#ifndef OPCODES_H
#define OPCODES_H

#include <string.h>
#include "symbols_table.h"

typedef enum {
    R1, R2, R3, R4, R5, R6, R7, R8
} Registers;

typedef enum {
    ADD, SUB, JZ, INT, YLD, RET,
    CMP, NOP, JMP, CALL, LOAD, JE, INC, DEC, LOADB
} Mnemonic;

typedef enum {
    NoParameter,
    ConstantParameter,
    AddressParameter,
    RegisterParameter
} OpcodeParameter;

typedef struct {
    Mnemonic Mnemonic;
    OpcodeParameter ParameterOneType;
    OpcodeParameter ParameterTwoType;

    union {
        int Constant;
        Symbol* Symbol;
    } ParameterOne;

    union {
        int Constant;
        Symbol* Symbol;
    } ParameterTwo;
} Instruction;

//extern Instruction instructions[OPCODECOUNT];

Instruction* CreateInstruction(Mnemonic mnemonic);
void FreeInstruction(Instruction* instruction);
int IsOpcode(const char*, Mnemonic*);
int IsRegister(const char*, Registers*);
void GetMnemonicText(Mnemonic mnemonic, char buffer[12]);
//const Instruction* GetOpcodeDetails(Mnemonic);
unsigned char GetInstructionMask(Mnemonic type);

#endif