use thiserror::Error;

use super::CodePos;

#[derive(Error, Debug)]
pub enum LexerError {
    #[error("Unexpected character '{c}' at {code_pos}.")]
    UnexpectedCharacter { c: char, code_pos: CodePos },
    #[error("Unterminated string literal starting at {code_pos}.")]
    UnterminatedStringLiteral { code_pos: CodePos },
    #[error("Unterminated block comment starting at {code_pos}.")]
    UnterminatedBlockComment { code_pos: CodePos },
    #[error("Invalid number literal {lexeme} at {code_pos}: {msg}")]
    InvalidNumberLiteral {
        lexeme: String,
        msg: String,
        code_pos: CodePos,
    },
}