pub enum OpCode {
    CONSTANT,
    ADD,
    SUB,
    MUL,
    DIV,
    MOD,
    PRINT,
    ERR,
}

impl From<OpCode> for u8 {
    fn from(value: OpCode) -> Self {
        use OpCode::*;
        match value {
            CONSTANT => 0x00,
            ADD => 0x01,
            SUB => 0x02,
            MUL => 0x03,
            DIV => 0x04,
            MOD => 0x05,
            PRINT => 0xFE,
            ERR => 0xFF
        }
    }
}
impl From<u8> for OpCode {
    fn from(value: u8) -> Self {
        use OpCode::*;
        match value {
            0x00 => CONSTANT,
            0x01 => ADD,
            0x02 => SUB,
            0x03 => MUL,
            0x04 => DIV,
            0x05 => MOD,
            0xFE => PRINT,
            _ => ERR
        }
    }
}