mirror of https://github.com/rust-lang/rust
44 lines
988 B
Rust
44 lines
988 B
Rust
// Test bindings-after-at with or-patterns and box-patterns
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//@ run-pass
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#![feature(box_patterns)]
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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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#[derive(Debug, PartialEq)]
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enum Test {
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Foo,
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Bar,
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Baz,
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Qux,
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}
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fn test(foo: Option<Box<Test>>) -> MatchArm {
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match foo {
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ref bar @ Some(box Test::Foo | box Test::Bar) => {
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assert_eq!(bar, &foo);
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MatchArm::Arm(0)
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},
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Some(ref bar @ box Test::Baz | ref bar @ box Test::Qux) => {
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assert!(**bar == Test::Baz || **bar == Test::Qux);
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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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assert_eq!(test(Some(Box::new(Test::Foo))), MatchArm::Arm(0));
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assert_eq!(test(Some(Box::new(Test::Bar))), MatchArm::Arm(0));
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assert_eq!(test(Some(Box::new(Test::Baz))), MatchArm::Arm(1));
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assert_eq!(test(Some(Box::new(Test::Qux))), MatchArm::Arm(1));
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assert_eq!(test(None), MatchArm::Wild);
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}
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