33 lines
999 B
Rust
33 lines
999 B
Rust
// 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 A { fn a(&self) -> int; }
|
|
trait B: A { fn b(&self) -> int; }
|
|
trait C: A { fn c(&self) -> int; }
|
|
|
|
struct S { bogus: () }
|
|
|
|
impl S: A { fn a(&self) -> int { 10 } }
|
|
impl S: B { fn b(&self) -> int { 20 } }
|
|
impl S: C { fn c(&self) -> int { 30 } }
|
|
|
|
// Multiple type params, multiple levels of inheritance
|
|
fn f<X: A, Y: B, Z: C>(x: &X, y: &Y, z: &Z) {
|
|
assert x.a() == 10;
|
|
assert y.a() == 10;
|
|
assert y.b() == 20;
|
|
assert z.a() == 10;
|
|
assert z.c() == 30;
|
|
}
|
|
|
|
fn main() {
|
|
let s = &S { bogus: () };
|
|
f(s, s, s);
|
|
} |