stack.h

一个在linux下的shell的计算器

/*
 *
 *
 *
 */

#ifndef __STACK_H
#define __STACK_H

#include "itemlist.h"
#include "integer.h"
#include "logical.h"
#include "real.h"
#include "string.h"

#define DM_DEC 0
#define DM_HEX 1
#define DM_OCT 2

class Stack: public ItemList
{
 public:
   Stack();

   void Drop();
   void Duplicate();
   void Swap();

   void Push(Item *p);

   Item *PopItem();
   long PopInteger();
   bool PopBoolean();
   double PopDouble();
   std::string PopString();

   void SetDisplayMode(int mode);
   void Display(int levels);

 private:
   int displaymode;

};

#endif