33 lines
755 B
Rust
33 lines
755 B
Rust
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// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution.
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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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#![allow(dead_code)]
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enum Foo {
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A,
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B,
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C,
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}
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macro_rules! test_hash {
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($foo:expr, $($t:ident => $ord:expr),+ ) => {
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use self::Foo::*;
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match $foo {
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$ ( & $t => $ord,
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)*
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};
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};
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}
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fn main() {
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let a = Foo::A;
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test_hash!(&a, A => 0, B => 1, C => 2);
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}
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