cgp-tests 0.6.0-beta

Context-generic programming meta crate
Documentation 
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

use cgp::prelude::*;

#[cgp_type]
pub trait HasFooType {
    type Foo;
}

#[cgp_type]
pub trait HasBarType {
    type Bar;
}

#[cgp_getter]
pub trait HasFooBar: HasFooType + HasBarType {
    fn foo_bar(foo: &Self::Foo) -> &Self::Bar;
}

#[cgp_context]
pub struct App;

#[derive(HasField)]
pub struct Foo {
    pub bar: u32,
}

delegate_components! {
    AppComponents {
        FooTypeProviderComponent:
            UseType<Foo>,
        BarTypeProviderComponent:
            UseType<u32>,
        FooBarGetterComponent:
            UseField<Symbol!("bar")>,
    }
}

#[test]
fn test_non_self_getter() {
    let foo = Foo { bar: 42 };

    let bar = App::foo_bar(&foo);
    assert_eq!(bar, &42);
}