exception.h

一个在linux下的shell的计算器

/*
 *
 *
 *
 */

#ifndef __EXCEPTION_H
#define __EXCEPTION_H

#include "item.h"

//
//
//
class Exception
{
 public:
  virtual std::string ToString() = 0;
  virtual ~Exception();
};

//
//
//
class StackError: public Exception
{
 public:
  std::string ToString();
};

//
//
//
class UnknownOperation: public Exception
{
 private:
  std::string name;

 public:
  UnknownOperation(std::string op);
  std::string ToString();
};

//
//
//
class UnknownVariable: public Exception
{
 private:
  std::string name;

 public:
  UnknownVariable(std::string var);
  std::string ToString();
};

//
//
//
class InvalidConversion: public Exception
{
 private:
  itemtype fromtype, totype;

 public:
  InvalidConversion(itemtype from, itemtype to);
  std::string ToString();
};

#endif