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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

//
//  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_CallTemplate_H
#define Patternist_CallTemplate_H

#include <private/qcallsite_p.h>
#include <private/qtemplateinvoker_p.h>
#include <private/qtemplate_p.h>

QT_BEGIN_NAMESPACE

namespace QPatternist
{
    /**
     * @short Implements @c xsl:call-template.
     *
     * @since 4.5
     * @author Frans Englich <frans.englich@nokia.com>
     * @ingroup Patternist_expressions
     */
    class CallTemplate : public TemplateInvoker
    {
    public:
        typedef QExplicitlySharedDataPointer<CallTemplate> Ptr;

        CallTemplate(const QXmlName &name,
                     const WithParam::Hash &withParams);

        Item::Iterator::Ptr evaluateSequence(const DynamicContext::Ptr &context) const override;
        bool evaluateEBV(const DynamicContext::Ptr &context) const override;
        void evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const override;

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

        /**
         * This is a bit complicated by that we have two required types, one
         * specified by @c xsl:param in the template declaration, and one on @c
         * xsl:with-param.
         *
         * @see UserFunctionCallsite::expectedOperandTypes()
         * @see <a href="http://www.w3.org/TR/xslt20/#with-param">XSL
         * Transformations (XSLT) Version 2.0, 10.1.1 Passing Parameters to Templates</a>
         */
        Expression::Ptr typeCheck(const StaticContext::Ptr &context,
                                  const SequenceType::Ptr &reqType) override;


        inline void setTemplate(const Template::Ptr &templ)
        {
            m_template = templ;
        }

        bool configureRecursion(const CallTargetDescription::Ptr &sign) override;
        Expression::Ptr body() const override;
        CallTargetDescription::Ptr callTargetDescription() const override;
    private:
        Template::Ptr   m_template;
    };
}

QT_END_NAMESPACE

#endif