/****************************************************************************+
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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_UnresolvedVariableReference_H+
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#define Patternist_UnresolvedVariableReference_H+
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+
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#include "qemptycontainer_p.h"+
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+
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QT_BEGIN_HEADER+
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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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    /**+
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     * @short Compile time only AST-node which is a marker for variable+
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     * references whose declaration has not yet appeared in the source code.+
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     *+
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     * This can not appear in XQuery, but can in XSL-T.+
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     *+
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     * @author Frans Englich <frans.englich@nokia.com>+
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     * @ingroup Patternist_expressions+
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     * @since 4.5+
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     */+
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    class Q_AUTOTEST_EXPORT UnresolvedVariableReference : public EmptyContainer+
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    {+
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    public:+
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        UnresolvedVariableReference(const QXmlName &name);+
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+
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        virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context,+
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                                          const SequenceType::Ptr &reqType);+
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        virtual SequenceType::List expectedOperandTypes() const;+
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        virtual SequenceType::Ptr staticType() const;+
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        virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;+
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        virtual ID id() const;+
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+
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        inline void bindTo(const Expression::Ptr &body);+
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+
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        inline Expression::Ptr replacement() const;+
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+
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    private:+
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        const QXmlName  m_name;+
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        Expression::Ptr m_replacement;+
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    };+
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+
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    void UnresolvedVariableReference::bindTo(const Expression::Ptr &body)+
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    {+
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        Q_ASSERT(body);+
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        m_replacement = body;+
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    }+
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+
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    Expression::Ptr UnresolvedVariableReference::replacement() const+
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    {+
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        Q_ASSERT(m_replacement);+
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        return m_replacement;+
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    }+
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+
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}+
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+
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QT_END_NAMESPACE+
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QT_END_HEADER+
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+
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#endif+
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