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
|
// run-pass
#![allow(dead_code)]
use std::fmt;
#[derive(Debug)]
enum A {}
#[derive(Debug)]
enum B { B1, B2, B3 }
#[derive(Debug)]
enum C { C1(isize), C2(B), C3(String) }
#[derive(Debug)]
enum D { D1{ a: isize } }
#[derive(Debug)]
struct E;
#[derive(Debug)]
struct F(isize);
#[derive(Debug)]
struct G(isize, isize);
#[derive(Debug)]
struct H { a: isize }
#[derive(Debug)]
struct I { a: isize, b: isize }
#[derive(Debug)]
struct J(Custom);
struct Custom;
impl fmt::Debug for Custom {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "yay")
}
}
trait ToDebug {
fn to_show(&self) -> String;
}
impl<T: fmt::Debug> ToDebug for T {
fn to_show(&self) -> String {
format!("{:?}", self)
}
}
pub fn main() {
assert_eq!(B::B1.to_show(), "B1".to_string());
assert_eq!(B::B2.to_show(), "B2".to_string());
assert_eq!(C::C1(3).to_show(), "C1(3)".to_string());
assert_eq!(C::C2(B::B2).to_show(), "C2(B2)".to_string());
assert_eq!(D::D1{ a: 2 }.to_show(), "D1 { a: 2 }".to_string());
assert_eq!(E.to_show(), "E".to_string());
assert_eq!(F(3).to_show(), "F(3)".to_string());
assert_eq!(G(3, 4).to_show(), "G(3, 4)".to_string());
assert_eq!(I{ a: 2, b: 4 }.to_show(), "I { a: 2, b: 4 }".to_string());
assert_eq!(J(Custom).to_show(), "J(yay)".to_string());
}
|
