calculator.h

一个在linux下的shell的计算器

/*
 *
 *
 *
 */

#ifndef __CALCULATOR_H
#define __CALCULATOR_H

#include <string>
#include "stack.h"
#include "symboltable.h"
#include "operation.h"

class Calculator
{
 private:
 
  // Private methods

  void ApplyZeroArity(Operation p);
  void ApplyUnary(Operation p);
  void ApplyBinary(Operation p);

 protected:

  SymbolTable varlist;

 public:

  Stack stack;

  // 
  Calculator();
  ~Calculator();

  // Public methods 

  void Enter(Item *p);

  void Execute(Operation p);
};

#endif