| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
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| ** 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 |
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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_StackContextBase_H |
| #define Patternist_StackContextBase_H |
| |
| #include <QVector> |
| |
| #include <private/qdaytimeduration_p.h> |
| #include <private/qdelegatingdynamiccontext_p.h> |
| #include <private/qexpression_p.h> |
| |
| 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 <frans.englich@nokia.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_tpl_p.h" |
| |
| /** |
| * @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 |
| |
| #endif |