1use core::fmt::Display;
2use std::path::{self, Path, PathBuf};
3
4#[doc(hidden)]
5pub trait AsDisplay<'a>: Sealed {
6 // TODO: convert to generic associated type.
7 // https://github.com/dtolnay/thiserror/pull/253
8 type Target: Display;
9
10 fn as_display(&'a self) -> Self::Target;
11}
12
13impl<'a, T> AsDisplay<'a> for &T
14where
15 T: Display + 'a,
16{
17 type Target = &'a T;
18
19 fn as_display(&'a self) -> Self::Target {
20 *self
21 }
22}
23
24impl<'a> AsDisplay<'a> for Path {
25 type Target = path::Display<'a>;
26
27 #[inline]
28 fn as_display(&'a self) -> Self::Target {
29 self.display()
30 }
31}
32
33impl<'a> AsDisplay<'a> for PathBuf {
34 type Target = path::Display<'a>;
35
36 #[inline]
37 fn as_display(&'a self) -> Self::Target {
38 self.display()
39 }
40}
41
42#[doc(hidden)]
43pub trait Sealed {}
44impl<T: Display> Sealed for &T {}
45impl Sealed for Path {}
46impl Sealed for PathBuf {}
47