--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/declarative/qml/qbitfield_p.h	Tue Jul 06 15:10:48 2010 +0300
@@ -0,0 +1,165 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QBITFIELD_P_H
+#define QBITFIELD_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qglobal.h>
+
+QT_BEGIN_NAMESPACE
+
+class QBitField
+{
+public:
+    inline QBitField();
+    inline QBitField(const quint32 *, int bits);
+    inline QBitField(const QBitField &);
+    inline ~QBitField();
+
+    inline QBitField &operator=(const QBitField &);
+
+    inline quint32 size() const;
+    inline QBitField united(const QBitField &);
+    inline bool testBit(int) const;
+
+private:
+    quint32 bits:31;
+    quint32 *ownData;
+    const quint32 *data;
+};
+
+QBitField::QBitField()
+: bits(0), ownData(0), data(0)
+{
+}
+
+QBitField::QBitField(const quint32 *bitData, int bitCount)
+: bits((quint32)bitCount), ownData(0), data(bitData)
+{
+}
+
+QBitField::QBitField(const QBitField &other)
+: bits(other.bits), ownData(other.ownData), data(other.data)
+{
+    if (ownData) 
+        ++(*ownData);
+}
+
+QBitField::~QBitField()
+{
+    if (ownData) 
+        if(0 == --(*ownData)) delete [] ownData;
+}
+
+QBitField &QBitField::operator=(const QBitField &other)
+{
+    if (other.data == data)
+        return *this;
+
+    if (ownData) 
+        if(0 == --(*ownData)) delete [] ownData;
+
+    bits = other.bits;
+    ownData = other.ownData;
+    data = other.data;
+
+    if (ownData) 
+        ++(*ownData);
+
+    return *this;
+}
+
+inline quint32 QBitField::size() const
+{
+    return bits;
+}
+
+QBitField QBitField::united(const QBitField &o)
+{
+    if (o.bits == 0) {
+        return *this;
+    } else if (bits == 0) {
+        return o;
+    } else {
+        int max = (bits > o.bits)?bits:o.bits;
+        int length = (max + 31) / 32;
+        QBitField rv;
+        rv.bits = max;
+        rv.ownData = new quint32[length + 1];
+        *(rv.ownData) = 1;
+        rv.data = rv.ownData + 1;
+        if (bits > o.bits) {
+            ::memcpy((quint32 *)rv.data, data, length * sizeof(quint32));
+            for (quint32 ii = 0; ii < (o.bits + quint32(31)) / 32; ++ii)
+                ((quint32 *)rv.data)[ii] |= o.data[ii];
+        } else {
+            ::memcpy((quint32 *)rv.data, o.data, length * sizeof(quint32));
+            for (quint32 ii = 0; ii < (bits + quint32(31)) / 32; ++ii)
+                ((quint32 *)rv.data)[ii] |= data[ii];
+        }
+        return rv;
+    }
+}
+
+bool QBitField::testBit(int b) const
+{
+    Q_ASSERT(b >= 0);
+    if ((quint32)b < bits) {
+        return data[b / 32] & (1 << (b % 32));
+    } else {
+        return false;
+    }
+}
+
+QT_END_NAMESPACE
+
+#endif // QBITFIELD_P_H