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1/****************************************************************************
2** $Id$
3**
4** Definition of QCache template class
5**
6** Created : 950209
7**
8** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
9**
10** This file is part of the tools module of the Qt GUI Toolkit.
11**
12** This file may be distributed under the terms of the Q Public License
13** as defined by Trolltech AS of Norway and appearing in the file
14** LICENSE.QPL included in the packaging of this file.
15**
16** This file may be distributed and/or modified under the terms of the
17** GNU General Public License version 2 as published by the Free Software
18** Foundation and appearing in the file LICENSE.GPL included in the
19** packaging of this file.
20**
21** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
22** licenses may use this file in accordance with the Qt Commercial License
23** Agreement provided with the Software.
24**
25** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
26** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
27**
28** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
29** information about Qt Commercial License Agreements.
30** See http://www.trolltech.com/qpl/ for QPL licensing information.
31** See http://www.trolltech.com/gpl/ for GPL licensing information.
32**
33** Contact info@trolltech.com if any conditions of this licensing are
34** not clear to you.
35**
36**********************************************************************/
37
38#ifndef QCACHE_H
39#define QCACHE_H
40
41#ifndef QT_H
42#include "qgcache.h"
43#endif // QT_H
44
45template<class type>
46class QCache
47#ifdef Q_QDOC
48 : public QPtrCollection
49#else
50 : public QGCache
51#endif
52{
53public:
54 QCache( const QCache<type> &c ) : QGCache(c) {}
55 QCache( int maxCost=100, int size=17, bool caseSensitive=TRUE )
56 : QGCache( maxCost, size, StringKey, caseSensitive, FALSE ) {}
57 ~QCache() { clear(); }
58 QCache<type> &operator=( const QCache<type> &c )
59 { return (QCache<type>&)QGCache::operator=(c); }
60 int maxCost() const { return QGCache::maxCost(); }
61 int totalCost() const { return QGCache::totalCost(); }
62 void setMaxCost( int m ) { QGCache::setMaxCost(m); }
63 uint count() const { return QGCache::count(); }
64 uint size() const { return QGCache::size(); }
65 bool isEmpty() const { return QGCache::count() == 0; }
66 void clear() { QGCache::clear(); }
67 bool insert( const QString &k, const type *d, int c=1, int p=0 )
68 { return QGCache::insert_string(k,(Item)d,c,p);}
69 bool remove( const QString &k )
70 { return QGCache::remove_string(k); }
71 type *take( const QString &k )
72 { return (type *)QGCache::take_string(k); }
73 type *find( const QString &k, bool ref=TRUE ) const
74 { return (type *)QGCache::find_string(k,ref);}
75 type *operator[]( const QString &k ) const
76 { return (type *)QGCache::find_string(k);}
77 void statistics() const { QGCache::statistics(); }
78private:
79 void deleteItem( Item d );
80};
81
82#if !defined(Q_BROKEN_TEMPLATE_SPECIALIZATION)
83template<> inline void QCache<void>::deleteItem( QPtrCollection::Item )
84{
85}
86#endif
87
88template<class type> inline void QCache<type>::deleteItem( QPtrCollection::Item d )
89{
90 if ( del_item ) delete (type *)d;
91}
92
93template<class type>
94class QCacheIterator : public QGCacheIterator
95{
96public:
97 QCacheIterator( const QCache<type> &c ):QGCacheIterator((QGCache &)c) {}
98 QCacheIterator( const QCacheIterator<type> &ci)
99 : QGCacheIterator( (QGCacheIterator &)ci ) {}
100 QCacheIterator<type> &operator=(const QCacheIterator<type>&ci)
101 { return ( QCacheIterator<type>&)QGCacheIterator::operator=( ci ); }
102 uint count() const { return QGCacheIterator::count(); }
103 bool isEmpty() const { return QGCacheIterator::count() == 0; }
104 bool atFirst() const { return QGCacheIterator::atFirst(); }
105 bool atLast() const { return QGCacheIterator::atLast(); }
106 type *toFirst() { return (type *)QGCacheIterator::toFirst(); }
107 type *toLast() { return (type *)QGCacheIterator::toLast(); }
108 operator type *() const { return (type *)QGCacheIterator::get(); }
109 type *current() const { return (type *)QGCacheIterator::get(); }
110 QString currentKey() const{ return QGCacheIterator::getKeyString(); }
111 type *operator()() { return (type *)QGCacheIterator::operator()();}
112 type *operator++() { return (type *)QGCacheIterator::operator++(); }
113 type *operator+=(uint j) { return (type *)QGCacheIterator::operator+=(j);}
114 type *operator--() { return (type *)QGCacheIterator::operator--(); }
115 type *operator-=(uint j) { return (type *)QGCacheIterator::operator-=(j);}
116};
117
118#endif // QCACHE_H