src/hbcore/core/hbhash_p.cpp
changeset 28 b7da29130b0e
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23:e6ad4ef83b23 28:b7da29130b0e
       
     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (developer.feedback@nokia.com)
       
     6 **
       
     7 ** This file is part of the HbCore module of the UI Extensions for Mobile.
       
     8 **
       
     9 ** GNU Lesser General Public License Usage
       
    10 ** This file may be used under the terms of the GNU Lesser General Public
       
    11 ** License version 2.1 as published by the Free Software Foundation and
       
    12 ** appearing in the file LICENSE.LGPL included in the packaging of this file.
       
    13 ** Please review the following information to ensure the GNU Lesser General
       
    14 ** Public License version 2.1 requirements will be met:
       
    15 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
    16 **
       
    17 ** In addition, as a special exception, Nokia gives you certain additional
       
    18 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    19 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    20 **
       
    21 ** If you have questions regarding the use of this file, please contact
       
    22 ** Nokia at developer.feedback@nokia.com.
       
    23 **
       
    24 ****************************************************************************/
       
    25 
       
    26 #include "hbhash_p.h"
       
    27 
       
    28 quint32 hash(const QChar *data, int size)
       
    29 {
       
    30     quint32 hashValue = 0;
       
    31     while (size--) {
       
    32         hashValue = data->unicode() + (hashValue << 6) + (hashValue << 16) - hashValue;
       
    33         ++data;
       
    34     }
       
    35     return hashValue;
       
    36 }
       
    37 
       
    38 /*!
       
    39     return hash value for \a key.
       
    40 */
       
    41 quint32 hbHash(const QStringRef &key)
       
    42 {
       
    43     return hash(key.unicode(), key.size());
       
    44 }
       
    45 
       
    46 quint32 hbHash(const QString &key)
       
    47 {
       
    48     return hash(key.unicode(), key.size());
       
    49 }
       
    50