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// 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,
});
}
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