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//! Different variant error
use core::fmt;
/// An error type indicating that a [`TryFrom`](core::convert::TryFrom) call failed because the
/// original value was of a different variant.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct DifferentVariant;
impl fmt::Display for DifferentVariant {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "value was of a different variant than required")
}
}
#[cfg(feature = "std")]
impl std::error::Error for DifferentVariant {}
impl From<DifferentVariant> for crate::Error {
fn from(err: DifferentVariant) -> Self {
Self::DifferentVariant(err)
}
}
impl TryFrom<crate::Error> for DifferentVariant {
type Error = Self;
fn try_from(err: crate::Error) -> Result<Self, Self::Error> {
match err {
crate::Error::DifferentVariant(err) => Ok(err),
_ => Err(Self),
}
}
}