public void EnterOffset(GBASMParser.OffsetContext context)
{
PrintLine("Offset");
SetArgLoc(Locations.OFFSET);
LocationInfo l = GetCurrentArg();
l.isOffset = true;
}
public void ExitString_data(GBASMParser.String_dataContext context)
{
//throw new NotImplementedException();
}
public void ExitTriad(GBASMParser.TriadContext context)
{
//throw new NotImplementedException();
}
public void ExitOp(GBASMParser.OpContext context)
{
PrintLine("End Op");
int starting_len = rom.Count;
currentInst.AppendTo(rom);
for(int i = starting_len; i < rom.Count; ++i)
{
MapByteToLine(context, i);
}
byteLines.Add(BuildByteString());
}
public void ExitRepblock(GBASMParser.RepblockContext context)
{
RepInfo r = rep_stack.Pop();
int romEnd = rom.Count;
int lineEnd = lines.Count;
if (context.Stop != null)
{
lines[lines.Count-1] += "; " + (inputStream.GetText(new Interval((int)context.Start.StartIndex, (int)context.Stop.StopIndex)));
}
else
{
lines[lines.Count-1] += "; " + (inputStream.GetText(new Interval((int)context.Start.StartIndex, (int)context.Start.StopIndex)));
}
while (r.reps > 0)
{
for (int index = r.linesStart; index < lineEnd; ++index )
{
lines.Add(lines[index] + "; REPT" + index);
byteLines.Add(byteLines[index]);
}
for (int index = r.romStart; index < romEnd; ++index)
{
RomPush(context, rom[index]);
}
r.reps--;
}
}
public void ExitLabel(GBASMParser.LabelContext context)
{
}
public void ExitNegvalue(GBASMParser.NegvalueContext context)
{
}
public void EnterSys(GBASMParser.SysContext context)
{
PrintLine("Starting Sys");
rom_ptr = rom.Count;
}
public void EnterTriad(GBASMParser.TriadContext context)
{
PrintLine("Triad Detected");
argFSM = ArgFSM.SRC;
currentInst.op = Instruction.MapOp(context.GetText());
}
public void EnterSection(GBASMParser.SectionContext context)
{
PrintLine("Starting Section");
if (context.Stop != null)
{
lines.Add(inputStream.GetText(new Interval((int)context.Start.StartIndex, (int)context.Stop.StopIndex)));
}
else
{
lines.Add(inputStream.GetText(new Interval((int)context.Start.StartIndex, (int)context.Start.StopIndex)));
}
isSectionArg = true;
sec_stack.Push(new SectionInfo(rom.Count, lines.Count));
}
public void EnterString_data(GBASMParser.String_dataContext context)
{
PrintLine("Literal Value");
if (db_stack > 0)
{
String s = context.GetText();
//Remove quotations
for (int i = 1; i < s.Length-1; ++i)
{
RomPush(context, (Byte)s[i]);
}
}
}
public void EnterRepblock(GBASMParser.RepblockContext context)
{
//We do NOT support label resolution in rep blocks
//Absolute labels MIGHT work
isReptArg = true;
rep_stack.Push(new RepInfo(rom.Count, lines.Count));
//Need to pad byteLines
//byteLines.Add("");
}
public void EnterRegister(GBASMParser.RegisterContext context)
{
PrintLine("Register");
LocationInfo l = GetCurrentArg();
l.isReg = true;
String target = context.GetText();
SetArgLoc(ParseLocation(target));
if(target == "HL+" || target == "HLI")
{
currentInst.op = Instructions.LDI;
}
if (target == "HL-" || target == "HLD")
{
currentInst.op = Instructions.LDD;
}
}
public void EnterOp(GBASMParser.OpContext context)
{
PrintLine("Start op");
rom_ptr = rom.Count;
if ((context.Stop != null) && (context.Start.StartIndex < context.Stop.StopIndex))
{
lines.Add(inputStream.GetText(new Interval(context.Start.StartIndex, context.Stop.StopIndex)));
}
else
{
lines.Add(inputStream.GetText(new Interval(context.Start.StartIndex, context.Start.StopIndex)));
}
currentInst = new Instruction();
}
public void ExitInclude(GBASMParser.IncludeContext context)
{
//throw new NotImplementedException();
}
public void EnterValue(GBASMParser.ValueContext context)
{
PrintLine("Numeric Value");
String s = context.GetText();
PrintLine(s);
Int16 value = (Int16)ParseNum(s);
if (isReptArg)
{
isReptArg = false;
rep_stack.Peek().reps = value-1; //Offset for the fact the original code will be copied
}
else if (isSectionArg)
{
isSectionArg = false;
sec_stack.Peek().size = value;
}
else
{
if (db_stack > 0)
{
RomPush(context, (Byte)value);
}
else
{
if (Math.Abs(value) > 255)
{
SetArgLoc(Locations.WIDE_IMM);
}
else
{
SetArgLoc(Locations.IMM);
}
SetArgVal(value);
}
}
}
public void ExitJump(GBASMParser.JumpContext context)
{
}
public void ExitArg(GBASMParser.ArgContext context)
{
DecArg();
}
public void ExitMemory(GBASMParser.MemoryContext context)
{
}
public void ExitData(GBASMParser.DataContext context)
{
db_stack -= 1;
PrintLine("DB at " + db_stack.ToString());
}
public void ExitOffset(GBASMParser.OffsetContext context)
{
}
public void ExitDb(GBASMParser.DbContext context)
{
//throw new NotImplementedException();
}
public void ExitRegister(GBASMParser.RegisterContext context)
{
}
public void ExitEval(GBASMParser.EvalContext context)
{
PrintLine("Finished");
}
public void ExitSection(GBASMParser.SectionContext context)
{
//Use Label Buf
SectionInfo info = sec_stack.Pop();
int distance_req = info.size - rom.Count;
for(int i = 0; i < distance_req; ++i)
{
RomPush(context, 0x00);
}
byteLines.Add(BuildByteString());
}
public void ExitExp(GBASMParser.ExpContext context)
{
PrintLine("End Exp");
}
public void ExitSys(GBASMParser.SysContext context)
{
PrintLine("Ending Sys");
//MapByteToLine(rom.Count, context.Start.Line);
}
public void ExitFlag(GBASMParser.FlagContext context)
{
}
public void ExitValue(GBASMParser.ValueContext context)
{
}
public void EnterNegvalue(GBASMParser.NegvalueContext context)
{
PrintLine("Signed Value");
Int16 value = (Int16)(-ParseNum(context.GetText().Substring(1)));
if (db_stack > 0)
{
RomPush(context, (Byte)value);
}
else
{
if (Math.Abs(value) > 127)
{
SetArgLoc(Locations.WIDE_IMM);
}
else
{
SetArgLoc(Locations.IMM);
}
SetArgVal(value);
}
}
