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53 lines
1.8 KiB
Rust
53 lines
1.8 KiB
Rust
// Test basic or-patterns when the target pattern type will be lowered to
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// a `SwitchInt`. This will happen when the target type is an integer.
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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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#[derive(Debug)]
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enum Foo {
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One(usize),
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Two(usize, usize),
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}
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fn test_foo(x: Foo) -> MatchArm {
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match x {
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// normal pattern.
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Foo::One(0) | Foo::One(1) | Foo::One(2) => MatchArm::Arm(0),
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// most simple or-pattern.
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Foo::One(42 | 255) => MatchArm::Arm(1),
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// multiple or-patterns for one structure.
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Foo::Two(42 | 255, 1024 | 2048) => MatchArm::Arm(2),
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// mix of pattern types in one or-pattern (range).
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Foo::One(100 | 110..=120 | 210..=220) => MatchArm::Arm(3),
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// multiple or-patterns with wild.
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Foo::Two(0..=10 | 100..=110, 0 | _) => MatchArm::Arm(4),
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// wild
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_ => MatchArm::Wild,
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}
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}
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fn main() {
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// `Foo` tests.
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assert_eq!(test_foo(Foo::One(0)), MatchArm::Arm(0));
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assert_eq!(test_foo(Foo::One(42)), MatchArm::Arm(1));
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assert_eq!(test_foo(Foo::One(43)), MatchArm::Wild);
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assert_eq!(test_foo(Foo::One(255)), MatchArm::Arm(1));
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assert_eq!(test_foo(Foo::One(256)), MatchArm::Wild);
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assert_eq!(test_foo(Foo::Two(42, 1023)), MatchArm::Wild);
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assert_eq!(test_foo(Foo::Two(255, 2048)), MatchArm::Arm(2));
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assert_eq!(test_foo(Foo::One(100)), MatchArm::Arm(3));
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assert_eq!(test_foo(Foo::One(115)), MatchArm::Arm(3));
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assert_eq!(test_foo(Foo::One(105)), MatchArm::Wild);
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assert_eq!(test_foo(Foo::One(215)), MatchArm::Arm(3));
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assert_eq!(test_foo(Foo::One(121)), MatchArm::Wild);
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assert_eq!(test_foo(Foo::Two(0, 42)), MatchArm::Arm(4));
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assert_eq!(test_foo(Foo::Two(100, 0)), MatchArm::Arm(4));
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assert_eq!(test_foo(Foo::Two(42, 0)), MatchArm::Wild);
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}
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