// Add a new record to the table
public void AddRecord(TableRecord in_record)
{
lookUp.Add(in_record.Lexeme(), size);
in_record.SetOffset(size);
size = in_record.Size() + size;
records.Add(in_record);
in_record.printRecord();
}
// Build code to push an identifier on the stack
public void GenPushID(string lex)
{
SymbolTable curr = tables;
int tableActual = tableNum;
int cIndex = -1;
bool keepSearching = true;
// Search the symbol tables for the id
while (keepSearching)
{
cIndex = curr.GetOffset(lex);
if (cIndex != -1)
{
keepSearching = false;
}
else if (cIndex == -1 && curr.GetParent() != null)
{
curr = curr.GetParent();
tableActual = tableActual - 1;
}
else
{
keepSearching = false;
semanticError = true;
}
}
// Couldn't find it
if (cIndex == -1)
{
ErrorMessage("Identifier " + parse.currentLexeme +
"doesn't exist in this scope.");
semanticError = true;
}
// Did find it, push it
else
{
TableRecord cRec = curr.GetRecord(cIndex);
string cType = cRec.Type();
operandType.Push(cType);
prog.Append("PUSH ");
prog.Append(cIndex);
prog.Append("(D");
prog.Append(tableActual);
prog.Append(")\n");
if (!negFlag)
{
//do nothing
}
else if (negFlag && cType == "int")
{
prog.Append("NEGS\n");
negFlag = false;
}
else if (negFlag && cType == "float")
{
prog.Append("NEGSF\n");
negFlag = false;
}
else
{
semanticError = true;
ErrorMessage("Tried to negate an invalid type.");
negFlag = false;
}
}
}
