diff options
Diffstat (limited to 'src/xmlpatterns/environment/qstackcontextbase_p.h')
| -rw-r--r-- | src/xmlpatterns/environment/qstackcontextbase_p.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/src/xmlpatterns/environment/qstackcontextbase_p.h b/src/xmlpatterns/environment/qstackcontextbase_p.h new file mode 100644 index 0000000..ac1f038 --- /dev/null +++ b/src/xmlpatterns/environment/qstackcontextbase_p.h @@ -0,0 +1,136 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@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_StackContextBase_H +#define Patternist_StackContextBase_H + +#include <QVector> + +#include "qdaytimeduration_p.h" +#include "qdelegatingdynamiccontext_p.h" +#include "qexpression_p.h" + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +namespace QPatternist +{ + /** + * @short Base class for all DynamicContext classes that needs to supply + * variables. It has a new frame for local caches, position iterators, + * expressions, range variables, template parameters but notably continues + * to delegate global caches. + * + * @author Frans Englich <fenglich@trolltech.com> + */ + template<typename TSuperClass> + class StackContextBase : public TSuperClass + { + public: + StackContextBase(); + /** + * Construct a StackContextBase and passes @p prevContext to its super class. This + * constructor is typically used when the super class is DelegatingDynamicContext. + */ + StackContextBase(const DynamicContext::Ptr &prevContext); + + 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 Item::Iterator::Ptr positionIterator(const VariableSlotID slot) const; + virtual void setPositionIterator(const VariableSlotID slot, + const Item::Iterator::Ptr &newValue); + virtual ItemCacheCell &itemCacheCell(const VariableSlotID slot); + virtual ItemSequenceCacheCell::Vector &itemSequenceCacheCells(const VariableSlotID slot); + + virtual DynamicContext::TemplateParameterHash &templateParameterStore(); + + protected: + /** + * This function is protected, although it only is used in this class. I don't + * know why it has to be, but it won't compile when private. + */ + template<typename VectorType, typename UnitType> + inline + void setSlotVariable(const VariableSlotID slot, + const UnitType &newValue, + VectorType &container) const; + + private: + Item::Vector m_rangeVariables; + Expression::Vector m_expressionVariables; + Item::Iterator::Vector m_positionIterators; + ItemCacheCell::Vector m_itemCacheCells; + ItemSequenceCacheCell::Vector m_itemSequenceCacheCells; + DynamicContext::TemplateParameterHash m_templateParameterStore; + }; + + #include "qstackcontextbase.cpp" + + /** + * @short A DynamicContext that creates a new scope for variables. + * + * This DynamicContext is used for recursive user function calls, for example. + */ + typedef StackContextBase<DelegatingDynamicContext> StackContext; +} + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif |