object_base.h

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#ifndef OBJECT_BASE_CLASS
#define OBJECT_BASE_CLASS

/*****************************************************************************\
*                                                                             *
*  Name   : object_base                                                       *
*  Author : Chris Koeritz                                                     *
*                                                                             *
*******************************************************************************
* Copyright (c) 1999-$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 "istring.h"


class object_base
{
public:
  virtual ~object_base();  
  
  virtual const char *class_name() const = 0;

  virtual istring instance_name() const;

  virtual istring text_form() const;

};



#define IMPLEMENT_CLASS_NAME(objname) \
  static const char *static_class_name() { return (objname); } \
  virtual const char *class_name() const { return static_class_name(); }



class istring_object : public virtual object_base, public istring
{
public:
  istring_object() : object_base(), istring() {}
  istring_object(const istring &initial) : object_base(), istring(initial) {}
  IMPLEMENT_CLASS_NAME("istring");
};


class clonable
{
public:
  virtual ~clonable();
  virtual clonable *clone() const = 0;
};



class synchronizer_base
{
public:
  virtual ~synchronizer_base();
  virtual void establish_lock() = 0;
  virtual void repeal_lock() = 0;
};


template <class type1, class type2>
class pairing
{
public:
  type1 _a;
  type2 _b;

  pairing<type1, type2>(type1 a, type2 b) : _a(a), _b(b) {}

  type1 &get1() { return _a; }
  const type1 &get1() const { return _a; }
  type2 &get2() { return _b; }
  const type2 &get2() const { return _b; }
};

#endif

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