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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
trait Foo { fn f(&self) -> int; }
trait Bar : Foo { fn g(&self) -> int; }
trait Baz : Bar { fn h(&self) -> int; }
struct A { x: int }
impl Foo for A { fn f(&self) -> int { 10 } }
impl Bar for A { fn g(&self) -> int { 20 } }
impl Baz for A { fn h(&self) -> int { 30 } }
// Call a function on Foo, given a T: Baz,
// which is inherited via Bar
fn gg<T:Baz>(a: &T) -> int {
a.f()
}
pub fn main() {
let a = &A { x: 3 };
assert!(gg(a) == 10);
}
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