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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// 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 "qdynamiccontext_p.h"
#include "qexpression_p.h"
QT_BEGIN_HEADER
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:
virtual xsInteger contextPosition() const;
virtual Item contextItem() const;
virtual xsInteger contextSize();
virtual ItemCacheCell &itemCacheCell(const VariableSlotID slot);
virtual ItemSequenceCacheCell::Vector &itemSequenceCacheCells(const VariableSlotID slot);
virtual void setRangeVariable(const VariableSlotID slotNumber,
const Item &newValue);
virtual Item rangeVariable(const VariableSlotID slotNumber) const;
virtual void setExpressionVariable(const VariableSlotID slotNumber,
const Expression::Ptr &newValue);
virtual Expression::Ptr expressionVariable(const VariableSlotID slotNumber) const;
virtual void setFocusIterator(const Item::Iterator::Ptr &it);
virtual Item::Iterator::Ptr focusIterator() const;
virtual Item::Iterator::Ptr positionIterator(const VariableSlotID slot) const;
virtual void setPositionIterator(const VariableSlotID slot,
const Item::Iterator::Ptr &newValue);
virtual QAbstractMessageHandler * messageHandler() const;
virtual QExplicitlySharedDataPointer<DayTimeDuration> implicitTimezone() const;
virtual QDateTime currentDateTime() const;
virtual QAbstractXmlReceiver *outputReceiver() const;
virtual NodeBuilder::Ptr nodeBuilder(const QUrl &baseURI) const;
virtual ResourceLoader::Ptr resourceLoader() const;
virtual ExternalVariableLoader::Ptr externalVariableLoader() const;
virtual NamePool::Ptr namePool() const;
virtual QSourceLocation locationFor(const SourceLocationReflection *const reflection) const;
virtual void addNodeModel(const QAbstractXmlNodeModel::Ptr &nm);
virtual const QAbstractUriResolver *uriResolver() const;
virtual ItemCacheCell &globalItemCacheCell(const VariableSlotID slot);
virtual ItemSequenceCacheCell::Vector &globalItemSequenceCacheCells(const VariableSlotID slot);
virtual Item currentItem() const;
virtual TemplateParameterHash &templateParameterStore();
virtual DynamicContext::Ptr previousContext() const;
virtual QExplicitlySharedDataPointer<TemplateMode> currentTemplateMode() const;
protected:
DelegatingDynamicContext(const DynamicContext::Ptr &prevContext);
const DynamicContext::Ptr m_prevContext;
};
}
QT_END_NAMESPACE
QT_END_HEADER
#endif
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