File: const-fn-type-name.rs

package info (click to toggle)
rustc 1.88.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 934,128 kB
  • sloc: xml: 158,127; python: 36,062; javascript: 19,855; sh: 19,700; cpp: 18,947; ansic: 12,993; asm: 4,792; makefile: 690; lisp: 29; perl: 29; ruby: 19; sql: 11
file content (37 lines) | stat: -rw-r--r-- 737 bytes parent folder | download | duplicates (13)
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
//@ run-pass

#![feature(core_intrinsics)]
#![feature(const_type_name)]
#![allow(dead_code)]

const fn type_name_wrapper<T>(_: &T) -> &'static str {
    core::intrinsics::type_name::<T>()
}

struct Struct<TA, TB, TC> {
    a: TA,
    b: TB,
    c: TC,
}

type StructInstantiation = Struct<i8, f64, bool>;

const CONST_STRUCT: StructInstantiation = StructInstantiation {
    a: 12,
    b: 13.7,
    c: false,
};

const CONST_STRUCT_NAME: &'static str = type_name_wrapper(&CONST_STRUCT);

fn main() {
    let non_const_struct = StructInstantiation {
        a: 87,
        b: 65.99,
        c: true,
    };

    let non_const_struct_name = type_name_wrapper(&non_const_struct);

    assert_eq!(CONST_STRUCT_NAME, non_const_struct_name);
}