use std::fmt;
/// An error that occurred during parsing changelog or configuring the parser.
#[derive(Debug)]
#[non_exhaustive]
pub enum Error {
/// The specified format is not a valid regular expression or supported by
/// [regex] crate.
///
/// This error only occurs during configuring the parser.
///
/// [regex]: https://docs.rs/regex
Regex(regex::Error),
/// The specified format is a valid regular expression but not a format
/// that accepted by the parser.
///
/// This error only occurs during configuring the parser.
Format(String),
/// An error that occurred during parsing changelog.
Parse(String),
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Error::Regex(e) => fmt::Display::fmt(e, f),
Error::Format(e) => f.write_str(e),
Error::Parse(e) => f.write_str(e),
}
}
}
impl std::error::Error for Error {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
match self {
Error::Regex(e) => Some(e),
_ => None,
}
}
}
impl From<regex::Error> for Error {
fn from(e: regex::Error) -> Self {
Error::Regex(e)
}
}