| // 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. |
| |
| #![feature(associated_consts)] |
| |
| struct Foo; |
| |
| trait HasNum { |
| const NUM: isize; |
| } |
| impl HasNum for Foo { |
| const NUM: isize = 1; |
| } |
| |
| fn main() { |
| assert!(match 2 { |
| Foo::NUM ... 3 => true, |
| _ => false, |
| }); |
| assert!(match 0 { |
| -1 ... <Foo as HasNum>::NUM => true, |
| _ => false, |
| }); |
| assert!(match 1 { |
| <Foo as HasNum>::NUM ... <Foo>::NUM => true, |
| _ => false, |
| }); |
| } |