pub const CONST: u8 = 0x0;
pub const LOAD_G: u8 = 0x1;
pub const STORE_G: u8 = 0x2;
pub const LOAD_L: u8 = 0x3;
pub const STORE_L: u8 = 0x4;
pub const LOAD_A: u8 = 0x5;
pub const STORE_A: u8 = 0x6;
pub const JMP: u8 = 0x7;
pub const BRF: u8 = 0x8;
pub const BRT: u8 = 0x9;
pub const CALL: u8 = 0xA;
pub const CALL_B: u8 = 0xB;
pub const RET: u8 = 0xC;
pub const LOAD_R: u8 = 0xD;
pub const STORE_R: u8 = 0xE;
pub const ASF: u8 = 0xF;
pub const RSF: u8 = 0x10;
pub const POP: u8 = 0x11;
pub const ADD: u8 = 0x12;
pub const SUB: u8 = 0x13;
pub const MUL: u8 = 0x14;
pub const DIV: u8 = 0x15;
pub const MOD: u8 = 0x16;
pub const EQ: u8 = 0x17;
pub const NE: u8 = 0x18;
pub const LT: u8 = 0x19;
pub const LE: u8 = 0x1A;
pub const GT: u8 = 0x1B;
pub const GE: u8 = 0x1C;
pub const NOT: u8 = 0x1D;
pub const NEG: u8 = 0x1E;
pub const HALT: u8 = 0x1F;
pub const ARRAY: u8 = 0x20;

pub fn opcode_to_string(opcode: u8) -> String {
    match opcode {
        CONST => "CONST".to_string(),
        LOAD_G => "LOAD_G".to_string(),
        STORE_G => "STORE_G".to_string(),
        LOAD_L => "LOAD_L".to_string(),
        STORE_L => "STORE_L".to_string(),
        LOAD_A => "LOAD_A".to_string(),
        STORE_A => "STORE_A".to_string(),
        JMP => "JMP".to_string(),
        BRF => "BRF".to_string(),
        BRT => "BRT".to_string(),
        CALL => "CALL".to_string(),
        CALL_B => "CALL_B".to_string(),
        RET => "RET".to_string(),
        LOAD_R => "LOAD_R".to_string(),
        STORE_R => "STORE_R".to_string(),
        ASF => "ASF".to_string(),
        RSF => "RSF".to_string(),
        POP => "POP".to_string(),
        ADD => "ADD".to_string(),
        SUB => "SUB".to_string(),
        MUL => "MUL".to_string(),
        DIV => "DIV".to_string(),
        MOD => "MOD".to_string(),
        EQ => "EQ".to_string(),
        NE => "NE".to_string(),
        LT => "LT".to_string(),
        LE => "LE".to_string(),
        GT => "GT".to_string(),
        GE => "GE".to_string(),
        NOT => "NOT".to_string(),
        NEG => "NEG".to_string(),
        HALT => "HALT".to_string(),
        ARRAY => "ARRAY".to_string(),
        _ => "UNKNOWN".to_string(),
    }
}