public string ConvertArrayCreationNode(ArrayCreationNode acn, Dictionary <string, int> dict)
{
Func <string, string, string> f = (x, y) => x + "\t ; " + y;
string code = converter.ConvertToCode(converter.Convert(acn.size, dict)
+ "\t \t ; length of array",
f("mov ecx, [heapIndex]", "ecx = current position in heap"),
"shl eax, 2" + "\t \t ; length = length * 4",
"add ecx, eax" + "\t \t ; ecx = position + length * 4 ",
f("mov eax, [heapIndex]", "eax = heapIndex"),
f("mov [heapIndex], ecx", "heapIndex = ecx"));
return(code);
}
public string Comparator(BinaryOperationNode bnode, Dictionary <string, int> variableIndex)
{
string instructions = converter.ConvertToCode(StandardBinaryOperation(bnode, variableIndex));
string zeroFlag = converter.ConvertToCode("cmp eax, ecx", "lahf", "shr eax, 14", "and eax, 1");
string signFlag = converter.ConvertToCode("cmp eax, ecx", "lahf", "shr eax, 15", "and eax, 1");
string comb = zeroFlag + converter.ConvertToCode("mov edx, eax", "lahf", "shr eax, 14", "and eax, 1");
string op = "";
string negate = converter.ConvertToCode("not eax", "and eax, 1");
switch (bnode.operation)
{
case "==": op = zeroFlag; break;
case "<": op = signFlag; break;
case "<=": op = comb; break;
case "!=": op = zeroFlag + negate; break;
case ">=": op = signFlag + negate; break;
case ">": op = comb + negate; break;
default: throw new Exception("Comparator " + bnode.operation + " is not being converted.");
}
return(instructions + op);
}