50 lines
1.6 KiB
Rust
50 lines
1.6 KiB
Rust
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// pretty-expanded FIXME #23616
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enum Enum {
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Foo { foo: usize },
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Bar { bar: usize }
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}
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fn fun1(e1: &Enum, e2: &Enum) -> usize {
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match (e1, e2) {
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(&Enum::Foo { foo: _ }, &Enum::Foo { foo: _ }) => 0,
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(&Enum::Foo { foo: _ }, &Enum::Bar { bar: _ }) => 1,
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(&Enum::Bar { bar: _ }, &Enum::Bar { bar: _ }) => 2,
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(&Enum::Bar { bar: _ }, &Enum::Foo { foo: _ }) => 3,
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}
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}
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fn fun2(e1: &Enum, e2: &Enum) -> usize {
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match (e1, e2) {
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(&Enum::Foo { foo: _ }, &Enum::Foo { foo: _ }) => 0,
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(&Enum::Foo { foo: _ }, _ ) => 1,
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(&Enum::Bar { bar: _ }, &Enum::Bar { bar: _ }) => 2,
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(&Enum::Bar { bar: _ }, _ ) => 3,
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}
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}
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pub fn main() {
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let foo = Enum::Foo { foo: 1 };
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let bar = Enum::Bar { bar: 1 };
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assert_eq!(fun1(&foo, &foo), 0);
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assert_eq!(fun1(&foo, &bar), 1);
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assert_eq!(fun1(&bar, &bar), 2);
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assert_eq!(fun1(&bar, &foo), 3);
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assert_eq!(fun2(&foo, &foo), 0);
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assert_eq!(fun2(&foo, &bar), 1); // fun2 returns 0
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assert_eq!(fun2(&bar, &bar), 2);
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assert_eq!(fun2(&bar, &foo), 3); // fun2 returns 2
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}
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