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Rollup merge of #108829 - xfix:use-edition-2021-pat-in-matches, r=Mark-Simulacrum

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Use Edition 2021 :pat in matches macro

This makes the macro syntax used in documentation more readable.
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Dylan DPC 2023-03-19 15:33:56 +05:30 • committed by GitHub
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4
library/core/src/macros/mod.rs
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@ -340,9 +340,9 @@ pub macro debug_assert_matches($($arg:tt)*) {
#[stable(feature = "matches_macro", since = "1.42.0")] #[stable(feature = "matches_macro", since = "1.42.0")]
#[cfg_attr(not(test), rustc_diagnostic_item = "matches_macro")] #[cfg_attr(not(test), rustc_diagnostic_item = "matches_macro")]
macro_rules! matches { macro_rules! matches {
($expression:expr, $(|)? $( $pattern:pat_param )|+ $( if $guard: expr )? $(,)?) => { ($expression:expr, $pattern:pat $(if $guard:expr)? $(,)?) => {
match $expression { match $expression {
$( $pattern )|+ $( if $guard )? => true, $pattern $(if $guard)? => true,
_ => false _ => false
} }
}; };