wrap_debug/
lib.rs

1#![feature(core_intrinsics)]
2
3use std::fmt::{Debug, Formatter, Result};
4use std::intrinsics::type_name;
5use std::ops::{Deref, DerefMut};
6
7#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
8pub struct WrapDebug<T>(pub T);
9
10impl<T> WrapDebug<T> {
11    pub fn into_inner(self) -> T {
12        self.0
13    }
14}
15
16impl<T> Deref for WrapDebug<T> {
17    type Target = T;
18    fn deref(&self) -> &T {
19        &self.0
20    }
21}
22
23impl<T> DerefMut for WrapDebug<T> {
24    fn deref_mut(&mut self) -> &mut T {
25        &mut self.0
26    }
27}
28
29impl<T> Debug for WrapDebug<T> {
30    fn fmt(&self, fmt: &mut Formatter) -> Result {
31        fmt.write_str(unsafe { type_name::<T>() })
32    }
33}
34
35#[cfg(test)]
36mod tests {
37    use WrapDebug;
38    #[test]
39    fn test() {
40        let value: String = "asdf".into();
41        assert_eq!(format!("{:?}", WrapDebug(value)), "std::string::String");
42    }
43}
wrap_debug/lib.rs

wrap_debug/
lib.rs
