
-        let it = el.value_mut();
-        v.visit_pat_mut(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_tuple_struct_mut<V>(v: &mut V, node: &mut PatTupleStruct)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    if let Some(it) = &mut node.qself {
-        v.visit_qself_mut(it);
-    }
-    v.visit_path_mut(&mut node.path);
-    skip!(node.paren_token);
-    for mut el in Punctuated::pairs_mut(&mut node.elems) {
-        let it = el.value_mut();
-        v.visit_pat_mut(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_type_mut<V>(v: &mut V, node: &mut PatType)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_pat_mut(&mut *node.pat);
-    skip!(node.colon_token);
-    v.visit_type_mut(&mut *node.ty);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_pat_wild_mut<V>(v: &mut V, node: &mut PatWild)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.underscore_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_path_mut<V>(v: &mut V, node: &mut Path)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.leading_colon);
-    for mut el in Punctuated::pairs_mut(&mut node.segments) {
-        let it = el.value_mut();
-        v.visit_path_segment_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_path_arguments_mut<V>(v: &mut V, node: &mut PathArguments)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        PathArguments::None => {}
-        PathArguments::AngleBracketed(_binding_0) => {
-            v.visit_angle_bracketed_generic_arguments_mut(_binding_0);
-        }
-        PathArguments::Parenthesized(_binding_0) => {
-            v.visit_parenthesized_generic_arguments_mut(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_path_segment_mut<V>(v: &mut V, node: &mut PathSegment)
-where
-    V: VisitMut + ?Sized,
-{
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_path_arguments_mut(&mut node.arguments);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_predicate_lifetime_mut<V>(v: &mut V, node: &mut PredicateLifetime)
-where
-    V: VisitMut + ?Sized,
-{
-    v.visit_lifetime_mut(&mut node.lifetime);
-    skip!(node.colon_token);
-    for mut el in Punctuated::pairs_mut(&mut node.bounds) {
-        let it = el.value_mut();
-        v.visit_lifetime_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_predicate_type_mut<V>(v: &mut V, node: &mut PredicateType)
-where
-    V: VisitMut + ?Sized,
-{
-    if let Some(it) = &mut node.lifetimes {
-        v.visit_bound_lifetimes_mut(it);
-    }
-    v.visit_type_mut(&mut node.bounded_ty);
-    skip!(node.colon_token);
-    for mut el in Punctuated::pairs_mut(&mut node.bounds) {
-        let it = el.value_mut();
-        v.visit_type_param_bound_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_qself_mut<V>(v: &mut V, node: &mut QSelf)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.lt_token);
-    v.visit_type_mut(&mut *node.ty);
-    skip!(node.position);
-    skip!(node.as_token);
-    skip!(node.gt_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_range_limits_mut<V>(v: &mut V, node: &mut RangeLimits)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        RangeLimits::HalfOpen(_binding_0) => {
-            skip!(_binding_0);
-        }
-        RangeLimits::Closed(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_receiver_mut<V>(v: &mut V, node: &mut Receiver)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    if let Some(it) = &mut node.reference {
-        skip!((it).0);
-        if let Some(it) = &mut (it).1 {
-            v.visit_lifetime_mut(it);
-        }
-    }
-    skip!(node.mutability);
-    skip!(node.self_token);
-    skip!(node.colon_token);
-    v.visit_type_mut(&mut *node.ty);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_return_type_mut<V>(v: &mut V, node: &mut ReturnType)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        ReturnType::Default => {}
-        ReturnType::Type(_binding_0, _binding_1) => {
-            skip!(_binding_0);
-            v.visit_type_mut(&mut **_binding_1);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_signature_mut<V>(v: &mut V, node: &mut Signature)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.constness);
-    skip!(node.asyncness);
-    skip!(node.unsafety);
-    if let Some(it) = &mut node.abi {
-        v.visit_abi_mut(it);
-    }
-    skip!(node.fn_token);
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_generics_mut(&mut node.generics);
-    skip!(node.paren_token);
-    for mut el in Punctuated::pairs_mut(&mut node.inputs) {
-        let it = el.value_mut();
-        v.visit_fn_arg_mut(it);
-    }
-    if let Some(it) = &mut node.variadic {
-        v.visit_variadic_mut(it);
-    }
-    v.visit_return_type_mut(&mut node.output);
-}
-pub fn visit_span_mut<V>(v: &mut V, node: &mut Span)
-where
-    V: VisitMut + ?Sized,
-{}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_static_mutability_mut<V>(v: &mut V, node: &mut StaticMutability)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        StaticMutability::Mut(_binding_0) => {
-            skip!(_binding_0);
-        }
-        StaticMutability::None => {}
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_stmt_mut<V>(v: &mut V, node: &mut Stmt)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        Stmt::Local(_binding_0) => {
-            v.visit_local_mut(_binding_0);
-        }
-        Stmt::Item(_binding_0) => {
-            v.visit_item_mut(_binding_0);
-        }
-        Stmt::Expr(_binding_0, _binding_1) => {
-            v.visit_expr_mut(_binding_0);
-            skip!(_binding_1);
-        }
-        Stmt::Macro(_binding_0) => {
-            v.visit_stmt_macro_mut(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_stmt_macro_mut<V>(v: &mut V, node: &mut StmtMacro)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_macro_mut(&mut node.mac);
-    skip!(node.semi_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_trait_bound_mut<V>(v: &mut V, node: &mut TraitBound)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.paren_token);
-    v.visit_trait_bound_modifier_mut(&mut node.modifier);
-    if let Some(it) = &mut node.lifetimes {
-        v.visit_bound_lifetimes_mut(it);
-    }
-    v.visit_path_mut(&mut node.path);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_trait_bound_modifier_mut<V>(v: &mut V, node: &mut TraitBoundModifier)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        TraitBoundModifier::None => {}
-        TraitBoundModifier::Maybe(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_trait_item_mut<V>(v: &mut V, node: &mut TraitItem)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        TraitItem::Const(_binding_0) => {
-            v.visit_trait_item_const_mut(_binding_0);
-        }
-        TraitItem::Fn(_binding_0) => {
-            v.visit_trait_item_fn_mut(_binding_0);
-        }
-        TraitItem::Type(_binding_0) => {
-            v.visit_trait_item_type_mut(_binding_0);
-        }
-        TraitItem::Macro(_binding_0) => {
-            v.visit_trait_item_macro_mut(_binding_0);
-        }
-        TraitItem::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_trait_item_const_mut<V>(v: &mut V, node: &mut TraitItemConst)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.const_token);
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_generics_mut(&mut node.generics);
-    skip!(node.colon_token);
-    v.visit_type_mut(&mut node.ty);
-    if let Some(it) = &mut node.default {
-        skip!((it).0);
-        v.visit_expr_mut(&mut (it).1);
-    }
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_trait_item_fn_mut<V>(v: &mut V, node: &mut TraitItemFn)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_signature_mut(&mut node.sig);
-    if let Some(it) = &mut node.default {
-        v.visit_block_mut(it);
-    }
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_trait_item_macro_mut<V>(v: &mut V, node: &mut TraitItemMacro)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_macro_mut(&mut node.mac);
-    skip!(node.semi_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_trait_item_type_mut<V>(v: &mut V, node: &mut TraitItemType)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    skip!(node.type_token);
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_generics_mut(&mut node.generics);
-    skip!(node.colon_token);
-    for mut el in Punctuated::pairs_mut(&mut node.bounds) {
-        let it = el.value_mut();
-        v.visit_type_param_bound_mut(it);
-    }
-    if let Some(it) = &mut node.default {
-        skip!((it).0);
-        v.visit_type_mut(&mut (it).1);
-    }
-    skip!(node.semi_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_mut<V>(v: &mut V, node: &mut Type)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        Type::Array(_binding_0) => {
-            v.visit_type_array_mut(_binding_0);
-        }
-        Type::BareFn(_binding_0) => {
-            v.visit_type_bare_fn_mut(_binding_0);
-        }
-        Type::Group(_binding_0) => {
-            v.visit_type_group_mut(_binding_0);
-        }
-        Type::ImplTrait(_binding_0) => {
-            v.visit_type_impl_trait_mut(_binding_0);
-        }
-        Type::Infer(_binding_0) => {
-            v.visit_type_infer_mut(_binding_0);
-        }
-        Type::Macro(_binding_0) => {
-            v.visit_type_macro_mut(_binding_0);
-        }
-        Type::Never(_binding_0) => {
-            v.visit_type_never_mut(_binding_0);
-        }
-        Type::Paren(_binding_0) => {
-            v.visit_type_paren_mut(_binding_0);
-        }
-        Type::Path(_binding_0) => {
-            v.visit_type_path_mut(_binding_0);
-        }
-        Type::Ptr(_binding_0) => {
-            v.visit_type_ptr_mut(_binding_0);
-        }
-        Type::Reference(_binding_0) => {
-            v.visit_type_reference_mut(_binding_0);
-        }
-        Type::Slice(_binding_0) => {
-            v.visit_type_slice_mut(_binding_0);
-        }
-        Type::TraitObject(_binding_0) => {
-            v.visit_type_trait_object_mut(_binding_0);
-        }
-        Type::Tuple(_binding_0) => {
-            v.visit_type_tuple_mut(_binding_0);
-        }
-        Type::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_array_mut<V>(v: &mut V, node: &mut TypeArray)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.bracket_token);
-    v.visit_type_mut(&mut *node.elem);
-    skip!(node.semi_token);
-    v.visit_expr_mut(&mut node.len);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_bare_fn_mut<V>(v: &mut V, node: &mut TypeBareFn)
-where
-    V: VisitMut + ?Sized,
-{
-    if let Some(it) = &mut node.lifetimes {
-        v.visit_bound_lifetimes_mut(it);
-    }
-    skip!(node.unsafety);
-    if let Some(it) = &mut node.abi {
-        v.visit_abi_mut(it);
-    }
-    skip!(node.fn_token);
-    skip!(node.paren_token);
-    for mut el in Punctuated::pairs_mut(&mut node.inputs) {
-        let it = el.value_mut();
-        v.visit_bare_fn_arg_mut(it);
-    }
-    if let Some(it) = &mut node.variadic {
-        v.visit_bare_variadic_mut(it);
-    }
-    v.visit_return_type_mut(&mut node.output);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_group_mut<V>(v: &mut V, node: &mut TypeGroup)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.group_token);
-    v.visit_type_mut(&mut *node.elem);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_impl_trait_mut<V>(v: &mut V, node: &mut TypeImplTrait)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.impl_token);
-    for mut el in Punctuated::pairs_mut(&mut node.bounds) {
-        let it = el.value_mut();
-        v.visit_type_param_bound_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_infer_mut<V>(v: &mut V, node: &mut TypeInfer)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.underscore_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_macro_mut<V>(v: &mut V, node: &mut TypeMacro)
-where
-    V: VisitMut + ?Sized,
-{
-    v.visit_macro_mut(&mut node.mac);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_never_mut<V>(v: &mut V, node: &mut TypeNever)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.bang_token);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_param_mut<V>(v: &mut V, node: &mut TypeParam)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_ident_mut(&mut node.ident);
-    skip!(node.colon_token);
-    for mut el in Punctuated::pairs_mut(&mut node.bounds) {
-        let it = el.value_mut();
-        v.visit_type_param_bound_mut(it);
-    }
-    skip!(node.eq_token);
-    if let Some(it) = &mut node.default {
-        v.visit_type_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_param_bound_mut<V>(v: &mut V, node: &mut TypeParamBound)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        TypeParamBound::Trait(_binding_0) => {
-            v.visit_trait_bound_mut(_binding_0);
-        }
-        TypeParamBound::Lifetime(_binding_0) => {
-            v.visit_lifetime_mut(_binding_0);
-        }
-        TypeParamBound::Verbatim(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_paren_mut<V>(v: &mut V, node: &mut TypeParen)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.paren_token);
-    v.visit_type_mut(&mut *node.elem);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_path_mut<V>(v: &mut V, node: &mut TypePath)
-where
-    V: VisitMut + ?Sized,
-{
-    if let Some(it) = &mut node.qself {
-        v.visit_qself_mut(it);
-    }
-    v.visit_path_mut(&mut node.path);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_ptr_mut<V>(v: &mut V, node: &mut TypePtr)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.star_token);
-    skip!(node.const_token);
-    skip!(node.mutability);
-    v.visit_type_mut(&mut *node.elem);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_reference_mut<V>(v: &mut V, node: &mut TypeReference)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.and_token);
-    if let Some(it) = &mut node.lifetime {
-        v.visit_lifetime_mut(it);
-    }
-    skip!(node.mutability);
-    v.visit_type_mut(&mut *node.elem);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_slice_mut<V>(v: &mut V, node: &mut TypeSlice)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.bracket_token);
-    v.visit_type_mut(&mut *node.elem);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_trait_object_mut<V>(v: &mut V, node: &mut TypeTraitObject)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.dyn_token);
-    for mut el in Punctuated::pairs_mut(&mut node.bounds) {
-        let it = el.value_mut();
-        v.visit_type_param_bound_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_type_tuple_mut<V>(v: &mut V, node: &mut TypeTuple)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.paren_token);
-    for mut el in Punctuated::pairs_mut(&mut node.elems) {
-        let it = el.value_mut();
-        v.visit_type_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_un_op_mut<V>(v: &mut V, node: &mut UnOp)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        UnOp::Deref(_binding_0) => {
-            skip!(_binding_0);
-        }
-        UnOp::Not(_binding_0) => {
-            skip!(_binding_0);
-        }
-        UnOp::Neg(_binding_0) => {
-            skip!(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_use_glob_mut<V>(v: &mut V, node: &mut UseGlob)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.star_token);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_use_group_mut<V>(v: &mut V, node: &mut UseGroup)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.brace_token);
-    for mut el in Punctuated::pairs_mut(&mut node.items) {
-        let it = el.value_mut();
-        v.visit_use_tree_mut(it);
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_use_name_mut<V>(v: &mut V, node: &mut UseName)
-where
-    V: VisitMut + ?Sized,
-{
-    v.visit_ident_mut(&mut node.ident);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_use_path_mut<V>(v: &mut V, node: &mut UsePath)
-where
-    V: VisitMut + ?Sized,
-{
-    v.visit_ident_mut(&mut node.ident);
-    skip!(node.colon2_token);
-    v.visit_use_tree_mut(&mut *node.tree);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_use_rename_mut<V>(v: &mut V, node: &mut UseRename)
-where
-    V: VisitMut + ?Sized,
-{
-    v.visit_ident_mut(&mut node.ident);
-    skip!(node.as_token);
-    v.visit_ident_mut(&mut node.rename);
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_use_tree_mut<V>(v: &mut V, node: &mut UseTree)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        UseTree::Path(_binding_0) => {
-            v.visit_use_path_mut(_binding_0);
-        }
-        UseTree::Name(_binding_0) => {
-            v.visit_use_name_mut(_binding_0);
-        }
-        UseTree::Rename(_binding_0) => {
-            v.visit_use_rename_mut(_binding_0);
-        }
-        UseTree::Glob(_binding_0) => {
-            v.visit_use_glob_mut(_binding_0);
-        }
-        UseTree::Group(_binding_0) => {
-            v.visit_use_group_mut(_binding_0);
-        }
-    }
-}
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub fn visit_variadic_mut<V>(v: &mut V, node: &mut Variadic)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    if let Some(it) = &mut node.pat {
-        v.visit_pat_mut(&mut *(it).0);
-        skip!((it).1);
-    }
-    skip!(node.dots);
-    skip!(node.comma);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_variant_mut<V>(v: &mut V, node: &mut Variant)
-where
-    V: VisitMut + ?Sized,
-{
-    for it in &mut node.attrs {
-        v.visit_attribute_mut(it);
-    }
-    v.visit_ident_mut(&mut node.ident);
-    v.visit_fields_mut(&mut node.fields);
-    if let Some(it) = &mut node.discriminant {
-        skip!((it).0);
-        v.visit_expr_mut(&mut (it).1);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_vis_restricted_mut<V>(v: &mut V, node: &mut VisRestricted)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.pub_token);
-    skip!(node.paren_token);
-    skip!(node.in_token);
-    v.visit_path_mut(&mut *node.path);
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_visibility_mut<V>(v: &mut V, node: &mut Visibility)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        Visibility::Public(_binding_0) => {
-            skip!(_binding_0);
-        }
-        Visibility::Restricted(_binding_0) => {
-            v.visit_vis_restricted_mut(_binding_0);
-        }
-        Visibility::Inherited => {}
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_where_clause_mut<V>(v: &mut V, node: &mut WhereClause)
-where
-    V: VisitMut + ?Sized,
-{
-    skip!(node.where_token);
-    for mut el in Punctuated::pairs_mut(&mut node.predicates) {
-        let it = el.value_mut();
-        v.visit_where_predicate_mut(it);
-    }
-}
-#[cfg(any(feature = "derive", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "derive", feature = "full"))))]
-pub fn visit_where_predicate_mut<V>(v: &mut V, node: &mut WherePredicate)
-where
-    V: VisitMut + ?Sized,
-{
-    match node {
-        WherePredicate::Lifetime(_binding_0) => {
-            v.visit_predicate_lifetime_mut(_binding_0);
-        }
-        WherePredicate::Type(_binding_0) => {
-            v.visit_predicate_type_mut(_binding_0);
-        }
-    }
-}
diff --git a/vendor/syn/src/gen_helper.rs b/vendor/syn/src/gen_helper.rs
deleted file mode 100644
index e433bac..0000000
--- a/vendor/syn/src/gen_helper.rs
+++ /dev/null
@@ -1,34 +0,0 @@
-#[cfg(feature = "fold")]
-pub(crate) mod fold {
-    use crate::punctuated::{Pair, Punctuated};
-
-    pub(crate) trait FoldHelper {
-        type Item;
-        fn lift<F>(self, f: F) -> Self
-        where
-            F: FnMut(Self::Item) -> Self::Item;
-    }
-
-    impl<T> FoldHelper for Vec<T> {
-        type Item = T;
-        fn lift<F>(self, f: F) -> Self
-        where
-            F: FnMut(Self::Item) -> Self::Item,
-        {
-            self.into_iter().map(f).collect()
-        }
-    }
-
-    impl<T, U> FoldHelper for Punctuated<T, U> {
-        type Item = T;
-        fn lift<F>(self, mut f: F) -> Self
-        where
-            F: FnMut(Self::Item) -> Self::Item,
-        {
-            self.into_pairs()
-                .map(Pair::into_tuple)
-                .map(|(t, u)| Pair::new(f(t), u))
-                .collect()
-        }
-    }
-}
diff --git a/vendor/syn/src/generics.rs b/vendor/syn/src/generics.rs
deleted file mode 100644
index aed50e3..0000000
--- a/vendor/syn/src/generics.rs
+++ /dev/null
@@ -1,1227 +0,0 @@
-use super::*;
-use crate::punctuated::{Iter, IterMut, Punctuated};
-use proc_macro2::TokenStream;
-#[cfg(all(feature = "printing", feature = "extra-traits"))]
-use std::fmt::{self, Debug};
-#[cfg(all(feature = "printing", feature = "extra-traits"))]
-use std::hash::{Hash, Hasher};
-
-ast_struct! {
-    /// Lifetimes and type parameters attached to a declaration of a function,
-    /// enum, trait, etc.
-    ///
-    /// This struct represents two distinct optional syntactic elements,
-    /// [generic parameters] and [where clause]. In some locations of the
-    /// grammar, there may be other tokens in between these two things.
-    ///
-    /// [generic parameters]: https://doc.rust-lang.org/stable/reference/items/generics.html#generic-parameters
-    /// [where clause]: https://doc.rust-lang.org/stable/reference/items/generics.html#where-clauses
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct Generics {
-        pub lt_token: Option<Token![<]>,
-        pub params: Punctuated<GenericParam, Token![,]>,
-        pub gt_token: Option<Token![>]>,
-        pub where_clause: Option<WhereClause>,
-    }
-}
-
-ast_enum_of_structs! {
-    /// A generic type parameter, lifetime, or const generic: `T: Into<String>`,
-    /// `'a: 'b`, `const LEN: usize`.
-    ///
-    /// # Syntax tree enum
-    ///
-    /// This type is a [syntax tree enum].
-    ///
-    /// [syntax tree enum]: Expr#syntax-tree-enums
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub enum GenericParam {
-        /// A lifetime parameter: `'a: 'b + 'c + 'd`.
-        Lifetime(LifetimeParam),
-
-        /// A generic type parameter: `T: Into<String>`.
-        Type(TypeParam),
-
-        /// A const generic parameter: `const LENGTH: usize`.
-        Const(ConstParam),
-    }
-}
-
-ast_struct! {
-    /// A lifetime definition: `'a: 'b + 'c + 'd`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct LifetimeParam {
-        pub attrs: Vec<Attribute>,
-        pub lifetime: Lifetime,
-        pub colon_token: Option<Token![:]>,
-        pub bounds: Punctuated<Lifetime, Token![+]>,
-    }
-}
-
-ast_struct! {
-    /// A generic type parameter: `T: Into<String>`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TypeParam {
-        pub attrs: Vec<Attribute>,
-        pub ident: Ident,
-        pub colon_token: Option<Token![:]>,
-        pub bounds: Punctuated<TypeParamBound, Token![+]>,
-        pub eq_token: Option<Token![=]>,
-        pub default: Option<Type>,
-    }
-}
-
-ast_struct! {
-    /// A const generic parameter: `const LENGTH: usize`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct ConstParam {
-        pub attrs: Vec<Attribute>,
-        pub const_token: Token![const],
-        pub ident: Ident,
-        pub colon_token: Token![:],
-        pub ty: Type,
-        pub eq_token: Option<Token![=]>,
-        pub default: Option<Expr>,
-    }
-}
-
-impl Default for Generics {
-    fn default() -> Self {
-        Generics {
-            lt_token: None,
-            params: Punctuated::new(),
-            gt_token: None,
-            where_clause: None,
-        }
-    }
-}
-
-impl Generics {
-    /// Returns an
-    /// <code
-    ///   style="padding-right:0;">Iterator&lt;Item = &amp;</code><a
-    ///   href="struct.LifetimeParam.html"><code
-    ///   style="padding-left:0;padding-right:0;">LifetimeParam</code></a><code
-    ///   style="padding-left:0;">&gt;</code>
-    /// over the lifetime parameters in `self.params`.
-    pub fn lifetimes(&self) -> Lifetimes {
-        Lifetimes(self.params.iter())
-    }
-
-    /// Returns an
-    /// <code
-    ///   style="padding-right:0;">Iterator&lt;Item = &amp;mut </code><a
-    ///   href="struct.LifetimeParam.html"><code
-    ///   style="padding-left:0;padding-right:0;">LifetimeParam</code></a><code
-    ///   style="padding-left:0;">&gt;</code>
-    /// over the lifetime parameters in `self.params`.
-    pub fn lifetimes_mut(&mut self) -> LifetimesMut {
-        LifetimesMut(self.params.iter_mut())
-    }
-
-    /// Returns an
-    /// <code
-    ///   style="padding-right:0;">Iterator&lt;Item = &amp;</code><a
-    ///   href="struct.TypeParam.html"><code
-    ///   style="padding-left:0;padding-right:0;">TypeParam</code></a><code
-    ///   style="padding-left:0;">&gt;</code>
-    /// over the type parameters in `self.params`.
-    pub fn type_params(&self) -> TypeParams {
-        TypeParams(self.params.iter())
-    }
-
-    /// Returns an
-    /// <code
-    ///   style="padding-right:0;">Iterator&lt;Item = &amp;mut </code><a
-    ///   href="struct.TypeParam.html"><code
-    ///   style="padding-left:0;padding-right:0;">TypeParam</code></a><code
-    ///   style="padding-left:0;">&gt;</code>
-    /// over the type parameters in `self.params`.
-    pub fn type_params_mut(&mut self) -> TypeParamsMut {
-        TypeParamsMut(self.params.iter_mut())
-    }
-
-    /// Returns an
-    /// <code
-    ///   style="padding-right:0;">Iterator&lt;Item = &amp;</code><a
-    ///   href="struct.ConstParam.html"><code
-    ///   style="padding-left:0;padding-right:0;">ConstParam</code></a><code
-    ///   style="padding-left:0;">&gt;</code>
-    /// over the constant parameters in `self.params`.
-    pub fn const_params(&self) -> ConstParams {
-        ConstParams(self.params.iter())
-    }
-
-    /// Returns an
-    /// <code
-    ///   style="padding-right:0;">Iterator&lt;Item = &amp;mut </code><a
-    ///   href="struct.ConstParam.html"><code
-    ///   style="padding-left:0;padding-right:0;">ConstParam</code></a><code
-    ///   style="padding-left:0;">&gt;</code>
-    /// over the constant parameters in `self.params`.
-    pub fn const_params_mut(&mut self) -> ConstParamsMut {
-        ConstParamsMut(self.params.iter_mut())
-    }
-
-    /// Initializes an empty `where`-clause if there is not one present already.
-    pub fn make_where_clause(&mut self) -> &mut WhereClause {
-        self.where_clause.get_or_insert_with(|| WhereClause {
-            where_token: <Token![where]>::default(),
-            predicates: Punctuated::new(),
-        })
-    }
-}
-
-pub struct Lifetimes<'a>(Iter<'a, GenericParam>);
-
-impl<'a> Iterator for Lifetimes<'a> {
-    type Item = &'a LifetimeParam;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        let next = match self.0.next() {
-            Some(item) => item,
-            None => return None,
-        };
-        if let GenericParam::Lifetime(lifetime) = next {
-            Some(lifetime)
-        } else {
-            self.next()
-        }
-    }
-}
-
-pub struct LifetimesMut<'a>(IterMut<'a, GenericParam>);
-
-impl<'a> Iterator for LifetimesMut<'a> {
-    type Item = &'a mut LifetimeParam;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        let next = match self.0.next() {
-            Some(item) => item,
-            None => return None,
-        };
-        if let GenericParam::Lifetime(lifetime) = next {
-            Some(lifetime)
-        } else {
-            self.next()
-        }
-    }
-}
-
-pub struct TypeParams<'a>(Iter<'a, GenericParam>);
-
-impl<'a> Iterator for TypeParams<'a> {
-    type Item = &'a TypeParam;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        let next = match self.0.next() {
-            Some(item) => item,
-            None => return None,
-        };
-        if let GenericParam::Type(type_param) = next {
-            Some(type_param)
-        } else {
-            self.next()
-        }
-    }
-}
-
-pub struct TypeParamsMut<'a>(IterMut<'a, GenericParam>);
-
-impl<'a> Iterator for TypeParamsMut<'a> {
-    type Item = &'a mut TypeParam;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        let next = match self.0.next() {
-            Some(item) => item,
-            None => return None,
-        };
-        if let GenericParam::Type(type_param) = next {
-            Some(type_param)
-        } else {
-            self.next()
-        }
-    }
-}
-
-pub struct ConstParams<'a>(Iter<'a, GenericParam>);
-
-impl<'a> Iterator for ConstParams<'a> {
-    type Item = &'a ConstParam;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        let next = match self.0.next() {
-            Some(item) => item,
-            None => return None,
-        };
-        if let GenericParam::Const(const_param) = next {
-            Some(const_param)
-        } else {
-            self.next()
-        }
-    }
-}
-
-pub struct ConstParamsMut<'a>(IterMut<'a, GenericParam>);
-
-impl<'a> Iterator for ConstParamsMut<'a> {
-    type Item = &'a mut ConstParam;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        let next = match self.0.next() {
-            Some(item) => item,
-            None => return None,
-        };
-        if let GenericParam::Const(const_param) = next {
-            Some(const_param)
-        } else {
-            self.next()
-        }
-    }
-}
-
-/// Returned by `Generics::split_for_impl`.
-#[cfg(feature = "printing")]
-#[cfg_attr(
-    doc_cfg,
-    doc(cfg(all(any(feature = "full", feature = "derive"), feature = "printing")))
-)]
-pub struct ImplGenerics<'a>(&'a Generics);
-
-/// Returned by `Generics::split_for_impl`.
-#[cfg(feature = "printing")]
-#[cfg_attr(
-    doc_cfg,
-    doc(cfg(all(any(feature = "full", feature = "derive"), feature = "printing")))
-)]
-pub struct TypeGenerics<'a>(&'a Generics);
-
-/// Returned by `TypeGenerics::as_turbofish`.
-#[cfg(feature = "printing")]
-#[cfg_attr(
-    doc_cfg,
-    doc(cfg(all(any(feature = "full", feature = "derive"), feature = "printing")))
-)]
-pub struct Turbofish<'a>(&'a Generics);
-
-#[cfg(feature = "printing")]
-impl Generics {
-    /// Split a type's generics into the pieces required for impl'ing a trait
-    /// for that type.
-    ///
-    /// ```
-    /// # use proc_macro2::{Span, Ident};
-    /// # use quote::quote;
-    /// #
-    /// # let generics: syn::Generics = Default::default();
-    /// # let name = Ident::new("MyType", Span::call_site());
-    /// #
-    /// let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
-    /// quote! {
-    ///     impl #impl_generics MyTrait for #name #ty_generics #where_clause {
-    ///         // ...
-    ///     }
-    /// }
-    /// # ;
-    /// ```
-    #[cfg_attr(
-        doc_cfg,
-        doc(cfg(all(any(feature = "full", feature = "derive"), feature = "printing")))
-    )]
-    pub fn split_for_impl(&self) -> (ImplGenerics, TypeGenerics, Option<&WhereClause>) {
-        (
-            ImplGenerics(self),
-            TypeGenerics(self),
-            self.where_clause.as_ref(),
-        )
-    }
-}
-
-#[cfg(feature = "printing")]
-macro_rules! generics_wrapper_impls {
-    ($ty:ident) => {
-        #[cfg(feature = "clone-impls")]
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-        impl<'a> Clone for $ty<'a> {
-            fn clone(&self) -> Self {
-                $ty(self.0)
-            }
-        }
-
-        #[cfg(feature = "extra-traits")]
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-        impl<'a> Debug for $ty<'a> {
-            fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                formatter
-                    .debug_tuple(stringify!($ty))
-                    .field(self.0)
-                    .finish()
-            }
-        }
-
-        #[cfg(feature = "extra-traits")]
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-        impl<'a> Eq for $ty<'a> {}
-
-        #[cfg(feature = "extra-traits")]
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-        impl<'a> PartialEq for $ty<'a> {
-            fn eq(&self, other: &Self) -> bool {
-                self.0 == other.0
-            }
-        }
-
-        #[cfg(feature = "extra-traits")]
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-        impl<'a> Hash for $ty<'a> {
-            fn hash<H: Hasher>(&self, state: &mut H) {
-                self.0.hash(state);
-            }
-        }
-    };
-}
-
-#[cfg(feature = "printing")]
-generics_wrapper_impls!(ImplGenerics);
-#[cfg(feature = "printing")]
-generics_wrapper_impls!(TypeGenerics);
-#[cfg(feature = "printing")]
-generics_wrapper_impls!(Turbofish);
-
-#[cfg(feature = "printing")]
-impl<'a> TypeGenerics<'a> {
-    /// Turn a type's generics like `<X, Y>` into a turbofish like `::<X, Y>`.
-    pub fn as_turbofish(&self) -> Turbofish {
-        Turbofish(self.0)
-    }
-}
-
-ast_struct! {
-    /// A set of bound lifetimes: `for<'a, 'b, 'c>`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct BoundLifetimes {
-        pub for_token: Token![for],
-        pub lt_token: Token![<],
-        pub lifetimes: Punctuated<GenericParam, Token![,]>,
-        pub gt_token: Token![>],
-    }
-}
-
-impl Default for BoundLifetimes {
-    fn default() -> Self {
-        BoundLifetimes {
-            for_token: Default::default(),
-            lt_token: Default::default(),
-            lifetimes: Punctuated::new(),
-            gt_token: Default::default(),
-        }
-    }
-}
-
-impl LifetimeParam {
-    pub fn new(lifetime: Lifetime) -> Self {
-        LifetimeParam {
-            attrs: Vec::new(),
-            lifetime,
-            colon_token: None,
-            bounds: Punctuated::new(),
-        }
-    }
-}
-
-impl From<Ident> for TypeParam {
-    fn from(ident: Ident) -> Self {
-        TypeParam {
-            attrs: vec![],
-            ident,
-            colon_token: None,
-            bounds: Punctuated::new(),
-            eq_token: None,
-            default: None,
-        }
-    }
-}
-
-ast_enum_of_structs! {
-    /// A trait or lifetime used as a bound on a type parameter.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    #[non_exhaustive]
-    pub enum TypeParamBound {
-        Trait(TraitBound),
-        Lifetime(Lifetime),
-        Verbatim(TokenStream),
-    }
-}
-
-ast_struct! {
-    /// A trait used as a bound on a type parameter.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TraitBound {
-        pub paren_token: Option<token::Paren>,
-        pub modifier: TraitBoundModifier,
-        /// The `for<'a>` in `for<'a> Foo<&'a T>`
-        pub lifetimes: Option<BoundLifetimes>,
-        /// The `Foo<&'a T>` in `for<'a> Foo<&'a T>`
-        pub path: Path,
-    }
-}
-
-ast_enum! {
-    /// A modifier on a trait bound, currently only used for the `?` in
-    /// `?Sized`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub enum TraitBoundModifier {
-        None,
-        Maybe(Token![?]),
-    }
-}
-
-ast_struct! {
-    /// A `where` clause in a definition: `where T: Deserialize<'de>, D:
-    /// 'static`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct WhereClause {
-        pub where_token: Token![where],
-        pub predicates: Punctuated<WherePredicate, Token![,]>,
-    }
-}
-
-ast_enum_of_structs! {
-    /// A single predicate in a `where` clause: `T: Deserialize<'de>`.
-    ///
-    /// # Syntax tree enum
-    ///
-    /// This type is a [syntax tree enum].
-    ///
-    /// [syntax tree enum]: Expr#syntax-tree-enums
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    #[non_exhaustive]
-    pub enum WherePredicate {
-        /// A lifetime predicate in a `where` clause: `'a: 'b + 'c`.
-        Lifetime(PredicateLifetime),
-
-        /// A type predicate in a `where` clause: `for<'c> Foo<'c>: Trait<'c>`.
-        Type(PredicateType),
-    }
-}
-
-ast_struct! {
-    /// A lifetime predicate in a `where` clause: `'a: 'b + 'c`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct PredicateLifetime {
-        pub lifetime: Lifetime,
-        pub colon_token: Token![:],
-        pub bounds: Punctuated<Lifetime, Token![+]>,
-    }
-}
-
-ast_struct! {
-    /// A type predicate in a `where` clause: `for<'c> Foo<'c>: Trait<'c>`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct PredicateType {
-        /// Any lifetimes from a `for` binding
-        pub lifetimes: Option<BoundLifetimes>,
-        /// The type being bounded
-        pub bounded_ty: Type,
-        pub colon_token: Token![:],
-        /// Trait and lifetime bounds (`Clone+Send+'static`)
-        pub bounds: Punctuated<TypeParamBound, Token![+]>,
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::*;
-    use crate::ext::IdentExt as _;
-    use crate::parse::{Parse, ParseStream, Result};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Generics {
-        fn parse(input: ParseStream) -> Result<Self> {
-            if !input.peek(Token![<]) {
-                return Ok(Generics::default());
-            }
-
-            let lt_token: Token![<] = input.parse()?;
-
-            let mut params = Punctuated::new();
-            loop {
-                if input.peek(Token![>]) {
-                    break;
-                }
-
-                let attrs = input.call(Attribute::parse_outer)?;
-                let lookahead = input.lookahead1();
-                if lookahead.peek(Lifetime) {
-                    params.push_value(GenericParam::Lifetime(LifetimeParam {
-                        attrs,
-                        ..input.parse()?
-                    }));
-                } else if lookahead.peek(Ident) {
-                    params.push_value(GenericParam::Type(TypeParam {
-                        attrs,
-                        ..input.parse()?
-                    }));
-                } else if lookahead.peek(Token![const]) {
-                    params.push_value(GenericParam::Const(ConstParam {
-                        attrs,
-                        ..input.parse()?
-                    }));
-                } else if input.peek(Token![_]) {
-                    params.push_value(GenericParam::Type(TypeParam {
-                        attrs,
-                        ident: input.call(Ident::parse_any)?,
-                        colon_token: None,
-                        bounds: Punctuated::new(),
-                        eq_token: None,
-                        default: None,
-                    }));
-                } else {
-                    return Err(lookahead.error());
-                }
-
-                if input.peek(Token![>]) {
-                    break;
-                }
-                let punct = input.parse()?;
-                params.push_punct(punct);
-            }
-
-            let gt_token: Token![>] = input.parse()?;
-
-            Ok(Generics {
-                lt_token: Some(lt_token),
-                params,
-                gt_token: Some(gt_token),
-                where_clause: None,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for GenericParam {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-
-            let lookahead = input.lookahead1();
-            if lookahead.peek(Ident) {
-                Ok(GenericParam::Type(TypeParam {
-                    attrs,
-                    ..input.parse()?
-                }))
-            } else if lookahead.peek(Lifetime) {
-                Ok(GenericParam::Lifetime(LifetimeParam {
-                    attrs,
-                    ..input.parse()?
-                }))
-            } else if lookahead.peek(Token![const]) {
-                Ok(GenericParam::Const(ConstParam {
-                    attrs,
-                    ..input.parse()?
-                }))
-            } else {
-                Err(lookahead.error())
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for LifetimeParam {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let has_colon;
-            Ok(LifetimeParam {
-                attrs: input.call(Attribute::parse_outer)?,
-                lifetime: input.parse()?,
-                colon_token: {
-                    if input.peek(Token![:]) {
-                        has_colon = true;
-                        Some(input.parse()?)
-                    } else {
-                        has_colon = false;
-                        None
-                    }
-                },
-                bounds: {
-                    let mut bounds = Punctuated::new();
-                    if has_colon {
-                        loop {
-                            if input.peek(Token![,]) || input.peek(Token![>]) {
-                                break;
-                            }
-                            let value = input.parse()?;
-                            bounds.push_value(value);
-                            if !input.peek(Token![+]) {
-                                break;
-                            }
-                            let punct = input.parse()?;
-                            bounds.push_punct(punct);
-                        }
-                    }
-                    bounds
-                },
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for BoundLifetimes {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(BoundLifetimes {
-                for_token: input.parse()?,
-                lt_token: input.parse()?,
-                lifetimes: {
-                    let mut lifetimes = Punctuated::new();
-                    while !input.peek(Token![>]) {
-                        let attrs = input.call(Attribute::parse_outer)?;
-                        let lifetime: Lifetime = input.parse()?;
-                        lifetimes.push_value(GenericParam::Lifetime(LifetimeParam {
-                            attrs,
-                            lifetime,
-                            colon_token: None,
-                            bounds: Punctuated::new(),
-                        }));
-                        if input.peek(Token![>]) {
-                            break;
-                        }
-                        lifetimes.push_punct(input.parse()?);
-                    }
-                    lifetimes
-                },
-                gt_token: input.parse()?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Option<BoundLifetimes> {
-        fn parse(input: ParseStream) -> Result<Self> {
-            if input.peek(Token![for]) {
-                input.parse().map(Some)
-            } else {
-                Ok(None)
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypeParam {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let ident: Ident = input.parse()?;
-            let colon_token: Option<Token![:]> = input.parse()?;
-
-            let mut bounds = Punctuated::new();
-            if colon_token.is_some() {
-                loop {
-                    if input.peek(Token![,]) || input.peek(Token![>]) || input.peek(Token![=]) {
-                        break;
-                    }
-                    let value: TypeParamBound = input.parse()?;
-                    bounds.push_value(value);
-                    if !input.peek(Token![+]) {
-                        break;
-                    }
-                    let punct: Token![+] = input.parse()?;
-                    bounds.push_punct(punct);
-                }
-            }
-
-            let eq_token: Option<Token![=]> = input.parse()?;
-            let default = if eq_token.is_some() {
-                Some(input.parse::<Type>()?)
-            } else {
-                None
-            };
-
-            Ok(TypeParam {
-                attrs,
-                ident,
-                colon_token,
-                bounds,
-                eq_token,
-                default,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypeParamBound {
-        fn parse(input: ParseStream) -> Result<Self> {
-            if input.peek(Lifetime) {
-                return input.parse().map(TypeParamBound::Lifetime);
-            }
-
-            let begin = input.fork();
-
-            let content;
-            let (paren_token, content) = if input.peek(token::Paren) {
-                (Some(parenthesized!(content in input)), &content)
-            } else {
-                (None, input)
-            };
-
-            let is_tilde_const =
-                cfg!(feature = "full") && content.peek(Token![~]) && content.peek2(Token![const]);
-            if is_tilde_const {
-                content.parse::<Token![~]>()?;
-                content.parse::<Token![const]>()?;
-            }
-
-            let mut bound: TraitBound = content.parse()?;
-            bound.paren_token = paren_token;
-
-            if is_tilde_const {
-                Ok(TypeParamBound::Verbatim(verbatim::between(&begin, input)))
-            } else {
-                Ok(TypeParamBound::Trait(bound))
-            }
-        }
-    }
-
-    impl TypeParamBound {
-        pub(crate) fn parse_multiple(
-            input: ParseStream,
-            allow_plus: bool,
-        ) -> Result<Punctuated<Self, Token![+]>> {
-            let mut bounds = Punctuated::new();
-            loop {
-                bounds.push_value(input.parse()?);
-                if !(allow_plus && input.peek(Token![+])) {
-                    break;
-                }
-                bounds.push_punct(input.parse()?);
-                if !(input.peek(Ident::peek_any)
-                    || input.peek(Token![::])
-                    || input.peek(Token![?])
-                    || input.peek(Lifetime)
-                    || input.peek(token::Paren)
-                    || input.peek(Token![~]))
-                {
-                    break;
-                }
-            }
-            Ok(bounds)
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TraitBound {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let modifier: TraitBoundModifier = input.parse()?;
-            let lifetimes: Option<BoundLifetimes> = input.parse()?;
-
-            let mut path: Path = input.parse()?;
-            if path.segments.last().unwrap().arguments.is_empty()
-                && (input.peek(token::Paren) || input.peek(Token![::]) && input.peek3(token::Paren))
-            {
-                input.parse::<Option<Token![::]>>()?;
-                let args: ParenthesizedGenericArguments = input.parse()?;
-                let parenthesized = PathArguments::Parenthesized(args);
-                path.segments.last_mut().unwrap().arguments = parenthesized;
-            }
-
-            Ok(TraitBound {
-                paren_token: None,
-                modifier,
-                lifetimes,
-                path,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TraitBoundModifier {
-        fn parse(input: ParseStream) -> Result<Self> {
-            if input.peek(Token![?]) {
-                input.parse().map(TraitBoundModifier::Maybe)
-            } else {
-                Ok(TraitBoundModifier::None)
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ConstParam {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let mut default = None;
-            Ok(ConstParam {
-                attrs: input.call(Attribute::parse_outer)?,
-                const_token: input.parse()?,
-                ident: input.parse()?,
-                colon_token: input.parse()?,
-                ty: input.parse()?,
-                eq_token: {
-                    if input.peek(Token![=]) {
-                        let eq_token = input.parse()?;
-                        default = Some(path::parsing::const_argument(input)?);
-                        Some(eq_token)
-                    } else {
-                        None
-                    }
-                },
-                default,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for WhereClause {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(WhereClause {
-                where_token: input.parse()?,
-                predicates: {
-                    let mut predicates = Punctuated::new();
-                    loop {
-                        if input.is_empty()
-                            || input.peek(token::Brace)
-                            || input.peek(Token![,])
-                            || input.peek(Token![;])
-                            || input.peek(Token![:]) && !input.peek(Token![::])
-                            || input.peek(Token![=])
-                        {
-                            break;
-                        }
-                        let value = input.parse()?;
-                        predicates.push_value(value);
-                        if !input.peek(Token![,]) {
-                            break;
-                        }
-                        let punct = input.parse()?;
-                        predicates.push_punct(punct);
-                    }
-                    predicates
-                },
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Option<WhereClause> {
-        fn parse(input: ParseStream) -> Result<Self> {
-            if input.peek(Token![where]) {
-                input.parse().map(Some)
-            } else {
-                Ok(None)
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for WherePredicate {
-        fn parse(input: ParseStream) -> Result<Self> {
-            if input.peek(Lifetime) && input.peek2(Token![:]) {
-                Ok(WherePredicate::Lifetime(PredicateLifetime {
-                    lifetime: input.parse()?,
-                    colon_token: input.parse()?,
-                    bounds: {
-                        let mut bounds = Punctuated::new();
-                        loop {
-                            if input.is_empty()
-                                || input.peek(token::Brace)
-                                || input.peek(Token![,])
-                                || input.peek(Token![;])
-                                || input.peek(Token![:])
-                                || input.peek(Token![=])
-                            {
-                                break;
-                            }
-                            let value = input.parse()?;
-                            bounds.push_value(value);
-                            if !input.peek(Token![+]) {
-                                break;
-                            }
-                            let punct = input.parse()?;
-                            bounds.push_punct(punct);
-                        }
-                        bounds
-                    },
-                }))
-            } else {
-                Ok(WherePredicate::Type(PredicateType {
-                    lifetimes: input.parse()?,
-                    bounded_ty: input.parse()?,
-                    colon_token: input.parse()?,
-                    bounds: {
-                        let mut bounds = Punctuated::new();
-                        loop {
-                            if input.is_empty()
-                                || input.peek(token::Brace)
-                                || input.peek(Token![,])
-                                || input.peek(Token![;])
-                                || input.peek(Token![:]) && !input.peek(Token![::])
-                                || input.peek(Token![=])
-                            {
-                                break;
-                            }
-                            let value = input.parse()?;
-                            bounds.push_value(value);
-                            if !input.peek(Token![+]) {
-                                break;
-                            }
-                            let punct = input.parse()?;
-                            bounds.push_punct(punct);
-                        }
-                        bounds
-                    },
-                }))
-            }
-        }
-    }
-}
-
-#[cfg(feature = "printing")]
-mod printing {
-    use super::*;
-    use crate::attr::FilterAttrs;
-    use crate::print::TokensOrDefault;
-    use proc_macro2::TokenStream;
-    use quote::{ToTokens, TokenStreamExt};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Generics {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            if self.params.is_empty() {
-                return;
-            }
-
-            TokensOrDefault(&self.lt_token).to_tokens(tokens);
-
-            // Print lifetimes before types and consts, regardless of their
-            // order in self.params.
-            let mut trailing_or_empty = true;
-            for param in self.params.pairs() {
-                if let GenericParam::Lifetime(_) = **param.value() {
-                    param.to_tokens(tokens);
-                    trailing_or_empty = param.punct().is_some();
-                }
-            }
-            for param in self.params.pairs() {
-                match param.value() {
-                    GenericParam::Type(_) | GenericParam::Const(_) => {
-                        if !trailing_or_empty {
-                            <Token![,]>::default().to_tokens(tokens);
-                            trailing_or_empty = true;
-                        }
-                        param.to_tokens(tokens);
-                    }
-                    GenericParam::Lifetime(_) => {}
-                }
-            }
-
-            TokensOrDefault(&self.gt_token).to_tokens(tokens);
-        }
-    }
-
-    impl<'a> ToTokens for ImplGenerics<'a> {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            if self.0.params.is_empty() {
-                return;
-            }
-
-            TokensOrDefault(&self.0.lt_token).to_tokens(tokens);
-
-            // Print lifetimes before types and consts, regardless of their
-            // order in self.params.
-            let mut trailing_or_empty = true;
-            for param in self.0.params.pairs() {
-                if let GenericParam::Lifetime(_) = **param.value() {
-                    param.to_tokens(tokens);
-                    trailing_or_empty = param.punct().is_some();
-                }
-            }
-            for param in self.0.params.pairs() {
-                if let GenericParam::Lifetime(_) = **param.value() {
-                    continue;
-                }
-                if !trailing_or_empty {
-                    <Token![,]>::default().to_tokens(tokens);
-                    trailing_or_empty = true;
-                }
-                match param.value() {
-                    GenericParam::Lifetime(_) => unreachable!(),
-                    GenericParam::Type(param) => {
-                        // Leave off the type parameter defaults
-                        tokens.append_all(param.attrs.outer());
-                        param.ident.to_tokens(tokens);
-                        if !param.bounds.is_empty() {
-                            TokensOrDefault(&param.colon_token).to_tokens(tokens);
-                            param.bounds.to_tokens(tokens);
-                        }
-                    }
-                    GenericParam::Const(param) => {
-                        // Leave off the const parameter defaults
-                        tokens.append_all(param.attrs.outer());
-                        param.const_token.to_tokens(tokens);
-                        param.ident.to_tokens(tokens);
-                        param.colon_token.to_tokens(tokens);
-                        param.ty.to_tokens(tokens);
-                    }
-                }
-                param.punct().to_tokens(tokens);
-            }
-
-            TokensOrDefault(&self.0.gt_token).to_tokens(tokens);
-        }
-    }
-
-    impl<'a> ToTokens for TypeGenerics<'a> {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            if self.0.params.is_empty() {
-                return;
-            }
-
-            TokensOrDefault(&self.0.lt_token).to_tokens(tokens);
-
-            // Print lifetimes before types and consts, regardless of their
-            // order in self.params.
-            let mut trailing_or_empty = true;
-            for param in self.0.params.pairs() {
-                if let GenericParam::Lifetime(def) = *param.value() {
-                    // Leave off the lifetime bounds and attributes
-                    def.lifetime.to_tokens(tokens);
-                    param.punct().to_tokens(tokens);
-                    trailing_or_empty = param.punct().is_some();
-                }
-            }
-            for param in self.0.params.pairs() {
-                if let GenericParam::Lifetime(_) = **param.value() {
-                    continue;
-                }
-                if !trailing_or_empty {
-                    <Token![,]>::default().to_tokens(tokens);
-                    trailing_or_empty = true;
-                }
-                match param.value() {
-                    GenericParam::Lifetime(_) => unreachable!(),
-                    GenericParam::Type(param) => {
-                        // Leave off the type parameter defaults
-                        param.ident.to_tokens(tokens);
-                    }
-                    GenericParam::Const(param) => {
-                        // Leave off the const parameter defaults
-                        param.ident.to_tokens(tokens);
-                    }
-                }
-                param.punct().to_tokens(tokens);
-            }
-
-            TokensOrDefault(&self.0.gt_token).to_tokens(tokens);
-        }
-    }
-
-    impl<'a> ToTokens for Turbofish<'a> {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            if !self.0.params.is_empty() {
-                <Token![::]>::default().to_tokens(tokens);
-                TypeGenerics(self.0).to_tokens(tokens);
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for BoundLifetimes {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.for_token.to_tokens(tokens);
-            self.lt_token.to_tokens(tokens);
-            self.lifetimes.to_tokens(tokens);
-            self.gt_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for LifetimeParam {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.lifetime.to_tokens(tokens);
-            if !self.bounds.is_empty() {
-                TokensOrDefault(&self.colon_token).to_tokens(tokens);
-                self.bounds.to_tokens(tokens);
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TypeParam {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.ident.to_tokens(tokens);
-            if !self.bounds.is_empty() {
-                TokensOrDefault(&self.colon_token).to_tokens(tokens);
-                self.bounds.to_tokens(tokens);
-            }
-            if let Some(default) = &self.default {
-                TokensOrDefault(&self.eq_token).to_tokens(tokens);
-                default.to_tokens(tokens);
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TraitBound {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            let to_tokens = |tokens: &mut TokenStream| {
-                self.modifier.to_tokens(tokens);
-                self.lifetimes.to_tokens(tokens);
-                self.path.to_tokens(tokens);
-            };
-            match &self.paren_token {
-                Some(paren) => paren.surround(tokens, to_tokens),
-                None => to_tokens(tokens),
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TraitBoundModifier {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            match self {
-                TraitBoundModifier::None => {}
-                TraitBoundModifier::Maybe(t) => t.to_tokens(tokens),
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ConstParam {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.const_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.colon_token.to_tokens(tokens);
-            self.ty.to_tokens(tokens);
-            if let Some(default) = &self.default {
-                TokensOrDefault(&self.eq_token).to_tokens(tokens);
-                default.to_tokens(tokens);
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for WhereClause {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            if !self.predicates.is_empty() {
-                self.where_token.to_tokens(tokens);
-                self.predicates.to_tokens(tokens);
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for PredicateLifetime {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.lifetime.to_tokens(tokens);
-            self.colon_token.to_tokens(tokens);
-            self.bounds.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for PredicateType {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.lifetimes.to_tokens(tokens);
-            self.bounded_ty.to_tokens(tokens);
-            self.colon_token.to_tokens(tokens);
-            self.bounds.to_tokens(tokens);
-        }
-    }
-}
diff --git a/vendor/syn/src/group.rs b/vendor/syn/src/group.rs
deleted file mode 100644
index 2730233..0000000
--- a/vendor/syn/src/group.rs
+++ /dev/null
@@ -1,291 +0,0 @@
-use crate::error::Result;
-use crate::parse::ParseBuffer;
-use crate::token;
-use proc_macro2::extra::DelimSpan;
-use proc_macro2::Delimiter;
-
-// Not public API.
-#[doc(hidden)]
-pub struct Parens<'a> {
-    #[doc(hidden)]
-    pub token: token::Paren,
-    #[doc(hidden)]
-    pub content: ParseBuffer<'a>,
-}
-
-// Not public API.
-#[doc(hidden)]
-pub struct Braces<'a> {
-    #[doc(hidden)]
-    pub token: token::Brace,
-    #[doc(hidden)]
-    pub content: ParseBuffer<'a>,
-}
-
-// Not public API.
-#[doc(hidden)]
-pub struct Brackets<'a> {
-    #[doc(hidden)]
-    pub token: token::Bracket,
-    #[doc(hidden)]
-    pub content: ParseBuffer<'a>,
-}
-
-// Not public API.
-#[cfg(any(feature = "full", feature = "derive"))]
-#[doc(hidden)]
-pub struct Group<'a> {
-    #[doc(hidden)]
-    pub token: token::Group,
-    #[doc(hidden)]
-    pub content: ParseBuffer<'a>,
-}
-
-// Not public API.
-#[doc(hidden)]
-pub fn parse_parens<'a>(input: &ParseBuffer<'a>) -> Result<Parens<'a>> {
-    parse_delimited(input, Delimiter::Parenthesis).map(|(span, content)| Parens {
-        token: token::Paren(span),
-        content,
-    })
-}
-
-// Not public API.
-#[doc(hidden)]
-pub fn parse_braces<'a>(input: &ParseBuffer<'a>) -> Result<Braces<'a>> {
-    parse_delimited(input, Delimiter::Brace).map(|(span, content)| Braces {
-        token: token::Brace(span),
-        content,
-    })
-}
-
-// Not public API.
-#[doc(hidden)]
-pub fn parse_brackets<'a>(input: &ParseBuffer<'a>) -> Result<Brackets<'a>> {
-    parse_delimited(input, Delimiter::Bracket).map(|(span, content)| Brackets {
-        token: token::Bracket(span),
-        content,
-    })
-}
-
-#[cfg(any(feature = "full", feature = "derive"))]
-pub(crate) fn parse_group<'a>(input: &ParseBuffer<'a>) -> Result<Group<'a>> {
-    parse_delimited(input, Delimiter::None).map(|(span, content)| Group {
-        token: token::Group(span.join()),
-        content,
-    })
-}
-
-fn parse_delimited<'a>(
-    input: &ParseBuffer<'a>,
-    delimiter: Delimiter,
-) -> Result<(DelimSpan, ParseBuffer<'a>)> {
-    input.step(|cursor| {
-        if let Some((content, span, rest)) = cursor.group(delimiter) {
-            let scope = crate::buffer::close_span_of_group(*cursor);
-            let nested = crate::parse::advance_step_cursor(cursor, content);
-            let unexpected = crate::parse::get_unexpected(input);
-            let content = crate::parse::new_parse_buffer(scope, nested, unexpected);
-            Ok(((span, content), rest))
-        } else {
-            let message = match delimiter {
-                Delimiter::Parenthesis => "expected parentheses",
-                Delimiter::Brace => "expected curly braces",
-                Delimiter::Bracket => "expected square brackets",
-                Delimiter::None => "expected invisible group",
-            };
-            Err(cursor.error(message))
-        }
-    })
-}
-
-/// Parse a set of parentheses and expose their content to subsequent parsers.
-///
-/// # Example
-///
-/// ```
-/// # use quote::quote;
-/// #
-/// use syn::{parenthesized, token, Ident, Result, Token, Type};
-/// use syn::parse::{Parse, ParseStream};
-/// use syn::punctuated::Punctuated;
-///
-/// // Parse a simplified tuple struct syntax like:
-/// //
-/// //     struct S(A, B);
-/// struct TupleStruct {
-///     struct_token: Token![struct],
-///     ident: Ident,
-///     paren_token: token::Paren,
-///     fields: Punctuated<Type, Token![,]>,
-///     semi_token: Token![;],
-/// }
-///
-/// impl Parse for TupleStruct {
-///     fn parse(input: ParseStream) -> Result<Self> {
-///         let content;
-///         Ok(TupleStruct {
-///             struct_token: input.parse()?,
-///             ident: input.parse()?,
-///             paren_token: parenthesized!(content in input),
-///             fields: content.parse_terminated(Type::parse, Token![,])?,
-///             semi_token: input.parse()?,
-///         })
-///     }
-/// }
-/// #
-/// # fn main() {
-/// #     let input = quote! {
-/// #         struct S(A, B);
-/// #     };
-/// #     syn::parse2::<TupleStruct>(input).unwrap();
-/// # }
-/// ```
-#[macro_export]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-macro_rules! parenthesized {
-    ($content:ident in $cursor:expr) => {
-        match $crate::__private::parse_parens(&$cursor) {
-            $crate::__private::Ok(parens) => {
-                $content = parens.content;
-                parens.token
-            }
-            $crate::__private::Err(error) => {
-                return $crate::__private::Err(error);
-            }
-        }
-    };
-}
-
-/// Parse a set of curly braces and expose their content to subsequent parsers.
-///
-/// # Example
-///
-/// ```
-/// # use quote::quote;
-/// #
-/// use syn::{braced, token, Ident, Result, Token, Type};
-/// use syn::parse::{Parse, ParseStream};
-/// use syn::punctuated::Punctuated;
-///
-/// // Parse a simplified struct syntax like:
-/// //
-/// //     struct S {
-/// //         a: A,
-/// //         b: B,
-/// //     }
-/// struct Struct {
-///     struct_token: Token![struct],
-///     ident: Ident,
-///     brace_token: token::Brace,
-///     fields: Punctuated<Field, Token![,]>,
-/// }
-///
-/// struct Field {
-///     name: Ident,
-///     colon_token: Token![:],
-///     ty: Type,
-/// }
-///
-/// impl Parse for Struct {
-///     fn parse(input: ParseStream) -> Result<Self> {
-///         let content;
-///         Ok(Struct {
-///             struct_token: input.parse()?,
-///             ident: input.parse()?,
-///             brace_token: braced!(content in input),
-///             fields: content.parse_terminated(Field::parse, Token![,])?,
-///         })
-///     }
-/// }
-///
-/// impl Parse for Field {
-///     fn parse(input: ParseStream) -> Result<Self> {
-///         Ok(Field {
-///             name: input.parse()?,
-///             colon_token: input.parse()?,
-///             ty: input.parse()?,
-///         })
-///     }
-/// }
-/// #
-/// # fn main() {
-/// #     let input = quote! {
-/// #         struct S {
-/// #             a: A,
-/// #             b: B,
-/// #         }
-/// #     };
-/// #     syn::parse2::<Struct>(input).unwrap();
-/// # }
-/// ```
-#[macro_export]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-macro_rules! braced {
-    ($content:ident in $cursor:expr) => {
-        match $crate::__private::parse_braces(&$cursor) {
-            $crate::__private::Ok(braces) => {
-                $content = braces.content;
-                braces.token
-            }
-            $crate::__private::Err(error) => {
-                return $crate::__private::Err(error);
-            }
-        }
-    };
-}
-
-/// Parse a set of square brackets and expose their content to subsequent
-/// parsers.
-///
-/// # Example
-///
-/// ```
-/// # use quote::quote;
-/// #
-/// use proc_macro2::TokenStream;
-/// use syn::{bracketed, token, Result, Token};
-/// use syn::parse::{Parse, ParseStream};
-///
-/// // Parse an outer attribute like:
-/// //
-/// //     #[repr(C, packed)]
-/// struct OuterAttribute {
-///     pound_token: Token![#],
-///     bracket_token: token::Bracket,
-///     content: TokenStream,
-/// }
-///
-/// impl Parse for OuterAttribute {
-///     fn parse(input: ParseStream) -> Result<Self> {
-///         let content;
-///         Ok(OuterAttribute {
-///             pound_token: input.parse()?,
-///             bracket_token: bracketed!(content in input),
-///             content: content.parse()?,
-///         })
-///     }
-/// }
-/// #
-/// # fn main() {
-/// #     let input = quote! {
-/// #         #[repr(C, packed)]
-/// #     };
-/// #     syn::parse2::<OuterAttribute>(input).unwrap();
-/// # }
-/// ```
-#[macro_export]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-macro_rules! bracketed {
-    ($content:ident in $cursor:expr) => {
-        match $crate::__private::parse_brackets(&$cursor) {
-            $crate::__private::Ok(brackets) => {
-                $content = brackets.content;
-                brackets.token
-            }
-            $crate::__private::Err(error) => {
-                return $crate::__private::Err(error);
-            }
-        }
-    };
-}
diff --git a/vendor/syn/src/ident.rs b/vendor/syn/src/ident.rs
deleted file mode 100644
index d0f4ba0..0000000
--- a/vendor/syn/src/ident.rs
+++ /dev/null
@@ -1,107 +0,0 @@
-#[cfg(feature = "parsing")]
-use crate::lookahead;
-
-pub use proc_macro2::Ident;
-
-#[cfg(feature = "parsing")]
-pub_if_not_doc! {
-    #[doc(hidden)]
-    #[allow(non_snake_case)]
-    pub fn Ident(marker: lookahead::TokenMarker) -> Ident {
-        match marker {}
-    }
-}
-
-macro_rules! ident_from_token {
-    ($token:ident) => {
-        impl From<Token![$token]> for Ident {
-            fn from(token: Token![$token]) -> Ident {
-                Ident::new(stringify!($token), token.span)
-            }
-        }
-    };
-}
-
-ident_from_token!(self);
-ident_from_token!(Self);
-ident_from_token!(super);
-ident_from_token!(crate);
-ident_from_token!(extern);
-
-impl From<Token![_]> for Ident {
-    fn from(token: Token![_]) -> Ident {
-        Ident::new("_", token.span)
-    }
-}
-
-pub(crate) fn xid_ok(symbol: &str) -> bool {
-    let mut chars = symbol.chars();
-    let first = chars.next().unwrap();
-    if !(first == '_' || unicode_ident::is_xid_start(first)) {
-        return false;
-    }
-    for ch in chars {
-        if !unicode_ident::is_xid_continue(ch) {
-            return false;
-        }
-    }
-    true
-}
-
-#[cfg(feature = "parsing")]
-mod parsing {
-    use crate::buffer::Cursor;
-    use crate::parse::{Parse, ParseStream, Result};
-    use crate::token::Token;
-    use proc_macro2::Ident;
-
-    fn accept_as_ident(ident: &Ident) -> bool {
-        match ident.to_string().as_str() {
-            "_" |
-            // Based on https://doc.rust-lang.org/1.65.0/reference/keywords.html
-            "abstract" | "as" | "async" | "await" | "become" | "box" | "break" |
-            "const" | "continue" | "crate" | "do" | "dyn" | "else" | "enum" |
-            "extern" | "false" | "final" | "fn" | "for" | "if" | "impl" | "in" |
-            "let" | "loop" | "macro" | "match" | "mod" | "move" | "mut" |
-            "override" | "priv" | "pub" | "ref" | "return" | "Self" | "self" |
-            "static" | "struct" | "super" | "trait" | "true" | "try" | "type" |
-            "typeof" | "unsafe" | "unsized" | "use" | "virtual" | "where" |
-            "while" | "yield" => false,
-            _ => true,
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Ident {
-        fn parse(input: ParseStream) -> Result<Self> {
-            input.step(|cursor| {
-                if let Some((ident, rest)) = cursor.ident() {
-                    if accept_as_ident(&ident) {
-                        Ok((ident, rest))
-                    } else {
-                        Err(cursor.error(format_args!(
-                            "expected identifier, found keyword `{}`",
-                            ident,
-                        )))
-                    }
-                } else {
-                    Err(cursor.error("expected identifier"))
-                }
-            })
-        }
-    }
-
-    impl Token for Ident {
-        fn peek(cursor: Cursor) -> bool {
-            if let Some((ident, _rest)) = cursor.ident() {
-                accept_as_ident(&ident)
-            } else {
-                false
-            }
-        }
-
-        fn display() -> &'static str {
-            "identifier"
-        }
-    }
-}
diff --git a/vendor/syn/src/item.rs b/vendor/syn/src/item.rs
deleted file mode 100644
index 4e404e2..0000000
--- a/vendor/syn/src/item.rs
+++ /dev/null
@@ -1,3404 +0,0 @@
-use super::*;
-use crate::derive::{Data, DataEnum, DataStruct, DataUnion, DeriveInput};
-use crate::punctuated::Punctuated;
-use proc_macro2::TokenStream;
-
-#[cfg(feature = "parsing")]
-use std::mem;
-
-ast_enum_of_structs! {
-    /// Things that can appear directly inside of a module or scope.
-    ///
-    /// # Syntax tree enum
-    ///
-    /// This type is a [syntax tree enum].
-    ///
-    /// [syntax tree enum]: Expr#syntax-tree-enums
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    #[non_exhaustive]
-    pub enum Item {
-        /// A constant item: `const MAX: u16 = 65535`.
-        Const(ItemConst),
-
-        /// An enum definition: `enum Foo<A, B> { A(A), B(B) }`.
-        Enum(ItemEnum),
-
-        /// An `extern crate` item: `extern crate serde`.
-        ExternCrate(ItemExternCrate),
-
-        /// A free-standing function: `fn process(n: usize) -> Result<()> { ...
-        /// }`.
-        Fn(ItemFn),
-
-        /// A block of foreign items: `extern "C" { ... }`.
-        ForeignMod(ItemForeignMod),
-
-        /// An impl block providing trait or associated items: `impl<A> Trait
-        /// for Data<A> { ... }`.
-        Impl(ItemImpl),
-
-        /// A macro invocation, which includes `macro_rules!` definitions.
-        Macro(ItemMacro),
-
-        /// A module or module declaration: `mod m` or `mod m { ... }`.
-        Mod(ItemMod),
-
-        /// A static item: `static BIKE: Shed = Shed(42)`.
-        Static(ItemStatic),
-
-        /// A struct definition: `struct Foo<A> { x: A }`.
-        Struct(ItemStruct),
-
-        /// A trait definition: `pub trait Iterator { ... }`.
-        Trait(ItemTrait),
-
-        /// A trait alias: `pub trait SharableIterator = Iterator + Sync`.
-        TraitAlias(ItemTraitAlias),
-
-        /// A type alias: `type Result<T> = std::result::Result<T, MyError>`.
-        Type(ItemType),
-
-        /// A union definition: `union Foo<A, B> { x: A, y: B }`.
-        Union(ItemUnion),
-
-        /// A use declaration: `use std::collections::HashMap`.
-        Use(ItemUse),
-
-        /// Tokens forming an item not interpreted by Syn.
-        Verbatim(TokenStream),
-
-        // For testing exhaustiveness in downstream code, use the following idiom:
-        //
-        //     match item {
-        //         #![cfg_attr(test, deny(non_exhaustive_omitted_patterns))]
-        //
-        //         Item::Const(item) => {...}
-        //         Item::Enum(item) => {...}
-        //         ...
-        //         Item::Verbatim(item) => {...}
-        //
-        //         _ => { /* some sane fallback */ }
-        //     }
-        //
-        // This way we fail your tests but don't break your library when adding
-        // a variant. You will be notified by a test failure when a variant is
-        // added, so that you can add code to handle it, but your library will
-        // continue to compile and work for downstream users in the interim.
-    }
-}
-
-ast_struct! {
-    /// A constant item: `const MAX: u16 = 65535`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ItemConst {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub const_token: Token![const],
-        pub ident: Ident,
-        pub generics: Generics,
-        pub colon_token: Token![:],
-        pub ty: Box<Type>,
-        pub eq_token: Token![=],
-        pub expr: Box<Expr>,
-        pub semi_token: Token![;],
-    }
-}
-
-ast_struct! {
-    /// An enum definition: `enum Foo<A, B> { A(A), B(B) }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ItemEnum {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub enum_token: Token![enum],
-        pub ident: Ident,
-        pub generics: Generics,
-        pub brace_token: token::Brace,
-        pub variants: Punctuated<Variant, Token![,]>,
-    }
-}
-
-ast_struct! {
-    /// An `extern crate` item: `extern crate serde`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ItemExternCrate {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub extern_token: Token![extern],
-        pub crate_token: Token![crate],
-        pub ident: Ident,
-        pub rename: Option<(Token![as], Ident)>,
-        pub semi_token: Token![;],
-    }
-}
-
-ast_struct! {
-    /// A free-standing function: `fn process(n: usize) -> Result<()> { ... }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ItemFn {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub sig: Signature,
-        pub block: Box<Block>,
-    }
-}
-
-ast_struct! {
-    /// A block of foreign items: `extern "C" { ... }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ItemForeignMod {
-        pub attrs: Vec<Attribute>,
-        pub unsafety: Option<Token![unsafe]>,
-        pub abi: Abi,
-        pub brace_token: token::Brace,
-        pub items: Vec<ForeignItem>,
-    }
-}
-
-ast_struct! {
-    /// An impl block providing trait or associated items: `impl<A> Trait
-    /// for Data<A> { ... }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ItemImpl {
-        pub attrs: Vec<Attribute>,
-        pub defaultness: Option<Token![default]>,
-        pub unsafety: Option<Token![unsafe]>,
-        pub impl_token: Token![impl],
-        pub generics: Generics,
-        /// Trait this impl implements.
-        pub trait_: Option<(Option<Token![!]>, Path, Token![for])>,
-        /// The Self type of the impl.
-        pub self_ty: Box<Type>,
-        pub brace_token: token::Brace,
-        pub items: Vec<ImplItem>,
-    }
-}
-
-ast_struct! {
-    /// A macro invocation, which includes `macro_rules!` definitions.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ItemMacro {
-        pub attrs: Vec<Attribute>,
-        /// The `example` in `macro_rules! example { ... }`.
-        pub ident: Option<Ident>,
-        pub mac: Macro,
-        pub semi_token: Option<Token![;]>,
-    }
-}
-
-ast_struct! {
-    /// A module or module declaration: `mod m` or `mod m { ... }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ItemMod {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub unsafety: Option<Token![unsafe]>,
-        pub mod_token: Token![mod],
-        pub ident: Ident,
-        pub content: Option<(token::Brace, Vec<Item>)>,
-        pub semi: Option<Token![;]>,
-    }
-}
-
-ast_struct! {
-    /// A static item: `static BIKE: Shed = Shed(42)`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ItemStatic {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub static_token: Token![static],
-        pub mutability: StaticMutability,
-        pub ident: Ident,
-        pub colon_token: Token![:],
-        pub ty: Box<Type>,
-        pub eq_token: Token![=],
-        pub expr: Box<Expr>,
-        pub semi_token: Token![;],
-    }
-}
-
-ast_struct! {
-    /// A struct definition: `struct Foo<A> { x: A }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ItemStruct {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub struct_token: Token![struct],
-        pub ident: Ident,
-        pub generics: Generics,
-        pub fields: Fields,
-        pub semi_token: Option<Token![;]>,
-    }
-}
-
-ast_struct! {
-    /// A trait definition: `pub trait Iterator { ... }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ItemTrait {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub unsafety: Option<Token![unsafe]>,
-        pub auto_token: Option<Token![auto]>,
-        pub restriction: Option<ImplRestriction>,
-        pub trait_token: Token![trait],
-        pub ident: Ident,
-        pub generics: Generics,
-        pub colon_token: Option<Token![:]>,
-        pub supertraits: Punctuated<TypeParamBound, Token![+]>,
-        pub brace_token: token::Brace,
-        pub items: Vec<TraitItem>,
-    }
-}
-
-ast_struct! {
-    /// A trait alias: `pub trait SharableIterator = Iterator + Sync`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ItemTraitAlias {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub trait_token: Token![trait],
-        pub ident: Ident,
-        pub generics: Generics,
-        pub eq_token: Token![=],
-        pub bounds: Punctuated<TypeParamBound, Token![+]>,
-        pub semi_token: Token![;],
-    }
-}
-
-ast_struct! {
-    /// A type alias: `type Result<T> = std::result::Result<T, MyError>`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ItemType {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub type_token: Token![type],
-        pub ident: Ident,
-        pub generics: Generics,
-        pub eq_token: Token![=],
-        pub ty: Box<Type>,
-        pub semi_token: Token![;],
-    }
-}
-
-ast_struct! {
-    /// A union definition: `union Foo<A, B> { x: A, y: B }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ItemUnion {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub union_token: Token![union],
-        pub ident: Ident,
-        pub generics: Generics,
-        pub fields: FieldsNamed,
-    }
-}
-
-ast_struct! {
-    /// A use declaration: `use std::collections::HashMap`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ItemUse {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub use_token: Token![use],
-        pub leading_colon: Option<Token![::]>,
-        pub tree: UseTree,
-        pub semi_token: Token![;],
-    }
-}
-
-impl Item {
-    #[cfg(feature = "parsing")]
-    pub(crate) fn replace_attrs(&mut self, new: Vec<Attribute>) -> Vec<Attribute> {
-        match self {
-            Item::Const(ItemConst { attrs, .. })
-            | Item::Enum(ItemEnum { attrs, .. })
-            | Item::ExternCrate(ItemExternCrate { attrs, .. })
-            | Item::Fn(ItemFn { attrs, .. })
-            | Item::ForeignMod(ItemForeignMod { attrs, .. })
-            | Item::Impl(ItemImpl { attrs, .. })
-            | Item::Macro(ItemMacro { attrs, .. })
-            | Item::Mod(ItemMod { attrs, .. })
-            | Item::Static(ItemStatic { attrs, .. })
-            | Item::Struct(ItemStruct { attrs, .. })
-            | Item::Trait(ItemTrait { attrs, .. })
-            | Item::TraitAlias(ItemTraitAlias { attrs, .. })
-            | Item::Type(ItemType { attrs, .. })
-            | Item::Union(ItemUnion { attrs, .. })
-            | Item::Use(ItemUse { attrs, .. }) => mem::replace(attrs, new),
-            Item::Verbatim(_) => Vec::new(),
-        }
-    }
-}
-
-impl From<DeriveInput> for Item {
-    fn from(input: DeriveInput) -> Item {
-        match input.data {
-            Data::Struct(data) => Item::Struct(ItemStruct {
-                attrs: input.attrs,
-                vis: input.vis,
-                struct_token: data.struct_token,
-                ident: input.ident,
-                generics: input.generics,
-                fields: data.fields,
-                semi_token: data.semi_token,
-            }),
-            Data::Enum(data) => Item::Enum(ItemEnum {
-                attrs: input.attrs,
-                vis: input.vis,
-                enum_token: data.enum_token,
-                ident: input.ident,
-                generics: input.generics,
-                brace_token: data.brace_token,
-                variants: data.variants,
-            }),
-            Data::Union(data) => Item::Union(ItemUnion {
-                attrs: input.attrs,
-                vis: input.vis,
-                union_token: data.union_token,
-                ident: input.ident,
-                generics: input.generics,
-                fields: data.fields,
-            }),
-        }
-    }
-}
-
-impl From<ItemStruct> for DeriveInput {
-    fn from(input: ItemStruct) -> DeriveInput {
-        DeriveInput {
-            attrs: input.attrs,
-            vis: input.vis,
-            ident: input.ident,
-            generics: input.generics,
-            data: Data::Struct(DataStruct {
-                struct_token: input.struct_token,
-                fields: input.fields,
-                semi_token: input.semi_token,
-            }),
-        }
-    }
-}
-
-impl From<ItemEnum> for DeriveInput {
-    fn from(input: ItemEnum) -> DeriveInput {
-        DeriveInput {
-            attrs: input.attrs,
-            vis: input.vis,
-            ident: input.ident,
-            generics: input.generics,
-            data: Data::Enum(DataEnum {
-                enum_token: input.enum_token,
-                brace_token: input.brace_token,
-                variants: input.variants,
-            }),
-        }
-    }
-}
-
-impl From<ItemUnion> for DeriveInput {
-    fn from(input: ItemUnion) -> DeriveInput {
-        DeriveInput {
-            attrs: input.attrs,
-            vis: input.vis,
-            ident: input.ident,
-            generics: input.generics,
-            data: Data::Union(DataUnion {
-                union_token: input.union_token,
-                fields: input.fields,
-            }),
-        }
-    }
-}
-
-ast_enum_of_structs! {
-    /// A suffix of an import tree in a `use` item: `Type as Renamed` or `*`.
-    ///
-    /// # Syntax tree enum
-    ///
-    /// This type is a [syntax tree enum].
-    ///
-    /// [syntax tree enum]: Expr#syntax-tree-enums
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub enum UseTree {
-        /// A path prefix of imports in a `use` item: `std::...`.
-        Path(UsePath),
-
-        /// An identifier imported by a `use` item: `HashMap`.
-        Name(UseName),
-
-        /// An renamed identifier imported by a `use` item: `HashMap as Map`.
-        Rename(UseRename),
-
-        /// A glob import in a `use` item: `*`.
-        Glob(UseGlob),
-
-        /// A braced group of imports in a `use` item: `{A, B, C}`.
-        Group(UseGroup),
-    }
-}
-
-ast_struct! {
-    /// A path prefix of imports in a `use` item: `std::...`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct UsePath {
-        pub ident: Ident,
-        pub colon2_token: Token![::],
-        pub tree: Box<UseTree>,
-    }
-}
-
-ast_struct! {
-    /// An identifier imported by a `use` item: `HashMap`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct UseName {
-        pub ident: Ident,
-    }
-}
-
-ast_struct! {
-    /// An renamed identifier imported by a `use` item: `HashMap as Map`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct UseRename {
-        pub ident: Ident,
-        pub as_token: Token![as],
-        pub rename: Ident,
-    }
-}
-
-ast_struct! {
-    /// A glob import in a `use` item: `*`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct UseGlob {
-        pub star_token: Token![*],
-    }
-}
-
-ast_struct! {
-    /// A braced group of imports in a `use` item: `{A, B, C}`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct UseGroup {
-        pub brace_token: token::Brace,
-        pub items: Punctuated<UseTree, Token![,]>,
-    }
-}
-
-ast_enum_of_structs! {
-    /// An item within an `extern` block.
-    ///
-    /// # Syntax tree enum
-    ///
-    /// This type is a [syntax tree enum].
-    ///
-    /// [syntax tree enum]: Expr#syntax-tree-enums
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    #[non_exhaustive]
-    pub enum ForeignItem {
-        /// A foreign function in an `extern` block.
-        Fn(ForeignItemFn),
-
-        /// A foreign static item in an `extern` block: `static ext: u8`.
-        Static(ForeignItemStatic),
-
-        /// A foreign type in an `extern` block: `type void`.
-        Type(ForeignItemType),
-
-        /// A macro invocation within an extern block.
-        Macro(ForeignItemMacro),
-
-        /// Tokens in an `extern` block not interpreted by Syn.
-        Verbatim(TokenStream),
-
-        // For testing exhaustiveness in downstream code, use the following idiom:
-        //
-        //     match item {
-        //         #![cfg_attr(test, deny(non_exhaustive_omitted_patterns))]
-        //
-        //         ForeignItem::Fn(item) => {...}
-        //         ForeignItem::Static(item) => {...}
-        //         ...
-        //         ForeignItem::Verbatim(item) => {...}
-        //
-        //         _ => { /* some sane fallback */ }
-        //     }
-        //
-        // This way we fail your tests but don't break your library when adding
-        // a variant. You will be notified by a test failure when a variant is
-        // added, so that you can add code to handle it, but your library will
-        // continue to compile and work for downstream users in the interim.
-    }
-}
-
-ast_struct! {
-    /// A foreign function in an `extern` block.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ForeignItemFn {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub sig: Signature,
-        pub semi_token: Token![;],
-    }
-}
-
-ast_struct! {
-    /// A foreign static item in an `extern` block: `static ext: u8`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ForeignItemStatic {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub static_token: Token![static],
-        pub mutability: StaticMutability,
-        pub ident: Ident,
-        pub colon_token: Token![:],
-        pub ty: Box<Type>,
-        pub semi_token: Token![;],
-    }
-}
-
-ast_struct! {
-    /// A foreign type in an `extern` block: `type void`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ForeignItemType {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub type_token: Token![type],
-        pub ident: Ident,
-        pub generics: Generics,
-        pub semi_token: Token![;],
-    }
-}
-
-ast_struct! {
-    /// A macro invocation within an extern block.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ForeignItemMacro {
-        pub attrs: Vec<Attribute>,
-        pub mac: Macro,
-        pub semi_token: Option<Token![;]>,
-    }
-}
-
-ast_enum_of_structs! {
-    /// An item declaration within the definition of a trait.
-    ///
-    /// # Syntax tree enum
-    ///
-    /// This type is a [syntax tree enum].
-    ///
-    /// [syntax tree enum]: Expr#syntax-tree-enums
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    #[non_exhaustive]
-    pub enum TraitItem {
-        /// An associated constant within the definition of a trait.
-        Const(TraitItemConst),
-
-        /// An associated function within the definition of a trait.
-        Fn(TraitItemFn),
-
-        /// An associated type within the definition of a trait.
-        Type(TraitItemType),
-
-        /// A macro invocation within the definition of a trait.
-        Macro(TraitItemMacro),
-
-        /// Tokens within the definition of a trait not interpreted by Syn.
-        Verbatim(TokenStream),
-
-        // For testing exhaustiveness in downstream code, use the following idiom:
-        //
-        //     match item {
-        //         #![cfg_attr(test, deny(non_exhaustive_omitted_patterns))]
-        //
-        //         TraitItem::Const(item) => {...}
-        //         TraitItem::Fn(item) => {...}
-        //         ...
-        //         TraitItem::Verbatim(item) => {...}
-        //
-        //         _ => { /* some sane fallback */ }
-        //     }
-        //
-        // This way we fail your tests but don't break your library when adding
-        // a variant. You will be notified by a test failure when a variant is
-        // added, so that you can add code to handle it, but your library will
-        // continue to compile and work for downstream users in the interim.
-    }
-}
-
-ast_struct! {
-    /// An associated constant within the definition of a trait.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct TraitItemConst {
-        pub attrs: Vec<Attribute>,
-        pub const_token: Token![const],
-        pub ident: Ident,
-        pub generics: Generics,
-        pub colon_token: Token![:],
-        pub ty: Type,
-        pub default: Option<(Token![=], Expr)>,
-        pub semi_token: Token![;],
-    }
-}
-
-ast_struct! {
-    /// An associated function within the definition of a trait.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct TraitItemFn {
-        pub attrs: Vec<Attribute>,
-        pub sig: Signature,
-        pub default: Option<Block>,
-        pub semi_token: Option<Token![;]>,
-    }
-}
-
-ast_struct! {
-    /// An associated type within the definition of a trait.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct TraitItemType {
-        pub attrs: Vec<Attribute>,
-        pub type_token: Token![type],
-        pub ident: Ident,
-        pub generics: Generics,
-        pub colon_token: Option<Token![:]>,
-        pub bounds: Punctuated<TypeParamBound, Token![+]>,
-        pub default: Option<(Token![=], Type)>,
-        pub semi_token: Token![;],
-    }
-}
-
-ast_struct! {
-    /// A macro invocation within the definition of a trait.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct TraitItemMacro {
-        pub attrs: Vec<Attribute>,
-        pub mac: Macro,
-        pub semi_token: Option<Token![;]>,
-    }
-}
-
-ast_enum_of_structs! {
-    /// An item within an impl block.
-    ///
-    /// # Syntax tree enum
-    ///
-    /// This type is a [syntax tree enum].
-    ///
-    /// [syntax tree enum]: Expr#syntax-tree-enums
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    #[non_exhaustive]
-    pub enum ImplItem {
-        /// An associated constant within an impl block.
-        Const(ImplItemConst),
-
-        /// An associated function within an impl block.
-        Fn(ImplItemFn),
-
-        /// An associated type within an impl block.
-        Type(ImplItemType),
-
-        /// A macro invocation within an impl block.
-        Macro(ImplItemMacro),
-
-        /// Tokens within an impl block not interpreted by Syn.
-        Verbatim(TokenStream),
-
-        // For testing exhaustiveness in downstream code, use the following idiom:
-        //
-        //     match item {
-        //         #![cfg_attr(test, deny(non_exhaustive_omitted_patterns))]
-        //
-        //         ImplItem::Const(item) => {...}
-        //         ImplItem::Fn(item) => {...}
-        //         ...
-        //         ImplItem::Verbatim(item) => {...}
-        //
-        //         _ => { /* some sane fallback */ }
-        //     }
-        //
-        // This way we fail your tests but don't break your library when adding
-        // a variant. You will be notified by a test failure when a variant is
-        // added, so that you can add code to handle it, but your library will
-        // continue to compile and work for downstream users in the interim.
-    }
-}
-
-ast_struct! {
-    /// An associated constant within an impl block.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ImplItemConst {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub defaultness: Option<Token![default]>,
-        pub const_token: Token![const],
-        pub ident: Ident,
-        pub generics: Generics,
-        pub colon_token: Token![:],
-        pub ty: Type,
-        pub eq_token: Token![=],
-        pub expr: Expr,
-        pub semi_token: Token![;],
-    }
-}
-
-ast_struct! {
-    /// An associated function within an impl block.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ImplItemFn {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub defaultness: Option<Token![default]>,
-        pub sig: Signature,
-        pub block: Block,
-    }
-}
-
-ast_struct! {
-    /// An associated type within an impl block.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ImplItemType {
-        pub attrs: Vec<Attribute>,
-        pub vis: Visibility,
-        pub defaultness: Option<Token![default]>,
-        pub type_token: Token![type],
-        pub ident: Ident,
-        pub generics: Generics,
-        pub eq_token: Token![=],
-        pub ty: Type,
-        pub semi_token: Token![;],
-    }
-}
-
-ast_struct! {
-    /// A macro invocation within an impl block.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct ImplItemMacro {
-        pub attrs: Vec<Attribute>,
-        pub mac: Macro,
-        pub semi_token: Option<Token![;]>,
-    }
-}
-
-ast_struct! {
-    /// A function signature in a trait or implementation: `unsafe fn
-    /// initialize(&self)`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct Signature {
-        pub constness: Option<Token![const]>,
-        pub asyncness: Option<Token![async]>,
-        pub unsafety: Option<Token![unsafe]>,
-        pub abi: Option<Abi>,
-        pub fn_token: Token![fn],
-        pub ident: Ident,
-        pub generics: Generics,
-        pub paren_token: token::Paren,
-        pub inputs: Punctuated<FnArg, Token![,]>,
-        pub variadic: Option<Variadic>,
-        pub output: ReturnType,
-    }
-}
-
-impl Signature {
-    /// A method's `self` receiver, such as `&self` or `self: Box<Self>`.
-    pub fn receiver(&self) -> Option<&Receiver> {
-        let arg = self.inputs.first()?;
-        match arg {
-            FnArg::Receiver(receiver) => Some(receiver),
-            FnArg::Typed(_) => None,
-        }
-    }
-}
-
-ast_enum_of_structs! {
-    /// An argument in a function signature: the `n: usize` in `fn f(n: usize)`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub enum FnArg {
-        /// The `self` argument of an associated method.
-        Receiver(Receiver),
-
-        /// A function argument accepted by pattern and type.
-        Typed(PatType),
-    }
-}
-
-ast_struct! {
-    /// The `self` argument of an associated method.
-    ///
-    /// If `colon_token` is present, the receiver is written with an explicit
-    /// type such as `self: Box<Self>`. If `colon_token` is absent, the receiver
-    /// is written in shorthand such as `self` or `&self` or `&mut self`. In the
-    /// shorthand case, the type in `ty` is reconstructed as one of `Self`,
-    /// `&Self`, or `&mut Self`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct Receiver {
-        pub attrs: Vec<Attribute>,
-        pub reference: Option<(Token![&], Option<Lifetime>)>,
-        pub mutability: Option<Token![mut]>,
-        pub self_token: Token![self],
-        pub colon_token: Option<Token![:]>,
-        pub ty: Box<Type>,
-    }
-}
-
-impl Receiver {
-    pub fn lifetime(&self) -> Option<&Lifetime> {
-        self.reference.as_ref()?.1.as_ref()
-    }
-}
-
-ast_struct! {
-    /// The variadic argument of a foreign function.
-    ///
-    /// ```rust
-    /// # struct c_char;
-    /// # struct c_int;
-    /// #
-    /// extern "C" {
-    ///     fn printf(format: *const c_char, ...) -> c_int;
-    ///     //                               ^^^
-    /// }
-    /// ```
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct Variadic {
-        pub attrs: Vec<Attribute>,
-        pub pat: Option<(Box<Pat>, Token![:])>,
-        pub dots: Token![...],
-        pub comma: Option<Token![,]>,
-    }
-}
-
-ast_enum! {
-    /// The mutability of an `Item::Static` or `ForeignItem::Static`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    #[non_exhaustive]
-    pub enum StaticMutability {
-        Mut(Token![mut]),
-        None,
-    }
-}
-
-ast_enum! {
-    /// Unused, but reserved for RFC 3323 restrictions.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    #[non_exhaustive]
-    pub enum ImplRestriction {}
-
-
-    // TODO: https://rust-lang.github.io/rfcs/3323-restrictions.html
-    //
-    // pub struct ImplRestriction {
-    //     pub impl_token: Token![impl],
-    //     pub paren_token: token::Paren,
-    //     pub in_token: Option<Token![in]>,
-    //     pub path: Box<Path>,
-    // }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::*;
-    use crate::ext::IdentExt as _;
-    use crate::parse::discouraged::Speculative as _;
-    use crate::parse::{Parse, ParseBuffer, ParseStream, Result};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Item {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let begin = input.fork();
-            let attrs = input.call(Attribute::parse_outer)?;
-            parse_rest_of_item(begin, attrs, input)
-        }
-    }
-
-    pub(crate) fn parse_rest_of_item(
-        begin: ParseBuffer,
-        mut attrs: Vec<Attribute>,
-        input: ParseStream,
-    ) -> Result<Item> {
-        let ahead = input.fork();
-        let vis: Visibility = ahead.parse()?;
-
-        let lookahead = ahead.lookahead1();
-        let mut item = if lookahead.peek(Token![fn]) || peek_signature(&ahead) {
-            let vis: Visibility = input.parse()?;
-            let sig: Signature = input.parse()?;
-            if input.peek(Token![;]) {
-                input.parse::<Token![;]>()?;
-                Ok(Item::Verbatim(verbatim::between(&begin, input)))
-            } else {
-                parse_rest_of_fn(input, Vec::new(), vis, sig).map(Item::Fn)
-            }
-        } else if lookahead.peek(Token![extern]) {
-            ahead.parse::<Token![extern]>()?;
-            let lookahead = ahead.lookahead1();
-            if lookahead.peek(Token![crate]) {
-                input.parse().map(Item::ExternCrate)
-            } else if lookahead.peek(token::Brace) {
-                input.parse().map(Item::ForeignMod)
-            } else if lookahead.peek(LitStr) {
-                ahead.parse::<LitStr>()?;
-                let lookahead = ahead.lookahead1();
-                if lookahead.peek(token::Brace) {
-                    input.parse().map(Item::ForeignMod)
-                } else {
-                    Err(lookahead.error())
-                }
-            } else {
-                Err(lookahead.error())
-            }
-        } else if lookahead.peek(Token![use]) {
-            let allow_crate_root_in_path = true;
-            match parse_item_use(input, allow_crate_root_in_path)? {
-                Some(item_use) => Ok(Item::Use(item_use)),
-                None => Ok(Item::Verbatim(verbatim::between(&begin, input))),
-            }
-        } else if lookahead.peek(Token![static]) {
-            let vis = input.parse()?;
-            let static_token = input.parse()?;
-            let mutability = input.parse()?;
-            let ident = input.parse()?;
-            if input.peek(Token![=]) {
-                input.parse::<Token![=]>()?;
-                input.parse::<Expr>()?;
-                input.parse::<Token![;]>()?;
-                Ok(Item::Verbatim(verbatim::between(&begin, input)))
-            } else {
-                let colon_token = input.parse()?;
-                let ty = input.parse()?;
-                if input.peek(Token![;]) {
-                    input.parse::<Token![;]>()?;
-                    Ok(Item::Verbatim(verbatim::between(&begin, input)))
-                } else {
-                    Ok(Item::Static(ItemStatic {
-                        attrs: Vec::new(),
-                        vis,
-                        static_token,
-                        mutability,
-                        ident,
-                        colon_token,
-                        ty,
-                        eq_token: input.parse()?,
-                        expr: input.parse()?,
-                        semi_token: input.parse()?,
-                    }))
-                }
-            }
-        } else if lookahead.peek(Token![const]) {
-            let vis = input.parse()?;
-            let const_token: Token![const] = input.parse()?;
-            let lookahead = input.lookahead1();
-            let ident = if lookahead.peek(Ident) || lookahead.peek(Token![_]) {
-                input.call(Ident::parse_any)?
-            } else {
-                return Err(lookahead.error());
-            };
-            let mut generics: Generics = input.parse()?;
-            let colon_token = input.parse()?;
-            let ty = input.parse()?;
-            let value = if let Some(eq_token) = input.parse::<Option<Token![=]>>()? {
-                let expr: Expr = input.parse()?;
-                Some((eq_token, expr))
-            } else {
-                None
-            };
-            generics.where_clause = input.parse()?;
-            let semi_token: Token![;] = input.parse()?;
-            match value {
-                Some((eq_token, expr))
-                    if generics.lt_token.is_none() && generics.where_clause.is_none() =>
-                {
-                    Ok(Item::Const(ItemConst {
-                        attrs: Vec::new(),
-                        vis,
-                        const_token,
-                        ident,
-                        generics,
-                        colon_token,
-                        ty,
-                        eq_token,
-                        expr: Box::new(expr),
-                        semi_token,
-                    }))
-                }
-                _ => Ok(Item::Verbatim(verbatim::between(&begin, input))),
-            }
-        } else if lookahead.peek(Token![unsafe]) {
-            ahead.parse::<Token![unsafe]>()?;
-            let lookahead = ahead.lookahead1();
-            if lookahead.peek(Token![trait])
-                || lookahead.peek(Token![auto]) && ahead.peek2(Token![trait])
-            {
-                input.parse().map(Item::Trait)
-            } else if lookahead.peek(Token![impl]) {
-                let allow_verbatim_impl = true;
-                if let Some(item) = parse_impl(input, allow_verbatim_impl)? {
-                    Ok(Item::Impl(item))
-                } else {
-                    Ok(Item::Verbatim(verbatim::between(&begin, input)))
-                }
-            } else if lookahead.peek(Token![extern]) {
-                input.parse().map(Item::ForeignMod)
-            } else if lookahead.peek(Token![mod]) {
-                input.parse().map(Item::Mod)
-            } else {
-                Err(lookahead.error())
-            }
-        } else if lookahead.peek(Token![mod]) {
-            input.parse().map(Item::Mod)
-        } else if lookahead.peek(Token![type]) {
-            parse_item_type(begin, input)
-        } else if lookahead.peek(Token![struct]) {
-            input.parse().map(Item::Struct)
-        } else if lookahead.peek(Token![enum]) {
-            input.parse().map(Item::Enum)
-        } else if lookahead.peek(Token![union]) && ahead.peek2(Ident) {
-            input.parse().map(Item::Union)
-        } else if lookahead.peek(Token![trait]) {
-            input.call(parse_trait_or_trait_alias)
-        } else if lookahead.peek(Token![auto]) && ahead.peek2(Token![trait]) {
-            input.parse().map(Item::Trait)
-        } else if lookahead.peek(Token![impl])
-            || lookahead.peek(Token![default]) && !ahead.peek2(Token![!])
-        {
-            let allow_verbatim_impl = true;
-            if let Some(item) = parse_impl(input, allow_verbatim_impl)? {
-                Ok(Item::Impl(item))
-            } else {
-                Ok(Item::Verbatim(verbatim::between(&begin, input)))
-            }
-        } else if lookahead.peek(Token![macro]) {
-            input.advance_to(&ahead);
-            parse_macro2(begin, vis, input)
-        } else if vis.is_inherited()
-            && (lookahead.peek(Ident)
-                || lookahead.peek(Token![self])
-                || lookahead.peek(Token![super])
-                || lookahead.peek(Token![crate])
-                || lookahead.peek(Token![::]))
-        {
-            input.parse().map(Item::Macro)
-        } else {
-            Err(lookahead.error())
-        }?;
-
-        attrs.extend(item.replace_attrs(Vec::new()));
-        item.replace_attrs(attrs);
-        Ok(item)
-    }
-
-    struct FlexibleItemType {
-        vis: Visibility,
-        defaultness: Option<Token![default]>,
-        type_token: Token![type],
-        ident: Ident,
-        generics: Generics,
-        colon_token: Option<Token![:]>,
-        bounds: Punctuated<TypeParamBound, Token![+]>,
-        ty: Option<(Token![=], Type)>,
-        semi_token: Token![;],
-    }
-
-    enum TypeDefaultness {
-        Optional,
-        Disallowed,
-    }
-
-    enum WhereClauseLocation {
-        // type Ty<T> where T: 'static = T;
-        BeforeEq,
-        // type Ty<T> = T where T: 'static;
-        AfterEq,
-        // TODO: goes away once the migration period on rust-lang/rust#89122 is over
-        Both,
-    }
-
-    impl FlexibleItemType {
-        fn parse(
-            input: ParseStream,
-            allow_defaultness: TypeDefaultness,
-            where_clause_location: WhereClauseLocation,
-        ) -> Result<Self> {
-            let vis: Visibility = input.parse()?;
-            let defaultness: Option<Token![default]> = match allow_defaultness {
-                TypeDefaultness::Optional => input.parse()?,
-                TypeDefaultness::Disallowed => None,
-            };
-            let type_token: Token![type] = input.parse()?;
-            let ident: Ident = input.parse()?;
-            let mut generics: Generics = input.parse()?;
-            let (colon_token, bounds) = Self::parse_optional_bounds(input)?;
-
-            match where_clause_location {
-                WhereClauseLocation::BeforeEq | WhereClauseLocation::Both => {
-                    generics.where_clause = input.parse()?;
-                }
-                WhereClauseLocation::AfterEq => {}
-            }
-
-            let ty = Self::parse_optional_definition(input)?;
-
-            match where_clause_location {
-                WhereClauseLocation::AfterEq | WhereClauseLocation::Both
-                    if generics.where_clause.is_none() =>
-                {
-                    generics.where_clause = input.parse()?;
-                }
-                _ => {}
-            }
-
-            let semi_token: Token![;] = input.parse()?;
-
-            Ok(FlexibleItemType {
-                vis,
-                defaultness,
-                type_token,
-                ident,
-                generics,
-                colon_token,
-                bounds,
-                ty,
-                semi_token,
-            })
-        }
-
-        fn parse_optional_bounds(
-            input: ParseStream,
-        ) -> Result<(Option<Token![:]>, Punctuated<TypeParamBound, Token![+]>)> {
-            let colon_token: Option<Token![:]> = input.parse()?;
-
-            let mut bounds = Punctuated::new();
-            if colon_token.is_some() {
-                loop {
-                    if input.peek(Token![where]) || input.peek(Token![=]) || input.peek(Token![;]) {
-                        break;
-                    }
-                    bounds.push_value(input.parse::<TypeParamBound>()?);
-                    if input.peek(Token![where]) || input.peek(Token![=]) || input.peek(Token![;]) {
-                        break;
-                    }
-                    bounds.push_punct(input.parse::<Token![+]>()?);
-                }
-            }
-
-            Ok((colon_token, bounds))
-        }
-
-        fn parse_optional_definition(input: ParseStream) -> Result<Option<(Token![=], Type)>> {
-            let eq_token: Option<Token![=]> = input.parse()?;
-            if let Some(eq_token) = eq_token {
-                let definition: Type = input.parse()?;
-                Ok(Some((eq_token, definition)))
-            } else {
-                Ok(None)
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ItemMacro {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let path = input.call(Path::parse_mod_style)?;
-            let bang_token: Token![!] = input.parse()?;
-            let ident: Option<Ident> = if input.peek(Token![try]) {
-                input.call(Ident::parse_any).map(Some)
-            } else {
-                input.parse()
-            }?;
-            let (delimiter, tokens) = input.call(mac::parse_delimiter)?;
-            let semi_token: Option<Token![;]> = if !delimiter.is_brace() {
-                Some(input.parse()?)
-            } else {
-                None
-            };
-            Ok(ItemMacro {
-                attrs,
-                ident,
-                mac: Macro {
-                    path,
-                    bang_token,
-                    delimiter,
-                    tokens,
-                },
-                semi_token,
-            })
-        }
-    }
-
-    fn parse_macro2(begin: ParseBuffer, _vis: Visibility, input: ParseStream) -> Result<Item> {
-        input.parse::<Token![macro]>()?;
-        input.parse::<Ident>()?;
-
-        let mut lookahead = input.lookahead1();
-        if lookahead.peek(token::Paren) {
-            let paren_content;
-            parenthesized!(paren_content in input);
-            paren_content.parse::<TokenStream>()?;
-            lookahead = input.lookahead1();
-        }
-
-        if lookahead.peek(token::Brace) {
-            let brace_content;
-            braced!(brace_content in input);
-            brace_content.parse::<TokenStream>()?;
-        } else {
-            return Err(lookahead.error());
-        }
-
-        Ok(Item::Verbatim(verbatim::between(&begin, input)))
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ItemExternCrate {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(ItemExternCrate {
-                attrs: input.call(Attribute::parse_outer)?,
-                vis: input.parse()?,
-                extern_token: input.parse()?,
-                crate_token: input.parse()?,
-                ident: {
-                    if input.peek(Token![self]) {
-                        input.call(Ident::parse_any)?
-                    } else {
-                        input.parse()?
-                    }
-                },
-                rename: {
-                    if input.peek(Token![as]) {
-                        let as_token: Token![as] = input.parse()?;
-                        let rename: Ident = if input.peek(Token![_]) {
-                            Ident::from(input.parse::<Token![_]>()?)
-                        } else {
-                            input.parse()?
-                        };
-                        Some((as_token, rename))
-                    } else {
-                        None
-                    }
-                },
-                semi_token: input.parse()?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ItemUse {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let allow_crate_root_in_path = false;
-            parse_item_use(input, allow_crate_root_in_path).map(Option::unwrap)
-        }
-    }
-
-    fn parse_item_use(
-        input: ParseStream,
-        allow_crate_root_in_path: bool,
-    ) -> Result<Option<ItemUse>> {
-        let attrs = input.call(Attribute::parse_outer)?;
-        let vis: Visibility = input.parse()?;
-        let use_token: Token![use] = input.parse()?;
-        let leading_colon: Option<Token![::]> = input.parse()?;
-        let tree = parse_use_tree(input, allow_crate_root_in_path && leading_colon.is_none())?;
-        let semi_token: Token![;] = input.parse()?;
-
-        let tree = match tree {
-            Some(tree) => tree,
-            None => return Ok(None),
-        };
-
-        Ok(Some(ItemUse {
-            attrs,
-            vis,
-            use_token,
-            leading_colon,
-            tree,
-            semi_token,
-        }))
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for UseTree {
-        fn parse(input: ParseStream) -> Result<UseTree> {
-            let allow_crate_root_in_path = false;
-            parse_use_tree(input, allow_crate_root_in_path).map(Option::unwrap)
-        }
-    }
-
-    fn parse_use_tree(
-        input: ParseStream,
-        allow_crate_root_in_path: bool,
-    ) -> Result<Option<UseTree>> {
-        let lookahead = input.lookahead1();
-        if lookahead.peek(Ident)
-            || lookahead.peek(Token![self])
-            || lookahead.peek(Token![super])
-            || lookahead.peek(Token![crate])
-            || lookahead.peek(Token![try])
-        {
-            let ident = input.call(Ident::parse_any)?;
-            if input.peek(Token![::]) {
-                Ok(Some(UseTree::Path(UsePath {
-                    ident,
-                    colon2_token: input.parse()?,
-                    tree: Box::new(input.parse()?),
-                })))
-            } else if input.peek(Token![as]) {
-                Ok(Some(UseTree::Rename(UseRename {
-                    ident,
-                    as_token: input.parse()?,
-                    rename: {
-                        if input.peek(Ident) {
-                            input.parse()?
-                        } else if input.peek(Token![_]) {
-                            Ident::from(input.parse::<Token![_]>()?)
-                        } else {
-                            return Err(input.error("expected identifier or underscore"));
-                        }
-                    },
-                })))
-            } else {
-                Ok(Some(UseTree::Name(UseName { ident })))
-            }
-        } else if lookahead.peek(Token![*]) {
-            Ok(Some(UseTree::Glob(UseGlob {
-                star_token: input.parse()?,
-            })))
-        } else if lookahead.peek(token::Brace) {
-            let content;
-            let brace_token = braced!(content in input);
-            let mut items = Punctuated::new();
-            let mut has_any_crate_root_in_path = false;
-            loop {
-                if content.is_empty() {
-                    break;
-                }
-                let this_tree_starts_with_crate_root =
-                    allow_crate_root_in_path && content.parse::<Option<Token![::]>>()?.is_some();
-                has_any_crate_root_in_path |= this_tree_starts_with_crate_root;
-                match parse_use_tree(
-                    &content,
-                    allow_crate_root_in_path && !this_tree_starts_with_crate_root,
-                )? {
-                    Some(tree) => items.push_value(tree),
-                    None => has_any_crate_root_in_path = true,
-                }
-                if content.is_empty() {
-                    break;
-                }
-                let comma: Token![,] = content.parse()?;
-                items.push_punct(comma);
-            }
-            if has_any_crate_root_in_path {
-                Ok(None)
-            } else {
-                Ok(Some(UseTree::Group(UseGroup { brace_token, items })))
-            }
-        } else {
-            Err(lookahead.error())
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ItemStatic {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(ItemStatic {
-                attrs: input.call(Attribute::parse_outer)?,
-                vis: input.parse()?,
-                static_token: input.parse()?,
-                mutability: input.parse()?,
-                ident: input.parse()?,
-                colon_token: input.parse()?,
-                ty: input.parse()?,
-                eq_token: input.parse()?,
-                expr: input.parse()?,
-                semi_token: input.parse()?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ItemConst {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let vis: Visibility = input.parse()?;
-            let const_token: Token![const] = input.parse()?;
-
-            let lookahead = input.lookahead1();
-            let ident = if lookahead.peek(Ident) || lookahead.peek(Token![_]) {
-                input.call(Ident::parse_any)?
-            } else {
-                return Err(lookahead.error());
-            };
-
-            let colon_token: Token![:] = input.parse()?;
-            let ty: Type = input.parse()?;
-            let eq_token: Token![=] = input.parse()?;
-            let expr: Expr = input.parse()?;
-            let semi_token: Token![;] = input.parse()?;
-
-            Ok(ItemConst {
-                attrs,
-                vis,
-                const_token,
-                ident,
-                generics: Generics::default(),
-                colon_token,
-                ty: Box::new(ty),
-                eq_token,
-                expr: Box::new(expr),
-                semi_token,
-            })
-        }
-    }
-
-    fn peek_signature(input: ParseStream) -> bool {
-        let fork = input.fork();
-        fork.parse::<Option<Token![const]>>().is_ok()
-            && fork.parse::<Option<Token![async]>>().is_ok()
-            && fork.parse::<Option<Token![unsafe]>>().is_ok()
-            && fork.parse::<Option<Abi>>().is_ok()
-            && fork.peek(Token![fn])
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Signature {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let constness: Option<Token![const]> = input.parse()?;
-            let asyncness: Option<Token![async]> = input.parse()?;
-            let unsafety: Option<Token![unsafe]> = input.parse()?;
-            let abi: Option<Abi> = input.parse()?;
-            let fn_token: Token![fn] = input.parse()?;
-            let ident: Ident = input.parse()?;
-            let mut generics: Generics = input.parse()?;
-
-            let content;
-            let paren_token = parenthesized!(content in input);
-            let (inputs, variadic) = parse_fn_args(&content)?;
-
-            let output: ReturnType = input.parse()?;
-            generics.where_clause = input.parse()?;
-
-            Ok(Signature {
-                constness,
-                asyncness,
-                unsafety,
-                abi,
-                fn_token,
-                ident,
-                generics,
-                paren_token,
-                inputs,
-                variadic,
-                output,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ItemFn {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let outer_attrs = input.call(Attribute::parse_outer)?;
-            let vis: Visibility = input.parse()?;
-            let sig: Signature = input.parse()?;
-            parse_rest_of_fn(input, outer_attrs, vis, sig)
-        }
-    }
-
-    fn parse_rest_of_fn(
-        input: ParseStream,
-        mut attrs: Vec<Attribute>,
-        vis: Visibility,
-        sig: Signature,
-    ) -> Result<ItemFn> {
-        let content;
-        let brace_token = braced!(content in input);
-        attr::parsing::parse_inner(&content, &mut attrs)?;
-        let stmts = content.call(Block::parse_within)?;
-
-        Ok(ItemFn {
-            attrs,
-            vis,
-            sig,
-            block: Box::new(Block { brace_token, stmts }),
-        })
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for FnArg {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let allow_variadic = false;
-            let attrs = input.call(Attribute::parse_outer)?;
-            match parse_fn_arg_or_variadic(input, attrs, allow_variadic)? {
-                FnArgOrVariadic::FnArg(arg) => Ok(arg),
-                FnArgOrVariadic::Variadic(_) => unreachable!(),
-            }
-        }
-    }
-
-    enum FnArgOrVariadic {
-        FnArg(FnArg),
-        Variadic(Variadic),
-    }
-
-    fn parse_fn_arg_or_variadic(
-        input: ParseStream,
-        attrs: Vec<Attribute>,
-        allow_variadic: bool,
-    ) -> Result<FnArgOrVariadic> {
-        let ahead = input.fork();
-        if let Ok(mut receiver) = ahead.parse::<Receiver>() {
-            input.advance_to(&ahead);
-            receiver.attrs = attrs;
-            return Ok(FnArgOrVariadic::FnArg(FnArg::Receiver(receiver)));
-        }
-
-        // Hack to parse pre-2018 syntax in
-        // test/ui/rfc-2565-param-attrs/param-attrs-pretty.rs
-        // because the rest of the test case is valuable.
-        if input.peek(Ident) && input.peek2(Token![<]) {
-            let span = input.fork().parse::<Ident>()?.span();
-            return Ok(FnArgOrVariadic::FnArg(FnArg::Typed(PatType {
-                attrs,
-                pat: Box::new(Pat::Wild(PatWild {
-                    attrs: Vec::new(),
-                    underscore_token: Token![_](span),
-                })),
-                colon_token: Token![:](span),
-                ty: input.parse()?,
-            })));
-        }
-
-        let pat = Box::new(Pat::parse_single(input)?);
-        let colon_token: Token![:] = input.parse()?;
-
-        if allow_variadic {
-            if let Some(dots) = input.parse::<Option<Token![...]>>()? {
-                return Ok(FnArgOrVariadic::Variadic(Variadic {
-                    attrs,
-                    pat: Some((pat, colon_token)),
-                    dots,
-                    comma: None,
-                }));
-            }
-        }
-
-        Ok(FnArgOrVariadic::FnArg(FnArg::Typed(PatType {
-            attrs,
-            pat,
-            colon_token,
-            ty: input.parse()?,
-        })))
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Receiver {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let reference = if input.peek(Token![&]) {
-                let ampersand: Token![&] = input.parse()?;
-                let lifetime: Option<Lifetime> = input.parse()?;
-                Some((ampersand, lifetime))
-            } else {
-                None
-            };
-            let mutability: Option<Token![mut]> = input.parse()?;
-            let self_token: Token![self] = input.parse()?;
-            let colon_token: Option<Token![:]> = if reference.is_some() {
-                None
-            } else {
-                input.parse()?
-            };
-            let ty: Type = if colon_token.is_some() {
-                input.parse()?
-            } else {
-                let mut ty = Type::Path(TypePath {
-                    qself: None,
-                    path: Path::from(Ident::new("Self", self_token.span)),
-                });
-                if let Some((ampersand, lifetime)) = reference.as_ref() {
-                    ty = Type::Reference(TypeReference {
-                        and_token: Token![&](ampersand.span),
-                        lifetime: lifetime.clone(),
-                        mutability: mutability.as_ref().map(|m| Token![mut](m.span)),
-                        elem: Box::new(ty),
-                    });
-                }
-                ty
-            };
-            Ok(Receiver {
-                attrs: Vec::new(),
-                reference,
-                mutability,
-                self_token,
-                colon_token,
-                ty: Box::new(ty),
-            })
-        }
-    }
-
-    fn parse_fn_args(
-        input: ParseStream,
-    ) -> Result<(Punctuated<FnArg, Token![,]>, Option<Variadic>)> {
-        let mut args = Punctuated::new();
-        let mut variadic = None;
-        let mut has_receiver = false;
-
-        while !input.is_empty() {
-            let attrs = input.call(Attribute::parse_outer)?;
-
-            if let Some(dots) = input.parse::<Option<Token![...]>>()? {
-                variadic = Some(Variadic {
-                    attrs,
-                    pat: None,
-                    dots,
-                    comma: if input.is_empty() {
-                        None
-                    } else {
-                        Some(input.parse()?)
-                    },
-                });
-                break;
-            }
-
-            let allow_variadic = true;
-            let arg = match parse_fn_arg_or_variadic(input, attrs, allow_variadic)? {
-                FnArgOrVariadic::FnArg(arg) => arg,
-                FnArgOrVariadic::Variadic(arg) => {
-                    variadic = Some(Variadic {
-                        comma: if input.is_empty() {
-                            None
-                        } else {
-                            Some(input.parse()?)
-                        },
-                        ..arg
-                    });
-                    break;
-                }
-            };
-
-            match &arg {
-                FnArg::Receiver(receiver) if has_receiver => {
-                    return Err(Error::new(
-                        receiver.self_token.span,
-                        "unexpected second method receiver",
-                    ));
-                }
-                FnArg::Receiver(receiver) if !args.is_empty() => {
-                    return Err(Error::new(
-                        receiver.self_token.span,
-                        "unexpected method receiver",
-                    ));
-                }
-                FnArg::Receiver(_) => has_receiver = true,
-                FnArg::Typed(_) => {}
-            }
-            args.push_value(arg);
-
-            if input.is_empty() {
-                break;
-            }
-
-            let comma: Token![,] = input.parse()?;
-            args.push_punct(comma);
-        }
-
-        Ok((args, variadic))
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ItemMod {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let mut attrs = input.call(Attribute::parse_outer)?;
-            let vis: Visibility = input.parse()?;
-            let unsafety: Option<Token![unsafe]> = input.parse()?;
-            let mod_token: Token![mod] = input.parse()?;
-            let ident: Ident = if input.peek(Token![try]) {
-                input.call(Ident::parse_any)
-            } else {
-                input.parse()
-            }?;
-
-            let lookahead = input.lookahead1();
-            if lookahead.peek(Token![;]) {
-                Ok(ItemMod {
-                    attrs,
-                    vis,
-                    unsafety,
-                    mod_token,
-                    ident,
-                    content: None,
-                    semi: Some(input.parse()?),
-                })
-            } else if lookahead.peek(token::Brace) {
-                let content;
-                let brace_token = braced!(content in input);
-                attr::parsing::parse_inner(&content, &mut attrs)?;
-
-                let mut items = Vec::new();
-                while !content.is_empty() {
-                    items.push(content.parse()?);
-                }
-
-                Ok(ItemMod {
-                    attrs,
-                    vis,
-                    unsafety,
-                    mod_token,
-                    ident,
-                    content: Some((brace_token, items)),
-                    semi: None,
-                })
-            } else {
-                Err(lookahead.error())
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ItemForeignMod {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let mut attrs = input.call(Attribute::parse_outer)?;
-            let unsafety: Option<Token![unsafe]> = input.parse()?;
-            let abi: Abi = input.parse()?;
-
-            let content;
-            let brace_token = braced!(content in input);
-            attr::parsing::parse_inner(&content, &mut attrs)?;
-            let mut items = Vec::new();
-            while !content.is_empty() {
-                items.push(content.parse()?);
-            }
-
-            Ok(ItemForeignMod {
-                attrs,
-                unsafety,
-                abi,
-                brace_token,
-                items,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ForeignItem {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let begin = input.fork();
-            let mut attrs = input.call(Attribute::parse_outer)?;
-            let ahead = input.fork();
-            let vis: Visibility = ahead.parse()?;
-
-            let lookahead = ahead.lookahead1();
-            let mut item = if lookahead.peek(Token![fn]) || peek_signature(&ahead) {
-                let vis: Visibility = input.parse()?;
-                let sig: Signature = input.parse()?;
-                if input.peek(token::Brace) {
-                    let content;
-                    braced!(content in input);
-                    content.call(Attribute::parse_inner)?;
-                    content.call(Block::parse_within)?;
-
-                    Ok(ForeignItem::Verbatim(verbatim::between(&begin, input)))
-                } else {
-                    Ok(ForeignItem::Fn(ForeignItemFn {
-                        attrs: Vec::new(),
-                        vis,
-                        sig,
-                        semi_token: input.parse()?,
-                    }))
-                }
-            } else if lookahead.peek(Token![static]) {
-                let vis = input.parse()?;
-                let static_token = input.parse()?;
-                let mutability = input.parse()?;
-                let ident = input.parse()?;
-                let colon_token = input.parse()?;
-                let ty = input.parse()?;
-                if input.peek(Token![=]) {
-                    input.parse::<Token![=]>()?;
-                    input.parse::<Expr>()?;
-                    input.parse::<Token![;]>()?;
-                    Ok(ForeignItem::Verbatim(verbatim::between(&begin, input)))
-                } else {
-                    Ok(ForeignItem::Static(ForeignItemStatic {
-                        attrs: Vec::new(),
-                        vis,
-                        static_token,
-                        mutability,
-                        ident,
-                        colon_token,
-                        ty,
-                        semi_token: input.parse()?,
-                    }))
-                }
-            } else if lookahead.peek(Token![type]) {
-                parse_foreign_item_type(begin, input)
-            } else if vis.is_inherited()
-                && (lookahead.peek(Ident)
-                    || lookahead.peek(Token![self])
-                    || lookahead.peek(Token![super])
-                    || lookahead.peek(Token![crate])
-                    || lookahead.peek(Token![::]))
-            {
-                input.parse().map(ForeignItem::Macro)
-            } else {
-                Err(lookahead.error())
-            }?;
-
-            let item_attrs = match &mut item {
-                ForeignItem::Fn(item) => &mut item.attrs,
-                ForeignItem::Static(item) => &mut item.attrs,
-                ForeignItem::Type(item) => &mut item.attrs,
-                ForeignItem::Macro(item) => &mut item.attrs,
-                ForeignItem::Verbatim(_) => return Ok(item),
-            };
-            attrs.append(item_attrs);
-            *item_attrs = attrs;
-
-            Ok(item)
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ForeignItemFn {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let vis: Visibility = input.parse()?;
-            let sig: Signature = input.parse()?;
-            let semi_token: Token![;] = input.parse()?;
-            Ok(ForeignItemFn {
-                attrs,
-                vis,
-                sig,
-                semi_token,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ForeignItemStatic {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(ForeignItemStatic {
-                attrs: input.call(Attribute::parse_outer)?,
-                vis: input.parse()?,
-                static_token: input.parse()?,
-                mutability: input.parse()?,
-                ident: input.parse()?,
-                colon_token: input.parse()?,
-                ty: input.parse()?,
-                semi_token: input.parse()?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ForeignItemType {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(ForeignItemType {
-                attrs: input.call(Attribute::parse_outer)?,
-                vis: input.parse()?,
-                type_token: input.parse()?,
-                ident: input.parse()?,
-                generics: {
-                    let mut generics: Generics = input.parse()?;
-                    generics.where_clause = input.parse()?;
-                    generics
-                },
-                semi_token: input.parse()?,
-            })
-        }
-    }
-
-    fn parse_foreign_item_type(begin: ParseBuffer, input: ParseStream) -> Result<ForeignItem> {
-        let FlexibleItemType {
-            vis,
-            defaultness: _,
-            type_token,
-            ident,
-            generics,
-            colon_token,
-            bounds: _,
-            ty,
-            semi_token,
-        } = FlexibleItemType::parse(
-            input,
-            TypeDefaultness::Disallowed,
-            WhereClauseLocation::Both,
-        )?;
-
-        if colon_token.is_some() || ty.is_some() {
-            Ok(ForeignItem::Verbatim(verbatim::between(&begin, input)))
-        } else {
-            Ok(ForeignItem::Type(ForeignItemType {
-                attrs: Vec::new(),
-                vis,
-                type_token,
-                ident,
-                generics,
-                semi_token,
-            }))
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ForeignItemMacro {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let mac: Macro = input.parse()?;
-            let semi_token: Option<Token![;]> = if mac.delimiter.is_brace() {
-                None
-            } else {
-                Some(input.parse()?)
-            };
-            Ok(ForeignItemMacro {
-                attrs,
-                mac,
-                semi_token,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ItemType {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(ItemType {
-                attrs: input.call(Attribute::parse_outer)?,
-                vis: input.parse()?,
-                type_token: input.parse()?,
-                ident: input.parse()?,
-                generics: {
-                    let mut generics: Generics = input.parse()?;
-                    generics.where_clause = input.parse()?;
-                    generics
-                },
-                eq_token: input.parse()?,
-                ty: input.parse()?,
-                semi_token: input.parse()?,
-            })
-        }
-    }
-
-    fn parse_item_type(begin: ParseBuffer, input: ParseStream) -> Result<Item> {
-        let FlexibleItemType {
-            vis,
-            defaultness: _,
-            type_token,
-            ident,
-            generics,
-            colon_token,
-            bounds: _,
-            ty,
-            semi_token,
-        } = FlexibleItemType::parse(
-            input,
-            TypeDefaultness::Disallowed,
-            WhereClauseLocation::BeforeEq,
-        )?;
-
-        let (eq_token, ty) = match ty {
-            Some(ty) if colon_token.is_none() => ty,
-            _ => return Ok(Item::Verbatim(verbatim::between(&begin, input))),
-        };
-
-        Ok(Item::Type(ItemType {
-            attrs: Vec::new(),
-            vis,
-            type_token,
-            ident,
-            generics,
-            eq_token,
-            ty: Box::new(ty),
-            semi_token,
-        }))
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ItemStruct {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let vis = input.parse::<Visibility>()?;
-            let struct_token = input.parse::<Token![struct]>()?;
-            let ident = input.parse::<Ident>()?;
-            let generics = input.parse::<Generics>()?;
-            let (where_clause, fields, semi_token) = derive::parsing::data_struct(input)?;
-            Ok(ItemStruct {
-                attrs,
-                vis,
-                struct_token,
-                ident,
-                generics: Generics {
-                    where_clause,
-                    ..generics
-                },
-                fields,
-                semi_token,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ItemEnum {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let vis = input.parse::<Visibility>()?;
-            let enum_token = input.parse::<Token![enum]>()?;
-            let ident = input.parse::<Ident>()?;
-            let generics = input.parse::<Generics>()?;
-            let (where_clause, brace_token, variants) = derive::parsing::data_enum(input)?;
-            Ok(ItemEnum {
-                attrs,
-                vis,
-                enum_token,
-                ident,
-                generics: Generics {
-                    where_clause,
-                    ..generics
-                },
-                brace_token,
-                variants,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ItemUnion {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let vis = input.parse::<Visibility>()?;
-            let union_token = input.parse::<Token![union]>()?;
-            let ident = input.parse::<Ident>()?;
-            let generics = input.parse::<Generics>()?;
-            let (where_clause, fields) = derive::parsing::data_union(input)?;
-            Ok(ItemUnion {
-                attrs,
-                vis,
-                union_token,
-                ident,
-                generics: Generics {
-                    where_clause,
-                    ..generics
-                },
-                fields,
-            })
-        }
-    }
-
-    fn parse_trait_or_trait_alias(input: ParseStream) -> Result<Item> {
-        let (attrs, vis, trait_token, ident, generics) = parse_start_of_trait_alias(input)?;
-        let lookahead = input.lookahead1();
-        if lookahead.peek(token::Brace)
-            || lookahead.peek(Token![:])
-            || lookahead.peek(Token![where])
-        {
-            let unsafety = None;
-            let auto_token = None;
-            parse_rest_of_trait(
-                input,
-                attrs,
-                vis,
-                unsafety,
-                auto_token,
-                trait_token,
-                ident,
-                generics,
-            )
-            .map(Item::Trait)
-        } else if lookahead.peek(Token![=]) {
-            parse_rest_of_trait_alias(input, attrs, vis, trait_token, ident, generics)
-                .map(Item::TraitAlias)
-        } else {
-            Err(lookahead.error())
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ItemTrait {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let outer_attrs = input.call(Attribute::parse_outer)?;
-            let vis: Visibility = input.parse()?;
-            let unsafety: Option<Token![unsafe]> = input.parse()?;
-            let auto_token: Option<Token![auto]> = input.parse()?;
-            let trait_token: Token![trait] = input.parse()?;
-            let ident: Ident = input.parse()?;
-            let generics: Generics = input.parse()?;
-            parse_rest_of_trait(
-                input,
-                outer_attrs,
-                vis,
-                unsafety,
-                auto_token,
-                trait_token,
-                ident,
-                generics,
-            )
-        }
-    }
-
-    fn parse_rest_of_trait(
-        input: ParseStream,
-        mut attrs: Vec<Attribute>,
-        vis: Visibility,
-        unsafety: Option<Token![unsafe]>,
-        auto_token: Option<Token![auto]>,
-        trait_token: Token![trait],
-        ident: Ident,
-        mut generics: Generics,
-    ) -> Result<ItemTrait> {
-        let colon_token: Option<Token![:]> = input.parse()?;
-
-        let mut supertraits = Punctuated::new();
-        if colon_token.is_some() {
-            loop {
-                if input.peek(Token![where]) || input.peek(token::Brace) {
-                    break;
-                }
-                supertraits.push_value(input.parse()?);
-                if input.peek(Token![where]) || input.peek(token::Brace) {
-                    break;
-                }
-                supertraits.push_punct(input.parse()?);
-            }
-        }
-
-        generics.where_clause = input.parse()?;
-
-        let content;
-        let brace_token = braced!(content in input);
-        attr::parsing::parse_inner(&content, &mut attrs)?;
-        let mut items = Vec::new();
-        while !content.is_empty() {
-            items.push(content.parse()?);
-        }
-
-        Ok(ItemTrait {
-            attrs,
-            vis,
-            unsafety,
-            auto_token,
-            restriction: None,
-            trait_token,
-            ident,
-            generics,
-            colon_token,
-            supertraits,
-            brace_token,
-            items,
-        })
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ItemTraitAlias {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let (attrs, vis, trait_token, ident, generics) = parse_start_of_trait_alias(input)?;
-            parse_rest_of_trait_alias(input, attrs, vis, trait_token, ident, generics)
-        }
-    }
-
-    fn parse_start_of_trait_alias(
-        input: ParseStream,
-    ) -> Result<(Vec<Attribute>, Visibility, Token![trait], Ident, Generics)> {
-        let attrs = input.call(Attribute::parse_outer)?;
-        let vis: Visibility = input.parse()?;
-        let trait_token: Token![trait] = input.parse()?;
-        let ident: Ident = input.parse()?;
-        let generics: Generics = input.parse()?;
-        Ok((attrs, vis, trait_token, ident, generics))
-    }
-
-    fn parse_rest_of_trait_alias(
-        input: ParseStream,
-        attrs: Vec<Attribute>,
-        vis: Visibility,
-        trait_token: Token![trait],
-        ident: Ident,
-        mut generics: Generics,
-    ) -> Result<ItemTraitAlias> {
-        let eq_token: Token![=] = input.parse()?;
-
-        let mut bounds = Punctuated::new();
-        loop {
-            if input.peek(Token![where]) || input.peek(Token![;]) {
-                break;
-            }
-            bounds.push_value(input.parse()?);
-            if input.peek(Token![where]) || input.peek(Token![;]) {
-                break;
-            }
-            bounds.push_punct(input.parse()?);
-        }
-
-        generics.where_clause = input.parse()?;
-        let semi_token: Token![;] = input.parse()?;
-
-        Ok(ItemTraitAlias {
-            attrs,
-            vis,
-            trait_token,
-            ident,
-            generics,
-            eq_token,
-            bounds,
-            semi_token,
-        })
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TraitItem {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let begin = input.fork();
-            let mut attrs = input.call(Attribute::parse_outer)?;
-            let vis: Visibility = input.parse()?;
-            let defaultness: Option<Token![default]> = input.parse()?;
-            let ahead = input.fork();
-
-            let lookahead = ahead.lookahead1();
-            let mut item = if lookahead.peek(Token![fn]) || peek_signature(&ahead) {
-                input.parse().map(TraitItem::Fn)
-            } else if lookahead.peek(Token![const]) {
-                let const_token: Token![const] = ahead.parse()?;
-                let lookahead = ahead.lookahead1();
-                if lookahead.peek(Ident) || lookahead.peek(Token![_]) {
-                    input.advance_to(&ahead);
-                    let ident = input.call(Ident::parse_any)?;
-                    let mut generics: Generics = input.parse()?;
-                    let colon_token: Token![:] = input.parse()?;
-                    let ty: Type = input.parse()?;
-                    let default = if let Some(eq_token) = input.parse::<Option<Token![=]>>()? {
-                        let expr: Expr = input.parse()?;
-                        Some((eq_token, expr))
-                    } else {
-                        None
-                    };
-                    generics.where_clause = input.parse()?;
-                    let semi_token: Token![;] = input.parse()?;
-                    if generics.lt_token.is_none() && generics.where_clause.is_none() {
-                        Ok(TraitItem::Const(TraitItemConst {
-                            attrs: Vec::new(),
-                            const_token,
-                            ident,
-                            generics,
-                            colon_token,
-                            ty,
-                            default,
-                            semi_token,
-                        }))
-                    } else {
-                        return Ok(TraitItem::Verbatim(verbatim::between(&begin, input)));
-                    }
-                } else if lookahead.peek(Token![async])
-                    || lookahead.peek(Token![unsafe])
-                    || lookahead.peek(Token![extern])
-                    || lookahead.peek(Token![fn])
-                {
-                    input.parse().map(TraitItem::Fn)
-                } else {
-                    Err(lookahead.error())
-                }
-            } else if lookahead.peek(Token![type]) {
-                parse_trait_item_type(begin.fork(), input)
-            } else if vis.is_inherited()
-                && defaultness.is_none()
-                && (lookahead.peek(Ident)
-                    || lookahead.peek(Token![self])
-                    || lookahead.peek(Token![super])
-                    || lookahead.peek(Token![crate])
-                    || lookahead.peek(Token![::]))
-            {
-                input.parse().map(TraitItem::Macro)
-            } else {
-                Err(lookahead.error())
-            }?;
-
-            match (vis, defaultness) {
-                (Visibility::Inherited, None) => {}
-                _ => return Ok(TraitItem::Verbatim(verbatim::between(&begin, input))),
-            }
-
-            let item_attrs = match &mut item {
-                TraitItem::Const(item) => &mut item.attrs,
-                TraitItem::Fn(item) => &mut item.attrs,
-                TraitItem::Type(item) => &mut item.attrs,
-                TraitItem::Macro(item) => &mut item.attrs,
-                TraitItem::Verbatim(_) => unreachable!(),
-            };
-            attrs.append(item_attrs);
-            *item_attrs = attrs;
-            Ok(item)
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TraitItemConst {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let const_token: Token![const] = input.parse()?;
-
-            let lookahead = input.lookahead1();
-            let ident = if lookahead.peek(Ident) || lookahead.peek(Token![_]) {
-                input.call(Ident::parse_any)?
-            } else {
-                return Err(lookahead.error());
-            };
-
-            let colon_token: Token![:] = input.parse()?;
-            let ty: Type = input.parse()?;
-            let default = if input.peek(Token![=]) {
-                let eq_token: Token![=] = input.parse()?;
-                let default: Expr = input.parse()?;
-                Some((eq_token, default))
-            } else {
-                None
-            };
-            let semi_token: Token![;] = input.parse()?;
-
-            Ok(TraitItemConst {
-                attrs,
-                const_token,
-                ident,
-                generics: Generics::default(),
-                colon_token,
-                ty,
-                default,
-                semi_token,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TraitItemFn {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let mut attrs = input.call(Attribute::parse_outer)?;
-            let sig: Signature = input.parse()?;
-
-            let lookahead = input.lookahead1();
-            let (brace_token, stmts, semi_token) = if lookahead.peek(token::Brace) {
-                let content;
-                let brace_token = braced!(content in input);
-                attr::parsing::parse_inner(&content, &mut attrs)?;
-                let stmts = content.call(Block::parse_within)?;
-                (Some(brace_token), stmts, None)
-            } else if lookahead.peek(Token![;]) {
-                let semi_token: Token![;] = input.parse()?;
-                (None, Vec::new(), Some(semi_token))
-            } else {
-                return Err(lookahead.error());
-            };
-
-            Ok(TraitItemFn {
-                attrs,
-                sig,
-                default: brace_token.map(|brace_token| Block { brace_token, stmts }),
-                semi_token,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TraitItemType {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let type_token: Token![type] = input.parse()?;
-            let ident: Ident = input.parse()?;
-            let mut generics: Generics = input.parse()?;
-            let (colon_token, bounds) = FlexibleItemType::parse_optional_bounds(input)?;
-            let default = FlexibleItemType::parse_optional_definition(input)?;
-            generics.where_clause = input.parse()?;
-            let semi_token: Token![;] = input.parse()?;
-            Ok(TraitItemType {
-                attrs,
-                type_token,
-                ident,
-                generics,
-                colon_token,
-                bounds,
-                default,
-                semi_token,
-            })
-        }
-    }
-
-    fn parse_trait_item_type(begin: ParseBuffer, input: ParseStream) -> Result<TraitItem> {
-        let FlexibleItemType {
-            vis,
-            defaultness: _,
-            type_token,
-            ident,
-            generics,
-            colon_token,
-            bounds,
-            ty,
-            semi_token,
-        } = FlexibleItemType::parse(
-            input,
-            TypeDefaultness::Disallowed,
-            WhereClauseLocation::AfterEq,
-        )?;
-
-        if vis.is_some() {
-            Ok(TraitItem::Verbatim(verbatim::between(&begin, input)))
-        } else {
-            Ok(TraitItem::Type(TraitItemType {
-                attrs: Vec::new(),
-                type_token,
-                ident,
-                generics,
-                colon_token,
-                bounds,
-                default: ty,
-                semi_token,
-            }))
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TraitItemMacro {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let mac: Macro = input.parse()?;
-            let semi_token: Option<Token![;]> = if mac.delimiter.is_brace() {
-                None
-            } else {
-                Some(input.parse()?)
-            };
-            Ok(TraitItemMacro {
-                attrs,
-                mac,
-                semi_token,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ItemImpl {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let allow_verbatim_impl = false;
-            parse_impl(input, allow_verbatim_impl).map(Option::unwrap)
-        }
-    }
-
-    fn parse_impl(input: ParseStream, allow_verbatim_impl: bool) -> Result<Option<ItemImpl>> {
-        let mut attrs = input.call(Attribute::parse_outer)?;
-        let has_visibility = allow_verbatim_impl && input.parse::<Visibility>()?.is_some();
-        let defaultness: Option<Token![default]> = input.parse()?;
-        let unsafety: Option<Token![unsafe]> = input.parse()?;
-        let impl_token: Token![impl] = input.parse()?;
-
-        let has_generics = input.peek(Token![<])
-            && (input.peek2(Token![>])
-                || input.peek2(Token![#])
-                || (input.peek2(Ident) || input.peek2(Lifetime))
-                    && (input.peek3(Token![:])
-                        || input.peek3(Token![,])
-                        || input.peek3(Token![>])
-                        || input.peek3(Token![=]))
-                || input.peek2(Token![const]));
-        let mut generics: Generics = if has_generics {
-            input.parse()?
-        } else {
-            Generics::default()
-        };
-
-        let is_const_impl = allow_verbatim_impl
-            && (input.peek(Token![const]) || input.peek(Token![?]) && input.peek2(Token![const]));
-        if is_const_impl {
-            input.parse::<Option<Token![?]>>()?;
-            input.parse::<Token![const]>()?;
-        }
-
-        let begin = input.fork();
-        let polarity = if input.peek(Token![!]) && !input.peek2(token::Brace) {
-            Some(input.parse::<Token![!]>()?)
-        } else {
-            None
-        };
-
-        #[cfg(not(feature = "printing"))]
-        let first_ty_span = input.span();
-        let mut first_ty: Type = input.parse()?;
-        let self_ty: Type;
-        let trait_;
-
-        let is_impl_for = input.peek(Token![for]);
-        if is_impl_for {
-            let for_token: Token![for] = input.parse()?;
-            let mut first_ty_ref = &first_ty;
-            while let Type::Group(ty) = first_ty_ref {
-                first_ty_ref = &ty.elem;
-            }
-            if let Type::Path(TypePath { qself: None, .. }) = first_ty_ref {
-                while let Type::Group(ty) = first_ty {
-                    first_ty = *ty.elem;
-                }
-                if let Type::Path(TypePath { qself: None, path }) = first_ty {
-                    trait_ = Some((polarity, path, for_token));
-                } else {
-                    unreachable!();
-                }
-            } else if !allow_verbatim_impl {
-                #[cfg(feature = "printing")]
-                return Err(Error::new_spanned(first_ty_ref, "expected trait path"));
-                #[cfg(not(feature = "printing"))]
-                return Err(Error::new(first_ty_span, "expected trait path"));
-            } else {
-                trait_ = None;
-            }
-            self_ty = input.parse()?;
-        } else {
-            trait_ = None;
-            self_ty = if polarity.is_none() {
-                first_ty
-            } else {
-                Type::Verbatim(verbatim::between(&begin, input))
-            };
-        }
-
-        generics.where_clause = input.parse()?;
-
-        let content;
-        let brace_token = braced!(content in input);
-        attr::parsing::parse_inner(&content, &mut attrs)?;
-
-        let mut items = Vec::new();
-        while !content.is_empty() {
-            items.push(content.parse()?);
-        }
-
-        if has_visibility || is_const_impl || is_impl_for && trait_.is_none() {
-            Ok(None)
-        } else {
-            Ok(Some(ItemImpl {
-                attrs,
-                defaultness,
-                unsafety,
-                impl_token,
-                generics,
-                trait_,
-                self_ty: Box::new(self_ty),
-                brace_token,
-                items,
-            }))
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ImplItem {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let begin = input.fork();
-            let mut attrs = input.call(Attribute::parse_outer)?;
-            let ahead = input.fork();
-            let vis: Visibility = ahead.parse()?;
-
-            let mut lookahead = ahead.lookahead1();
-            let defaultness = if lookahead.peek(Token![default]) && !ahead.peek2(Token![!]) {
-                let defaultness: Token![default] = ahead.parse()?;
-                lookahead = ahead.lookahead1();
-                Some(defaultness)
-            } else {
-                None
-            };
-
-            let mut item = if lookahead.peek(Token![fn]) || peek_signature(&ahead) {
-                let allow_omitted_body = true;
-                if let Some(item) = parse_impl_item_fn(input, allow_omitted_body)? {
-                    Ok(ImplItem::Fn(item))
-                } else {
-                    Ok(ImplItem::Verbatim(verbatim::between(&begin, input)))
-                }
-            } else if lookahead.peek(Token![const]) {
-                input.advance_to(&ahead);
-                let const_token: Token![const] = input.parse()?;
-                let lookahead = input.lookahead1();
-                let ident = if lookahead.peek(Ident) || lookahead.peek(Token![_]) {
-                    input.call(Ident::parse_any)?
-                } else {
-                    return Err(lookahead.error());
-                };
-                let mut generics: Generics = input.parse()?;
-                let colon_token: Token![:] = input.parse()?;
-                let ty: Type = input.parse()?;
-                let value = if let Some(eq_token) = input.parse::<Option<Token![=]>>()? {
-                    let expr: Expr = input.parse()?;
-                    Some((eq_token, expr))
-                } else {
-                    None
-                };
-                generics.where_clause = input.parse()?;
-                let semi_token: Token![;] = input.parse()?;
-                return match value {
-                    Some((eq_token, expr))
-                        if generics.lt_token.is_none() && generics.where_clause.is_none() =>
-                    {
-                        Ok(ImplItem::Const(ImplItemConst {
-                            attrs,
-                            vis,
-                            defaultness,
-                            const_token,
-                            ident,
-                            generics,
-                            colon_token,
-                            ty,
-                            eq_token,
-                            expr,
-                            semi_token,
-                        }))
-                    }
-                    _ => Ok(ImplItem::Verbatim(verbatim::between(&begin, input))),
-                };
-            } else if lookahead.peek(Token![type]) {
-                parse_impl_item_type(begin, input)
-            } else if vis.is_inherited()
-                && defaultness.is_none()
-                && (lookahead.peek(Ident)
-                    || lookahead.peek(Token![self])
-                    || lookahead.peek(Token![super])
-                    || lookahead.peek(Token![crate])
-                    || lookahead.peek(Token![::]))
-            {
-                input.parse().map(ImplItem::Macro)
-            } else {
-                Err(lookahead.error())
-            }?;
-
-            {
-                let item_attrs = match &mut item {
-                    ImplItem::Const(item) => &mut item.attrs,
-                    ImplItem::Fn(item) => &mut item.attrs,
-                    ImplItem::Type(item) => &mut item.attrs,
-                    ImplItem::Macro(item) => &mut item.attrs,
-                    ImplItem::Verbatim(_) => return Ok(item),
-                };
-                attrs.append(item_attrs);
-                *item_attrs = attrs;
-            }
-
-            Ok(item)
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ImplItemConst {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let vis: Visibility = input.parse()?;
-            let defaultness: Option<Token![default]> = input.parse()?;
-            let const_token: Token![const] = input.parse()?;
-
-            let lookahead = input.lookahead1();
-            let ident = if lookahead.peek(Ident) || lookahead.peek(Token![_]) {
-                input.call(Ident::parse_any)?
-            } else {
-                return Err(lookahead.error());
-            };
-
-            let colon_token: Token![:] = input.parse()?;
-            let ty: Type = input.parse()?;
-            let eq_token: Token![=] = input.parse()?;
-            let expr: Expr = input.parse()?;
-            let semi_token: Token![;] = input.parse()?;
-
-            Ok(ImplItemConst {
-                attrs,
-                vis,
-                defaultness,
-                const_token,
-                ident,
-                generics: Generics::default(),
-                colon_token,
-                ty,
-                eq_token,
-                expr,
-                semi_token,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ImplItemFn {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let allow_omitted_body = false;
-            parse_impl_item_fn(input, allow_omitted_body).map(Option::unwrap)
-        }
-    }
-
-    fn parse_impl_item_fn(
-        input: ParseStream,
-        allow_omitted_body: bool,
-    ) -> Result<Option<ImplItemFn>> {
-        let mut attrs = input.call(Attribute::parse_outer)?;
-        let vis: Visibility = input.parse()?;
-        let defaultness: Option<Token![default]> = input.parse()?;
-        let sig: Signature = input.parse()?;
-
-        // Accept functions without a body in an impl block because rustc's
-        // *parser* does not reject them (the compilation error is emitted later
-        // than parsing) and it can be useful for macro DSLs.
-        if allow_omitted_body && input.parse::<Option<Token![;]>>()?.is_some() {
-            return Ok(None);
-        }
-
-        let content;
-        let brace_token = braced!(content in input);
-        attrs.extend(content.call(Attribute::parse_inner)?);
-        let block = Block {
-            brace_token,
-            stmts: content.call(Block::parse_within)?,
-        };
-
-        Ok(Some(ImplItemFn {
-            attrs,
-            vis,
-            defaultness,
-            sig,
-            block,
-        }))
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ImplItemType {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let vis: Visibility = input.parse()?;
-            let defaultness: Option<Token![default]> = input.parse()?;
-            let type_token: Token![type] = input.parse()?;
-            let ident: Ident = input.parse()?;
-            let mut generics: Generics = input.parse()?;
-            let eq_token: Token![=] = input.parse()?;
-            let ty: Type = input.parse()?;
-            generics.where_clause = input.parse()?;
-            let semi_token: Token![;] = input.parse()?;
-            Ok(ImplItemType {
-                attrs,
-                vis,
-                defaultness,
-                type_token,
-                ident,
-                generics,
-                eq_token,
-                ty,
-                semi_token,
-            })
-        }
-    }
-
-    fn parse_impl_item_type(begin: ParseBuffer, input: ParseStream) -> Result<ImplItem> {
-        let FlexibleItemType {
-            vis,
-            defaultness,
-            type_token,
-            ident,
-            generics,
-            colon_token,
-            bounds: _,
-            ty,
-            semi_token,
-        } = FlexibleItemType::parse(
-            input,
-            TypeDefaultness::Optional,
-            WhereClauseLocation::AfterEq,
-        )?;
-
-        let (eq_token, ty) = match ty {
-            Some(ty) if colon_token.is_none() => ty,
-            _ => return Ok(ImplItem::Verbatim(verbatim::between(&begin, input))),
-        };
-
-        Ok(ImplItem::Type(ImplItemType {
-            attrs: Vec::new(),
-            vis,
-            defaultness,
-            type_token,
-            ident,
-            generics,
-            eq_token,
-            ty,
-            semi_token,
-        }))
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ImplItemMacro {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let attrs = input.call(Attribute::parse_outer)?;
-            let mac: Macro = input.parse()?;
-            let semi_token: Option<Token![;]> = if mac.delimiter.is_brace() {
-                None
-            } else {
-                Some(input.parse()?)
-            };
-            Ok(ImplItemMacro {
-                attrs,
-                mac,
-                semi_token,
-            })
-        }
-    }
-
-    impl Visibility {
-        fn is_inherited(&self) -> bool {
-            match self {
-                Visibility::Inherited => true,
-                _ => false,
-            }
-        }
-    }
-
-    impl MacroDelimiter {
-        pub(crate) fn is_brace(&self) -> bool {
-            match self {
-                MacroDelimiter::Brace(_) => true,
-                MacroDelimiter::Paren(_) | MacroDelimiter::Bracket(_) => false,
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for StaticMutability {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let mut_token: Option<Token![mut]> = input.parse()?;
-            Ok(mut_token.map_or(StaticMutability::None, StaticMutability::Mut))
-        }
-    }
-}
-
-#[cfg(feature = "printing")]
-mod printing {
-    use super::*;
-    use crate::attr::FilterAttrs;
-    use crate::print::TokensOrDefault;
-    use proc_macro2::TokenStream;
-    use quote::{ToTokens, TokenStreamExt};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ItemExternCrate {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.extern_token.to_tokens(tokens);
-            self.crate_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            if let Some((as_token, rename)) = &self.rename {
-                as_token.to_tokens(tokens);
-                rename.to_tokens(tokens);
-            }
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ItemUse {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.use_token.to_tokens(tokens);
-            self.leading_colon.to_tokens(tokens);
-            self.tree.to_tokens(tokens);
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ItemStatic {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.static_token.to_tokens(tokens);
-            self.mutability.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.colon_token.to_tokens(tokens);
-            self.ty.to_tokens(tokens);
-            self.eq_token.to_tokens(tokens);
-            self.expr.to_tokens(tokens);
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ItemConst {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.const_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.colon_token.to_tokens(tokens);
-            self.ty.to_tokens(tokens);
-            self.eq_token.to_tokens(tokens);
-            self.expr.to_tokens(tokens);
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ItemFn {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.sig.to_tokens(tokens);
-            self.block.brace_token.surround(tokens, |tokens| {
-                tokens.append_all(self.attrs.inner());
-                tokens.append_all(&self.block.stmts);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ItemMod {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.unsafety.to_tokens(tokens);
-            self.mod_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            if let Some((brace, items)) = &self.content {
-                brace.surround(tokens, |tokens| {
-                    tokens.append_all(self.attrs.inner());
-                    tokens.append_all(items);
-                });
-            } else {
-                TokensOrDefault(&self.semi).to_tokens(tokens);
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ItemForeignMod {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.unsafety.to_tokens(tokens);
-            self.abi.to_tokens(tokens);
-            self.brace_token.surround(tokens, |tokens| {
-                tokens.append_all(self.attrs.inner());
-                tokens.append_all(&self.items);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ItemType {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.type_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.generics.to_tokens(tokens);
-            self.generics.where_clause.to_tokens(tokens);
-            self.eq_token.to_tokens(tokens);
-            self.ty.to_tokens(tokens);
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ItemEnum {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.enum_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.generics.to_tokens(tokens);
-            self.generics.where_clause.to_tokens(tokens);
-            self.brace_token.surround(tokens, |tokens| {
-                self.variants.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ItemStruct {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.struct_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.generics.to_tokens(tokens);
-            match &self.fields {
-                Fields::Named(fields) => {
-                    self.generics.where_clause.to_tokens(tokens);
-                    fields.to_tokens(tokens);
-                }
-                Fields::Unnamed(fields) => {
-                    fields.to_tokens(tokens);
-                    self.generics.where_clause.to_tokens(tokens);
-                    TokensOrDefault(&self.semi_token).to_tokens(tokens);
-                }
-                Fields::Unit => {
-                    self.generics.where_clause.to_tokens(tokens);
-                    TokensOrDefault(&self.semi_token).to_tokens(tokens);
-                }
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ItemUnion {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.union_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.generics.to_tokens(tokens);
-            self.generics.where_clause.to_tokens(tokens);
-            self.fields.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ItemTrait {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.unsafety.to_tokens(tokens);
-            self.auto_token.to_tokens(tokens);
-            self.trait_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.generics.to_tokens(tokens);
-            if !self.supertraits.is_empty() {
-                TokensOrDefault(&self.colon_token).to_tokens(tokens);
-                self.supertraits.to_tokens(tokens);
-            }
-            self.generics.where_clause.to_tokens(tokens);
-            self.brace_token.surround(tokens, |tokens| {
-                tokens.append_all(self.attrs.inner());
-                tokens.append_all(&self.items);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ItemTraitAlias {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.trait_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.generics.to_tokens(tokens);
-            self.eq_token.to_tokens(tokens);
-            self.bounds.to_tokens(tokens);
-            self.generics.where_clause.to_tokens(tokens);
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ItemImpl {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.defaultness.to_tokens(tokens);
-            self.unsafety.to_tokens(tokens);
-            self.impl_token.to_tokens(tokens);
-            self.generics.to_tokens(tokens);
-            if let Some((polarity, path, for_token)) = &self.trait_ {
-                polarity.to_tokens(tokens);
-                path.to_tokens(tokens);
-                for_token.to_tokens(tokens);
-            }
-            self.self_ty.to_tokens(tokens);
-            self.generics.where_clause.to_tokens(tokens);
-            self.brace_token.surround(tokens, |tokens| {
-                tokens.append_all(self.attrs.inner());
-                tokens.append_all(&self.items);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ItemMacro {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.mac.path.to_tokens(tokens);
-            self.mac.bang_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            match &self.mac.delimiter {
-                MacroDelimiter::Paren(paren) => {
-                    paren.surround(tokens, |tokens| self.mac.tokens.to_tokens(tokens));
-                }
-                MacroDelimiter::Brace(brace) => {
-                    brace.surround(tokens, |tokens| self.mac.tokens.to_tokens(tokens));
-                }
-                MacroDelimiter::Bracket(bracket) => {
-                    bracket.surround(tokens, |tokens| self.mac.tokens.to_tokens(tokens));
-                }
-            }
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for UsePath {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.ident.to_tokens(tokens);
-            self.colon2_token.to_tokens(tokens);
-            self.tree.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for UseName {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.ident.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for UseRename {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.ident.to_tokens(tokens);
-            self.as_token.to_tokens(tokens);
-            self.rename.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for UseGlob {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.star_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for UseGroup {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.brace_token.surround(tokens, |tokens| {
-                self.items.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TraitItemConst {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.const_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.colon_token.to_tokens(tokens);
-            self.ty.to_tokens(tokens);
-            if let Some((eq_token, default)) = &self.default {
-                eq_token.to_tokens(tokens);
-                default.to_tokens(tokens);
-            }
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TraitItemFn {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.sig.to_tokens(tokens);
-            match &self.default {
-                Some(block) => {
-                    block.brace_token.surround(tokens, |tokens| {
-                        tokens.append_all(self.attrs.inner());
-                        tokens.append_all(&block.stmts);
-                    });
-                }
-                None => {
-                    TokensOrDefault(&self.semi_token).to_tokens(tokens);
-                }
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TraitItemType {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.type_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.generics.to_tokens(tokens);
-            if !self.bounds.is_empty() {
-                TokensOrDefault(&self.colon_token).to_tokens(tokens);
-                self.bounds.to_tokens(tokens);
-            }
-            if let Some((eq_token, default)) = &self.default {
-                eq_token.to_tokens(tokens);
-                default.to_tokens(tokens);
-            }
-            self.generics.where_clause.to_tokens(tokens);
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TraitItemMacro {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.mac.to_tokens(tokens);
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ImplItemConst {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.defaultness.to_tokens(tokens);
-            self.const_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.colon_token.to_tokens(tokens);
-            self.ty.to_tokens(tokens);
-            self.eq_token.to_tokens(tokens);
-            self.expr.to_tokens(tokens);
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ImplItemFn {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.defaultness.to_tokens(tokens);
-            self.sig.to_tokens(tokens);
-            self.block.brace_token.surround(tokens, |tokens| {
-                tokens.append_all(self.attrs.inner());
-                tokens.append_all(&self.block.stmts);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ImplItemType {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.defaultness.to_tokens(tokens);
-            self.type_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.generics.to_tokens(tokens);
-            self.eq_token.to_tokens(tokens);
-            self.ty.to_tokens(tokens);
-            self.generics.where_clause.to_tokens(tokens);
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ImplItemMacro {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.mac.to_tokens(tokens);
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ForeignItemFn {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.sig.to_tokens(tokens);
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ForeignItemStatic {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.static_token.to_tokens(tokens);
-            self.mutability.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.colon_token.to_tokens(tokens);
-            self.ty.to_tokens(tokens);
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ForeignItemType {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.vis.to_tokens(tokens);
-            self.type_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.generics.to_tokens(tokens);
-            self.generics.where_clause.to_tokens(tokens);
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ForeignItemMacro {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.mac.to_tokens(tokens);
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Signature {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.constness.to_tokens(tokens);
-            self.asyncness.to_tokens(tokens);
-            self.unsafety.to_tokens(tokens);
-            self.abi.to_tokens(tokens);
-            self.fn_token.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            self.generics.to_tokens(tokens);
-            self.paren_token.surround(tokens, |tokens| {
-                self.inputs.to_tokens(tokens);
-                if let Some(variadic) = &self.variadic {
-                    if !self.inputs.empty_or_trailing() {
-                        <Token![,]>::default().to_tokens(tokens);
-                    }
-                    variadic.to_tokens(tokens);
-                }
-            });
-            self.output.to_tokens(tokens);
-            self.generics.where_clause.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Receiver {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            if let Some((ampersand, lifetime)) = &self.reference {
-                ampersand.to_tokens(tokens);
-                lifetime.to_tokens(tokens);
-            }
-            self.mutability.to_tokens(tokens);
-            self.self_token.to_tokens(tokens);
-            if let Some(colon_token) = &self.colon_token {
-                colon_token.to_tokens(tokens);
-                self.ty.to_tokens(tokens);
-            } else {
-                let consistent = match (&self.reference, &self.mutability, &*self.ty) {
-                    (Some(_), mutability, Type::Reference(ty)) => {
-                        mutability.is_some() == ty.mutability.is_some()
-                            && match &*ty.elem {
-                                Type::Path(ty) => ty.qself.is_none() && ty.path.is_ident("Self"),
-                                _ => false,
-                            }
-                    }
-                    (None, _, Type::Path(ty)) => ty.qself.is_none() && ty.path.is_ident("Self"),
-                    _ => false,
-                };
-                if !consistent {
-                    <Token![:]>::default().to_tokens(tokens);
-                    self.ty.to_tokens(tokens);
-                }
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Variadic {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            if let Some((pat, colon)) = &self.pat {
-                pat.to_tokens(tokens);
-                colon.to_tokens(tokens);
-            }
-            self.dots.to_tokens(tokens);
-            self.comma.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for StaticMutability {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            match self {
-                StaticMutability::None => {}
-                StaticMutability::Mut(mut_token) => mut_token.to_tokens(tokens),
-            }
-        }
-    }
-}
diff --git a/vendor/syn/src/lib.rs b/vendor/syn/src/lib.rs
deleted file mode 100644
index cb8daf6..0000000
--- a/vendor/syn/src/lib.rs
+++ /dev/null
@@ -1,1010 +0,0 @@
-//! [![github]](https://github.com/dtolnay/syn)&ensp;[![crates-io]](https://crates.io/crates/syn)&ensp;[![docs-rs]](crate)
-//!
-//! [github]: https://img.shields.io/badge/github-8da0cb?style=for-the-badge&labelColor=555555&logo=github
-//! [crates-io]: https://img.shields.io/badge/crates.io-fc8d62?style=for-the-badge&labelColor=555555&logo=rust
-//! [docs-rs]: https://img.shields.io/badge/docs.rs-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs
-//!
-//! <br>
-//!
-//! Syn is a parsing library for parsing a stream of Rust tokens into a syntax
-//! tree of Rust source code.
-//!
-//! Currently this library is geared toward use in Rust procedural macros, but
-//! contains some APIs that may be useful more generally.
-//!
-//! - **Data structures** — Syn provides a complete syntax tree that can
-//!   represent any valid Rust source code. The syntax tree is rooted at
-//!   [`syn::File`] which represents a full source file, but there are other
-//!   entry points that may be useful to procedural macros including
-//!   [`syn::Item`], [`syn::Expr`] and [`syn::Type`].
-//!
-//! - **Derives** — Of particular interest to derive macros is
-//!   [`syn::DeriveInput`] which is any of the three legal input items to a
-//!   derive macro. An example below shows using this type in a library that can
-//!   derive implementations of a user-defined trait.
-//!
-//! - **Parsing** — Parsing in Syn is built around [parser functions] with the
-//!   signature `fn(ParseStream) -> Result<T>`. Every syntax tree node defined
-//!   by Syn is individually parsable and may be used as a building block for
-//!   custom syntaxes, or you may dream up your own brand new syntax without
-//!   involving any of our syntax tree types.
-//!
-//! - **Location information** — Every token parsed by Syn is associated with a
-//!   `Span` that tracks line and column information back to the source of that
-//!   token. These spans allow a procedural macro to display detailed error
-//!   messages pointing to all the right places in the user's code. There is an
-//!   example of this below.
-//!
-//! - **Feature flags** — Functionality is aggressively feature gated so your
-//!   procedural macros enable only what they need, and do not pay in compile
-//!   time for all the rest.
-//!
-//! [`syn::File`]: File
-//! [`syn::Item`]: Item
-//! [`syn::Expr`]: Expr
-//! [`syn::Type`]: Type
-//! [`syn::DeriveInput`]: DeriveInput
-//! [parser functions]: mod@parse
-//!
-//! <br>
-//!
-//! # Example of a derive macro
-//!
-//! The canonical derive macro using Syn looks like this. We write an ordinary
-//! Rust function tagged with a `proc_macro_derive` attribute and the name of
-//! the trait we are deriving. Any time that derive appears in the user's code,
-//! the Rust compiler passes their data structure as tokens into our macro. We
-//! get to execute arbitrary Rust code to figure out what to do with those
-//! tokens, then hand some tokens back to the compiler to compile into the
-//! user's crate.
-//!
-//! [`TokenStream`]: proc_macro::TokenStream
-//!
-//! ```toml
-//! [dependencies]
-//! syn = "2.0"
-//! quote = "1.0"
-//!
-//! [lib]
-//! proc-macro = true
-//! ```
-//!
-//! ```
-//! # extern crate proc_macro;
-//! #
-//! use proc_macro::TokenStream;
-//! use quote::quote;
-//! use syn::{parse_macro_input, DeriveInput};
-//!
-//! # const IGNORE_TOKENS: &str = stringify! {
-//! #[proc_macro_derive(MyMacro)]
-//! # };
-//! pub fn my_macro(input: TokenStream) -> TokenStream {
-//!     // Parse the input tokens into a syntax tree
-//!     let input = parse_macro_input!(input as DeriveInput);
-//!
-//!     // Build the output, possibly using quasi-quotation
-//!     let expanded = quote! {
-//!         // ...
-//!     };
-//!
-//!     // Hand the output tokens back to the compiler
-//!     TokenStream::from(expanded)
-//! }
-//! ```
-//!
-//! The [`heapsize`] example directory shows a complete working implementation
-//! of a derive macro. The example derives a `HeapSize` trait which computes an
-//! estimate of the amount of heap memory owned by a value.
-//!
-//! [`heapsize`]: https://github.com/dtolnay/syn/tree/master/examples/heapsize
-//!
-//! ```
-//! pub trait HeapSize {
-//!     /// Total number of bytes of heap memory owned by `self`.
-//!     fn heap_size_of_children(&self) -> usize;
-//! }
-//! ```
-//!
-//! The derive macro allows users to write `#[derive(HeapSize)]` on data
-//! structures in their program.
-//!
-//! ```
-//! # const IGNORE_TOKENS: &str = stringify! {
-//! #[derive(HeapSize)]
-//! # };
-//! struct Demo<'a, T: ?Sized> {
-//!     a: Box<T>,
-//!     b: u8,
-//!     c: &'a str,
-//!     d: String,
-//! }
-//! ```
-//!
-//! <p><br></p>
-//!
-//! # Spans and error reporting
-//!
-//! The token-based procedural macro API provides great control over where the
-//! compiler's error messages are displayed in user code. Consider the error the
-//! user sees if one of their field types does not implement `HeapSize`.
-//!
-//! ```
-//! # const IGNORE_TOKENS: &str = stringify! {
-//! #[derive(HeapSize)]
-//! # };
-//! struct Broken {
-//!     ok: String,
-//!     bad: std::thread::Thread,
-//! }
-//! ```
-//!
-//! By tracking span information all the way through the expansion of a
-//! procedural macro as shown in the `heapsize` example, token-based macros in
-//! Syn are able to trigger errors that directly pinpoint the source of the
-//! problem.
-//!
-//! ```text
-//! error[E0277]: the trait bound `std::thread::Thread: HeapSize` is not satisfied
-//!  --> src/main.rs:7:5
-//!   |
-//! 7 |     bad: std::thread::Thread,
-//!   |     ^^^^^^^^^^^^^^^^^^^^^^^^ the trait `HeapSize` is not implemented for `Thread`
-//! ```
-//!
-//! <br>
-//!
-//! # Parsing a custom syntax
-//!
-//! The [`lazy-static`] example directory shows the implementation of a
-//! `functionlike!(...)` procedural macro in which the input tokens are parsed
-//! using Syn's parsing API.
-//!
-//! [`lazy-static`]: https://github.com/dtolnay/syn/tree/master/examples/lazy-static
-//!
-//! The example reimplements the popular `lazy_static` crate from crates.io as a
-//! procedural macro.
-//!
-//! ```
-//! # macro_rules! lazy_static {
-//! #     ($($tt:tt)*) => {}
-//! # }
-//! #
-//! lazy_static! {
-//!     static ref USERNAME: Regex = Regex::new("^[a-z0-9_-]{3,16}$").unwrap();
-//! }
-//! ```
-//!
-//! The implementation shows how to trigger custom warnings and error messages
-//! on the macro input.
-//!
-//! ```text
-//! warning: come on, pick a more creative name
-//!   --> src/main.rs:10:16
-//!    |
-//! 10 |     static ref FOO: String = "lazy_static".to_owned();
-//!    |                ^^^
-//! ```
-//!
-//! <br>
-//!
-//! # Testing
-//!
-//! When testing macros, we often care not just that the macro can be used
-//! successfully but also that when the macro is provided with invalid input it
-//! produces maximally helpful error messages. Consider using the [`trybuild`]
-//! crate to write tests for errors that are emitted by your macro or errors
-//! detected by the Rust compiler in the expanded code following misuse of the
-//! macro. Such tests help avoid regressions from later refactors that
-//! mistakenly make an error no longer trigger or be less helpful than it used
-//! to be.
-//!
-//! [`trybuild`]: https://github.com/dtolnay/trybuild
-//!
-//! <br>
-//!
-//! # Debugging
-//!
-//! When developing a procedural macro it can be helpful to look at what the
-//! generated code looks like. Use `cargo rustc -- -Zunstable-options
-//! --pretty=expanded` or the [`cargo expand`] subcommand.
-//!
-//! [`cargo expand`]: https://github.com/dtolnay/cargo-expand
-//!
-//! To show the expanded code for some crate that uses your procedural macro,
-//! run `cargo expand` from that crate. To show the expanded code for one of
-//! your own test cases, run `cargo expand --test the_test_case` where the last
-//! argument is the name of the test file without the `.rs` extension.
-//!
-//! This write-up by Brandon W Maister discusses debugging in more detail:
-//! [Debugging Rust's new Custom Derive system][debugging].
-//!
-//! [debugging]: https://quodlibetor.github.io/posts/debugging-rusts-new-custom-derive-system/
-//!
-//! <br>
-//!
-//! # Optional features
-//!
-//! Syn puts a lot of functionality behind optional features in order to
-//! optimize compile time for the most common use cases. The following features
-//! are available.
-//!
-//! - **`derive`** *(enabled by default)* — Data structures for representing the
-//!   possible input to a derive macro, including structs and enums and types.
-//! - **`full`** — Data structures for representing the syntax tree of all valid
-//!   Rust source code, including items and expressions.
-//! - **`parsing`** *(enabled by default)* — Ability to parse input tokens into
-//!   a syntax tree node of a chosen type.
-//! - **`printing`** *(enabled by default)* — Ability to print a syntax tree
-//!   node as tokens of Rust source code.
-//! - **`visit`** — Trait for traversing a syntax tree.
-//! - **`visit-mut`** — Trait for traversing and mutating in place a syntax
-//!   tree.
-//! - **`fold`** — Trait for transforming an owned syntax tree.
-//! - **`clone-impls`** *(enabled by default)* — Clone impls for all syntax tree
-//!   types.
-//! - **`extra-traits`** — Debug, Eq, PartialEq, Hash impls for all syntax tree
-//!   types.
-//! - **`proc-macro`** *(enabled by default)* — Runtime dependency on the
-//!   dynamic library libproc_macro from rustc toolchain.
-
-// Syn types in rustdoc of other crates get linked to here.
-#![doc(html_root_url = "https://docs.rs/syn/2.0.48")]
-#![cfg_attr(doc_cfg, feature(doc_cfg))]
-#![deny(unsafe_op_in_unsafe_fn)]
-#![allow(non_camel_case_types)]
-#![allow(
-    clippy::bool_to_int_with_if,
-    clippy::cast_lossless,
-    clippy::cast_possible_truncation,
-    clippy::cast_possible_wrap,
-    clippy::cast_ptr_alignment,
-    clippy::default_trait_access,
-    clippy::derivable_impls,
-    clippy::diverging_sub_expression,
-    clippy::doc_markdown,
-    clippy::expl_impl_clone_on_copy,
-    clippy::explicit_auto_deref,
-    clippy::if_not_else,
-    clippy::inherent_to_string,
-    clippy::into_iter_without_iter,
-    clippy::items_after_statements,
-    clippy::large_enum_variant,
-    clippy::let_underscore_untyped, // https://github.com/rust-lang/rust-clippy/issues/10410
-    clippy::manual_assert,
-    clippy::manual_let_else,
-    clippy::match_like_matches_macro,
-    clippy::match_on_vec_items,
-    clippy::match_same_arms,
-    clippy::match_wildcard_for_single_variants, // clippy bug: https://github.com/rust-lang/rust-clippy/issues/6984
-    clippy::missing_errors_doc,
-    clippy::missing_panics_doc,
-    clippy::module_name_repetitions,
-    clippy::must_use_candidate,
-    clippy::needless_doctest_main,
-    clippy::needless_pass_by_value,
-    clippy::never_loop,
-    clippy::range_plus_one,
-    clippy::redundant_else,
-    clippy::return_self_not_must_use,
-    clippy::similar_names,
-    clippy::single_match_else,
-    clippy::too_many_arguments,
-    clippy::too_many_lines,
-    clippy::trivially_copy_pass_by_ref,
-    clippy::uninhabited_references,
-    clippy::uninlined_format_args,
-    clippy::unnecessary_box_returns,
-    clippy::unnecessary_unwrap,
-    clippy::used_underscore_binding,
-    clippy::wildcard_imports,
-)]
-
-#[cfg(feature = "proc-macro")]
-extern crate proc_macro;
-
-#[macro_use]
-mod macros;
-
-#[cfg(feature = "parsing")]
-#[macro_use]
-mod group;
-
-#[macro_use]
-pub mod token;
-
-#[cfg(any(feature = "full", feature = "derive"))]
-mod attr;
-#[cfg(any(feature = "full", feature = "derive"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-pub use crate::attr::{AttrStyle, Attribute, Meta, MetaList, MetaNameValue};
-
-mod bigint;
-
-#[cfg(feature = "parsing")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-pub mod buffer;
-
-mod custom_keyword;
-
-mod custom_punctuation;
-
-#[cfg(any(feature = "full", feature = "derive"))]
-mod data;
-#[cfg(any(feature = "full", feature = "derive"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-pub use crate::data::{Field, Fields, FieldsNamed, FieldsUnnamed, Variant};
-
-#[cfg(any(feature = "full", feature = "derive"))]
-mod derive;
-#[cfg(feature = "derive")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
-pub use crate::derive::{Data, DataEnum, DataStruct, DataUnion, DeriveInput};
-
-mod drops;
-
-mod error;
-pub use crate::error::{Error, Result};
-
-#[cfg(any(feature = "full", feature = "derive"))]
-mod expr;
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub use crate::expr::{Arm, Label, RangeLimits};
-#[cfg(any(feature = "full", feature = "derive"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-pub use crate::expr::{
-    Expr, ExprBinary, ExprCall, ExprCast, ExprField, ExprIndex, ExprLit, ExprMacro, ExprMethodCall,
-    ExprParen, ExprPath, ExprReference, ExprStruct, ExprUnary, FieldValue, Index, Member,
-};
-#[cfg(any(feature = "full", feature = "derive"))]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub use crate::expr::{
-    ExprArray, ExprAssign, ExprAsync, ExprAwait, ExprBlock, ExprBreak, ExprClosure, ExprConst,
-    ExprContinue, ExprForLoop, ExprGroup, ExprIf, ExprInfer, ExprLet, ExprLoop, ExprMatch,
-    ExprRange, ExprRepeat, ExprReturn, ExprTry, ExprTryBlock, ExprTuple, ExprUnsafe, ExprWhile,
-    ExprYield,
-};
-
-#[cfg(feature = "parsing")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-pub mod ext;
-
-#[cfg(feature = "full")]
-mod file;
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub use crate::file::File;
-
-#[cfg(any(feature = "full", feature = "derive"))]
-mod generics;
-#[cfg(any(feature = "full", feature = "derive"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-pub use crate::generics::{
-    BoundLifetimes, ConstParam, GenericParam, Generics, LifetimeParam, PredicateLifetime,
-    PredicateType, TraitBound, TraitBoundModifier, TypeParam, TypeParamBound, WhereClause,
-    WherePredicate,
-};
-#[cfg(all(any(feature = "full", feature = "derive"), feature = "printing"))]
-#[cfg_attr(
-    doc_cfg,
-    doc(cfg(all(any(feature = "full", feature = "derive"), feature = "printing")))
-)]
-pub use crate::generics::{ImplGenerics, Turbofish, TypeGenerics};
-
-mod ident;
-#[doc(inline)]
-pub use crate::ident::Ident;
-
-#[cfg(feature = "full")]
-mod item;
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub use crate::item::{
-    FnArg, ForeignItem, ForeignItemFn, ForeignItemMacro, ForeignItemStatic, ForeignItemType,
-    ImplItem, ImplItemConst, ImplItemFn, ImplItemMacro, ImplItemType, ImplRestriction, Item,
-    ItemConst, ItemEnum, ItemExternCrate, ItemFn, ItemForeignMod, ItemImpl, ItemMacro, ItemMod,
-    ItemStatic, ItemStruct, ItemTrait, ItemTraitAlias, ItemType, ItemUnion, ItemUse, Receiver,
-    Signature, StaticMutability, TraitItem, TraitItemConst, TraitItemFn, TraitItemMacro,
-    TraitItemType, UseGlob, UseGroup, UseName, UsePath, UseRename, UseTree, Variadic,
-};
-
-mod lifetime;
-#[doc(inline)]
-pub use crate::lifetime::Lifetime;
-
-mod lit;
-#[doc(hidden)] // https://github.com/dtolnay/syn/issues/1566
-pub use crate::lit::StrStyle;
-#[doc(inline)]
-pub use crate::lit::{Lit, LitBool, LitByte, LitByteStr, LitChar, LitFloat, LitInt, LitStr};
-
-#[cfg(feature = "parsing")]
-mod lookahead;
-
-#[cfg(any(feature = "full", feature = "derive"))]
-mod mac;
-#[cfg(any(feature = "full", feature = "derive"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-pub use crate::mac::{Macro, MacroDelimiter};
-
-#[cfg(all(feature = "parsing", any(feature = "full", feature = "derive")))]
-#[cfg_attr(
-    doc_cfg,
-    doc(cfg(all(feature = "parsing", any(feature = "full", feature = "derive"))))
-)]
-pub mod meta;
-
-#[cfg(any(feature = "full", feature = "derive"))]
-mod op;
-#[cfg(any(feature = "full", feature = "derive"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-pub use crate::op::{BinOp, UnOp};
-
-#[cfg(feature = "parsing")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-pub mod parse;
-
-#[cfg(all(feature = "parsing", feature = "proc-macro"))]
-mod parse_macro_input;
-
-#[cfg(all(feature = "parsing", feature = "printing"))]
-mod parse_quote;
-
-#[cfg(feature = "full")]
-mod pat;
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub use crate::expr::{
-    ExprConst as PatConst, ExprLit as PatLit, ExprMacro as PatMacro, ExprPath as PatPath,
-    ExprRange as PatRange,
-};
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub use crate::pat::{
-    FieldPat, Pat, PatIdent, PatOr, PatParen, PatReference, PatRest, PatSlice, PatStruct, PatTuple,
-    PatTupleStruct, PatType, PatWild,
-};
-
-#[cfg(any(feature = "full", feature = "derive"))]
-mod path;
-#[cfg(any(feature = "full", feature = "derive"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-pub use crate::path::{
-    AngleBracketedGenericArguments, AssocConst, AssocType, Constraint, GenericArgument,
-    ParenthesizedGenericArguments, Path, PathArguments, PathSegment, QSelf,
-};
-
-#[cfg(all(any(feature = "full", feature = "derive"), feature = "printing"))]
-mod print;
-
-pub mod punctuated;
-
-#[cfg(any(feature = "full", feature = "derive"))]
-mod restriction;
-#[cfg(any(feature = "full", feature = "derive"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-pub use crate::restriction::{FieldMutability, VisRestricted, Visibility};
-
-mod sealed;
-
-mod span;
-
-#[cfg(all(feature = "parsing", feature = "printing"))]
-#[cfg_attr(doc_cfg, doc(cfg(all(feature = "parsing", feature = "printing"))))]
-pub mod spanned;
-
-#[cfg(feature = "full")]
-mod stmt;
-#[cfg(feature = "full")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-pub use crate::stmt::{Block, Local, LocalInit, Stmt, StmtMacro};
-
-mod thread;
-
-#[cfg(all(any(feature = "full", feature = "derive"), feature = "extra-traits"))]
-mod tt;
-
-#[cfg(any(feature = "full", feature = "derive"))]
-mod ty;
-#[cfg(any(feature = "full", feature = "derive"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-pub use crate::ty::{
-    Abi, BareFnArg, BareVariadic, ReturnType, Type, TypeArray, TypeBareFn, TypeGroup,
-    TypeImplTrait, TypeInfer, TypeMacro, TypeNever, TypeParen, TypePath, TypePtr, TypeReference,
-    TypeSlice, TypeTraitObject, TypeTuple,
-};
-
-#[cfg(all(any(feature = "full", feature = "derive"), feature = "parsing"))]
-mod verbatim;
-
-#[cfg(all(feature = "parsing", feature = "full"))]
-mod whitespace;
-
-mod gen {
-    /// Syntax tree traversal to transform the nodes of an owned syntax tree.
-    ///
-    /// Each method of the [`Fold`] trait is a hook that can be overridden to
-    /// customize the behavior when transforming the corresponding type of node.
-    /// By default, every method recursively visits the substructure of the
-    /// input by invoking the right visitor method of each of its fields.
-    ///
-    /// [`Fold`]: fold::Fold
-    ///
-    /// ```
-    /// # use syn::{Attribute, BinOp, Expr, ExprBinary};
-    /// #
-    /// pub trait Fold {
-    ///     /* ... */
-    ///
-    ///     fn fold_expr_binary(&mut self, node: ExprBinary) -> ExprBinary {
-    ///         fold_expr_binary(self, node)
-    ///     }
-    ///
-    ///     /* ... */
-    ///     # fn fold_attribute(&mut self, node: Attribute) -> Attribute;
-    ///     # fn fold_expr(&mut self, node: Expr) -> Expr;
-    ///     # fn fold_bin_op(&mut self, node: BinOp) -> BinOp;
-    /// }
-    ///
-    /// pub fn fold_expr_binary<V>(v: &mut V, node: ExprBinary) -> ExprBinary
-    /// where
-    ///     V: Fold + ?Sized,
-    /// {
-    ///     ExprBinary {
-    ///         attrs: node
-    ///             .attrs
-    ///             .into_iter()
-    ///             .map(|attr| v.fold_attribute(attr))
-    ///             .collect(),
-    ///         left: Box::new(v.fold_expr(*node.left)),
-    ///         op: v.fold_bin_op(node.op),
-    ///         right: Box::new(v.fold_expr(*node.right)),
-    ///     }
-    /// }
-    ///
-    /// /* ... */
-    /// ```
-    ///
-    /// <br>
-    ///
-    /// # Example
-    ///
-    /// This fold inserts parentheses to fully parenthesizes any expression.
-    ///
-    /// ```
-    /// // [dependencies]
-    /// // quote = "1.0"
-    /// // syn = { version = "2.0", features = ["fold", "full"] }
-    ///
-    /// use quote::quote;
-    /// use syn::fold::{fold_expr, Fold};
-    /// use syn::{token, Expr, ExprParen};
-    ///
-    /// struct ParenthesizeEveryExpr;
-    ///
-    /// impl Fold for ParenthesizeEveryExpr {
-    ///     fn fold_expr(&mut self, expr: Expr) -> Expr {
-    ///         Expr::Paren(ExprParen {
-    ///             attrs: Vec::new(),
-    ///             expr: Box::new(fold_expr(self, expr)),
-    ///             paren_token: token::Paren::default(),
-    ///         })
-    ///     }
-    /// }
-    ///
-    /// fn main() {
-    ///     let code = quote! { a() + b(1) * c.d };
-    ///     let expr: Expr = syn::parse2(code).unwrap();
-    ///     let parenthesized = ParenthesizeEveryExpr.fold_expr(expr);
-    ///     println!("{}", quote!(#parenthesized));
-    ///
-    ///     // Output: (((a)()) + (((b)((1))) * ((c).d)))
-    /// }
-    /// ```
-    #[cfg(feature = "fold")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "fold")))]
-    #[rustfmt::skip]
-    pub mod fold;
-
-    /// Syntax tree traversal to walk a shared borrow of a syntax tree.
-    ///
-    /// Each method of the [`Visit`] trait is a hook that can be overridden to
-    /// customize the behavior when visiting the corresponding type of node. By
-    /// default, every method recursively visits the substructure of the input
-    /// by invoking the right visitor method of each of its fields.
-    ///
-    /// [`Visit`]: visit::Visit
-    ///
-    /// ```
-    /// # use syn::{Attribute, BinOp, Expr, ExprBinary};
-    /// #
-    /// pub trait Visit<'ast> {
-    ///     /* ... */
-    ///
-    ///     fn visit_expr_binary(&mut self, node: &'ast ExprBinary) {
-    ///         visit_expr_binary(self, node);
-    ///     }
-    ///
-    ///     /* ... */
-    ///     # fn visit_attribute(&mut self, node: &'ast Attribute);
-    ///     # fn visit_expr(&mut self, node: &'ast Expr);
-    ///     # fn visit_bin_op(&mut self, node: &'ast BinOp);
-    /// }
-    ///
-    /// pub fn visit_expr_binary<'ast, V>(v: &mut V, node: &'ast ExprBinary)
-    /// where
-    ///     V: Visit<'ast> + ?Sized,
-    /// {
-    ///     for attr in &node.attrs {
-    ///         v.visit_attribute(attr);
-    ///     }
-    ///     v.visit_expr(&*node.left);
-    ///     v.visit_bin_op(&node.op);
-    ///     v.visit_expr(&*node.right);
-    /// }
-    ///
-    /// /* ... */
-    /// ```
-    ///
-    /// <br>
-    ///
-    /// # Example
-    ///
-    /// This visitor will print the name of every freestanding function in the
-    /// syntax tree, including nested functions.
-    ///
-    /// ```
-    /// // [dependencies]
-    /// // quote = "1.0"
-    /// // syn = { version = "2.0", features = ["full", "visit"] }
-    ///
-    /// use quote::quote;
-    /// use syn::visit::{self, Visit};
-    /// use syn::{File, ItemFn};
-    ///
-    /// struct FnVisitor;
-    ///
-    /// impl<'ast> Visit<'ast> for FnVisitor {
-    ///     fn visit_item_fn(&mut self, node: &'ast ItemFn) {
-    ///         println!("Function with name={}", node.sig.ident);
-    ///
-    ///         // Delegate to the default impl to visit any nested functions.
-    ///         visit::visit_item_fn(self, node);
-    ///     }
-    /// }
-    ///
-    /// fn main() {
-    ///     let code = quote! {
-    ///         pub fn f() {
-    ///             fn g() {}
-    ///         }
-    ///     };
-    ///
-    ///     let syntax_tree: File = syn::parse2(code).unwrap();
-    ///     FnVisitor.visit_file(&syntax_tree);
-    /// }
-    /// ```
-    ///
-    /// The `'ast` lifetime on the input references means that the syntax tree
-    /// outlives the complete recursive visit call, so the visitor is allowed to
-    /// hold on to references into the syntax tree.
-    ///
-    /// ```
-    /// use quote::quote;
-    /// use syn::visit::{self, Visit};
-    /// use syn::{File, ItemFn};
-    ///
-    /// struct FnVisitor<'ast> {
-    ///     functions: Vec<&'ast ItemFn>,
-    /// }
-    ///
-    /// impl<'ast> Visit<'ast> for FnVisitor<'ast> {
-    ///     fn visit_item_fn(&mut self, node: &'ast ItemFn) {
-    ///         self.functions.push(node);
-    ///         visit::visit_item_fn(self, node);
-    ///     }
-    /// }
-    ///
-    /// fn main() {
-    ///     let code = quote! {
-    ///         pub fn f() {
-    ///             fn g() {}
-    ///         }
-    ///     };
-    ///
-    ///     let syntax_tree: File = syn::parse2(code).unwrap();
-    ///     let mut visitor = FnVisitor { functions: Vec::new() };
-    ///     visitor.visit_file(&syntax_tree);
-    ///     for f in visitor.functions {
-    ///         println!("Function with name={}", f.sig.ident);
-    ///     }
-    /// }
-    /// ```
-    #[cfg(feature = "visit")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "visit")))]
-    #[rustfmt::skip]
-    pub mod visit;
-
-    /// Syntax tree traversal to mutate an exclusive borrow of a syntax tree in
-    /// place.
-    ///
-    /// Each method of the [`VisitMut`] trait is a hook that can be overridden
-    /// to customize the behavior when mutating the corresponding type of node.
-    /// By default, every method recursively visits the substructure of the
-    /// input by invoking the right visitor method of each of its fields.
-    ///
-    /// [`VisitMut`]: visit_mut::VisitMut
-    ///
-    /// ```
-    /// # use syn::{Attribute, BinOp, Expr, ExprBinary};
-    /// #
-    /// pub trait VisitMut {
-    ///     /* ... */
-    ///
-    ///     fn visit_expr_binary_mut(&mut self, node: &mut ExprBinary) {
-    ///         visit_expr_binary_mut(self, node);
-    ///     }
-    ///
-    ///     /* ... */
-    ///     # fn visit_attribute_mut(&mut self, node: &mut Attribute);
-    ///     # fn visit_expr_mut(&mut self, node: &mut Expr);
-    ///     # fn visit_bin_op_mut(&mut self, node: &mut BinOp);
-    /// }
-    ///
-    /// pub fn visit_expr_binary_mut<V>(v: &mut V, node: &mut ExprBinary)
-    /// where
-    ///     V: VisitMut + ?Sized,
-    /// {
-    ///     for attr in &mut node.attrs {
-    ///         v.visit_attribute_mut(attr);
-    ///     }
-    ///     v.visit_expr_mut(&mut *node.left);
-    ///     v.visit_bin_op_mut(&mut node.op);
-    ///     v.visit_expr_mut(&mut *node.right);
-    /// }
-    ///
-    /// /* ... */
-    /// ```
-    ///
-    /// <br>
-    ///
-    /// # Example
-    ///
-    /// This mut visitor replace occurrences of u256 suffixed integer literals
-    /// like `999u256` with a macro invocation `bigint::u256!(999)`.
-    ///
-    /// ```
-    /// // [dependencies]
-    /// // quote = "1.0"
-    /// // syn = { version = "2.0", features = ["full", "visit-mut"] }
-    ///
-    /// use quote::quote;
-    /// use syn::visit_mut::{self, VisitMut};
-    /// use syn::{parse_quote, Expr, File, Lit, LitInt};
-    ///
-    /// struct BigintReplace;
-    ///
-    /// impl VisitMut for BigintReplace {
-    ///     fn visit_expr_mut(&mut self, node: &mut Expr) {
-    ///         if let Expr::Lit(expr) = &node {
-    ///             if let Lit::Int(int) = &expr.lit {
-    ///                 if int.suffix() == "u256" {
-    ///                     let digits = int.base10_digits();
-    ///                     let unsuffixed: LitInt = syn::parse_str(digits).unwrap();
-    ///                     *node = parse_quote!(bigint::u256!(#unsuffixed));
-    ///                     return;
-    ///                 }
-    ///             }
-    ///         }
-    ///
-    ///         // Delegate to the default impl to visit nested expressions.
-    ///         visit_mut::visit_expr_mut(self, node);
-    ///     }
-    /// }
-    ///
-    /// fn main() {
-    ///     let code = quote! {
-    ///         fn main() {
-    ///             let _ = 999u256;
-    ///         }
-    ///     };
-    ///
-    ///     let mut syntax_tree: File = syn::parse2(code).unwrap();
-    ///     BigintReplace.visit_file_mut(&mut syntax_tree);
-    ///     println!("{}", quote!(#syntax_tree));
-    /// }
-    /// ```
-    #[cfg(feature = "visit-mut")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "visit-mut")))]
-    #[rustfmt::skip]
-    pub mod visit_mut;
-
-    #[cfg(feature = "clone-impls")]
-    #[rustfmt::skip]
-    mod clone;
-
-    #[cfg(feature = "extra-traits")]
-    #[rustfmt::skip]
-    mod debug;
-
-    #[cfg(feature = "extra-traits")]
-    #[rustfmt::skip]
-    mod eq;
-
-    #[cfg(feature = "extra-traits")]
-    #[rustfmt::skip]
-    mod hash;
-
-    #[cfg(any(feature = "full", feature = "derive"))]
-    #[path = "../gen_helper.rs"]
-    mod helper;
-}
-
-#[cfg(feature = "fold")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "fold")))]
-pub use crate::gen::fold;
-
-#[cfg(feature = "visit")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "visit")))]
-pub use crate::gen::visit;
-
-#[cfg(feature = "visit-mut")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "visit-mut")))]
-pub use crate::gen::visit_mut;
-
-// Not public API.
-#[doc(hidden)]
-#[path = "export.rs"]
-pub mod __private;
-
-/// Parse tokens of source code into the chosen syntax tree node.
-///
-/// This is preferred over parsing a string because tokens are able to preserve
-/// information about where in the user's code they were originally written (the
-/// "span" of the token), possibly allowing the compiler to produce better error
-/// messages.
-///
-/// This function parses a `proc_macro::TokenStream` which is the type used for
-/// interop with the compiler in a procedural macro. To parse a
-/// `proc_macro2::TokenStream`, use [`syn::parse2`] instead.
-///
-/// [`syn::parse2`]: parse2
-///
-/// # Examples
-///
-/// ```
-/// # extern crate proc_macro;
-/// #
-/// use proc_macro::TokenStream;
-/// use quote::quote;
-/// use syn::DeriveInput;
-///
-/// # const IGNORE_TOKENS: &str = stringify! {
-/// #[proc_macro_derive(MyMacro)]
-/// # };
-/// pub fn my_macro(input: TokenStream) -> TokenStream {
-///     // Parse the tokens into a syntax tree
-///     let ast: DeriveInput = syn::parse(input).unwrap();
-///
-///     // Build the output, possibly using quasi-quotation
-///     let expanded = quote! {
-///         /* ... */
-///     };
-///
-///     // Convert into a token stream and return it
-///     expanded.into()
-/// }
-/// ```
-#[cfg(all(feature = "parsing", feature = "proc-macro"))]
-#[cfg_attr(doc_cfg, doc(cfg(all(feature = "parsing", feature = "proc-macro"))))]
-pub fn parse<T: parse::Parse>(tokens: proc_macro::TokenStream) -> Result<T> {
-    parse::Parser::parse(T::parse, tokens)
-}
-
-/// Parse a proc-macro2 token stream into the chosen syntax tree node.
-///
-/// This function will check that the input is fully parsed. If there are
-/// any unparsed tokens at the end of the stream, an error is returned.
-///
-/// This function parses a `proc_macro2::TokenStream` which is commonly useful
-/// when the input comes from a node of the Syn syntax tree, for example the
-/// body tokens of a [`Macro`] node. When in a procedural macro parsing the
-/// `proc_macro::TokenStream` provided by the compiler, use [`syn::parse`]
-/// instead.
-///
-/// [`syn::parse`]: parse()
-#[cfg(feature = "parsing")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-pub fn parse2<T: parse::Parse>(tokens: proc_macro2::TokenStream) -> Result<T> {
-    parse::Parser::parse2(T::parse, tokens)
-}
-
-/// Parse a string of Rust code into the chosen syntax tree node.
-///
-/// # Hygiene
-///
-/// Every span in the resulting syntax tree will be set to resolve at the macro
-/// call site.
-///
-/// # Examples
-///
-/// ```
-/// use syn::{Expr, Result};
-///
-/// fn run() -> Result<()> {
-///     let code = "assert_eq!(u8::max_value(), 255)";
-///     let expr = syn::parse_str::<Expr>(code)?;
-///     println!("{:#?}", expr);
-///     Ok(())
-/// }
-/// #
-/// # run().unwrap();
-/// ```
-#[cfg(feature = "parsing")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-pub fn parse_str<T: parse::Parse>(s: &str) -> Result<T> {
-    parse::Parser::parse_str(T::parse, s)
-}
-
-// FIXME the name parse_file makes it sound like you might pass in a path to a
-// file, rather than the content.
-/// Parse the content of a file of Rust code.
-///
-/// This is different from `syn::parse_str::<File>(content)` in two ways:
-///
-/// - It discards a leading byte order mark `\u{FEFF}` if the file has one.
-/// - It preserves the shebang line of the file, such as `#!/usr/bin/env rustx`.
-///
-/// If present, either of these would be an error using `from_str`.
-///
-/// # Examples
-///
-/// ```no_run
-/// use std::error::Error;
-/// use std::fs::File;
-/// use std::io::Read;
-///
-/// fn run() -> Result<(), Box<dyn Error>> {
-///     let mut file = File::open("path/to/code.rs")?;
-///     let mut content = String::new();
-///     file.read_to_string(&mut content)?;
-///
-///     let ast = syn::parse_file(&content)?;
-///     if let Some(shebang) = ast.shebang {
-///         println!("{}", shebang);
-///     }
-///     println!("{} items", ast.items.len());
-///
-///     Ok(())
-/// }
-/// #
-/// # run().unwrap();
-/// ```
-#[cfg(all(feature = "parsing", feature = "full"))]
-#[cfg_attr(doc_cfg, doc(cfg(all(feature = "parsing", feature = "full"))))]
-pub fn parse_file(mut content: &str) -> Result<File> {
-    // Strip the BOM if it is present
-    const BOM: &str = "\u{feff}";
-    if content.starts_with(BOM) {
-        content = &content[BOM.len()..];
-    }
-
-    let mut shebang = None;
-    if content.starts_with("#!") {
-        let rest = whitespace::skip(&content[2..]);
-        if !rest.starts_with('[') {
-            if let Some(idx) = content.find('\n') {
-                shebang = Some(content[..idx].to_string());
-                content = &content[idx..];
-            } else {
-                shebang = Some(content.to_string());
-                content = "";
-            }
-        }
-    }
-
-    let mut file: File = parse_str(content)?;
-    file.shebang = shebang;
-    Ok(file)
-}
diff --git a/vendor/syn/src/lifetime.rs b/vendor/syn/src/lifetime.rs
deleted file mode 100644
index 29f4cfd..0000000
--- a/vendor/syn/src/lifetime.rs
+++ /dev/null
@@ -1,156 +0,0 @@
-use proc_macro2::{Ident, Span};
-use std::cmp::Ordering;
-use std::fmt::{self, Display};
-use std::hash::{Hash, Hasher};
-
-#[cfg(feature = "parsing")]
-use crate::lookahead;
-
-/// A Rust lifetime: `'a`.
-///
-/// Lifetime names must conform to the following rules:
-///
-/// - Must start with an apostrophe.
-/// - Must not consist of just an apostrophe: `'`.
-/// - Character after the apostrophe must be `_` or a Unicode code point with
-///   the XID_Start property.
-/// - All following characters must be Unicode code points with the XID_Continue
-///   property.
-pub struct Lifetime {
-    pub apostrophe: Span,
-    pub ident: Ident,
-}
-
-impl Lifetime {
-    /// # Panics
-    ///
-    /// Panics if the lifetime does not conform to the bulleted rules above.
-    ///
-    /// # Invocation
-    ///
-    /// ```
-    /// # use proc_macro2::Span;
-    /// # use syn::Lifetime;
-    /// #
-    /// # fn f() -> Lifetime {
-    /// Lifetime::new("'a", Span::call_site())
-    /// # }
-    /// ```
-    pub fn new(symbol: &str, span: Span) -> Self {
-        if !symbol.starts_with('\'') {
-            panic!(
-                "lifetime name must start with apostrophe as in \"'a\", got {:?}",
-                symbol
-            );
-        }
-
-        if symbol == "'" {
-            panic!("lifetime name must not be empty");
-        }
-
-        if !crate::ident::xid_ok(&symbol[1..]) {
-            panic!("{:?} is not a valid lifetime name", symbol);
-        }
-
-        Lifetime {
-            apostrophe: span,
-            ident: Ident::new(&symbol[1..], span),
-        }
-    }
-
-    pub fn span(&self) -> Span {
-        self.apostrophe
-            .join(self.ident.span())
-            .unwrap_or(self.apostrophe)
-    }
-
-    pub fn set_span(&mut self, span: Span) {
-        self.apostrophe = span;
-        self.ident.set_span(span);
-    }
-}
-
-impl Display for Lifetime {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        "'".fmt(formatter)?;
-        self.ident.fmt(formatter)
-    }
-}
-
-impl Clone for Lifetime {
-    fn clone(&self) -> Self {
-        Lifetime {
-            apostrophe: self.apostrophe,
-            ident: self.ident.clone(),
-        }
-    }
-}
-
-impl PartialEq for Lifetime {
-    fn eq(&self, other: &Lifetime) -> bool {
-        self.ident.eq(&other.ident)
-    }
-}
-
-impl Eq for Lifetime {}
-
-impl PartialOrd for Lifetime {
-    fn partial_cmp(&self, other: &Lifetime) -> Option<Ordering> {
-        Some(self.cmp(other))
-    }
-}
-
-impl Ord for Lifetime {
-    fn cmp(&self, other: &Lifetime) -> Ordering {
-        self.ident.cmp(&other.ident)
-    }
-}
-
-impl Hash for Lifetime {
-    fn hash<H: Hasher>(&self, h: &mut H) {
-        self.ident.hash(h);
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub_if_not_doc! {
-    #[doc(hidden)]
-    #[allow(non_snake_case)]
-    pub fn Lifetime(marker: lookahead::TokenMarker) -> Lifetime {
-        match marker {}
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::*;
-    use crate::parse::{Parse, ParseStream, Result};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Lifetime {
-        fn parse(input: ParseStream) -> Result<Self> {
-            input.step(|cursor| {
-                cursor
-                    .lifetime()
-                    .ok_or_else(|| cursor.error("expected lifetime"))
-            })
-        }
-    }
-}
-
-#[cfg(feature = "printing")]
-mod printing {
-    use super::*;
-    use proc_macro2::{Punct, Spacing, TokenStream};
-    use quote::{ToTokens, TokenStreamExt};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Lifetime {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            let mut apostrophe = Punct::new('\'', Spacing::Joint);
-            apostrophe.set_span(self.apostrophe);
-            tokens.append(apostrophe);
-            self.ident.to_tokens(tokens);
-        }
-    }
-}
diff --git a/vendor/syn/src/lit.rs b/vendor/syn/src/lit.rs
deleted file mode 100644
index 24524bb..0000000
--- a/vendor/syn/src/lit.rs
+++ /dev/null
@@ -1,1651 +0,0 @@
-#[cfg(feature = "parsing")]
-use crate::lookahead;
-#[cfg(feature = "parsing")]
-use crate::parse::{Parse, Parser};
-use crate::{Error, Result};
-use proc_macro2::{Ident, Literal, Span};
-#[cfg(feature = "parsing")]
-use proc_macro2::{TokenStream, TokenTree};
-use std::fmt::{self, Display};
-#[cfg(feature = "extra-traits")]
-use std::hash::{Hash, Hasher};
-use std::str::{self, FromStr};
-
-ast_enum_of_structs! {
-    /// A Rust literal such as a string or integer or boolean.
-    ///
-    /// # Syntax tree enum
-    ///
-    /// This type is a [syntax tree enum].
-    ///
-    /// [syntax tree enum]: crate::Expr#syntax-tree-enums
-    #[non_exhaustive]
-    pub enum Lit {
-        /// A UTF-8 string literal: `"foo"`.
-        Str(LitStr),
-
-        /// A byte string literal: `b"foo"`.
-        ByteStr(LitByteStr),
-
-        /// A byte literal: `b'f'`.
-        Byte(LitByte),
-
-        /// A character literal: `'a'`.
-        Char(LitChar),
-
-        /// An integer literal: `1` or `1u16`.
-        Int(LitInt),
-
-        /// A floating point literal: `1f64` or `1.0e10f64`.
-        ///
-        /// Must be finite. May not be infinite or NaN.
-        Float(LitFloat),
-
-        /// A boolean literal: `true` or `false`.
-        Bool(LitBool),
-
-        /// A raw token literal not interpreted by Syn.
-        Verbatim(Literal),
-    }
-}
-
-ast_struct! {
-    /// A UTF-8 string literal: `"foo"`.
-    pub struct LitStr {
-        repr: Box<LitRepr>,
-    }
-}
-
-ast_struct! {
-    /// A byte string literal: `b"foo"`.
-    pub struct LitByteStr {
-        repr: Box<LitRepr>,
-    }
-}
-
-ast_struct! {
-    /// A byte literal: `b'f'`.
-    pub struct LitByte {
-        repr: Box<LitRepr>,
-    }
-}
-
-ast_struct! {
-    /// A character literal: `'a'`.
-    pub struct LitChar {
-        repr: Box<LitRepr>,
-    }
-}
-
-struct LitRepr {
-    token: Literal,
-    suffix: Box<str>,
-}
-
-ast_struct! {
-    /// An integer literal: `1` or `1u16`.
-    pub struct LitInt {
-        repr: Box<LitIntRepr>,
-    }
-}
-
-struct LitIntRepr {
-    token: Literal,
-    digits: Box<str>,
-    suffix: Box<str>,
-}
-
-ast_struct! {
-    /// A floating point literal: `1f64` or `1.0e10f64`.
-    ///
-    /// Must be finite. May not be infinite or NaN.
-    pub struct LitFloat {
-        repr: Box<LitFloatRepr>,
-    }
-}
-
-struct LitFloatRepr {
-    token: Literal,
-    digits: Box<str>,
-    suffix: Box<str>,
-}
-
-ast_struct! {
-    /// A boolean literal: `true` or `false`.
-    pub struct LitBool {
-        pub value: bool,
-        pub span: Span,
-    }
-}
-
-impl LitStr {
-    pub fn new(value: &str, span: Span) -> Self {
-        let mut token = Literal::string(value);
-        token.set_span(span);
-        LitStr {
-            repr: Box::new(LitRepr {
-                token,
-                suffix: Box::<str>::default(),
-            }),
-        }
-    }
-
-    pub fn value(&self) -> String {
-        let repr = self.repr.token.to_string();
-        let (value, _suffix) = value::parse_lit_str(&repr);
-        String::from(value)
-    }
-
-    /// Parse a syntax tree node from the content of this string literal.
-    ///
-    /// All spans in the syntax tree will point to the span of this `LitStr`.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use syn::{Attribute, Error, Expr, Lit, Meta, Path, Result};
-    ///
-    /// // Parses the path from an attribute that looks like:
-    /// //
-    /// //     #[path = "a::b::c"]
-    /// //
-    /// // or returns `None` if the input is some other attribute.
-    /// fn get_path(attr: &Attribute) -> Result<Option<Path>> {
-    ///     if !attr.path().is_ident("path") {
-    ///         return Ok(None);
-    ///     }
-    ///
-    ///     if let Meta::NameValue(meta) = &attr.meta {
-    ///         if let Expr::Lit(expr) = &meta.value {
-    ///             if let Lit::Str(lit_str) = &expr.lit {
-    ///                 return lit_str.parse().map(Some);
-    ///             }
-    ///         }
-    ///     }
-    ///
-    ///     let message = "expected #[path = \"...\"]";
-    ///     Err(Error::new_spanned(attr, message))
-    /// }
-    /// ```
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse<T: Parse>(&self) -> Result<T> {
-        self.parse_with(T::parse)
-    }
-
-    /// Invoke parser on the content of this string literal.
-    ///
-    /// All spans in the syntax tree will point to the span of this `LitStr`.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// # use proc_macro2::Span;
-    /// # use syn::{LitStr, Result};
-    /// #
-    /// # fn main() -> Result<()> {
-    /// #     let lit_str = LitStr::new("a::b::c", Span::call_site());
-    /// #
-    /// #     const IGNORE: &str = stringify! {
-    /// let lit_str: LitStr = /* ... */;
-    /// #     };
-    ///
-    /// // Parse a string literal like "a::b::c" into a Path, not allowing
-    /// // generic arguments on any of the path segments.
-    /// let basic_path = lit_str.parse_with(syn::Path::parse_mod_style)?;
-    /// #
-    /// #     Ok(())
-    /// # }
-    /// ```
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse_with<F: Parser>(&self, parser: F) -> Result<F::Output> {
-        use proc_macro2::Group;
-
-        // Token stream with every span replaced by the given one.
-        fn respan_token_stream(stream: TokenStream, span: Span) -> TokenStream {
-            stream
-                .into_iter()
-                .map(|token| respan_token_tree(token, span))
-                .collect()
-        }
-
-        // Token tree with every span replaced by the given one.
-        fn respan_token_tree(mut token: TokenTree, span: Span) -> TokenTree {
-            match &mut token {
-                TokenTree::Group(g) => {
-                    let stream = respan_token_stream(g.stream(), span);
-                    *g = Group::new(g.delimiter(), stream);
-                    g.set_span(span);
-                }
-                other => other.set_span(span),
-            }
-            token
-        }
-
-        // Parse string literal into a token stream with every span equal to the
-        // original literal's span.
-        let mut tokens = TokenStream::from_str(&self.value())?;
-        tokens = respan_token_stream(tokens, self.span());
-
-        let result = parser.parse2(tokens)?;
-
-        let suffix = self.suffix();
-        if !suffix.is_empty() {
-            return Err(Error::new(
-                self.span(),
-                format!("unexpected suffix `{}` on string literal", suffix),
-            ));
-        }
-
-        Ok(result)
-    }
-
-    pub fn span(&self) -> Span {
-        self.repr.token.span()
-    }
-
-    pub fn set_span(&mut self, span: Span) {
-        self.repr.token.set_span(span);
-    }
-
-    pub fn suffix(&self) -> &str {
-        &self.repr.suffix
-    }
-
-    pub fn token(&self) -> Literal {
-        self.repr.token.clone()
-    }
-}
-
-impl LitByteStr {
-    pub fn new(value: &[u8], span: Span) -> Self {
-        let mut token = Literal::byte_string(value);
-        token.set_span(span);
-        LitByteStr {
-            repr: Box::new(LitRepr {
-                token,
-                suffix: Box::<str>::default(),
-            }),
-        }
-    }
-
-    pub fn value(&self) -> Vec<u8> {
-        let repr = self.repr.token.to_string();
-        let (value, _suffix) = value::parse_lit_byte_str(&repr);
-        value
-    }
-
-    pub fn span(&self) -> Span {
-        self.repr.token.span()
-    }
-
-    pub fn set_span(&mut self, span: Span) {
-        self.repr.token.set_span(span);
-    }
-
-    pub fn suffix(&self) -> &str {
-        &self.repr.suffix
-    }
-
-    pub fn token(&self) -> Literal {
-        self.repr.token.clone()
-    }
-}
-
-impl LitByte {
-    pub fn new(value: u8, span: Span) -> Self {
-        let mut token = Literal::u8_suffixed(value);
-        token.set_span(span);
-        LitByte {
-            repr: Box::new(LitRepr {
-                token,
-                suffix: Box::<str>::default(),
-            }),
-        }
-    }
-
-    pub fn value(&self) -> u8 {
-        let repr = self.repr.token.to_string();
-        let (value, _suffix) = value::parse_lit_byte(&repr);
-        value
-    }
-
-    pub fn span(&self) -> Span {
-        self.repr.token.span()
-    }
-
-    pub fn set_span(&mut self, span: Span) {
-        self.repr.token.set_span(span);
-    }
-
-    pub fn suffix(&self) -> &str {
-        &self.repr.suffix
-    }
-
-    pub fn token(&self) -> Literal {
-        self.repr.token.clone()
-    }
-}
-
-impl LitChar {
-    pub fn new(value: char, span: Span) -> Self {
-        let mut token = Literal::character(value);
-        token.set_span(span);
-        LitChar {
-            repr: Box::new(LitRepr {
-                token,
-                suffix: Box::<str>::default(),
-            }),
-        }
-    }
-
-    pub fn value(&self) -> char {
-        let repr = self.repr.token.to_string();
-        let (value, _suffix) = value::parse_lit_char(&repr);
-        value
-    }
-
-    pub fn span(&self) -> Span {
-        self.repr.token.span()
-    }
-
-    pub fn set_span(&mut self, span: Span) {
-        self.repr.token.set_span(span);
-    }
-
-    pub fn suffix(&self) -> &str {
-        &self.repr.suffix
-    }
-
-    pub fn token(&self) -> Literal {
-        self.repr.token.clone()
-    }
-}
-
-impl LitInt {
-    pub fn new(repr: &str, span: Span) -> Self {
-        let (digits, suffix) = match value::parse_lit_int(repr) {
-            Some(parse) => parse,
-            None => panic!("Not an integer literal: `{}`", repr),
-        };
-
-        let mut token: Literal = repr.parse().unwrap();
-        token.set_span(span);
-        LitInt {
-            repr: Box::new(LitIntRepr {
-                token,
-                digits,
-                suffix,
-            }),
-        }
-    }
-
-    pub fn base10_digits(&self) -> &str {
-        &self.repr.digits
-    }
-
-    /// Parses the literal into a selected number type.
-    ///
-    /// This is equivalent to `lit.base10_digits().parse()` except that the
-    /// resulting errors will be correctly spanned to point to the literal token
-    /// in the macro input.
-    ///
-    /// ```
-    /// use syn::LitInt;
-    /// use syn::parse::{Parse, ParseStream, Result};
-    ///
-    /// struct Port {
-    ///     value: u16,
-    /// }
-    ///
-    /// impl Parse for Port {
-    ///     fn parse(input: ParseStream) -> Result<Self> {
-    ///         let lit: LitInt = input.parse()?;
-    ///         let value = lit.base10_parse::<u16>()?;
-    ///         Ok(Port { value })
-    ///     }
-    /// }
-    /// ```
-    pub fn base10_parse<N>(&self) -> Result<N>
-    where
-        N: FromStr,
-        N::Err: Display,
-    {
-        self.base10_digits()
-            .parse()
-            .map_err(|err| Error::new(self.span(), err))
-    }
-
-    pub fn suffix(&self) -> &str {
-        &self.repr.suffix
-    }
-
-    pub fn span(&self) -> Span {
-        self.repr.token.span()
-    }
-
-    pub fn set_span(&mut self, span: Span) {
-        self.repr.token.set_span(span);
-    }
-
-    pub fn token(&self) -> Literal {
-        self.repr.token.clone()
-    }
-}
-
-impl From<Literal> for LitInt {
-    fn from(token: Literal) -> Self {
-        let repr = token.to_string();
-        if let Some((digits, suffix)) = value::parse_lit_int(&repr) {
-            LitInt {
-                repr: Box::new(LitIntRepr {
-                    token,
-                    digits,
-                    suffix,
-                }),
-            }
-        } else {
-            panic!("Not an integer literal: `{}`", repr);
-        }
-    }
-}
-
-impl Display for LitInt {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        self.repr.token.fmt(formatter)
-    }
-}
-
-impl LitFloat {
-    pub fn new(repr: &str, span: Span) -> Self {
-        let (digits, suffix) = match value::parse_lit_float(repr) {
-            Some(parse) => parse,
-            None => panic!("Not a float literal: `{}`", repr),
-        };
-
-        let mut token: Literal = repr.parse().unwrap();
-        token.set_span(span);
-        LitFloat {
-            repr: Box::new(LitFloatRepr {
-                token,
-                digits,
-                suffix,
-            }),
-        }
-    }
-
-    pub fn base10_digits(&self) -> &str {
-        &self.repr.digits
-    }
-
-    pub fn base10_parse<N>(&self) -> Result<N>
-    where
-        N: FromStr,
-        N::Err: Display,
-    {
-        self.base10_digits()
-            .parse()
-            .map_err(|err| Error::new(self.span(), err))
-    }
-
-    pub fn suffix(&self) -> &str {
-        &self.repr.suffix
-    }
-
-    pub fn span(&self) -> Span {
-        self.repr.token.span()
-    }
-
-    pub fn set_span(&mut self, span: Span) {
-        self.repr.token.set_span(span);
-    }
-
-    pub fn token(&self) -> Literal {
-        self.repr.token.clone()
-    }
-}
-
-impl From<Literal> for LitFloat {
-    fn from(token: Literal) -> Self {
-        let repr = token.to_string();
-        if let Some((digits, suffix)) = value::parse_lit_float(&repr) {
-            LitFloat {
-                repr: Box::new(LitFloatRepr {
-                    token,
-                    digits,
-                    suffix,
-                }),
-            }
-        } else {
-            panic!("Not a float literal: `{}`", repr);
-        }
-    }
-}
-
-impl Display for LitFloat {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        self.repr.token.fmt(formatter)
-    }
-}
-
-impl LitBool {
-    pub fn new(value: bool, span: Span) -> Self {
-        LitBool { value, span }
-    }
-
-    pub fn value(&self) -> bool {
-        self.value
-    }
-
-    pub fn span(&self) -> Span {
-        self.span
-    }
-
-    pub fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-
-    pub fn token(&self) -> Ident {
-        let s = if self.value { "true" } else { "false" };
-        Ident::new(s, self.span)
-    }
-}
-
-#[cfg(feature = "extra-traits")]
-mod debug_impls {
-    use super::*;
-    use std::fmt::{self, Debug};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-    impl Debug for LitStr {
-        fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-            impl LitStr {
-                pub(crate) fn debug(
-                    &self,
-                    formatter: &mut fmt::Formatter,
-                    name: &str,
-                ) -> fmt::Result {
-                    formatter
-                        .debug_struct(name)
-                        .field("token", &format_args!("{}", self.repr.token))
-                        .finish()
-                }
-            }
-            self.debug(formatter, "LitStr")
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-    impl Debug for LitByteStr {
-        fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-            impl LitByteStr {
-                pub(crate) fn debug(
-                    &self,
-                    formatter: &mut fmt::Formatter,
-                    name: &str,
-                ) -> fmt::Result {
-                    formatter
-                        .debug_struct(name)
-                        .field("token", &format_args!("{}", self.repr.token))
-                        .finish()
-                }
-            }
-            self.debug(formatter, "LitByteStr")
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-    impl Debug for LitByte {
-        fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-            impl LitByte {
-                pub(crate) fn debug(
-                    &self,
-                    formatter: &mut fmt::Formatter,
-                    name: &str,
-                ) -> fmt::Result {
-                    formatter
-                        .debug_struct(name)
-                        .field("token", &format_args!("{}", self.repr.token))
-                        .finish()
-                }
-            }
-            self.debug(formatter, "LitByte")
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-    impl Debug for LitChar {
-        fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-            impl LitChar {
-                pub(crate) fn debug(
-                    &self,
-                    formatter: &mut fmt::Formatter,
-                    name: &str,
-                ) -> fmt::Result {
-                    formatter
-                        .debug_struct(name)
-                        .field("token", &format_args!("{}", self.repr.token))
-                        .finish()
-                }
-            }
-            self.debug(formatter, "LitChar")
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-    impl Debug for LitInt {
-        fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-            impl LitInt {
-                pub(crate) fn debug(
-                    &self,
-                    formatter: &mut fmt::Formatter,
-                    name: &str,
-                ) -> fmt::Result {
-                    formatter
-                        .debug_struct(name)
-                        .field("token", &format_args!("{}", self.repr.token))
-                        .finish()
-                }
-            }
-            self.debug(formatter, "LitInt")
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-    impl Debug for LitFloat {
-        fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-            impl LitFloat {
-                pub(crate) fn debug(
-                    &self,
-                    formatter: &mut fmt::Formatter,
-                    name: &str,
-                ) -> fmt::Result {
-                    formatter
-                        .debug_struct(name)
-                        .field("token", &format_args!("{}", self.repr.token))
-                        .finish()
-                }
-            }
-            self.debug(formatter, "LitFloat")
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-    impl Debug for LitBool {
-        fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-            impl LitBool {
-                pub(crate) fn debug(
-                    &self,
-                    formatter: &mut fmt::Formatter,
-                    name: &str,
-                ) -> fmt::Result {
-                    formatter
-                        .debug_struct(name)
-                        .field("value", &self.value)
-                        .finish()
-                }
-            }
-            self.debug(formatter, "LitBool")
-        }
-    }
-}
-
-#[cfg(feature = "clone-impls")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for LitRepr {
-    fn clone(&self) -> Self {
-        LitRepr {
-            token: self.token.clone(),
-            suffix: self.suffix.clone(),
-        }
-    }
-}
-
-#[cfg(feature = "clone-impls")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for LitIntRepr {
-    fn clone(&self) -> Self {
-        LitIntRepr {
-            token: self.token.clone(),
-            digits: self.digits.clone(),
-            suffix: self.suffix.clone(),
-        }
-    }
-}
-
-#[cfg(feature = "clone-impls")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for LitFloatRepr {
-    fn clone(&self) -> Self {
-        LitFloatRepr {
-            token: self.token.clone(),
-            digits: self.digits.clone(),
-            suffix: self.suffix.clone(),
-        }
-    }
-}
-
-macro_rules! lit_extra_traits {
-    ($ty:ident) => {
-        #[cfg(feature = "clone-impls")]
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-        impl Clone for $ty {
-            fn clone(&self) -> Self {
-                $ty {
-                    repr: self.repr.clone(),
-                }
-            }
-        }
-
-        #[cfg(feature = "extra-traits")]
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-        impl PartialEq for $ty {
-            fn eq(&self, other: &Self) -> bool {
-                self.repr.token.to_string() == other.repr.token.to_string()
-            }
-        }
-
-        #[cfg(feature = "extra-traits")]
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-        impl Hash for $ty {
-            fn hash<H>(&self, state: &mut H)
-            where
-                H: Hasher,
-            {
-                self.repr.token.to_string().hash(state);
-            }
-        }
-
-        #[cfg(feature = "parsing")]
-        pub_if_not_doc! {
-            #[doc(hidden)]
-            #[allow(non_snake_case)]
-            pub fn $ty(marker: lookahead::TokenMarker) -> $ty {
-                match marker {}
-            }
-        }
-    };
-}
-
-lit_extra_traits!(LitStr);
-lit_extra_traits!(LitByteStr);
-lit_extra_traits!(LitByte);
-lit_extra_traits!(LitChar);
-lit_extra_traits!(LitInt);
-lit_extra_traits!(LitFloat);
-
-#[cfg(feature = "parsing")]
-pub_if_not_doc! {
-    #[doc(hidden)]
-    #[allow(non_snake_case)]
-    pub fn LitBool(marker: lookahead::TokenMarker) -> LitBool {
-        match marker {}
-    }
-}
-
-/// The style of a string literal, either plain quoted or a raw string like
-/// `r##"data"##`.
-#[doc(hidden)] // https://github.com/dtolnay/syn/issues/1566
-pub enum StrStyle {
-    /// An ordinary string like `"data"`.
-    Cooked,
-    /// A raw string like `r##"data"##`.
-    ///
-    /// The unsigned integer is the number of `#` symbols used.
-    Raw(usize),
-}
-
-#[cfg(feature = "parsing")]
-pub_if_not_doc! {
-    #[doc(hidden)]
-    #[allow(non_snake_case)]
-    pub fn Lit(marker: lookahead::TokenMarker) -> Lit {
-        match marker {}
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::*;
-    use crate::buffer::Cursor;
-    use crate::parse::{Parse, ParseStream, Result};
-    use proc_macro2::Punct;
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Lit {
-        fn parse(input: ParseStream) -> Result<Self> {
-            input.step(|cursor| {
-                if let Some((lit, rest)) = cursor.literal() {
-                    return Ok((Lit::new(lit), rest));
-                }
-
-                if let Some((ident, rest)) = cursor.ident() {
-                    let value = ident == "true";
-                    if value || ident == "false" {
-                        let lit_bool = LitBool {
-                            value,
-                            span: ident.span(),
-                        };
-                        return Ok((Lit::Bool(lit_bool), rest));
-                    }
-                }
-
-                if let Some((punct, rest)) = cursor.punct() {
-                    if punct.as_char() == '-' {
-                        if let Some((lit, rest)) = parse_negative_lit(punct, rest) {
-                            return Ok((lit, rest));
-                        }
-                    }
-                }
-
-                Err(cursor.error("expected literal"))
-            })
-        }
-    }
-
-    fn parse_negative_lit(neg: Punct, cursor: Cursor) -> Option<(Lit, Cursor)> {
-        let (lit, rest) = cursor.literal()?;
-
-        let mut span = neg.span();
-        span = span.join(lit.span()).unwrap_or(span);
-
-        let mut repr = lit.to_string();
-        repr.insert(0, '-');
-
-        if let Some((digits, suffix)) = value::parse_lit_int(&repr) {
-            let mut token: Literal = repr.parse().unwrap();
-            token.set_span(span);
-            return Some((
-                Lit::Int(LitInt {
-                    repr: Box::new(LitIntRepr {
-                        token,
-                        digits,
-                        suffix,
-                    }),
-                }),
-                rest,
-            ));
-        }
-
-        let (digits, suffix) = value::parse_lit_float(&repr)?;
-        let mut token: Literal = repr.parse().unwrap();
-        token.set_span(span);
-        Some((
-            Lit::Float(LitFloat {
-                repr: Box::new(LitFloatRepr {
-                    token,
-                    digits,
-                    suffix,
-                }),
-            }),
-            rest,
-        ))
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for LitStr {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let head = input.fork();
-            match input.parse() {
-                Ok(Lit::Str(lit)) => Ok(lit),
-                _ => Err(head.error("expected string literal")),
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for LitByteStr {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let head = input.fork();
-            match input.parse() {
-                Ok(Lit::ByteStr(lit)) => Ok(lit),
-                _ => Err(head.error("expected byte string literal")),
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for LitByte {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let head = input.fork();
-            match input.parse() {
-                Ok(Lit::Byte(lit)) => Ok(lit),
-                _ => Err(head.error("expected byte literal")),
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for LitChar {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let head = input.fork();
-            match input.parse() {
-                Ok(Lit::Char(lit)) => Ok(lit),
-                _ => Err(head.error("expected character literal")),
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for LitInt {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let head = input.fork();
-            match input.parse() {
-                Ok(Lit::Int(lit)) => Ok(lit),
-                _ => Err(head.error("expected integer literal")),
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for LitFloat {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let head = input.fork();
-            match input.parse() {
-                Ok(Lit::Float(lit)) => Ok(lit),
-                _ => Err(head.error("expected floating point literal")),
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for LitBool {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let head = input.fork();
-            match input.parse() {
-                Ok(Lit::Bool(lit)) => Ok(lit),
-                _ => Err(head.error("expected boolean literal")),
-            }
-        }
-    }
-}
-
-#[cfg(feature = "printing")]
-mod printing {
-    use super::*;
-    use proc_macro2::TokenStream;
-    use quote::{ToTokens, TokenStreamExt};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for LitStr {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.repr.token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for LitByteStr {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.repr.token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for LitByte {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.repr.token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for LitChar {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.repr.token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for LitInt {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.repr.token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for LitFloat {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.repr.token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for LitBool {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append(self.token());
-        }
-    }
-}
-
-mod value {
-    use super::*;
-    use crate::bigint::BigInt;
-    use std::char;
-    use std::ops::{Index, RangeFrom};
-
-    impl Lit {
-        /// Interpret a Syn literal from a proc-macro2 literal.
-        pub fn new(token: Literal) -> Self {
-            let repr = token.to_string();
-
-            match byte(&repr, 0) {
-                // "...", r"...", r#"..."#
-                b'"' | b'r' => {
-                    let (_, suffix) = parse_lit_str(&repr);
-                    return Lit::Str(LitStr {
-                        repr: Box::new(LitRepr { token, suffix }),
-                    });
-                }
-                b'b' => match byte(&repr, 1) {
-                    // b"...", br"...", br#"...#"
-                    b'"' | b'r' => {
-                        let (_, suffix) = parse_lit_byte_str(&repr);
-                        return Lit::ByteStr(LitByteStr {
-                            repr: Box::new(LitRepr { token, suffix }),
-                        });
-                    }
-                    // b'...'
-                    b'\'' => {
-                        let (_, suffix) = parse_lit_byte(&repr);
-                        return Lit::Byte(LitByte {
-                            repr: Box::new(LitRepr { token, suffix }),
-                        });
-                    }
-                    _ => {}
-                },
-                // '...'
-                b'\'' => {
-                    let (_, suffix) = parse_lit_char(&repr);
-                    return Lit::Char(LitChar {
-                        repr: Box::new(LitRepr { token, suffix }),
-                    });
-                }
-                b'0'..=b'9' | b'-' => {
-                    // 0, 123, 0xFF, 0o77, 0b11
-                    if let Some((digits, suffix)) = parse_lit_int(&repr) {
-                        return Lit::Int(LitInt {
-                            repr: Box::new(LitIntRepr {
-                                token,
-                                digits,
-                                suffix,
-                            }),
-                        });
-                    }
-                    // 1.0, 1e-1, 1e+1
-                    if let Some((digits, suffix)) = parse_lit_float(&repr) {
-                        return Lit::Float(LitFloat {
-                            repr: Box::new(LitFloatRepr {
-                                token,
-                                digits,
-                                suffix,
-                            }),
-                        });
-                    }
-                }
-                // true, false
-                b't' | b'f' => {
-                    if repr == "true" || repr == "false" {
-                        return Lit::Bool(LitBool {
-                            value: repr == "true",
-                            span: token.span(),
-                        });
-                    }
-                }
-                // c"...", cr"...", cr#"..."#
-                // TODO: add a Lit::CStr variant?
-                b'c' => return Lit::Verbatim(token),
-                b'(' if repr == "(/*ERROR*/)" => return Lit::Verbatim(token),
-                _ => {}
-            }
-
-            panic!("Unrecognized literal: `{}`", repr);
-        }
-
-        pub fn suffix(&self) -> &str {
-            match self {
-                Lit::Str(lit) => lit.suffix(),
-                Lit::ByteStr(lit) => lit.suffix(),
-                Lit::Byte(lit) => lit.suffix(),
-                Lit::Char(lit) => lit.suffix(),
-                Lit::Int(lit) => lit.suffix(),
-                Lit::Float(lit) => lit.suffix(),
-                Lit::Bool(_) | Lit::Verbatim(_) => "",
-            }
-        }
-
-        pub fn span(&self) -> Span {
-            match self {
-                Lit::Str(lit) => lit.span(),
-                Lit::ByteStr(lit) => lit.span(),
-                Lit::Byte(lit) => lit.span(),
-                Lit::Char(lit) => lit.span(),
-                Lit::Int(lit) => lit.span(),
-                Lit::Float(lit) => lit.span(),
-                Lit::Bool(lit) => lit.span,
-                Lit::Verbatim(lit) => lit.span(),
-            }
-        }
-
-        pub fn set_span(&mut self, span: Span) {
-            match self {
-                Lit::Str(lit) => lit.set_span(span),
-                Lit::ByteStr(lit) => lit.set_span(span),
-                Lit::Byte(lit) => lit.set_span(span),
-                Lit::Char(lit) => lit.set_span(span),
-                Lit::Int(lit) => lit.set_span(span),
-                Lit::Float(lit) => lit.set_span(span),
-                Lit::Bool(lit) => lit.span = span,
-                Lit::Verbatim(lit) => lit.set_span(span),
-            }
-        }
-    }
-
-    /// Get the byte at offset idx, or a default of `b'\0'` if we're looking
-    /// past the end of the input buffer.
-    pub(crate) fn byte<S: AsRef<[u8]> + ?Sized>(s: &S, idx: usize) -> u8 {
-        let s = s.as_ref();
-        if idx < s.len() {
-            s[idx]
-        } else {
-            0
-        }
-    }
-
-    fn next_chr(s: &str) -> char {
-        s.chars().next().unwrap_or('\0')
-    }
-
-    // Returns (content, suffix).
-    pub(crate) fn parse_lit_str(s: &str) -> (Box<str>, Box<str>) {
-        match byte(s, 0) {
-            b'"' => parse_lit_str_cooked(s),
-            b'r' => parse_lit_str_raw(s),
-            _ => unreachable!(),
-        }
-    }
-
-    // Clippy false positive
-    // https://github.com/rust-lang-nursery/rust-clippy/issues/2329
-    #[allow(clippy::needless_continue)]
-    fn parse_lit_str_cooked(mut s: &str) -> (Box<str>, Box<str>) {
-        assert_eq!(byte(s, 0), b'"');
-        s = &s[1..];
-
-        let mut content = String::new();
-        'outer: loop {
-            let ch = match byte(s, 0) {
-                b'"' => break,
-                b'\\' => {
-                    let b = byte(s, 1);
-                    s = &s[2..];
-                    match b {
-                        b'x' => {
-                            let (byte, rest) = backslash_x(s);
-                            s = rest;
-                            assert!(byte <= 0x7F, "Invalid \\x byte in string literal");
-                            char::from_u32(u32::from(byte)).unwrap()
-                        }
-                        b'u' => {
-                            let (chr, rest) = backslash_u(s);
-                            s = rest;
-                            chr
-                        }
-                        b'n' => '\n',
-                        b'r' => '\r',
-                        b't' => '\t',
-                        b'\\' => '\\',
-                        b'0' => '\0',
-                        b'\'' => '\'',
-                        b'"' => '"',
-                        b'\r' | b'\n' => loop {
-                            let b = byte(s, 0);
-                            match b {
-                                b' ' | b'\t' | b'\n' | b'\r' => s = &s[1..],
-                                _ => continue 'outer,
-                            }
-                        },
-                        b => panic!("unexpected byte {:?} after \\ character in byte literal", b),
-                    }
-                }
-                b'\r' => {
-                    assert_eq!(byte(s, 1), b'\n', "Bare CR not allowed in string");
-                    s = &s[2..];
-                    '\n'
-                }
-                _ => {
-                    let ch = next_chr(s);
-                    s = &s[ch.len_utf8()..];
-                    ch
-                }
-            };
-            content.push(ch);
-        }
-
-        assert!(s.starts_with('"'));
-        let content = content.into_boxed_str();
-        let suffix = s[1..].to_owned().into_boxed_str();
-        (content, suffix)
-    }
-
-    fn parse_lit_str_raw(mut s: &str) -> (Box<str>, Box<str>) {
-        assert_eq!(byte(s, 0), b'r');
-        s = &s[1..];
-
-        let mut pounds = 0;
-        while byte(s, pounds) == b'#' {
-            pounds += 1;
-        }
-        assert_eq!(byte(s, pounds), b'"');
-        let close = s.rfind('"').unwrap();
-        for end in s[close + 1..close + 1 + pounds].bytes() {
-            assert_eq!(end, b'#');
-        }
-
-        let content = s[pounds + 1..close].to_owned().into_boxed_str();
-        let suffix = s[close + 1 + pounds..].to_owned().into_boxed_str();
-        (content, suffix)
-    }
-
-    // Returns (content, suffix).
-    pub(crate) fn parse_lit_byte_str(s: &str) -> (Vec<u8>, Box<str>) {
-        assert_eq!(byte(s, 0), b'b');
-        match byte(s, 1) {
-            b'"' => parse_lit_byte_str_cooked(s),
-            b'r' => parse_lit_byte_str_raw(s),
-            _ => unreachable!(),
-        }
-    }
-
-    // Clippy false positive
-    // https://github.com/rust-lang-nursery/rust-clippy/issues/2329
-    #[allow(clippy::needless_continue)]
-    fn parse_lit_byte_str_cooked(mut s: &str) -> (Vec<u8>, Box<str>) {
-        assert_eq!(byte(s, 0), b'b');
-        assert_eq!(byte(s, 1), b'"');
-        s = &s[2..];
-
-        // We're going to want to have slices which don't respect codepoint boundaries.
-        let mut v = s.as_bytes();
-
-        let mut out = Vec::new();
-        'outer: loop {
-            let byte = match byte(v, 0) {
-                b'"' => break,
-                b'\\' => {
-                    let b = byte(v, 1);
-                    v = &v[2..];
-                    match b {
-                        b'x' => {
-                            let (b, rest) = backslash_x(v);
-                            v = rest;
-                            b
-                        }
-                        b'n' => b'\n',
-                        b'r' => b'\r',
-                        b't' => b'\t',
-                        b'\\' => b'\\',
-                        b'0' => b'\0',
-                        b'\'' => b'\'',
-                        b'"' => b'"',
-                        b'\r' | b'\n' => loop {
-                            let byte = byte(v, 0);
-                            if matches!(byte, b' ' | b'\t' | b'\n' | b'\r') {
-                                v = &v[1..];
-                            } else {
-                                continue 'outer;
-                            }
-                        },
-                        b => panic!("unexpected byte {:?} after \\ character in byte literal", b),
-                    }
-                }
-                b'\r' => {
-                    assert_eq!(byte(v, 1), b'\n', "Bare CR not allowed in string");
-                    v = &v[2..];
-                    b'\n'
-                }
-                b => {
-                    v = &v[1..];
-                    b
-                }
-            };
-            out.push(byte);
-        }
-
-        assert_eq!(byte(v, 0), b'"');
-        let suffix = s[s.len() - v.len() + 1..].to_owned().into_boxed_str();
-        (out, suffix)
-    }
-
-    fn parse_lit_byte_str_raw(s: &str) -> (Vec<u8>, Box<str>) {
-        assert_eq!(byte(s, 0), b'b');
-        let (value, suffix) = parse_lit_str_raw(&s[1..]);
-        (String::from(value).into_bytes(), suffix)
-    }
-
-    // Returns (value, suffix).
-    pub(crate) fn parse_lit_byte(s: &str) -> (u8, Box<str>) {
-        assert_eq!(byte(s, 0), b'b');
-        assert_eq!(byte(s, 1), b'\'');
-
-        // We're going to want to have slices which don't respect codepoint boundaries.
-        let mut v = s[2..].as_bytes();
-
-        let b = match byte(v, 0) {
-            b'\\' => {
-                let b = byte(v, 1);
-                v = &v[2..];
-                match b {
-                    b'x' => {
-                        let (b, rest) = backslash_x(v);
-                        v = rest;
-                        b
-                    }
-                    b'n' => b'\n',
-                    b'r' => b'\r',
-                    b't' => b'\t',
-                    b'\\' => b'\\',
-                    b'0' => b'\0',
-                    b'\'' => b'\'',
-                    b'"' => b'"',
-                    b => panic!("unexpected byte {:?} after \\ character in byte literal", b),
-                }
-            }
-            b => {
-                v = &v[1..];
-                b
-            }
-        };
-
-        assert_eq!(byte(v, 0), b'\'');
-        let suffix = s[s.len() - v.len() + 1..].to_owned().into_boxed_str();
-        (b, suffix)
-    }
-
-    // Returns (value, suffix).
-    pub(crate) fn parse_lit_char(mut s: &str) -> (char, Box<str>) {
-        assert_eq!(byte(s, 0), b'\'');
-        s = &s[1..];
-
-        let ch = match byte(s, 0) {
-            b'\\' => {
-                let b = byte(s, 1);
-                s = &s[2..];
-                match b {
-                    b'x' => {
-                        let (byte, rest) = backslash_x(s);
-                        s = rest;
-                        assert!(byte <= 0x80, "Invalid \\x byte in string literal");
-                        char::from_u32(u32::from(byte)).unwrap()
-                    }
-                    b'u' => {
-                        let (chr, rest) = backslash_u(s);
-                        s = rest;
-                        chr
-                    }
-                    b'n' => '\n',
-                    b'r' => '\r',
-                    b't' => '\t',
-                    b'\\' => '\\',
-                    b'0' => '\0',
-                    b'\'' => '\'',
-                    b'"' => '"',
-                    b => panic!("unexpected byte {:?} after \\ character in byte literal", b),
-                }
-            }
-            _ => {
-                let ch = next_chr(s);
-                s = &s[ch.len_utf8()..];
-                ch
-            }
-        };
-        assert_eq!(byte(s, 0), b'\'');
-        let suffix = s[1..].to_owned().into_boxed_str();
-        (ch, suffix)
-    }
-
-    fn backslash_x<S>(s: &S) -> (u8, &S)
-    where
-        S: Index<RangeFrom<usize>, Output = S> + AsRef<[u8]> + ?Sized,
-    {
-        let mut ch = 0;
-        let b0 = byte(s, 0);
-        let b1 = byte(s, 1);
-        ch += 0x10
-            * match b0 {
-                b'0'..=b'9' => b0 - b'0',
-                b'a'..=b'f' => 10 + (b0 - b'a'),
-                b'A'..=b'F' => 10 + (b0 - b'A'),
-                _ => panic!("unexpected non-hex character after \\x"),
-            };
-        ch += match b1 {
-            b'0'..=b'9' => b1 - b'0',
-            b'a'..=b'f' => 10 + (b1 - b'a'),
-            b'A'..=b'F' => 10 + (b1 - b'A'),
-            _ => panic!("unexpected non-hex character after \\x"),
-        };
-        (ch, &s[2..])
-    }
-
-    fn backslash_u(mut s: &str) -> (char, &str) {
-        if byte(s, 0) != b'{' {
-            panic!("{}", "expected { after \\u");
-        }
-        s = &s[1..];
-
-        let mut ch = 0;
-        let mut digits = 0;
-        loop {
-            let b = byte(s, 0);
-            let digit = match b {
-                b'0'..=b'9' => b - b'0',
-                b'a'..=b'f' => 10 + b - b'a',
-                b'A'..=b'F' => 10 + b - b'A',
-                b'_' if digits > 0 => {
-                    s = &s[1..];
-                    continue;
-                }
-                b'}' if digits == 0 => panic!("invalid empty unicode escape"),
-                b'}' => break,
-                _ => panic!("unexpected non-hex character after \\u"),
-            };
-            if digits == 6 {
-                panic!("overlong unicode escape (must have at most 6 hex digits)");
-            }
-            ch *= 0x10;
-            ch += u32::from(digit);
-            digits += 1;
-            s = &s[1..];
-        }
-        assert!(byte(s, 0) == b'}');
-        s = &s[1..];
-
-        if let Some(ch) = char::from_u32(ch) {
-            (ch, s)
-        } else {
-            panic!("character code {:x} is not a valid unicode character", ch);
-        }
-    }
-
-    // Returns base 10 digits and suffix.
-    pub(crate) fn parse_lit_int(mut s: &str) -> Option<(Box<str>, Box<str>)> {
-        let negative = byte(s, 0) == b'-';
-        if negative {
-            s = &s[1..];
-        }
-
-        let base = match (byte(s, 0), byte(s, 1)) {
-            (b'0', b'x') => {
-                s = &s[2..];
-                16
-            }
-            (b'0', b'o') => {
-                s = &s[2..];
-                8
-            }
-            (b'0', b'b') => {
-                s = &s[2..];
-                2
-            }
-            (b'0'..=b'9', _) => 10,
-            _ => return None,
-        };
-
-        let mut value = BigInt::new();
-        let mut has_digit = false;
-        'outer: loop {
-            let b = byte(s, 0);
-            let digit = match b {
-                b'0'..=b'9' => b - b'0',
-                b'a'..=b'f' if base > 10 => b - b'a' + 10,
-                b'A'..=b'F' if base > 10 => b - b'A' + 10,
-                b'_' => {
-                    s = &s[1..];
-                    continue;
-                }
-                // If looking at a floating point literal, we don't want to
-                // consider it an integer.
-                b'.' if base == 10 => return None,
-                b'e' | b'E' if base == 10 => {
-                    let mut has_exp = false;
-                    for (i, b) in s[1..].bytes().enumerate() {
-                        match b {
-                            b'_' => {}
-                            b'-' | b'+' => return None,
-                            b'0'..=b'9' => has_exp = true,
-                            _ => {
-                                let suffix = &s[1 + i..];
-                                if has_exp && crate::ident::xid_ok(suffix) {
-                                    return None;
-                                } else {
-                                    break 'outer;
-                                }
-                            }
-                        }
-                    }
-                    if has_exp {
-                        return None;
-                    } else {
-                        break;
-                    }
-                }
-                _ => break,
-            };
-
-            if digit >= base {
-                return None;
-            }
-
-            has_digit = true;
-            value *= base;
-            value += digit;
-            s = &s[1..];
-        }
-
-        if !has_digit {
-            return None;
-        }
-
-        let suffix = s;
-        if suffix.is_empty() || crate::ident::xid_ok(suffix) {
-            let mut repr = value.to_string();
-            if negative {
-                repr.insert(0, '-');
-            }
-            Some((repr.into_boxed_str(), suffix.to_owned().into_boxed_str()))
-        } else {
-            None
-        }
-    }
-
-    // Returns base 10 digits and suffix.
-    pub(crate) fn parse_lit_float(input: &str) -> Option<(Box<str>, Box<str>)> {
-        // Rust's floating point literals are very similar to the ones parsed by
-        // the standard library, except that rust's literals can contain
-        // ignorable underscores. Let's remove those underscores.
-
-        let mut bytes = input.to_owned().into_bytes();
-
-        let start = (*bytes.first()? == b'-') as usize;
-        match bytes.get(start)? {
-            b'0'..=b'9' => {}
-            _ => return None,
-        }
-
-        let mut read = start;
-        let mut write = start;
-        let mut has_dot = false;
-        let mut has_e = false;
-        let mut has_sign = false;
-        let mut has_exponent = false;
-        while read < bytes.len() {
-            match bytes[read] {
-                b'_' => {
-                    // Don't increase write
-                    read += 1;
-                    continue;
-                }
-                b'0'..=b'9' => {
-                    if has_e {
-                        has_exponent = true;
-                    }
-                    bytes[write] = bytes[read];
-                }
-                b'.' => {
-                    if has_e || has_dot {
-                        return None;
-                    }
-                    has_dot = true;
-                    bytes[write] = b'.';
-                }
-                b'e' | b'E' => {
-                    match bytes[read + 1..]
-                        .iter()
-                        .find(|b| **b != b'_')
-                        .unwrap_or(&b'\0')
-                    {
-                        b'-' | b'+' | b'0'..=b'9' => {}
-                        _ => break,
-                    }
-                    if has_e {
-                        if has_exponent {
-                            break;
-                        } else {
-                            return None;
-                        }
-                    }
-                    has_e = true;
-                    bytes[write] = b'e';
-                }
-                b'-' | b'+' => {
-                    if has_sign || has_exponent || !has_e {
-                        return None;
-                    }
-                    has_sign = true;
-                    if bytes[read] == b'-' {
-                        bytes[write] = bytes[read];
-                    } else {
-                        // Omit '+'
-                        read += 1;
-                        continue;
-                    }
-                }
-                _ => break,
-            }
-            read += 1;
-            write += 1;
-        }
-
-        if has_e && !has_exponent {
-            return None;
-        }
-
-        let mut digits = String::from_utf8(bytes).unwrap();
-        let suffix = digits.split_off(read);
-        digits.truncate(write);
-        if suffix.is_empty() || crate::ident::xid_ok(&suffix) {
-            Some((digits.into_boxed_str(), suffix.into_boxed_str()))
-        } else {
-            None
-        }
-    }
-}
diff --git a/vendor/syn/src/lookahead.rs b/vendor/syn/src/lookahead.rs
deleted file mode 100644
index e89a4c7..0000000
--- a/vendor/syn/src/lookahead.rs
+++ /dev/null
@@ -1,169 +0,0 @@
-use crate::buffer::Cursor;
-use crate::error::{self, Error};
-use crate::sealed::lookahead::Sealed;
-use crate::span::IntoSpans;
-use crate::token::Token;
-use proc_macro2::{Delimiter, Span};
-use std::cell::RefCell;
-
-/// Support for checking the next token in a stream to decide how to parse.
-///
-/// An important advantage over [`ParseStream::peek`] is that here we
-/// automatically construct an appropriate error message based on the token
-/// alternatives that get peeked. If you are producing your own error message,
-/// go ahead and use `ParseStream::peek` instead.
-///
-/// Use [`ParseStream::lookahead1`] to construct this object.
-///
-/// [`ParseStream::peek`]: crate::parse::ParseBuffer::peek
-/// [`ParseStream::lookahead1`]: crate::parse::ParseBuffer::lookahead1
-///
-/// Consuming tokens from the source stream after constructing a lookahead
-/// object does not also advance the lookahead object.
-///
-/// # Example
-///
-/// ```
-/// use syn::{ConstParam, Ident, Lifetime, LifetimeParam, Result, Token, TypeParam};
-/// use syn::parse::{Parse, ParseStream};
-///
-/// // A generic parameter, a single one of the comma-separated elements inside
-/// // angle brackets in:
-/// //
-/// //     fn f<T: Clone, 'a, 'b: 'a, const N: usize>() { ... }
-/// //
-/// // On invalid input, lookahead gives us a reasonable error message.
-/// //
-/// //     error: expected one of: identifier, lifetime, `const`
-/// //       |
-/// //     5 |     fn f<!Sized>() {}
-/// //       |          ^
-/// enum GenericParam {
-///     Type(TypeParam),
-///     Lifetime(LifetimeParam),
-///     Const(ConstParam),
-/// }
-///
-/// impl Parse for GenericParam {
-///     fn parse(input: ParseStream) -> Result<Self> {
-///         let lookahead = input.lookahead1();
-///         if lookahead.peek(Ident) {
-///             input.parse().map(GenericParam::Type)
-///         } else if lookahead.peek(Lifetime) {
-///             input.parse().map(GenericParam::Lifetime)
-///         } else if lookahead.peek(Token![const]) {
-///             input.parse().map(GenericParam::Const)
-///         } else {
-///             Err(lookahead.error())
-///         }
-///     }
-/// }
-/// ```
-pub struct Lookahead1<'a> {
-    scope: Span,
-    cursor: Cursor<'a>,
-    comparisons: RefCell<Vec<&'static str>>,
-}
-
-pub(crate) fn new(scope: Span, cursor: Cursor) -> Lookahead1 {
-    Lookahead1 {
-        scope,
-        cursor,
-        comparisons: RefCell::new(Vec::new()),
-    }
-}
-
-fn peek_impl(
-    lookahead: &Lookahead1,
-    peek: fn(Cursor) -> bool,
-    display: fn() -> &'static str,
-) -> bool {
-    if peek(lookahead.cursor) {
-        return true;
-    }
-    lookahead.comparisons.borrow_mut().push(display());
-    false
-}
-
-impl<'a> Lookahead1<'a> {
-    /// Looks at the next token in the parse stream to determine whether it
-    /// matches the requested type of token.
-    ///
-    /// # Syntax
-    ///
-    /// Note that this method does not use turbofish syntax. Pass the peek type
-    /// inside of parentheses.
-    ///
-    /// - `input.peek(Token![struct])`
-    /// - `input.peek(Token![==])`
-    /// - `input.peek(Ident)`&emsp;*(does not accept keywords)*
-    /// - `input.peek(Ident::peek_any)`
-    /// - `input.peek(Lifetime)`
-    /// - `input.peek(token::Brace)`
-    pub fn peek<T: Peek>(&self, token: T) -> bool {
-        let _ = token;
-        peek_impl(self, T::Token::peek, T::Token::display)
-    }
-
-    /// Triggers an error at the current position of the parse stream.
-    ///
-    /// The error message will identify all of the expected token types that
-    /// have been peeked against this lookahead instance.
-    pub fn error(self) -> Error {
-        let comparisons = self.comparisons.borrow();
-        match comparisons.len() {
-            0 => {
-                if self.cursor.eof() {
-                    Error::new(self.scope, "unexpected end of input")
-                } else {
-                    Error::new(self.cursor.span(), "unexpected token")
-                }
-            }
-            1 => {
-                let message = format!("expected {}", comparisons[0]);
-                error::new_at(self.scope, self.cursor, message)
-            }
-            2 => {
-                let message = format!("expected {} or {}", comparisons[0], comparisons[1]);
-                error::new_at(self.scope, self.cursor, message)
-            }
-            _ => {
-                let join = comparisons.join(", ");
-                let message = format!("expected one of: {}", join);
-                error::new_at(self.scope, self.cursor, message)
-            }
-        }
-    }
-}
-
-/// Types that can be parsed by looking at just one token.
-///
-/// Use [`ParseStream::peek`] to peek one of these types in a parse stream
-/// without consuming it from the stream.
-///
-/// This trait is sealed and cannot be implemented for types outside of Syn.
-///
-/// [`ParseStream::peek`]: crate::parse::ParseBuffer::peek
-pub trait Peek: Sealed {
-    // Not public API.
-    #[doc(hidden)]
-    type Token: Token;
-}
-
-impl<F: Copy + FnOnce(TokenMarker) -> T, T: Token> Peek for F {
-    type Token = T;
-}
-
-pub enum TokenMarker {}
-
-impl<S> IntoSpans<S> for TokenMarker {
-    fn into_spans(self) -> S {
-        match self {}
-    }
-}
-
-pub(crate) fn is_delimiter(cursor: Cursor, delimiter: Delimiter) -> bool {
-    cursor.group(delimiter).is_some()
-}
-
-impl<F: Copy + FnOnce(TokenMarker) -> T, T: Token> Sealed for F {}
diff --git a/vendor/syn/src/mac.rs b/vendor/syn/src/mac.rs
deleted file mode 100644
index 8f687cc..0000000
--- a/vendor/syn/src/mac.rs
+++ /dev/null
@@ -1,211 +0,0 @@
-use super::*;
-use crate::token::{Brace, Bracket, Paren};
-use proc_macro2::extra::DelimSpan;
-#[cfg(any(feature = "parsing", feature = "printing"))]
-use proc_macro2::Delimiter;
-use proc_macro2::TokenStream;
-#[cfg(feature = "parsing")]
-use proc_macro2::TokenTree;
-
-#[cfg(feature = "parsing")]
-use crate::parse::{Parse, ParseStream, Parser, Result};
-
-ast_struct! {
-    /// A macro invocation: `println!("{}", mac)`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct Macro {
-        pub path: Path,
-        pub bang_token: Token![!],
-        pub delimiter: MacroDelimiter,
-        pub tokens: TokenStream,
-    }
-}
-
-ast_enum! {
-    /// A grouping token that surrounds a macro body: `m!(...)` or `m!{...}` or `m![...]`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub enum MacroDelimiter {
-        Paren(Paren),
-        Brace(Brace),
-        Bracket(Bracket),
-    }
-}
-
-impl MacroDelimiter {
-    pub fn span(&self) -> &DelimSpan {
-        match self {
-            MacroDelimiter::Paren(token) => &token.span,
-            MacroDelimiter::Brace(token) => &token.span,
-            MacroDelimiter::Bracket(token) => &token.span,
-        }
-    }
-}
-
-impl Macro {
-    /// Parse the tokens within the macro invocation's delimiters into a syntax
-    /// tree.
-    ///
-    /// This is equivalent to `syn::parse2::<T>(mac.tokens)` except that it
-    /// produces a more useful span when `tokens` is empty.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use syn::{parse_quote, Expr, ExprLit, Ident, Lit, LitStr, Macro, Token};
-    /// use syn::ext::IdentExt;
-    /// use syn::parse::{Error, Parse, ParseStream, Result};
-    /// use syn::punctuated::Punctuated;
-    ///
-    /// // The arguments expected by libcore's format_args macro, and as a
-    /// // result most other formatting and printing macros like println.
-    /// //
-    /// //     println!("{} is {number:.prec$}", "x", prec=5, number=0.01)
-    /// struct FormatArgs {
-    ///     format_string: Expr,
-    ///     positional_args: Vec<Expr>,
-    ///     named_args: Vec<(Ident, Expr)>,
-    /// }
-    ///
-    /// impl Parse for FormatArgs {
-    ///     fn parse(input: ParseStream) -> Result<Self> {
-    ///         let format_string: Expr;
-    ///         let mut positional_args = Vec::new();
-    ///         let mut named_args = Vec::new();
-    ///
-    ///         format_string = input.parse()?;
-    ///         while !input.is_empty() {
-    ///             input.parse::<Token![,]>()?;
-    ///             if input.is_empty() {
-    ///                 break;
-    ///             }
-    ///             if input.peek(Ident::peek_any) && input.peek2(Token![=]) {
-    ///                 while !input.is_empty() {
-    ///                     let name: Ident = input.call(Ident::parse_any)?;
-    ///                     input.parse::<Token![=]>()?;
-    ///                     let value: Expr = input.parse()?;
-    ///                     named_args.push((name, value));
-    ///                     if input.is_empty() {
-    ///                         break;
-    ///                     }
-    ///                     input.parse::<Token![,]>()?;
-    ///                 }
-    ///                 break;
-    ///             }
-    ///             positional_args.push(input.parse()?);
-    ///         }
-    ///
-    ///         Ok(FormatArgs {
-    ///             format_string,
-    ///             positional_args,
-    ///             named_args,
-    ///         })
-    ///     }
-    /// }
-    ///
-    /// // Extract the first argument, the format string literal, from an
-    /// // invocation of a formatting or printing macro.
-    /// fn get_format_string(m: &Macro) -> Result<LitStr> {
-    ///     let args: FormatArgs = m.parse_body()?;
-    ///     match args.format_string {
-    ///         Expr::Lit(ExprLit { lit: Lit::Str(lit), .. }) => Ok(lit),
-    ///         other => {
-    ///             // First argument was not a string literal expression.
-    ///             // Maybe something like: println!(concat!(...), ...)
-    ///             Err(Error::new_spanned(other, "format string must be a string literal"))
-    ///         }
-    ///     }
-    /// }
-    ///
-    /// fn main() {
-    ///     let invocation = parse_quote! {
-    ///         println!("{:?}", Instant::now())
-    ///     };
-    ///     let lit = get_format_string(&invocation).unwrap();
-    ///     assert_eq!(lit.value(), "{:?}");
-    /// }
-    /// ```
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse_body<T: Parse>(&self) -> Result<T> {
-        self.parse_body_with(T::parse)
-    }
-
-    /// Parse the tokens within the macro invocation's delimiters using the
-    /// given parser.
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse_body_with<F: Parser>(&self, parser: F) -> Result<F::Output> {
-        let scope = self.delimiter.span().close();
-        crate::parse::parse_scoped(parser, scope, self.tokens.clone())
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) fn parse_delimiter(input: ParseStream) -> Result<(MacroDelimiter, TokenStream)> {
-    input.step(|cursor| {
-        if let Some((TokenTree::Group(g), rest)) = cursor.token_tree() {
-            let span = g.delim_span();
-            let delimiter = match g.delimiter() {
-                Delimiter::Parenthesis => MacroDelimiter::Paren(Paren(span)),
-                Delimiter::Brace => MacroDelimiter::Brace(Brace(span)),
-                Delimiter::Bracket => MacroDelimiter::Bracket(Bracket(span)),
-                Delimiter::None => {
-                    return Err(cursor.error("expected delimiter"));
-                }
-            };
-            Ok(((delimiter, g.stream()), rest))
-        } else {
-            Err(cursor.error("expected delimiter"))
-        }
-    })
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::*;
-    use crate::parse::{Parse, ParseStream, Result};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Macro {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let tokens;
-            Ok(Macro {
-                path: input.call(Path::parse_mod_style)?,
-                bang_token: input.parse()?,
-                delimiter: {
-                    let (delimiter, content) = parse_delimiter(input)?;
-                    tokens = content;
-                    delimiter
-                },
-                tokens,
-            })
-        }
-    }
-}
-
-#[cfg(feature = "printing")]
-mod printing {
-    use super::*;
-    use proc_macro2::TokenStream;
-    use quote::ToTokens;
-
-    impl MacroDelimiter {
-        pub(crate) fn surround(&self, tokens: &mut TokenStream, inner: TokenStream) {
-            let (delim, span) = match self {
-                MacroDelimiter::Paren(paren) => (Delimiter::Parenthesis, paren.span),
-                MacroDelimiter::Brace(brace) => (Delimiter::Brace, brace.span),
-                MacroDelimiter::Bracket(bracket) => (Delimiter::Bracket, bracket.span),
-            };
-            token::printing::delim(delim, span.join(), tokens, inner);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Macro {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.path.to_tokens(tokens);
-            self.bang_token.to_tokens(tokens);
-            self.delimiter.surround(tokens, self.tokens.clone());
-        }
-    }
-}
diff --git a/vendor/syn/src/macros.rs b/vendor/syn/src/macros.rs
deleted file mode 100644
index 46d2832..0000000
--- a/vendor/syn/src/macros.rs
+++ /dev/null
@@ -1,176 +0,0 @@
-#[cfg_attr(
-    not(any(feature = "full", feature = "derive")),
-    allow(unknown_lints, unused_macro_rules)
-)]
-macro_rules! ast_struct {
-    (
-        $(#[$attr:meta])*
-        $pub:ident $struct:ident $name:ident #full $body:tt
-    ) => {
-        check_keyword_matches!(pub $pub);
-        check_keyword_matches!(struct $struct);
-
-        #[cfg(feature = "full")]
-        $(#[$attr])* $pub $struct $name $body
-
-        #[cfg(not(feature = "full"))]
-        $(#[$attr])* $pub $struct $name {
-            _noconstruct: ::std::marker::PhantomData<::proc_macro2::Span>,
-        }
-
-        #[cfg(all(not(feature = "full"), feature = "printing"))]
-        impl ::quote::ToTokens for $name {
-            fn to_tokens(&self, _: &mut ::proc_macro2::TokenStream) {
-                unreachable!()
-            }
-        }
-    };
-
-    (
-        $(#[$attr:meta])*
-        $pub:ident $struct:ident $name:ident $body:tt
-    ) => {
-        check_keyword_matches!(pub $pub);
-        check_keyword_matches!(struct $struct);
-
-        $(#[$attr])* $pub $struct $name $body
-    };
-}
-
-#[cfg(any(feature = "full", feature = "derive"))]
-macro_rules! ast_enum {
-    (
-        $(#[$enum_attr:meta])*
-        $pub:ident $enum:ident $name:ident $body:tt
-    ) => {
-        check_keyword_matches!(pub $pub);
-        check_keyword_matches!(enum $enum);
-
-        $(#[$enum_attr])* $pub $enum $name $body
-    };
-}
-
-macro_rules! ast_enum_of_structs {
-    (
-        $(#[$enum_attr:meta])*
-        $pub:ident $enum:ident $name:ident $body:tt
-    ) => {
-        check_keyword_matches!(pub $pub);
-        check_keyword_matches!(enum $enum);
-
-        $(#[$enum_attr])* $pub $enum $name $body
-
-        ast_enum_of_structs_impl!($name $body);
-    };
-}
-
-macro_rules! ast_enum_of_structs_impl {
-    (
-        $name:ident {
-            $(
-                $(#[cfg $cfg_attr:tt])*
-                $(#[doc $($doc_attr:tt)*])*
-                $variant:ident $( ($($member:ident)::+) )*,
-            )*
-        }
-    ) => {
-        $($(
-            ast_enum_from_struct!($name::$variant, $($member)::+);
-        )*)*
-
-        #[cfg(feature = "printing")]
-        generate_to_tokens! {
-            ()
-            tokens
-            $name {
-                $(
-                    $(#[cfg $cfg_attr])*
-                    $(#[doc $($doc_attr)*])*
-                    $variant $($($member)::+)*,
-                )*
-            }
-        }
-    };
-}
-
-macro_rules! ast_enum_from_struct {
-    // No From<TokenStream> for verbatim variants.
-    ($name:ident::Verbatim, $member:ident) => {};
-
-    ($name:ident::$variant:ident, $member:ident) => {
-        impl From<$member> for $name {
-            fn from(e: $member) -> $name {
-                $name::$variant(e)
-            }
-        }
-    };
-}
-
-#[cfg(feature = "printing")]
-macro_rules! generate_to_tokens {
-    (
-        ($($arms:tt)*) $tokens:ident $name:ident {
-            $(#[cfg $cfg_attr:tt])*
-            $(#[doc $($doc_attr:tt)*])*
-            $variant:ident,
-            $($next:tt)*
-        }
-    ) => {
-        generate_to_tokens!(
-            ($($arms)* $(#[cfg $cfg_attr])* $name::$variant => {})
-            $tokens $name { $($next)* }
-        );
-    };
-
-    (
-        ($($arms:tt)*) $tokens:ident $name:ident {
-            $(#[cfg $cfg_attr:tt])*
-            $(#[doc $($doc_attr:tt)*])*
-            $variant:ident $member:ident,
-            $($next:tt)*
-        }
-    ) => {
-        generate_to_tokens!(
-            ($($arms)* $(#[cfg $cfg_attr])* $name::$variant(_e) => _e.to_tokens($tokens),)
-            $tokens $name { $($next)* }
-        );
-    };
-
-    (($($arms:tt)*) $tokens:ident $name:ident {}) => {
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-        impl ::quote::ToTokens for $name {
-            fn to_tokens(&self, $tokens: &mut ::proc_macro2::TokenStream) {
-                match self {
-                    $($arms)*
-                }
-            }
-        }
-    };
-}
-
-// Rustdoc bug: does not respect the doc(hidden) on some items.
-#[cfg(all(doc, feature = "parsing"))]
-macro_rules! pub_if_not_doc {
-    ($(#[$m:meta])* $pub:ident $($item:tt)*) => {
-        check_keyword_matches!(pub $pub);
-
-        $(#[$m])*
-        $pub(crate) $($item)*
-    };
-}
-
-#[cfg(all(not(doc), feature = "parsing"))]
-macro_rules! pub_if_not_doc {
-    ($(#[$m:meta])* $pub:ident $($item:tt)*) => {
-        check_keyword_matches!(pub $pub);
-
-        $(#[$m])*
-        $pub $($item)*
-    };
-}
-
-macro_rules! check_keyword_matches {
-    (enum enum) => {};
-    (pub pub) => {};
-    (struct struct) => {};
-}
diff --git a/vendor/syn/src/meta.rs b/vendor/syn/src/meta.rs
deleted file mode 100644
index 66a0a46..0000000
--- a/vendor/syn/src/meta.rs
+++ /dev/null
@@ -1,426 +0,0 @@
-//! Facility for interpreting structured content inside of an `Attribute`.
-
-use crate::ext::IdentExt as _;
-use crate::lit::Lit;
-use crate::parse::{Error, ParseStream, Parser, Result};
-use crate::path::{Path, PathSegment};
-use crate::punctuated::Punctuated;
-use proc_macro2::Ident;
-use std::fmt::Display;
-
-/// Make a parser that is usable with `parse_macro_input!` in a
-/// `#[proc_macro_attribute]` macro.
-///
-/// *Warning:* When parsing attribute args **other than** the
-/// `proc_macro::TokenStream` input of a `proc_macro_attribute`, you do **not**
-/// need this function. In several cases your callers will get worse error
-/// messages if you use this function, because the surrounding delimiter's span
-/// is concealed from attribute macros by rustc. Use
-/// [`Attribute::parse_nested_meta`] instead.
-///
-/// [`Attribute::parse_nested_meta`]: crate::Attribute::parse_nested_meta
-///
-/// # Example
-///
-/// This example implements an attribute macro whose invocations look like this:
-///
-/// ```
-/// # const IGNORE: &str = stringify! {
-/// #[tea(kind = "EarlGrey", hot)]
-/// struct Picard {...}
-/// # };
-/// ```
-///
-/// The "parameters" supported by the attribute are:
-///
-/// - `kind = "..."`
-/// - `hot`
-/// - `with(sugar, milk, ...)`, a comma-separated list of ingredients
-///
-/// ```
-/// # extern crate proc_macro;
-/// #
-/// use proc_macro::TokenStream;
-/// use syn::{parse_macro_input, LitStr, Path};
-///
-/// # const IGNORE: &str = stringify! {
-/// #[proc_macro_attribute]
-/// # };
-/// pub fn tea(args: TokenStream, input: TokenStream) -> TokenStream {
-///     let mut kind: Option<LitStr> = None;
-///     let mut hot: bool = false;
-///     let mut with: Vec<Path> = Vec::new();
-///     let tea_parser = syn::meta::parser(|meta| {
-///         if meta.path.is_ident("kind") {
-///             kind = Some(meta.value()?.parse()?);
-///             Ok(())
-///         } else if meta.path.is_ident("hot") {
-///             hot = true;
-///             Ok(())
-///         } else if meta.path.is_ident("with") {
-///             meta.parse_nested_meta(|meta| {
-///                 with.push(meta.path);
-///                 Ok(())
-///             })
-///         } else {
-///             Err(meta.error("unsupported tea property"))
-///         }
-///     });
-///
-///     parse_macro_input!(args with tea_parser);
-///     eprintln!("kind={kind:?} hot={hot} with={with:?}");
-///
-///     /* ... */
-/// #   TokenStream::new()
-/// }
-/// ```
-///
-/// The `syn::meta` library will take care of dealing with the commas including
-/// trailing commas, and producing sensible error messages on unexpected input.
-///
-/// ```console
-/// error: expected `,`
-///  --> src/main.rs:3:37
-///   |
-/// 3 | #[tea(kind = "EarlGrey", with(sugar = "lol", milk))]
-///   |                                     ^
-/// ```
-///
-/// # Example
-///
-/// Same as above but we factor out most of the logic into a separate function.
-///
-/// ```
-/// # extern crate proc_macro;
-/// #
-/// use proc_macro::TokenStream;
-/// use syn::meta::ParseNestedMeta;
-/// use syn::parse::{Parser, Result};
-/// use syn::{parse_macro_input, LitStr, Path};
-///
-/// # const IGNORE: &str = stringify! {
-/// #[proc_macro_attribute]
-/// # };
-/// pub fn tea(args: TokenStream, input: TokenStream) -> TokenStream {
-///     let mut attrs = TeaAttributes::default();
-///     let tea_parser = syn::meta::parser(|meta| attrs.parse(meta));
-///     parse_macro_input!(args with tea_parser);
-///
-///     /* ... */
-/// #   TokenStream::new()
-/// }
-///
-/// #[derive(Default)]
-/// struct TeaAttributes {
-///     kind: Option<LitStr>,
-///     hot: bool,
-///     with: Vec<Path>,
-/// }
-///
-/// impl TeaAttributes {
-///     fn parse(&mut self, meta: ParseNestedMeta) -> Result<()> {
-///         if meta.path.is_ident("kind") {
-///             self.kind = Some(meta.value()?.parse()?);
-///             Ok(())
-///         } else /* just like in last example */
-/// #           { unimplemented!() }
-///
-///     }
-/// }
-/// ```
-pub fn parser(logic: impl FnMut(ParseNestedMeta) -> Result<()>) -> impl Parser<Output = ()> {
-    |input: ParseStream| {
-        if input.is_empty() {
-            Ok(())
-        } else {
-            parse_nested_meta(input, logic)
-        }
-    }
-}
-
-/// Context for parsing a single property in the conventional syntax for
-/// structured attributes.
-///
-/// # Examples
-///
-/// Refer to usage examples on the following two entry-points:
-///
-/// - [`Attribute::parse_nested_meta`] if you have an entire `Attribute` to
-///   parse. Always use this if possible. Generally this is able to produce
-///   better error messages because `Attribute` holds span information for all
-///   of the delimiters therein.
-///
-/// - [`syn::meta::parser`] if you are implementing a `proc_macro_attribute`
-///   macro and parsing the arguments to the attribute macro, i.e. the ones
-///   written in the same attribute that dispatched the macro invocation. Rustc
-///   does not pass span information for the surrounding delimiters into the
-///   attribute macro invocation in this situation, so error messages might be
-///   less precise.
-///
-/// [`Attribute::parse_nested_meta`]: crate::Attribute::parse_nested_meta
-/// [`syn::meta::parser`]: crate::meta::parser
-#[non_exhaustive]
-pub struct ParseNestedMeta<'a> {
-    pub path: Path,
-    pub input: ParseStream<'a>,
-}
-
-impl<'a> ParseNestedMeta<'a> {
-    /// Used when parsing `key = "value"` syntax.
-    ///
-    /// All it does is advance `meta.input` past the `=` sign in the input. You
-    /// could accomplish the same effect by writing
-    /// `meta.parse::<Token![=]>()?`, so at most it is a minor convenience to
-    /// use `meta.value()?`.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use syn::{parse_quote, Attribute, LitStr};
-    ///
-    /// let attr: Attribute = parse_quote! {
-    ///     #[tea(kind = "EarlGrey")]
-    /// };
-    ///                                          // conceptually:
-    /// if attr.path().is_ident("tea") {         // this parses the `tea`
-    ///     attr.parse_nested_meta(|meta| {      // this parses the `(`
-    ///         if meta.path.is_ident("kind") {  // this parses the `kind`
-    ///             let value = meta.value()?;   // this parses the `=`
-    ///             let s: LitStr = value.parse()?;  // this parses `"EarlGrey"`
-    ///             if s.value() == "EarlGrey" {
-    ///                 // ...
-    ///             }
-    ///             Ok(())
-    ///         } else {
-    ///             Err(meta.error("unsupported attribute"))
-    ///         }
-    ///     })?;
-    /// }
-    /// # anyhow::Ok(())
-    /// ```
-    pub fn value(&self) -> Result<ParseStream<'a>> {
-        self.input.parse::<Token![=]>()?;
-        Ok(self.input)
-    }
-
-    /// Used when parsing `list(...)` syntax **if** the content inside the
-    /// nested parentheses is also expected to conform to Rust's structured
-    /// attribute convention.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use syn::{parse_quote, Attribute};
-    ///
-    /// let attr: Attribute = parse_quote! {
-    ///     #[tea(with(sugar, milk))]
-    /// };
-    ///
-    /// if attr.path().is_ident("tea") {
-    ///     attr.parse_nested_meta(|meta| {
-    ///         if meta.path.is_ident("with") {
-    ///             meta.parse_nested_meta(|meta| {  // <---
-    ///                 if meta.path.is_ident("sugar") {
-    ///                     // Here we can go even deeper if needed.
-    ///                     Ok(())
-    ///                 } else if meta.path.is_ident("milk") {
-    ///                     Ok(())
-    ///                 } else {
-    ///                     Err(meta.error("unsupported ingredient"))
-    ///                 }
-    ///             })
-    ///         } else {
-    ///             Err(meta.error("unsupported tea property"))
-    ///         }
-    ///     })?;
-    /// }
-    /// # anyhow::Ok(())
-    /// ```
-    ///
-    /// # Counterexample
-    ///
-    /// If you don't need `parse_nested_meta`'s help in parsing the content
-    /// written within the nested parentheses, keep in mind that you can always
-    /// just parse it yourself from the exposed ParseStream. Rust syntax permits
-    /// arbitrary tokens within those parentheses so for the crazier stuff,
-    /// `parse_nested_meta` is not what you want.
-    ///
-    /// ```
-    /// use syn::{parenthesized, parse_quote, Attribute, LitInt};
-    ///
-    /// let attr: Attribute = parse_quote! {
-    ///     #[repr(align(32))]
-    /// };
-    ///
-    /// let mut align: Option<LitInt> = None;
-    /// if attr.path().is_ident("repr") {
-    ///     attr.parse_nested_meta(|meta| {
-    ///         if meta.path.is_ident("align") {
-    ///             let content;
-    ///             parenthesized!(content in meta.input);
-    ///             align = Some(content.parse()?);
-    ///             Ok(())
-    ///         } else {
-    ///             Err(meta.error("unsupported repr"))
-    ///         }
-    ///     })?;
-    /// }
-    /// # anyhow::Ok(())
-    /// ```
-    pub fn parse_nested_meta(
-        &self,
-        logic: impl FnMut(ParseNestedMeta) -> Result<()>,
-    ) -> Result<()> {
-        let content;
-        parenthesized!(content in self.input);
-        parse_nested_meta(&content, logic)
-    }
-
-    /// Report that the attribute's content did not conform to expectations.
-    ///
-    /// The span of the resulting error will cover `meta.path` *and* everything
-    /// that has been parsed so far since it.
-    ///
-    /// There are 2 ways you might call this. First, if `meta.path` is not
-    /// something you recognize:
-    ///
-    /// ```
-    /// # use syn::Attribute;
-    /// #
-    /// # fn example(attr: &Attribute) -> syn::Result<()> {
-    /// attr.parse_nested_meta(|meta| {
-    ///     if meta.path.is_ident("kind") {
-    ///         // ...
-    ///         Ok(())
-    ///     } else {
-    ///         Err(meta.error("unsupported tea property"))
-    ///     }
-    /// })?;
-    /// # Ok(())
-    /// # }
-    /// ```
-    ///
-    /// In this case, it behaves exactly like
-    /// `syn::Error::new_spanned(&meta.path, "message...")`.
-    ///
-    /// ```console
-    /// error: unsupported tea property
-    ///  --> src/main.rs:3:26
-    ///   |
-    /// 3 | #[tea(kind = "EarlGrey", wat = "foo")]
-    ///   |                          ^^^
-    /// ```
-    ///
-    /// More usefully, the second place is if you've already parsed a value but
-    /// have decided not to accept the value:
-    ///
-    /// ```
-    /// # use syn::Attribute;
-    /// #
-    /// # fn example(attr: &Attribute) -> syn::Result<()> {
-    /// use syn::Expr;
-    ///
-    /// attr.parse_nested_meta(|meta| {
-    ///     if meta.path.is_ident("kind") {
-    ///         let expr: Expr = meta.value()?.parse()?;
-    ///         match expr {
-    ///             Expr::Lit(expr) => /* ... */
-    /// #               unimplemented!(),
-    ///             Expr::Path(expr) => /* ... */
-    /// #               unimplemented!(),
-    ///             Expr::Macro(expr) => /* ... */
-    /// #               unimplemented!(),
-    ///             _ => Err(meta.error("tea kind must be a string literal, path, or macro")),
-    ///         }
-    ///     } else /* as above */
-    /// #       { unimplemented!() }
-    ///
-    /// })?;
-    /// # Ok(())
-    /// # }
-    /// ```
-    ///
-    /// ```console
-    /// error: tea kind must be a string literal, path, or macro
-    ///  --> src/main.rs:3:7
-    ///   |
-    /// 3 | #[tea(kind = async { replicator.await })]
-    ///   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-    /// ```
-    ///
-    /// Often you may want to use `syn::Error::new_spanned` even in this
-    /// situation. In the above code, that would be:
-    ///
-    /// ```
-    /// # use syn::{Error, Expr};
-    /// #
-    /// # fn example(expr: Expr) -> syn::Result<()> {
-    ///     match expr {
-    ///         Expr::Lit(expr) => /* ... */
-    /// #           unimplemented!(),
-    ///         Expr::Path(expr) => /* ... */
-    /// #           unimplemented!(),
-    ///         Expr::Macro(expr) => /* ... */
-    /// #           unimplemented!(),
-    ///         _ => Err(Error::new_spanned(expr, "unsupported expression type for `kind`")),
-    ///     }
-    /// # }
-    /// ```
-    ///
-    /// ```console
-    /// error: unsupported expression type for `kind`
-    ///  --> src/main.rs:3:14
-    ///   |
-    /// 3 | #[tea(kind = async { replicator.await })]
-    ///   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^
-    /// ```
-    pub fn error(&self, msg: impl Display) -> Error {
-        let start_span = self.path.segments[0].ident.span();
-        let end_span = self.input.cursor().prev_span();
-        crate::error::new2(start_span, end_span, msg)
-    }
-}
-
-pub(crate) fn parse_nested_meta(
-    input: ParseStream,
-    mut logic: impl FnMut(ParseNestedMeta) -> Result<()>,
-) -> Result<()> {
-    loop {
-        let path = input.call(parse_meta_path)?;
-        logic(ParseNestedMeta { path, input })?;
-        if input.is_empty() {
-            return Ok(());
-        }
-        input.parse::<Token![,]>()?;
-        if input.is_empty() {
-            return Ok(());
-        }
-    }
-}
-
-// Like Path::parse_mod_style, but accepts keywords in the path.
-fn parse_meta_path(input: ParseStream) -> Result<Path> {
-    Ok(Path {
-        leading_colon: input.parse()?,
-        segments: {
-            let mut segments = Punctuated::new();
-            if input.peek(Ident::peek_any) {
-                let ident = Ident::parse_any(input)?;
-                segments.push_value(PathSegment::from(ident));
-            } else if input.is_empty() {
-                return Err(input.error("expected nested attribute"));
-            } else if input.peek(Lit) {
-                return Err(input.error("unexpected literal in nested attribute, expected ident"));
-            } else {
-                return Err(input.error("unexpected token in nested attribute, expected ident"));
-            }
-            while input.peek(Token![::]) {
-                let punct = input.parse()?;
-                segments.push_punct(punct);
-                let ident = Ident::parse_any(input)?;
-                segments.push_value(PathSegment::from(ident));
-            }
-            segments
-        },
-    })
-}
diff --git a/vendor/syn/src/op.rs b/vendor/syn/src/op.rs
deleted file mode 100644
index c231285..0000000
--- a/vendor/syn/src/op.rs
+++ /dev/null
@@ -1,218 +0,0 @@
-ast_enum! {
-    /// A binary operator: `+`, `+=`, `&`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    #[non_exhaustive]
-    pub enum BinOp {
-        /// The `+` operator (addition)
-        Add(Token![+]),
-        /// The `-` operator (subtraction)
-        Sub(Token![-]),
-        /// The `*` operator (multiplication)
-        Mul(Token![*]),
-        /// The `/` operator (division)
-        Div(Token![/]),
-        /// The `%` operator (modulus)
-        Rem(Token![%]),
-        /// The `&&` operator (logical and)
-        And(Token![&&]),
-        /// The `||` operator (logical or)
-        Or(Token![||]),
-        /// The `^` operator (bitwise xor)
-        BitXor(Token![^]),
-        /// The `&` operator (bitwise and)
-        BitAnd(Token![&]),
-        /// The `|` operator (bitwise or)
-        BitOr(Token![|]),
-        /// The `<<` operator (shift left)
-        Shl(Token![<<]),
-        /// The `>>` operator (shift right)
-        Shr(Token![>>]),
-        /// The `==` operator (equality)
-        Eq(Token![==]),
-        /// The `<` operator (less than)
-        Lt(Token![<]),
-        /// The `<=` operator (less than or equal to)
-        Le(Token![<=]),
-        /// The `!=` operator (not equal to)
-        Ne(Token![!=]),
-        /// The `>=` operator (greater than or equal to)
-        Ge(Token![>=]),
-        /// The `>` operator (greater than)
-        Gt(Token![>]),
-        /// The `+=` operator
-        AddAssign(Token![+=]),
-        /// The `-=` operator
-        SubAssign(Token![-=]),
-        /// The `*=` operator
-        MulAssign(Token![*=]),
-        /// The `/=` operator
-        DivAssign(Token![/=]),
-        /// The `%=` operator
-        RemAssign(Token![%=]),
-        /// The `^=` operator
-        BitXorAssign(Token![^=]),
-        /// The `&=` operator
-        BitAndAssign(Token![&=]),
-        /// The `|=` operator
-        BitOrAssign(Token![|=]),
-        /// The `<<=` operator
-        ShlAssign(Token![<<=]),
-        /// The `>>=` operator
-        ShrAssign(Token![>>=]),
-    }
-}
-
-ast_enum! {
-    /// A unary operator: `*`, `!`, `-`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    #[non_exhaustive]
-    pub enum UnOp {
-        /// The `*` operator for dereferencing
-        Deref(Token![*]),
-        /// The `!` operator for logical inversion
-        Not(Token![!]),
-        /// The `-` operator for negation
-        Neg(Token![-]),
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::*;
-    use crate::parse::{Parse, ParseStream, Result};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for BinOp {
-        fn parse(input: ParseStream) -> Result<Self> {
-            if input.peek(Token![+=]) {
-                input.parse().map(BinOp::AddAssign)
-            } else if input.peek(Token![-=]) {
-                input.parse().map(BinOp::SubAssign)
-            } else if input.peek(Token![*=]) {
-                input.parse().map(BinOp::MulAssign)
-            } else if input.peek(Token![/=]) {
-                input.parse().map(BinOp::DivAssign)
-            } else if input.peek(Token![%=]) {
-                input.parse().map(BinOp::RemAssign)
-            } else if input.peek(Token![^=]) {
-                input.parse().map(BinOp::BitXorAssign)
-            } else if input.peek(Token![&=]) {
-                input.parse().map(BinOp::BitAndAssign)
-            } else if input.peek(Token![|=]) {
-                input.parse().map(BinOp::BitOrAssign)
-            } else if input.peek(Token![<<=]) {
-                input.parse().map(BinOp::ShlAssign)
-            } else if input.peek(Token![>>=]) {
-                input.parse().map(BinOp::ShrAssign)
-            } else if input.peek(Token![&&]) {
-                input.parse().map(BinOp::And)
-            } else if input.peek(Token![||]) {
-                input.parse().map(BinOp::Or)
-            } else if input.peek(Token![<<]) {
-                input.parse().map(BinOp::Shl)
-            } else if input.peek(Token![>>]) {
-                input.parse().map(BinOp::Shr)
-            } else if input.peek(Token![==]) {
-                input.parse().map(BinOp::Eq)
-            } else if input.peek(Token![<=]) {
-                input.parse().map(BinOp::Le)
-            } else if input.peek(Token![!=]) {
-                input.parse().map(BinOp::Ne)
-            } else if input.peek(Token![>=]) {
-                input.parse().map(BinOp::Ge)
-            } else if input.peek(Token![+]) {
-                input.parse().map(BinOp::Add)
-            } else if input.peek(Token![-]) {
-                input.parse().map(BinOp::Sub)
-            } else if input.peek(Token![*]) {
-                input.parse().map(BinOp::Mul)
-            } else if input.peek(Token![/]) {
-                input.parse().map(BinOp::Div)
-            } else if input.peek(Token![%]) {
-                input.parse().map(BinOp::Rem)
-            } else if input.peek(Token![^]) {
-                input.parse().map(BinOp::BitXor)
-            } else if input.peek(Token![&]) {
-                input.parse().map(BinOp::BitAnd)
-            } else if input.peek(Token![|]) {
-                input.parse().map(BinOp::BitOr)
-            } else if input.peek(Token![<]) {
-                input.parse().map(BinOp::Lt)
-            } else if input.peek(Token![>]) {
-                input.parse().map(BinOp::Gt)
-            } else {
-                Err(input.error("expected binary operator"))
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for UnOp {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let lookahead = input.lookahead1();
-            if lookahead.peek(Token![*]) {
-                input.parse().map(UnOp::Deref)
-            } else if lookahead.peek(Token![!]) {
-                input.parse().map(UnOp::Not)
-            } else if lookahead.peek(Token![-]) {
-                input.parse().map(UnOp::Neg)
-            } else {
-                Err(lookahead.error())
-            }
-        }
-    }
-}
-
-#[cfg(feature = "printing")]
-mod printing {
-    use super::*;
-    use proc_macro2::TokenStream;
-    use quote::ToTokens;
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for BinOp {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            match self {
-                BinOp::Add(t) => t.to_tokens(tokens),
-                BinOp::Sub(t) => t.to_tokens(tokens),
-                BinOp::Mul(t) => t.to_tokens(tokens),
-                BinOp::Div(t) => t.to_tokens(tokens),
-                BinOp::Rem(t) => t.to_tokens(tokens),
-                BinOp::And(t) => t.to_tokens(tokens),
-                BinOp::Or(t) => t.to_tokens(tokens),
-                BinOp::BitXor(t) => t.to_tokens(tokens),
-                BinOp::BitAnd(t) => t.to_tokens(tokens),
-                BinOp::BitOr(t) => t.to_tokens(tokens),
-                BinOp::Shl(t) => t.to_tokens(tokens),
-                BinOp::Shr(t) => t.to_tokens(tokens),
-                BinOp::Eq(t) => t.to_tokens(tokens),
-                BinOp::Lt(t) => t.to_tokens(tokens),
-                BinOp::Le(t) => t.to_tokens(tokens),
-                BinOp::Ne(t) => t.to_tokens(tokens),
-                BinOp::Ge(t) => t.to_tokens(tokens),
-                BinOp::Gt(t) => t.to_tokens(tokens),
-                BinOp::AddAssign(t) => t.to_tokens(tokens),
-                BinOp::SubAssign(t) => t.to_tokens(tokens),
-                BinOp::MulAssign(t) => t.to_tokens(tokens),
-                BinOp::DivAssign(t) => t.to_tokens(tokens),
-                BinOp::RemAssign(t) => t.to_tokens(tokens),
-                BinOp::BitXorAssign(t) => t.to_tokens(tokens),
-                BinOp::BitAndAssign(t) => t.to_tokens(tokens),
-                BinOp::BitOrAssign(t) => t.to_tokens(tokens),
-                BinOp::ShlAssign(t) => t.to_tokens(tokens),
-                BinOp::ShrAssign(t) => t.to_tokens(tokens),
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for UnOp {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            match self {
-                UnOp::Deref(t) => t.to_tokens(tokens),
-                UnOp::Not(t) => t.to_tokens(tokens),
-                UnOp::Neg(t) => t.to_tokens(tokens),
-            }
-        }
-    }
-}
diff --git a/vendor/syn/src/parse.rs b/vendor/syn/src/parse.rs
deleted file mode 100644
index 13f488d..0000000
--- a/vendor/syn/src/parse.rs
+++ /dev/null
@@ -1,1386 +0,0 @@
-//! Parsing interface for parsing a token stream into a syntax tree node.
-//!
-//! Parsing in Syn is built on parser functions that take in a [`ParseStream`]
-//! and produce a [`Result<T>`] where `T` is some syntax tree node. Underlying
-//! these parser functions is a lower level mechanism built around the
-//! [`Cursor`] type. `Cursor` is a cheaply copyable cursor over a range of
-//! tokens in a token stream.
-//!
-//! [`Result<T>`]: Result
-//! [`Cursor`]: crate::buffer::Cursor
-//!
-//! # Example
-//!
-//! Here is a snippet of parsing code to get a feel for the style of the
-//! library. We define data structures for a subset of Rust syntax including
-//! enums (not shown) and structs, then provide implementations of the [`Parse`]
-//! trait to parse these syntax tree data structures from a token stream.
-//!
-//! Once `Parse` impls have been defined, they can be called conveniently from a
-//! procedural macro through [`parse_macro_input!`] as shown at the bottom of
-//! the snippet. If the caller provides syntactically invalid input to the
-//! procedural macro, they will receive a helpful compiler error message
-//! pointing out the exact token that triggered the failure to parse.
-//!
-//! [`parse_macro_input!`]: crate::parse_macro_input!
-//!
-//! ```
-//! # extern crate proc_macro;
-//! #
-//! use proc_macro::TokenStream;
-//! use syn::{braced, parse_macro_input, token, Field, Ident, Result, Token};
-//! use syn::parse::{Parse, ParseStream};
-//! use syn::punctuated::Punctuated;
-//!
-//! enum Item {
-//!     Struct(ItemStruct),
-//!     Enum(ItemEnum),
-//! }
-//!
-//! struct ItemStruct {
-//!     struct_token: Token![struct],
-//!     ident: Ident,
-//!     brace_token: token::Brace,
-//!     fields: Punctuated<Field, Token![,]>,
-//! }
-//! #
-//! # enum ItemEnum {}
-//!
-//! impl Parse for Item {
-//!     fn parse(input: ParseStream) -> Result<Self> {
-//!         let lookahead = input.lookahead1();
-//!         if lookahead.peek(Token![struct]) {
-//!             input.parse().map(Item::Struct)
-//!         } else if lookahead.peek(Token![enum]) {
-//!             input.parse().map(Item::Enum)
-//!         } else {
-//!             Err(lookahead.error())
-//!         }
-//!     }
-//! }
-//!
-//! impl Parse for ItemStruct {
-//!     fn parse(input: ParseStream) -> Result<Self> {
-//!         let content;
-//!         Ok(ItemStruct {
-//!             struct_token: input.parse()?,
-//!             ident: input.parse()?,
-//!             brace_token: braced!(content in input),
-//!             fields: content.parse_terminated(Field::parse_named, Token![,])?,
-//!         })
-//!     }
-//! }
-//! #
-//! # impl Parse for ItemEnum {
-//! #     fn parse(input: ParseStream) -> Result<Self> {
-//! #         unimplemented!()
-//! #     }
-//! # }
-//!
-//! # const IGNORE: &str = stringify! {
-//! #[proc_macro]
-//! # };
-//! pub fn my_macro(tokens: TokenStream) -> TokenStream {
-//!     let input = parse_macro_input!(tokens as Item);
-//!
-//!     /* ... */
-//! #   TokenStream::new()
-//! }
-//! ```
-//!
-//! # The `syn::parse*` functions
-//!
-//! The [`syn::parse`], [`syn::parse2`], and [`syn::parse_str`] functions serve
-//! as an entry point for parsing syntax tree nodes that can be parsed in an
-//! obvious default way. These functions can return any syntax tree node that
-//! implements the [`Parse`] trait, which includes most types in Syn.
-//!
-//! [`syn::parse`]: crate::parse()
-//! [`syn::parse2`]: crate::parse2()
-//! [`syn::parse_str`]: crate::parse_str()
-//!
-//! ```
-//! use syn::Type;
-//!
-//! # fn run_parser() -> syn::Result<()> {
-//! let t: Type = syn::parse_str("std::collections::HashMap<String, Value>")?;
-//! #     Ok(())
-//! # }
-//! #
-//! # run_parser().unwrap();
-//! ```
-//!
-//! The [`parse_quote!`] macro also uses this approach.
-//!
-//! [`parse_quote!`]: crate::parse_quote!
-//!
-//! # The `Parser` trait
-//!
-//! Some types can be parsed in several ways depending on context. For example
-//! an [`Attribute`] can be either "outer" like `#[...]` or "inner" like
-//! `#![...]` and parsing the wrong one would be a bug. Similarly [`Punctuated`]
-//! may or may not allow trailing punctuation, and parsing it the wrong way
-//! would either reject valid input or accept invalid input.
-//!
-//! [`Attribute`]: crate::Attribute
-//! [`Punctuated`]: crate::punctuated
-//!
-//! The `Parse` trait is not implemented in these cases because there is no good
-//! behavior to consider the default.
-//!
-//! ```compile_fail
-//! # extern crate proc_macro;
-//! #
-//! # use syn::punctuated::Punctuated;
-//! # use syn::{PathSegment, Result, Token};
-//! #
-//! # fn f(tokens: proc_macro::TokenStream) -> Result<()> {
-//! #
-//! // Can't parse `Punctuated` without knowing whether trailing punctuation
-//! // should be allowed in this context.
-//! let path: Punctuated<PathSegment, Token![::]> = syn::parse(tokens)?;
-//! #
-//! #     Ok(())
-//! # }
-//! ```
-//!
-//! In these cases the types provide a choice of parser functions rather than a
-//! single `Parse` implementation, and those parser functions can be invoked
-//! through the [`Parser`] trait.
-//!
-//!
-//! ```
-//! # extern crate proc_macro;
-//! #
-//! use proc_macro::TokenStream;
-//! use syn::parse::Parser;
-//! use syn::punctuated::Punctuated;
-//! use syn::{Attribute, Expr, PathSegment, Result, Token};
-//!
-//! fn call_some_parser_methods(input: TokenStream) -> Result<()> {
-//!     // Parse a nonempty sequence of path segments separated by `::` punctuation
-//!     // with no trailing punctuation.
-//!     let tokens = input.clone();
-//!     let parser = Punctuated::<PathSegment, Token![::]>::parse_separated_nonempty;
-//!     let _path = parser.parse(tokens)?;
-//!
-//!     // Parse a possibly empty sequence of expressions terminated by commas with
-//!     // an optional trailing punctuation.
-//!     let tokens = input.clone();
-//!     let parser = Punctuated::<Expr, Token![,]>::parse_terminated;
-//!     let _args = parser.parse(tokens)?;
-//!
-//!     // Parse zero or more outer attributes but not inner attributes.
-//!     let tokens = input.clone();
-//!     let parser = Attribute::parse_outer;
-//!     let _attrs = parser.parse(tokens)?;
-//!
-//!     Ok(())
-//! }
-//! ```
-
-#[path = "discouraged.rs"]
-pub mod discouraged;
-
-use crate::buffer::{Cursor, TokenBuffer};
-use crate::error;
-use crate::lookahead;
-#[cfg(feature = "proc-macro")]
-use crate::proc_macro;
-use crate::punctuated::Punctuated;
-use crate::token::Token;
-use proc_macro2::{self, Delimiter, Group, Literal, Punct, Span, TokenStream, TokenTree};
-use std::cell::Cell;
-use std::fmt::{self, Debug, Display};
-#[cfg(feature = "extra-traits")]
-use std::hash::{Hash, Hasher};
-use std::marker::PhantomData;
-use std::mem;
-use std::ops::Deref;
-use std::rc::Rc;
-use std::str::FromStr;
-
-pub use crate::error::{Error, Result};
-pub use crate::lookahead::{Lookahead1, Peek};
-
-/// Parsing interface implemented by all types that can be parsed in a default
-/// way from a token stream.
-///
-/// Refer to the [module documentation] for details about implementing and using
-/// the `Parse` trait.
-///
-/// [module documentation]: self
-pub trait Parse: Sized {
-    fn parse(input: ParseStream) -> Result<Self>;
-}
-
-/// Input to a Syn parser function.
-///
-/// See the methods of this type under the documentation of [`ParseBuffer`]. For
-/// an overview of parsing in Syn, refer to the [module documentation].
-///
-/// [module documentation]: self
-pub type ParseStream<'a> = &'a ParseBuffer<'a>;
-
-/// Cursor position within a buffered token stream.
-///
-/// This type is more commonly used through the type alias [`ParseStream`] which
-/// is an alias for `&ParseBuffer`.
-///
-/// `ParseStream` is the input type for all parser functions in Syn. They have
-/// the signature `fn(ParseStream) -> Result<T>`.
-///
-/// ## Calling a parser function
-///
-/// There is no public way to construct a `ParseBuffer`. Instead, if you are
-/// looking to invoke a parser function that requires `ParseStream` as input,
-/// you will need to go through one of the public parsing entry points.
-///
-/// - The [`parse_macro_input!`] macro if parsing input of a procedural macro;
-/// - One of [the `syn::parse*` functions][syn-parse]; or
-/// - A method of the [`Parser`] trait.
-///
-/// [`parse_macro_input!`]: crate::parse_macro_input!
-/// [syn-parse]: self#the-synparse-functions
-pub struct ParseBuffer<'a> {
-    scope: Span,
-    // Instead of Cell<Cursor<'a>> so that ParseBuffer<'a> is covariant in 'a.
-    // The rest of the code in this module needs to be careful that only a
-    // cursor derived from this `cell` is ever assigned to this `cell`.
-    //
-    // Cell<Cursor<'a>> cannot be covariant in 'a because then we could take a
-    // ParseBuffer<'a>, upcast to ParseBuffer<'short> for some lifetime shorter
-    // than 'a, and then assign a Cursor<'short> into the Cell.
-    //
-    // By extension, it would not be safe to expose an API that accepts a
-    // Cursor<'a> and trusts that it lives as long as the cursor currently in
-    // the cell.
-    cell: Cell<Cursor<'static>>,
-    marker: PhantomData<Cursor<'a>>,
-    unexpected: Cell<Option<Rc<Cell<Unexpected>>>>,
-}
-
-impl<'a> Drop for ParseBuffer<'a> {
-    fn drop(&mut self) {
-        if let Some(unexpected_span) = span_of_unexpected_ignoring_nones(self.cursor()) {
-            let (inner, old_span) = inner_unexpected(self);
-            if old_span.is_none() {
-                inner.set(Unexpected::Some(unexpected_span));
-            }
-        }
-    }
-}
-
-impl<'a> Display for ParseBuffer<'a> {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        Display::fmt(&self.cursor().token_stream(), f)
-    }
-}
-
-impl<'a> Debug for ParseBuffer<'a> {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        Debug::fmt(&self.cursor().token_stream(), f)
-    }
-}
-
-/// Cursor state associated with speculative parsing.
-///
-/// This type is the input of the closure provided to [`ParseStream::step`].
-///
-/// [`ParseStream::step`]: ParseBuffer::step
-///
-/// # Example
-///
-/// ```
-/// use proc_macro2::TokenTree;
-/// use syn::Result;
-/// use syn::parse::ParseStream;
-///
-/// // This function advances the stream past the next occurrence of `@`. If
-/// // no `@` is present in the stream, the stream position is unchanged and
-/// // an error is returned.
-/// fn skip_past_next_at(input: ParseStream) -> Result<()> {
-///     input.step(|cursor| {
-///         let mut rest = *cursor;
-///         while let Some((tt, next)) = rest.token_tree() {
-///             match &tt {
-///                 TokenTree::Punct(punct) if punct.as_char() == '@' => {
-///                     return Ok(((), next));
-///                 }
-///                 _ => rest = next,
-///             }
-///         }
-///         Err(cursor.error("no `@` was found after this point"))
-///     })
-/// }
-/// #
-/// # fn remainder_after_skipping_past_next_at(
-/// #     input: ParseStream,
-/// # ) -> Result<proc_macro2::TokenStream> {
-/// #     skip_past_next_at(input)?;
-/// #     input.parse()
-/// # }
-/// #
-/// # use syn::parse::Parser;
-/// # let remainder = remainder_after_skipping_past_next_at
-/// #     .parse_str("a @ b c")
-/// #     .unwrap();
-/// # assert_eq!(remainder.to_string(), "b c");
-/// ```
-pub struct StepCursor<'c, 'a> {
-    scope: Span,
-    // This field is covariant in 'c.
-    cursor: Cursor<'c>,
-    // This field is contravariant in 'c. Together these make StepCursor
-    // invariant in 'c. Also covariant in 'a. The user cannot cast 'c to a
-    // different lifetime but can upcast into a StepCursor with a shorter
-    // lifetime 'a.
-    //
-    // As long as we only ever construct a StepCursor for which 'c outlives 'a,
-    // this means if ever a StepCursor<'c, 'a> exists we are guaranteed that 'c
-    // outlives 'a.
-    marker: PhantomData<fn(Cursor<'c>) -> Cursor<'a>>,
-}
-
-impl<'c, 'a> Deref for StepCursor<'c, 'a> {
-    type Target = Cursor<'c>;
-
-    fn deref(&self) -> &Self::Target {
-        &self.cursor
-    }
-}
-
-impl<'c, 'a> Copy for StepCursor<'c, 'a> {}
-
-impl<'c, 'a> Clone for StepCursor<'c, 'a> {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
-
-impl<'c, 'a> StepCursor<'c, 'a> {
-    /// Triggers an error at the current position of the parse stream.
-    ///
-    /// The `ParseStream::step` invocation will return this same error without
-    /// advancing the stream state.
-    pub fn error<T: Display>(self, message: T) -> Error {
-        error::new_at(self.scope, self.cursor, message)
-    }
-}
-
-pub(crate) fn advance_step_cursor<'c, 'a>(proof: StepCursor<'c, 'a>, to: Cursor<'c>) -> Cursor<'a> {
-    // Refer to the comments within the StepCursor definition. We use the
-    // fact that a StepCursor<'c, 'a> exists as proof that 'c outlives 'a.
-    // Cursor is covariant in its lifetime parameter so we can cast a
-    // Cursor<'c> to one with the shorter lifetime Cursor<'a>.
-    let _ = proof;
-    unsafe { mem::transmute::<Cursor<'c>, Cursor<'a>>(to) }
-}
-
-pub(crate) fn new_parse_buffer(
-    scope: Span,
-    cursor: Cursor,
-    unexpected: Rc<Cell<Unexpected>>,
-) -> ParseBuffer {
-    ParseBuffer {
-        scope,
-        // See comment on `cell` in the struct definition.
-        cell: Cell::new(unsafe { mem::transmute::<Cursor, Cursor<'static>>(cursor) }),
-        marker: PhantomData,
-        unexpected: Cell::new(Some(unexpected)),
-    }
-}
-
-pub(crate) enum Unexpected {
-    None,
-    Some(Span),
-    Chain(Rc<Cell<Unexpected>>),
-}
-
-impl Default for Unexpected {
-    fn default() -> Self {
-        Unexpected::None
-    }
-}
-
-impl Clone for Unexpected {
-    fn clone(&self) -> Self {
-        match self {
-            Unexpected::None => Unexpected::None,
-            Unexpected::Some(span) => Unexpected::Some(*span),
-            Unexpected::Chain(next) => Unexpected::Chain(next.clone()),
-        }
-    }
-}
-
-// We call this on Cell<Unexpected> and Cell<Option<T>> where temporarily
-// swapping in a None is cheap.
-fn cell_clone<T: Default + Clone>(cell: &Cell<T>) -> T {
-    let prev = cell.take();
-    let ret = prev.clone();
-    cell.set(prev);
-    ret
-}
-
-fn inner_unexpected(buffer: &ParseBuffer) -> (Rc<Cell<Unexpected>>, Option<Span>) {
-    let mut unexpected = get_unexpected(buffer);
-    loop {
-        match cell_clone(&unexpected) {
-            Unexpected::None => return (unexpected, None),
-            Unexpected::Some(span) => return (unexpected, Some(span)),
-            Unexpected::Chain(next) => unexpected = next,
-        }
-    }
-}
-
-pub(crate) fn get_unexpected(buffer: &ParseBuffer) -> Rc<Cell<Unexpected>> {
-    cell_clone(&buffer.unexpected).unwrap()
-}
-
-fn span_of_unexpected_ignoring_nones(mut cursor: Cursor) -> Option<Span> {
-    if cursor.eof() {
-        return None;
-    }
-    while let Some((inner, _span, rest)) = cursor.group(Delimiter::None) {
-        if let Some(unexpected) = span_of_unexpected_ignoring_nones(inner) {
-            return Some(unexpected);
-        }
-        cursor = rest;
-    }
-    if cursor.eof() {
-        None
-    } else {
-        Some(cursor.span())
-    }
-}
-
-impl<'a> ParseBuffer<'a> {
-    /// Parses a syntax tree node of type `T`, advancing the position of our
-    /// parse stream past it.
-    pub fn parse<T: Parse>(&self) -> Result<T> {
-        T::parse(self)
-    }
-
-    /// Calls the given parser function to parse a syntax tree node of type `T`
-    /// from this stream.
-    ///
-    /// # Example
-    ///
-    /// The parser below invokes [`Attribute::parse_outer`] to parse a vector of
-    /// zero or more outer attributes.
-    ///
-    /// [`Attribute::parse_outer`]: crate::Attribute::parse_outer
-    ///
-    /// ```
-    /// use syn::{Attribute, Ident, Result, Token};
-    /// use syn::parse::{Parse, ParseStream};
-    ///
-    /// // Parses a unit struct with attributes.
-    /// //
-    /// //     #[path = "s.tmpl"]
-    /// //     struct S;
-    /// struct UnitStruct {
-    ///     attrs: Vec<Attribute>,
-    ///     struct_token: Token![struct],
-    ///     name: Ident,
-    ///     semi_token: Token![;],
-    /// }
-    ///
-    /// impl Parse for UnitStruct {
-    ///     fn parse(input: ParseStream) -> Result<Self> {
-    ///         Ok(UnitStruct {
-    ///             attrs: input.call(Attribute::parse_outer)?,
-    ///             struct_token: input.parse()?,
-    ///             name: input.parse()?,
-    ///             semi_token: input.parse()?,
-    ///         })
-    ///     }
-    /// }
-    /// ```
-    pub fn call<T>(&self, function: fn(ParseStream) -> Result<T>) -> Result<T> {
-        function(self)
-    }
-
-    /// Looks at the next token in the parse stream to determine whether it
-    /// matches the requested type of token.
-    ///
-    /// Does not advance the position of the parse stream.
-    ///
-    /// # Syntax
-    ///
-    /// Note that this method does not use turbofish syntax. Pass the peek type
-    /// inside of parentheses.
-    ///
-    /// - `input.peek(Token![struct])`
-    /// - `input.peek(Token![==])`
-    /// - `input.peek(syn::Ident)`&emsp;*(does not accept keywords)*
-    /// - `input.peek(syn::Ident::peek_any)`
-    /// - `input.peek(Lifetime)`
-    /// - `input.peek(token::Brace)`
-    ///
-    /// # Example
-    ///
-    /// In this example we finish parsing the list of supertraits when the next
-    /// token in the input is either `where` or an opening curly brace.
-    ///
-    /// ```
-    /// use syn::{braced, token, Generics, Ident, Result, Token, TypeParamBound};
-    /// use syn::parse::{Parse, ParseStream};
-    /// use syn::punctuated::Punctuated;
-    ///
-    /// // Parses a trait definition containing no associated items.
-    /// //
-    /// //     trait Marker<'de, T>: A + B<'de> where Box<T>: Clone {}
-    /// struct MarkerTrait {
-    ///     trait_token: Token![trait],
-    ///     ident: Ident,
-    ///     generics: Generics,
-    ///     colon_token: Option<Token![:]>,
-    ///     supertraits: Punctuated<TypeParamBound, Token![+]>,
-    ///     brace_token: token::Brace,
-    /// }
-    ///
-    /// impl Parse for MarkerTrait {
-    ///     fn parse(input: ParseStream) -> Result<Self> {
-    ///         let trait_token: Token![trait] = input.parse()?;
-    ///         let ident: Ident = input.parse()?;
-    ///         let mut generics: Generics = input.parse()?;
-    ///         let colon_token: Option<Token![:]> = input.parse()?;
-    ///
-    ///         let mut supertraits = Punctuated::new();
-    ///         if colon_token.is_some() {
-    ///             loop {
-    ///                 supertraits.push_value(input.parse()?);
-    ///                 if input.peek(Token![where]) || input.peek(token::Brace) {
-    ///                     break;
-    ///                 }
-    ///                 supertraits.push_punct(input.parse()?);
-    ///             }
-    ///         }
-    ///
-    ///         generics.where_clause = input.parse()?;
-    ///         let content;
-    ///         let empty_brace_token = braced!(content in input);
-    ///
-    ///         Ok(MarkerTrait {
-    ///             trait_token,
-    ///             ident,
-    ///             generics,
-    ///             colon_token,
-    ///             supertraits,
-    ///             brace_token: empty_brace_token,
-    ///         })
-    ///     }
-    /// }
-    /// ```
-    pub fn peek<T: Peek>(&self, token: T) -> bool {
-        let _ = token;
-        T::Token::peek(self.cursor())
-    }
-
-    /// Looks at the second-next token in the parse stream.
-    ///
-    /// This is commonly useful as a way to implement contextual keywords.
-    ///
-    /// # Example
-    ///
-    /// This example needs to use `peek2` because the symbol `union` is not a
-    /// keyword in Rust. We can't use just `peek` and decide to parse a union if
-    /// the very next token is `union`, because someone is free to write a `mod
-    /// union` and a macro invocation that looks like `union::some_macro! { ...
-    /// }`. In other words `union` is a contextual keyword.
-    ///
-    /// ```
-    /// use syn::{Ident, ItemUnion, Macro, Result, Token};
-    /// use syn::parse::{Parse, ParseStream};
-    ///
-    /// // Parses either a union or a macro invocation.
-    /// enum UnionOrMacro {
-    ///     // union MaybeUninit<T> { uninit: (), value: T }
-    ///     Union(ItemUnion),
-    ///     // lazy_static! { ... }
-    ///     Macro(Macro),
-    /// }
-    ///
-    /// impl Parse for UnionOrMacro {
-    ///     fn parse(input: ParseStream) -> Result<Self> {
-    ///         if input.peek(Token![union]) && input.peek2(Ident) {
-    ///             input.parse().map(UnionOrMacro::Union)
-    ///         } else {
-    ///             input.parse().map(UnionOrMacro::Macro)
-    ///         }
-    ///     }
-    /// }
-    /// ```
-    pub fn peek2<T: Peek>(&self, token: T) -> bool {
-        fn peek2(buffer: &ParseBuffer, peek: fn(Cursor) -> bool) -> bool {
-            if let Some(group) = buffer.cursor().group(Delimiter::None) {
-                if group.0.skip().map_or(false, peek) {
-                    return true;
-                }
-            }
-            buffer.cursor().skip().map_or(false, peek)
-        }
-
-        let _ = token;
-        peek2(self, T::Token::peek)
-    }
-
-    /// Looks at the third-next token in the parse stream.
-    pub fn peek3<T: Peek>(&self, token: T) -> bool {
-        fn peek3(buffer: &ParseBuffer, peek: fn(Cursor) -> bool) -> bool {
-            if let Some(group) = buffer.cursor().group(Delimiter::None) {
-                if group.0.skip().and_then(Cursor::skip).map_or(false, peek) {
-                    return true;
-                }
-            }
-            buffer
-                .cursor()
-                .skip()
-                .and_then(Cursor::skip)
-                .map_or(false, peek)
-        }
-
-        let _ = token;
-        peek3(self, T::Token::peek)
-    }
-
-    /// Parses zero or more occurrences of `T` separated by punctuation of type
-    /// `P`, with optional trailing punctuation.
-    ///
-    /// Parsing continues until the end of this parse stream. The entire content
-    /// of this parse stream must consist of `T` and `P`.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// # use quote::quote;
-    /// #
-    /// use syn::{parenthesized, token, Ident, Result, Token, Type};
-    /// use syn::parse::{Parse, ParseStream};
-    /// use syn::punctuated::Punctuated;
-    ///
-    /// // Parse a simplified tuple struct syntax like:
-    /// //
-    /// //     struct S(A, B);
-    /// struct TupleStruct {
-    ///     struct_token: Token![struct],
-    ///     ident: Ident,
-    ///     paren_token: token::Paren,
-    ///     fields: Punctuated<Type, Token![,]>,
-    ///     semi_token: Token![;],
-    /// }
-    ///
-    /// impl Parse for TupleStruct {
-    ///     fn parse(input: ParseStream) -> Result<Self> {
-    ///         let content;
-    ///         Ok(TupleStruct {
-    ///             struct_token: input.parse()?,
-    ///             ident: input.parse()?,
-    ///             paren_token: parenthesized!(content in input),
-    ///             fields: content.parse_terminated(Type::parse, Token![,])?,
-    ///             semi_token: input.parse()?,
-    ///         })
-    ///     }
-    /// }
-    /// #
-    /// # let input = quote! {
-    /// #     struct S(A, B);
-    /// # };
-    /// # syn::parse2::<TupleStruct>(input).unwrap();
-    /// ```
-    ///
-    /// # See also
-    ///
-    /// If your separator is anything more complicated than an invocation of the
-    /// `Token!` macro, this method won't be applicable and you can instead
-    /// directly use `Punctuated`'s parser functions: [`parse_terminated`],
-    /// [`parse_separated_nonempty`] etc.
-    ///
-    /// [`parse_terminated`]: Punctuated::parse_terminated
-    /// [`parse_separated_nonempty`]: Punctuated::parse_separated_nonempty
-    ///
-    /// ```
-    /// use syn::{custom_keyword, Expr, Result, Token};
-    /// use syn::parse::{Parse, ParseStream};
-    /// use syn::punctuated::Punctuated;
-    ///
-    /// mod kw {
-    ///     syn::custom_keyword!(fin);
-    /// }
-    ///
-    /// struct Fin(kw::fin, Token![;]);
-    ///
-    /// impl Parse for Fin {
-    ///     fn parse(input: ParseStream) -> Result<Self> {
-    ///         Ok(Self(input.parse()?, input.parse()?))
-    ///     }
-    /// }
-    ///
-    /// struct Thing {
-    ///     steps: Punctuated<Expr, Fin>,
-    /// }
-    ///
-    /// impl Parse for Thing {
-    ///     fn parse(input: ParseStream) -> Result<Self> {
-    /// # if true {
-    ///         Ok(Thing {
-    ///             steps: Punctuated::parse_terminated(input)?,
-    ///         })
-    /// # } else {
-    ///         // or equivalently, this means the same thing:
-    /// #       Ok(Thing {
-    ///             steps: input.call(Punctuated::parse_terminated)?,
-    /// #       })
-    /// # }
-    ///     }
-    /// }
-    /// ```
-    pub fn parse_terminated<T, P>(
-        &self,
-        parser: fn(ParseStream) -> Result<T>,
-        separator: P,
-    ) -> Result<Punctuated<T, P::Token>>
-    where
-        P: Peek,
-        P::Token: Parse,
-    {
-        let _ = separator;
-        Punctuated::parse_terminated_with(self, parser)
-    }
-
-    /// Returns whether there are tokens remaining in this stream.
-    ///
-    /// This method returns true at the end of the content of a set of
-    /// delimiters, as well as at the very end of the complete macro input.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use syn::{braced, token, Ident, Item, Result, Token};
-    /// use syn::parse::{Parse, ParseStream};
-    ///
-    /// // Parses a Rust `mod m { ... }` containing zero or more items.
-    /// struct Mod {
-    ///     mod_token: Token![mod],
-    ///     name: Ident,
-    ///     brace_token: token::Brace,
-    ///     items: Vec<Item>,
-    /// }
-    ///
-    /// impl Parse for Mod {
-    ///     fn parse(input: ParseStream) -> Result<Self> {
-    ///         let content;
-    ///         Ok(Mod {
-    ///             mod_token: input.parse()?,
-    ///             name: input.parse()?,
-    ///             brace_token: braced!(content in input),
-    ///             items: {
-    ///                 let mut items = Vec::new();
-    ///                 while !content.is_empty() {
-    ///                     items.push(content.parse()?);
-    ///                 }
-    ///                 items
-    ///             },
-    ///         })
-    ///     }
-    /// }
-    /// ```
-    pub fn is_empty(&self) -> bool {
-        self.cursor().eof()
-    }
-
-    /// Constructs a helper for peeking at the next token in this stream and
-    /// building an error message if it is not one of a set of expected tokens.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use syn::{ConstParam, Ident, Lifetime, LifetimeParam, Result, Token, TypeParam};
-    /// use syn::parse::{Parse, ParseStream};
-    ///
-    /// // A generic parameter, a single one of the comma-separated elements inside
-    /// // angle brackets in:
-    /// //
-    /// //     fn f<T: Clone, 'a, 'b: 'a, const N: usize>() { ... }
-    /// //
-    /// // On invalid input, lookahead gives us a reasonable error message.
-    /// //
-    /// //     error: expected one of: identifier, lifetime, `const`
-    /// //       |
-    /// //     5 |     fn f<!Sized>() {}
-    /// //       |          ^
-    /// enum GenericParam {
-    ///     Type(TypeParam),
-    ///     Lifetime(LifetimeParam),
-    ///     Const(ConstParam),
-    /// }
-    ///
-    /// impl Parse for GenericParam {
-    ///     fn parse(input: ParseStream) -> Result<Self> {
-    ///         let lookahead = input.lookahead1();
-    ///         if lookahead.peek(Ident) {
-    ///             input.parse().map(GenericParam::Type)
-    ///         } else if lookahead.peek(Lifetime) {
-    ///             input.parse().map(GenericParam::Lifetime)
-    ///         } else if lookahead.peek(Token![const]) {
-    ///             input.parse().map(GenericParam::Const)
-    ///         } else {
-    ///             Err(lookahead.error())
-    ///         }
-    ///     }
-    /// }
-    /// ```
-    pub fn lookahead1(&self) -> Lookahead1<'a> {
-        lookahead::new(self.scope, self.cursor())
-    }
-
-    /// Forks a parse stream so that parsing tokens out of either the original
-    /// or the fork does not advance the position of the other.
-    ///
-    /// # Performance
-    ///
-    /// Forking a parse stream is a cheap fixed amount of work and does not
-    /// involve copying token buffers. Where you might hit performance problems
-    /// is if your macro ends up parsing a large amount of content more than
-    /// once.
-    ///
-    /// ```
-    /// # use syn::{Expr, Result};
-    /// # use syn::parse::ParseStream;
-    /// #
-    /// # fn bad(input: ParseStream) -> Result<Expr> {
-    /// // Do not do this.
-    /// if input.fork().parse::<Expr>().is_ok() {
-    ///     return input.parse::<Expr>();
-    /// }
-    /// # unimplemented!()
-    /// # }
-    /// ```
-    ///
-    /// As a rule, avoid parsing an unbounded amount of tokens out of a forked
-    /// parse stream. Only use a fork when the amount of work performed against
-    /// the fork is small and bounded.
-    ///
-    /// When complex speculative parsing against the forked stream is
-    /// unavoidable, use [`parse::discouraged::Speculative`] to advance the
-    /// original stream once the fork's parse is determined to have been
-    /// successful.
-    ///
-    /// For a lower level way to perform speculative parsing at the token level,
-    /// consider using [`ParseStream::step`] instead.
-    ///
-    /// [`parse::discouraged::Speculative`]: discouraged::Speculative
-    /// [`ParseStream::step`]: ParseBuffer::step
-    ///
-    /// # Example
-    ///
-    /// The parse implementation shown here parses possibly restricted `pub`
-    /// visibilities.
-    ///
-    /// - `pub`
-    /// - `pub(crate)`
-    /// - `pub(self)`
-    /// - `pub(super)`
-    /// - `pub(in some::path)`
-    ///
-    /// To handle the case of visibilities inside of tuple structs, the parser
-    /// needs to distinguish parentheses that specify visibility restrictions
-    /// from parentheses that form part of a tuple type.
-    ///
-    /// ```
-    /// # struct A;
-    /// # struct B;
-    /// # struct C;
-    /// #
-    /// struct S(pub(crate) A, pub (B, C));
-    /// ```
-    ///
-    /// In this example input the first tuple struct element of `S` has
-    /// `pub(crate)` visibility while the second tuple struct element has `pub`
-    /// visibility; the parentheses around `(B, C)` are part of the type rather
-    /// than part of a visibility restriction.
-    ///
-    /// The parser uses a forked parse stream to check the first token inside of
-    /// parentheses after the `pub` keyword. This is a small bounded amount of
-    /// work performed against the forked parse stream.
-    ///
-    /// ```
-    /// use syn::{parenthesized, token, Ident, Path, Result, Token};
-    /// use syn::ext::IdentExt;
-    /// use syn::parse::{Parse, ParseStream};
-    ///
-    /// struct PubVisibility {
-    ///     pub_token: Token![pub],
-    ///     restricted: Option<Restricted>,
-    /// }
-    ///
-    /// struct Restricted {
-    ///     paren_token: token::Paren,
-    ///     in_token: Option<Token![in]>,
-    ///     path: Path,
-    /// }
-    ///
-    /// impl Parse for PubVisibility {
-    ///     fn parse(input: ParseStream) -> Result<Self> {
-    ///         let pub_token: Token![pub] = input.parse()?;
-    ///
-    ///         if input.peek(token::Paren) {
-    ///             let ahead = input.fork();
-    ///             let mut content;
-    ///             parenthesized!(content in ahead);
-    ///
-    ///             if content.peek(Token![crate])
-    ///                 || content.peek(Token![self])
-    ///                 || content.peek(Token![super])
-    ///             {
-    ///                 return Ok(PubVisibility {
-    ///                     pub_token,
-    ///                     restricted: Some(Restricted {
-    ///                         paren_token: parenthesized!(content in input),
-    ///                         in_token: None,
-    ///                         path: Path::from(content.call(Ident::parse_any)?),
-    ///                     }),
-    ///                 });
-    ///             } else if content.peek(Token![in]) {
-    ///                 return Ok(PubVisibility {
-    ///                     pub_token,
-    ///                     restricted: Some(Restricted {
-    ///                         paren_token: parenthesized!(content in input),
-    ///                         in_token: Some(content.parse()?),
-    ///                         path: content.call(Path::parse_mod_style)?,
-    ///                     }),
-    ///                 });
-    ///             }
-    ///         }
-    ///
-    ///         Ok(PubVisibility {
-    ///             pub_token,
-    ///             restricted: None,
-    ///         })
-    ///     }
-    /// }
-    /// ```
-    pub fn fork(&self) -> Self {
-        ParseBuffer {
-            scope: self.scope,
-            cell: self.cell.clone(),
-            marker: PhantomData,
-            // Not the parent's unexpected. Nothing cares whether the clone
-            // parses all the way unless we `advance_to`.
-            unexpected: Cell::new(Some(Rc::new(Cell::new(Unexpected::None)))),
-        }
-    }
-
-    /// Triggers an error at the current position of the parse stream.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use syn::{Expr, Result, Token};
-    /// use syn::parse::{Parse, ParseStream};
-    ///
-    /// // Some kind of loop: `while` or `for` or `loop`.
-    /// struct Loop {
-    ///     expr: Expr,
-    /// }
-    ///
-    /// impl Parse for Loop {
-    ///     fn parse(input: ParseStream) -> Result<Self> {
-    ///         if input.peek(Token![while])
-    ///             || input.peek(Token![for])
-    ///             || input.peek(Token![loop])
-    ///         {
-    ///             Ok(Loop {
-    ///                 expr: input.parse()?,
-    ///             })
-    ///         } else {
-    ///             Err(input.error("expected some kind of loop"))
-    ///         }
-    ///     }
-    /// }
-    /// ```
-    pub fn error<T: Display>(&self, message: T) -> Error {
-        error::new_at(self.scope, self.cursor(), message)
-    }
-
-    /// Speculatively parses tokens from this parse stream, advancing the
-    /// position of this stream only if parsing succeeds.
-    ///
-    /// This is a powerful low-level API used for defining the `Parse` impls of
-    /// the basic built-in token types. It is not something that will be used
-    /// widely outside of the Syn codebase.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use proc_macro2::TokenTree;
-    /// use syn::Result;
-    /// use syn::parse::ParseStream;
-    ///
-    /// // This function advances the stream past the next occurrence of `@`. If
-    /// // no `@` is present in the stream, the stream position is unchanged and
-    /// // an error is returned.
-    /// fn skip_past_next_at(input: ParseStream) -> Result<()> {
-    ///     input.step(|cursor| {
-    ///         let mut rest = *cursor;
-    ///         while let Some((tt, next)) = rest.token_tree() {
-    ///             match &tt {
-    ///                 TokenTree::Punct(punct) if punct.as_char() == '@' => {
-    ///                     return Ok(((), next));
-    ///                 }
-    ///                 _ => rest = next,
-    ///             }
-    ///         }
-    ///         Err(cursor.error("no `@` was found after this point"))
-    ///     })
-    /// }
-    /// #
-    /// # fn remainder_after_skipping_past_next_at(
-    /// #     input: ParseStream,
-    /// # ) -> Result<proc_macro2::TokenStream> {
-    /// #     skip_past_next_at(input)?;
-    /// #     input.parse()
-    /// # }
-    /// #
-    /// # use syn::parse::Parser;
-    /// # let remainder = remainder_after_skipping_past_next_at
-    /// #     .parse_str("a @ b c")
-    /// #     .unwrap();
-    /// # assert_eq!(remainder.to_string(), "b c");
-    /// ```
-    pub fn step<F, R>(&self, function: F) -> Result<R>
-    where
-        F: for<'c> FnOnce(StepCursor<'c, 'a>) -> Result<(R, Cursor<'c>)>,
-    {
-        // Since the user's function is required to work for any 'c, we know
-        // that the Cursor<'c> they return is either derived from the input
-        // StepCursor<'c, 'a> or from a Cursor<'static>.
-        //
-        // It would not be legal to write this function without the invariant
-        // lifetime 'c in StepCursor<'c, 'a>. If this function were written only
-        // in terms of 'a, the user could take our ParseBuffer<'a>, upcast it to
-        // a ParseBuffer<'short> which some shorter lifetime than 'a, invoke
-        // `step` on their ParseBuffer<'short> with a closure that returns
-        // Cursor<'short>, and we would wrongly write that Cursor<'short> into
-        // the Cell intended to hold Cursor<'a>.
-        //
-        // In some cases it may be necessary for R to contain a Cursor<'a>.
-        // Within Syn we solve this using `advance_step_cursor` which uses the
-        // existence of a StepCursor<'c, 'a> as proof that it is safe to cast
-        // from Cursor<'c> to Cursor<'a>. If needed outside of Syn, it would be
-        // safe to expose that API as a method on StepCursor.
-        let (node, rest) = function(StepCursor {
-            scope: self.scope,
-            cursor: self.cell.get(),
-            marker: PhantomData,
-        })?;
-        self.cell.set(rest);
-        Ok(node)
-    }
-
-    /// Returns the `Span` of the next token in the parse stream, or
-    /// `Span::call_site()` if this parse stream has completely exhausted its
-    /// input `TokenStream`.
-    pub fn span(&self) -> Span {
-        let cursor = self.cursor();
-        if cursor.eof() {
-            self.scope
-        } else {
-            crate::buffer::open_span_of_group(cursor)
-        }
-    }
-
-    /// Provides low-level access to the token representation underlying this
-    /// parse stream.
-    ///
-    /// Cursors are immutable so no operations you perform against the cursor
-    /// will affect the state of this parse stream.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use proc_macro2::TokenStream;
-    /// use syn::buffer::Cursor;
-    /// use syn::parse::{ParseStream, Result};
-    ///
-    /// // Run a parser that returns T, but get its output as TokenStream instead of T.
-    /// // This works without T needing to implement ToTokens.
-    /// fn recognize_token_stream<T>(
-    ///     recognizer: fn(ParseStream) -> Result<T>,
-    /// ) -> impl Fn(ParseStream) -> Result<TokenStream> {
-    ///     move |input| {
-    ///         let begin = input.cursor();
-    ///         recognizer(input)?;
-    ///         let end = input.cursor();
-    ///         Ok(tokens_between(begin, end))
-    ///     }
-    /// }
-    ///
-    /// // Collect tokens between two cursors as a TokenStream.
-    /// fn tokens_between(begin: Cursor, end: Cursor) -> TokenStream {
-    ///     assert!(begin <= end);
-    ///
-    ///     let mut cursor = begin;
-    ///     let mut tokens = TokenStream::new();
-    ///     while cursor < end {
-    ///         let (token, next) = cursor.token_tree().unwrap();
-    ///         tokens.extend(std::iter::once(token));
-    ///         cursor = next;
-    ///     }
-    ///     tokens
-    /// }
-    ///
-    /// fn main() {
-    ///     use quote::quote;
-    ///     use syn::parse::{Parse, Parser};
-    ///     use syn::Token;
-    ///
-    ///     // Parse syn::Type as a TokenStream, surrounded by angle brackets.
-    ///     fn example(input: ParseStream) -> Result<TokenStream> {
-    ///         let _langle: Token![<] = input.parse()?;
-    ///         let ty = recognize_token_stream(syn::Type::parse)(input)?;
-    ///         let _rangle: Token![>] = input.parse()?;
-    ///         Ok(ty)
-    ///     }
-    ///
-    ///     let tokens = quote! { <fn() -> u8> };
-    ///     println!("{}", example.parse2(tokens).unwrap());
-    /// }
-    /// ```
-    pub fn cursor(&self) -> Cursor<'a> {
-        self.cell.get()
-    }
-
-    fn check_unexpected(&self) -> Result<()> {
-        match inner_unexpected(self).1 {
-            Some(span) => Err(Error::new(span, "unexpected token")),
-            None => Ok(()),
-        }
-    }
-}
-
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-impl<T: Parse> Parse for Box<T> {
-    fn parse(input: ParseStream) -> Result<Self> {
-        input.parse().map(Box::new)
-    }
-}
-
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-impl<T: Parse + Token> Parse for Option<T> {
-    fn parse(input: ParseStream) -> Result<Self> {
-        if T::peek(input.cursor()) {
-            Ok(Some(input.parse()?))
-        } else {
-            Ok(None)
-        }
-    }
-}
-
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-impl Parse for TokenStream {
-    fn parse(input: ParseStream) -> Result<Self> {
-        input.step(|cursor| Ok((cursor.token_stream(), Cursor::empty())))
-    }
-}
-
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-impl Parse for TokenTree {
-    fn parse(input: ParseStream) -> Result<Self> {
-        input.step(|cursor| match cursor.token_tree() {
-            Some((tt, rest)) => Ok((tt, rest)),
-            None => Err(cursor.error("expected token tree")),
-        })
-    }
-}
-
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-impl Parse for Group {
-    fn parse(input: ParseStream) -> Result<Self> {
-        input.step(|cursor| {
-            if let Some((group, rest)) = cursor.any_group_token() {
-                if group.delimiter() != Delimiter::None {
-                    return Ok((group, rest));
-                }
-            }
-            Err(cursor.error("expected group token"))
-        })
-    }
-}
-
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-impl Parse for Punct {
-    fn parse(input: ParseStream) -> Result<Self> {
-        input.step(|cursor| match cursor.punct() {
-            Some((punct, rest)) => Ok((punct, rest)),
-            None => Err(cursor.error("expected punctuation token")),
-        })
-    }
-}
-
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-impl Parse for Literal {
-    fn parse(input: ParseStream) -> Result<Self> {
-        input.step(|cursor| match cursor.literal() {
-            Some((literal, rest)) => Ok((literal, rest)),
-            None => Err(cursor.error("expected literal token")),
-        })
-    }
-}
-
-/// Parser that can parse Rust tokens into a particular syntax tree node.
-///
-/// Refer to the [module documentation] for details about parsing in Syn.
-///
-/// [module documentation]: self
-pub trait Parser: Sized {
-    type Output;
-
-    /// Parse a proc-macro2 token stream into the chosen syntax tree node.
-    ///
-    /// This function will check that the input is fully parsed. If there are
-    /// any unparsed tokens at the end of the stream, an error is returned.
-    fn parse2(self, tokens: TokenStream) -> Result<Self::Output>;
-
-    /// Parse tokens of source code into the chosen syntax tree node.
-    ///
-    /// This function will check that the input is fully parsed. If there are
-    /// any unparsed tokens at the end of the stream, an error is returned.
-    #[cfg(feature = "proc-macro")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "proc-macro")))]
-    fn parse(self, tokens: proc_macro::TokenStream) -> Result<Self::Output> {
-        self.parse2(proc_macro2::TokenStream::from(tokens))
-    }
-
-    /// Parse a string of Rust code into the chosen syntax tree node.
-    ///
-    /// This function will check that the input is fully parsed. If there are
-    /// any unparsed tokens at the end of the string, an error is returned.
-    ///
-    /// # Hygiene
-    ///
-    /// Every span in the resulting syntax tree will be set to resolve at the
-    /// macro call site.
-    fn parse_str(self, s: &str) -> Result<Self::Output> {
-        self.parse2(proc_macro2::TokenStream::from_str(s)?)
-    }
-
-    // Not public API.
-    #[doc(hidden)]
-    #[cfg(any(feature = "full", feature = "derive"))]
-    fn __parse_scoped(self, scope: Span, tokens: TokenStream) -> Result<Self::Output> {
-        let _ = scope;
-        self.parse2(tokens)
-    }
-}
-
-fn tokens_to_parse_buffer(tokens: &TokenBuffer) -> ParseBuffer {
-    let scope = Span::call_site();
-    let cursor = tokens.begin();
-    let unexpected = Rc::new(Cell::new(Unexpected::None));
-    new_parse_buffer(scope, cursor, unexpected)
-}
-
-impl<F, T> Parser for F
-where
-    F: FnOnce(ParseStream) -> Result<T>,
-{
-    type Output = T;
-
-    fn parse2(self, tokens: TokenStream) -> Result<T> {
-        let buf = TokenBuffer::new2(tokens);
-        let state = tokens_to_parse_buffer(&buf);
-        let node = self(&state)?;
-        state.check_unexpected()?;
-        if let Some(unexpected_span) = span_of_unexpected_ignoring_nones(state.cursor()) {
-            Err(Error::new(unexpected_span, "unexpected token"))
-        } else {
-            Ok(node)
-        }
-    }
-
-    #[cfg(any(feature = "full", feature = "derive"))]
-    fn __parse_scoped(self, scope: Span, tokens: TokenStream) -> Result<Self::Output> {
-        let buf = TokenBuffer::new2(tokens);
-        let cursor = buf.begin();
-        let unexpected = Rc::new(Cell::new(Unexpected::None));
-        let state = new_parse_buffer(scope, cursor, unexpected);
-        let node = self(&state)?;
-        state.check_unexpected()?;
-        if let Some(unexpected_span) = span_of_unexpected_ignoring_nones(state.cursor()) {
-            Err(Error::new(unexpected_span, "unexpected token"))
-        } else {
-            Ok(node)
-        }
-    }
-}
-
-#[cfg(any(feature = "full", feature = "derive"))]
-pub(crate) fn parse_scoped<F: Parser>(f: F, scope: Span, tokens: TokenStream) -> Result<F::Output> {
-    f.__parse_scoped(scope, tokens)
-}
-
-/// An empty syntax tree node that consumes no tokens when parsed.
-///
-/// This is useful for attribute macros that want to ensure they are not
-/// provided any attribute args.
-///
-/// ```
-/// # extern crate proc_macro;
-/// #
-/// use proc_macro::TokenStream;
-/// use syn::parse_macro_input;
-/// use syn::parse::Nothing;
-///
-/// # const IGNORE: &str = stringify! {
-/// #[proc_macro_attribute]
-/// # };
-/// pub fn my_attr(args: TokenStream, input: TokenStream) -> TokenStream {
-///     parse_macro_input!(args as Nothing);
-///
-///     /* ... */
-/// #   TokenStream::new()
-/// }
-/// ```
-///
-/// ```text
-/// error: unexpected token
-///  --> src/main.rs:3:19
-///   |
-/// 3 | #[my_attr(asdf)]
-///   |           ^^^^
-/// ```
-pub struct Nothing;
-
-impl Parse for Nothing {
-    fn parse(_input: ParseStream) -> Result<Self> {
-        Ok(Nothing)
-    }
-}
-
-#[cfg(feature = "extra-traits")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Nothing {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        f.write_str("Nothing")
-    }
-}
-
-#[cfg(feature = "extra-traits")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Eq for Nothing {}
-
-#[cfg(feature = "extra-traits")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Nothing {
-    fn eq(&self, _other: &Self) -> bool {
-        true
-    }
-}
-
-#[cfg(feature = "extra-traits")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Nothing {
-    fn hash<H: Hasher>(&self, _state: &mut H) {}
-}
diff --git a/vendor/syn/src/parse_macro_input.rs b/vendor/syn/src/parse_macro_input.rs
deleted file mode 100644
index 6f1562f..0000000
--- a/vendor/syn/src/parse_macro_input.rs
+++ /dev/null
@@ -1,128 +0,0 @@
-/// Parse the input TokenStream of a macro, triggering a compile error if the
-/// tokens fail to parse.
-///
-/// Refer to the [`parse` module] documentation for more details about parsing
-/// in Syn.
-///
-/// [`parse` module]: mod@crate::parse
-///
-/// <br>
-///
-/// # Intended usage
-///
-/// This macro must be called from a function that returns
-/// `proc_macro::TokenStream`. Usually this will be your proc macro entry point,
-/// the function that has the #\[proc_macro\] / #\[proc_macro_derive\] /
-/// #\[proc_macro_attribute\] attribute.
-///
-/// ```
-/// # extern crate proc_macro;
-/// #
-/// use proc_macro::TokenStream;
-/// use syn::{parse_macro_input, Result};
-/// use syn::parse::{Parse, ParseStream};
-///
-/// struct MyMacroInput {
-///     /* ... */
-/// }
-///
-/// impl Parse for MyMacroInput {
-///     fn parse(input: ParseStream) -> Result<Self> {
-///         /* ... */
-/// #       Ok(MyMacroInput {})
-///     }
-/// }
-///
-/// # const IGNORE: &str = stringify! {
-/// #[proc_macro]
-/// # };
-/// pub fn my_macro(tokens: TokenStream) -> TokenStream {
-///     let input = parse_macro_input!(tokens as MyMacroInput);
-///
-///     /* ... */
-/// #   TokenStream::new()
-/// }
-/// ```
-///
-/// <br>
-///
-/// # Usage with Parser
-///
-/// This macro can also be used with the [`Parser` trait] for types that have
-/// multiple ways that they can be parsed.
-///
-/// [`Parser` trait]: crate::parse::Parser
-///
-/// ```
-/// # extern crate proc_macro;
-/// #
-/// # use proc_macro::TokenStream;
-/// # use syn::{parse_macro_input, Result};
-/// # use syn::parse::ParseStream;
-/// #
-/// # struct MyMacroInput {}
-/// #
-/// impl MyMacroInput {
-///     fn parse_alternate(input: ParseStream) -> Result<Self> {
-///         /* ... */
-/// #       Ok(MyMacroInput {})
-///     }
-/// }
-///
-/// # const IGNORE: &str = stringify! {
-/// #[proc_macro]
-/// # };
-/// pub fn my_macro(tokens: TokenStream) -> TokenStream {
-///     let input = parse_macro_input!(tokens with MyMacroInput::parse_alternate);
-///
-///     /* ... */
-/// #   TokenStream::new()
-/// }
-/// ```
-///
-/// <br>
-///
-/// # Expansion
-///
-/// `parse_macro_input!($variable as $Type)` expands to something like:
-///
-/// ```no_run
-/// # extern crate proc_macro;
-/// #
-/// # macro_rules! doc_test {
-/// #     ($variable:ident as $Type:ty) => {
-/// match syn::parse::<$Type>($variable) {
-///     Ok(syntax_tree) => syntax_tree,
-///     Err(err) => return proc_macro::TokenStream::from(err.to_compile_error()),
-/// }
-/// #     };
-/// # }
-/// #
-/// # fn test(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
-/// #     let _ = doc_test!(input as syn::Ident);
-/// #     proc_macro::TokenStream::new()
-/// # }
-/// ```
-#[macro_export]
-#[cfg_attr(doc_cfg, doc(cfg(all(feature = "parsing", feature = "proc-macro"))))]
-macro_rules! parse_macro_input {
-    ($tokenstream:ident as $ty:ty) => {
-        match $crate::parse::<$ty>($tokenstream) {
-            $crate::__private::Ok(data) => data,
-            $crate::__private::Err(err) => {
-                return $crate::__private::TokenStream::from(err.to_compile_error());
-            }
-        }
-    };
-    ($tokenstream:ident with $parser:path) => {
-        match $crate::parse::Parser::parse($parser, $tokenstream) {
-            $crate::__private::Ok(data) => data,
-            $crate::__private::Err(err) => {
-                return $crate::__private::TokenStream::from(err.to_compile_error());
-            }
-        }
-    };
-    ($tokenstream:ident) => {
-        $crate::parse_macro_input!($tokenstream as _)
-    };
-}
diff --git a/vendor/syn/src/parse_quote.rs b/vendor/syn/src/parse_quote.rs
deleted file mode 100644
index 18de474..0000000
--- a/vendor/syn/src/parse_quote.rs
+++ /dev/null
@@ -1,209 +0,0 @@
-/// Quasi-quotation macro that accepts input like the [`quote!`] macro but uses
-/// type inference to figure out a return type for those tokens.
-///
-/// [`quote!`]: https://docs.rs/quote/1.0/quote/index.html
-///
-/// The return type can be any syntax tree node that implements the [`Parse`]
-/// trait.
-///
-/// [`Parse`]: crate::parse::Parse
-///
-/// ```
-/// use quote::quote;
-/// use syn::{parse_quote, Stmt};
-///
-/// fn main() {
-///     let name = quote!(v);
-///     let ty = quote!(u8);
-///
-///     let stmt: Stmt = parse_quote! {
-///         let #name: #ty = Default::default();
-///     };
-///
-///     println!("{:#?}", stmt);
-/// }
-/// ```
-///
-/// *This macro is available only if Syn is built with both the `"parsing"` and
-/// `"printing"` features.*
-///
-/// # Example
-///
-/// The following helper function adds a bound `T: HeapSize` to every type
-/// parameter `T` in the input generics.
-///
-/// ```
-/// use syn::{parse_quote, Generics, GenericParam};
-///
-/// // Add a bound `T: HeapSize` to every type parameter T.
-/// fn add_trait_bounds(mut generics: Generics) -> Generics {
-///     for param in &mut generics.params {
-///         if let GenericParam::Type(type_param) = param {
-///             type_param.bounds.push(parse_quote!(HeapSize));
-///         }
-///     }
-///     generics
-/// }
-/// ```
-///
-/// # Special cases
-///
-/// This macro can parse the following additional types as a special case even
-/// though they do not implement the `Parse` trait.
-///
-/// - [`Attribute`] — parses one attribute, allowing either outer like `#[...]`
-///   or inner like `#![...]`
-/// - [`Punctuated<T, P>`] — parses zero or more `T` separated by punctuation
-///   `P` with optional trailing punctuation
-/// - [`Vec<Stmt>`] — parses the same as `Block::parse_within`
-///
-/// [`Vec<Stmt>`]: Block::parse_within
-///
-/// # Panics
-///
-/// Panics if the tokens fail to parse as the expected syntax tree type. The
-/// caller is responsible for ensuring that the input tokens are syntactically
-/// valid.
-#[cfg_attr(doc_cfg, doc(cfg(all(feature = "parsing", feature = "printing"))))]
-#[macro_export]
-macro_rules! parse_quote {
-    ($($tt:tt)*) => {
-        $crate::__private::parse_quote($crate::__private::quote::quote!($($tt)*))
-    };
-}
-
-/// This macro is [`parse_quote!`] + [`quote_spanned!`][quote::quote_spanned].
-///
-/// Please refer to each of their documentation.
-///
-/// # Example
-///
-/// ```
-/// use quote::{quote, quote_spanned};
-/// use syn::spanned::Spanned;
-/// use syn::{parse_quote_spanned, ReturnType, Signature};
-///
-/// // Changes `fn()` to `fn() -> Pin<Box<dyn Future<Output = ()>>>`,
-/// // and `fn() -> T` to `fn() -> Pin<Box<dyn Future<Output = T>>>`,
-/// // without introducing any call_site() spans.
-/// fn make_ret_pinned_future(sig: &mut Signature) {
-///     let ret = match &sig.output {
-///         ReturnType::Default => quote_spanned!(sig.paren_token.span=> ()),
-///         ReturnType::Type(_, ret) => quote!(#ret),
-///     };
-///     sig.output = parse_quote_spanned! {ret.span()=>
-///         -> ::std::pin::Pin<::std::boxed::Box<dyn ::std::future::Future<Output = #ret>>>
-///     };
-/// }
-/// ```
-#[cfg_attr(doc_cfg, doc(cfg(all(feature = "parsing", feature = "printing"))))]
-#[macro_export]
-macro_rules! parse_quote_spanned {
-    ($span:expr=> $($tt:tt)*) => {
-        $crate::__private::parse_quote($crate::__private::quote::quote_spanned!($span=> $($tt)*))
-    };
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// Can parse any type that implements Parse.
-
-use crate::parse::{Parse, ParseStream, Parser, Result};
-use proc_macro2::TokenStream;
-
-// Not public API.
-#[doc(hidden)]
-pub fn parse<T: ParseQuote>(token_stream: TokenStream) -> T {
-    let parser = T::parse;
-    match parser.parse2(token_stream) {
-        Ok(t) => t,
-        Err(err) => panic!("{}", err),
-    }
-}
-
-#[doc(hidden)]
-pub trait ParseQuote: Sized {
-    fn parse(input: ParseStream) -> Result<Self>;
-}
-
-impl<T: Parse> ParseQuote for T {
-    fn parse(input: ParseStream) -> Result<Self> {
-        <T as Parse>::parse(input)
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// Any other types that we want `parse_quote!` to be able to parse.
-
-use crate::punctuated::Punctuated;
-#[cfg(any(feature = "full", feature = "derive"))]
-use crate::{attr, Attribute, Field, FieldMutability, Ident, Type, Visibility};
-#[cfg(feature = "full")]
-use crate::{Block, Pat, Stmt};
-
-#[cfg(any(feature = "full", feature = "derive"))]
-impl ParseQuote for Attribute {
-    fn parse(input: ParseStream) -> Result<Self> {
-        if input.peek(Token![#]) && input.peek2(Token![!]) {
-            attr::parsing::single_parse_inner(input)
-        } else {
-            attr::parsing::single_parse_outer(input)
-        }
-    }
-}
-
-#[cfg(any(feature = "full", feature = "derive"))]
-impl ParseQuote for Field {
-    fn parse(input: ParseStream) -> Result<Self> {
-        let attrs = input.call(Attribute::parse_outer)?;
-        let vis: Visibility = input.parse()?;
-
-        let ident: Option<Ident>;
-        let colon_token: Option<Token![:]>;
-        let is_named = input.peek(Ident) && input.peek2(Token![:]) && !input.peek2(Token![::]);
-        if is_named {
-            ident = Some(input.parse()?);
-            colon_token = Some(input.parse()?);
-        } else {
-            ident = None;
-            colon_token = None;
-        }
-
-        let ty: Type = input.parse()?;
-
-        Ok(Field {
-            attrs,
-            vis,
-            mutability: FieldMutability::None,
-            ident,
-            colon_token,
-            ty,
-        })
-    }
-}
-
-#[cfg(feature = "full")]
-impl ParseQuote for Pat {
-    fn parse(input: ParseStream) -> Result<Self> {
-        Pat::parse_multi_with_leading_vert(input)
-    }
-}
-
-#[cfg(feature = "full")]
-impl ParseQuote for Box<Pat> {
-    fn parse(input: ParseStream) -> Result<Self> {
-        <Pat as ParseQuote>::parse(input).map(Box::new)
-    }
-}
-
-impl<T: Parse, P: Parse> ParseQuote for Punctuated<T, P> {
-    fn parse(input: ParseStream) -> Result<Self> {
-        Self::parse_terminated(input)
-    }
-}
-
-#[cfg(feature = "full")]
-impl ParseQuote for Vec<Stmt> {
-    fn parse(input: ParseStream) -> Result<Self> {
-        Block::parse_within(input)
-    }
-}
diff --git a/vendor/syn/src/pat.rs b/vendor/syn/src/pat.rs
deleted file mode 100644
index ce6399d..0000000
--- a/vendor/syn/src/pat.rs
+++ /dev/null
@@ -1,917 +0,0 @@
-use super::*;
-use crate::punctuated::Punctuated;
-use proc_macro2::TokenStream;
-
-ast_enum_of_structs! {
-    /// A pattern in a local binding, function signature, match expression, or
-    /// various other places.
-    ///
-    /// # Syntax tree enum
-    ///
-    /// This type is a [syntax tree enum].
-    ///
-    /// [syntax tree enum]: Expr#syntax-tree-enums
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    #[non_exhaustive]
-    pub enum Pat {
-        /// A const block: `const { ... }`.
-        Const(PatConst),
-
-        /// A pattern that binds a new variable: `ref mut binding @ SUBPATTERN`.
-        Ident(PatIdent),
-
-        /// A literal pattern: `0`.
-        Lit(PatLit),
-
-        /// A macro in pattern position.
-        Macro(PatMacro),
-
-        /// A pattern that matches any one of a set of cases.
-        Or(PatOr),
-
-        /// A parenthesized pattern: `(A | B)`.
-        Paren(PatParen),
-
-        /// A path pattern like `Color::Red`, optionally qualified with a
-        /// self-type.
-        ///
-        /// Unqualified path patterns can legally refer to variants, structs,
-        /// constants or associated constants. Qualified path patterns like
-        /// `<A>::B::C` and `<A as Trait>::B::C` can only legally refer to
-        /// associated constants.
-        Path(PatPath),
-
-        /// A range pattern: `1..=2`.
-        Range(PatRange),
-
-        /// A reference pattern: `&mut var`.
-        Reference(PatReference),
-
-        /// The dots in a tuple or slice pattern: `[0, 1, ..]`.
-        Rest(PatRest),
-
-        /// A dynamically sized slice pattern: `[a, b, ref i @ .., y, z]`.
-        Slice(PatSlice),
-
-        /// A struct or struct variant pattern: `Variant { x, y, .. }`.
-        Struct(PatStruct),
-
-        /// A tuple pattern: `(a, b)`.
-        Tuple(PatTuple),
-
-        /// A tuple struct or tuple variant pattern: `Variant(x, y, .., z)`.
-        TupleStruct(PatTupleStruct),
-
-        /// A type ascription pattern: `foo: f64`.
-        Type(PatType),
-
-        /// Tokens in pattern position not interpreted by Syn.
-        Verbatim(TokenStream),
-
-        /// A pattern that matches any value: `_`.
-        Wild(PatWild),
-
-        // For testing exhaustiveness in downstream code, use the following idiom:
-        //
-        //     match pat {
-        //         #![cfg_attr(test, deny(non_exhaustive_omitted_patterns))]
-        //
-        //         Pat::Box(pat) => {...}
-        //         Pat::Ident(pat) => {...}
-        //         ...
-        //         Pat::Wild(pat) => {...}
-        //
-        //         _ => { /* some sane fallback */ }
-        //     }
-        //
-        // This way we fail your tests but don't break your library when adding
-        // a variant. You will be notified by a test failure when a variant is
-        // added, so that you can add code to handle it, but your library will
-        // continue to compile and work for downstream users in the interim.
-    }
-}
-
-ast_struct! {
-    /// A pattern that binds a new variable: `ref mut binding @ SUBPATTERN`.
-    ///
-    /// It may also be a unit struct or struct variant (e.g. `None`), or a
-    /// constant; these cannot be distinguished syntactically.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct PatIdent {
-        pub attrs: Vec<Attribute>,
-        pub by_ref: Option<Token![ref]>,
-        pub mutability: Option<Token![mut]>,
-        pub ident: Ident,
-        pub subpat: Option<(Token![@], Box<Pat>)>,
-    }
-}
-
-ast_struct! {
-    /// A pattern that matches any one of a set of cases.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct PatOr {
-        pub attrs: Vec<Attribute>,
-        pub leading_vert: Option<Token![|]>,
-        pub cases: Punctuated<Pat, Token![|]>,
-    }
-}
-
-ast_struct! {
-    /// A parenthesized pattern: `(A | B)`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct PatParen {
-        pub attrs: Vec<Attribute>,
-        pub paren_token: token::Paren,
-        pub pat: Box<Pat>,
-    }
-}
-
-ast_struct! {
-    /// A reference pattern: `&mut var`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct PatReference {
-        pub attrs: Vec<Attribute>,
-        pub and_token: Token![&],
-        pub mutability: Option<Token![mut]>,
-        pub pat: Box<Pat>,
-    }
-}
-
-ast_struct! {
-    /// The dots in a tuple or slice pattern: `[0, 1, ..]`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct PatRest {
-        pub attrs: Vec<Attribute>,
-        pub dot2_token: Token![..],
-    }
-}
-
-ast_struct! {
-    /// A dynamically sized slice pattern: `[a, b, ref i @ .., y, z]`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct PatSlice {
-        pub attrs: Vec<Attribute>,
-        pub bracket_token: token::Bracket,
-        pub elems: Punctuated<Pat, Token![,]>,
-    }
-}
-
-ast_struct! {
-    /// A struct or struct variant pattern: `Variant { x, y, .. }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct PatStruct {
-        pub attrs: Vec<Attribute>,
-        pub qself: Option<QSelf>,
-        pub path: Path,
-        pub brace_token: token::Brace,
-        pub fields: Punctuated<FieldPat, Token![,]>,
-        pub rest: Option<PatRest>,
-    }
-}
-
-ast_struct! {
-    /// A tuple pattern: `(a, b)`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct PatTuple {
-        pub attrs: Vec<Attribute>,
-        pub paren_token: token::Paren,
-        pub elems: Punctuated<Pat, Token![,]>,
-    }
-}
-
-ast_struct! {
-    /// A tuple struct or tuple variant pattern: `Variant(x, y, .., z)`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct PatTupleStruct {
-        pub attrs: Vec<Attribute>,
-        pub qself: Option<QSelf>,
-        pub path: Path,
-        pub paren_token: token::Paren,
-        pub elems: Punctuated<Pat, Token![,]>,
-    }
-}
-
-ast_struct! {
-    /// A type ascription pattern: `foo: f64`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct PatType {
-        pub attrs: Vec<Attribute>,
-        pub pat: Box<Pat>,
-        pub colon_token: Token![:],
-        pub ty: Box<Type>,
-    }
-}
-
-ast_struct! {
-    /// A pattern that matches any value: `_`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct PatWild {
-        pub attrs: Vec<Attribute>,
-        pub underscore_token: Token![_],
-    }
-}
-
-ast_struct! {
-    /// A single field in a struct pattern.
-    ///
-    /// Patterns like the fields of Foo `{ x, ref y, ref mut z }` are treated
-    /// the same as `x: x, y: ref y, z: ref mut z` but there is no colon token.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct FieldPat {
-        pub attrs: Vec<Attribute>,
-        pub member: Member,
-        pub colon_token: Option<Token![:]>,
-        pub pat: Box<Pat>,
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::*;
-    use crate::ext::IdentExt as _;
-    use crate::parse::{Parse, ParseBuffer, ParseStream, Result};
-    use crate::path;
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Pat {
-        /// Parse a pattern that does _not_ involve `|` at the top level.
-        ///
-        /// This parser matches the behavior of the `$:pat_param` macro_rules
-        /// matcher, and on editions prior to Rust 2021, the behavior of
-        /// `$:pat`.
-        ///
-        /// In Rust syntax, some examples of where this syntax would occur are
-        /// in the argument pattern of functions and closures. Patterns using
-        /// `|` are not allowed to occur in these positions.
-        ///
-        /// ```compile_fail
-        /// fn f(Some(_) | None: Option<T>) {
-        ///     let _ = |Some(_) | None: Option<T>| {};
-        ///     //       ^^^^^^^^^^^^^^^^^^^^^^^^^??? :(
-        /// }
-        /// ```
-        ///
-        /// ```console
-        /// error: top-level or-patterns are not allowed in function parameters
-        ///  --> src/main.rs:1:6
-        ///   |
-        /// 1 | fn f(Some(_) | None: Option<T>) {
-        ///   |      ^^^^^^^^^^^^^^ help: wrap the pattern in parentheses: `(Some(_) | None)`
-        /// ```
-        pub fn parse_single(input: ParseStream) -> Result<Self> {
-            let begin = input.fork();
-            let lookahead = input.lookahead1();
-            if lookahead.peek(Ident)
-                && (input.peek2(Token![::])
-                    || input.peek2(Token![!])
-                    || input.peek2(token::Brace)
-                    || input.peek2(token::Paren)
-                    || input.peek2(Token![..]))
-                || input.peek(Token![self]) && input.peek2(Token![::])
-                || lookahead.peek(Token![::])
-                || lookahead.peek(Token![<])
-                || input.peek(Token![Self])
-                || input.peek(Token![super])
-                || input.peek(Token![crate])
-            {
-                pat_path_or_macro_or_struct_or_range(input)
-            } else if lookahead.peek(Token![_]) {
-                input.call(pat_wild).map(Pat::Wild)
-            } else if input.peek(Token![box]) {
-                pat_box(begin, input)
-            } else if input.peek(Token![-]) || lookahead.peek(Lit) || lookahead.peek(Token![const])
-            {
-                pat_lit_or_range(input)
-            } else if lookahead.peek(Token![ref])
-                || lookahead.peek(Token![mut])
-                || input.peek(Token![self])
-                || input.peek(Ident)
-            {
-                input.call(pat_ident).map(Pat::Ident)
-            } else if lookahead.peek(Token![&]) {
-                input.call(pat_reference).map(Pat::Reference)
-            } else if lookahead.peek(token::Paren) {
-                input.call(pat_paren_or_tuple)
-            } else if lookahead.peek(token::Bracket) {
-                input.call(pat_slice).map(Pat::Slice)
-            } else if lookahead.peek(Token![..]) && !input.peek(Token![...]) {
-                pat_range_half_open(input)
-            } else if lookahead.peek(Token![const]) {
-                input.call(pat_const).map(Pat::Verbatim)
-            } else {
-                Err(lookahead.error())
-            }
-        }
-
-        /// Parse a pattern, possibly involving `|`, but not a leading `|`.
-        pub fn parse_multi(input: ParseStream) -> Result<Self> {
-            multi_pat_impl(input, None)
-        }
-
-        /// Parse a pattern, possibly involving `|`, possibly including a
-        /// leading `|`.
-        ///
-        /// This parser matches the behavior of the Rust 2021 edition's `$:pat`
-        /// macro_rules matcher.
-        ///
-        /// In Rust syntax, an example of where this syntax would occur is in
-        /// the pattern of a `match` arm, where the language permits an optional
-        /// leading `|`, although it is not idiomatic to write one there in
-        /// handwritten code.
-        ///
-        /// ```
-        /// # let wat = None;
-        /// match wat {
-        ///     | None | Some(false) => {}
-        ///     | Some(true) => {}
-        /// }
-        /// ```
-        ///
-        /// The compiler accepts it only to facilitate some situations in
-        /// macro-generated code where a macro author might need to write:
-        ///
-        /// ```
-        /// # macro_rules! doc {
-        /// #     ($value:expr, ($($conditions1:pat),*), ($($conditions2:pat),*), $then:expr) => {
-        /// match $value {
-        ///     $(| $conditions1)* $(| $conditions2)* => $then
-        /// }
-        /// #     };
-        /// # }
-        /// #
-        /// # doc!(true, (true), (false), {});
-        /// # doc!(true, (), (true, false), {});
-        /// # doc!(true, (true, false), (), {});
-        /// ```
-        ///
-        /// Expressing the same thing correctly in the case that either one (but
-        /// not both) of `$conditions1` and `$conditions2` might be empty,
-        /// without leading `|`, is complex.
-        ///
-        /// Use [`Pat::parse_multi`] instead if you are not intending to support
-        /// macro-generated macro input.
-        pub fn parse_multi_with_leading_vert(input: ParseStream) -> Result<Self> {
-            let leading_vert: Option<Token![|]> = input.parse()?;
-            multi_pat_impl(input, leading_vert)
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for PatType {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(PatType {
-                attrs: Vec::new(),
-                pat: Box::new(Pat::parse_single(input)?),
-                colon_token: input.parse()?,
-                ty: input.parse()?,
-            })
-        }
-    }
-
-    fn multi_pat_impl(input: ParseStream, leading_vert: Option<Token![|]>) -> Result<Pat> {
-        let mut pat = Pat::parse_single(input)?;
-        if leading_vert.is_some()
-            || input.peek(Token![|]) && !input.peek(Token![||]) && !input.peek(Token![|=])
-        {
-            let mut cases = Punctuated::new();
-            cases.push_value(pat);
-            while input.peek(Token![|]) && !input.peek(Token![||]) && !input.peek(Token![|=]) {
-                let punct = input.parse()?;
-                cases.push_punct(punct);
-                let pat = Pat::parse_single(input)?;
-                cases.push_value(pat);
-            }
-            pat = Pat::Or(PatOr {
-                attrs: Vec::new(),
-                leading_vert,
-                cases,
-            });
-        }
-        Ok(pat)
-    }
-
-    fn pat_path_or_macro_or_struct_or_range(input: ParseStream) -> Result<Pat> {
-        let (qself, path) = path::parsing::qpath(input, true)?;
-
-        if qself.is_none()
-            && input.peek(Token![!])
-            && !input.peek(Token![!=])
-            && path.is_mod_style()
-        {
-            let bang_token: Token![!] = input.parse()?;
-            let (delimiter, tokens) = mac::parse_delimiter(input)?;
-            return Ok(Pat::Macro(ExprMacro {
-                attrs: Vec::new(),
-                mac: Macro {
-                    path,
-                    bang_token,
-                    delimiter,
-                    tokens,
-                },
-            }));
-        }
-
-        if input.peek(token::Brace) {
-            pat_struct(input, qself, path).map(Pat::Struct)
-        } else if input.peek(token::Paren) {
-            pat_tuple_struct(input, qself, path).map(Pat::TupleStruct)
-        } else if input.peek(Token![..]) {
-            pat_range(input, qself, path)
-        } else {
-            Ok(Pat::Path(ExprPath {
-                attrs: Vec::new(),
-                qself,
-                path,
-            }))
-        }
-    }
-
-    fn pat_wild(input: ParseStream) -> Result<PatWild> {
-        Ok(PatWild {
-            attrs: Vec::new(),
-            underscore_token: input.parse()?,
-        })
-    }
-
-    fn pat_box(begin: ParseBuffer, input: ParseStream) -> Result<Pat> {
-        input.parse::<Token![box]>()?;
-        Pat::parse_single(input)?;
-        Ok(Pat::Verbatim(verbatim::between(&begin, input)))
-    }
-
-    fn pat_ident(input: ParseStream) -> Result<PatIdent> {
-        Ok(PatIdent {
-            attrs: Vec::new(),
-            by_ref: input.parse()?,
-            mutability: input.parse()?,
-            ident: input.call(Ident::parse_any)?,
-            subpat: {
-                if input.peek(Token![@]) {
-                    let at_token: Token![@] = input.parse()?;
-                    let subpat = Pat::parse_single(input)?;
-                    Some((at_token, Box::new(subpat)))
-                } else {
-                    None
-                }
-            },
-        })
-    }
-
-    fn pat_tuple_struct(
-        input: ParseStream,
-        qself: Option<QSelf>,
-        path: Path,
-    ) -> Result<PatTupleStruct> {
-        let content;
-        let paren_token = parenthesized!(content in input);
-
-        let mut elems = Punctuated::new();
-        while !content.is_empty() {
-            let value = Pat::parse_multi_with_leading_vert(&content)?;
-            elems.push_value(value);
-            if content.is_empty() {
-                break;
-            }
-            let punct = content.parse()?;
-            elems.push_punct(punct);
-        }
-
-        Ok(PatTupleStruct {
-            attrs: Vec::new(),
-            qself,
-            path,
-            paren_token,
-            elems,
-        })
-    }
-
-    fn pat_struct(input: ParseStream, qself: Option<QSelf>, path: Path) -> Result<PatStruct> {
-        let content;
-        let brace_token = braced!(content in input);
-
-        let mut fields = Punctuated::new();
-        let mut rest = None;
-        while !content.is_empty() {
-            let attrs = content.call(Attribute::parse_outer)?;
-            if content.peek(Token![..]) {
-                rest = Some(PatRest {
-                    attrs,
-                    dot2_token: content.parse()?,
-                });
-                break;
-            }
-            let mut value = content.call(field_pat)?;
-            value.attrs = attrs;
-            fields.push_value(value);
-            if content.is_empty() {
-                break;
-            }
-            let punct: Token![,] = content.parse()?;
-            fields.push_punct(punct);
-        }
-
-        Ok(PatStruct {
-            attrs: Vec::new(),
-            qself,
-            path,
-            brace_token,
-            fields,
-            rest,
-        })
-    }
-
-    fn field_pat(input: ParseStream) -> Result<FieldPat> {
-        let begin = input.fork();
-        let boxed: Option<Token![box]> = input.parse()?;
-        let by_ref: Option<Token![ref]> = input.parse()?;
-        let mutability: Option<Token![mut]> = input.parse()?;
-
-        let member = if boxed.is_some() || by_ref.is_some() || mutability.is_some() {
-            input.parse().map(Member::Named)
-        } else {
-            input.parse()
-        }?;
-
-        if boxed.is_none() && by_ref.is_none() && mutability.is_none() && input.peek(Token![:])
-            || !member.is_named()
-        {
-            return Ok(FieldPat {
-                attrs: Vec::new(),
-                member,
-                colon_token: Some(input.parse()?),
-                pat: Box::new(Pat::parse_multi_with_leading_vert(input)?),
-            });
-        }
-
-        let ident = match member {
-            Member::Named(ident) => ident,
-            Member::Unnamed(_) => unreachable!(),
-        };
-
-        let pat = if boxed.is_some() {
-            Pat::Verbatim(verbatim::between(&begin, input))
-        } else {
-            Pat::Ident(PatIdent {
-                attrs: Vec::new(),
-                by_ref,
-                mutability,
-                ident: ident.clone(),
-                subpat: None,
-            })
-        };
-
-        Ok(FieldPat {
-            attrs: Vec::new(),
-            member: Member::Named(ident),
-            colon_token: None,
-            pat: Box::new(pat),
-        })
-    }
-
-    fn pat_range(input: ParseStream, qself: Option<QSelf>, path: Path) -> Result<Pat> {
-        let limits = RangeLimits::parse_obsolete(input)?;
-        let end = input.call(pat_range_bound)?;
-        if let (RangeLimits::Closed(_), None) = (&limits, &end) {
-            return Err(input.error("expected range upper bound"));
-        }
-        Ok(Pat::Range(ExprRange {
-            attrs: Vec::new(),
-            start: Some(Box::new(Expr::Path(ExprPath {
-                attrs: Vec::new(),
-                qself,
-                path,
-            }))),
-            limits,
-            end: end.map(PatRangeBound::into_expr),
-        }))
-    }
-
-    fn pat_range_half_open(input: ParseStream) -> Result<Pat> {
-        let limits: RangeLimits = input.parse()?;
-        let end = input.call(pat_range_bound)?;
-        if end.is_some() {
-            Ok(Pat::Range(ExprRange {
-                attrs: Vec::new(),
-                start: None,
-                limits,
-                end: end.map(PatRangeBound::into_expr),
-            }))
-        } else {
-            match limits {
-                RangeLimits::HalfOpen(dot2_token) => Ok(Pat::Rest(PatRest {
-                    attrs: Vec::new(),
-                    dot2_token,
-                })),
-                RangeLimits::Closed(_) => Err(input.error("expected range upper bound")),
-            }
-        }
-    }
-
-    fn pat_paren_or_tuple(input: ParseStream) -> Result<Pat> {
-        let content;
-        let paren_token = parenthesized!(content in input);
-
-        let mut elems = Punctuated::new();
-        while !content.is_empty() {
-            let value = Pat::parse_multi_with_leading_vert(&content)?;
-            if content.is_empty() {
-                if elems.is_empty() && !matches!(value, Pat::Rest(_)) {
-                    return Ok(Pat::Paren(PatParen {
-                        attrs: Vec::new(),
-                        paren_token,
-                        pat: Box::new(value),
-                    }));
-                }
-                elems.push_value(value);
-                break;
-            }
-            elems.push_value(value);
-            let punct = content.parse()?;
-            elems.push_punct(punct);
-        }
-
-        Ok(Pat::Tuple(PatTuple {
-            attrs: Vec::new(),
-            paren_token,
-            elems,
-        }))
-    }
-
-    fn pat_reference(input: ParseStream) -> Result<PatReference> {
-        Ok(PatReference {
-            attrs: Vec::new(),
-            and_token: input.parse()?,
-            mutability: input.parse()?,
-            pat: Box::new(Pat::parse_single(input)?),
-        })
-    }
-
-    fn pat_lit_or_range(input: ParseStream) -> Result<Pat> {
-        let start = input.call(pat_range_bound)?.unwrap();
-        if input.peek(Token![..]) {
-            let limits = RangeLimits::parse_obsolete(input)?;
-            let end = input.call(pat_range_bound)?;
-            if let (RangeLimits::Closed(_), None) = (&limits, &end) {
-                return Err(input.error("expected range upper bound"));
-            }
-            Ok(Pat::Range(ExprRange {
-                attrs: Vec::new(),
-                start: Some(start.into_expr()),
-                limits,
-                end: end.map(PatRangeBound::into_expr),
-            }))
-        } else {
-            Ok(start.into_pat())
-        }
-    }
-
-    // Patterns that can appear on either side of a range pattern.
-    enum PatRangeBound {
-        Const(ExprConst),
-        Lit(ExprLit),
-        Path(ExprPath),
-    }
-
-    impl PatRangeBound {
-        fn into_expr(self) -> Box<Expr> {
-            Box::new(match self {
-                PatRangeBound::Const(pat) => Expr::Const(pat),
-                PatRangeBound::Lit(pat) => Expr::Lit(pat),
-                PatRangeBound::Path(pat) => Expr::Path(pat),
-            })
-        }
-
-        fn into_pat(self) -> Pat {
-            match self {
-                PatRangeBound::Const(pat) => Pat::Const(pat),
-                PatRangeBound::Lit(pat) => Pat::Lit(pat),
-                PatRangeBound::Path(pat) => Pat::Path(pat),
-            }
-        }
-    }
-
-    fn pat_range_bound(input: ParseStream) -> Result<Option<PatRangeBound>> {
-        if input.is_empty()
-            || input.peek(Token![|])
-            || input.peek(Token![=])
-            || input.peek(Token![:]) && !input.peek(Token![::])
-            || input.peek(Token![,])
-            || input.peek(Token![;])
-            || input.peek(Token![if])
-        {
-            return Ok(None);
-        }
-
-        let lookahead = input.lookahead1();
-        let expr = if lookahead.peek(Lit) {
-            PatRangeBound::Lit(input.parse()?)
-        } else if lookahead.peek(Ident)
-            || lookahead.peek(Token![::])
-            || lookahead.peek(Token![<])
-            || lookahead.peek(Token![self])
-            || lookahead.peek(Token![Self])
-            || lookahead.peek(Token![super])
-            || lookahead.peek(Token![crate])
-        {
-            PatRangeBound::Path(input.parse()?)
-        } else if lookahead.peek(Token![const]) {
-            PatRangeBound::Const(input.parse()?)
-        } else {
-            return Err(lookahead.error());
-        };
-
-        Ok(Some(expr))
-    }
-
-    fn pat_slice(input: ParseStream) -> Result<PatSlice> {
-        let content;
-        let bracket_token = bracketed!(content in input);
-
-        let mut elems = Punctuated::new();
-        while !content.is_empty() {
-            let value = Pat::parse_multi_with_leading_vert(&content)?;
-            match value {
-                Pat::Range(pat) if pat.start.is_none() || pat.end.is_none() => {
-                    let (start, end) = match pat.limits {
-                        RangeLimits::HalfOpen(dot_dot) => (dot_dot.spans[0], dot_dot.spans[1]),
-                        RangeLimits::Closed(dot_dot_eq) => {
-                            (dot_dot_eq.spans[0], dot_dot_eq.spans[2])
-                        }
-                    };
-                    let msg = "range pattern is not allowed unparenthesized inside slice pattern";
-                    return Err(error::new2(start, end, msg));
-                }
-                _ => {}
-            }
-            elems.push_value(value);
-            if content.is_empty() {
-                break;
-            }
-            let punct = content.parse()?;
-            elems.push_punct(punct);
-        }
-
-        Ok(PatSlice {
-            attrs: Vec::new(),
-            bracket_token,
-            elems,
-        })
-    }
-
-    fn pat_const(input: ParseStream) -> Result<TokenStream> {
-        let begin = input.fork();
-        input.parse::<Token![const]>()?;
-
-        let content;
-        braced!(content in input);
-        content.call(Attribute::parse_inner)?;
-        content.call(Block::parse_within)?;
-
-        Ok(verbatim::between(&begin, input))
-    }
-}
-
-#[cfg(feature = "printing")]
-mod printing {
-    use super::*;
-    use crate::attr::FilterAttrs;
-    use proc_macro2::TokenStream;
-    use quote::{ToTokens, TokenStreamExt};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for PatIdent {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.by_ref.to_tokens(tokens);
-            self.mutability.to_tokens(tokens);
-            self.ident.to_tokens(tokens);
-            if let Some((at_token, subpat)) = &self.subpat {
-                at_token.to_tokens(tokens);
-                subpat.to_tokens(tokens);
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for PatOr {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.leading_vert.to_tokens(tokens);
-            self.cases.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for PatParen {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.paren_token.surround(tokens, |tokens| {
-                self.pat.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for PatReference {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.and_token.to_tokens(tokens);
-            self.mutability.to_tokens(tokens);
-            self.pat.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for PatRest {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.dot2_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for PatSlice {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.bracket_token.surround(tokens, |tokens| {
-                self.elems.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for PatStruct {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            path::printing::print_path(tokens, &self.qself, &self.path);
-            self.brace_token.surround(tokens, |tokens| {
-                self.fields.to_tokens(tokens);
-                // NOTE: We need a comma before the dot2 token if it is present.
-                if !self.fields.empty_or_trailing() && self.rest.is_some() {
-                    <Token![,]>::default().to_tokens(tokens);
-                }
-                self.rest.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for PatTuple {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.paren_token.surround(tokens, |tokens| {
-                self.elems.to_tokens(tokens);
-                // If there is only one element, a trailing comma is needed to
-                // distinguish PatTuple from PatParen, unless this is `(..)`
-                // which is a tuple pattern even without comma.
-                if self.elems.len() == 1
-                    && !self.elems.trailing_punct()
-                    && !matches!(self.elems[0], Pat::Rest { .. })
-                {
-                    <Token![,]>::default().to_tokens(tokens);
-                }
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for PatTupleStruct {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            path::printing::print_path(tokens, &self.qself, &self.path);
-            self.paren_token.surround(tokens, |tokens| {
-                self.elems.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for PatType {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.pat.to_tokens(tokens);
-            self.colon_token.to_tokens(tokens);
-            self.ty.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for PatWild {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            self.underscore_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for FieldPat {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            if let Some(colon_token) = &self.colon_token {
-                self.member.to_tokens(tokens);
-                colon_token.to_tokens(tokens);
-            }
-            self.pat.to_tokens(tokens);
-        }
-    }
-}
diff --git a/vendor/syn/src/path.rs b/vendor/syn/src/path.rs
deleted file mode 100644
index 975154a..0000000
--- a/vendor/syn/src/path.rs
+++ /dev/null
@@ -1,877 +0,0 @@
-use super::*;
-use crate::punctuated::Punctuated;
-
-ast_struct! {
-    /// A path at which a named item is exported (e.g. `std::collections::HashMap`).
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct Path {
-        pub leading_colon: Option<Token![::]>,
-        pub segments: Punctuated<PathSegment, Token![::]>,
-    }
-}
-
-impl<T> From<T> for Path
-where
-    T: Into<PathSegment>,
-{
-    fn from(segment: T) -> Self {
-        let mut path = Path {
-            leading_colon: None,
-            segments: Punctuated::new(),
-        };
-        path.segments.push_value(segment.into());
-        path
-    }
-}
-
-impl Path {
-    /// Determines whether this is a path of length 1 equal to the given
-    /// ident.
-    ///
-    /// For them to compare equal, it must be the case that:
-    ///
-    /// - the path has no leading colon,
-    /// - the number of path segments is 1,
-    /// - the first path segment has no angle bracketed or parenthesized
-    ///   path arguments, and
-    /// - the ident of the first path segment is equal to the given one.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use proc_macro2::TokenStream;
-    /// use syn::{Attribute, Error, Meta, Result};
-    ///
-    /// fn get_serde_meta_item(attr: &Attribute) -> Result<Option<&TokenStream>> {
-    ///     if attr.path().is_ident("serde") {
-    ///         match &attr.meta {
-    ///             Meta::List(meta) => Ok(Some(&meta.tokens)),
-    ///             bad => Err(Error::new_spanned(bad, "unrecognized attribute")),
-    ///         }
-    ///     } else {
-    ///         Ok(None)
-    ///     }
-    /// }
-    /// ```
-    pub fn is_ident<I>(&self, ident: &I) -> bool
-    where
-        I: ?Sized,
-        Ident: PartialEq<I>,
-    {
-        match self.get_ident() {
-            Some(id) => id == ident,
-            None => false,
-        }
-    }
-
-    /// If this path consists of a single ident, returns the ident.
-    ///
-    /// A path is considered an ident if:
-    ///
-    /// - the path has no leading colon,
-    /// - the number of path segments is 1, and
-    /// - the first path segment has no angle bracketed or parenthesized
-    ///   path arguments.
-    pub fn get_ident(&self) -> Option<&Ident> {
-        if self.leading_colon.is_none()
-            && self.segments.len() == 1
-            && self.segments[0].arguments.is_none()
-        {
-            Some(&self.segments[0].ident)
-        } else {
-            None
-        }
-    }
-
-    /// An error if this path is not a single ident, as defined in `get_ident`.
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn require_ident(&self) -> Result<&Ident> {
-        self.get_ident().ok_or_else(|| {
-            crate::error::new2(
-                self.segments.first().unwrap().ident.span(),
-                self.segments.last().unwrap().ident.span(),
-                "expected this path to be an identifier",
-            )
-        })
-    }
-}
-
-ast_struct! {
-    /// A segment of a path together with any path arguments on that segment.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct PathSegment {
-        pub ident: Ident,
-        pub arguments: PathArguments,
-    }
-}
-
-impl<T> From<T> for PathSegment
-where
-    T: Into<Ident>,
-{
-    fn from(ident: T) -> Self {
-        PathSegment {
-            ident: ident.into(),
-            arguments: PathArguments::None,
-        }
-    }
-}
-
-ast_enum! {
-    /// Angle bracketed or parenthesized arguments of a path segment.
-    ///
-    /// ## Angle bracketed
-    ///
-    /// The `<'a, T>` in `std::slice::iter<'a, T>`.
-    ///
-    /// ## Parenthesized
-    ///
-    /// The `(A, B) -> C` in `Fn(A, B) -> C`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub enum PathArguments {
-        None,
-        /// The `<'a, T>` in `std::slice::iter<'a, T>`.
-        AngleBracketed(AngleBracketedGenericArguments),
-        /// The `(A, B) -> C` in `Fn(A, B) -> C`.
-        Parenthesized(ParenthesizedGenericArguments),
-    }
-}
-
-impl Default for PathArguments {
-    fn default() -> Self {
-        PathArguments::None
-    }
-}
-
-impl PathArguments {
-    pub fn is_empty(&self) -> bool {
-        match self {
-            PathArguments::None => true,
-            PathArguments::AngleBracketed(bracketed) => bracketed.args.is_empty(),
-            PathArguments::Parenthesized(_) => false,
-        }
-    }
-
-    pub fn is_none(&self) -> bool {
-        match self {
-            PathArguments::None => true,
-            PathArguments::AngleBracketed(_) | PathArguments::Parenthesized(_) => false,
-        }
-    }
-}
-
-ast_enum! {
-    /// An individual generic argument, like `'a`, `T`, or `Item = T`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    #[non_exhaustive]
-    pub enum GenericArgument {
-        /// A lifetime argument.
-        Lifetime(Lifetime),
-        /// A type argument.
-        Type(Type),
-        /// A const expression. Must be inside of a block.
-        ///
-        /// NOTE: Identity expressions are represented as Type arguments, as
-        /// they are indistinguishable syntactically.
-        Const(Expr),
-        /// A binding (equality constraint) on an associated type: the `Item =
-        /// u8` in `Iterator<Item = u8>`.
-        AssocType(AssocType),
-        /// An equality constraint on an associated constant: the `PANIC =
-        /// false` in `Trait<PANIC = false>`.
-        AssocConst(AssocConst),
-        /// An associated type bound: `Iterator<Item: Display>`.
-        Constraint(Constraint),
-    }
-}
-
-ast_struct! {
-    /// Angle bracketed arguments of a path segment: the `<K, V>` in `HashMap<K,
-    /// V>`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct AngleBracketedGenericArguments {
-        pub colon2_token: Option<Token![::]>,
-        pub lt_token: Token![<],
-        pub args: Punctuated<GenericArgument, Token![,]>,
-        pub gt_token: Token![>],
-    }
-}
-
-ast_struct! {
-    /// A binding (equality constraint) on an associated type: the `Item = u8`
-    /// in `Iterator<Item = u8>`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct AssocType {
-        pub ident: Ident,
-        pub generics: Option<AngleBracketedGenericArguments>,
-        pub eq_token: Token![=],
-        pub ty: Type,
-    }
-}
-
-ast_struct! {
-    /// An equality constraint on an associated constant: the `PANIC = false` in
-    /// `Trait<PANIC = false>`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct AssocConst {
-        pub ident: Ident,
-        pub generics: Option<AngleBracketedGenericArguments>,
-        pub eq_token: Token![=],
-        pub value: Expr,
-    }
-}
-
-ast_struct! {
-    /// An associated type bound: `Iterator<Item: Display>`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct Constraint {
-        pub ident: Ident,
-        pub generics: Option<AngleBracketedGenericArguments>,
-        pub colon_token: Token![:],
-        pub bounds: Punctuated<TypeParamBound, Token![+]>,
-    }
-}
-
-ast_struct! {
-    /// Arguments of a function path segment: the `(A, B) -> C` in `Fn(A,B) ->
-    /// C`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct ParenthesizedGenericArguments {
-        pub paren_token: token::Paren,
-        /// `(A, B)`
-        pub inputs: Punctuated<Type, Token![,]>,
-        /// `C`
-        pub output: ReturnType,
-    }
-}
-
-ast_struct! {
-    /// The explicit Self type in a qualified path: the `T` in `<T as
-    /// Display>::fmt`.
-    ///
-    /// The actual path, including the trait and the associated item, is stored
-    /// separately. The `position` field represents the index of the associated
-    /// item qualified with this Self type.
-    ///
-    /// ```text
-    /// <Vec<T> as a::b::Trait>::AssociatedItem
-    ///  ^~~~~~    ~~~~~~~~~~~~~~^
-    ///  ty        position = 3
-    ///
-    /// <Vec<T>>::AssociatedItem
-    ///  ^~~~~~   ^
-    ///  ty       position = 0
-    /// ```
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct QSelf {
-        pub lt_token: Token![<],
-        pub ty: Box<Type>,
-        pub position: usize,
-        pub as_token: Option<Token![as]>,
-        pub gt_token: Token![>],
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::*;
-
-    use crate::ext::IdentExt as _;
-    use crate::parse::{Parse, ParseStream, Result};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Path {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Self::parse_helper(input, false)
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for GenericArgument {
-        fn parse(input: ParseStream) -> Result<Self> {
-            if input.peek(Lifetime) && !input.peek2(Token![+]) {
-                return Ok(GenericArgument::Lifetime(input.parse()?));
-            }
-
-            if input.peek(Lit) || input.peek(token::Brace) {
-                return const_argument(input).map(GenericArgument::Const);
-            }
-
-            let mut argument: Type = input.parse()?;
-
-            match argument {
-                Type::Path(mut ty)
-                    if ty.qself.is_none()
-                        && ty.path.leading_colon.is_none()
-                        && ty.path.segments.len() == 1
-                        && match &ty.path.segments[0].arguments {
-                            PathArguments::None | PathArguments::AngleBracketed(_) => true,
-                            PathArguments::Parenthesized(_) => false,
-                        } =>
-                {
-                    if let Some(eq_token) = input.parse::<Option<Token![=]>>()? {
-                        let segment = ty.path.segments.pop().unwrap().into_value();
-                        let ident = segment.ident;
-                        let generics = match segment.arguments {
-                            PathArguments::None => None,
-                            PathArguments::AngleBracketed(arguments) => Some(arguments),
-                            PathArguments::Parenthesized(_) => unreachable!(),
-                        };
-                        return if input.peek(Lit) || input.peek(token::Brace) {
-                            Ok(GenericArgument::AssocConst(AssocConst {
-                                ident,
-                                generics,
-                                eq_token,
-                                value: const_argument(input)?,
-                            }))
-                        } else {
-                            Ok(GenericArgument::AssocType(AssocType {
-                                ident,
-                                generics,
-                                eq_token,
-                                ty: input.parse()?,
-                            }))
-                        };
-                    }
-
-                    #[cfg(feature = "full")]
-                    if let Some(colon_token) = input.parse::<Option<Token![:]>>()? {
-                        let segment = ty.path.segments.pop().unwrap().into_value();
-                        return Ok(GenericArgument::Constraint(Constraint {
-                            ident: segment.ident,
-                            generics: match segment.arguments {
-                                PathArguments::None => None,
-                                PathArguments::AngleBracketed(arguments) => Some(arguments),
-                                PathArguments::Parenthesized(_) => unreachable!(),
-                            },
-                            colon_token,
-                            bounds: {
-                                let mut bounds = Punctuated::new();
-                                loop {
-                                    if input.peek(Token![,]) || input.peek(Token![>]) {
-                                        break;
-                                    }
-                                    let value: TypeParamBound = input.parse()?;
-                                    bounds.push_value(value);
-                                    if !input.peek(Token![+]) {
-                                        break;
-                                    }
-                                    let punct: Token![+] = input.parse()?;
-                                    bounds.push_punct(punct);
-                                }
-                                bounds
-                            },
-                        }));
-                    }
-
-                    argument = Type::Path(ty);
-                }
-                _ => {}
-            }
-
-            Ok(GenericArgument::Type(argument))
-        }
-    }
-
-    pub(crate) fn const_argument(input: ParseStream) -> Result<Expr> {
-        let lookahead = input.lookahead1();
-
-        if input.peek(Lit) {
-            let lit = input.parse()?;
-            return Ok(Expr::Lit(lit));
-        }
-
-        if input.peek(Ident) {
-            let ident: Ident = input.parse()?;
-            return Ok(Expr::Path(ExprPath {
-                attrs: Vec::new(),
-                qself: None,
-                path: Path::from(ident),
-            }));
-        }
-
-        if input.peek(token::Brace) {
-            #[cfg(feature = "full")]
-            {
-                let block: ExprBlock = input.parse()?;
-                return Ok(Expr::Block(block));
-            }
-
-            #[cfg(not(feature = "full"))]
-            {
-                let begin = input.fork();
-                let content;
-                braced!(content in input);
-                content.parse::<Expr>()?;
-                let verbatim = verbatim::between(&begin, input);
-                return Ok(Expr::Verbatim(verbatim));
-            }
-        }
-
-        Err(lookahead.error())
-    }
-
-    impl AngleBracketedGenericArguments {
-        /// Parse `::<…>` with mandatory leading `::`.
-        ///
-        /// The ordinary [`Parse`] impl for `AngleBracketedGenericArguments`
-        /// parses optional leading `::`.
-        #[cfg(feature = "full")]
-        #[cfg_attr(doc_cfg, doc(cfg(all(feature = "parsing", feature = "full"))))]
-        pub fn parse_turbofish(input: ParseStream) -> Result<Self> {
-            let colon2_token: Token![::] = input.parse()?;
-            Self::do_parse(Some(colon2_token), input)
-        }
-
-        pub(crate) fn do_parse(
-            colon2_token: Option<Token![::]>,
-            input: ParseStream,
-        ) -> Result<Self> {
-            Ok(AngleBracketedGenericArguments {
-                colon2_token,
-                lt_token: input.parse()?,
-                args: {
-                    let mut args = Punctuated::new();
-                    loop {
-                        if input.peek(Token![>]) {
-                            break;
-                        }
-                        let value: GenericArgument = input.parse()?;
-                        args.push_value(value);
-                        if input.peek(Token![>]) {
-                            break;
-                        }
-                        let punct: Token![,] = input.parse()?;
-                        args.push_punct(punct);
-                    }
-                    args
-                },
-                gt_token: input.parse()?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for AngleBracketedGenericArguments {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let colon2_token: Option<Token![::]> = input.parse()?;
-            Self::do_parse(colon2_token, input)
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ParenthesizedGenericArguments {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let content;
-            Ok(ParenthesizedGenericArguments {
-                paren_token: parenthesized!(content in input),
-                inputs: content.parse_terminated(Type::parse, Token![,])?,
-                output: input.call(ReturnType::without_plus)?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for PathSegment {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Self::parse_helper(input, false)
-        }
-    }
-
-    impl PathSegment {
-        fn parse_helper(input: ParseStream, expr_style: bool) -> Result<Self> {
-            if input.peek(Token![super])
-                || input.peek(Token![self])
-                || input.peek(Token![crate])
-                || cfg!(feature = "full") && input.peek(Token![try])
-            {
-                let ident = input.call(Ident::parse_any)?;
-                return Ok(PathSegment::from(ident));
-            }
-
-            let ident = if input.peek(Token![Self]) {
-                input.call(Ident::parse_any)?
-            } else {
-                input.parse()?
-            };
-
-            if !expr_style && input.peek(Token![<]) && !input.peek(Token![<=])
-                || input.peek(Token![::]) && input.peek3(Token![<])
-            {
-                Ok(PathSegment {
-                    ident,
-                    arguments: PathArguments::AngleBracketed(input.parse()?),
-                })
-            } else {
-                Ok(PathSegment::from(ident))
-            }
-        }
-    }
-
-    impl Path {
-        /// Parse a `Path` containing no path arguments on any of its segments.
-        ///
-        /// # Example
-        ///
-        /// ```
-        /// use syn::{Path, Result, Token};
-        /// use syn::parse::{Parse, ParseStream};
-        ///
-        /// // A simplified single `use` statement like:
-        /// //
-        /// //     use std::collections::HashMap;
-        /// //
-        /// // Note that generic parameters are not allowed in a `use` statement
-        /// // so the following must not be accepted.
-        /// //
-        /// //     use a::<b>::c;
-        /// struct SingleUse {
-        ///     use_token: Token![use],
-        ///     path: Path,
-        /// }
-        ///
-        /// impl Parse for SingleUse {
-        ///     fn parse(input: ParseStream) -> Result<Self> {
-        ///         Ok(SingleUse {
-        ///             use_token: input.parse()?,
-        ///             path: input.call(Path::parse_mod_style)?,
-        ///         })
-        ///     }
-        /// }
-        /// ```
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-        pub fn parse_mod_style(input: ParseStream) -> Result<Self> {
-            Ok(Path {
-                leading_colon: input.parse()?,
-                segments: {
-                    let mut segments = Punctuated::new();
-                    loop {
-                        if !input.peek(Ident)
-                            && !input.peek(Token![super])
-                            && !input.peek(Token![self])
-                            && !input.peek(Token![Self])
-                            && !input.peek(Token![crate])
-                        {
-                            break;
-                        }
-                        let ident = Ident::parse_any(input)?;
-                        segments.push_value(PathSegment::from(ident));
-                        if !input.peek(Token![::]) {
-                            break;
-                        }
-                        let punct = input.parse()?;
-                        segments.push_punct(punct);
-                    }
-                    if segments.is_empty() {
-                        return Err(input.parse::<Ident>().unwrap_err());
-                    } else if segments.trailing_punct() {
-                        return Err(input.error("expected path segment after `::`"));
-                    }
-                    segments
-                },
-            })
-        }
-
-        pub(crate) fn parse_helper(input: ParseStream, expr_style: bool) -> Result<Self> {
-            let mut path = Path {
-                leading_colon: input.parse()?,
-                segments: {
-                    let mut segments = Punctuated::new();
-                    let value = PathSegment::parse_helper(input, expr_style)?;
-                    segments.push_value(value);
-                    segments
-                },
-            };
-            Path::parse_rest(input, &mut path, expr_style)?;
-            Ok(path)
-        }
-
-        pub(crate) fn parse_rest(
-            input: ParseStream,
-            path: &mut Self,
-            expr_style: bool,
-        ) -> Result<()> {
-            while input.peek(Token![::]) && !input.peek3(token::Paren) {
-                let punct: Token![::] = input.parse()?;
-                path.segments.push_punct(punct);
-                let value = PathSegment::parse_helper(input, expr_style)?;
-                path.segments.push_value(value);
-            }
-            Ok(())
-        }
-
-        pub(crate) fn is_mod_style(&self) -> bool {
-            self.segments
-                .iter()
-                .all(|segment| segment.arguments.is_none())
-        }
-    }
-
-    pub(crate) fn qpath(input: ParseStream, expr_style: bool) -> Result<(Option<QSelf>, Path)> {
-        if input.peek(Token![<]) {
-            let lt_token: Token![<] = input.parse()?;
-            let this: Type = input.parse()?;
-            let path = if input.peek(Token![as]) {
-                let as_token: Token![as] = input.parse()?;
-                let path: Path = input.parse()?;
-                Some((as_token, path))
-            } else {
-                None
-            };
-            let gt_token: Token![>] = input.parse()?;
-            let colon2_token: Token![::] = input.parse()?;
-            let mut rest = Punctuated::new();
-            loop {
-                let path = PathSegment::parse_helper(input, expr_style)?;
-                rest.push_value(path);
-                if !input.peek(Token![::]) {
-                    break;
-                }
-                let punct: Token![::] = input.parse()?;
-                rest.push_punct(punct);
-            }
-            let (position, as_token, path) = match path {
-                Some((as_token, mut path)) => {
-                    let pos = path.segments.len();
-                    path.segments.push_punct(colon2_token);
-                    path.segments.extend(rest.into_pairs());
-                    (pos, Some(as_token), path)
-                }
-                None => {
-                    let path = Path {
-                        leading_colon: Some(colon2_token),
-                        segments: rest,
-                    };
-                    (0, None, path)
-                }
-            };
-            let qself = QSelf {
-                lt_token,
-                ty: Box::new(this),
-                position,
-                as_token,
-                gt_token,
-            };
-            Ok((Some(qself), path))
-        } else {
-            let path = Path::parse_helper(input, expr_style)?;
-            Ok((None, path))
-        }
-    }
-}
-
-#[cfg(feature = "printing")]
-pub(crate) mod printing {
-    use super::*;
-    use crate::print::TokensOrDefault;
-    #[cfg(feature = "parsing")]
-    use crate::spanned::Spanned;
-    #[cfg(feature = "parsing")]
-    use proc_macro2::Span;
-    use proc_macro2::TokenStream;
-    use quote::ToTokens;
-    use std::cmp;
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Path {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.leading_colon.to_tokens(tokens);
-            self.segments.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for PathSegment {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.ident.to_tokens(tokens);
-            self.arguments.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for PathArguments {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            match self {
-                PathArguments::None => {}
-                PathArguments::AngleBracketed(arguments) => {
-                    arguments.to_tokens(tokens);
-                }
-                PathArguments::Parenthesized(arguments) => {
-                    arguments.to_tokens(tokens);
-                }
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for GenericArgument {
-        #[allow(clippy::match_same_arms)]
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            match self {
-                GenericArgument::Lifetime(lt) => lt.to_tokens(tokens),
-                GenericArgument::Type(ty) => ty.to_tokens(tokens),
-                GenericArgument::Const(expr) => match expr {
-                    Expr::Lit(expr) => expr.to_tokens(tokens),
-
-                    Expr::Path(expr)
-                        if expr.attrs.is_empty()
-                            && expr.qself.is_none()
-                            && expr.path.get_ident().is_some() =>
-                    {
-                        expr.to_tokens(tokens);
-                    }
-
-                    #[cfg(feature = "full")]
-                    Expr::Block(expr) => expr.to_tokens(tokens),
-
-                    #[cfg(not(feature = "full"))]
-                    Expr::Verbatim(expr) => expr.to_tokens(tokens),
-
-                    // ERROR CORRECTION: Add braces to make sure that the
-                    // generated code is valid.
-                    _ => token::Brace::default().surround(tokens, |tokens| {
-                        expr.to_tokens(tokens);
-                    }),
-                },
-                GenericArgument::AssocType(assoc) => assoc.to_tokens(tokens),
-                GenericArgument::AssocConst(assoc) => assoc.to_tokens(tokens),
-                GenericArgument::Constraint(constraint) => constraint.to_tokens(tokens),
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for AngleBracketedGenericArguments {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.colon2_token.to_tokens(tokens);
-            self.lt_token.to_tokens(tokens);
-
-            // Print lifetimes before types/consts/bindings, regardless of their
-            // order in self.args.
-            let mut trailing_or_empty = true;
-            for param in self.args.pairs() {
-                match param.value() {
-                    GenericArgument::Lifetime(_) => {
-                        param.to_tokens(tokens);
-                        trailing_or_empty = param.punct().is_some();
-                    }
-                    GenericArgument::Type(_)
-                    | GenericArgument::Const(_)
-                    | GenericArgument::AssocType(_)
-                    | GenericArgument::AssocConst(_)
-                    | GenericArgument::Constraint(_) => {}
-                }
-            }
-            for param in self.args.pairs() {
-                match param.value() {
-                    GenericArgument::Type(_)
-                    | GenericArgument::Const(_)
-                    | GenericArgument::AssocType(_)
-                    | GenericArgument::AssocConst(_)
-                    | GenericArgument::Constraint(_) => {
-                        if !trailing_or_empty {
-                            <Token![,]>::default().to_tokens(tokens);
-                        }
-                        param.to_tokens(tokens);
-                        trailing_or_empty = param.punct().is_some();
-                    }
-                    GenericArgument::Lifetime(_) => {}
-                }
-            }
-
-            self.gt_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for AssocType {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.ident.to_tokens(tokens);
-            self.generics.to_tokens(tokens);
-            self.eq_token.to_tokens(tokens);
-            self.ty.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for AssocConst {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.ident.to_tokens(tokens);
-            self.generics.to_tokens(tokens);
-            self.eq_token.to_tokens(tokens);
-            self.value.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Constraint {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.ident.to_tokens(tokens);
-            self.generics.to_tokens(tokens);
-            self.colon_token.to_tokens(tokens);
-            self.bounds.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ParenthesizedGenericArguments {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.paren_token.surround(tokens, |tokens| {
-                self.inputs.to_tokens(tokens);
-            });
-            self.output.to_tokens(tokens);
-        }
-    }
-
-    pub(crate) fn print_path(tokens: &mut TokenStream, qself: &Option<QSelf>, path: &Path) {
-        let qself = match qself {
-            Some(qself) => qself,
-            None => {
-                path.to_tokens(tokens);
-                return;
-            }
-        };
-        qself.lt_token.to_tokens(tokens);
-        qself.ty.to_tokens(tokens);
-
-        let pos = cmp::min(qself.position, path.segments.len());
-        let mut segments = path.segments.pairs();
-        if pos > 0 {
-            TokensOrDefault(&qself.as_token).to_tokens(tokens);
-            path.leading_colon.to_tokens(tokens);
-            for (i, segment) in segments.by_ref().take(pos).enumerate() {
-                if i + 1 == pos {
-                    segment.value().to_tokens(tokens);
-                    qself.gt_token.to_tokens(tokens);
-                    segment.punct().to_tokens(tokens);
-                } else {
-                    segment.to_tokens(tokens);
-                }
-            }
-        } else {
-            qself.gt_token.to_tokens(tokens);
-            path.leading_colon.to_tokens(tokens);
-        }
-        for segment in segments {
-            segment.to_tokens(tokens);
-        }
-    }
-
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(all(feature = "parsing", feature = "printing"))))]
-    impl Spanned for QSelf {
-        fn span(&self) -> Span {
-            struct QSelfDelimiters<'a>(&'a QSelf);
-
-            impl<'a> ToTokens for QSelfDelimiters<'a> {
-                fn to_tokens(&self, tokens: &mut TokenStream) {
-                    self.0.lt_token.to_tokens(tokens);
-                    self.0.gt_token.to_tokens(tokens);
-                }
-            }
-
-            QSelfDelimiters(self).span()
-        }
-    }
-}
diff --git a/vendor/syn/src/print.rs b/vendor/syn/src/print.rs
deleted file mode 100644
index 0740993..0000000
--- a/vendor/syn/src/print.rs
+++ /dev/null
@@ -1,16 +0,0 @@
-use proc_macro2::TokenStream;
-use quote::ToTokens;
-
-pub(crate) struct TokensOrDefault<'a, T: 'a>(pub &'a Option<T>);
-
-impl<'a, T> ToTokens for TokensOrDefault<'a, T>
-where
-    T: ToTokens + Default,
-{
-    fn to_tokens(&self, tokens: &mut TokenStream) {
-        match self.0 {
-            Some(t) => t.to_tokens(tokens),
-            None => T::default().to_tokens(tokens),
-        }
-    }
-}
diff --git a/vendor/syn/src/punctuated.rs b/vendor/syn/src/punctuated.rs
deleted file mode 100644
index 3ea8a1d..0000000
--- a/vendor/syn/src/punctuated.rs
+++ /dev/null
@@ -1,1108 +0,0 @@
-//! A punctuated sequence of syntax tree nodes separated by punctuation.
-//!
-//! Lots of things in Rust are punctuated sequences.
-//!
-//! - The fields of a struct are `Punctuated<Field, Token![,]>`.
-//! - The segments of a path are `Punctuated<PathSegment, Token![::]>`.
-//! - The bounds on a generic parameter are `Punctuated<TypeParamBound,
-//!   Token![+]>`.
-//! - The arguments to a function call are `Punctuated<Expr, Token![,]>`.
-//!
-//! This module provides a common representation for these punctuated sequences
-//! in the form of the [`Punctuated<T, P>`] type. We store a vector of pairs of
-//! syntax tree node + punctuation, where every node in the sequence is followed
-//! by punctuation except for possibly the final one.
-//!
-//! [`Punctuated<T, P>`]: Punctuated
-//!
-//! ```text
-//! a_function_call(arg1, arg2, arg3);
-//!                 ~~~~^ ~~~~^ ~~~~
-//! ```
-
-#[cfg(feature = "extra-traits")]
-use std::fmt::{self, Debug};
-#[cfg(feature = "extra-traits")]
-use std::hash::{Hash, Hasher};
-#[cfg(any(feature = "full", feature = "derive"))]
-use std::iter;
-use std::ops::{Index, IndexMut};
-use std::option;
-use std::slice;
-use std::vec;
-
-use crate::drops::{NoDrop, TrivialDrop};
-#[cfg(feature = "parsing")]
-use crate::parse::{Parse, ParseStream, Result};
-#[cfg(feature = "parsing")]
-use crate::token::Token;
-
-/// **A punctuated sequence of syntax tree nodes of type `T` separated by
-/// punctuation of type `P`.**
-///
-/// Refer to the [module documentation] for details about punctuated sequences.
-///
-/// [module documentation]: self
-pub struct Punctuated<T, P> {
-    inner: Vec<(T, P)>,
-    last: Option<Box<T>>,
-}
-
-impl<T, P> Punctuated<T, P> {
-    /// Creates an empty punctuated sequence.
-    pub const fn new() -> Self {
-        Punctuated {
-            inner: Vec::new(),
-            last: None,
-        }
-    }
-
-    /// Determines whether this punctuated sequence is empty, meaning it
-    /// contains no syntax tree nodes or punctuation.
-    pub fn is_empty(&self) -> bool {
-        self.inner.len() == 0 && self.last.is_none()
-    }
-
-    /// Returns the number of syntax tree nodes in this punctuated sequence.
-    ///
-    /// This is the number of nodes of type `T`, not counting the punctuation of
-    /// type `P`.
-    pub fn len(&self) -> usize {
-        self.inner.len() + if self.last.is_some() { 1 } else { 0 }
-    }
-
-    /// Borrows the first element in this sequence.
-    pub fn first(&self) -> Option<&T> {
-        self.iter().next()
-    }
-
-    /// Mutably borrows the first element in this sequence.
-    pub fn first_mut(&mut self) -> Option<&mut T> {
-        self.iter_mut().next()
-    }
-
-    /// Borrows the last element in this sequence.
-    pub fn last(&self) -> Option<&T> {
-        self.iter().next_back()
-    }
-
-    /// Mutably borrows the last element in this sequence.
-    pub fn last_mut(&mut self) -> Option<&mut T> {
-        self.iter_mut().next_back()
-    }
-
-    /// Returns an iterator over borrowed syntax tree nodes of type `&T`.
-    pub fn iter(&self) -> Iter<T> {
-        Iter {
-            inner: Box::new(NoDrop::new(PrivateIter {
-                inner: self.inner.iter(),
-                last: self.last.as_ref().map(Box::as_ref).into_iter(),
-            })),
-        }
-    }
-
-    /// Returns an iterator over mutably borrowed syntax tree nodes of type
-    /// `&mut T`.
-    pub fn iter_mut(&mut self) -> IterMut<T> {
-        IterMut {
-            inner: Box::new(NoDrop::new(PrivateIterMut {
-                inner: self.inner.iter_mut(),
-                last: self.last.as_mut().map(Box::as_mut).into_iter(),
-            })),
-        }
-    }
-
-    /// Returns an iterator over the contents of this sequence as borrowed
-    /// punctuated pairs.
-    pub fn pairs(&self) -> Pairs<T, P> {
-        Pairs {
-            inner: self.inner.iter(),
-            last: self.last.as_ref().map(Box::as_ref).into_iter(),
-        }
-    }
-
-    /// Returns an iterator over the contents of this sequence as mutably
-    /// borrowed punctuated pairs.
-    pub fn pairs_mut(&mut self) -> PairsMut<T, P> {
-        PairsMut {
-            inner: self.inner.iter_mut(),
-            last: self.last.as_mut().map(Box::as_mut).into_iter(),
-        }
-    }
-
-    /// Returns an iterator over the contents of this sequence as owned
-    /// punctuated pairs.
-    pub fn into_pairs(self) -> IntoPairs<T, P> {
-        IntoPairs {
-            inner: self.inner.into_iter(),
-            last: self.last.map(|t| *t).into_iter(),
-        }
-    }
-
-    /// Appends a syntax tree node onto the end of this punctuated sequence. The
-    /// sequence must already have a trailing punctuation, or be empty.
-    ///
-    /// Use [`push`] instead if the punctuated sequence may or may not already
-    /// have trailing punctuation.
-    ///
-    /// [`push`]: Punctuated::push
-    ///
-    /// # Panics
-    ///
-    /// Panics if the sequence is nonempty and does not already have a trailing
-    /// punctuation.
-    pub fn push_value(&mut self, value: T) {
-        assert!(
-            self.empty_or_trailing(),
-            "Punctuated::push_value: cannot push value if Punctuated is missing trailing punctuation",
-        );
-
-        self.last = Some(Box::new(value));
-    }
-
-    /// Appends a trailing punctuation onto the end of this punctuated sequence.
-    /// The sequence must be non-empty and must not already have trailing
-    /// punctuation.
-    ///
-    /// # Panics
-    ///
-    /// Panics if the sequence is empty or already has a trailing punctuation.
-    pub fn push_punct(&mut self, punctuation: P) {
-        assert!(
-            self.last.is_some(),
-            "Punctuated::push_punct: cannot push punctuation if Punctuated is empty or already has trailing punctuation",
-        );
-
-        let last = self.last.take().unwrap();
-        self.inner.push((*last, punctuation));
-    }
-
-    /// Removes the last punctuated pair from this sequence, or `None` if the
-    /// sequence is empty.
-    pub fn pop(&mut self) -> Option<Pair<T, P>> {
-        if self.last.is_some() {
-            self.last.take().map(|t| Pair::End(*t))
-        } else {
-            self.inner.pop().map(|(t, p)| Pair::Punctuated(t, p))
-        }
-    }
-
-    /// Removes the trailing punctuation from this punctuated sequence, or
-    /// `None` if there isn't any.
-    pub fn pop_punct(&mut self) -> Option<P> {
-        if self.last.is_some() {
-            None
-        } else {
-            let (t, p) = self.inner.pop()?;
-            self.last = Some(Box::new(t));
-            Some(p)
-        }
-    }
-
-    /// Determines whether this punctuated sequence ends with a trailing
-    /// punctuation.
-    pub fn trailing_punct(&self) -> bool {
-        self.last.is_none() && !self.is_empty()
-    }
-
-    /// Returns true if either this `Punctuated` is empty, or it has a trailing
-    /// punctuation.
-    ///
-    /// Equivalent to `punctuated.is_empty() || punctuated.trailing_punct()`.
-    pub fn empty_or_trailing(&self) -> bool {
-        self.last.is_none()
-    }
-
-    /// Appends a syntax tree node onto the end of this punctuated sequence.
-    ///
-    /// If there is not a trailing punctuation in this sequence when this method
-    /// is called, the default value of punctuation type `P` is inserted before
-    /// the given value of type `T`.
-    pub fn push(&mut self, value: T)
-    where
-        P: Default,
-    {
-        if !self.empty_or_trailing() {
-            self.push_punct(Default::default());
-        }
-        self.push_value(value);
-    }
-
-    /// Inserts an element at position `index`.
-    ///
-    /// # Panics
-    ///
-    /// Panics if `index` is greater than the number of elements previously in
-    /// this punctuated sequence.
-    pub fn insert(&mut self, index: usize, value: T)
-    where
-        P: Default,
-    {
-        assert!(
-            index <= self.len(),
-            "Punctuated::insert: index out of range",
-        );
-
-        if index == self.len() {
-            self.push(value);
-        } else {
-            self.inner.insert(index, (value, Default::default()));
-        }
-    }
-
-    /// Clears the sequence of all values and punctuation, making it empty.
-    pub fn clear(&mut self) {
-        self.inner.clear();
-        self.last = None;
-    }
-
-    /// Parses zero or more occurrences of `T` separated by punctuation of type
-    /// `P`, with optional trailing punctuation.
-    ///
-    /// Parsing continues until the end of this parse stream. The entire content
-    /// of this parse stream must consist of `T` and `P`.
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse_terminated(input: ParseStream) -> Result<Self>
-    where
-        T: Parse,
-        P: Parse,
-    {
-        Self::parse_terminated_with(input, T::parse)
-    }
-
-    /// Parses zero or more occurrences of `T` using the given parse function,
-    /// separated by punctuation of type `P`, with optional trailing
-    /// punctuation.
-    ///
-    /// Like [`parse_terminated`], the entire content of this stream is expected
-    /// to be parsed.
-    ///
-    /// [`parse_terminated`]: Punctuated::parse_terminated
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse_terminated_with(
-        input: ParseStream,
-        parser: fn(ParseStream) -> Result<T>,
-    ) -> Result<Self>
-    where
-        P: Parse,
-    {
-        let mut punctuated = Punctuated::new();
-
-        loop {
-            if input.is_empty() {
-                break;
-            }
-            let value = parser(input)?;
-            punctuated.push_value(value);
-            if input.is_empty() {
-                break;
-            }
-            let punct = input.parse()?;
-            punctuated.push_punct(punct);
-        }
-
-        Ok(punctuated)
-    }
-
-    /// Parses one or more occurrences of `T` separated by punctuation of type
-    /// `P`, not accepting trailing punctuation.
-    ///
-    /// Parsing continues as long as punctuation `P` is present at the head of
-    /// the stream. This method returns upon parsing a `T` and observing that it
-    /// is not followed by a `P`, even if there are remaining tokens in the
-    /// stream.
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse_separated_nonempty(input: ParseStream) -> Result<Self>
-    where
-        T: Parse,
-        P: Token + Parse,
-    {
-        Self::parse_separated_nonempty_with(input, T::parse)
-    }
-
-    /// Parses one or more occurrences of `T` using the given parse function,
-    /// separated by punctuation of type `P`, not accepting trailing
-    /// punctuation.
-    ///
-    /// Like [`parse_separated_nonempty`], may complete early without parsing
-    /// the entire content of this stream.
-    ///
-    /// [`parse_separated_nonempty`]: Punctuated::parse_separated_nonempty
-    #[cfg(feature = "parsing")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    pub fn parse_separated_nonempty_with(
-        input: ParseStream,
-        parser: fn(ParseStream) -> Result<T>,
-    ) -> Result<Self>
-    where
-        P: Token + Parse,
-    {
-        let mut punctuated = Punctuated::new();
-
-        loop {
-            let value = parser(input)?;
-            punctuated.push_value(value);
-            if !P::peek(input.cursor()) {
-                break;
-            }
-            let punct = input.parse()?;
-            punctuated.push_punct(punct);
-        }
-
-        Ok(punctuated)
-    }
-}
-
-#[cfg(feature = "clone-impls")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl<T, P> Clone for Punctuated<T, P>
-where
-    T: Clone,
-    P: Clone,
-{
-    fn clone(&self) -> Self {
-        Punctuated {
-            inner: self.inner.clone(),
-            last: self.last.clone(),
-        }
-    }
-
-    fn clone_from(&mut self, other: &Self) {
-        self.inner.clone_from(&other.inner);
-        self.last.clone_from(&other.last);
-    }
-}
-
-#[cfg(feature = "extra-traits")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl<T, P> Eq for Punctuated<T, P>
-where
-    T: Eq,
-    P: Eq,
-{
-}
-
-#[cfg(feature = "extra-traits")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl<T, P> PartialEq for Punctuated<T, P>
-where
-    T: PartialEq,
-    P: PartialEq,
-{
-    fn eq(&self, other: &Self) -> bool {
-        let Punctuated { inner, last } = self;
-        *inner == other.inner && *last == other.last
-    }
-}
-
-#[cfg(feature = "extra-traits")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl<T, P> Hash for Punctuated<T, P>
-where
-    T: Hash,
-    P: Hash,
-{
-    fn hash<H: Hasher>(&self, state: &mut H) {
-        let Punctuated { inner, last } = self;
-        inner.hash(state);
-        last.hash(state);
-    }
-}
-
-#[cfg(feature = "extra-traits")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl<T: Debug, P: Debug> Debug for Punctuated<T, P> {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        let mut list = f.debug_list();
-        for (t, p) in &self.inner {
-            list.entry(t);
-            list.entry(p);
-        }
-        if let Some(last) = &self.last {
-            list.entry(last);
-        }
-        list.finish()
-    }
-}
-
-impl<T, P> FromIterator<T> for Punctuated<T, P>
-where
-    P: Default,
-{
-    fn from_iter<I: IntoIterator<Item = T>>(i: I) -> Self {
-        let mut ret = Punctuated::new();
-        ret.extend(i);
-        ret
-    }
-}
-
-impl<T, P> Extend<T> for Punctuated<T, P>
-where
-    P: Default,
-{
-    fn extend<I: IntoIterator<Item = T>>(&mut self, i: I) {
-        for value in i {
-            self.push(value);
-        }
-    }
-}
-
-impl<T, P> FromIterator<Pair<T, P>> for Punctuated<T, P> {
-    fn from_iter<I: IntoIterator<Item = Pair<T, P>>>(i: I) -> Self {
-        let mut ret = Punctuated::new();
-        do_extend(&mut ret, i.into_iter());
-        ret
-    }
-}
-
-impl<T, P> Extend<Pair<T, P>> for Punctuated<T, P>
-where
-    P: Default,
-{
-    fn extend<I: IntoIterator<Item = Pair<T, P>>>(&mut self, i: I) {
-        if !self.empty_or_trailing() {
-            self.push_punct(P::default());
-        }
-        do_extend(self, i.into_iter());
-    }
-}
-
-fn do_extend<T, P, I>(punctuated: &mut Punctuated<T, P>, i: I)
-where
-    I: Iterator<Item = Pair<T, P>>,
-{
-    let mut nomore = false;
-    for pair in i {
-        if nomore {
-            panic!("Punctuated extended with items after a Pair::End");
-        }
-        match pair {
-            Pair::Punctuated(a, b) => punctuated.inner.push((a, b)),
-            Pair::End(a) => {
-                punctuated.last = Some(Box::new(a));
-                nomore = true;
-            }
-        }
-    }
-}
-
-impl<T, P> IntoIterator for Punctuated<T, P> {
-    type Item = T;
-    type IntoIter = IntoIter<T>;
-
-    fn into_iter(self) -> Self::IntoIter {
-        let mut elements = Vec::with_capacity(self.len());
-        elements.extend(self.inner.into_iter().map(|pair| pair.0));
-        elements.extend(self.last.map(|t| *t));
-
-        IntoIter {
-            inner: elements.into_iter(),
-        }
-    }
-}
-
-impl<'a, T, P> IntoIterator for &'a Punctuated<T, P> {
-    type Item = &'a T;
-    type IntoIter = Iter<'a, T>;
-
-    fn into_iter(self) -> Self::IntoIter {
-        Punctuated::iter(self)
-    }
-}
-
-impl<'a, T, P> IntoIterator for &'a mut Punctuated<T, P> {
-    type Item = &'a mut T;
-    type IntoIter = IterMut<'a, T>;
-
-    fn into_iter(self) -> Self::IntoIter {
-        Punctuated::iter_mut(self)
-    }
-}
-
-impl<T, P> Default for Punctuated<T, P> {
-    fn default() -> Self {
-        Punctuated::new()
-    }
-}
-
-/// An iterator over borrowed pairs of type `Pair<&T, &P>`.
-///
-/// Refer to the [module documentation] for details about punctuated sequences.
-///
-/// [module documentation]: self
-pub struct Pairs<'a, T: 'a, P: 'a> {
-    inner: slice::Iter<'a, (T, P)>,
-    last: option::IntoIter<&'a T>,
-}
-
-impl<'a, T, P> Iterator for Pairs<'a, T, P> {
-    type Item = Pair<&'a T, &'a P>;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        self.inner
-            .next()
-            .map(|(t, p)| Pair::Punctuated(t, p))
-            .or_else(|| self.last.next().map(Pair::End))
-    }
-
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        (self.len(), Some(self.len()))
-    }
-}
-
-impl<'a, T, P> DoubleEndedIterator for Pairs<'a, T, P> {
-    fn next_back(&mut self) -> Option<Self::Item> {
-        self.last
-            .next()
-            .map(Pair::End)
-            .or_else(|| self.inner.next_back().map(|(t, p)| Pair::Punctuated(t, p)))
-    }
-}
-
-impl<'a, T, P> ExactSizeIterator for Pairs<'a, T, P> {
-    fn len(&self) -> usize {
-        self.inner.len() + self.last.len()
-    }
-}
-
-// No Clone bound on T or P.
-impl<'a, T, P> Clone for Pairs<'a, T, P> {
-    fn clone(&self) -> Self {
-        Pairs {
-            inner: self.inner.clone(),
-            last: self.last.clone(),
-        }
-    }
-}
-
-/// An iterator over mutably borrowed pairs of type `Pair<&mut T, &mut P>`.
-///
-/// Refer to the [module documentation] for details about punctuated sequences.
-///
-/// [module documentation]: self
-pub struct PairsMut<'a, T: 'a, P: 'a> {
-    inner: slice::IterMut<'a, (T, P)>,
-    last: option::IntoIter<&'a mut T>,
-}
-
-impl<'a, T, P> Iterator for PairsMut<'a, T, P> {
-    type Item = Pair<&'a mut T, &'a mut P>;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        self.inner
-            .next()
-            .map(|(t, p)| Pair::Punctuated(t, p))
-            .or_else(|| self.last.next().map(Pair::End))
-    }
-
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        (self.len(), Some(self.len()))
-    }
-}
-
-impl<'a, T, P> DoubleEndedIterator for PairsMut<'a, T, P> {
-    fn next_back(&mut self) -> Option<Self::Item> {
-        self.last
-            .next()
-            .map(Pair::End)
-            .or_else(|| self.inner.next_back().map(|(t, p)| Pair::Punctuated(t, p)))
-    }
-}
-
-impl<'a, T, P> ExactSizeIterator for PairsMut<'a, T, P> {
-    fn len(&self) -> usize {
-        self.inner.len() + self.last.len()
-    }
-}
-
-/// An iterator over owned pairs of type `Pair<T, P>`.
-///
-/// Refer to the [module documentation] for details about punctuated sequences.
-///
-/// [module documentation]: self
-pub struct IntoPairs<T, P> {
-    inner: vec::IntoIter<(T, P)>,
-    last: option::IntoIter<T>,
-}
-
-impl<T, P> Iterator for IntoPairs<T, P> {
-    type Item = Pair<T, P>;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        self.inner
-            .next()
-            .map(|(t, p)| Pair::Punctuated(t, p))
-            .or_else(|| self.last.next().map(Pair::End))
-    }
-
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        (self.len(), Some(self.len()))
-    }
-}
-
-impl<T, P> DoubleEndedIterator for IntoPairs<T, P> {
-    fn next_back(&mut self) -> Option<Self::Item> {
-        self.last
-            .next()
-            .map(Pair::End)
-            .or_else(|| self.inner.next_back().map(|(t, p)| Pair::Punctuated(t, p)))
-    }
-}
-
-impl<T, P> ExactSizeIterator for IntoPairs<T, P> {
-    fn len(&self) -> usize {
-        self.inner.len() + self.last.len()
-    }
-}
-
-impl<T, P> Clone for IntoPairs<T, P>
-where
-    T: Clone,
-    P: Clone,
-{
-    fn clone(&self) -> Self {
-        IntoPairs {
-            inner: self.inner.clone(),
-            last: self.last.clone(),
-        }
-    }
-}
-
-/// An iterator over owned values of type `T`.
-///
-/// Refer to the [module documentation] for details about punctuated sequences.
-///
-/// [module documentation]: self
-pub struct IntoIter<T> {
-    inner: vec::IntoIter<T>,
-}
-
-impl<T> Iterator for IntoIter<T> {
-    type Item = T;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        self.inner.next()
-    }
-
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        (self.len(), Some(self.len()))
-    }
-}
-
-impl<T> DoubleEndedIterator for IntoIter<T> {
-    fn next_back(&mut self) -> Option<Self::Item> {
-        self.inner.next_back()
-    }
-}
-
-impl<T> ExactSizeIterator for IntoIter<T> {
-    fn len(&self) -> usize {
-        self.inner.len()
-    }
-}
-
-impl<T> Clone for IntoIter<T>
-where
-    T: Clone,
-{
-    fn clone(&self) -> Self {
-        IntoIter {
-            inner: self.inner.clone(),
-        }
-    }
-}
-
-/// An iterator over borrowed values of type `&T`.
-///
-/// Refer to the [module documentation] for details about punctuated sequences.
-///
-/// [module documentation]: self
-pub struct Iter<'a, T: 'a> {
-    inner: Box<NoDrop<dyn IterTrait<'a, T> + 'a>>,
-}
-
-trait IterTrait<'a, T: 'a>: Iterator<Item = &'a T> + DoubleEndedIterator + ExactSizeIterator {
-    fn clone_box(&self) -> Box<NoDrop<dyn IterTrait<'a, T> + 'a>>;
-}
-
-struct PrivateIter<'a, T: 'a, P: 'a> {
-    inner: slice::Iter<'a, (T, P)>,
-    last: option::IntoIter<&'a T>,
-}
-
-impl<'a, T, P> TrivialDrop for PrivateIter<'a, T, P>
-where
-    slice::Iter<'a, (T, P)>: TrivialDrop,
-    option::IntoIter<&'a T>: TrivialDrop,
-{
-}
-
-#[cfg(any(feature = "full", feature = "derive"))]
-pub(crate) fn empty_punctuated_iter<'a, T>() -> Iter<'a, T> {
-    Iter {
-        inner: Box::new(NoDrop::new(iter::empty())),
-    }
-}
-
-// No Clone bound on T.
-impl<'a, T> Clone for Iter<'a, T> {
-    fn clone(&self) -> Self {
-        Iter {
-            inner: self.inner.clone_box(),
-        }
-    }
-}
-
-impl<'a, T> Iterator for Iter<'a, T> {
-    type Item = &'a T;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        self.inner.next()
-    }
-
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        (self.len(), Some(self.len()))
-    }
-}
-
-impl<'a, T> DoubleEndedIterator for Iter<'a, T> {
-    fn next_back(&mut self) -> Option<Self::Item> {
-        self.inner.next_back()
-    }
-}
-
-impl<'a, T> ExactSizeIterator for Iter<'a, T> {
-    fn len(&self) -> usize {
-        self.inner.len()
-    }
-}
-
-impl<'a, T, P> Iterator for PrivateIter<'a, T, P> {
-    type Item = &'a T;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        self.inner
-            .next()
-            .map(|pair| &pair.0)
-            .or_else(|| self.last.next())
-    }
-}
-
-impl<'a, T, P> DoubleEndedIterator for PrivateIter<'a, T, P> {
-    fn next_back(&mut self) -> Option<Self::Item> {
-        self.last
-            .next()
-            .or_else(|| self.inner.next_back().map(|pair| &pair.0))
-    }
-}
-
-impl<'a, T, P> ExactSizeIterator for PrivateIter<'a, T, P> {
-    fn len(&self) -> usize {
-        self.inner.len() + self.last.len()
-    }
-}
-
-// No Clone bound on T or P.
-impl<'a, T, P> Clone for PrivateIter<'a, T, P> {
-    fn clone(&self) -> Self {
-        PrivateIter {
-            inner: self.inner.clone(),
-            last: self.last.clone(),
-        }
-    }
-}
-
-impl<'a, T, I> IterTrait<'a, T> for I
-where
-    T: 'a,
-    I: DoubleEndedIterator<Item = &'a T>
-        + ExactSizeIterator<Item = &'a T>
-        + Clone
-        + TrivialDrop
-        + 'a,
-{
-    fn clone_box(&self) -> Box<NoDrop<dyn IterTrait<'a, T> + 'a>> {
-        Box::new(NoDrop::new(self.clone()))
-    }
-}
-
-/// An iterator over mutably borrowed values of type `&mut T`.
-///
-/// Refer to the [module documentation] for details about punctuated sequences.
-///
-/// [module documentation]: self
-pub struct IterMut<'a, T: 'a> {
-    inner: Box<NoDrop<dyn IterMutTrait<'a, T, Item = &'a mut T> + 'a>>,
-}
-
-trait IterMutTrait<'a, T: 'a>:
-    DoubleEndedIterator<Item = &'a mut T> + ExactSizeIterator<Item = &'a mut T>
-{
-}
-
-struct PrivateIterMut<'a, T: 'a, P: 'a> {
-    inner: slice::IterMut<'a, (T, P)>,
-    last: option::IntoIter<&'a mut T>,
-}
-
-impl<'a, T, P> TrivialDrop for PrivateIterMut<'a, T, P>
-where
-    slice::IterMut<'a, (T, P)>: TrivialDrop,
-    option::IntoIter<&'a mut T>: TrivialDrop,
-{
-}
-
-#[cfg(any(feature = "full", feature = "derive"))]
-pub(crate) fn empty_punctuated_iter_mut<'a, T>() -> IterMut<'a, T> {
-    IterMut {
-        inner: Box::new(NoDrop::new(iter::empty())),
-    }
-}
-
-impl<'a, T> Iterator for IterMut<'a, T> {
-    type Item = &'a mut T;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        self.inner.next()
-    }
-
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        (self.len(), Some(self.len()))
-    }
-}
-
-impl<'a, T> DoubleEndedIterator for IterMut<'a, T> {
-    fn next_back(&mut self) -> Option<Self::Item> {
-        self.inner.next_back()
-    }
-}
-
-impl<'a, T> ExactSizeIterator for IterMut<'a, T> {
-    fn len(&self) -> usize {
-        self.inner.len()
-    }
-}
-
-impl<'a, T, P> Iterator for PrivateIterMut<'a, T, P> {
-    type Item = &'a mut T;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        self.inner
-            .next()
-            .map(|pair| &mut pair.0)
-            .or_else(|| self.last.next())
-    }
-}
-
-impl<'a, T, P> DoubleEndedIterator for PrivateIterMut<'a, T, P> {
-    fn next_back(&mut self) -> Option<Self::Item> {
-        self.last
-            .next()
-            .or_else(|| self.inner.next_back().map(|pair| &mut pair.0))
-    }
-}
-
-impl<'a, T, P> ExactSizeIterator for PrivateIterMut<'a, T, P> {
-    fn len(&self) -> usize {
-        self.inner.len() + self.last.len()
-    }
-}
-
-impl<'a, T, I> IterMutTrait<'a, T> for I
-where
-    T: 'a,
-    I: DoubleEndedIterator<Item = &'a mut T> + ExactSizeIterator<Item = &'a mut T> + 'a,
-{
-}
-
-/// A single syntax tree node of type `T` followed by its trailing punctuation
-/// of type `P` if any.
-///
-/// Refer to the [module documentation] for details about punctuated sequences.
-///
-/// [module documentation]: self
-pub enum Pair<T, P> {
-    Punctuated(T, P),
-    End(T),
-}
-
-impl<T, P> Pair<T, P> {
-    /// Extracts the syntax tree node from this punctuated pair, discarding the
-    /// following punctuation.
-    pub fn into_value(self) -> T {
-        match self {
-            Pair::Punctuated(t, _) | Pair::End(t) => t,
-        }
-    }
-
-    /// Borrows the syntax tree node from this punctuated pair.
-    pub fn value(&self) -> &T {
-        match self {
-            Pair::Punctuated(t, _) | Pair::End(t) => t,
-        }
-    }
-
-    /// Mutably borrows the syntax tree node from this punctuated pair.
-    pub fn value_mut(&mut self) -> &mut T {
-        match self {
-            Pair::Punctuated(t, _) | Pair::End(t) => t,
-        }
-    }
-
-    /// Borrows the punctuation from this punctuated pair, unless this pair is
-    /// the final one and there is no trailing punctuation.
-    pub fn punct(&self) -> Option<&P> {
-        match self {
-            Pair::Punctuated(_, p) => Some(p),
-            Pair::End(_) => None,
-        }
-    }
-
-    /// Mutably borrows the punctuation from this punctuated pair, unless the
-    /// pair is the final one and there is no trailing punctuation.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// # use proc_macro2::Span;
-    /// # use syn::punctuated::Punctuated;
-    /// # use syn::{parse_quote, Token, TypeParamBound};
-    /// #
-    /// # let mut punctuated = Punctuated::<TypeParamBound, Token![+]>::new();
-    /// # let span = Span::call_site();
-    /// #
-    /// punctuated.insert(0, parse_quote!('lifetime));
-    /// if let Some(punct) = punctuated.pairs_mut().next().unwrap().punct_mut() {
-    ///     punct.span = span;
-    /// }
-    /// ```
-    pub fn punct_mut(&mut self) -> Option<&mut P> {
-        match self {
-            Pair::Punctuated(_, p) => Some(p),
-            Pair::End(_) => None,
-        }
-    }
-
-    /// Creates a punctuated pair out of a syntax tree node and an optional
-    /// following punctuation.
-    pub fn new(t: T, p: Option<P>) -> Self {
-        match p {
-            Some(p) => Pair::Punctuated(t, p),
-            None => Pair::End(t),
-        }
-    }
-
-    /// Produces this punctuated pair as a tuple of syntax tree node and
-    /// optional following punctuation.
-    pub fn into_tuple(self) -> (T, Option<P>) {
-        match self {
-            Pair::Punctuated(t, p) => (t, Some(p)),
-            Pair::End(t) => (t, None),
-        }
-    }
-}
-
-#[cfg(feature = "clone-impls")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl<T, P> Pair<&T, &P> {
-    pub fn cloned(self) -> Pair<T, P>
-    where
-        T: Clone,
-        P: Clone,
-    {
-        match self {
-            Pair::Punctuated(t, p) => Pair::Punctuated(t.clone(), p.clone()),
-            Pair::End(t) => Pair::End(t.clone()),
-        }
-    }
-}
-
-#[cfg(feature = "clone-impls")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl<T, P> Clone for Pair<T, P>
-where
-    T: Clone,
-    P: Clone,
-{
-    fn clone(&self) -> Self {
-        match self {
-            Pair::Punctuated(t, p) => Pair::Punctuated(t.clone(), p.clone()),
-            Pair::End(t) => Pair::End(t.clone()),
-        }
-    }
-}
-
-#[cfg(feature = "clone-impls")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl<T, P> Copy for Pair<T, P>
-where
-    T: Copy,
-    P: Copy,
-{
-}
-
-impl<T, P> Index<usize> for Punctuated<T, P> {
-    type Output = T;
-
-    fn index(&self, index: usize) -> &Self::Output {
-        if index == self.len() - 1 {
-            match &self.last {
-                Some(t) => t,
-                None => &self.inner[index].0,
-            }
-        } else {
-            &self.inner[index].0
-        }
-    }
-}
-
-impl<T, P> IndexMut<usize> for Punctuated<T, P> {
-    fn index_mut(&mut self, index: usize) -> &mut Self::Output {
-        if index == self.len() - 1 {
-            match &mut self.last {
-                Some(t) => t,
-                None => &mut self.inner[index].0,
-            }
-        } else {
-            &mut self.inner[index].0
-        }
-    }
-}
-
-#[cfg(feature = "printing")]
-mod printing {
-    use super::*;
-    use proc_macro2::TokenStream;
-    use quote::{ToTokens, TokenStreamExt};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl<T, P> ToTokens for Punctuated<T, P>
-    where
-        T: ToTokens,
-        P: ToTokens,
-    {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.pairs());
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl<T, P> ToTokens for Pair<T, P>
-    where
-        T: ToTokens,
-        P: ToTokens,
-    {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            match self {
-                Pair::Punctuated(a, b) => {
-                    a.to_tokens(tokens);
-                    b.to_tokens(tokens);
-                }
-                Pair::End(a) => a.to_tokens(tokens),
-            }
-        }
-    }
-}
diff --git a/vendor/syn/src/restriction.rs b/vendor/syn/src/restriction.rs
deleted file mode 100644
index e66b17f..0000000
--- a/vendor/syn/src/restriction.rs
+++ /dev/null
@@ -1,171 +0,0 @@
-use super::*;
-
-ast_enum! {
-    /// The visibility level of an item: inherited or `pub` or
-    /// `pub(restricted)`.
-    ///
-    /// # Syntax tree enum
-    ///
-    /// This type is a [syntax tree enum].
-    ///
-    /// [syntax tree enum]: Expr#syntax-tree-enums
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub enum Visibility {
-        /// A public visibility level: `pub`.
-        Public(Token![pub]),
-
-        /// A visibility level restricted to some path: `pub(self)` or
-        /// `pub(super)` or `pub(crate)` or `pub(in some::module)`.
-        Restricted(VisRestricted),
-
-        /// An inherited visibility, which usually means private.
-        Inherited,
-    }
-}
-
-ast_struct! {
-    /// A visibility level restricted to some path: `pub(self)` or
-    /// `pub(super)` or `pub(crate)` or `pub(in some::module)`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct VisRestricted {
-        pub pub_token: Token![pub],
-        pub paren_token: token::Paren,
-        pub in_token: Option<Token![in]>,
-        pub path: Box<Path>,
-    }
-}
-
-ast_enum! {
-    /// Unused, but reserved for RFC 3323 restrictions.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    #[non_exhaustive]
-    pub enum FieldMutability {
-        None,
-
-        // TODO: https://rust-lang.github.io/rfcs/3323-restrictions.html
-        //
-        // FieldMutability::Restricted(MutRestricted)
-        //
-        // pub struct MutRestricted {
-        //     pub mut_token: Token![mut],
-        //     pub paren_token: token::Paren,
-        //     pub in_token: Option<Token![in]>,
-        //     pub path: Box<Path>,
-        // }
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::*;
-    use crate::ext::IdentExt as _;
-    use crate::parse::discouraged::Speculative as _;
-    use crate::parse::{Parse, ParseStream, Result};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Visibility {
-        fn parse(input: ParseStream) -> Result<Self> {
-            // Recognize an empty None-delimited group, as produced by a $:vis
-            // matcher that matched no tokens.
-            if input.peek(token::Group) {
-                let ahead = input.fork();
-                let group = crate::group::parse_group(&ahead)?;
-                if group.content.is_empty() {
-                    input.advance_to(&ahead);
-                    return Ok(Visibility::Inherited);
-                }
-            }
-
-            if input.peek(Token![pub]) {
-                Self::parse_pub(input)
-            } else {
-                Ok(Visibility::Inherited)
-            }
-        }
-    }
-
-    impl Visibility {
-        fn parse_pub(input: ParseStream) -> Result<Self> {
-            let pub_token = input.parse::<Token![pub]>()?;
-
-            if input.peek(token::Paren) {
-                let ahead = input.fork();
-
-                let content;
-                let paren_token = parenthesized!(content in ahead);
-                if content.peek(Token![crate])
-                    || content.peek(Token![self])
-                    || content.peek(Token![super])
-                {
-                    let path = content.call(Ident::parse_any)?;
-
-                    // Ensure there are no additional tokens within `content`.
-                    // Without explicitly checking, we may misinterpret a tuple
-                    // field as a restricted visibility, causing a parse error.
-                    // e.g. `pub (crate::A, crate::B)` (Issue #720).
-                    if content.is_empty() {
-                        input.advance_to(&ahead);
-                        return Ok(Visibility::Restricted(VisRestricted {
-                            pub_token,
-                            paren_token,
-                            in_token: None,
-                            path: Box::new(Path::from(path)),
-                        }));
-                    }
-                } else if content.peek(Token![in]) {
-                    let in_token: Token![in] = content.parse()?;
-                    let path = content.call(Path::parse_mod_style)?;
-
-                    input.advance_to(&ahead);
-                    return Ok(Visibility::Restricted(VisRestricted {
-                        pub_token,
-                        paren_token,
-                        in_token: Some(in_token),
-                        path: Box::new(path),
-                    }));
-                }
-            }
-
-            Ok(Visibility::Public(pub_token))
-        }
-
-        #[cfg(feature = "full")]
-        pub(crate) fn is_some(&self) -> bool {
-            match self {
-                Visibility::Inherited => false,
-                _ => true,
-            }
-        }
-    }
-}
-
-#[cfg(feature = "printing")]
-mod printing {
-    use super::*;
-    use proc_macro2::TokenStream;
-    use quote::ToTokens;
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Visibility {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            match self {
-                Visibility::Public(pub_token) => pub_token.to_tokens(tokens),
-                Visibility::Restricted(vis_restricted) => vis_restricted.to_tokens(tokens),
-                Visibility::Inherited => {}
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for VisRestricted {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.pub_token.to_tokens(tokens);
-            self.paren_token.surround(tokens, |tokens| {
-                // TODO: If we have a path which is not "self" or "super" or
-                // "crate", automatically add the "in" token.
-                self.in_token.to_tokens(tokens);
-                self.path.to_tokens(tokens);
-            });
-        }
-    }
-}
diff --git a/vendor/syn/src/sealed.rs b/vendor/syn/src/sealed.rs
deleted file mode 100644
index dc80474..0000000
--- a/vendor/syn/src/sealed.rs
+++ /dev/null
@@ -1,4 +0,0 @@
-#[cfg(feature = "parsing")]
-pub(crate) mod lookahead {
-    pub trait Sealed: Copy {}
-}
diff --git a/vendor/syn/src/span.rs b/vendor/syn/src/span.rs
deleted file mode 100644
index eb27794..0000000
--- a/vendor/syn/src/span.rs
+++ /dev/null
@@ -1,63 +0,0 @@
-use proc_macro2::extra::DelimSpan;
-use proc_macro2::{Delimiter, Group, Span, TokenStream};
-
-#[doc(hidden)]
-pub trait IntoSpans<S> {
-    fn into_spans(self) -> S;
-}
-
-impl IntoSpans<Span> for Span {
-    fn into_spans(self) -> Span {
-        self
-    }
-}
-
-impl IntoSpans<[Span; 1]> for Span {
-    fn into_spans(self) -> [Span; 1] {
-        [self]
-    }
-}
-
-impl IntoSpans<[Span; 2]> for Span {
-    fn into_spans(self) -> [Span; 2] {
-        [self, self]
-    }
-}
-
-impl IntoSpans<[Span; 3]> for Span {
-    fn into_spans(self) -> [Span; 3] {
-        [self, self, self]
-    }
-}
-
-impl IntoSpans<[Span; 1]> for [Span; 1] {
-    fn into_spans(self) -> [Span; 1] {
-        self
-    }
-}
-
-impl IntoSpans<[Span; 2]> for [Span; 2] {
-    fn into_spans(self) -> [Span; 2] {
-        self
-    }
-}
-
-impl IntoSpans<[Span; 3]> for [Span; 3] {
-    fn into_spans(self) -> [Span; 3] {
-        self
-    }
-}
-
-impl IntoSpans<DelimSpan> for Span {
-    fn into_spans(self) -> DelimSpan {
-        let mut group = Group::new(Delimiter::None, TokenStream::new());
-        group.set_span(self);
-        group.delim_span()
-    }
-}
-
-impl IntoSpans<DelimSpan> for DelimSpan {
-    fn into_spans(self) -> DelimSpan {
-        self
-    }
-}
diff --git a/vendor/syn/src/spanned.rs b/vendor/syn/src/spanned.rs
deleted file mode 100644
index 98aa0aa..0000000
--- a/vendor/syn/src/spanned.rs
+++ /dev/null
@@ -1,118 +0,0 @@
-//! A trait that can provide the `Span` of the complete contents of a syntax
-//! tree node.
-//!
-//! <br>
-//!
-//! # Example
-//!
-//! Suppose in a procedural macro we have a [`Type`] that we want to assert
-//! implements the [`Sync`] trait. Maybe this is the type of one of the fields
-//! of a struct for which we are deriving a trait implementation, and we need to
-//! be able to pass a reference to one of those fields across threads.
-//!
-//! [`Type`]: crate::Type
-//! [`Sync`]: std::marker::Sync
-//!
-//! If the field type does *not* implement `Sync` as required, we want the
-//! compiler to report an error pointing out exactly which type it was.
-//!
-//! The following macro code takes a variable `ty` of type `Type` and produces a
-//! static assertion that `Sync` is implemented for that type.
-//!
-//! ```
-//! # extern crate proc_macro;
-//! #
-//! use proc_macro::TokenStream;
-//! use proc_macro2::Span;
-//! use quote::quote_spanned;
-//! use syn::Type;
-//! use syn::spanned::Spanned;
-//!
-//! # const IGNORE_TOKENS: &str = stringify! {
-//! #[proc_macro_derive(MyMacro)]
-//! # };
-//! pub fn my_macro(input: TokenStream) -> TokenStream {
-//!     # let ty = get_a_type();
-//!     /* ... */
-//!
-//!     let assert_sync = quote_spanned! {ty.span()=>
-//!         struct _AssertSync where #ty: Sync;
-//!     };
-//!
-//!     /* ... */
-//!     # input
-//! }
-//! #
-//! # fn get_a_type() -> Type {
-//! #     unimplemented!()
-//! # }
-//! ```
-//!
-//! By inserting this `assert_sync` fragment into the output code generated by
-//! our macro, the user's code will fail to compile if `ty` does not implement
-//! `Sync`. The errors they would see look like the following.
-//!
-//! ```text
-//! error[E0277]: the trait bound `*const i32: std::marker::Sync` is not satisfied
-//!   --> src/main.rs:10:21
-//!    |
-//! 10 |     bad_field: *const i32,
-//!    |                ^^^^^^^^^^ `*const i32` cannot be shared between threads safely
-//! ```
-//!
-//! In this technique, using the `Type`'s span for the error message makes the
-//! error appear in the correct place underlining the right type.
-//!
-//! <br>
-//!
-//! # Limitations
-//!
-//! The underlying [`proc_macro::Span::join`] method is nightly-only. When
-//! called from within a procedural macro in a nightly compiler, `Spanned` will
-//! use `join` to produce the intended span. When not using a nightly compiler,
-//! only the span of the *first token* of the syntax tree node is returned.
-//!
-//! In the common case of wanting to use the joined span as the span of a
-//! `syn::Error`, consider instead using [`syn::Error::new_spanned`] which is
-//! able to span the error correctly under the complete syntax tree node without
-//! needing the unstable `join`.
-//!
-//! [`syn::Error::new_spanned`]: crate::Error::new_spanned
-
-use proc_macro2::Span;
-use quote::spanned::Spanned as ToTokens;
-
-/// A trait that can provide the `Span` of the complete contents of a syntax
-/// tree node.
-///
-/// This trait is automatically implemented for all types that implement
-/// [`ToTokens`] from the `quote` crate, as well as for `Span` itself.
-///
-/// [`ToTokens`]: quote::ToTokens
-///
-/// See the [module documentation] for an example.
-///
-/// [module documentation]: self
-pub trait Spanned: private::Sealed {
-    /// Returns a `Span` covering the complete contents of this syntax tree
-    /// node, or [`Span::call_site()`] if this node is empty.
-    ///
-    /// [`Span::call_site()`]: proc_macro2::Span::call_site
-    fn span(&self) -> Span;
-}
-
-impl<T: ?Sized + ToTokens> Spanned for T {
-    fn span(&self) -> Span {
-        self.__span()
-    }
-}
-
-mod private {
-    use super::*;
-
-    pub trait Sealed {}
-    impl<T: ?Sized + ToTokens> Sealed for T {}
-
-    #[cfg(any(feature = "full", feature = "derive"))]
-    impl Sealed for crate::QSelf {}
-}
diff --git a/vendor/syn/src/stmt.rs b/vendor/syn/src/stmt.rs
deleted file mode 100644
index b6d0664..0000000
--- a/vendor/syn/src/stmt.rs
+++ /dev/null
@@ -1,452 +0,0 @@
-use super::*;
-
-ast_struct! {
-    /// A braced block containing Rust statements.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct Block {
-        pub brace_token: token::Brace,
-        /// Statements in a block
-        pub stmts: Vec<Stmt>,
-    }
-}
-
-ast_enum! {
-    /// A statement, usually ending in a semicolon.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub enum Stmt {
-        /// A local (let) binding.
-        Local(Local),
-
-        /// An item definition.
-        Item(Item),
-
-        /// Expression, with or without trailing semicolon.
-        Expr(Expr, Option<Token![;]>),
-
-        /// A macro invocation in statement position.
-        ///
-        /// Syntactically it's ambiguous which other kind of statement this
-        /// macro would expand to. It can be any of local variable (`let`),
-        /// item, or expression.
-        Macro(StmtMacro),
-    }
-}
-
-ast_struct! {
-    /// A local `let` binding: `let x: u64 = s.parse()?`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct Local {
-        pub attrs: Vec<Attribute>,
-        pub let_token: Token![let],
-        pub pat: Pat,
-        pub init: Option<LocalInit>,
-        pub semi_token: Token![;],
-    }
-}
-
-ast_struct! {
-    /// The expression assigned in a local `let` binding, including optional
-    /// diverging `else` block.
-    ///
-    /// `LocalInit` represents `= s.parse()?` in `let x: u64 = s.parse()?` and
-    /// `= r else { return }` in `let Ok(x) = r else { return }`.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct LocalInit {
-        pub eq_token: Token![=],
-        pub expr: Box<Expr>,
-        pub diverge: Option<(Token![else], Box<Expr>)>,
-    }
-}
-
-ast_struct! {
-    /// A macro invocation in statement position.
-    ///
-    /// Syntactically it's ambiguous which other kind of statement this macro
-    /// would expand to. It can be any of local variable (`let`), item, or
-    /// expression.
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "full")))]
-    pub struct StmtMacro {
-        pub attrs: Vec<Attribute>,
-        pub mac: Macro,
-        pub semi_token: Option<Token![;]>,
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::*;
-    use crate::parse::discouraged::Speculative as _;
-    use crate::parse::{Parse, ParseStream, Result};
-    use proc_macro2::TokenStream;
-
-    struct AllowNoSemi(bool);
-
-    impl Block {
-        /// Parse the body of a block as zero or more statements, possibly
-        /// including one trailing expression.
-        ///
-        /// # Example
-        ///
-        /// ```
-        /// use syn::{braced, token, Attribute, Block, Ident, Result, Stmt, Token};
-        /// use syn::parse::{Parse, ParseStream};
-        ///
-        /// // Parse a function with no generics or parameter list.
-        /// //
-        /// //     fn playground {
-        /// //         let mut x = 1;
-        /// //         x += 1;
-        /// //         println!("{}", x);
-        /// //     }
-        /// struct MiniFunction {
-        ///     attrs: Vec<Attribute>,
-        ///     fn_token: Token![fn],
-        ///     name: Ident,
-        ///     brace_token: token::Brace,
-        ///     stmts: Vec<Stmt>,
-        /// }
-        ///
-        /// impl Parse for MiniFunction {
-        ///     fn parse(input: ParseStream) -> Result<Self> {
-        ///         let outer_attrs = input.call(Attribute::parse_outer)?;
-        ///         let fn_token: Token![fn] = input.parse()?;
-        ///         let name: Ident = input.parse()?;
-        ///
-        ///         let content;
-        ///         let brace_token = braced!(content in input);
-        ///         let inner_attrs = content.call(Attribute::parse_inner)?;
-        ///         let stmts = content.call(Block::parse_within)?;
-        ///
-        ///         Ok(MiniFunction {
-        ///             attrs: {
-        ///                 let mut attrs = outer_attrs;
-        ///                 attrs.extend(inner_attrs);
-        ///                 attrs
-        ///             },
-        ///             fn_token,
-        ///             name,
-        ///             brace_token,
-        ///             stmts,
-        ///         })
-        ///     }
-        /// }
-        /// ```
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-        pub fn parse_within(input: ParseStream) -> Result<Vec<Stmt>> {
-            let mut stmts = Vec::new();
-            loop {
-                while let semi @ Some(_) = input.parse()? {
-                    stmts.push(Stmt::Expr(Expr::Verbatim(TokenStream::new()), semi));
-                }
-                if input.is_empty() {
-                    break;
-                }
-                let stmt = parse_stmt(input, AllowNoSemi(true))?;
-                let requires_semicolon = match &stmt {
-                    Stmt::Expr(stmt, None) => expr::requires_terminator(stmt),
-                    Stmt::Macro(stmt) => {
-                        stmt.semi_token.is_none() && !stmt.mac.delimiter.is_brace()
-                    }
-                    Stmt::Local(_) | Stmt::Item(_) | Stmt::Expr(_, Some(_)) => false,
-                };
-                stmts.push(stmt);
-                if input.is_empty() {
-                    break;
-                } else if requires_semicolon {
-                    return Err(input.error("unexpected token, expected `;`"));
-                }
-            }
-            Ok(stmts)
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Block {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let content;
-            Ok(Block {
-                brace_token: braced!(content in input),
-                stmts: content.call(Block::parse_within)?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Stmt {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let allow_nosemi = AllowNoSemi(false);
-            parse_stmt(input, allow_nosemi)
-        }
-    }
-
-    fn parse_stmt(input: ParseStream, allow_nosemi: AllowNoSemi) -> Result<Stmt> {
-        let begin = input.fork();
-        let attrs = input.call(Attribute::parse_outer)?;
-
-        // brace-style macros; paren and bracket macros get parsed as
-        // expression statements.
-        let ahead = input.fork();
-        let mut is_item_macro = false;
-        if let Ok(path) = ahead.call(Path::parse_mod_style) {
-            if ahead.peek(Token![!]) {
-                if ahead.peek2(Ident) || ahead.peek2(Token![try]) {
-                    is_item_macro = true;
-                } else if ahead.peek2(token::Brace)
-                    && !(ahead.peek3(Token![.]) || ahead.peek3(Token![?]))
-                {
-                    input.advance_to(&ahead);
-                    return stmt_mac(input, attrs, path).map(Stmt::Macro);
-                }
-            }
-        }
-
-        if input.peek(Token![let]) && !input.peek(token::Group) {
-            stmt_local(input, attrs).map(Stmt::Local)
-        } else if input.peek(Token![pub])
-            || input.peek(Token![crate]) && !input.peek2(Token![::])
-            || input.peek(Token![extern])
-            || input.peek(Token![use])
-            || input.peek(Token![static])
-                && (input.peek2(Token![mut])
-                    || input.peek2(Ident)
-                        && !(input.peek2(Token![async])
-                            && (input.peek3(Token![move]) || input.peek3(Token![|]))))
-            || input.peek(Token![const])
-                && !(input.peek2(token::Brace)
-                    || input.peek2(Token![static])
-                    || input.peek2(Token![async])
-                        && !(input.peek3(Token![unsafe])
-                            || input.peek3(Token![extern])
-                            || input.peek3(Token![fn]))
-                    || input.peek2(Token![move])
-                    || input.peek2(Token![|]))
-            || input.peek(Token![unsafe]) && !input.peek2(token::Brace)
-            || input.peek(Token![async])
-                && (input.peek2(Token![unsafe])
-                    || input.peek2(Token![extern])
-                    || input.peek2(Token![fn]))
-            || input.peek(Token![fn])
-            || input.peek(Token![mod])
-            || input.peek(Token![type])
-            || input.peek(Token![struct])
-            || input.peek(Token![enum])
-            || input.peek(Token![union]) && input.peek2(Ident)
-            || input.peek(Token![auto]) && input.peek2(Token![trait])
-            || input.peek(Token![trait])
-            || input.peek(Token![default])
-                && (input.peek2(Token![unsafe]) || input.peek2(Token![impl]))
-            || input.peek(Token![impl])
-            || input.peek(Token![macro])
-            || is_item_macro
-        {
-            let item = item::parsing::parse_rest_of_item(begin, attrs, input)?;
-            Ok(Stmt::Item(item))
-        } else {
-            stmt_expr(input, allow_nosemi, attrs)
-        }
-    }
-
-    fn stmt_mac(input: ParseStream, attrs: Vec<Attribute>, path: Path) -> Result<StmtMacro> {
-        let bang_token: Token![!] = input.parse()?;
-        let (delimiter, tokens) = mac::parse_delimiter(input)?;
-        let semi_token: Option<Token![;]> = input.parse()?;
-
-        Ok(StmtMacro {
-            attrs,
-            mac: Macro {
-                path,
-                bang_token,
-                delimiter,
-                tokens,
-            },
-            semi_token,
-        })
-    }
-
-    fn stmt_local(input: ParseStream, attrs: Vec<Attribute>) -> Result<Local> {
-        let let_token: Token![let] = input.parse()?;
-
-        let mut pat = Pat::parse_single(input)?;
-        if input.peek(Token![:]) {
-            let colon_token: Token![:] = input.parse()?;
-            let ty: Type = input.parse()?;
-            pat = Pat::Type(PatType {
-                attrs: Vec::new(),
-                pat: Box::new(pat),
-                colon_token,
-                ty: Box::new(ty),
-            });
-        }
-
-        let init = if let Some(eq_token) = input.parse()? {
-            let eq_token: Token![=] = eq_token;
-            let expr: Expr = input.parse()?;
-
-            let diverge = if let Some(else_token) = input.parse()? {
-                let else_token: Token![else] = else_token;
-                let diverge = ExprBlock {
-                    attrs: Vec::new(),
-                    label: None,
-                    block: input.parse()?,
-                };
-                Some((else_token, Box::new(Expr::Block(diverge))))
-            } else {
-                None
-            };
-
-            Some(LocalInit {
-                eq_token,
-                expr: Box::new(expr),
-                diverge,
-            })
-        } else {
-            None
-        };
-
-        let semi_token: Token![;] = input.parse()?;
-
-        Ok(Local {
-            attrs,
-            let_token,
-            pat,
-            init,
-            semi_token,
-        })
-    }
-
-    fn stmt_expr(
-        input: ParseStream,
-        allow_nosemi: AllowNoSemi,
-        mut attrs: Vec<Attribute>,
-    ) -> Result<Stmt> {
-        let mut e = expr::parsing::expr_early(input)?;
-
-        let mut attr_target = &mut e;
-        loop {
-            attr_target = match attr_target {
-                Expr::Assign(e) => &mut e.left,
-                Expr::Binary(e) => &mut e.left,
-                Expr::Cast(e) => &mut e.expr,
-                Expr::Array(_)
-                | Expr::Async(_)
-                | Expr::Await(_)
-                | Expr::Block(_)
-                | Expr::Break(_)
-                | Expr::Call(_)
-                | Expr::Closure(_)
-                | Expr::Const(_)
-                | Expr::Continue(_)
-                | Expr::Field(_)
-                | Expr::ForLoop(_)
-                | Expr::Group(_)
-                | Expr::If(_)
-                | Expr::Index(_)
-                | Expr::Infer(_)
-                | Expr::Let(_)
-                | Expr::Lit(_)
-                | Expr::Loop(_)
-                | Expr::Macro(_)
-                | Expr::Match(_)
-                | Expr::MethodCall(_)
-                | Expr::Paren(_)
-                | Expr::Path(_)
-                | Expr::Range(_)
-                | Expr::Reference(_)
-                | Expr::Repeat(_)
-                | Expr::Return(_)
-                | Expr::Struct(_)
-                | Expr::Try(_)
-                | Expr::TryBlock(_)
-                | Expr::Tuple(_)
-                | Expr::Unary(_)
-                | Expr::Unsafe(_)
-                | Expr::While(_)
-                | Expr::Yield(_)
-                | Expr::Verbatim(_) => break,
-            };
-        }
-        attrs.extend(attr_target.replace_attrs(Vec::new()));
-        attr_target.replace_attrs(attrs);
-
-        let semi_token: Option<Token![;]> = input.parse()?;
-
-        match e {
-            Expr::Macro(ExprMacro { attrs, mac })
-                if semi_token.is_some() || mac.delimiter.is_brace() =>
-            {
-                return Ok(Stmt::Macro(StmtMacro {
-                    attrs,
-                    mac,
-                    semi_token,
-                }));
-            }
-            _ => {}
-        }
-
-        if semi_token.is_some() {
-            Ok(Stmt::Expr(e, semi_token))
-        } else if allow_nosemi.0 || !expr::requires_terminator(&e) {
-            Ok(Stmt::Expr(e, None))
-        } else {
-            Err(input.error("expected semicolon"))
-        }
-    }
-}
-
-#[cfg(feature = "printing")]
-mod printing {
-    use super::*;
-    use proc_macro2::TokenStream;
-    use quote::{ToTokens, TokenStreamExt};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Block {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.brace_token.surround(tokens, |tokens| {
-                tokens.append_all(&self.stmts);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Stmt {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            match self {
-                Stmt::Local(local) => local.to_tokens(tokens),
-                Stmt::Item(item) => item.to_tokens(tokens),
-                Stmt::Expr(expr, semi) => {
-                    expr.to_tokens(tokens);
-                    semi.to_tokens(tokens);
-                }
-                Stmt::Macro(mac) => mac.to_tokens(tokens),
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Local {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            expr::printing::outer_attrs_to_tokens(&self.attrs, tokens);
-            self.let_token.to_tokens(tokens);
-            self.pat.to_tokens(tokens);
-            if let Some(init) = &self.init {
-                init.eq_token.to_tokens(tokens);
-                init.expr.to_tokens(tokens);
-                if let Some((else_token, diverge)) = &init.diverge {
-                    else_token.to_tokens(tokens);
-                    diverge.to_tokens(tokens);
-                }
-            }
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for StmtMacro {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            expr::printing::outer_attrs_to_tokens(&self.attrs, tokens);
-            self.mac.to_tokens(tokens);
-            self.semi_token.to_tokens(tokens);
-        }
-    }
-}
diff --git a/vendor/syn/src/thread.rs b/vendor/syn/src/thread.rs
deleted file mode 100644
index b33d248..0000000
--- a/vendor/syn/src/thread.rs
+++ /dev/null
@@ -1,60 +0,0 @@
-use std::fmt::{self, Debug};
-use std::thread::{self, ThreadId};
-
-/// ThreadBound is a Sync-maker and Send-maker that allows accessing a value
-/// of type T only from the original thread on which the ThreadBound was
-/// constructed.
-pub(crate) struct ThreadBound<T> {
-    value: T,
-    thread_id: ThreadId,
-}
-
-unsafe impl<T> Sync for ThreadBound<T> {}
-
-// Send bound requires Copy, as otherwise Drop could run in the wrong place.
-//
-// Today Copy and Drop are mutually exclusive so `T: Copy` implies `T: !Drop`.
-// This impl needs to be revisited if that restriction is relaxed in the future.
-unsafe impl<T: Copy> Send for ThreadBound<T> {}
-
-impl<T> ThreadBound<T> {
-    pub(crate) fn new(value: T) -> Self {
-        ThreadBound {
-            value,
-            thread_id: thread::current().id(),
-        }
-    }
-
-    pub(crate) fn get(&self) -> Option<&T> {
-        if thread::current().id() == self.thread_id {
-            Some(&self.value)
-        } else {
-            None
-        }
-    }
-}
-
-impl<T: Debug> Debug for ThreadBound<T> {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        match self.get() {
-            Some(value) => Debug::fmt(value, formatter),
-            None => formatter.write_str("unknown"),
-        }
-    }
-}
-
-// Copy the bytes of T, even if the currently running thread is the "wrong"
-// thread. This is fine as long as the original thread is not simultaneously
-// mutating this value via interior mutability, which would be a data race.
-//
-// Currently `T: Copy` is sufficient to guarantee that T contains no interior
-// mutability, because _all_ interior mutability in Rust is built on
-// std::cell::UnsafeCell, which has no Copy impl. This impl needs to be
-// revisited if that restriction is relaxed in the future.
-impl<T: Copy> Copy for ThreadBound<T> {}
-
-impl<T: Copy> Clone for ThreadBound<T> {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
diff --git a/vendor/syn/src/token.rs b/vendor/syn/src/token.rs
deleted file mode 100644
index 05d8f56..0000000
--- a/vendor/syn/src/token.rs
+++ /dev/null
@@ -1,1138 +0,0 @@
-//! Tokens representing Rust punctuation, keywords, and delimiters.
-//!
-//! The type names in this module can be difficult to keep straight, so we
-//! prefer to use the [`Token!`] macro instead. This is a type-macro that
-//! expands to the token type of the given token.
-//!
-//! [`Token!`]: crate::Token
-//!
-//! # Example
-//!
-//! The [`ItemStatic`] syntax tree node is defined like this.
-//!
-//! [`ItemStatic`]: crate::ItemStatic
-//!
-//! ```
-//! # use syn::{Attribute, Expr, Ident, Token, Type, Visibility};
-//! #
-//! pub struct ItemStatic {
-//!     pub attrs: Vec<Attribute>,
-//!     pub vis: Visibility,
-//!     pub static_token: Token![static],
-//!     pub mutability: Option<Token![mut]>,
-//!     pub ident: Ident,
-//!     pub colon_token: Token![:],
-//!     pub ty: Box<Type>,
-//!     pub eq_token: Token![=],
-//!     pub expr: Box<Expr>,
-//!     pub semi_token: Token![;],
-//! }
-//! ```
-//!
-//! # Parsing
-//!
-//! Keywords and punctuation can be parsed through the [`ParseStream::parse`]
-//! method. Delimiter tokens are parsed using the [`parenthesized!`],
-//! [`bracketed!`] and [`braced!`] macros.
-//!
-//! [`ParseStream::parse`]: crate::parse::ParseBuffer::parse()
-//! [`parenthesized!`]: crate::parenthesized!
-//! [`bracketed!`]: crate::bracketed!
-//! [`braced!`]: crate::braced!
-//!
-//! ```
-//! use syn::{Attribute, Result};
-//! use syn::parse::{Parse, ParseStream};
-//! #
-//! # enum ItemStatic {}
-//!
-//! // Parse the ItemStatic struct shown above.
-//! impl Parse for ItemStatic {
-//!     fn parse(input: ParseStream) -> Result<Self> {
-//!         # use syn::ItemStatic;
-//!         # fn parse(input: ParseStream) -> Result<ItemStatic> {
-//!         Ok(ItemStatic {
-//!             attrs: input.call(Attribute::parse_outer)?,
-//!             vis: input.parse()?,
-//!             static_token: input.parse()?,
-//!             mutability: input.parse()?,
-//!             ident: input.parse()?,
-//!             colon_token: input.parse()?,
-//!             ty: input.parse()?,
-//!             eq_token: input.parse()?,
-//!             expr: input.parse()?,
-//!             semi_token: input.parse()?,
-//!         })
-//!         # }
-//!         # unimplemented!()
-//!     }
-//! }
-//! ```
-//!
-//! # Other operations
-//!
-//! Every keyword and punctuation token supports the following operations.
-//!
-//! - [Peeking] — `input.peek(Token![...])`
-//!
-//! - [Parsing] — `input.parse::<Token![...]>()?`
-//!
-//! - [Printing] — `quote!( ... #the_token ... )`
-//!
-//! - Construction from a [`Span`] — `let the_token = Token![...](sp)`
-//!
-//! - Field access to its span — `let sp = the_token.span`
-//!
-//! [Peeking]: crate::parse::ParseBuffer::peek()
-//! [Parsing]: crate::parse::ParseBuffer::parse()
-//! [Printing]: https://docs.rs/quote/1.0/quote/trait.ToTokens.html
-//! [`Span`]: https://docs.rs/proc-macro2/1.0/proc_macro2/struct.Span.html
-
-#[cfg(feature = "parsing")]
-pub(crate) use self::private::CustomToken;
-use self::private::WithSpan;
-#[cfg(feature = "parsing")]
-use crate::buffer::Cursor;
-#[cfg(feature = "parsing")]
-use crate::error::Result;
-#[cfg(feature = "parsing")]
-use crate::lifetime::Lifetime;
-#[cfg(feature = "parsing")]
-use crate::lit::{Lit, LitBool, LitByte, LitByteStr, LitChar, LitFloat, LitInt, LitStr};
-#[cfg(feature = "parsing")]
-use crate::lookahead;
-#[cfg(feature = "parsing")]
-use crate::parse::{Parse, ParseStream};
-use crate::span::IntoSpans;
-use proc_macro2::extra::DelimSpan;
-use proc_macro2::Span;
-#[cfg(feature = "printing")]
-use proc_macro2::TokenStream;
-#[cfg(any(feature = "parsing", feature = "printing"))]
-use proc_macro2::{Delimiter, Ident};
-#[cfg(feature = "parsing")]
-use proc_macro2::{Literal, Punct, TokenTree};
-#[cfg(feature = "printing")]
-use quote::{ToTokens, TokenStreamExt};
-#[cfg(feature = "extra-traits")]
-use std::cmp;
-#[cfg(feature = "extra-traits")]
-use std::fmt::{self, Debug};
-#[cfg(feature = "extra-traits")]
-use std::hash::{Hash, Hasher};
-use std::ops::{Deref, DerefMut};
-
-/// Marker trait for types that represent single tokens.
-///
-/// This trait is sealed and cannot be implemented for types outside of Syn.
-#[cfg(feature = "parsing")]
-pub trait Token: private::Sealed {
-    // Not public API.
-    #[doc(hidden)]
-    fn peek(cursor: Cursor) -> bool;
-
-    // Not public API.
-    #[doc(hidden)]
-    fn display() -> &'static str;
-}
-
-pub(crate) mod private {
-    #[cfg(feature = "parsing")]
-    use crate::buffer::Cursor;
-    use proc_macro2::Span;
-
-    #[cfg(feature = "parsing")]
-    pub trait Sealed {}
-
-    /// Support writing `token.span` rather than `token.spans[0]` on tokens that
-    /// hold a single span.
-    #[repr(transparent)]
-    #[allow(unknown_lints, repr_transparent_external_private_fields)] // False positive: https://github.com/rust-lang/rust/issues/78586#issuecomment-1722680482
-    pub struct WithSpan {
-        pub span: Span,
-    }
-
-    // Not public API.
-    #[doc(hidden)]
-    #[cfg(feature = "parsing")]
-    pub trait CustomToken {
-        fn peek(cursor: Cursor) -> bool;
-        fn display() -> &'static str;
-    }
-}
-
-#[cfg(feature = "parsing")]
-impl private::Sealed for Ident {}
-
-#[cfg(feature = "parsing")]
-fn peek_impl(cursor: Cursor, peek: fn(ParseStream) -> bool) -> bool {
-    use crate::parse::Unexpected;
-    use std::cell::Cell;
-    use std::rc::Rc;
-
-    let scope = Span::call_site();
-    let unexpected = Rc::new(Cell::new(Unexpected::None));
-    let buffer = crate::parse::new_parse_buffer(scope, cursor, unexpected);
-    peek(&buffer)
-}
-
-macro_rules! impl_token {
-    ($display:literal $name:ty) => {
-        #[cfg(feature = "parsing")]
-        impl Token for $name {
-            fn peek(cursor: Cursor) -> bool {
-                fn peek(input: ParseStream) -> bool {
-                    <$name as Parse>::parse(input).is_ok()
-                }
-                peek_impl(cursor, peek)
-            }
-
-            fn display() -> &'static str {
-                $display
-            }
-        }
-
-        #[cfg(feature = "parsing")]
-        impl private::Sealed for $name {}
-    };
-}
-
-impl_token!("lifetime" Lifetime);
-impl_token!("literal" Lit);
-impl_token!("string literal" LitStr);
-impl_token!("byte string literal" LitByteStr);
-impl_token!("byte literal" LitByte);
-impl_token!("character literal" LitChar);
-impl_token!("integer literal" LitInt);
-impl_token!("floating point literal" LitFloat);
-impl_token!("boolean literal" LitBool);
-impl_token!("group token" proc_macro2::Group);
-
-macro_rules! impl_low_level_token {
-    ($display:literal $ty:ident $get:ident) => {
-        #[cfg(feature = "parsing")]
-        impl Token for $ty {
-            fn peek(cursor: Cursor) -> bool {
-                cursor.$get().is_some()
-            }
-
-            fn display() -> &'static str {
-                $display
-            }
-        }
-
-        #[cfg(feature = "parsing")]
-        impl private::Sealed for $ty {}
-    };
-}
-
-impl_low_level_token!("punctuation token" Punct punct);
-impl_low_level_token!("literal" Literal literal);
-impl_low_level_token!("token" TokenTree token_tree);
-
-#[cfg(feature = "parsing")]
-impl<T: CustomToken> private::Sealed for T {}
-
-#[cfg(feature = "parsing")]
-impl<T: CustomToken> Token for T {
-    fn peek(cursor: Cursor) -> bool {
-        <Self as CustomToken>::peek(cursor)
-    }
-
-    fn display() -> &'static str {
-        <Self as CustomToken>::display()
-    }
-}
-
-macro_rules! define_keywords {
-    ($($token:literal pub struct $name:ident)*) => {
-        $(
-            #[doc = concat!('`', $token, '`')]
-            ///
-            /// Don't try to remember the name of this type &mdash; use the
-            /// [`Token!`] macro instead.
-            ///
-            /// [`Token!`]: crate::token
-            pub struct $name {
-                pub span: Span,
-            }
-
-            #[doc(hidden)]
-            #[allow(non_snake_case)]
-            pub fn $name<S: IntoSpans<Span>>(span: S) -> $name {
-                $name {
-                    span: span.into_spans(),
-                }
-            }
-
-            impl std::default::Default for $name {
-                fn default() -> Self {
-                    $name {
-                        span: Span::call_site(),
-                    }
-                }
-            }
-
-            #[cfg(feature = "clone-impls")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-            impl Copy for $name {}
-
-            #[cfg(feature = "clone-impls")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-            impl Clone for $name {
-                fn clone(&self) -> Self {
-                    *self
-                }
-            }
-
-            #[cfg(feature = "extra-traits")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-            impl Debug for $name {
-                fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-                    f.write_str(stringify!($name))
-                }
-            }
-
-            #[cfg(feature = "extra-traits")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-            impl cmp::Eq for $name {}
-
-            #[cfg(feature = "extra-traits")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-            impl PartialEq for $name {
-                fn eq(&self, _other: &$name) -> bool {
-                    true
-                }
-            }
-
-            #[cfg(feature = "extra-traits")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-            impl Hash for $name {
-                fn hash<H: Hasher>(&self, _state: &mut H) {}
-            }
-
-            #[cfg(feature = "printing")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-            impl ToTokens for $name {
-                fn to_tokens(&self, tokens: &mut TokenStream) {
-                    printing::keyword($token, self.span, tokens);
-                }
-            }
-
-            #[cfg(feature = "parsing")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-            impl Parse for $name {
-                fn parse(input: ParseStream) -> Result<Self> {
-                    Ok($name {
-                        span: parsing::keyword(input, $token)?,
-                    })
-                }
-            }
-
-            #[cfg(feature = "parsing")]
-            impl Token for $name {
-                fn peek(cursor: Cursor) -> bool {
-                    parsing::peek_keyword(cursor, $token)
-                }
-
-                fn display() -> &'static str {
-                    concat!("`", $token, "`")
-                }
-            }
-
-            #[cfg(feature = "parsing")]
-            impl private::Sealed for $name {}
-        )*
-    };
-}
-
-macro_rules! impl_deref_if_len_is_1 {
-    ($name:ident/1) => {
-        impl Deref for $name {
-            type Target = WithSpan;
-
-            fn deref(&self) -> &Self::Target {
-                unsafe { &*(self as *const Self).cast::<WithSpan>() }
-            }
-        }
-
-        impl DerefMut for $name {
-            fn deref_mut(&mut self) -> &mut Self::Target {
-                unsafe { &mut *(self as *mut Self).cast::<WithSpan>() }
-            }
-        }
-    };
-
-    ($name:ident/$len:literal) => {};
-}
-
-macro_rules! define_punctuation_structs {
-    ($($token:literal pub struct $name:ident/$len:tt #[doc = $usage:literal])*) => {
-        $(
-            #[cfg_attr(not(doc), repr(transparent))]
-            #[allow(unknown_lints, repr_transparent_external_private_fields)] // False positive: https://github.com/rust-lang/rust/issues/78586#issuecomment-1722680482
-            #[doc = concat!('`', $token, '`')]
-            ///
-            /// Usage:
-            #[doc = concat!($usage, '.')]
-            ///
-            /// Don't try to remember the name of this type &mdash; use the
-            /// [`Token!`] macro instead.
-            ///
-            /// [`Token!`]: crate::token
-            pub struct $name {
-                pub spans: [Span; $len],
-            }
-
-            #[doc(hidden)]
-            #[allow(non_snake_case)]
-            pub fn $name<S: IntoSpans<[Span; $len]>>(spans: S) -> $name {
-                $name {
-                    spans: spans.into_spans(),
-                }
-            }
-
-            impl std::default::Default for $name {
-                fn default() -> Self {
-                    $name {
-                        spans: [Span::call_site(); $len],
-                    }
-                }
-            }
-
-            #[cfg(feature = "clone-impls")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-            impl Copy for $name {}
-
-            #[cfg(feature = "clone-impls")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-            impl Clone for $name {
-                fn clone(&self) -> Self {
-                    *self
-                }
-            }
-
-            #[cfg(feature = "extra-traits")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-            impl Debug for $name {
-                fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-                    f.write_str(stringify!($name))
-                }
-            }
-
-            #[cfg(feature = "extra-traits")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-            impl cmp::Eq for $name {}
-
-            #[cfg(feature = "extra-traits")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-            impl PartialEq for $name {
-                fn eq(&self, _other: &$name) -> bool {
-                    true
-                }
-            }
-
-            #[cfg(feature = "extra-traits")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-            impl Hash for $name {
-                fn hash<H: Hasher>(&self, _state: &mut H) {}
-            }
-
-            impl_deref_if_len_is_1!($name/$len);
-        )*
-    };
-}
-
-macro_rules! define_punctuation {
-    ($($token:literal pub struct $name:ident/$len:tt #[doc = $usage:literal])*) => {
-        $(
-            define_punctuation_structs! {
-                $token pub struct $name/$len #[doc = $usage]
-            }
-
-            #[cfg(feature = "printing")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-            impl ToTokens for $name {
-                fn to_tokens(&self, tokens: &mut TokenStream) {
-                    printing::punct($token, &self.spans, tokens);
-                }
-            }
-
-            #[cfg(feature = "parsing")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-            impl Parse for $name {
-                fn parse(input: ParseStream) -> Result<Self> {
-                    Ok($name {
-                        spans: parsing::punct(input, $token)?,
-                    })
-                }
-            }
-
-            #[cfg(feature = "parsing")]
-            impl Token for $name {
-                fn peek(cursor: Cursor) -> bool {
-                    parsing::peek_punct(cursor, $token)
-                }
-
-                fn display() -> &'static str {
-                    concat!("`", $token, "`")
-                }
-            }
-
-            #[cfg(feature = "parsing")]
-            impl private::Sealed for $name {}
-        )*
-    };
-}
-
-macro_rules! define_delimiters {
-    ($($delim:ident pub struct $name:ident #[$doc:meta])*) => {
-        $(
-            #[$doc]
-            pub struct $name {
-                pub span: DelimSpan,
-            }
-
-            #[doc(hidden)]
-            #[allow(non_snake_case)]
-            pub fn $name<S: IntoSpans<DelimSpan>>(span: S) -> $name {
-                $name {
-                    span: span.into_spans(),
-                }
-            }
-
-            impl std::default::Default for $name {
-                fn default() -> Self {
-                    $name(Span::call_site())
-                }
-            }
-
-            #[cfg(feature = "clone-impls")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-            impl Copy for $name {}
-
-            #[cfg(feature = "clone-impls")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-            impl Clone for $name {
-                fn clone(&self) -> Self {
-                    *self
-                }
-            }
-
-            #[cfg(feature = "extra-traits")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-            impl Debug for $name {
-                fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-                    f.write_str(stringify!($name))
-                }
-            }
-
-            #[cfg(feature = "extra-traits")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-            impl cmp::Eq for $name {}
-
-            #[cfg(feature = "extra-traits")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-            impl PartialEq for $name {
-                fn eq(&self, _other: &$name) -> bool {
-                    true
-                }
-            }
-
-            #[cfg(feature = "extra-traits")]
-            #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-            impl Hash for $name {
-                fn hash<H: Hasher>(&self, _state: &mut H) {}
-            }
-
-            impl $name {
-                #[cfg(feature = "printing")]
-                pub fn surround<F>(&self, tokens: &mut TokenStream, f: F)
-                where
-                    F: FnOnce(&mut TokenStream),
-                {
-                    let mut inner = TokenStream::new();
-                    f(&mut inner);
-                    printing::delim(Delimiter::$delim, self.span.join(), tokens, inner);
-                }
-            }
-
-            #[cfg(feature = "parsing")]
-            impl private::Sealed for $name {}
-        )*
-    };
-}
-
-define_punctuation_structs! {
-    "_" pub struct Underscore/1 /// wildcard patterns, inferred types, unnamed items in constants, extern crates, use declarations, and destructuring assignment
-}
-
-#[cfg(feature = "printing")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-impl ToTokens for Underscore {
-    fn to_tokens(&self, tokens: &mut TokenStream) {
-        tokens.append(Ident::new("_", self.span));
-    }
-}
-
-#[cfg(feature = "parsing")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-impl Parse for Underscore {
-    fn parse(input: ParseStream) -> Result<Self> {
-        input.step(|cursor| {
-            if let Some((ident, rest)) = cursor.ident() {
-                if ident == "_" {
-                    return Ok((Underscore(ident.span()), rest));
-                }
-            }
-            if let Some((punct, rest)) = cursor.punct() {
-                if punct.as_char() == '_' {
-                    return Ok((Underscore(punct.span()), rest));
-                }
-            }
-            Err(cursor.error("expected `_`"))
-        })
-    }
-}
-
-#[cfg(feature = "parsing")]
-impl Token for Underscore {
-    fn peek(cursor: Cursor) -> bool {
-        if let Some((ident, _rest)) = cursor.ident() {
-            return ident == "_";
-        }
-        if let Some((punct, _rest)) = cursor.punct() {
-            return punct.as_char() == '_';
-        }
-        false
-    }
-
-    fn display() -> &'static str {
-        "`_`"
-    }
-}
-
-#[cfg(feature = "parsing")]
-impl private::Sealed for Underscore {}
-
-/// None-delimited group
-pub struct Group {
-    pub span: Span,
-}
-
-#[doc(hidden)]
-#[allow(non_snake_case)]
-pub fn Group<S: IntoSpans<Span>>(span: S) -> Group {
-    Group {
-        span: span.into_spans(),
-    }
-}
-
-impl std::default::Default for Group {
-    fn default() -> Self {
-        Group {
-            span: Span::call_site(),
-        }
-    }
-}
-
-#[cfg(feature = "clone-impls")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Copy for Group {}
-
-#[cfg(feature = "clone-impls")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
-impl Clone for Group {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
-
-#[cfg(feature = "extra-traits")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Debug for Group {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        f.write_str("Group")
-    }
-}
-
-#[cfg(feature = "extra-traits")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl cmp::Eq for Group {}
-
-#[cfg(feature = "extra-traits")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl PartialEq for Group {
-    fn eq(&self, _other: &Group) -> bool {
-        true
-    }
-}
-
-#[cfg(feature = "extra-traits")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
-impl Hash for Group {
-    fn hash<H: Hasher>(&self, _state: &mut H) {}
-}
-
-impl Group {
-    #[cfg(feature = "printing")]
-    pub fn surround<F>(&self, tokens: &mut TokenStream, f: F)
-    where
-        F: FnOnce(&mut TokenStream),
-    {
-        let mut inner = TokenStream::new();
-        f(&mut inner);
-        printing::delim(Delimiter::None, self.span, tokens, inner);
-    }
-}
-
-#[cfg(feature = "parsing")]
-impl private::Sealed for Group {}
-
-#[cfg(feature = "parsing")]
-impl Token for Paren {
-    fn peek(cursor: Cursor) -> bool {
-        lookahead::is_delimiter(cursor, Delimiter::Parenthesis)
-    }
-
-    fn display() -> &'static str {
-        "parentheses"
-    }
-}
-
-#[cfg(feature = "parsing")]
-impl Token for Brace {
-    fn peek(cursor: Cursor) -> bool {
-        lookahead::is_delimiter(cursor, Delimiter::Brace)
-    }
-
-    fn display() -> &'static str {
-        "curly braces"
-    }
-}
-
-#[cfg(feature = "parsing")]
-impl Token for Bracket {
-    fn peek(cursor: Cursor) -> bool {
-        lookahead::is_delimiter(cursor, Delimiter::Bracket)
-    }
-
-    fn display() -> &'static str {
-        "square brackets"
-    }
-}
-
-#[cfg(feature = "parsing")]
-impl Token for Group {
-    fn peek(cursor: Cursor) -> bool {
-        lookahead::is_delimiter(cursor, Delimiter::None)
-    }
-
-    fn display() -> &'static str {
-        "invisible group"
-    }
-}
-
-define_keywords! {
-    "abstract"    pub struct Abstract
-    "as"          pub struct As
-    "async"       pub struct Async
-    "auto"        pub struct Auto
-    "await"       pub struct Await
-    "become"      pub struct Become
-    "box"         pub struct Box
-    "break"       pub struct Break
-    "const"       pub struct Const
-    "continue"    pub struct Continue
-    "crate"       pub struct Crate
-    "default"     pub struct Default
-    "do"          pub struct Do
-    "dyn"         pub struct Dyn
-    "else"        pub struct Else
-    "enum"        pub struct Enum
-    "extern"      pub struct Extern
-    "final"       pub struct Final
-    "fn"          pub struct Fn
-    "for"         pub struct For
-    "if"          pub struct If
-    "impl"        pub struct Impl
-    "in"          pub struct In
-    "let"         pub struct Let
-    "loop"        pub struct Loop
-    "macro"       pub struct Macro
-    "match"       pub struct Match
-    "mod"         pub struct Mod
-    "move"        pub struct Move
-    "mut"         pub struct Mut
-    "override"    pub struct Override
-    "priv"        pub struct Priv
-    "pub"         pub struct Pub
-    "ref"         pub struct Ref
-    "return"      pub struct Return
-    "Self"        pub struct SelfType
-    "self"        pub struct SelfValue
-    "static"      pub struct Static
-    "struct"      pub struct Struct
-    "super"       pub struct Super
-    "trait"       pub struct Trait
-    "try"         pub struct Try
-    "type"        pub struct Type
-    "typeof"      pub struct Typeof
-    "union"       pub struct Union
-    "unsafe"      pub struct Unsafe
-    "unsized"     pub struct Unsized
-    "use"         pub struct Use
-    "virtual"     pub struct Virtual
-    "where"       pub struct Where
-    "while"       pub struct While
-    "yield"       pub struct Yield
-}
-
-define_punctuation! {
-    "&"           pub struct And/1        /// bitwise and logical AND, borrow, references, reference patterns
-    "&&"          pub struct AndAnd/2     /// lazy AND, borrow, references, reference patterns
-    "&="          pub struct AndEq/2      /// bitwise AND assignment
-    "@"           pub struct At/1         /// subpattern binding
-    "^"           pub struct Caret/1      /// bitwise and logical XOR
-    "^="          pub struct CaretEq/2    /// bitwise XOR assignment
-    ":"           pub struct Colon/1      /// various separators
-    ","           pub struct Comma/1      /// various separators
-    "$"           pub struct Dollar/1     /// macros
-    "."           pub struct Dot/1        /// field access, tuple index
-    ".."          pub struct DotDot/2     /// range, struct expressions, patterns, range patterns
-    "..."         pub struct DotDotDot/3  /// variadic functions, range patterns
-    "..="         pub struct DotDotEq/3   /// inclusive range, range patterns
-    "="           pub struct Eq/1         /// assignment, attributes, various type definitions
-    "=="          pub struct EqEq/2       /// equal
-    "=>"          pub struct FatArrow/2   /// match arms, macros
-    ">="          pub struct Ge/2         /// greater than or equal to, generics
-    ">"           pub struct Gt/1         /// greater than, generics, paths
-    "<-"          pub struct LArrow/2     /// unused
-    "<="          pub struct Le/2         /// less than or equal to
-    "<"           pub struct Lt/1         /// less than, generics, paths
-    "-"           pub struct Minus/1      /// subtraction, negation
-    "-="          pub struct MinusEq/2    /// subtraction assignment
-    "!="          pub struct Ne/2         /// not equal
-    "!"           pub struct Not/1        /// bitwise and logical NOT, macro calls, inner attributes, never type, negative impls
-    "|"           pub struct Or/1         /// bitwise and logical OR, closures, patterns in match, if let, and while let
-    "|="          pub struct OrEq/2       /// bitwise OR assignment
-    "||"          pub struct OrOr/2       /// lazy OR, closures
-    "::"          pub struct PathSep/2    /// path separator
-    "%"           pub struct Percent/1    /// remainder
-    "%="          pub struct PercentEq/2  /// remainder assignment
-    "+"           pub struct Plus/1       /// addition, trait bounds, macro Kleene matcher
-    "+="          pub struct PlusEq/2     /// addition assignment
-    "#"           pub struct Pound/1      /// attributes
-    "?"           pub struct Question/1   /// question mark operator, questionably sized, macro Kleene matcher
-    "->"          pub struct RArrow/2     /// function return type, closure return type, function pointer type
-    ";"           pub struct Semi/1       /// terminator for various items and statements, array types
-    "<<"          pub struct Shl/2        /// shift left, nested generics
-    "<<="         pub struct ShlEq/3      /// shift left assignment
-    ">>"          pub struct Shr/2        /// shift right, nested generics
-    ">>="         pub struct ShrEq/3      /// shift right assignment, nested generics
-    "/"           pub struct Slash/1      /// division
-    "/="          pub struct SlashEq/2    /// division assignment
-    "*"           pub struct Star/1       /// multiplication, dereference, raw pointers, macro Kleene matcher, use wildcards
-    "*="          pub struct StarEq/2     /// multiplication assignment
-    "~"           pub struct Tilde/1      /// unused since before Rust 1.0
-}
-
-define_delimiters! {
-    Brace         pub struct Brace        /// `{`&hellip;`}`
-    Bracket       pub struct Bracket      /// `[`&hellip;`]`
-    Parenthesis   pub struct Paren        /// `(`&hellip;`)`
-}
-
-/// A type-macro that expands to the name of the Rust type representation of a
-/// given token.
-///
-/// As a type, `Token!` is commonly used in the type of struct fields, the type
-/// of a `let` statement, or in turbofish for a `parse` function.
-///
-/// ```
-/// use syn::{Ident, Token};
-/// use syn::parse::{Parse, ParseStream, Result};
-///
-/// // `struct Foo;`
-/// pub struct UnitStruct {
-///     struct_token: Token![struct],
-///     ident: Ident,
-///     semi_token: Token![;],
-/// }
-///
-/// impl Parse for UnitStruct {
-///     fn parse(input: ParseStream) -> Result<Self> {
-///         let struct_token: Token![struct] = input.parse()?;
-///         let ident: Ident = input.parse()?;
-///         let semi_token = input.parse::<Token![;]>()?;
-///         Ok(UnitStruct { struct_token, ident, semi_token })
-///     }
-/// }
-/// ```
-///
-/// As an expression, `Token!` is used for peeking tokens or instantiating
-/// tokens from a span.
-///
-/// ```
-/// # use syn::{Ident, Token};
-/// # use syn::parse::{Parse, ParseStream, Result};
-/// #
-/// # struct UnitStruct {
-/// #     struct_token: Token![struct],
-/// #     ident: Ident,
-/// #     semi_token: Token![;],
-/// # }
-/// #
-/// # impl Parse for UnitStruct {
-/// #     fn parse(input: ParseStream) -> Result<Self> {
-/// #         unimplemented!()
-/// #     }
-/// # }
-/// #
-/// fn make_unit_struct(name: Ident) -> UnitStruct {
-///     let span = name.span();
-///     UnitStruct {
-///         struct_token: Token![struct](span),
-///         ident: name,
-///         semi_token: Token![;](span),
-///     }
-/// }
-///
-/// # fn parse(input: ParseStream) -> Result<()> {
-/// if input.peek(Token![struct]) {
-///     let unit_struct: UnitStruct = input.parse()?;
-///     /* ... */
-/// }
-/// # Ok(())
-/// # }
-/// ```
-///
-/// See the [token module] documentation for details and examples.
-///
-/// [token module]: crate::token
-#[macro_export]
-macro_rules! Token {
-    [abstract]    => { $crate::token::Abstract };
-    [as]          => { $crate::token::As };
-    [async]       => { $crate::token::Async };
-    [auto]        => { $crate::token::Auto };
-    [await]       => { $crate::token::Await };
-    [become]      => { $crate::token::Become };
-    [box]         => { $crate::token::Box };
-    [break]       => { $crate::token::Break };
-    [const]       => { $crate::token::Const };
-    [continue]    => { $crate::token::Continue };
-    [crate]       => { $crate::token::Crate };
-    [default]     => { $crate::token::Default };
-    [do]          => { $crate::token::Do };
-    [dyn]         => { $crate::token::Dyn };
-    [else]        => { $crate::token::Else };
-    [enum]        => { $crate::token::Enum };
-    [extern]      => { $crate::token::Extern };
-    [final]       => { $crate::token::Final };
-    [fn]          => { $crate::token::Fn };
-    [for]         => { $crate::token::For };
-    [if]          => { $crate::token::If };
-    [impl]        => { $crate::token::Impl };
-    [in]          => { $crate::token::In };
-    [let]         => { $crate::token::Let };
-    [loop]        => { $crate::token::Loop };
-    [macro]       => { $crate::token::Macro };
-    [match]       => { $crate::token::Match };
-    [mod]         => { $crate::token::Mod };
-    [move]        => { $crate::token::Move };
-    [mut]         => { $crate::token::Mut };
-    [override]    => { $crate::token::Override };
-    [priv]        => { $crate::token::Priv };
-    [pub]         => { $crate::token::Pub };
-    [ref]         => { $crate::token::Ref };
-    [return]      => { $crate::token::Return };
-    [Self]        => { $crate::token::SelfType };
-    [self]        => { $crate::token::SelfValue };
-    [static]      => { $crate::token::Static };
-    [struct]      => { $crate::token::Struct };
-    [super]       => { $crate::token::Super };
-    [trait]       => { $crate::token::Trait };
-    [try]         => { $crate::token::Try };
-    [type]        => { $crate::token::Type };
-    [typeof]      => { $crate::token::Typeof };
-    [union]       => { $crate::token::Union };
-    [unsafe]      => { $crate::token::Unsafe };
-    [unsized]     => { $crate::token::Unsized };
-    [use]         => { $crate::token::Use };
-    [virtual]     => { $crate::token::Virtual };
-    [where]       => { $crate::token::Where };
-    [while]       => { $crate::token::While };
-    [yield]       => { $crate::token::Yield };
-    [&]           => { $crate::token::And };
-    [&&]          => { $crate::token::AndAnd };
-    [&=]          => { $crate::token::AndEq };
-    [@]           => { $crate::token::At };
-    [^]           => { $crate::token::Caret };
-    [^=]          => { $crate::token::CaretEq };
-    [:]           => { $crate::token::Colon };
-    [,]           => { $crate::token::Comma };
-    [$]           => { $crate::token::Dollar };
-    [.]           => { $crate::token::Dot };
-    [..]          => { $crate::token::DotDot };
-    [...]         => { $crate::token::DotDotDot };
-    [..=]         => { $crate::token::DotDotEq };
-    [=]           => { $crate::token::Eq };
-    [==]          => { $crate::token::EqEq };
-    [=>]          => { $crate::token::FatArrow };
-    [>=]          => { $crate::token::Ge };
-    [>]           => { $crate::token::Gt };
-    [<-]          => { $crate::token::LArrow };
-    [<=]          => { $crate::token::Le };
-    [<]           => { $crate::token::Lt };
-    [-]           => { $crate::token::Minus };
-    [-=]          => { $crate::token::MinusEq };
-    [!=]          => { $crate::token::Ne };
-    [!]           => { $crate::token::Not };
-    [|]           => { $crate::token::Or };
-    [|=]          => { $crate::token::OrEq };
-    [||]          => { $crate::token::OrOr };
-    [::]          => { $crate::token::PathSep };
-    [%]           => { $crate::token::Percent };
-    [%=]          => { $crate::token::PercentEq };
-    [+]           => { $crate::token::Plus };
-    [+=]          => { $crate::token::PlusEq };
-    [#]           => { $crate::token::Pound };
-    [?]           => { $crate::token::Question };
-    [->]          => { $crate::token::RArrow };
-    [;]           => { $crate::token::Semi };
-    [<<]          => { $crate::token::Shl };
-    [<<=]         => { $crate::token::ShlEq };
-    [>>]          => { $crate::token::Shr };
-    [>>=]         => { $crate::token::ShrEq };
-    [/]           => { $crate::token::Slash };
-    [/=]          => { $crate::token::SlashEq };
-    [*]           => { $crate::token::Star };
-    [*=]          => { $crate::token::StarEq };
-    [~]           => { $crate::token::Tilde };
-    [_]           => { $crate::token::Underscore };
-}
-
-// Not public API.
-#[doc(hidden)]
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use crate::buffer::Cursor;
-    use crate::error::{Error, Result};
-    use crate::parse::ParseStream;
-    use proc_macro2::{Spacing, Span};
-
-    pub(crate) fn keyword(input: ParseStream, token: &str) -> Result<Span> {
-        input.step(|cursor| {
-            if let Some((ident, rest)) = cursor.ident() {
-                if ident == token {
-                    return Ok((ident.span(), rest));
-                }
-            }
-            Err(cursor.error(format!("expected `{}`", token)))
-        })
-    }
-
-    pub(crate) fn peek_keyword(cursor: Cursor, token: &str) -> bool {
-        if let Some((ident, _rest)) = cursor.ident() {
-            ident == token
-        } else {
-            false
-        }
-    }
-
-    #[doc(hidden)]
-    pub fn punct<const N: usize>(input: ParseStream, token: &str) -> Result<[Span; N]> {
-        let mut spans = [input.span(); N];
-        punct_helper(input, token, &mut spans)?;
-        Ok(spans)
-    }
-
-    fn punct_helper(input: ParseStream, token: &str, spans: &mut [Span]) -> Result<()> {
-        input.step(|cursor| {
-            let mut cursor = *cursor;
-            assert_eq!(token.len(), spans.len());
-
-            for (i, ch) in token.chars().enumerate() {
-                match cursor.punct() {
-                    Some((punct, rest)) => {
-                        spans[i] = punct.span();
-                        if punct.as_char() != ch {
-                            break;
-                        } else if i == token.len() - 1 {
-                            return Ok(((), rest));
-                        } else if punct.spacing() != Spacing::Joint {
-                            break;
-                        }
-                        cursor = rest;
-                    }
-                    None => break,
-                }
-            }
-
-            Err(Error::new(spans[0], format!("expected `{}`", token)))
-        })
-    }
-
-    #[doc(hidden)]
-    pub fn peek_punct(mut cursor: Cursor, token: &str) -> bool {
-        for (i, ch) in token.chars().enumerate() {
-            match cursor.punct() {
-                Some((punct, rest)) => {
-                    if punct.as_char() != ch {
-                        break;
-                    } else if i == token.len() - 1 {
-                        return true;
-                    } else if punct.spacing() != Spacing::Joint {
-                        break;
-                    }
-                    cursor = rest;
-                }
-                None => break,
-            }
-        }
-        false
-    }
-}
-
-// Not public API.
-#[doc(hidden)]
-#[cfg(feature = "printing")]
-pub(crate) mod printing {
-    use proc_macro2::{Delimiter, Group, Ident, Punct, Spacing, Span, TokenStream};
-    use quote::TokenStreamExt;
-
-    #[doc(hidden)]
-    pub fn punct(s: &str, spans: &[Span], tokens: &mut TokenStream) {
-        assert_eq!(s.len(), spans.len());
-
-        let mut chars = s.chars();
-        let mut spans = spans.iter();
-        let ch = chars.next_back().unwrap();
-        let span = spans.next_back().unwrap();
-        for (ch, span) in chars.zip(spans) {
-            let mut op = Punct::new(ch, Spacing::Joint);
-            op.set_span(*span);
-            tokens.append(op);
-        }
-
-        let mut op = Punct::new(ch, Spacing::Alone);
-        op.set_span(*span);
-        tokens.append(op);
-    }
-
-    pub(crate) fn keyword(s: &str, span: Span, tokens: &mut TokenStream) {
-        tokens.append(Ident::new(s, span));
-    }
-
-    pub(crate) fn delim(
-        delim: Delimiter,
-        span: Span,
-        tokens: &mut TokenStream,
-        inner: TokenStream,
-    ) {
-        let mut g = Group::new(delim, inner);
-        g.set_span(span);
-        tokens.append(g);
-    }
-}
diff --git a/vendor/syn/src/tt.rs b/vendor/syn/src/tt.rs
deleted file mode 100644
index d8dc9aa..0000000
--- a/vendor/syn/src/tt.rs
+++ /dev/null
@@ -1,107 +0,0 @@
-use proc_macro2::{Delimiter, TokenStream, TokenTree};
-use std::hash::{Hash, Hasher};
-
-pub(crate) struct TokenTreeHelper<'a>(pub &'a TokenTree);
-
-impl<'a> PartialEq for TokenTreeHelper<'a> {
-    fn eq(&self, other: &Self) -> bool {
-        use proc_macro2::Spacing;
-
-        match (self.0, other.0) {
-            (TokenTree::Group(g1), TokenTree::Group(g2)) => {
-                match (g1.delimiter(), g2.delimiter()) {
-                    (Delimiter::Parenthesis, Delimiter::Parenthesis)
-                    | (Delimiter::Brace, Delimiter::Brace)
-                    | (Delimiter::Bracket, Delimiter::Bracket)
-                    | (Delimiter::None, Delimiter::None) => {}
-                    _ => return false,
-                }
-
-                let s1 = g1.stream().into_iter();
-                let mut s2 = g2.stream().into_iter();
-
-                for item1 in s1 {
-                    let item2 = match s2.next() {
-                        Some(item) => item,
-                        None => return false,
-                    };
-                    if TokenTreeHelper(&item1) != TokenTreeHelper(&item2) {
-                        return false;
-                    }
-                }
-                s2.next().is_none()
-            }
-            (TokenTree::Punct(o1), TokenTree::Punct(o2)) => {
-                o1.as_char() == o2.as_char()
-                    && match (o1.spacing(), o2.spacing()) {
-                        (Spacing::Alone, Spacing::Alone) | (Spacing::Joint, Spacing::Joint) => true,
-                        _ => false,
-                    }
-            }
-            (TokenTree::Literal(l1), TokenTree::Literal(l2)) => l1.to_string() == l2.to_string(),
-            (TokenTree::Ident(s1), TokenTree::Ident(s2)) => s1 == s2,
-            _ => false,
-        }
-    }
-}
-
-impl<'a> Hash for TokenTreeHelper<'a> {
-    fn hash<H: Hasher>(&self, h: &mut H) {
-        use proc_macro2::Spacing;
-
-        match self.0 {
-            TokenTree::Group(g) => {
-                0u8.hash(h);
-                match g.delimiter() {
-                    Delimiter::Parenthesis => 0u8.hash(h),
-                    Delimiter::Brace => 1u8.hash(h),
-                    Delimiter::Bracket => 2u8.hash(h),
-                    Delimiter::None => 3u8.hash(h),
-                }
-
-                for item in g.stream() {
-                    TokenTreeHelper(&item).hash(h);
-                }
-                0xffu8.hash(h); // terminator w/ a variant we don't normally hash
-            }
-            TokenTree::Punct(op) => {
-                1u8.hash(h);
-                op.as_char().hash(h);
-                match op.spacing() {
-                    Spacing::Alone => 0u8.hash(h),
-                    Spacing::Joint => 1u8.hash(h),
-                }
-            }
-            TokenTree::Literal(lit) => (2u8, lit.to_string()).hash(h),
-            TokenTree::Ident(word) => (3u8, word).hash(h),
-        }
-    }
-}
-
-pub(crate) struct TokenStreamHelper<'a>(pub &'a TokenStream);
-
-impl<'a> PartialEq for TokenStreamHelper<'a> {
-    fn eq(&self, other: &Self) -> bool {
-        let left = self.0.clone().into_iter().collect::<Vec<_>>();
-        let right = other.0.clone().into_iter().collect::<Vec<_>>();
-        if left.len() != right.len() {
-            return false;
-        }
-        for (a, b) in left.into_iter().zip(right) {
-            if TokenTreeHelper(&a) != TokenTreeHelper(&b) {
-                return false;
-            }
-        }
-        true
-    }
-}
-
-impl<'a> Hash for TokenStreamHelper<'a> {
-    fn hash<H: Hasher>(&self, state: &mut H) {
-        let tts = self.0.clone().into_iter().collect::<Vec<_>>();
-        tts.len().hash(state);
-        for tt in tts {
-            TokenTreeHelper(&tt).hash(state);
-        }
-    }
-}
diff --git a/vendor/syn/src/ty.rs b/vendor/syn/src/ty.rs
deleted file mode 100644
index 3213e7f..0000000
--- a/vendor/syn/src/ty.rs
+++ /dev/null
@@ -1,1189 +0,0 @@
-use super::*;
-use crate::punctuated::Punctuated;
-use proc_macro2::TokenStream;
-
-ast_enum_of_structs! {
-    /// The possible types that a Rust value could have.
-    ///
-    /// # Syntax tree enum
-    ///
-    /// This type is a [syntax tree enum].
-    ///
-    /// [syntax tree enum]: Expr#syntax-tree-enums
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    #[non_exhaustive]
-    pub enum Type {
-        /// A fixed size array type: `[T; n]`.
-        Array(TypeArray),
-
-        /// A bare function type: `fn(usize) -> bool`.
-        BareFn(TypeBareFn),
-
-        /// A type contained within invisible delimiters.
-        Group(TypeGroup),
-
-        /// An `impl Bound1 + Bound2 + Bound3` type where `Bound` is a trait or
-        /// a lifetime.
-        ImplTrait(TypeImplTrait),
-
-        /// Indication that a type should be inferred by the compiler: `_`.
-        Infer(TypeInfer),
-
-        /// A macro in the type position.
-        Macro(TypeMacro),
-
-        /// The never type: `!`.
-        Never(TypeNever),
-
-        /// A parenthesized type equivalent to the inner type.
-        Paren(TypeParen),
-
-        /// A path like `std::slice::Iter`, optionally qualified with a
-        /// self-type as in `<Vec<T> as SomeTrait>::Associated`.
-        Path(TypePath),
-
-        /// A raw pointer type: `*const T` or `*mut T`.
-        Ptr(TypePtr),
-
-        /// A reference type: `&'a T` or `&'a mut T`.
-        Reference(TypeReference),
-
-        /// A dynamically sized slice type: `[T]`.
-        Slice(TypeSlice),
-
-        /// A trait object type `dyn Bound1 + Bound2 + Bound3` where `Bound` is a
-        /// trait or a lifetime.
-        TraitObject(TypeTraitObject),
-
-        /// A tuple type: `(A, B, C, String)`.
-        Tuple(TypeTuple),
-
-        /// Tokens in type position not interpreted by Syn.
-        Verbatim(TokenStream),
-
-        // For testing exhaustiveness in downstream code, use the following idiom:
-        //
-        //     match ty {
-        //         #![cfg_attr(test, deny(non_exhaustive_omitted_patterns))]
-        //
-        //         Type::Array(ty) => {...}
-        //         Type::BareFn(ty) => {...}
-        //         ...
-        //         Type::Verbatim(ty) => {...}
-        //
-        //         _ => { /* some sane fallback */ }
-        //     }
-        //
-        // This way we fail your tests but don't break your library when adding
-        // a variant. You will be notified by a test failure when a variant is
-        // added, so that you can add code to handle it, but your library will
-        // continue to compile and work for downstream users in the interim.
-    }
-}
-
-ast_struct! {
-    /// A fixed size array type: `[T; n]`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TypeArray {
-        pub bracket_token: token::Bracket,
-        pub elem: Box<Type>,
-        pub semi_token: Token![;],
-        pub len: Expr,
-    }
-}
-
-ast_struct! {
-    /// A bare function type: `fn(usize) -> bool`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TypeBareFn {
-        pub lifetimes: Option<BoundLifetimes>,
-        pub unsafety: Option<Token![unsafe]>,
-        pub abi: Option<Abi>,
-        pub fn_token: Token![fn],
-        pub paren_token: token::Paren,
-        pub inputs: Punctuated<BareFnArg, Token![,]>,
-        pub variadic: Option<BareVariadic>,
-        pub output: ReturnType,
-    }
-}
-
-ast_struct! {
-    /// A type contained within invisible delimiters.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TypeGroup {
-        pub group_token: token::Group,
-        pub elem: Box<Type>,
-    }
-}
-
-ast_struct! {
-    /// An `impl Bound1 + Bound2 + Bound3` type where `Bound` is a trait or
-    /// a lifetime.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TypeImplTrait {
-        pub impl_token: Token![impl],
-        pub bounds: Punctuated<TypeParamBound, Token![+]>,
-    }
-}
-
-ast_struct! {
-    /// Indication that a type should be inferred by the compiler: `_`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TypeInfer {
-        pub underscore_token: Token![_],
-    }
-}
-
-ast_struct! {
-    /// A macro in the type position.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TypeMacro {
-        pub mac: Macro,
-    }
-}
-
-ast_struct! {
-    /// The never type: `!`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TypeNever {
-        pub bang_token: Token![!],
-    }
-}
-
-ast_struct! {
-    /// A parenthesized type equivalent to the inner type.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TypeParen {
-        pub paren_token: token::Paren,
-        pub elem: Box<Type>,
-    }
-}
-
-ast_struct! {
-    /// A path like `std::slice::Iter`, optionally qualified with a
-    /// self-type as in `<Vec<T> as SomeTrait>::Associated`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TypePath {
-        pub qself: Option<QSelf>,
-        pub path: Path,
-    }
-}
-
-ast_struct! {
-    /// A raw pointer type: `*const T` or `*mut T`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TypePtr {
-        pub star_token: Token![*],
-        pub const_token: Option<Token![const]>,
-        pub mutability: Option<Token![mut]>,
-        pub elem: Box<Type>,
-    }
-}
-
-ast_struct! {
-    /// A reference type: `&'a T` or `&'a mut T`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TypeReference {
-        pub and_token: Token![&],
-        pub lifetime: Option<Lifetime>,
-        pub mutability: Option<Token![mut]>,
-        pub elem: Box<Type>,
-    }
-}
-
-ast_struct! {
-    /// A dynamically sized slice type: `[T]`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TypeSlice {
-        pub bracket_token: token::Bracket,
-        pub elem: Box<Type>,
-    }
-}
-
-ast_struct! {
-    /// A trait object type `dyn Bound1 + Bound2 + Bound3` where `Bound` is a
-    /// trait or a lifetime.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TypeTraitObject {
-        pub dyn_token: Option<Token![dyn]>,
-        pub bounds: Punctuated<TypeParamBound, Token![+]>,
-    }
-}
-
-ast_struct! {
-    /// A tuple type: `(A, B, C, String)`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct TypeTuple {
-        pub paren_token: token::Paren,
-        pub elems: Punctuated<Type, Token![,]>,
-    }
-}
-
-ast_struct! {
-    /// The binary interface of a function: `extern "C"`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct Abi {
-        pub extern_token: Token![extern],
-        pub name: Option<LitStr>,
-    }
-}
-
-ast_struct! {
-    /// An argument in a function type: the `usize` in `fn(usize) -> bool`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct BareFnArg {
-        pub attrs: Vec<Attribute>,
-        pub name: Option<(Ident, Token![:])>,
-        pub ty: Type,
-    }
-}
-
-ast_struct! {
-    /// The variadic argument of a function pointer like `fn(usize, ...)`.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub struct BareVariadic {
-        pub attrs: Vec<Attribute>,
-        pub name: Option<(Ident, Token![:])>,
-        pub dots: Token![...],
-        pub comma: Option<Token![,]>,
-    }
-}
-
-ast_enum! {
-    /// Return type of a function signature.
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "full", feature = "derive"))))]
-    pub enum ReturnType {
-        /// Return type is not specified.
-        ///
-        /// Functions default to `()` and closures default to type inference.
-        Default,
-        /// A particular type is returned.
-        Type(Token![->], Box<Type>),
-    }
-}
-
-#[cfg(feature = "parsing")]
-pub(crate) mod parsing {
-    use super::*;
-    use crate::ext::IdentExt as _;
-    use crate::parse::{Parse, ParseStream, Result};
-    use crate::path;
-    use proc_macro2::Span;
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Type {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let allow_plus = true;
-            let allow_group_generic = true;
-            ambig_ty(input, allow_plus, allow_group_generic)
-        }
-    }
-
-    impl Type {
-        /// In some positions, types may not contain the `+` character, to
-        /// disambiguate them. For example in the expression `1 as T`, T may not
-        /// contain a `+` character.
-        ///
-        /// This parser does not allow a `+`, while the default parser does.
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-        pub fn without_plus(input: ParseStream) -> Result<Self> {
-            let allow_plus = false;
-            let allow_group_generic = true;
-            ambig_ty(input, allow_plus, allow_group_generic)
-        }
-    }
-
-    pub(crate) fn ambig_ty(
-        input: ParseStream,
-        allow_plus: bool,
-        allow_group_generic: bool,
-    ) -> Result<Type> {
-        let begin = input.fork();
-
-        if input.peek(token::Group) {
-            let mut group: TypeGroup = input.parse()?;
-            if input.peek(Token![::]) && input.peek3(Ident::peek_any) {
-                if let Type::Path(mut ty) = *group.elem {
-                    Path::parse_rest(input, &mut ty.path, false)?;
-                    return Ok(Type::Path(ty));
-                } else {
-                    return Ok(Type::Path(TypePath {
-                        qself: Some(QSelf {
-                            lt_token: Token![<](group.group_token.span),
-                            position: 0,
-                            as_token: None,
-                            gt_token: Token![>](group.group_token.span),
-                            ty: group.elem,
-                        }),
-                        path: Path::parse_helper(input, false)?,
-                    }));
-                }
-            } else if input.peek(Token![<]) && allow_group_generic
-                || input.peek(Token![::]) && input.peek3(Token![<])
-            {
-                if let Type::Path(mut ty) = *group.elem {
-                    let arguments = &mut ty.path.segments.last_mut().unwrap().arguments;
-                    if arguments.is_none() {
-                        *arguments = PathArguments::AngleBracketed(input.parse()?);
-                        Path::parse_rest(input, &mut ty.path, false)?;
-                        return Ok(Type::Path(ty));
-                    } else {
-                        group.elem = Box::new(Type::Path(ty));
-                    }
-                }
-            }
-            return Ok(Type::Group(group));
-        }
-
-        let mut lifetimes = None::<BoundLifetimes>;
-        let mut lookahead = input.lookahead1();
-        if lookahead.peek(Token![for]) {
-            lifetimes = input.parse()?;
-            lookahead = input.lookahead1();
-            if !lookahead.peek(Ident)
-                && !lookahead.peek(Token![fn])
-                && !lookahead.peek(Token![unsafe])
-                && !lookahead.peek(Token![extern])
-                && !lookahead.peek(Token![super])
-                && !lookahead.peek(Token![self])
-                && !lookahead.peek(Token![Self])
-                && !lookahead.peek(Token![crate])
-                || input.peek(Token![dyn])
-            {
-                return Err(lookahead.error());
-            }
-        }
-
-        if lookahead.peek(token::Paren) {
-            let content;
-            let paren_token = parenthesized!(content in input);
-            if content.is_empty() {
-                return Ok(Type::Tuple(TypeTuple {
-                    paren_token,
-                    elems: Punctuated::new(),
-                }));
-            }
-            if content.peek(Lifetime) {
-                return Ok(Type::Paren(TypeParen {
-                    paren_token,
-                    elem: Box::new(Type::TraitObject(content.parse()?)),
-                }));
-            }
-            if content.peek(Token![?]) {
-                return Ok(Type::TraitObject(TypeTraitObject {
-                    dyn_token: None,
-                    bounds: {
-                        let mut bounds = Punctuated::new();
-                        bounds.push_value(TypeParamBound::Trait(TraitBound {
-                            paren_token: Some(paren_token),
-                            ..content.parse()?
-                        }));
-                        while let Some(plus) = input.parse()? {
-                            bounds.push_punct(plus);
-                            bounds.push_value(input.parse()?);
-                        }
-                        bounds
-                    },
-                }));
-            }
-            let mut first: Type = content.parse()?;
-            if content.peek(Token![,]) {
-                return Ok(Type::Tuple(TypeTuple {
-                    paren_token,
-                    elems: {
-                        let mut elems = Punctuated::new();
-                        elems.push_value(first);
-                        elems.push_punct(content.parse()?);
-                        while !content.is_empty() {
-                            elems.push_value(content.parse()?);
-                            if content.is_empty() {
-                                break;
-                            }
-                            elems.push_punct(content.parse()?);
-                        }
-                        elems
-                    },
-                }));
-            }
-            if allow_plus && input.peek(Token![+]) {
-                loop {
-                    let first = match first {
-                        Type::Path(TypePath { qself: None, path }) => {
-                            TypeParamBound::Trait(TraitBound {
-                                paren_token: Some(paren_token),
-                                modifier: TraitBoundModifier::None,
-                                lifetimes: None,
-                                path,
-                            })
-                        }
-                        Type::TraitObject(TypeTraitObject {
-                            dyn_token: None,
-                            bounds,
-                        }) => {
-                            if bounds.len() > 1 || bounds.trailing_punct() {
-                                first = Type::TraitObject(TypeTraitObject {
-                                    dyn_token: None,
-                                    bounds,
-                                });
-                                break;
-                            }
-                            match bounds.into_iter().next().unwrap() {
-                                TypeParamBound::Trait(trait_bound) => {
-                                    TypeParamBound::Trait(TraitBound {
-                                        paren_token: Some(paren_token),
-                                        ..trait_bound
-                                    })
-                                }
-                                other @ (TypeParamBound::Lifetime(_)
-                                | TypeParamBound::Verbatim(_)) => other,
-                            }
-                        }
-                        _ => break,
-                    };
-                    return Ok(Type::TraitObject(TypeTraitObject {
-                        dyn_token: None,
-                        bounds: {
-                            let mut bounds = Punctuated::new();
-                            bounds.push_value(first);
-                            while let Some(plus) = input.parse()? {
-                                bounds.push_punct(plus);
-                                bounds.push_value(input.parse()?);
-                            }
-                            bounds
-                        },
-                    }));
-                }
-            }
-            Ok(Type::Paren(TypeParen {
-                paren_token,
-                elem: Box::new(first),
-            }))
-        } else if lookahead.peek(Token![fn])
-            || lookahead.peek(Token![unsafe])
-            || lookahead.peek(Token![extern])
-        {
-            let mut bare_fn: TypeBareFn = input.parse()?;
-            bare_fn.lifetimes = lifetimes;
-            Ok(Type::BareFn(bare_fn))
-        } else if lookahead.peek(Ident)
-            || input.peek(Token![super])
-            || input.peek(Token![self])
-            || input.peek(Token![Self])
-            || input.peek(Token![crate])
-            || lookahead.peek(Token![::])
-            || lookahead.peek(Token![<])
-        {
-            let ty: TypePath = input.parse()?;
-            if ty.qself.is_some() {
-                return Ok(Type::Path(ty));
-            }
-
-            if input.peek(Token![!]) && !input.peek(Token![!=]) && ty.path.is_mod_style() {
-                let bang_token: Token![!] = input.parse()?;
-                let (delimiter, tokens) = mac::parse_delimiter(input)?;
-                return Ok(Type::Macro(TypeMacro {
-                    mac: Macro {
-                        path: ty.path,
-                        bang_token,
-                        delimiter,
-                        tokens,
-                    },
-                }));
-            }
-
-            if lifetimes.is_some() || allow_plus && input.peek(Token![+]) {
-                let mut bounds = Punctuated::new();
-                bounds.push_value(TypeParamBound::Trait(TraitBound {
-                    paren_token: None,
-                    modifier: TraitBoundModifier::None,
-                    lifetimes,
-                    path: ty.path,
-                }));
-                if allow_plus {
-                    while input.peek(Token![+]) {
-                        bounds.push_punct(input.parse()?);
-                        if !(input.peek(Ident::peek_any)
-                            || input.peek(Token![::])
-                            || input.peek(Token![?])
-                            || input.peek(Lifetime)
-                            || input.peek(token::Paren))
-                        {
-                            break;
-                        }
-                        bounds.push_value(input.parse()?);
-                    }
-                }
-                return Ok(Type::TraitObject(TypeTraitObject {
-                    dyn_token: None,
-                    bounds,
-                }));
-            }
-
-            Ok(Type::Path(ty))
-        } else if lookahead.peek(Token![dyn]) {
-            let dyn_token: Token![dyn] = input.parse()?;
-            let dyn_span = dyn_token.span;
-            let star_token: Option<Token![*]> = input.parse()?;
-            let bounds = TypeTraitObject::parse_bounds(dyn_span, input, allow_plus)?;
-            return Ok(if star_token.is_some() {
-                Type::Verbatim(verbatim::between(&begin, input))
-            } else {
-                Type::TraitObject(TypeTraitObject {
-                    dyn_token: Some(dyn_token),
-                    bounds,
-                })
-            });
-        } else if lookahead.peek(token::Bracket) {
-            let content;
-            let bracket_token = bracketed!(content in input);
-            let elem: Type = content.parse()?;
-            if content.peek(Token![;]) {
-                Ok(Type::Array(TypeArray {
-                    bracket_token,
-                    elem: Box::new(elem),
-                    semi_token: content.parse()?,
-                    len: content.parse()?,
-                }))
-            } else {
-                Ok(Type::Slice(TypeSlice {
-                    bracket_token,
-                    elem: Box::new(elem),
-                }))
-            }
-        } else if lookahead.peek(Token![*]) {
-            input.parse().map(Type::Ptr)
-        } else if lookahead.peek(Token![&]) {
-            input.parse().map(Type::Reference)
-        } else if lookahead.peek(Token![!]) && !input.peek(Token![=]) {
-            input.parse().map(Type::Never)
-        } else if lookahead.peek(Token![impl]) {
-            TypeImplTrait::parse(input, allow_plus).map(Type::ImplTrait)
-        } else if lookahead.peek(Token![_]) {
-            input.parse().map(Type::Infer)
-        } else if lookahead.peek(Lifetime) {
-            input.parse().map(Type::TraitObject)
-        } else {
-            Err(lookahead.error())
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypeSlice {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let content;
-            Ok(TypeSlice {
-                bracket_token: bracketed!(content in input),
-                elem: content.parse()?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypeArray {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let content;
-            Ok(TypeArray {
-                bracket_token: bracketed!(content in input),
-                elem: content.parse()?,
-                semi_token: content.parse()?,
-                len: content.parse()?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypePtr {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let star_token: Token![*] = input.parse()?;
-
-            let lookahead = input.lookahead1();
-            let (const_token, mutability) = if lookahead.peek(Token![const]) {
-                (Some(input.parse()?), None)
-            } else if lookahead.peek(Token![mut]) {
-                (None, Some(input.parse()?))
-            } else {
-                return Err(lookahead.error());
-            };
-
-            Ok(TypePtr {
-                star_token,
-                const_token,
-                mutability,
-                elem: Box::new(input.call(Type::without_plus)?),
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypeReference {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(TypeReference {
-                and_token: input.parse()?,
-                lifetime: input.parse()?,
-                mutability: input.parse()?,
-                // & binds tighter than +, so we don't allow + here.
-                elem: Box::new(input.call(Type::without_plus)?),
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypeBareFn {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let args;
-            let mut variadic = None;
-
-            Ok(TypeBareFn {
-                lifetimes: input.parse()?,
-                unsafety: input.parse()?,
-                abi: input.parse()?,
-                fn_token: input.parse()?,
-                paren_token: parenthesized!(args in input),
-                inputs: {
-                    let mut inputs = Punctuated::new();
-
-                    while !args.is_empty() {
-                        let attrs = args.call(Attribute::parse_outer)?;
-
-                        if inputs.empty_or_trailing()
-                            && (args.peek(Token![...])
-                                || args.peek(Ident)
-                                    && args.peek2(Token![:])
-                                    && args.peek3(Token![...]))
-                        {
-                            variadic = Some(parse_bare_variadic(&args, attrs)?);
-                            break;
-                        }
-
-                        let allow_self = inputs.is_empty();
-                        let arg = parse_bare_fn_arg(&args, allow_self)?;
-                        inputs.push_value(BareFnArg { attrs, ..arg });
-                        if args.is_empty() {
-                            break;
-                        }
-
-                        let comma = args.parse()?;
-                        inputs.push_punct(comma);
-                    }
-
-                    inputs
-                },
-                variadic,
-                output: input.call(ReturnType::without_plus)?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypeNever {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(TypeNever {
-                bang_token: input.parse()?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypeInfer {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(TypeInfer {
-                underscore_token: input.parse()?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypeTuple {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let content;
-            let paren_token = parenthesized!(content in input);
-
-            if content.is_empty() {
-                return Ok(TypeTuple {
-                    paren_token,
-                    elems: Punctuated::new(),
-                });
-            }
-
-            let first: Type = content.parse()?;
-            Ok(TypeTuple {
-                paren_token,
-                elems: {
-                    let mut elems = Punctuated::new();
-                    elems.push_value(first);
-                    elems.push_punct(content.parse()?);
-                    while !content.is_empty() {
-                        elems.push_value(content.parse()?);
-                        if content.is_empty() {
-                            break;
-                        }
-                        elems.push_punct(content.parse()?);
-                    }
-                    elems
-                },
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypeMacro {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(TypeMacro {
-                mac: input.parse()?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypePath {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let expr_style = false;
-            let (qself, path) = path::parsing::qpath(input, expr_style)?;
-            Ok(TypePath { qself, path })
-        }
-    }
-
-    impl ReturnType {
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-        pub fn without_plus(input: ParseStream) -> Result<Self> {
-            let allow_plus = false;
-            Self::parse(input, allow_plus)
-        }
-
-        pub(crate) fn parse(input: ParseStream, allow_plus: bool) -> Result<Self> {
-            if input.peek(Token![->]) {
-                let arrow = input.parse()?;
-                let allow_group_generic = true;
-                let ty = ambig_ty(input, allow_plus, allow_group_generic)?;
-                Ok(ReturnType::Type(arrow, Box::new(ty)))
-            } else {
-                Ok(ReturnType::Default)
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for ReturnType {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let allow_plus = true;
-            Self::parse(input, allow_plus)
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypeTraitObject {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let allow_plus = true;
-            Self::parse(input, allow_plus)
-        }
-    }
-
-    impl TypeTraitObject {
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-        pub fn without_plus(input: ParseStream) -> Result<Self> {
-            let allow_plus = false;
-            Self::parse(input, allow_plus)
-        }
-
-        // Only allow multiple trait references if allow_plus is true.
-        pub(crate) fn parse(input: ParseStream, allow_plus: bool) -> Result<Self> {
-            let dyn_token: Option<Token![dyn]> = input.parse()?;
-            let dyn_span = match &dyn_token {
-                Some(token) => token.span,
-                None => input.span(),
-            };
-            let bounds = Self::parse_bounds(dyn_span, input, allow_plus)?;
-            Ok(TypeTraitObject { dyn_token, bounds })
-        }
-
-        fn parse_bounds(
-            dyn_span: Span,
-            input: ParseStream,
-            allow_plus: bool,
-        ) -> Result<Punctuated<TypeParamBound, Token![+]>> {
-            let bounds = TypeParamBound::parse_multiple(input, allow_plus)?;
-            let mut last_lifetime_span = None;
-            let mut at_least_one_trait = false;
-            for bound in &bounds {
-                match bound {
-                    TypeParamBound::Trait(_) | TypeParamBound::Verbatim(_) => {
-                        at_least_one_trait = true;
-                        break;
-                    }
-                    TypeParamBound::Lifetime(lifetime) => {
-                        last_lifetime_span = Some(lifetime.ident.span());
-                    }
-                }
-            }
-            // Just lifetimes like `'a + 'b` is not a TraitObject.
-            if !at_least_one_trait {
-                let msg = "at least one trait is required for an object type";
-                return Err(error::new2(dyn_span, last_lifetime_span.unwrap(), msg));
-            }
-            Ok(bounds)
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypeImplTrait {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let allow_plus = true;
-            Self::parse(input, allow_plus)
-        }
-    }
-
-    impl TypeImplTrait {
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-        pub fn without_plus(input: ParseStream) -> Result<Self> {
-            let allow_plus = false;
-            Self::parse(input, allow_plus)
-        }
-
-        pub(crate) fn parse(input: ParseStream, allow_plus: bool) -> Result<Self> {
-            let impl_token: Token![impl] = input.parse()?;
-            let bounds = TypeParamBound::parse_multiple(input, allow_plus)?;
-            let mut last_lifetime_span = None;
-            let mut at_least_one_trait = false;
-            for bound in &bounds {
-                match bound {
-                    TypeParamBound::Trait(_) | TypeParamBound::Verbatim(_) => {
-                        at_least_one_trait = true;
-                        break;
-                    }
-                    TypeParamBound::Lifetime(lifetime) => {
-                        last_lifetime_span = Some(lifetime.ident.span());
-                    }
-                }
-            }
-            if !at_least_one_trait {
-                let msg = "at least one trait must be specified";
-                return Err(error::new2(
-                    impl_token.span,
-                    last_lifetime_span.unwrap(),
-                    msg,
-                ));
-            }
-            Ok(TypeImplTrait { impl_token, bounds })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypeGroup {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let group = crate::group::parse_group(input)?;
-            Ok(TypeGroup {
-                group_token: group.token,
-                elem: group.content.parse()?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for TypeParen {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let allow_plus = false;
-            Self::parse(input, allow_plus)
-        }
-    }
-
-    impl TypeParen {
-        fn parse(input: ParseStream, allow_plus: bool) -> Result<Self> {
-            let content;
-            Ok(TypeParen {
-                paren_token: parenthesized!(content in input),
-                elem: Box::new({
-                    let allow_group_generic = true;
-                    ambig_ty(&content, allow_plus, allow_group_generic)?
-                }),
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for BareFnArg {
-        fn parse(input: ParseStream) -> Result<Self> {
-            let allow_self = false;
-            parse_bare_fn_arg(input, allow_self)
-        }
-    }
-
-    fn parse_bare_fn_arg(input: ParseStream, allow_self: bool) -> Result<BareFnArg> {
-        let attrs = input.call(Attribute::parse_outer)?;
-
-        let begin = input.fork();
-
-        let has_mut_self = allow_self && input.peek(Token![mut]) && input.peek2(Token![self]);
-        if has_mut_self {
-            input.parse::<Token![mut]>()?;
-        }
-
-        let mut has_self = false;
-        let mut name = if (input.peek(Ident) || input.peek(Token![_]) || {
-            has_self = allow_self && input.peek(Token![self]);
-            has_self
-        }) && input.peek2(Token![:])
-            && !input.peek2(Token![::])
-        {
-            let name = input.call(Ident::parse_any)?;
-            let colon: Token![:] = input.parse()?;
-            Some((name, colon))
-        } else {
-            has_self = false;
-            None
-        };
-
-        let ty = if allow_self && !has_self && input.peek(Token![mut]) && input.peek2(Token![self])
-        {
-            input.parse::<Token![mut]>()?;
-            input.parse::<Token![self]>()?;
-            None
-        } else if has_mut_self && name.is_none() {
-            input.parse::<Token![self]>()?;
-            None
-        } else {
-            Some(input.parse()?)
-        };
-
-        let ty = match ty {
-            Some(ty) if !has_mut_self => ty,
-            _ => {
-                name = None;
-                Type::Verbatim(verbatim::between(&begin, input))
-            }
-        };
-
-        Ok(BareFnArg { attrs, name, ty })
-    }
-
-    fn parse_bare_variadic(input: ParseStream, attrs: Vec<Attribute>) -> Result<BareVariadic> {
-        Ok(BareVariadic {
-            attrs,
-            name: if input.peek(Ident) || input.peek(Token![_]) {
-                let name = input.call(Ident::parse_any)?;
-                let colon: Token![:] = input.parse()?;
-                Some((name, colon))
-            } else {
-                None
-            },
-            dots: input.parse()?,
-            comma: input.parse()?,
-        })
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Abi {
-        fn parse(input: ParseStream) -> Result<Self> {
-            Ok(Abi {
-                extern_token: input.parse()?,
-                name: input.parse()?,
-            })
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
-    impl Parse for Option<Abi> {
-        fn parse(input: ParseStream) -> Result<Self> {
-            if input.peek(Token![extern]) {
-                input.parse().map(Some)
-            } else {
-                Ok(None)
-            }
-        }
-    }
-}
-
-#[cfg(feature = "printing")]
-mod printing {
-    use super::*;
-    use crate::attr::FilterAttrs;
-    use crate::print::TokensOrDefault;
-    use proc_macro2::TokenStream;
-    use quote::{ToTokens, TokenStreamExt};
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TypeSlice {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.bracket_token.surround(tokens, |tokens| {
-                self.elem.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TypeArray {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.bracket_token.surround(tokens, |tokens| {
-                self.elem.to_tokens(tokens);
-                self.semi_token.to_tokens(tokens);
-                self.len.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TypePtr {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.star_token.to_tokens(tokens);
-            match &self.mutability {
-                Some(tok) => tok.to_tokens(tokens),
-                None => {
-                    TokensOrDefault(&self.const_token).to_tokens(tokens);
-                }
-            }
-            self.elem.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TypeReference {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.and_token.to_tokens(tokens);
-            self.lifetime.to_tokens(tokens);
-            self.mutability.to_tokens(tokens);
-            self.elem.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TypeBareFn {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.lifetimes.to_tokens(tokens);
-            self.unsafety.to_tokens(tokens);
-            self.abi.to_tokens(tokens);
-            self.fn_token.to_tokens(tokens);
-            self.paren_token.surround(tokens, |tokens| {
-                self.inputs.to_tokens(tokens);
-                if let Some(variadic) = &self.variadic {
-                    if !self.inputs.empty_or_trailing() {
-                        let span = variadic.dots.spans[0];
-                        Token![,](span).to_tokens(tokens);
-                    }
-                    variadic.to_tokens(tokens);
-                }
-            });
-            self.output.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TypeNever {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.bang_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TypeTuple {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.paren_token.surround(tokens, |tokens| {
-                self.elems.to_tokens(tokens);
-                // If we only have one argument, we need a trailing comma to
-                // distinguish TypeTuple from TypeParen.
-                if self.elems.len() == 1 && !self.elems.trailing_punct() {
-                    <Token![,]>::default().to_tokens(tokens);
-                }
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TypePath {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            path::printing::print_path(tokens, &self.qself, &self.path);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TypeTraitObject {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.dyn_token.to_tokens(tokens);
-            self.bounds.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TypeImplTrait {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.impl_token.to_tokens(tokens);
-            self.bounds.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TypeGroup {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.group_token.surround(tokens, |tokens| {
-                self.elem.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TypeParen {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.paren_token.surround(tokens, |tokens| {
-                self.elem.to_tokens(tokens);
-            });
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TypeInfer {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.underscore_token.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for TypeMacro {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.mac.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for ReturnType {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            match self {
-                ReturnType::Default => {}
-                ReturnType::Type(arrow, ty) => {
-                    arrow.to_tokens(tokens);
-                    ty.to_tokens(tokens);
-                }
-            }
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for BareFnArg {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            if let Some((name, colon)) = &self.name {
-                name.to_tokens(tokens);
-                colon.to_tokens(tokens);
-            }
-            self.ty.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for BareVariadic {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            tokens.append_all(self.attrs.outer());
-            if let Some((name, colon)) = &self.name {
-                name.to_tokens(tokens);
-                colon.to_tokens(tokens);
-            }
-            self.dots.to_tokens(tokens);
-            self.comma.to_tokens(tokens);
-        }
-    }
-
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
-    impl ToTokens for Abi {
-        fn to_tokens(&self, tokens: &mut TokenStream) {
-            self.extern_token.to_tokens(tokens);
-            self.name.to_tokens(tokens);
-        }
-    }
-}
diff --git a/vendor/syn/src/verbatim.rs b/vendor/syn/src/verbatim.rs
deleted file mode 100644
index 54dc1cf..0000000
--- a/vendor/syn/src/verbatim.rs
+++ /dev/null
@@ -1,33 +0,0 @@
-use crate::parse::ParseStream;
-use proc_macro2::{Delimiter, TokenStream};
-use std::cmp::Ordering;
-use std::iter;
-
-pub(crate) fn between<'a>(begin: ParseStream<'a>, end: ParseStream<'a>) -> TokenStream {
-    let end = end.cursor();
-    let mut cursor = begin.cursor();
-    assert!(crate::buffer::same_buffer(end, cursor));
-
-    let mut tokens = TokenStream::new();
-    while cursor != end {
-        let (tt, next) = cursor.token_tree().unwrap();
-
-        if crate::buffer::cmp_assuming_same_buffer(end, next) == Ordering::Less {
-            // A syntax node can cross the boundary of a None-delimited group
-            // due to such groups being transparent to the parser in most cases.
-            // Any time this occurs the group is known to be semantically
-            // irrelevant. https://github.com/dtolnay/syn/issues/1235
-            if let Some((inside, _span, after)) = cursor.group(Delimiter::None) {
-                assert!(next == after);
-                cursor = inside;
-                continue;
-            } else {
-                panic!("verbatim end must not be inside a delimited group");
-            }
-        }
-
-        tokens.extend(iter::once(tt));
-        cursor = next;
-    }
-    tokens
-}
diff --git a/vendor/syn/src/whitespace.rs b/vendor/syn/src/whitespace.rs
deleted file mode 100644
index f8de1b9..0000000
--- a/vendor/syn/src/whitespace.rs
+++ /dev/null
@@ -1,65 +0,0 @@
-pub(crate) fn skip(mut s: &str) -> &str {
-    'skip: while !s.is_empty() {
-        let byte = s.as_bytes()[0];
-        if byte == b'/' {
-            if s.starts_with("//")
-                && (!s.starts_with("///") || s.starts_with("////"))
-                && !s.starts_with("//!")
-            {
-                if let Some(i) = s.find('\n') {
-                    s = &s[i + 1..];
-                    continue;
-                } else {
-                    return "";
-                }
-            } else if s.starts_with("/**/") {
-                s = &s[4..];
-                continue;
-            } else if s.starts_with("/*")
-                && (!s.starts_with("/**") || s.starts_with("/***"))
-                && !s.starts_with("/*!")
-            {
-                let mut depth = 0;
-                let bytes = s.as_bytes();
-                let mut i = 0;
-                let upper = bytes.len() - 1;
-                while i < upper {
-                    if bytes[i] == b'/' && bytes[i + 1] == b'*' {
-                        depth += 1;
-                        i += 1; // eat '*'
-                    } else if bytes[i] == b'*' && bytes[i + 1] == b'/' {
-                        depth -= 1;
-                        if depth == 0 {
-                            s = &s[i + 2..];
-                            continue 'skip;
-                        }
-                        i += 1; // eat '/'
-                    }
-                    i += 1;
-                }
-                return s;
-            }
-        }
-        match byte {
-            b' ' | 0x09..=0x0d => {
-                s = &s[1..];
-                continue;
-            }
-            b if b <= 0x7f => {}
-            _ => {
-                let ch = s.chars().next().unwrap();
-                if is_whitespace(ch) {
-                    s = &s[ch.len_utf8()..];
-                    continue;
-                }
-            }
-        }
-        return s;
-    }
-    s
-}
-
-fn is_whitespace(ch: char) -> bool {
-    // Rust treats left-to-right mark and right-to-left mark as whitespace
-    ch.is_whitespace() || ch == '\u{200e}' || ch == '\u{200f}'
-}