pub enum OpCode {
    CONSTANT,

    ADD,
    SUB,
    MUL,
    DIV,
    MOD,
    BITAND,
    BITXOR,
    BITOR,
    EQ,
    NE,
    GR,
    GE,
    LS,
    LE,
    OR,
    AND,

    NOT,
    NEG,
    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,
            BITAND => 0x06,
            BITXOR => 0x07,
            BITOR => 0x08,
            EQ => 0x09,
            NE => 0x0A,
            GR => 0x0B,
            GE => 0x0C,
            LS => 0x0D,
            LE => 0x0E,
            OR => 0x0F,
            AND => 0x10,

            NOT => 0x11,
            NEG => 0x12,
            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 => BITAND,
            0x07 => BITXOR,
            0x08 => BITOR,
            0x09 => EQ,
            0x0A => NE,
            0x0B => GR,
            0x0C => GE,
            0x0D => LS,
            0x0E => LE,
            0x0F => OR,
            0x10 => AND,

            0x11 => NOT,
            0x12 => NEG,
            0x13 => PRINT,
            _ => ERR
        }
    }
}