summaryrefslogtreecommitdiffstats
path: root/tests/ui/associated-consts/associated-const-match-patterns.rs
blob: 62c1cb983d1b4d37adf79bab7f671dbbbd44f566 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
// run-pass
// 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,
    });
}