Release-1.3.5-20031215

1 files changed, 128 insertions, 0 deletions

diff --git a/qtools/qgcache.h b/qtools/qgcache.h
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+/****************************************************************************
+** 
+**
+** Definition of QGCache and QGCacheIterator classes
+**
+** Created : 950208
+**
+** 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 QGCACHE_H
+#define QGCACHE_H
+
+#ifndef QT_H
+#include "qcollection.h"
+#include "qglist.h"
+#include "qgdict.h"
+#endif // QT_H
+
+
+class QCList;					// internal classes
+class QCListIt;
+class QCDict;
+
+
+class Q_EXPORT QGCache : public QCollection	// generic LRU cache
+{
+friend class QGCacheIterator;
+protected:
+    enum KeyType { StringKey, AsciiKey, IntKey, PtrKey };
+      // identical to QGDict's, but PtrKey is not used at the moment
+
+    QGCache( int maxCost, uint size, KeyType kt, bool caseSensitive,
+	     bool copyKeys );
+    QGCache( const QGCache & );			// not allowed, calls fatal()
+   ~QGCache();
+    QGCache &operator=( const QGCache & );	// not allowed, calls fatal()
+
+    uint    count()	const	{ return ((QGDict*)dict)->count(); }
+    uint    size()	const	{ return ((QGDict*)dict)->size(); }
+    int	    maxCost()	const	{ return mCost; }
+    int	    totalCost() const	{ return tCost; }
+    void    setMaxCost( int maxCost );
+    void    clear();
+
+    bool    insert_string( const QString &key, QCollection::Item,
+			   int cost, int priority );
+    bool    insert_other( const char *key, QCollection::Item,
+			  int cost, int priority );
+    bool    remove_string( const QString &key );
+    bool    remove_other( const char *key );
+    QCollection::Item take_string( const QString &key );
+    QCollection::Item take_other( const char *key );
+
+    QCollection::Item find_string( const QString &key, bool ref=TRUE ) const;
+    QCollection::Item find_other( const char *key, bool ref=TRUE ) const;
+
+    void    statistics() const;
+
+private:
+    bool    makeRoomFor( int cost, int priority = -1 );
+    KeyType keytype;
+    QCList *lruList;
+    QCDict *dict;
+    int	    mCost;
+    int	    tCost;
+    bool    copyk;
+};
+
+
+class Q_EXPORT QGCacheIterator			// generic cache iterator
+{
+protected:
+    QGCacheIterator( const QGCache & );
+    QGCacheIterator( const QGCacheIterator & );
+   ~QGCacheIterator();
+    QGCacheIterator &operator=( const QGCacheIterator & );
+
+    uint	      count()   const;
+    bool	      atFirst() const;
+    bool	      atLast()  const;
+    QCollection::Item toFirst();
+    QCollection::Item toLast();
+
+    QCollection::Item get() const;
+    QString	      getKeyString() const;
+    const char       *getKeyAscii()  const;
+    long	      getKeyInt()    const;
+
+    QCollection::Item operator()();
+    QCollection::Item operator++();
+    QCollection::Item operator+=( uint );
+    QCollection::Item operator--();
+    QCollection::Item operator-=( uint );
+
+protected:
+    QCListIt *it;				// iterator on cache list
+};
+
+
+#endif // QGCACHE_H