File: macro-multiple-matcher-bindings.rs

package info (click to toggle)
rustc-web 1.70.0%2Bdfsg1-7~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,517,036 kB
  • sloc: xml: 147,962; javascript: 10,210; sh: 8,590; python: 8,220; ansic: 5,901; cpp: 4,635; makefile: 4,006; asm: 2,856
file content (21 lines) | stat: -rw-r--r-- 570 bytes parent folder | download | duplicates (16)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
// Test that duplicate matcher binding names are caught at declaration time, rather than at macro
// invocation time.

#![allow(unused_macros)]

macro_rules! foo1 {
    ($a:ident, $a:ident) => {}; //~ERROR duplicate matcher binding
    ($a:ident, $a:path) => {};  //~ERROR duplicate matcher binding
}

macro_rules! foo2 {
    ($a:ident) => {}; // OK
    ($a:path) => {};  // OK
}

macro_rules! foo3 {
    ($a:ident, $($a:ident),*) => {}; //~ERROR duplicate matcher binding
    ($($a:ident)+ # $($($a:path),+);*) => {}; //~ERROR duplicate matcher binding
}

fn main() {}