File: struct-path-associated-type.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, sid, trixie
  • size: 893,396 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,051; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (37 lines) | stat: -rw-r--r-- 937 bytes parent folder | download | duplicates (8)
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
struct S;

trait Tr {
    type A;
}

impl Tr for S {
    type A = S;
}

fn f<T: Tr>() {
    let s = T::A {};
    //~^ ERROR expected struct, variant or union type, found associated type
    let z = T::A::<u8> {};
    //~^ ERROR expected struct, variant or union type, found associated type
    //~| ERROR associated type takes 0 generic arguments but 1 generic argument was supplied
    match S {
        T::A {} => {}
        //~^ ERROR expected struct, variant or union type, found associated type
    }
}

fn g<T: Tr<A = S>>() {
    let s = T::A {}; // OK
    let z = T::A::<u8> {}; //~ ERROR associated type takes 0 generic arguments but 1 generic argument was supplied
    match S {
        T::A {} => {} // OK
    }
}

fn main() {
    let s = S::A {}; //~ ERROR ambiguous associated type
    let z = S::A::<u8> {}; //~ ERROR ambiguous associated type
    match S {
        S::A {} => {} //~ ERROR ambiguous associated type
    }
}