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/****************************************************************************
** $Id: qt/src/tools/qsmartptr.h 2.3.1 edited 2001-01-26 $
**
** Definition of QSmartPtr class
**
** Created : 990128
**
** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
**
** This file is part of the tools module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
** information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifndef QSMARTPTR_H
#define QSMARTPTR_H
#ifndef QT_H
#include "qshared.h"
#endif // QT_H
#if defined(QT_CLEAN_NAMESPACE) && (QT_CLEAN_NAMESPACE >= 220)
#error "QSmartPtr will be removed in Qt 3.0"
#endif
#if defined(_CC_GNU_)
#warning "QSmartPtr will be removed in Qt 3.0"
#endif
//
// W A R N I N G
// -------------
//
// This template was added to the public releases by mistake. It has
// never been mentioned in any Qt documentation, has never been
// announced, and will go away again in Qt 3.0.
//
// We mean it.
//
// If you need QSmartPtr, write to qt-bugs@troll.no and we'll give you
// a BSD-licensed copy of it.
//
//
template< class T >
class QSmartPtrPrivate : public QShared
{
public:
QSmartPtrPrivate( T* t ) : QShared() { addr = t; }
~QSmartPtrPrivate() { delete addr; }
T* addr;
};
template< class T >
struct QSmartPtr
{
public:
QSmartPtr() { ptr = new QSmartPtrPrivate<T>( 0 ); }
QSmartPtr( T* t ) { ptr = new QSmartPtrPrivate<T>( t ); }
QSmartPtr( const QSmartPtr& p ) { ptr = p.ptr; ptr->ref(); }
~QSmartPtr() { if ( ptr->deref() ) delete ptr; }
QSmartPtr<T>& operator= ( const QSmartPtr<T>& p ) {
if ( ptr->deref() ) delete ptr;
ptr = p.ptr; ptr->ref();
return *this;
}
QSmartPtr<T>& operator= ( T* p ) {
if ( ptr->deref() ) delete ptr;
ptr = new QSmartPtrPrivate<T>( p );
return *this;
}
bool operator== ( const QSmartPtr<T>& p ) const
{ return ( ptr->addr == p.ptr->addr ); }
bool operator!= ( const QSmartPtr<T>& p ) const
{ return ( ptr->addr != p.ptr->addr ); }
bool operator== ( const T* p ) const { return ( ptr->addr == p ); }
bool operator!= ( const T* p ) const { return ( ptr->addr != p ); }
bool operator!() const { return ( ptr->addr == 0 ); }
operator bool() const { return ( ptr->addr != 0 ); }
operator T*() { return ptr->addr; }
operator const T*() const { return ptr->addr; }
const T& operator*() const { return *(ptr->addr); }
T& operator*() { return *(ptr->addr); }
const T* operator->() const { return ptr->addr; }
T* operator->() { return ptr->addr; }
private:
QSmartPtrPrivate<T>* ptr;
};
#endif
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