6665758614
This allows some lookup of trait-associated consts during type-checking, which may be helpful for future fixes as well.
36 lines
896 B
Rust
36 lines
896 B
Rust
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![feature(associated_consts)]
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struct Foo;
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trait HasNum {
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const NUM: isize;
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}
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impl HasNum for Foo {
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const NUM: isize = 1;
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}
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fn main() {
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assert!(match 2 {
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Foo::NUM ... 3 => true,
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_ => false,
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});
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assert!(match 0 {
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-1 ... <Foo as HasNum>::NUM => true,
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_ => false,
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});
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assert!(match 1 {
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<Foo as HasNum>::NUM ... <Foo>::NUM => true,
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_ => false,
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});
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}
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