private void resolveDeferredArguments()
{
foreach (ArgumentDeferred deferred in m_deferredArguments)
{
ArgumentVisitor argumentVisitor = new ArgumentVisitor(m_equValues, allowDefer: false);
Argument argument = argumentVisitor.Visit(deferred.m_context);
int index = deferred.m_location;
foreach (byte b in argument.generateBytes(deferred.m_opcode, deferred.m_relativeTo))
{
Debug.Assert(m_objectCode[index] == 0xDF);
Console.WriteLine("{0:X2} -> {1:X2}", m_objectCode[index], b);
m_objectCode[index] = b;
index++;
}
}
}
public override object VisitStmtOpcode(AsmParser.StmtOpcodeContext context)
{
string opcode = context.opcode.Text.ToUpper();
Argument argument = null;
if (context.argument() != null)
{
ArgumentVisitor argumentVisitor = new ArgumentVisitor(m_equValues, allowDefer: true);
argument = argumentVisitor.Visit(context.argument());
}
else
{
argument = new ArgumentInherent();
}
switch (opcode)
{
case "ORG":
// TODO
break;
case "END":
Console.WriteLine("END, program start at {0}", argument);
break;
default:
List <Opcode> candidates = Opcode.lookUpOpcode(opcode);
if (candidates.Count == 0)
{
throw new InvalidOperationException("Unsupported opcode '" + opcode + "'");
}
Console.WriteLine("{0} {1}", opcode, argument);
foreach (Opcode candidate in candidates)
{
Console.WriteLine(" {0}", candidate);
}
generateInstruction(candidates, argument);
break;
}
return(null);
}
