ec4rs 1.2.0

EditorConfig For Rust
Documentation 
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/// Possible errors that can occur while parsing EditorConfig data.
#[derive(Debug)]
pub enum ParseError {
    /// End-of-file was reached.
    Eof,
    /// An IO read failure occurred.
    Io(std::io::Error),
    /// An invalid line was read.
    InvalidLine,
    /// An empty character class was found in a section header.
    EmptyCharClass,
}

impl std::fmt::Display for ParseError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            ParseError::Eof => write!(f, "end of data"),
            ParseError::Io(e) => write!(f, "io failure: {}", e),
            ParseError::InvalidLine => write!(f, "invalid line"),
            ParseError::EmptyCharClass => write!(f, "empty char class"),
        }
    }
}

impl std::error::Error for ParseError {
    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
        if let ParseError::Io(ioe) = self {
            Some(ioe)
        } else {
            None
        }
    }
}

/// All errors that can occur during operation.
#[derive(Debug)]
pub enum Error {
    /// An error occured durign parsing.
    Parse(ParseError),
    /// An error occured during parsing of a file.
    InFile(std::path::PathBuf, usize, ParseError),
    /// The current working directory is invalid (e.g. does not exist).
    InvalidCwd(std::io::Error),
}

impl std::fmt::Display for Error {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Error::Parse(error) => write!(f, "{}", error),
            Error::InFile(path, line, error) => {
                write!(f, "{}:{}: {}", path.to_string_lossy(), line, error)
            }
            Error::InvalidCwd(ioe) => write!(f, "invalid cwd: {}", ioe),
        }
    }
}

impl std::error::Error for Error {
    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
        match self {
            Error::Parse(pe) | Error::InFile(_, _, pe) => pe.source(),
            Error::InvalidCwd(ioe) => Some(ioe),
        }
    }
}