public void ReplaceAddressWithSymbol(int addressToReplace, string symbolName, bool extendSearchToAllNumbers)
{
if (Variables.ContainsKey(symbolName))
{
if (Variables[symbolName].GetValue(Variables, null) != addressToReplace)
{
throw new Exception("Symbol " + symbolName + " already has a different meaning");
}
}
else
{
Variables[symbolName] = new NumberOperand(addressToReplace);
}
foreach (ProgramLine line in Lines)
{
if (line.Type == ProgramLineType.OpCodeInstruction)
{
if (line.InstructionType.Param1Type == AddressingMode.Extended ||
line.InstructionType.Param1Type == AddressingMode.Relative ||
(extendSearchToAllNumbers && line.InstructionType.Param1Type == AddressingMode.Immediate16))
{
if (line.OpCodeParameters[0].NumberExpression.GetValue(Variables, line) == addressToReplace)
{
ReplaceAddressWithSymbolInProgramLine(line, 0, line.InstructionType.Param1Type == AddressingMode.Relative, symbolName);
}
}
if (line.InstructionType.Param2Type == AddressingMode.Extended ||
line.InstructionType.Param2Type == AddressingMode.Relative ||
(extendSearchToAllNumbers && line.InstructionType.Param2Type == AddressingMode.Immediate16))
{
if (line.OpCodeParameters[1].NumberExpression.GetValue(Variables, line) == addressToReplace)
{
ReplaceAddressWithSymbolInProgramLine(line, 1, line.InstructionType.Param2Type == AddressingMode.Relative, symbolName);
}
}
}
else if (extendSearchToAllNumbers && line.Type == ProgramLineType.AssemblerDirective)
{
if (line.DirectiveName == "DEFW" && line.DirectiveParameters[0].NumberExpression.GetValue(Variables, line) == addressToReplace)
{
// Parse new line from text
string newDirectiveText = line.DirectiveNameToken.TextWithLeadingWhiteSpace;
if (line.LabelToken != null)
{
newDirectiveText = line.LabelToken.TextWithLeadingWhiteSpace + newDirectiveText;
}
if (line.DirectiveParameters[0].Tokens[0].LeadingWhiteSpace != null)
{
newDirectiveText += line.DirectiveParameters[0].Tokens[0].LeadingWhiteSpace.Text;
}
else
{
newDirectiveText += " ";
}
newDirectiveText += symbolName;
ProgramLine newDirectiveLine = Assembler.ParseProgramLine(newDirectiveText);
// Copy textual representation to the original program Line
line.CopyTextualRepresentationFrom(newDirectiveLine);
}
}
}
}
public void ReplaceAddressWithSymbol(int addressToReplace, string symbolName, bool extendSearchToAllNumbers)
{
if (Variables.ContainsKey(symbolName))
{
if (Variables[symbolName].GetValue(Variables, null) != addressToReplace)
{
throw new Exception("Symbol " + symbolName + " already has a different meaning");
}
}
else
{
Variables[symbolName] = new NumberOperand(addressToReplace);
}
foreach (ProgramLine line in Lines)
{
if (line.Type == ProgramLineType.OpCodeInstruction)
{
if (line.InstructionType.Param1Type == AddressingMode.Extended ||
line.InstructionType.Param1Type == AddressingMode.Relative ||
(extendSearchToAllNumbers && line.InstructionType.Param1Type == AddressingMode.Immediate16))
{
if (line.OpCodeParameters[0].NumberExpression.GetValue(Variables, line) == addressToReplace)
{
ReplaceAddressWithSymbolInProgramLine(line, 0, line.InstructionType.Param1Type == AddressingMode.Relative, symbolName);
}
}
if (line.InstructionType.Param2Type == AddressingMode.Extended ||
line.InstructionType.Param2Type == AddressingMode.Relative ||
(extendSearchToAllNumbers && line.InstructionType.Param2Type == AddressingMode.Immediate16))
{
if (line.OpCodeParameters[1].NumberExpression.GetValue(Variables, line) == addressToReplace)
{
ReplaceAddressWithSymbolInProgramLine(line, 1, line.InstructionType.Param2Type == AddressingMode.Relative, symbolName);
}
}
}
else if(extendSearchToAllNumbers && line.Type == ProgramLineType.AssemblerDirective)
{
if (line.DirectiveName == "DEFW" && line.DirectiveParameters[0].NumberExpression.GetValue(Variables, line) == addressToReplace)
{
// Parse new line from text
string newDirectiveText = line.DirectiveNameToken.TextWithLeadingWhiteSpace;
if (line.LabelToken != null)
{
newDirectiveText = line.LabelToken.TextWithLeadingWhiteSpace + newDirectiveText;
}
if (line.DirectiveParameters[0].Tokens[0].LeadingWhiteSpace != null)
{
newDirectiveText += line.DirectiveParameters[0].Tokens[0].LeadingWhiteSpace.Text;
}
else
{
newDirectiveText += " ";
}
newDirectiveText += symbolName;
ProgramLine newDirectiveLine = Assembler.ParseProgramLine(newDirectiveText);
// Copy textual representation to the original program Line
line.CopyTextualRepresentationFrom(newDirectiveLine);
}
}
}
}
