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//! Invalid variant error
use core::fmt;
/// An error type indicating that a [`FromStr`](core::str::FromStr) call failed because the value
/// was not a valid variant.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct InvalidVariant;
impl fmt::Display for InvalidVariant {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "value was not a valid variant")
}
}
#[cfg(feature = "std")]
impl std::error::Error for InvalidVariant {}
impl From<InvalidVariant> for crate::Error {
fn from(err: InvalidVariant) -> Self {
Self::InvalidVariant(err)
}
}
impl TryFrom<crate::Error> for InvalidVariant {
type Error = crate::error::DifferentVariant;
fn try_from(err: crate::Error) -> Result<Self, Self::Error> {
match err {
crate::Error::InvalidVariant(err) => Ok(err),
_ => Err(crate::error::DifferentVariant),
}
}
}