// utility function to print initial state of
// a chat session
void PrintToDate(IChatSession *pcs)
{
IEnumString *pes = 0;
HRESULT hr = pcs->GetStatements(&pes);
if (SUCCEEDED(hr))
{
PrintAllStrings(pes);
pes->Release();
}
}
short ResolveReferences(void)
{
Stack Ref;
Instruction I,j;
int Labelref;
Ref = AllocateStack (200);
for (I = 1; I <= SizeOf (Labels); I++)
{
if (LabelOf(I) != UndefinedString)
if (Element(Ref,LabelOf(I)) == UndefinedString)
Assign(Ref,LabelOf(I),I);
else
{
fprintf(output,"<<< MACHINE ERROR >>>: ");
fprintf(output,"DUPLICATE INSTRUCTION WITH LABEL ");
fprintf(output," %d **",LabelOf(I));
WriteString(output,LabelOf(I));
fprintf(output,"**: LINE %1d \n",I);
return(false);
}
}
for (I = 1; I <= SizeOf(Labels); I++)
{
if (OpCodeOf(I) == GOTOOP || OpCodeOf(I) == CONDOP ||
OpCodeOf(I) == CODEOP)
{
Labelref = Element(Ref,Operand1Of(I));
if (Labelref == 0)
{
fprintf(output,"<<< MACHINE ERROR >>>: ");
fprintf(output,"NO INSTRUCTION WITH LABEL ");
fprintf(TraceFile," %d ",Operand1Of(I));
fprintf(output,"': LINE %1d \n",I);
return(false);
}
Assign ( Ref, Operand1Of(I), 1000000+Labelref );
Assign ( Operand1, I, Labelref % 1000000);
}
if (OpCodeOf(I) == CONDOP)
{
Labelref = Element(Ref,Operand2Of(I));
if (Labelref == 0)
{
fprintf(output,"<<< MACHINE ERROR >>>: ");
fprintf(output,"NO INSTRUCTION WITH LABEL ");
fprintf(output," %d ",Operand2Of(I));
fprintf(output,"': LINE %1d \n",I);
return(false);
}
Assign (Ref, Operand2Of(I), 1000000+Labelref );
Assign (Operand2, I, Labelref % 1000000);
}
if (OpCodeOf(I) == LITOP || OpCodeOf(I) == LLVOP
|| OpCodeOf(I) == LGVOP || OpCodeOf(I) == SLVOP
|| OpCodeOf(I) == SGVOP || OpCodeOf(I) == LLIVOP
|| OpCodeOf(I) == LGIVOP || OpCodeOf(I) == SLIVOP
|| OpCodeOf(I) == SGIVOP || OpCodeOf(I) == LLAOP
|| OpCodeOf(I) == LGAOP || OpCodeOf(I) == LUVOP
|| OpCodeOf(I) == SUVOP || OpCodeOf(I) == POPOP
|| OpCodeOf(I) == CALLOP || OpCodeOf(I) == RTNOP)
Assign (Operand1,I,StringToInteger(Operand1Of(I)));
if (OpCodeOf(I) == LUVOP || OpCodeOf(I) == SUVOP )
Assign(Operand2,I,StringToInteger(Operand2Of(I)));
}
for (I =1; I <= TextSize(); I++ )
{
if (Element(Ref,I) != 0)
if (Element(Ref,I) < 1000000)
{
fprintf(output,"<<< MACHINE ERROR >>>: ");
fprintf(output,"NO REFERENCE TO INSTRUCTION WITH LABEL ");
fprintf(output,"%d ", I);
fprintf(output,": LINE %1d \n",I);
fprintf(output,"Element(Ref)= %d\n",Element(Ref,I));
PrintAllStrings(stdout);
return(false);
}
}
return(true);
}
