56 lines
1.7 KiB
Rust
56 lines
1.7 KiB
Rust
//! Error parsing an input into a [`Parsed`](crate::parsing::Parsed) struct
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use core::fmt;
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use crate::error;
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/// An error that occurred while parsing the input into a [`Parsed`](crate::parsing::Parsed) struct.
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#[non_exhaustive]
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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pub enum ParseFromDescription {
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/// A string literal was not what was expected.
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#[non_exhaustive]
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InvalidLiteral,
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/// A dynamic component was not valid.
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InvalidComponent(&'static str),
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/// The input was expected to have ended, but there are characters that remain.
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#[non_exhaustive]
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UnexpectedTrailingCharacters,
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}
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impl fmt::Display for ParseFromDescription {
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#[inline]
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match self {
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Self::InvalidLiteral => f.write_str("a character literal was not valid"),
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Self::InvalidComponent(name) => {
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write!(f, "the '{name}' component could not be parsed")
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}
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Self::UnexpectedTrailingCharacters => {
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f.write_str("unexpected trailing characters; the end of input was expected")
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}
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}
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}
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}
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impl core::error::Error for ParseFromDescription {}
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impl From<ParseFromDescription> for crate::Error {
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#[inline]
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fn from(original: ParseFromDescription) -> Self {
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Self::ParseFromDescription(original)
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}
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}
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impl TryFrom<crate::Error> for ParseFromDescription {
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type Error = error::DifferentVariant;
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#[inline]
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fn try_from(err: crate::Error) -> Result<Self, Self::Error> {
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match err {
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crate::Error::ParseFromDescription(err) => Ok(err),
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_ => Err(error::DifferentVariant),
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}
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}
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}
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