pub enum OpCode {
    CONSTANT,
    ADD,
    SUB,
    MUL,
    DIV,
    MOD,
    EQ,
    NE,
    GR,
    GE,
    LS,
    LE,
    OR,
    AND,
    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,
            EQ => 0x06,
            NE => 0x07,
            GR => 0x08,
            GE => 0x09,
            LS => 0x0A,
            LE => 0x0B,
            OR => 0x0C,
            AND => 0x0D,
            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,
            0x06 => EQ,
            0x07 => NE,
            0x08 => GR,
            0x09 => GE,
            0x0A => LS,
            0x0B => LE,
            0x0C => OR,
            0x0D => AND,
            0xFE => PRINT,
            _ => ERR
        }
    }
}