1 | //! An uninhabitable type meaning it can never happen. |
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2 | //! |
3 | //! To be replaced with `!` once it is stable. |
4 | |
5 | use std::error::Error; |
6 | use std::fmt; |
7 | |
8 | #[derive(Debug)] |
9 | pub(crate) enum Never {} |
10 | |
11 | impl fmt::Display for Never { |
12 | fn fmt(&self, _: &mut fmt::Formatter<'_>) -> fmt::Result { |
13 | match *self {} |
14 | } |
15 | } |
16 | |
17 | impl Error for Never { |
18 | fn description(&self) -> &str { |
19 | match *self {} |
20 | } |
21 | } |
22 |