public static PreInstruction[] ParseSource(string[] sourceLines, ParsingStatus status)
{
status.LocationCounter = 0;
int endLineNumber = -1;
var preInstructions = new List <PreInstruction>();
for (int lineNumber = 0; lineNumber < sourceLines.Length; lineNumber++)
{
status.LineNumber = lineNumber;
if (endLineNumber != -1 && !IsCommentLine(sourceLines[lineNumber]))
{
status.ReportParsingWarning(LineSection.CommentField, 0, sourceLines[lineNumber].Length, "END has been parsed; line will be treated as comment");
preInstructions.Add(new ParsedSourceLine(lineNumber, sourceLines[lineNumber]));
}
else
{
var parsedLine = ParseLine(sourceLines[lineNumber], status);
preInstructions.Add(parsedLine);
if (parsedLine.OpField == "END")
{
endLineNumber = preInstructions.Count - 1;
}
}
}
if (endLineNumber == -1)
{
status.Findings.Add(new AssemblyError(int.MinValue, LineSection.CommentField, 0, 0, new ParsingError("END operation is mandatory but not included")));
}
else
{
// all symbols that are not yet defined at the end of the parsing process are treated as if "<symbolname> CON *" instructions were included just before the END instruction
foreach (SymbolBase symbol in status.Symbols)
{
if (!symbol.IsSymbolDefined)
{
symbol.SetValue(status.LocationCounter);
var parameters = new LoaderInstructionParameters(new NumberValue(symbol.MemoryWordSign, symbol.MemoryWordMagnitude), 0);
var instruction = new PreInstruction(mLoaderInstructions["CON"], parameters);
preInstructions.Insert(endLineNumber, instruction);
status.LocationCounter++;
endLineNumber++;
}
}
}
return(preInstructions.ToArray());
}
static void GetMixOrLoaderInstructionAndParameters(string opField, string addressField, ParsingStatus status, out InstructionBase instruction, out IInstructionParameters instructionParameters)
{
status.LineSection = LineSection.AddressField;
instructionParameters = null;
instruction = mLoaderInstructions[opField];
if (instruction != null)
{
instructionParameters = LoaderInstructionParameters.ParseAddressField(instruction, addressField, status);
}
else
{
instruction = mInstructionSet[opField];
if (instruction != null)
{
instructionParameters = MixInstructionParameters.ParseAddressField(instruction, addressField, status);
status.LocationCounter++;
}
}
}
