source: NonGTP/Xerces/xercesc/util/Janitor.c @ 188

/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999-2000 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xerces" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache\@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
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 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation, and was
 * originally based on software copyright (c) 1999, International
 * Business Machines, Inc., http://www.ibm.com .  For more information
 * on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

/**
 * $Log: Janitor.c,v $
 * Revision 1.5  2003/11/06 19:28:11  knoaman
 * PSVI support for annotations.
 *
 * Revision 1.4  2003/05/21 03:34:52  jberry
 * Cast away CodeWarrior complaint of casting away const if we're holding a const obj
 *
 * Revision 1.3  2003/05/15 19:04:35  knoaman
 * Partial implementation of the configurable memory manager.
 *
 * Revision 1.2  2002/11/04 15:22:04  tng
 * C++ Namespace Support.
 *
 * Revision 1.1.1.1  2002/02/01 22:22:10  peiyongz
 * sane_include
 *
 * Revision 1.6  2000/10/13 22:45:11  andyh
 * Complete removal of ArrayJanitory::operator->().  Was just commented out earlier.
 *
 * Revision 1.5  2000/10/10 23:52:10  andyh
 * From Janitor, remove the addition that is having compile problems in MSVC.
 *
 * Revision 1.4  2000/10/09 18:32:31  jberry
 * Add some auto_ptr functionality to allow modification of monitored
 * pointer value. This eases use of Janitor in some situations.
 *
 * Revision 1.3  2000/03/02 19:54:40  roddey
 * This checkin includes many changes done while waiting for the
 * 1.1.0 code to be finished. I can't list them all here, but a list is
 * available elsewhere.
 *
 * Revision 1.2  2000/02/06 07:48:02  rahulj
 * Year 2K copyright swat.
 *
 * Revision 1.1.1.1  1999/11/09 01:04:26  twl
 * Initial checkin
 *
 * Revision 1.2  1999/11/08 20:45:08  rahul
 * Swat for adding in Product name and CVS comment log variable.
 *
 */


// ---------------------------------------------------------------------------
//  Includes
// ---------------------------------------------------------------------------
#if defined(XERCES_TMPLSINC)
#include <xercesc/util/Janitor.hpp>
#endif

XERCES_CPP_NAMESPACE_BEGIN

// ---------------------------------------------------------------------------
//  Janitor: Constructors and Destructor
// ---------------------------------------------------------------------------
template <class T> Janitor<T>::Janitor(T* const toDelete) :
    fData(toDelete)
{
}


template <class T> Janitor<T>::~Janitor()
{
    reset();
}


// ---------------------------------------------------------------------------
//  Janitor: Public, non-virtual methods
// ---------------------------------------------------------------------------
template <class T> void
Janitor<T>::orphan()
{
   release();
}


template <class T> T&
Janitor<T>::operator*() const
{
        return *fData;
}


template <class T> T*
Janitor<T>::operator->() const
{
        return fData;
}


template <class T> T*
Janitor<T>::get() const
{
        return fData;
}


template <class T> T*
Janitor<T>::release()
{
        T* p = fData;
        fData = 0;
        return p;
}


template <class T> void Janitor<T>::reset(T* p)
{
    if (fData)
        delete fData;

    fData = p;
}

template <class T> bool Janitor<T>::isDataNull()
{
    return (fData == 0);
}


// -----------------------------------------------------------------------
//  ArrayJanitor: Constructors and Destructor
// -----------------------------------------------------------------------
template <class T> ArrayJanitor<T>::ArrayJanitor(T* const toDelete) :
    fData(toDelete)
    , fMemoryManager(0)
{
}

template <class T>
ArrayJanitor<T>::ArrayJanitor(T* const toDelete,
                              MemoryManager* const manager) :
    fData(toDelete)
    , fMemoryManager(manager)
{
}


template <class T> ArrayJanitor<T>::~ArrayJanitor()
{
        reset();
}


// -----------------------------------------------------------------------
//  ArrayJanitor: Public, non-virtual methods
// -----------------------------------------------------------------------
template <class T> void
ArrayJanitor<T>::orphan()
{
   release();
}


//      Look, Ma! No hands! Don't call this with null data!
template <class T> T&
ArrayJanitor<T>::operator[](int index) const
{
        //      TODO: Add appropriate exception
        return fData[index];
}


template <class T> T*
ArrayJanitor<T>::get() const
{
        return fData;
}


template <class T> T*
ArrayJanitor<T>::release()
{
        T* p = fData;
        fData = 0;
        return p;
}


template <class T> void
ArrayJanitor<T>::reset(T* p)
{
        if (fData) {

                if (fMemoryManager)
            fMemoryManager->deallocate((void*)fData);
        else
            delete [] fData;
    }

        fData = p;
    fMemoryManager = 0;
}

template <class T> void
ArrayJanitor<T>::reset(T* p, MemoryManager* manager)
{
        if (fData) {

                if (fMemoryManager)
            fMemoryManager->deallocate((void*)fData);
        else
            delete [] fData;
    }

        fData = p;
    fMemoryManager = manager;
}

XERCES_CPP_NAMESPACE_END