/****************************************************************************+
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**+
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the QtXmlPatterns module of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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//+
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//  W A R N I N G+
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//  -------------+
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//+
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// This file is not part of the Qt API.  It exists purely as an+
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// implementation detail.  This header file may change from version to+
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// version without notice, or even be removed.+
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//+
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// We mean it.+
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+
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#ifndef Patternist_IndexOfIterator_H+
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#define Patternist_IndexOfIterator_H+
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+
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#include "qitem_p.h"+
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#include "qatomiccomparator_p.h"+
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#include "qcomparisonplatform_p.h"+
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#include "qdynamiccontext_p.h"+
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#include "qexpression_p.h"+
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+
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QT_BEGIN_HEADER+
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+
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QT_BEGIN_NAMESPACE+
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+
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namespace QPatternist+
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{+
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    /**+
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     * @short Forms an QAbstractXmlForwardIterator over a sequence of integers, which each is the position+
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     * of where a search parameter appeared in another QAbstractXmlForwardIterator.+
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     *+
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     * @see <a href="http://www.w3.org/TR/xpath-functions/#func-index-of">XQuery 1.0+
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     * and XPath 2.0 Functions and Operators, 15.1.3 fn:index-of</a>+
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     * @author Frans Englich <frans.englich@nokia.com>+
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     * @ingroup Patternist_iterators+
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     */+
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    class IndexOfIterator : public Item::Iterator+
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                          , public ComparisonPlatform<IndexOfIterator, false>+
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                          , public SourceLocationReflection+
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    {+
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    public:+
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+
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        /**+
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         * Creates an IndexOfIterator, whose next() function returns integers being+
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         * the index positions of where @p searchParam was found in @p inputSequence.+
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         *+
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         * @param comp the AtomicComparator to be used for comparing values. This may be @c null,+
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         * meaning the IndexOfIterator iterator will dynamically determine what comparator to use+
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         * on an item per item basis, which is slower.+
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         * @param searchParam the item which should be compared to the items in @p inputSequence.+
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         * @param inputSequence the input sequence which indexes of the @p searchParam should+
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         * be returned for.+
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         * @param context the usual DynamicContext+
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         * @param expr the Expression that this IndexOfIterator is evaluating+
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         * for. It is used for error reporting, via actualReflection().+
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         */+
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        IndexOfIterator(const Item::Iterator::Ptr &inputSequence,+
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                        const Item &searchParam,+
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                        const AtomicComparator::Ptr &comp,+
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                        const DynamicContext::Ptr &context,+
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                        const Expression::ConstPtr &expr);+
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+
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        virtual Item next();+
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        virtual Item current() const;+
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        virtual xsInteger position() const;+
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        virtual Item::Iterator::Ptr copy() const;+
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+
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        inline AtomicComparator::Operator operatorID() const+
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        {+
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            return AtomicComparator::OperatorEqual;+
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        }+
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+
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        virtual const SourceLocationReflection *actualReflection() const;+
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+
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    private:+
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        const Item::Iterator::Ptr   m_seq;+
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        const Item                  m_searchParam;+
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        const DynamicContext::Ptr   m_context;+
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        const Expression::ConstPtr  m_expr;+
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        Item                        m_current;+
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        xsInteger                   m_position;+
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        xsInteger                   m_seqPos;+
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    };+
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}+
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+
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QT_END_NAMESPACE+
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+
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QT_END_HEADER+
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+
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#endif+
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