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cse.cpp
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cse.cpp
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#include "psg.hpp"
#include "lexicon.hpp"
#include "asttost.hpp"
#include "flattenst.hpp"
#include "cse.hpp"
#include <cstring>
#include <fstream>
#include <iostream>
#include <stack>
#include <list>
#include <cmath>
EnvironmentNode *environments[1200];
stack<CSEMachineNode> cseMachineControl; // the Control stack of the CSE machine
stack<CSEMachineNode> cseMachineStack; // the "Stack" stack of values of the CSE machine
EnvironmentNode *currentEnvironment = new EnvironmentNode;
int environmentCounter = 0;
void initializeCSEMachine()
{
// initialize environment with the primitive environment (PE / e0)
currentEnvironment->environmentIndex = 0;
currentEnvironment->parentEnvironment = NULL;
currentEnvironment->previousEnvironment = NULL;
environments[environmentCounter++] = currentEnvironment;
// initialize control.
// push the first token as the e0 environment variable
CSEMachineNode e0 = CSEMachineNode();
e0.isEnvironmentMarker = true;
e0.environmentMarkerIndex = 0;
e0.defaultLabel = "e0";
cseMachineControl.push(e0);
// push the 0th control structure's elements
std::list<CSEMachineNode>::const_iterator iterator;
for (iterator = controlStructures[0].begin(); iterator != controlStructures[0].end(); ++iterator)
{
CSEMachineNode controlStructureToken = *iterator;
cseMachineControl.push(controlStructureToken);
}
// initialize stack with e0 as well
cseMachineStack.push(e0);
}
void printTree()
{
// cout << "\n\nGoing to print the tree now!\n\n";
if (!trees.empty())
{
// cout << "\n\nThis is supposed to be the only tree below!\n";
Node *treeRoot = trees.top();
recursivelyPrintTree(treeRoot, "");
}
}
void recursivelyPrintTree(Node *node, string indentDots)
{
// cout<<"\nPrinting tree for: "<<node->label<<"\n";
cout << indentDots + node->label << "\n";
if (node->firstKid != NULL)
{
// cout<<"\nPrinting firstKid tree for: "<<node->label<<"\n";
recursivelyPrintTree(node->firstKid, indentDots + ".");
}
if (node->nextSibling != NULL)
{
// cout<<"\nPrinting nextSibling tree for: "<<node->label<<"\n";
recursivelyPrintTree(node->nextSibling, indentDots);
}
// cout<<"\nDONE! Printing tree for: "<<node->label<<"\n";
}
void recursivelyPrintTreeNode(Node *node, string indentDots)
{
// cout<<"\nPrinting tree for: "<<node->label<<"\n";
cout << indentDots + node->label << "\n";
if (node->firstKid != NULL)
{
// cout<<"\nPrinting firstKid tree for: "<<node->label<<"\n";
recursivelyPrintTree(node->firstKid, indentDots + "(-.#.-)");
}
// cout<<"\nDONE! Printing tree for: "<<node->label<<"\n";
}
void printString(std::string stringToPrint)
{
for (size_t i = 0; i < stringToPrint.length(); i++)
{
if (stringToPrint.at(i) == '\\' && stringToPrint.at(i + 1) == 'n')
{
cout << "\n";
i++;
}
else if (stringToPrint.at(i) == '\\' && stringToPrint.at(i + 1) == 't')
{
cout << "\t";
i++;
}
else
{
cout << stringToPrint.at(i);
}
}
}
void processCSEMachine()
{
CSEMachineNode controlTop = cseMachineControl.top();
cseMachineControl.pop();
// cout << "\n\n Control's top is: " << controlTop.defaultLabel;
if (controlTop.isInt || controlTop.isString || controlTop.isBoolean ||
controlTop.isDummy)
{ // CSE rule 1 for ints, booleans, dummy and strings
cseMachineStack.push(controlTop);
}
else if (controlTop.isY)
{
cseMachineStack.push(controlTop);
}
else if (controlTop.isTuple)
{ // CSE rule 1 for 'nil', which can be the only tuple in a control structure
cseMachineStack.push(controlTop);
}
else if (controlTop.isName)
{ // CSE rule 1 for variables
controlTop.isName = false;
EnvironmentNode *environmentWithVariableValue = currentEnvironment;
CSEMachineNode boundedValuesNode;
bool variableValueFound = false;
int indexOfBoundVariable = 0;
while (environmentWithVariableValue != NULL)
{
// cout << "\n\nlooking for " << controlTop.nameValue << " in environment " <<
// environmentWithVariableValue->environmentIndex;
boundedValuesNode = environmentWithVariableValue->boundedValuesNode;
for (int i = 0; i < boundedValuesNode.boundVariables.size(); i++)
{
if (boundedValuesNode.boundVariables[i] == controlTop.nameValue)
{
indexOfBoundVariable = i;
variableValueFound = true;
break;
}
}
if (variableValueFound)
{
break;
}
else
{
environmentWithVariableValue = environmentWithVariableValue->parentEnvironment;
}
}
if (!variableValueFound)
{
// it could be a built-in function defined in the PE [e0]
if (controlTop.nameValue == "Print" || controlTop.nameValue == "Conc" ||
controlTop.nameValue == "Istuple" || controlTop.nameValue == "Isinteger" ||
controlTop.nameValue == "Istruthvalue" || controlTop.nameValue == "Isstring" ||
controlTop.nameValue == "Isfunction" || controlTop.nameValue == "Isdummy" ||
controlTop.nameValue == "Stem" || controlTop.nameValue == "Stern" || controlTop.nameValue == "Order" ||
controlTop.nameValue == "ItoS")
{
controlTop.isBuiltInFunction = true;
controlTop.defaultLabel = controlTop.nameValue;
cseMachineStack.push(controlTop);
}
else
{
// cout << "\n\nERROR! Value for bound variable '" << controlTop.nameValue << "' not found in environment tree! DIE!\n\n";
exit(0);
}
}
else
{
// cout << "\n\n Value of " << controlTop.nameValue << " is= ";
controlTop = environmentWithVariableValue->boundedValuesNode.tupleElements[indexOfBoundVariable];
// cout << controlTop.defaultLabel << "\n\n";
cseMachineStack.push(controlTop);
}
}
else if (controlTop.isEnvironmentMarker)
{ // CSE rule 5
CSEMachineNode stackTop = cseMachineStack.top();
cseMachineStack.pop();
if (!stackTop.isEnvironmentMarker)
{
CSEMachineNode stackTopEnvironmentVariable = cseMachineStack.top();
cseMachineStack.pop();
if (!stackTopEnvironmentVariable.isEnvironmentMarker ||
(controlTop.environmentMarkerIndex != stackTopEnvironmentVariable.environmentMarkerIndex))
{
cout << "\n ERROR in resolving environment variables on control and stack! Die now! \n";
exit(0);
}
cseMachineStack.push(stackTop);
}
else
{
if (controlTop.environmentMarkerIndex != stackTop.environmentMarkerIndex)
{
// cout << "\n ERROR in resolving environment variables on control and stack! Die now! \n";
exit(0);
}
}
currentEnvironment = environments[controlTop.environmentMarkerIndex]->previousEnvironment;
}
else if (controlTop.isLambda)
{ // CSE rule 2
controlTop.environmentMarkerIndex = currentEnvironment->environmentIndex; // index of environment in which this lambda holds
cseMachineStack.push(controlTop);
}
else if (controlTop.isGamma)
{ // CSE rule 3 & 4
CSEMachineNode result = CSEMachineNode();
CSEMachineNode operatorNode = cseMachineStack.top();
cseMachineStack.pop();
CSEMachineNode firstOperand = cseMachineStack.top();
cseMachineStack.pop();
if (operatorNode.isUnaryOperator || operatorNode.isUnaryOperator)
{ // CSE rule 3
if (operatorNode.isUnaryOperator)
{
if (operatorNode.operatorStringValue == "neg")
{
if (!firstOperand.isInt)
{
cout << "\n Operand is not int to apply 'neg', EXIT! \n";
exit(0);
}
else
{
result.isInt = true;
result.intValue = -firstOperand.intValue;
result.defaultLabel = std::to_string(result.intValue);
}
}
else if (operatorNode.operatorStringValue == "not")
{
if (!firstOperand.isBoolean)
{
cout << "\n Operand is not boolean to apply 'not', EXIT! \n";
exit(0);
}
else
{
result.isBoolean = true;
if (firstOperand.defaultLabel == "true")
{
result.defaultLabel = "false";
}
else if (firstOperand.defaultLabel == "false")
{
result.defaultLabel = "true";
}
}
}
cseMachineStack.push(result);
}
else if (operatorNode.isBinaryOperator)
{
CSEMachineNode secondOperand = cseMachineStack.top();
cseMachineStack.pop();
if (operatorNode.operatorStringValue == "**")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for ** operation! exiting! \n";
exit(0);
}
else
{
result.isInt = true;
result.intValue = pow(firstOperand.intValue, secondOperand.intValue);
result.defaultLabel = std::to_string(result.intValue);
}
}
else if (operatorNode.operatorStringValue == "*")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for * operation! exiting! \n";
exit(0);
}
else
{
result.isInt = true;
result.intValue = firstOperand.intValue * secondOperand.intValue;
result.defaultLabel = std::to_string(result.intValue);
}
}
else if (operatorNode.operatorStringValue == "aug")
{
if (!firstOperand.isTuple)
{
cout << "\n first Operand is not a tuple for 'aug' operation! exiting! \n";
exit(0);
}
else
{
result.isTuple = true;
result.numberOfElementsInTauTuple = firstOperand.numberOfElementsInTauTuple + 1;
if (firstOperand.numberOfElementsInTauTuple == 0)
{ // if the first operand is nil
result.tupleElements.push_back(secondOperand);
}
else
{
result.tupleElements = firstOperand.tupleElements;
result.tupleElements.push_back(secondOperand);
}
result.defaultLabel = "TupleOfSize=" + std::to_string(result.numberOfElementsInTauTuple);
}
}
else if (operatorNode.operatorStringValue == "-")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for - operation! exiting! \n";
exit(0);
}
else
{
result.isInt = true;
result.intValue = firstOperand.intValue - secondOperand.intValue;
result.defaultLabel = std::to_string(result.intValue);
}
}
else if (operatorNode.operatorStringValue == "+")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for + operation! exiting! \n";
exit(0);
}
else
{
result.isInt = true;
result.intValue = firstOperand.intValue + secondOperand.intValue;
result.defaultLabel = std::to_string(result.intValue);
}
}
else if (operatorNode.operatorStringValue == "/")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for '/' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = true;
result.intValue = firstOperand.intValue / secondOperand.intValue;
result.defaultLabel = std::to_string(result.intValue);
}
}
else if (operatorNode.operatorStringValue == "gr")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for 'gr' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
result.defaultLabel = firstOperand.intValue > secondOperand.intValue ? "true" : "false";
}
}
else if (operatorNode.operatorStringValue == "ge")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for 'ge' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
result.defaultLabel = firstOperand.intValue >= secondOperand.intValue ? "true" : "false";
}
}
else if (operatorNode.operatorStringValue == "ls")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for 'ls' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
result.defaultLabel = firstOperand.intValue < secondOperand.intValue ? "true" : "false";
}
}
else if (operatorNode.operatorStringValue == "le")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for 'le' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
result.defaultLabel = firstOperand.intValue <= secondOperand.intValue ? "true" : "false";
}
}
else if (operatorNode.operatorStringValue == "eq")
{
if (!((!firstOperand.isInt || !secondOperand.isInt) ||
(!firstOperand.isBoolean || !secondOperand.isBoolean) ||
(!firstOperand.isString || !secondOperand.isString)))
{
cout << "\n operands not of same type for 'eq' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
if (firstOperand.isInt)
{
result.defaultLabel = firstOperand.intValue == secondOperand.intValue ? "true" : "false";
}
else if (firstOperand.isBoolean)
{
result.defaultLabel =
firstOperand.defaultLabel == secondOperand.defaultLabel ? "true" : "false";
}
else if (firstOperand.isString)
{
result.defaultLabel =
firstOperand.stringValue == secondOperand.stringValue ? "true" : "false";
}
}
}
else if (operatorNode.operatorStringValue == "ne")
{
if (!((!firstOperand.isInt || !secondOperand.isInt) ||
(!firstOperand.isBoolean || !secondOperand.isBoolean) ||
(!firstOperand.isString || !secondOperand.isString)))
{
cout << "\n operands not of same type for 'ne' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
if (firstOperand.isInt)
{
result.defaultLabel = firstOperand.intValue != secondOperand.intValue ? "true" : "false";
}
else if (firstOperand.isBoolean)
{
result.defaultLabel =
firstOperand.defaultLabel != secondOperand.defaultLabel ? "true" : "false";
}
else if (firstOperand.isString)
{
result.defaultLabel =
firstOperand.stringValue != secondOperand.stringValue ? "true" : "false";
}
}
}
else if (operatorNode.operatorStringValue == "or")
{
if (!firstOperand.isBoolean || !secondOperand.isBoolean)
{
cout << "\n operands are not boolean for 'or' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
result.defaultLabel = (firstOperand.defaultLabel == "true" ||
secondOperand.defaultLabel == "true")
? "true"
: "false";
}
}
else if (operatorNode.operatorStringValue == "&")
{
if (!firstOperand.isBoolean || !secondOperand.isBoolean)
{
cout << "\n operands are not boolean for '&' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
result.defaultLabel = (firstOperand.defaultLabel == "true" &&
secondOperand.defaultLabel == "true")
? "true"
: "false";
}
}
cseMachineStack.push(result);
}
}
else if (operatorNode.isLambda)
{ // CSE rule 4
// cout << "\n Lambda2 \n";
// add new lambda's environment variable to control
CSEMachineNode newEnvironmentVariableForCurrentLambda = CSEMachineNode();
newEnvironmentVariableForCurrentLambda.isEnvironmentMarker = true;
newEnvironmentVariableForCurrentLambda.environmentMarkerIndex = environmentCounter++;
newEnvironmentVariableForCurrentLambda.defaultLabel =
"e" + std::to_string(newEnvironmentVariableForCurrentLambda.environmentMarkerIndex);
cseMachineControl.push(newEnvironmentVariableForCurrentLambda);
// cout << "\n Lambda3 \n";
// update currentEnvironment
EnvironmentNode *newEnvironmentForCurrentLambda = new EnvironmentNode();
newEnvironmentForCurrentLambda->parentEnvironment = environments[operatorNode.environmentMarkerIndex];
newEnvironmentForCurrentLambda->previousEnvironment = currentEnvironment;
currentEnvironment = newEnvironmentForCurrentLambda;
newEnvironmentForCurrentLambda->environmentIndex = newEnvironmentVariableForCurrentLambda.environmentMarkerIndex;
newEnvironmentForCurrentLambda->boundedValuesNode = CSEMachineNode();
newEnvironmentForCurrentLambda->boundedValuesNode.boundVariables = operatorNode.boundVariables;
environments[newEnvironmentForCurrentLambda->environmentIndex] = newEnvironmentForCurrentLambda;
// We have separate cases here instead of just assigning
// newEnvironmentForCurrentLambda->boundedValuesNode = firstOperand
// because we need to have the boundVariables and the tupleElements in the same boundedValuesNode.
if (operatorNode.boundVariables.size() ==
1)
{ // only one bound variable, then the firstOperand is stored as it is in the tupleElements
// first operand could be int/string/tuple
newEnvironmentForCurrentLambda->boundedValuesNode.tupleElements.push_back(firstOperand);
}
else
{ // there are multiple variable bindings, so the firstOperand must be a tuple and that is what we assign
// CSE Rule 11 (n-ary function)
newEnvironmentForCurrentLambda->boundedValuesNode.tupleElements = firstOperand.tupleElements;
}
// cout << "\n\nNew environment[" + std::to_string(newEnvironmentForCurrentLambda->environmentIndex) +
// "] created with parent environment[" +
// std::to_string(operatorNode.environmentMarkerIndex) + "], bound variables are:\n";
// for (int i = 0; i < newEnvironmentForCurrentLambda->boundedValuesNode.boundVariables.size(); i++) {
// cout << "\n" << newEnvironmentForCurrentLambda->boundedValuesNode.boundVariables[i] << "= " <<
// newEnvironmentForCurrentLambda->boundedValuesNode.tupleElements[i].defaultLabel <<
// "\n\n";
// }
// cout << "\n Lambda4 \n";
// add new lambda environment variable to stack
cseMachineStack.push(newEnvironmentVariableForCurrentLambda);
// cout << "\n Lambda5 \n";
// add lambda's control structure to control
std::list<CSEMachineNode>::const_iterator iterator;
for (iterator = controlStructures[operatorNode.indexOfBodyOfLambda].begin();
iterator != controlStructures[operatorNode.indexOfBodyOfLambda].end(); ++iterator)
{
CSEMachineNode controlStructureToken = *iterator;
cseMachineControl.push(controlStructureToken);
}
// cout << "\n Lambda6 \n";
}
else if (operatorNode.isY)
{ // CSE rule 12 (applying Y)
firstOperand.isYF = true;
firstOperand.isLambda = false;
cseMachineStack.push(firstOperand);
}
else if (operatorNode.isYF)
{ // CSE rule 13 (applying f.p.)
cseMachineStack.push(firstOperand);
cseMachineStack.push(operatorNode);
CSEMachineNode lambdaNode = operatorNode;
lambdaNode.isYF = false;
lambdaNode.isLambda = true;
cseMachineStack.push(lambdaNode);
CSEMachineNode gammaNode = CSEMachineNode();
gammaNode.isGamma = true;
gammaNode.defaultLabel = "gamma";
cseMachineControl.push(gammaNode);
cseMachineControl.push(gammaNode);
}
else if (operatorNode.isBuiltInFunction)
{
if (operatorNode.defaultLabel == "Print")
{
if (firstOperand.isBoolean)
{
cout << firstOperand.defaultLabel;
}
else if (firstOperand.isInt)
{
cout << firstOperand.intValue;
}
else if (firstOperand.isString)
{
printString(firstOperand.stringValue);
}
else if (firstOperand.isDummy)
{
// Do nothing
}
else if (firstOperand.isTuple)
{
if (firstOperand.tupleElements.size() == 0)
{
cout << "nil"; // empty tuple
}
else
{
cout << "(";
for (int i = 0; i < firstOperand.tupleElements.size(); i++)
{
if (firstOperand.tupleElements[i].isBoolean)
{
cout << firstOperand.tupleElements[i].defaultLabel;
}
else if (firstOperand.tupleElements[i].isInt)
{
cout << firstOperand.tupleElements[i].intValue;
}
else if (firstOperand.tupleElements[i].isString)
{
printString(firstOperand.tupleElements[i].stringValue);
}
if (i + 1 != firstOperand.tupleElements.size())
{
cout << ", ";
}
}
cout << ")";
}
}
else if (firstOperand.isLambda)
{
cout << "[lambda closure: " + firstOperand.boundVariables[0] + ": " +
std::to_string(firstOperand.indexOfBodyOfLambda) + "]";
}
else
{
cout << "\n\n ERROR! I don't know how to PRINT the value on stack= " + firstOperand.defaultLabel + "\n\n";
exit(0);
}
}
else if (operatorNode.defaultLabel == "Conc")
{
cseMachineControl.pop(); // to pop out the second gamma node
CSEMachineNode secondOperand = cseMachineStack.top();
cseMachineStack.pop();
result.isString = true;
result.stringValue = firstOperand.stringValue + secondOperand.stringValue;
cseMachineStack.push(result);
}
else if (operatorNode.defaultLabel == "Order")
{
if (!firstOperand.isTuple)
{
cout << "\n\n Error! can't apply 'Order' to a datatype other than tuple! DIE NO! \n\n ";
exit(0);
}
else
{
result.isInt = true;
result.intValue = firstOperand.numberOfElementsInTauTuple;
result.defaultLabel = std::to_string(result.intValue);
cseMachineStack.push(result);
}
}
else if (operatorNode.defaultLabel == "Stem")
{
result.isString = true;
result.stringValue = firstOperand.stringValue[0];
cseMachineStack.push(result);
}
else if (operatorNode.defaultLabel == "Stern")
{
result.isString = true;
result.stringValue = firstOperand.stringValue.substr(1);
cseMachineStack.push(result);
}
else if (operatorNode.defaultLabel == "Isstring")
{
result.isBoolean = true;
result.defaultLabel = firstOperand.isString ? "true" : "false";
cseMachineStack.push(result);
}
else if (operatorNode.defaultLabel == "Istuple")
{
result.isBoolean = true;
result.defaultLabel = firstOperand.isTuple ? "true" : "false";
cseMachineStack.push(result);
}
else if (operatorNode.defaultLabel == "Isinteger")
{
result.isBoolean = true;
result.defaultLabel = firstOperand.isInt ? "true" : "false";
cseMachineStack.push(result);
}
else if (operatorNode.defaultLabel == "ItoS")
{
if (!firstOperand.isInt)
{
cout << "ERROR! operand to ItoS is not Int! DIE NOW!";
exit(0);
}
result.isString = true;
result.defaultLabel = std::to_string(firstOperand.intValue);
result.stringValue = std::to_string(firstOperand.intValue);
cseMachineStack.push(result);
}
else if (operatorNode.defaultLabel == "Istruthvalue")
{
result.isBoolean = true;
result.defaultLabel = firstOperand.isBoolean ? "true" : "false";
cseMachineStack.push(result);
}
else
{
cout << "\n\n AYO!! I haven't defined the behavior of the function= " + operatorNode.defaultLabel + "\n\n";
exit(0);
}
}
else if (operatorNode.isTuple)
{ // CSE rule 10 for Tuple selection
result = operatorNode.tupleElements[firstOperand.intValue - 1];
cseMachineStack.push(result);
}
}
else if (controlTop.isBinaryOperator)
{ // CSE rule 6
CSEMachineNode result = CSEMachineNode();
CSEMachineNode operatorNode = controlTop;
CSEMachineNode firstOperand = cseMachineStack.top();
cseMachineStack.pop();
CSEMachineNode secondOperand = cseMachineStack.top();
cseMachineStack.pop();
if (operatorNode.operatorStringValue == "**")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for '**' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = true;
result.intValue = pow(firstOperand.intValue, secondOperand.intValue);
result.defaultLabel = std::to_string(result.intValue);
}
}
else if (operatorNode.operatorStringValue == "*")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for '*' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = true;
result.intValue = firstOperand.intValue * secondOperand.intValue;
result.defaultLabel = std::to_string(result.intValue);
}
}
else if (operatorNode.operatorStringValue == "aug")
{
if (!firstOperand.isTuple)
{
cout << "\n first Operand is not a tuple for 'aug' operation! exiting! \n";
exit(0);
}
else
{
result.isTuple = true;
result.numberOfElementsInTauTuple = firstOperand.numberOfElementsInTauTuple + 1;
if (firstOperand.numberOfElementsInTauTuple == 0)
{ // if the first operand is nil
result.tupleElements.push_back(secondOperand);
}
else
{
result.tupleElements = firstOperand.tupleElements;
result.tupleElements.push_back(secondOperand);
}
result.defaultLabel = "TupleOfSize=" + std::to_string(result.numberOfElementsInTauTuple);
}
}
else if (operatorNode.operatorStringValue == "-")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for '-' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = true;
result.intValue = firstOperand.intValue - secondOperand.intValue;
result.defaultLabel = std::to_string(result.intValue);
}
}
else if (operatorNode.operatorStringValue == "+")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for '+' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = true;
result.intValue = firstOperand.intValue + secondOperand.intValue;
result.defaultLabel = std::to_string(result.intValue);
}
}
else if (operatorNode.operatorStringValue == "/")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for '/' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = true;
result.intValue = firstOperand.intValue / secondOperand.intValue;
result.defaultLabel = std::to_string(result.intValue);
}
}
else if (operatorNode.operatorStringValue == "gr")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for 'gr' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
result.defaultLabel = firstOperand.intValue > secondOperand.intValue ? "true" : "false";
}
}
else if (operatorNode.operatorStringValue == "ge")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for 'ge' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
result.defaultLabel = firstOperand.intValue >= secondOperand.intValue ? "true" : "false";
}
}
else if (operatorNode.operatorStringValue == "ls")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for 'ls' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
result.defaultLabel = firstOperand.intValue < secondOperand.intValue ? "true" : "false";
}
}
else if (operatorNode.operatorStringValue == "le")
{
if (!firstOperand.isInt || !secondOperand.isInt)
{
cout << "\n operands not int for 'le' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
result.defaultLabel = firstOperand.intValue <= secondOperand.intValue ? "true" : "false";
}
}
else if (operatorNode.operatorStringValue == "eq")
{
if (!((!firstOperand.isInt || !secondOperand.isInt) ||
(!firstOperand.isBoolean || !secondOperand.isBoolean) ||
(!firstOperand.isString || !secondOperand.isString)))
{
cout << "\n operands not of same type for 'eq' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
if (firstOperand.isInt)
{
result.defaultLabel = firstOperand.intValue == secondOperand.intValue ? "true" : "false";
}
else if (firstOperand.isBoolean)
{
result.defaultLabel =
firstOperand.defaultLabel == secondOperand.defaultLabel ? "true" : "false";
}
else if (firstOperand.isString)
{
result.defaultLabel =
firstOperand.stringValue == secondOperand.stringValue ? "true" : "false";
}
}
}
else if (operatorNode.operatorStringValue == "ne")
{
if (!((!firstOperand.isInt || !secondOperand.isInt) ||
(!firstOperand.isBoolean || !secondOperand.isBoolean) ||
(!firstOperand.isString || !secondOperand.isString)))
{
cout << "\n operands not of same type for 'ne' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
if (firstOperand.isInt)
{
result.defaultLabel = firstOperand.intValue != secondOperand.intValue ? "true" : "false";
}
else if (firstOperand.isBoolean)
{
result.defaultLabel =
firstOperand.defaultLabel != secondOperand.defaultLabel ? "true" : "false";
}
else if (firstOperand.isString)
{
result.defaultLabel =
firstOperand.stringValue != secondOperand.stringValue ? "true" : "false";
}
}
}
else if (operatorNode.operatorStringValue == "or")
{
if (!firstOperand.isBoolean || !secondOperand.isBoolean)
{
cout << "\n operands are not boolean for 'or' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
result.defaultLabel = (firstOperand.defaultLabel == "true" || secondOperand.defaultLabel == "true")
? "true"
: "false";
}
}
else if (operatorNode.operatorStringValue == "&")
{
if (!firstOperand.isBoolean || !secondOperand.isBoolean)
{
cout << "\n operands are not boolean for '&' operation! exiting! \n";
exit(0);
}
else
{
result.isInt = false;
result.isBoolean = true;
result.defaultLabel = (firstOperand.defaultLabel == "true" && secondOperand.defaultLabel == "true")
? "true"
: "false";
}
}
cseMachineStack.push(result);
}
else if (controlTop.isUnaryOperator)
{ // CSE rule 7
CSEMachineNode result = CSEMachineNode();
CSEMachineNode operatorNode = controlTop;
CSEMachineNode firstOperand = cseMachineStack.top();