/********************************************************************
*** FUNCTION : ProcessFile ***
*********************************************************************
*** DESCRIPTION : run pass one ***
*** INPUT ARGS : string inFile, OpcodeTable opcodeTable ***
*** OUTPUT ARGS : No Output Args ***
*** RETURN : Void ***
*********************************************************************/
public void ProcessFile(string inFile, OpcodeTable oTable)
{
BinSearchTree sTable = new BinSearchTree();
LinkedList lTable = new LinkedList();
//read file
string[] program = File.ReadAllLines(Path.Combine(Directory.GetCurrentDirectory(), ($@"{Environment.CurrentDirectory}\\..\\..\\" + inFile)));
var file = inFile.Remove(inFile.IndexOf('.')) + ".tmp";
int num = 0;
string sAdd;
string LC;
string pLength;
string[] line = ProcessLine(program[num], out bool check);
File.Create(file).Close();
while (check) //while there is lines
{
num++;
line = ProcessLine(program[num], out check);
}
if (line[1] == "START") //for start
{
sAdd = line[2];
LC = sAdd;
sTable.Insert(new Symbol()
{
Element = line[0], //insert new symbol
Value = int.Parse(LC, System.Globalization.NumberStyles.HexNumber),
RFlag = true
});
ToFile(ref num, LC, line, file); //put in file the symbol
line = ProcessLine(program[num], out check);
}
else
{
sAdd = "00000"; //starting address 00000
LC = sAdd;
}
while (line[1] != "END") //for end
{
int count = 0;
if (line[1] != null && line[2] != null)
{
if (line[0].Contains(";"))
{
check = true;
}
if (!check)
{
if (line[0].Contains(";")) //check for comment
{
Console.WriteLine("Comment: " + line[0]);
}
if (line[0] != string.Empty && line[1] != "EQU")
{
try
{ sTable.Search(line[2]); }
catch (KeyNotFoundException)
{
string symbol = line[0];
if (char.IsLetter(symbol[0]))
{
sTable.Insert(new Symbol()
{
Element = line[0] + ':',
Value = int.Parse(LC, System.Globalization.NumberStyles.HexNumber),
RFlag = true
});
}
else
{
if (line[0].Contains(";")) //check for comment
{
Console.WriteLine("Comment: " + line[0]);
}
else
{
Console.WriteLine(string.Format("||ERROR|| Symbol {0} has an invalid character(s).", symbol));
}
}
}
}
if (oTable.Search(line[1], out Opcode opcode))
{
count = opcode.form;
}
else if (line[1] == "WORD") //for word
{
count = 3;
}
else if (line[1] == "BYTE") //for byte
{
count = InsertL("=" + line[2]).length;
}
else if (line[1] == "RESW") //for resw
{
count = int.Parse(line[2]) * 3;
}
else if (line[1] == "RESB") //for resb
{
count = int.Parse(line[2]);
}
else if (line[2] == "FLOAT" || line[2] == "NORM" || line[2] == "FIX" || line[2] == "HIO" || line[2] == "TIO" || line[2] == "SIO")
{
count = 1;
string[] temp = line;
line[0] = temp[1];
line[1] = temp[2];
line[2] = " ";
}
else if (line[1] == "EQU") //for equ
{
sTable.Insert(CheckSymbol(ref num, LC, line, sTable, file));
line = ProcessLine(program[num], out check);
continue;
}
else //if not any of those
{
Console.WriteLine(string.Format("||ERROR|| Opcode {0} not found.", line[2]));
num++;
line = ProcessLine(program[num], out check);
continue;
}
if (line[2][0] == '=')
{
lTable.Add(InsertL(line[2]));
}
}
ToFile(ref num, LC, line, file);
LC = LCCount(LC, count);
line = ProcessLine(program[num], out check);
}
else
{
num++;
line = ProcessLine(program[num], out check);
}
}
ToFile(ref num, LC, line, file);
ToScreen(file); //display sic
pLength = ((int.Parse(LC, System.Globalization.NumberStyles.HexNumber) - int.Parse(sAdd, System.Globalization.NumberStyles.HexNumber)) + CutLiteral(ref lTable, ref num, ref LC, file)).ToString("X");
Console.WriteLine("_______________________________________________________");
Console.WriteLine("\nProgram Length = " + pLength);
Console.WriteLine("_______________________________________________________");
Console.WriteLine("");
lTable.Display();
Console.WriteLine("_______________________________________________________");
Console.WriteLine("\n SYMBOL TABLE");
Console.WriteLine("{0,-10} {1,-10} {2,-10} {3,-10} {4,-10}", "LABEL", "VALUE", "RFLAG", "IFLAG", "MFLAG");
Console.WriteLine("-------------------------------------------------------");
sTable.Display();
}
/********************************************************************
*** FUNCTION : CheckSymbol ***
*********************************************************************
*** DESCRIPTION : check symbols ***
*** INPUT ARGS : ref int lineNumber, string LC, string[] line, ***
*** BinSearchTree symbolTable, string fileName ***
*** OUTPUT ARGS : None ***
*** RETURN : Symbol ***
********************************************************************/
private static Symbol CheckSymbol(ref int lineNumber, string LC, string[] line, BinSearchTree symbolTable, string fileName)
{
List <Symbol> symbols = new List <Symbol>();
bool rFlag = true;
string[] sLine;
if (int.TryParse(line[2], out int val))
{
rFlag = false;
}
else if (line[2] == "*")
{
rFlag = true;
val = int.Parse(LC, System.Globalization.NumberStyles.HexNumber);
}
else if (line[2].Contains("+")) //if has +
{
sLine = line[2].Split('+'); //split at +
foreach (var symbol in sLine)
{
symbols.Add(symbolTable.Search(symbol));
}
CheckExpression('+', sLine, symbols.ToArray(), out val, out rFlag);
}
else if (line[2].Contains("-")) //if has -
{
sLine = line[2].Split('-'); //split at -
foreach (var symbol in sLine)
{
symbols.Add(symbolTable.Search(symbol));
}
CheckExpression('-', sLine, symbols.ToArray(), out val, out rFlag);
}
ToFile(ref lineNumber, val.ToString("X"), line, fileName);
return(new Symbol {
Element = line[0], //new symbol
Value = val,
RFlag = rFlag,
IFlag = true,
MFlag = false
});
}
