/*
 * File:   MOperand.h
 * Author: rick
 *
 * Created on November 19, 2008, 1:17 AM
 */

#ifndef _MOPERAND_H
#define	_MOPERAND_H

#include <cstdio>
#include "IOperand.h"
#include "globals.h"
#include <string>

#define NO_OFFSET INT_MIN

using namespace std;

// The type of an operand
typedef enum __moperandtype {
    MT_UNKNOWN,               // Unknown (yet)
    MT_INT,                   // Integer immediate
    MT_REAL,                  // Real immediate
    MT_LABEL,                 // Label name e.k.a. string
    MT_REGISTER,              // Integer Register
    MT_ADDRESS,               // Address operand
    MT_OFFSET                 // Register + offset address
} MOperandType;

/* Do not use virtuals, just one mapping will do */
class MOperand {
   public:
    // Constructor/destructor
    MOperand(MOperandType mtype, int value);
    MOperand(MOperandType mtype, float value);
    MOperand(MOperandType mtype, MRegisterType value);
    MOperand(MOperandType mtype, string newLabel);
    MOperand(MOperandType mtype, MRegisterType reg, int offset);
    ~MOperand();


    // Set operand type handling
    void SetOperandType(MOperandType type);
    MOperandType GetOperandType() const;


    // constant value based
    int GetIntValue() const;
    void SetIntValue(int value);
    float GetRealValue() const;
    void SetRealValue(float value);

    // register entries
    void SetRegisterNumber(int value);
    int GetRegisterNumber() const;
    void SetRegisterType(MRegisterType value);
    MRegisterType GetRegisterType() const;


    void SetOffset(int value);
    int GetOffset() const;

    void SetAddress(int value);
    void SetAddress(MRegisterType value);

    int GetAddress() const;

    void SetLabel(string newLabel);
    string GetLabel() const;

    // Dump
    void Dump(FILE *file);

  private:
    int iValue;
    float rValue;
    int registerNumber;
    string label;
    int offset;
    int address;
    MOperandType mType;
 };

#endif	/* _MOPERAND_H */