state.h

//
// state.h
//
// Copyright (C) 1996 Limit Point Systems, Inc.
//
// Author: Curtis Janssen <cljanss@limitpt.com>
// Maintainer: LPS
//
// This file is part of the SC Toolkit.
//
// The SC Toolkit is free software; you can redistribute it and/or modify
// it under the terms of the GNU Library General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
//
// The SC Toolkit is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public License
// along with the SC Toolkit; see the file COPYING.LIB.  If not, write to
// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
//
// The U.S. Government is granted a limited license as per AL 91-7.
//
 
#ifndef _util_state_state_h
#define _util_state_state_h
 
#include <util/class/class.h>
 
namespace sc {
 
class StateIn;
class StateOut;
class TranslateDataIn;
class TranslateDataOut;
 
 
class SavableState: virtual public DescribedClass {
  protected:
    SavableState();
    SavableState(const SavableState&);
#ifndef __GNUC__
  public:
#endif
    SavableState& operator=(const SavableState&);
  public:
    virtual ~SavableState();
 
    // save functions
 
    void save_state(StateOut&);
 
    // Like save_state(StateOut&), but will handle null pointers correctly.
    static void save_state(SavableState*s, StateOut&);
 
    void save_object_state(StateOut&);
 
    virtual void save_vbase_state(StateOut&);
 
    virtual void save_data_state(StateOut&);
 
    // restore functions
 
    static SavableState* restore_state(StateIn& si);
    static SavableState* key_restore_state(StateIn& si,
                                           const char *keyword);
    static SavableState* dir_restore_state(StateIn& si,
                                           const char *objectname,
                                           const char *keyword = 0);
 
  protected:
 
    SavableState(StateIn&);
  };
 
  struct DummySavableState : virtual public SavableState {
  public:
    typedef DummySavableState this_type;
 
    DummySavableState();
    DummySavableState(StateIn& si);
    void save_data_state(StateOut&);
 
  private:
    static ClassDesc class_desc_;
  };
 
// end of addgroup State
 
}
 
#endif
 
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// mode: c++
// c-file-style: "CLJ"
// End: