37 lines
793 B
Rust
37 lines
793 B
Rust
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// Test or-patterns with 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)]
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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(x: Option<Box<Test>>) -> MatchArm {
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match x {
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Some(box Test::Foo | box Test::Bar) => MatchArm::Arm(0),
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Some(box Test::Baz) => MatchArm::Arm(1),
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Some(_) => MatchArm::Arm(2),
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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(2));
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assert_eq!(test(None), MatchArm::Wild);
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}
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