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//! Error converting a [`Parsed`](crate::parsing::Parsed) struct to another type
use core::fmt;
use crate::error;
/// An error that occurred when converting a [`Parsed`](crate::parsing::Parsed) to another type.
#[non_exhaustive]
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum TryFromParsed {
/// The [`Parsed`](crate::parsing::Parsed) did not include enough information to construct the
/// type.
InsufficientInformation,
/// Some component contained an invalid value for the type.
ComponentRange(error::ComponentRange),
}
impl fmt::Display for TryFromParsed {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Self::InsufficientInformation => f.write_str(
"the `Parsed` struct did not include enough information to construct the type",
),
Self::ComponentRange(err) => err.fmt(f),
}
}
}
impl From<error::ComponentRange> for TryFromParsed {
fn from(v: error::ComponentRange) -> Self {
Self::ComponentRange(v)
}
}
impl TryFrom<TryFromParsed> for error::ComponentRange {
type Error = error::DifferentVariant;
fn try_from(err: TryFromParsed) -> Result<Self, Self::Error> {
match err {
TryFromParsed::ComponentRange(err) => Ok(err),
_ => Err(error::DifferentVariant),
}
}
}
#[cfg(feature = "std")]
impl std::error::Error for TryFromParsed {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
match self {
Self::InsufficientInformation => None,
Self::ComponentRange(err) => Some(err),
}
}
}
impl From<TryFromParsed> for crate::Error {
fn from(original: TryFromParsed) -> Self {
Self::TryFromParsed(original)
}
}
impl TryFrom<crate::Error> for TryFromParsed {
type Error = error::DifferentVariant;
fn try_from(err: crate::Error) -> Result<Self, Self::Error> {
match err {
crate::Error::TryFromParsed(err) => Ok(err),
_ => Err(error::DifferentVariant),
}
}
}