| // 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. |
| |
| // Test for using an object with an associated type binding as the |
| // instantiation for a generic type with a bound. |
| |
| |
| trait SomeTrait { |
| type SomeType; |
| |
| fn get(&self) -> Self::SomeType; |
| } |
| |
| fn get_int<T:SomeTrait<SomeType=i32>+?Sized>(x: &T) -> i32 { |
| x.get() |
| } |
| |
| impl SomeTrait for i32 { |
| type SomeType = i32; |
| fn get(&self) -> i32 { |
| *self |
| } |
| } |
| |
| fn main() { |
| let x = 22; |
| let x1: &SomeTrait<SomeType=i32> = &x; |
| let y = get_int(x1); |
| assert_eq!(x, y); |
| } |