27 lines
1.2 KiB
Rust
27 lines
1.2 KiB
Rust
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// ignore-tidy-linelength
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// run-rustfix
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#![feature(edition_macro_pats)]
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#![deny(or_patterns_back_compat)]
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#![allow(unused_macros)]
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macro_rules! foo { ($x:pat | $y:pat) => {} } //~ ERROR the meaning of the pat fragment specific is changing in Rust 2021, which may affect this macro
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macro_rules! bar { ($($x:pat)+ | $($y:pat)+) => {} } //~ ERROR the meaning of the pat fragment specific is changing in Rust 2021, which may affect this macro
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macro_rules! baz { ($x:pat2015 | $y:pat2015) => {} } // should be ok
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macro_rules! qux { ($x:pat2015 | $y:pat) => {} } // should be ok
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macro_rules! ogg { ($x:pat | $y:pat2015) => {} } //~ ERROR the meaning of the pat fragment specific is changing in Rust 2021, which may affect this macro
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macro_rules! match_any {
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( $expr:expr , $( $( $pat:pat )|+ => $expr_arm:expr ),+ ) => { //~ ERROR the meaning of the pat fragment specific is changing in Rust 2021, which may affect this macro
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match $expr {
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$(
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$( $pat => $expr_arm, )+
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)+
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}
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};
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}
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fn main() {
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let result: Result<i64, i32> = Err(42);
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let int: i64 = match_any!(result, Ok(i) | Err(i) => i.into());
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assert_eq!(int, 42);
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}
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