enum Mode: u8 {
    lex,
    parse,
    done,
}

export c fn main() -> u8 {
    let mode: Mode = Mode.parse
    match mode {
        lex {
            return 1_u8
        }
        parse {
            return 2_u8
        }
        done {
            return 3_u8
        }
    }
    return 0_u8
}