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q3gdict.h

/****************************************************************************
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the Qt3Support module of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at sales@trolltech.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#ifndef Q3GDICT_H
#define Q3GDICT_H

#include <Qt3Support/q3ptrcollection.h>
#include <QtCore/qstring.h>

QT_BEGIN_HEADER

QT_MODULE(Qt3SupportLight)

class Q3GDictIterator;
class Q3GDItList;


class Q3BaseBucket                        // internal dict node
{
public:
    Q3PtrCollection::Item      getData()              { return data; }
    Q3PtrCollection::Item      setData( Q3PtrCollection::Item d ) { return data = d; }
    Q3BaseBucket        *getNext()              { return next; }
    void           setNext( Q3BaseBucket *n)    { next = n; }
protected:
    Q3BaseBucket( Q3PtrCollection::Item d, Q3BaseBucket *n ) : data(d), next(n) {}
    Q3PtrCollection::Item      data;
    Q3BaseBucket        *next;
};

class Q3StringBucket : public Q3BaseBucket
{
public:
    Q3StringBucket( const QString &k, Q3PtrCollection::Item d, Q3BaseBucket *n )
      : Q3BaseBucket(d,n), key(k)         {}
    const QString  &getKey() const        { return key; }
private:
    QString     key;
};

class Q3AsciiBucket : public Q3BaseBucket
{
public:
    Q3AsciiBucket( const char *k, Q3PtrCollection::Item d, Q3BaseBucket *n )
      : Q3BaseBucket(d,n), key(k) {}
    const char *getKey() const { return key; }
private:
    const char *key;
};

class Q3IntBucket : public Q3BaseBucket
{
public:
    Q3IntBucket( long k, Q3PtrCollection::Item d, Q3BaseBucket *n )
      : Q3BaseBucket(d,n), key(k) {}
    long  getKey() const { return key; }
private:
    long  key;
};

class Q3PtrBucket : public Q3BaseBucket
{
public:
    Q3PtrBucket( void *k, Q3PtrCollection::Item d, Q3BaseBucket *n )
      : Q3BaseBucket(d,n), key(k) {}
    void *getKey() const { return key; }
private:
    void *key;
};


00092 class Q_COMPAT_EXPORT Q3GDict : public Q3PtrCollection      // generic dictionary class
{
public:
00095     uint    count() const     { return numItems; }
00096     uint    size()      const { return vlen; }
    Q3PtrCollection::Item look_string( const QString& key, Q3PtrCollection::Item,
                           int );
    Q3PtrCollection::Item look_ascii( const char *key, Q3PtrCollection::Item, int );
    Q3PtrCollection::Item look_int( long key, Q3PtrCollection::Item, int );
    Q3PtrCollection::Item look_ptr( void *key, Q3PtrCollection::Item, int );
#ifndef QT_NO_DATASTREAM
    QDataStream &read( QDataStream & );
    QDataStream &write( QDataStream & ) const;
#endif
protected:
    enum KeyType { StringKey, AsciiKey, IntKey, PtrKey };

    Q3GDict( uint len, KeyType kt, bool cs, bool ck );
    Q3GDict( const Q3GDict & );
   ~Q3GDict();

    Q3GDict     &operator=( const Q3GDict & );

    bool    remove_string( const QString &key, Q3PtrCollection::Item item=0 );
    bool    remove_ascii( const char *key, Q3PtrCollection::Item item=0 );
    bool    remove_int( long key, Q3PtrCollection::Item item=0 );
    bool    remove_ptr( void *key, Q3PtrCollection::Item item=0 );
    Q3PtrCollection::Item take_string( const QString &key );
    Q3PtrCollection::Item take_ascii( const char *key );
    Q3PtrCollection::Item take_int( long key );
    Q3PtrCollection::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 &, Q3PtrCollection::Item & );
    virtual QDataStream &write( QDataStream &, Q3PtrCollection::Item ) const;
#endif
private:
    Q3BaseBucket **vec;
    uint    vlen;
    uint    numItems;
    uint    keytype     : 2;
    uint    cases : 1;
    uint    copyk : 1;
    Q3GDItList  *iterators;
    void       unlink_common( int, Q3BaseBucket *, Q3BaseBucket * );
    Q3StringBucket *unlink_string( const QString &,
                          Q3PtrCollection::Item item = 0 );
    Q3AsciiBucket  *unlink_ascii( const char *, Q3PtrCollection::Item item = 0 );
    Q3IntBucket    *unlink_int( long, Q3PtrCollection::Item item = 0 );
    Q3PtrBucket    *unlink_ptr( void *, Q3PtrCollection::Item item = 0 );
    void    init( uint, KeyType, bool, bool );
    friend class Q3GDictIterator;
};


00155 class Q_COMPAT_EXPORT Q3GDictIterator                 // generic dictionary iterator
{
friend class Q3GDict;
public:
    Q3GDictIterator( const Q3GDict & );
    Q3GDictIterator( const Q3GDictIterator & );
    Q3GDictIterator &operator=( const Q3GDictIterator & );
   ~Q3GDictIterator();

    Q3PtrCollection::Item toFirst();

    Q3PtrCollection::Item get()          const;
    QString       getKeyString() const;
    const char         *getKeyAscii()  const;
    long          getKeyInt()    const;
    void         *getKeyPtr()    const;

    Q3PtrCollection::Item operator()();
    Q3PtrCollection::Item operator++();
    Q3PtrCollection::Item operator+=(uint);

protected:
    Q3GDict      *dict;

private:
    Q3BaseBucket      *curNode;
    uint          curIndex;
};

inline Q3PtrCollection::Item Q3GDictIterator::get() const
{
    return curNode ? curNode->getData() : 0;
}

inline QString Q3GDictIterator::getKeyString() const
{
    return curNode ? ((Q3StringBucket*)curNode)->getKey() : QString();
}

inline const char *Q3GDictIterator::getKeyAscii() const
{
    return curNode ? ((Q3AsciiBucket*)curNode)->getKey() : 0;
}

inline long Q3GDictIterator::getKeyInt() const
{
    return curNode ? ((Q3IntBucket*)curNode)->getKey() : 0;
}

inline void *Q3GDictIterator::getKeyPtr() const
{
    return curNode ? ((Q3PtrBucket*)curNode)->getKey() : 0;
}

QT_END_HEADER

#endif // Q3GDICT_H

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