mirror of https://github.com/rust-lang/rust
40 lines
787 B
Rust
40 lines
787 B
Rust
// Test bindings-after-at with slice-patterns
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//@ run-pass
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#[derive(Debug, PartialEq)]
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enum MatchArm {
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Arm(usize),
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Wild,
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}
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fn test(foo: &[i32]) -> MatchArm {
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match foo {
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[bar @ .., n] if n == &5 => {
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for i in bar {
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assert!(i < &5);
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}
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MatchArm::Arm(0)
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},
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bar @ [x0, .., xn] => {
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assert_eq!(x0, &1);
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assert_eq!(x0, &1);
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assert_eq!(xn, &4);
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assert_eq!(bar, &[1, 2, 3, 4]);
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MatchArm::Arm(1)
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},
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_ => MatchArm::Wild,
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}
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}
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fn main() {
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let foo = vec![1, 2, 3, 4, 5];
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assert_eq!(test(&foo), MatchArm::Arm(0));
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assert_eq!(test(&foo[..4]), MatchArm::Arm(1));
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assert_eq!(test(&foo[0..1]), MatchArm::Wild);
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}
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