diff options
Diffstat (limited to 'third_party/rust/thiserror-impl')
| -rw-r--r-- | third_party/rust/thiserror-impl/.cargo-checksum.json | 2 | ||||
| -rw-r--r-- | third_party/rust/thiserror-impl/Cargo.toml | 2 | ||||
| -rw-r--r-- | third_party/rust/thiserror-impl/src/attr.rs | 34 | ||||
| -rw-r--r-- | third_party/rust/thiserror-impl/src/fmt.rs | 3 |
4 files changed, 35 insertions, 6 deletions
diff --git a/third_party/rust/thiserror-impl/.cargo-checksum.json b/third_party/rust/thiserror-impl/.cargo-checksum.json index f091d556de..6adcf117c2 100644 --- a/third_party/rust/thiserror-impl/.cargo-checksum.json +++ b/third_party/rust/thiserror-impl/.cargo-checksum.json @@ -1 +1 @@ -{"files":{"Cargo.toml":"b387bf85702168709e2619d65e68e1860dca1021ddd91346a09ec8bd1cc80471","LICENSE-APACHE":"62c7a1e35f56406896d7aa7ca52d0cc0d272ac022b5d2796e7d6905db8a3636a","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","src/ast.rs":"e2fbc32e91cd462757107c1f8ab2f888f08c865ac71270583f9e11b83e3c32ca","src/attr.rs":"ad5319f053a18ec3841300b2ae553ffa005749ba7099fe4b318126223e4dcbdf","src/expand.rs":"9469753e0949556848183084e0f22521c6300d38ca0de196441446c50f350d3c","src/fmt.rs":"d63d39120c18712596f9f2a1715821148c2becd4d8bad5bc1b307210a84dbe98","src/generics.rs":"2076cde22271be355a8131a77add4b93f83ab0af4317cd2df5471fffa4f95c66","src/lib.rs":"5eea86c771e643328ad9bc3b881cce4bf9d50adae1b33e0d07645bdd9044003d","src/prop.rs":"5ba613e38430831259f20b258f33d57dcb783fbaeeb49e5faffa7b2a7be99e67","src/span.rs":"430460a4fa0d1fa9c627c1ddd575d2b101778fea84217591e1a93a5f6a2a0132","src/valid.rs":"ac95253944fd360d3578d0643a7baabb2cfa6bf9fbced7a6ce1f7b0529a3bb98"},"package":"fa0faa943b50f3db30a20aa7e265dbc66076993efed8463e8de414e5d06d3471"}
\ No newline at end of file +{"files":{"Cargo.toml":"0a1dbd3bcb92455b7ed1d661e0c05958a64fd694a18357d3c61a8e1f2cffb9bd","LICENSE-APACHE":"62c7a1e35f56406896d7aa7ca52d0cc0d272ac022b5d2796e7d6905db8a3636a","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","src/ast.rs":"e2fbc32e91cd462757107c1f8ab2f888f08c865ac71270583f9e11b83e3c32ca","src/attr.rs":"7451fc0b0a06649e62679c7558e5aeb0e2019400c170cde54c23289ef44188f7","src/expand.rs":"9469753e0949556848183084e0f22521c6300d38ca0de196441446c50f350d3c","src/fmt.rs":"5d1cefc012403c2d4ff7ab2513c0ec559166df4271d5983a6463939b5ec8c3e1","src/generics.rs":"2076cde22271be355a8131a77add4b93f83ab0af4317cd2df5471fffa4f95c66","src/lib.rs":"5eea86c771e643328ad9bc3b881cce4bf9d50adae1b33e0d07645bdd9044003d","src/prop.rs":"5ba613e38430831259f20b258f33d57dcb783fbaeeb49e5faffa7b2a7be99e67","src/span.rs":"430460a4fa0d1fa9c627c1ddd575d2b101778fea84217591e1a93a5f6a2a0132","src/valid.rs":"ac95253944fd360d3578d0643a7baabb2cfa6bf9fbced7a6ce1f7b0529a3bb98"},"package":"a953cb265bef375dae3de6663da4d3804eee9682ea80d8e2542529b73c531c81"}
\ No newline at end of file diff --git a/third_party/rust/thiserror-impl/Cargo.toml b/third_party/rust/thiserror-impl/Cargo.toml index fffdf5c3a4..5445c126ec 100644 --- a/third_party/rust/thiserror-impl/Cargo.toml +++ b/third_party/rust/thiserror-impl/Cargo.toml @@ -13,7 +13,7 @@ edition = "2021" rust-version = "1.56" name = "thiserror-impl" -version = "1.0.56" +version = "1.0.57" authors = ["David Tolnay <dtolnay@gmail.com>"] description = "Implementation detail of the `thiserror` crate" license = "MIT OR Apache-2.0" diff --git a/third_party/rust/thiserror-impl/src/attr.rs b/third_party/rust/thiserror-impl/src/attr.rs index 4beb8c9628..269c69eca5 100644 --- a/third_party/rust/thiserror-impl/src/attr.rs +++ b/third_party/rust/thiserror-impl/src/attr.rs @@ -1,6 +1,7 @@ use proc_macro2::{Delimiter, Group, Span, TokenStream, TokenTree}; use quote::{format_ident, quote, ToTokens}; use std::collections::BTreeSet as Set; +use syn::parse::discouraged::Speculative; use syn::parse::ParseStream; use syn::{ braced, bracketed, parenthesized, token, Attribute, Error, Ident, Index, LitInt, LitStr, Meta, @@ -20,6 +21,7 @@ pub struct Display<'a> { pub original: &'a Attribute, pub fmt: LitStr, pub args: TokenStream, + pub requires_fmt_machinery: bool, pub has_bonus_display: bool, pub implied_bounds: Set<(usize, Trait)>, } @@ -103,10 +105,24 @@ fn parse_error_attribute<'a>(attrs: &mut Attrs<'a>, attr: &'a Attribute) -> Resu return Ok(()); } + let fmt: LitStr = input.parse()?; + + let ahead = input.fork(); + ahead.parse::<Option<Token![,]>>()?; + let args = if ahead.is_empty() { + input.advance_to(&ahead); + TokenStream::new() + } else { + parse_token_expr(input, false)? + }; + + let requires_fmt_machinery = !args.is_empty(); + let display = Display { original: attr, - fmt: input.parse()?, - args: parse_token_expr(input, false)?, + fmt, + args, + requires_fmt_machinery, has_bonus_display: false, implied_bounds: Set::new(), }; @@ -196,8 +212,18 @@ impl ToTokens for Display<'_> { fn to_tokens(&self, tokens: &mut TokenStream) { let fmt = &self.fmt; let args = &self.args; - tokens.extend(quote! { - ::core::write!(__formatter, #fmt #args) + + // Currently `write!(f, "text")` produces less efficient code than + // `f.write_str("text")`. We recognize the case when the format string + // has no braces and no interpolated values, and generate simpler code. + tokens.extend(if self.requires_fmt_machinery { + quote! { + ::core::write!(__formatter, #fmt #args) + } + } else { + quote! { + __formatter.write_str(#fmt) + } }); } } diff --git a/third_party/rust/thiserror-impl/src/fmt.rs b/third_party/rust/thiserror-impl/src/fmt.rs index 807dfb9677..b38b7bf1f5 100644 --- a/third_party/rust/thiserror-impl/src/fmt.rs +++ b/third_party/rust/thiserror-impl/src/fmt.rs @@ -32,7 +32,10 @@ impl Display<'_> { } } + self.requires_fmt_machinery = self.requires_fmt_machinery || fmt.contains('}'); + while let Some(brace) = read.find('{') { + self.requires_fmt_machinery = true; out += &read[..brace + 1]; read = &read[brace + 1..]; if read.starts_with('{') { |