39 lines
913 B
Rust
39 lines
913 B
Rust
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// Copyright 2017 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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#![feature(decl_macro)]
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mod foo {
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struct S { x: u32 }
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struct T(u32);
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pub macro m($S:ident, $x:ident) {{
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struct $S {
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$x: u32,
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x: i32,
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}
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let s = S { x: 0 };
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let _ = s.x;
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let t = T(0);
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let _ = t.0;
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let s = $S { $x: 0, x: 1 };
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assert_eq!((s.$x, s.x), (0, 1));
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s
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}}
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}
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fn main() {
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let s = foo::m!(S, x);
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assert_eq!(s.x, 0);
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}
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