/****************************************************************************
**
** 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 QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
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** accordance with the Qt Commercial License Agreement provided with the
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** a written agreement between you and Nokia.
**
** 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
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
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** packaging of this file.  Please review the following information to
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****************************************************************************/

//
//  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.

#ifndef Patternist_TemplateParameterReference_H
#define Patternist_TemplateParameterReference_H

#include "qvariabledeclaration_p.h"
#include "qemptycontainer_p.h"

QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE

namespace QPatternist
{
    /**
     * @short A reference to a template parameter declared with @c xsl:param.
     *
     * @author Frans Englich <frans.englich@nokia.com>
     * @ingroup Patternist_expressions
     * @since 4.5
     */
    class TemplateParameterReference : public EmptyContainer
    {
    public:
        TemplateParameterReference(const VariableDeclaration::Ptr &varDecl);

        virtual bool evaluateEBV(const DynamicContext::Ptr &context) const;
        virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
        virtual Item::Iterator::Ptr evaluateSequence(const DynamicContext::Ptr &context) const;

        virtual SequenceType::Ptr staticType() const;
        virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
        virtual Properties properties() const;

        inline const Expression::Ptr &sourceExpression() const;
        inline const VariableDeclaration::Ptr &variableDeclaration() const;

    private:
        const VariableDeclaration::Ptr m_varDecl;
    };

    inline const Expression::Ptr &TemplateParameterReference::sourceExpression() const
    {
        return m_varDecl->expression();
    }

    inline const VariableDeclaration::Ptr &TemplateParameterReference::variableDeclaration() const
    {
        return m_varDecl;
    }

}

QT_END_NAMESPACE
QT_END_HEADER

#endif