blob: 440b8d748a4ab60afa0ba4f5d7e4de73803534a1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
// Copyright 2015 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.
// run-pass
// Tests that we can combine a default impl that supplies one method with a
// full impl that supplies the other, and they can invoke one another.
#![feature(specialization)]
trait Foo {
fn foo_one(&self) -> &'static str;
fn foo_two(&self) -> &'static str;
fn foo_three(&self) -> &'static str;
}
struct MyStruct;
default impl<T> Foo for T {
fn foo_one(&self) -> &'static str {
self.foo_three()
}
}
impl Foo for MyStruct {
fn foo_two(&self) -> &'static str {
self.foo_one()
}
fn foo_three(&self) -> &'static str {
"generic"
}
}
fn main() {
assert!(MyStruct.foo_two() == "generic");
}
|
