PointerClass.hpp

Go to the documentation of this file.

/*----------------------------------------------------------------------------*/
/*                                                                            */
/* Copyright (c) 1995, 2004 IBM Corporation. All rights reserved.             */
/* Copyright (c) 2005-2009 Rexx Language Association. All rights reserved.    */
/*                                                                            */
/* This program and the accompanying materials are made available under       */
/* the terms of the Common Public License v1.0 which accompanies this         */
/* distribution. A copy is also available at the following address:           */
/* http://www.ibm.com/developerworks/oss/CPLv1.0.htm                          */
/*                                                                            */
/* Redistribution and use in source and binary forms, with or                 */
/* without modification, are permitted provided that the following            */
/* conditions are met:                                                        */
/*                                                                            */
/* Redistributions of source code must retain the above copyright             */
/* notice, this list of conditions and the following disclaimer.              */
/* Redistributions in binary form must reproduce the above copyright          */
/* notice, this list of conditions and the following disclaimer in            */
/* the documentation and/or other materials provided with the distribution.   */
/*                                                                            */
/* Neither the name of Rexx Language Association nor the names                */
/* of its contributors may be used to endorse or promote products             */
/* derived from this software without specific prior written permission.      */
/*                                                                            */
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS        */
/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT          */
/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS          */
/* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT   */
/* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,      */
/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED   */
/* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,        */
/* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY     */
/* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING    */
/* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS         */
/* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.               */
/*                                                                            */
/*----------------------------------------------------------------------------*/
/******************************************************************************/
/* REXX Kernel                                                RexxPointer.hpp */
/*                                                                            */
/* Primitive Pointer Class Definitions                                        */
/*                                                                            */
/******************************************************************************/
#ifndef Included_RexxPointer
#define Included_RexxPointer
 
#include "ObjectClass.hpp"
 
class RexxPointer : public RexxObject
{
public:
    inline void *operator new(size_t, void *ptr) { return ptr; }
    inline void  operator delete(void *, void *) { ; }
    void *operator new(size_t);
    inline void  operator delete(void *) { ; }
 
    inline RexxPointer() { pointerData = NULL; };
    inline RexxPointer(void *ptr)  { pointerData = ptr; };
    inline RexxPointer(RESTORETYPE restoreType) { ; };
    inline void *pointer() { return pointerData; }
 
    RexxObject  *equal(RexxObject *);
    RexxObject  *notEqual(RexxObject *other);
 
    RexxObject  *isNull();
    virtual HashCode getHashValue();
    virtual RexxString *stringValue();
 
    RexxObject *newRexx(RexxObject **args, size_t argc, size_t named_argc);
 
    static void createInstance();
 
    static RexxClass *classInstance;   // singleton class instance
    static RexxPointer *nullPointer;  // single version of a null pointer
 
protected:
    void *pointerData;               /* actual pointer value              */
};
 
 
inline RexxPointer *new_pointer(void *p)
{
 
    return new RexxPointer(p);
}
#endif