time/error/invalid_variant.rs
1//! Invalid variant error
2
3use core::fmt;
4
5/// An error type indicating that a [`FromStr`](core::str::FromStr) call failed because the value
6/// was not a valid variant.
7#[derive(Debug, Clone, Copy, PartialEq, Eq)]
8pub struct InvalidVariant;
9
10impl fmt::Display for InvalidVariant {
11 #[inline]
12 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
13 write!(f, "value was not a valid variant")
14 }
15}
16
17impl core::error::Error for InvalidVariant {}
18
19impl From<InvalidVariant> for crate::Error {
20 #[inline]
21 fn from(err: InvalidVariant) -> Self {
22 Self::InvalidVariant(err)
23 }
24}
25
26impl TryFrom<crate::Error> for InvalidVariant {
27 type Error = crate::error::DifferentVariant;
28
29 #[inline]
30 fn try_from(err: crate::Error) -> Result<Self, Self::Error> {
31 match err {
32 crate::Error::InvalidVariant(err) => Ok(err),
33 _ => Err(crate::error::DifferentVariant),
34 }
35 }
36}