roller.h

Go to the documentation of this file.

#ifndef ROLLER_CLASS
#define ROLLER_CLASS

/*****************************************************************************\
*                                                                             *
*  Name   : roller                                                            *
*  Author : Chris Koeritz                                                     *
*                                                                             *
*******************************************************************************
* Copyright (c) 1996-$now By Author.  This program is free software; you can  *
* redistribute it and/or modify it under the terms of the GNU General Public  *
* License as published by the Free Software Foundation; either version 2 of   *
* the License or (at your option) any later version.  This is online at:      *
*     http://www.fsf.org/copyleft/gpl.html                                    *
* Please send any updates to: fred@gruntose.com                               *
\*****************************************************************************/

#include <basis/definitions.h>


template <class contents>
class roller
{
public:
  roller(contents start_of_range, contents end_of_range);

  ~roller();

  // these report the constructor parameters.
  contents minimum() { return _start_of_range; }
  contents maximum() { return _end_of_range; }

  contents next_id();

  contents current() const;

  void set_current(contents new_current);

private:
  contents _current_id;  
  contents _start_of_range;  
  contents _end_of_range;  
};



class int_roller : public roller<int>
{
public:
  int_roller(int start_of_range, int end_of_range)
          : roller<int>(start_of_range, end_of_range) {}
};

#endif

---