38 lines
1000 B
Rust
38 lines
1000 B
Rust
// Copyright 2012 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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// Testing that this impl turns A into a Quux, because
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// A is already a Foo Bar Baz
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impl<T: Foo Bar Baz> Quux for T { }
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trait Foo { fn f() -> int; }
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trait Bar { fn g() -> int; }
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trait Baz { fn h() -> int; }
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trait Quux: Foo Bar Baz { }
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struct A { x: int }
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impl Foo for A { fn f() -> int { 10 } }
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impl Bar for A { fn g() -> int { 20 } }
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impl Baz for A { fn h() -> int { 30 } }
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fn f<T: Quux>(a: &T) {
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assert a.f() == 10;
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assert a.g() == 20;
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assert a.h() == 30;
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}
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pub fn main() {
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let a = &A { x: 3 };
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f(a);
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}
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