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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_DelegatingDynamicContext_H
#define Patternist_DelegatingDynamicContext_H
#include <private/qdynamiccontext_p.h>
#include <private/qexpression_p.h>
QT_BEGIN_NAMESPACE
namespace QPatternist
{
/**
* @short Base class for dynamic contexts that are
* created from an existing one.
*
* In some cases multiple DynamicContext instances must be used in
* order to maintain somekind of scope. This class delegates
* the DynamicContext interface onto another DynamicContext instance,
* allowing the sub-class to only implement what it needs to.
*
* @author Frans Englich <frans.englich@nokia.com>
*/
class DelegatingDynamicContext : public DynamicContext
{
public:
xsInteger contextPosition() const override;
Item contextItem() const override;
xsInteger contextSize() override;
ItemCacheCell &itemCacheCell(const VariableSlotID slot) override;
ItemSequenceCacheCell::Vector &itemSequenceCacheCells(const VariableSlotID slot) override;
void setRangeVariable(const VariableSlotID slotNumber,
const Item &newValue) override;
Item rangeVariable(const VariableSlotID slotNumber) const override;
void setExpressionVariable(const VariableSlotID slotNumber,
const Expression::Ptr &newValue) override;
Expression::Ptr expressionVariable(const VariableSlotID slotNumber) const override;
void setFocusIterator(const Item::Iterator::Ptr &it) override;
Item::Iterator::Ptr focusIterator() const override;
Item::Iterator::Ptr positionIterator(const VariableSlotID slot) const override;
void setPositionIterator(const VariableSlotID slot,
const Item::Iterator::Ptr &newValue) override;
QAbstractMessageHandler * messageHandler() const override;
QExplicitlySharedDataPointer<DayTimeDuration> implicitTimezone() const override;
QDateTime currentDateTime() const override;
QAbstractXmlReceiver *outputReceiver() const override;
NodeBuilder::Ptr nodeBuilder(const QUrl &baseURI) const override;
ResourceLoader::Ptr resourceLoader() const override;
ExternalVariableLoader::Ptr externalVariableLoader() const override;
NamePool::Ptr namePool() const override;
QSourceLocation locationFor(const SourceLocationReflection *const reflection) const override;
void addNodeModel(const QAbstractXmlNodeModel::Ptr &nm) override;
const QAbstractUriResolver *uriResolver() const override;
ItemCacheCell &globalItemCacheCell(const VariableSlotID slot) override;
ItemSequenceCacheCell::Vector &globalItemSequenceCacheCells(const VariableSlotID slot) override;
Item currentItem() const override;
TemplateParameterHash &templateParameterStore() override;
DynamicContext::Ptr previousContext() const override;
QExplicitlySharedDataPointer<TemplateMode> currentTemplateMode() const override;
protected:
DelegatingDynamicContext(const DynamicContext::Ptr &prevContext);
const DynamicContext::Ptr m_prevContext;
};
}
QT_END_NAMESPACE
#endif
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