#include <iostream>
#include <string>
#include <vector>
#include <stack>
#include "node.h"
#include "Calculator.h"
#include "NodeCreator.h"
#include "VariableMap.h"
#include "globals.h"
#include "arithmetica.h"


using namespace std;
/**
 *The Calulator class is responsible for assigning tasks to other functions.
 *It does all of its work from the function performCalculations.
 *These functions are found in the NodeCreator class, which parses the
 *input and forms with a evaluatable node. The Calculator class then calls
 *on the evaluation() function of Node in order to process the node and
 *produce a final numerical answer. The value of the node is stored, and
 *so is the description of the node.
 *
 *Written by Jessica Smith
 */
 //constructor
Calculator::Calculator(Arithmetica * processortype)
	:myProcessorType(processortype)
{
    
}
void Calculator::performCalculations()
{
    //repeated until user chooses to stop this funtion calls all of the function to process and calculate
    VariableMap VarMap; //one map is created to store all
    //variables for current run.
    int count=1;
    string line;
    cout<<count<<"->";
    while(getline(cin,line))//gets the user's input
    {
        count ++;
        if(line[0]!=COMMENT_CHARACTER)
        {
            myProcessorType->GetVariableMap(VarMap);
            myProcessorType->GetInput(line);
            NodeCreator * listNodes =new NodeCreator(VarMap,myProcessorType,myProcessorType->isSpecial());
            vector<Node*> NodeList;  //stores all nodes created
            stack<Node*> StackList;
            NodeList =myProcessorType->CreateNodes();//creates the nodes from input
            StackList=listNodes->makePostfix(NodeList);//creates postfix version
            Node* mainNode =listNodes->makeNodeTree(StackList);//creates the single node
            if(mainNode->evaluate()==0&&mainNode->getAlert())
            {
                cout<<VarMap.lookUpVar(mainNode->description())->evaluate()<<endl;;
            }
            else
            {
                VarMap.upDateVariables(mainNode->description(),mainNode);
            }
        }
        else{
            cout<<line<<endl;
        }
        cout<<endl<<count<<"->";;
        
    }
}