//Editor-Info: -*- C++ -*-
//
//Subject: TOVE project / OVOPS++
//
//File: state.h
//
//Version: $Revision: 1.12 $
//
//State: $State: Exp $
//
//Date: $Date: 1998/10/05 07:09:49 $
//
//Organisation:
//      Helsinki University of Technology
//      Laboratory of Telecommunications Software and Multimedia
// 
//Authors:
//      Pasi Nummisalo
//	Vesa-Matti Puro
//
//Description:
//      Protocols are implemented using the State pattern, which means
//      that each state of the Protocol is represented by a separate
//      object. There will be excatly one instance of each state class,
//      and they will not have to be dynamically created or destroyed. 
//
//      State pattern allows an object to alter its behavior when its
//      internal state changes. The object will appear to change its class.
//      Singleton pattern ensures a class only has one instance, and
//      provides a global point of access to it.
//
//Copyright:
//      Copyright 1999 Helsinki University of Technology
//      ALL RIGHTS RESERVED BETWEEN JANUARY 1996 AND JUNE 1999.
//     
//      
//Licence:
//     
//
//History:
//
//

#ifndef __PF_STATE_H__
#define __PF_STATE_H__

#include <typeinfo>

class pfState 
{
    protected:
        pfState(void);
        virtual ~pfState(void);

    private:
        // copy constructor and copy assignment operator are only declared
        pfState(const pfState &other_);
        const pfState &operator=(const pfState &other_);
};

#endif // __PF_STATE_H__