/*****************************************************************************

  The following code is derived, directly or indirectly, from the SystemC
  source code Copyright (c) 1996-2005 by all Contributors.
  All Rights reserved.

  The contents of this file are subject to the restrictions and limitations
  set forth in the SystemC Open Source License Version 2.4 (the "License");
  You may not use this file except in compliance with such restrictions and
  limitations. You may obtain instructions on how to receive a copy of the
  License at http://www.systemc.org/. Software distributed by Contributors
  under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
  ANY KIND, either express or implied. See the License for the specific
  language governing rights and limitations under the License.

 *****************************************************************************/

/*****************************************************************************

  sc_fxval_observer.h - 

  Original Author: Martin Janssen, Synopsys, Inc.

 *****************************************************************************/

/*****************************************************************************

  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
  changes you are making here.

      Name, Affiliation, Date:
  Description of Modification:

 *****************************************************************************/

#ifndef SC_FXVAL_OBSERVER_H
#define SC_FXVAL_OBSERVER_H


#include "sysc/datatypes/fx/sc_fxdefs.h"


namespace sc_dt
{

// classes defined in this module
class sc_fxval_observer;
class sc_fxval_fast_observer;

// forward class declarations
class sc_fxval;
class sc_fxval_fast;


#ifdef SC_ENABLE_OBSERVERS

#define SC_FXVAL_OBSERVER_CONSTRUCT_(object)                                  \
    SC_OBSERVER_(object,sc_fxval_observer*,construct)
#define SC_FXVAL_OBSERVER_DESTRUCT_(object)                                   \
    SC_OBSERVER_(object,sc_fxval_observer*,destruct)
#define SC_FXVAL_OBSERVER_READ_(object)                                       \
    SC_OBSERVER_(object,sc_fxval_observer*,read)
#define SC_FXVAL_OBSERVER_WRITE_(object)                                      \
    SC_OBSERVER_(object,sc_fxval_observer*,write)
#define SC_FXVAL_OBSERVER_DEFAULT_                                            \
    SC_OBSERVER_DEFAULT_(sc_fxval_observer)

#define SC_FXVAL_FAST_OBSERVER_CONSTRUCT_(object)                             \
    SC_OBSERVER_(object,sc_fxval_fast_observer*,construct)
#define SC_FXVAL_FAST_OBSERVER_DESTRUCT_(object)                              \
    SC_OBSERVER_(object,sc_fxval_fast_observer*,destruct)
#define SC_FXVAL_FAST_OBSERVER_READ_(object)                                  \
    SC_OBSERVER_(object,sc_fxval_fast_observer*,read)
#define SC_FXVAL_FAST_OBSERVER_WRITE_(object)                                 \
    SC_OBSERVER_(object,sc_fxval_fast_observer*,write)
#define SC_FXVAL_FAST_OBSERVER_DEFAULT_                                       \
    SC_OBSERVER_DEFAULT_(sc_fxval_fast_observer)

#else

#define SC_FXVAL_OBSERVER_CONSTRUCT_(object)
#define SC_FXVAL_OBSERVER_DESTRUCT_(object)
#define SC_FXVAL_OBSERVER_READ_(object)
#define SC_FXVAL_OBSERVER_WRITE_(object)
#define SC_FXVAL_OBSERVER_DEFAULT_

#define SC_FXVAL_FAST_OBSERVER_CONSTRUCT_(object)
#define SC_FXVAL_FAST_OBSERVER_DESTRUCT_(object)
#define SC_FXVAL_FAST_OBSERVER_READ_(object)
#define SC_FXVAL_FAST_OBSERVER_WRITE_(object)
#define SC_FXVAL_FAST_OBSERVER_DEFAULT_

#endif


// ----------------------------------------------------------------------------
//  CLASS : sc_fxval_observer
//
//  Abstract base class for fixed-point value type observers;
//  arbitrary precision.
// ----------------------------------------------------------------------------

class sc_fxval_observer
{

protected:
    
    sc_fxval_observer() {}
    virtual ~sc_fxval_observer() {}

public:

    virtual void construct( const sc_fxval& );
    virtual void  destruct( const sc_fxval& );
    virtual void      read( const sc_fxval& );
    virtual void     write( const sc_fxval& );

    static sc_fxval_observer* (*default_observer) ();

};


// ----------------------------------------------------------------------------
//  CLASS : sc_fxval_fast_observer
//
//  Abstract base class for fixed-point value type observers;
//  limited precision.
// ----------------------------------------------------------------------------

class sc_fxval_fast_observer
{

protected:
    
    sc_fxval_fast_observer() {}
    virtual ~sc_fxval_fast_observer() {}

public:

    virtual void construct( const sc_fxval_fast& );
    virtual void  destruct( const sc_fxval_fast& );
    virtual void      read( const sc_fxval_fast& );
    virtual void     write( const sc_fxval_fast& );

    static sc_fxval_fast_observer* (*default_observer) ();

};


// IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII

// ----------------------------------------------------------------------------
//  CLASS : sc_fxval_observer
//
//  Abstract base class for fixed-point value type observers;
//  arbitrary precision.
// ----------------------------------------------------------------------------

inline
void
sc_fxval_observer::construct( const sc_fxval& )
{}

inline
void
sc_fxval_observer::destruct( const sc_fxval& )
{}

inline
void
sc_fxval_observer::read( const sc_fxval& )
{}

inline
void
sc_fxval_observer::write( const sc_fxval& )
{}


// ----------------------------------------------------------------------------
//  CLASS : sc_fxval_fast_observer
//
//  Abstract base class for fixed-point value type observers;
//  limited precision.
// ----------------------------------------------------------------------------

inline
void
sc_fxval_fast_observer::construct( const sc_fxval_fast& )
{}

inline
void
sc_fxval_fast_observer::destruct( const sc_fxval_fast& )
{}

inline
void
sc_fxval_fast_observer::read( const sc_fxval_fast& )
{}

inline
void
sc_fxval_fast_observer::write( const sc_fxval_fast& )
{}

} // namespace sc_dt


#endif

// Taf!
