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author | Valentin Popov <valentin@popov.link> | 2024-07-19 15:37:58 +0300 |
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committer | Valentin Popov <valentin@popov.link> | 2024-07-19 15:37:58 +0300 |
commit | a990de90fe41456a23e58bd087d2f107d321f3a1 (patch) | |
tree | 15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/syn/src/parse_quote.rs | |
parent | 3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff) | |
download | fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip |
Deleted vendor folder
Diffstat (limited to 'vendor/syn/src/parse_quote.rs')
-rw-r--r-- | vendor/syn/src/parse_quote.rs | 209 |
1 files changed, 0 insertions, 209 deletions
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) - } -} |