#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>
#include <cstring>
#include "Org_MIPS.h"

using namespace std;

int main()
{
	string registers[ MAXREG ]; 
	string memory[ MAXMEM ];
	string binInstruction, hexInstruction, opCode, inFileName;
	ifstream inFile;
	ofstream outFile;
	int PC = 0;
	
	for ( int i = 0; i < MAXMEM; i++ )
		memory[ i ] = "00000000";
	
	for ( int i = 0; i < MAXREG; i++ )
		registers[ i ] = "00000000000000000000000000000000";

	cout << "Please enter the name of the file that contains the Hexadecimal Instructions:" << endl;
	cin >> inFileName;
	cout << endl;
	
	inFile.open( inFileName.c_str() );
	outFile.open( "Output.txt" );

	while ( !inFile.eof() )
	{
		cout << "We are executiing!!!" << endl << endl;
		inFile >> hexInstruction;
        cout << "Hex: " << hexInstruction << endl;
		outFile << "PC: " << PC << endl; 
		PC++;
		
		binInstruction = HexToBin( hexInstruction );
		cout << binInstruction << endl << endl;
		opCode = binInstruction.substr( 0,6 );

		if ( opCode == "000000" )
			RtypeInstruct( PC, opCode, binInstruction, registers, memory, outFile );
		else if ( opCode == "000010" )
			JtypeInstruct( PC, opCode, binInstruction, registers, memory, outFile );
		else
			ItypeInstruct( PC, opCode, binInstruction, registers, memory, outFile );
				
		outFile << "MEMORY" << endl;
		for ( int i = 0; i < MAXMEM; i++ )
		{
			if ( i <= 9 )
			{
				outFile << left << i << ".   "  << setfill( ' ' ) << setw( 32 )
				<< memory[ i ] << "  DecVal: " << BinToDec( memory[ i ] ) << endl;
			}
			else if ( i >= 10 && i <= 99 )
			{
				outFile << left << i << ".  "  << setfill( ' ' ) << setw( 32 )
				<< memory[ i ] << "  DecVal: " << BinToDec( memory[ i ] ) << endl;
			}
			else
			{
				outFile << left << i << ". "  << setfill( ' ' ) << setw( 32 )
				<< memory[ i ] << "  DecVal: " << BinToDec( memory[ i ] ) << endl;
			}
		}
		
		outFile << endl << "REGISTERS" << endl;
		for ( int i = 0; i < MAXREG; i++ )
		{
			if ( i <= 9 )
			{
				outFile << left << i << ".  " << setfill( ' ' ) << setw( 32 ) 
				<< registers[ i ] << "  DecVal: " << BinToDec( registers[ i ] ) << endl;
			}
			else
			{
				outFile << left << i << ". " << setfill( ' ' ) << setw( 32 ) 
				<< registers[ i ] << "  DecVal: " << BinToDec( registers[ i ] ) << endl;
			}
		}

		outFile << endl << "*********************************" << endl;
		cout << endl;
		system( "pause" );
		cout << endl << endl;
    }
    
	inFile.close();
	outFile.close();

	return 0;
}