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use std::error::Error;
use std::fmt;

#[derive(Debug, Clone)]
pub enum LexerError {
    InternalError,
    UnexpectedCharakter,
}

impl fmt::Display for LexerError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "{}", self.description())
    }
}

impl Error for LexerError {
    fn description(&self) -> &str {
        match *self {
            LexerError::InternalError => "An internal error was found during the lexer phase. please report this error to TODO(romankl) github url",
            LexerError::UnexpectedCharakter => "An unexpected charater was found. fix this error to pass the lexer phase"
        }
    }
}