#pragma once



#include "stdafx.h"
#include "parseStrategy.h"
#include <map>
using namespace std;


class Calculatable {
public:
	virtual int calculate(int a, int b) = 0;
};

class addable : public Calculatable {
public:
	int calculate(int a, int b);
};

class subtractable : public Calculatable {
public:
	int calculate(int a, int b);
};

class dividable : public Calculatable {
public:
	int calculate(int a, int b);
};

class multipliable : public Calculatable {
public:
	int calculate(int a, int b);
};

class exponentiation : public Calculatable {
public:
	int calculate(int a, int b);
};

class Calculator {
protected:
	int memory;
	parseStrategy* ps;

private:
	map<char, Calculatable*> maps;
public:
	Calculator();
	void setParser(parseStrategy* strat);
	void addOperation(char a, Calculatable* b);
	int calculate(char c, int i1, int i2);
	int calculate(string s);
};