qcache.h Include File

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# qcache.h

This is the verbatim text of the qcache.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $Id: qt/qcache.h   3.2.3   edited May 13 09:08 $
    **
    ** Definition of QCache template class
    **
    ** Created : 950209
    **
    ** 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.
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    **********************************************************************/

    #ifndef QCACHE_H
    #define QCACHE_H

    #ifndef QT_H
    #include "qgcache.h"
    #endif // QT_H

    template<class type>
    class QCache
    #ifdef Q_QDOC
    	: public QPtrCollection
    #else
    	: public QGCache
    #endif
    {
    public:
        QCache( const QCache<type> &c ) : QGCache(c) {}
        QCache( int maxCost=100, int size=17, bool caseSensitive=TRUE )
    	: QGCache( maxCost, size, StringKey, caseSensitive, FALSE ) {}
       ~QCache()				{ clear(); }
        QCache<type> &operator=( const QCache<type> &c )
    			{ return (QCache<type>&)QGCache::operator=(c); }
        int	  maxCost()   const		{ return QGCache::maxCost(); }
        int	  totalCost() const		{ return QGCache::totalCost(); }
        void  setMaxCost( int m )		{ QGCache::setMaxCost(m); }
        uint  count()     const		{ return QGCache::count(); }
        uint  size()      const		{ return QGCache::size(); }
        bool  isEmpty()   const		{ return QGCache::count() == 0; }
        void  clear()			{ QGCache::clear(); }
        bool  insert( const QString &k, const type *d, int c=1, int p=0 )
    			{ return QGCache::insert_string(k,(Item)d,c,p);}
        bool  remove( const QString &k )
    			{ return QGCache::remove_string(k); }
        type *take( const QString &k )
    			{ return (type *)QGCache::take_string(k); }
        type *find( const QString &k, bool ref=TRUE ) const
    			{ return (type *)QGCache::find_string(k,ref);}
        type *operator[]( const QString &k ) const
    			{ return (type *)QGCache::find_string(k);}
        void  statistics() const	      { QGCache::statistics(); }
    private:
        void  deleteItem( Item d );
    };

    #if !defined(Q_BROKEN_TEMPLATE_SPECIALIZATION)
    template<> inline void QCache<void>::deleteItem( QPtrCollection::Item )
    {
    }
    #endif

    template<class type> inline void QCache<type>::deleteItem( QPtrCollection::Item d )
    {
        if ( del_item ) delete (type *)d;
    }

    template<class type>
    class QCacheIterator : public QGCacheIterator
    {
    public:
        QCacheIterator( const QCache<type> &c ):QGCacheIterator((QGCache &)c) {}
        QCacheIterator( const QCacheIterator<type> &ci)
    				: QGCacheIterator( (QGCacheIterator &)ci ) {}
        QCacheIterator<type> &operator=(const QCacheIterator<type>&ci)
    	{ return ( QCacheIterator<type>&)QGCacheIterator::operator=( ci ); }
        uint  count()   const     { return QGCacheIterator::count(); }
        bool  isEmpty() const     { return QGCacheIterator::count() == 0; }
        bool  atFirst() const     { return QGCacheIterator::atFirst(); }
        bool  atLast()  const     { return QGCacheIterator::atLast(); }
        type *toFirst()	      { return (type *)QGCacheIterator::toFirst(); }
        type *toLast()	      { return (type *)QGCacheIterator::toLast(); }
        operator type *() const   { return (type *)QGCacheIterator::get(); }
        type *current()   const   { return (type *)QGCacheIterator::get(); }
        QString currentKey() const{ return QGCacheIterator::getKeyString(); }
        type *operator()()	      { return (type *)QGCacheIterator::operator()();}
        type *operator++()	      { return (type *)QGCacheIterator::operator++(); }
        type *operator+=(uint j)  { return (type *)QGCacheIterator::operator+=(j);}
        type *operator--()	      { return (type *)QGCacheIterator::operator--(); }
        type *operator-=(uint j)  { return (type *)QGCacheIterator::operator-=(j);}
    };

    #endif // QCACHE_H