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-rw-r--r--vendor/thiserror-impl/src/fmt.rs170
1 files changed, 0 insertions, 170 deletions
diff --git a/vendor/thiserror-impl/src/fmt.rs b/vendor/thiserror-impl/src/fmt.rs
deleted file mode 100644
index 807dfb9..0000000
--- a/vendor/thiserror-impl/src/fmt.rs
+++ /dev/null
@@ -1,170 +0,0 @@
-use crate::ast::Field;
-use crate::attr::{Display, Trait};
-use proc_macro2::TokenTree;
-use quote::{format_ident, quote_spanned};
-use std::collections::{BTreeSet as Set, HashMap as Map};
-use syn::ext::IdentExt;
-use syn::parse::{ParseStream, Parser};
-use syn::{Ident, Index, LitStr, Member, Result, Token};
-
-impl Display<'_> {
- // Transform `"error {var}"` to `"error {}", var`.
- pub fn expand_shorthand(&mut self, fields: &[Field]) {
- let raw_args = self.args.clone();
- let mut named_args = explicit_named_args.parse2(raw_args).unwrap();
- let mut member_index = Map::new();
- for (i, field) in fields.iter().enumerate() {
- member_index.insert(&field.member, i);
- }
-
- let span = self.fmt.span();
- let fmt = self.fmt.value();
- let mut read = fmt.as_str();
- let mut out = String::new();
- let mut args = self.args.clone();
- let mut has_bonus_display = false;
- let mut implied_bounds = Set::new();
-
- let mut has_trailing_comma = false;
- if let Some(TokenTree::Punct(punct)) = args.clone().into_iter().last() {
- if punct.as_char() == ',' {
- has_trailing_comma = true;
- }
- }
-
- while let Some(brace) = read.find('{') {
- out += &read[..brace + 1];
- read = &read[brace + 1..];
- if read.starts_with('{') {
- out.push('{');
- read = &read[1..];
- continue;
- }
- let next = match read.chars().next() {
- Some(next) => next,
- None => return,
- };
- let member = match next {
- '0'..='9' => {
- let int = take_int(&mut read);
- let member = match int.parse::<u32>() {
- Ok(index) => Member::Unnamed(Index { index, span }),
- Err(_) => return,
- };
- if !member_index.contains_key(&member) {
- out += &int;
- continue;
- }
- member
- }
- 'a'..='z' | 'A'..='Z' | '_' => {
- let mut ident = take_ident(&mut read);
- ident.set_span(span);
- Member::Named(ident)
- }
- _ => continue,
- };
- if let Some(&field) = member_index.get(&member) {
- let end_spec = match read.find('}') {
- Some(end_spec) => end_spec,
- None => return,
- };
- let bound = match read[..end_spec].chars().next_back() {
- Some('?') => Trait::Debug,
- Some('o') => Trait::Octal,
- Some('x') => Trait::LowerHex,
- Some('X') => Trait::UpperHex,
- Some('p') => Trait::Pointer,
- Some('b') => Trait::Binary,
- Some('e') => Trait::LowerExp,
- Some('E') => Trait::UpperExp,
- Some(_) | None => Trait::Display,
- };
- implied_bounds.insert((field, bound));
- }
- let local = match &member {
- Member::Unnamed(index) => format_ident!("_{}", index),
- Member::Named(ident) => ident.clone(),
- };
- let mut formatvar = local.clone();
- if formatvar.to_string().starts_with("r#") {
- formatvar = format_ident!("r_{}", formatvar);
- }
- if formatvar.to_string().starts_with('_') {
- // Work around leading underscore being rejected by 1.40 and
- // older compilers. https://github.com/rust-lang/rust/pull/66847
- formatvar = format_ident!("field_{}", formatvar);
- }
- out += &formatvar.to_string();
- if !named_args.insert(formatvar.clone()) {
- // Already specified in the format argument list.
- continue;
- }
- if !has_trailing_comma {
- args.extend(quote_spanned!(span=> ,));
- }
- args.extend(quote_spanned!(span=> #formatvar = #local));
- if read.starts_with('}') && member_index.contains_key(&member) {
- has_bonus_display = true;
- args.extend(quote_spanned!(span=> .as_display()));
- }
- has_trailing_comma = false;
- }
-
- out += read;
- self.fmt = LitStr::new(&out, self.fmt.span());
- self.args = args;
- self.has_bonus_display = has_bonus_display;
- self.implied_bounds = implied_bounds;
- }
-}
-
-fn explicit_named_args(input: ParseStream) -> Result<Set<Ident>> {
- let mut named_args = Set::new();
-
- while !input.is_empty() {
- if input.peek(Token![,]) && input.peek2(Ident::peek_any) && input.peek3(Token![=]) {
- input.parse::<Token![,]>()?;
- let ident = input.call(Ident::parse_any)?;
- input.parse::<Token![=]>()?;
- named_args.insert(ident);
- } else {
- input.parse::<TokenTree>()?;
- }
- }
-
- Ok(named_args)
-}
-
-fn take_int(read: &mut &str) -> String {
- let mut int = String::new();
- for (i, ch) in read.char_indices() {
- match ch {
- '0'..='9' => int.push(ch),
- _ => {
- *read = &read[i..];
- break;
- }
- }
- }
- int
-}
-
-fn take_ident(read: &mut &str) -> Ident {
- let mut ident = String::new();
- let raw = read.starts_with("r#");
- if raw {
- ident.push_str("r#");
- *read = &read[2..];
- }
- for (i, ch) in read.char_indices() {
- match ch {
- 'a'..='z' | 'A'..='Z' | '0'..='9' | '_' => ident.push(ch),
- _ => {
- *read = &read[i..];
- break;
- }
- }
- }
- Ident::parse_any.parse_str(&ident).unwrap()
-}