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crates/pcre2/src/error.rs
48 строк
1 KB
Andrew Gallant
pcre2: small polishing
10 окт 2023, 03:29
10 окт 2023, 03:29
798f898
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/// An error that can occur in this crate. /// /// Generally, this error corresponds to problems building a regular /// expression, whether it's in parsing, compilation or a problem with /// guaranteeing a configured optimization. #[derive(Clone, Debug)] pub struct Error { kind: ErrorKind, } impl Error { pub(crate) fn regex<E: std::error::Error>(err: E) -> Error { Error { kind: ErrorKind::Regex(err.to_string()) } } /// Return the kind of this error. pub fn kind(&self) -> &ErrorKind { &self.kind } } /// The kind of an error that can occur. #[derive(Clone, Debug)] #[non_exhaustive] pub enum ErrorKind { /// An error that occurred as a result of parsing a regular expression. /// This can be a syntax error or an error that results from attempting to /// compile a regular expression that is too big. /// /// The string here is the underlying error converted to a string. Regex(String), } impl std::error::Error for Error { fn description(&self) -> &str { match self.kind { ErrorKind::Regex(_) => "regex error", } } } impl std::fmt::Display for Error { fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { match self.kind { ErrorKind::Regex(ref s) => write!(f, "{}", s), } } }