| // 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. |
| |
| // aux-build:empty-struct.rs |
| |
| |
| extern crate empty_struct; |
| use empty_struct::XEmpty2 as XFoo; |
| |
| struct Foo; |
| |
| #[derive(PartialEq, Eq)] |
| enum Bar { |
| Var1, |
| Var2, |
| } |
| |
| // Use inherent and trait impls to test UFCS syntax. |
| impl Foo { |
| const MYBAR: Bar = Bar::Var2; |
| } |
| |
| trait HasBar { |
| const THEBAR: Bar; |
| } |
| |
| impl HasBar for Foo { |
| const THEBAR: Bar = Bar::Var1; |
| } |
| |
| impl HasBar for XFoo { |
| const THEBAR: Bar = Bar::Var1; |
| } |
| |
| fn main() { |
| // Inherent impl |
| assert!(match Bar::Var2 { |
| Foo::MYBAR => true, |
| _ => false, |
| }); |
| assert!(match Bar::Var2 { |
| <Foo>::MYBAR => true, |
| _ => false, |
| }); |
| // Trait impl |
| assert!(match Bar::Var1 { |
| Foo::THEBAR => true, |
| _ => false, |
| }); |
| assert!(match Bar::Var1 { |
| <Foo>::THEBAR => true, |
| _ => false, |
| }); |
| assert!(match Bar::Var1 { |
| <Foo as HasBar>::THEBAR => true, |
| _ => false, |
| }); |
| assert!(match Bar::Var1 { |
| XFoo::THEBAR => true, |
| _ => false, |
| }); |
| assert!(match Bar::Var1 { |
| <XFoo>::THEBAR => true, |
| _ => false, |
| }); |
| assert!(match Bar::Var1 { |
| <XFoo as HasBar>::THEBAR => true, |
| _ => false, |
| }); |
| } |