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|
fn main() {}
pub fn example(x: Option<usize>) {
match x {
Some(0 | 1 | 2) => {}
//~^ ERROR: or-patterns syntax is experimental
_ => {}
}
}
// Test the `pat` macro fragment parser:
macro_rules! accept_pat {
($p:pat) => {}
}
accept_pat!((p | q)); //~ ERROR or-patterns syntax is experimental
accept_pat!((p | q,)); //~ ERROR or-patterns syntax is experimental
accept_pat!(TS(p | q)); //~ ERROR or-patterns syntax is experimental
accept_pat!(NS { f: p | q }); //~ ERROR or-patterns syntax is experimental
accept_pat!([p | q]); //~ ERROR or-patterns syntax is experimental
// Non-macro tests:
#[cfg(FALSE)]
fn or_patterns() {
// Gated:
let | A | B; //~ ERROR or-patterns syntax is experimental
let A | B; //~ ERROR or-patterns syntax is experimental
for | A | B in 0 {} //~ ERROR or-patterns syntax is experimental
for A | B in 0 {} //~ ERROR or-patterns syntax is experimental
fn fun((A | B): _) {} //~ ERROR or-patterns syntax is experimental
let _ = |(A | B): u8| (); //~ ERROR or-patterns syntax is experimental
let (A | B); //~ ERROR or-patterns syntax is experimental
let (A | B,); //~ ERROR or-patterns syntax is experimental
let A(B | C); //~ ERROR or-patterns syntax is experimental
let E::V(B | C); //~ ERROR or-patterns syntax is experimental
let S { f1: B | C, f2 }; //~ ERROR or-patterns syntax is experimental
let E::V { f1: B | C, f2 }; //~ ERROR or-patterns syntax is experimental
let [A | B]; //~ ERROR or-patterns syntax is experimental
// Top level of `while`, `if`, and `match` arms are allowed:
while let | A = 0 {}
while let A | B = 0 {}
if let | A = 0 {}
if let A | B = 0 {}
match 0 {
| A => {},
A | B => {},
}
}
|
