Qt Toolkit - qgdict.h include file

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# qgdict.h

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

    /****************************************************************************
    ** $Id: qt/src/tools/qgdict.h   2.3.7   edited 2001-01-26 $
    **
    ** Definition of QGDict and QGDictIterator classes
    **
    ** Created : 920529
    **
    ** 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 QGDICT_H
    #define QGDICT_H

    #ifndef QT_H
    #include "qcollection.h"
    #include "qstring.h"
    #endif // QT_H

    class QGDictIterator;
    class QGDItList;

    class QBaseBucket                               // internal dict node
    {
    public:
        QCollection::Item    getData()                      { return data; }
        QCollection::Item    setData( QCollection::Item d ) { return data = d; }
        QBaseBucket         *getNext()                      { return next; }
        void                 setNext( QBaseBucket *n)       { next = n; }
    protected:
        QBaseBucket( QCollection::Item d, QBaseBucket *n ) : data(d), next(n) {}
        QCollection::Item    data;
        QBaseBucket         *next;
    };

    class QStringBucket : public QBaseBucket
    {
    public:
        QStringBucket( const QString &k, QCollection::Item d, QBaseBucket *n )
            : QBaseBucket(d,n), key(k)              {}
        const QString  &getKey() const              { return key; }
    private:
        QString         key;
    };

    class QAsciiBucket : public QBaseBucket
    {
    public:
        QAsciiBucket( const char *k, QCollection::Item d, QBaseBucket *n )
            : QBaseBucket(d,n), key(k) {}
        const char *getKey() const { return key; }
    private:
        const char *key;
    };

    class QIntBucket : public QBaseBucket
    {
    public:
        QIntBucket( long k, QCollection::Item d, QBaseBucket *n )
            : QBaseBucket(d,n), key(k) {}
        long  getKey() const { return key; }
    private:
        long  key;
    };

    class QPtrBucket : public QBaseBucket
    {
    public:
        QPtrBucket( void *k, QCollection::Item d, QBaseBucket *n )
            : QBaseBucket(d,n), key(k) {}
        void *getKey() const { return key; }
    private:
        void *key;
    };

    class Q_EXPORT QGDict : public QCollection      // generic dictionary class
    {
    public:
        uint        count() const   { return numItems; }
        uint        size()  const   { return vlen; }
        QCollection::Item look_string( const QString& key, QCollection::Item,
                                       int );
        QCollection::Item look_ascii( const char *key, QCollection::Item, int );
        QCollection::Item look_int( long key, QCollection::Item, int );
        QCollection::Item look_ptr( void *key, QCollection::Item, int );
    #ifndef QT_NO_DATASTREAM
        QDataStream &read( QDataStream & );
        QDataStream &write( QDataStream & ) const;
    #endif
    protected:
        enum KeyType { StringKey, AsciiKey, IntKey, PtrKey };

        QGDict( uint len, KeyType kt, bool cs, bool ck );
        QGDict( const QGDict & );
       ~QGDict();

        QGDict     &operator=( const QGDict & );

        bool        remove_string( const QString &key, QCollection::Item item=0 );
        bool        remove_ascii( const char *key, QCollection::Item item=0 );
        bool        remove_int( long key, QCollection::Item item=0 );
        bool        remove_ptr( void *key, QCollection::Item item=0 );
        QCollection::Item take_string( const QString &key );
        QCollection::Item take_ascii( const char *key );
        QCollection::Item take_int( long key );
        QCollection::Item take_ptr( void *key );

        void        clear();
        void        resize( uint );

        int         hashKeyString( const QString & );
        int         hashKeyAscii( const char * );

        void        statistics() const;

    #ifndef QT_NO_DATASTREAM
        virtual QDataStream &read( QDataStream &, QCollection::Item & );
        virtual QDataStream &write( QDataStream &, QCollection::Item ) const;
    #endif
    private:
        QBaseBucket **vec;
        uint        vlen;
        uint        numItems;
        uint        keytype : 2;
        uint        cases   : 1;
        uint        copyk   : 1;
        QGDItList  *iterators;
        void           unlink_common( int, QBaseBucket *, QBaseBucket * );
        QStringBucket *unlink_string( const QString &,
                                      QCollection::Item item = 0 );
        QAsciiBucket  *unlink_ascii( const char *, QCollection::Item item = 0 );
        QIntBucket    *unlink_int( long, QCollection::Item item = 0 );
        QPtrBucket    *unlink_ptr( void *, QCollection::Item item = 0 );
        void        init( uint, KeyType, bool, bool );
        friend class QGDictIterator;
    };

    class Q_EXPORT QGDictIterator                   // generic dictionary iterator
    {
    friend class QGDict;
    public:
        QGDictIterator( const QGDict & );
        QGDictIterator( const QGDictIterator & );
        QGDictIterator &operator=( const QGDictIterator & );
       ~QGDictIterator();

        QCollection::Item toFirst();

        QCollection::Item get()          const;
        QString           getKeyString() const;
        const char       *getKeyAscii()  const;
        long              getKeyInt()    const;
        void             *getKeyPtr()    const;

        QCollection::Item operator()();
        QCollection::Item operator++();
        QCollection::Item operator+=(uint);

    protected:
        QGDict           *dict;

    private:
        QBaseBucket      *curNode;
        uint              curIndex;
    };

    inline QCollection::Item QGDictIterator::get() const
    {
        return curNode ? curNode->getData() : 0;
    }

    inline QString QGDictIterator::getKeyString() const
    {
        return curNode ? ((QStringBucket*)curNode)->getKey() : QString::null;
    }

    inline const char *QGDictIterator::getKeyAscii() const
    {
        return curNode ? ((QAsciiBucket*)curNode)->getKey() : 0;
    }

    inline long QGDictIterator::getKeyInt() const
    {
        return curNode ? ((QIntBucket*)curNode)->getKey() : 0;
    }

    inline void *QGDictIterator::getKeyPtr() const
    {
        return curNode ? ((QPtrBucket*)curNode)->getKey() : 0;
    }

    #endif // QGDICT_H