131 lines
5.2 KiB
C++
131 lines
5.2 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtXmlPatterns module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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#ifndef Patternist_StackContextBase_H
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#define Patternist_StackContextBase_H
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#include <QVector>
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#include <private/qdaytimeduration_p.h>
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#include <private/qdelegatingdynamiccontext_p.h>
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#include <private/qexpression_p.h>
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QT_BEGIN_NAMESPACE
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namespace QPatternist
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{
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/**
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* @short Base class for all DynamicContext classes that needs to supply
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* variables. It has a new frame for local caches, position iterators,
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* expressions, range variables, template parameters but notably continues
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* to delegate global caches.
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*
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* @author Frans Englich <frans.englich@nokia.com>
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*/
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template<typename TSuperClass>
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class StackContextBase : public TSuperClass
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{
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public:
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StackContextBase();
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/**
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* Construct a StackContextBase and passes @p prevContext to its super class. This
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* constructor is typically used when the super class is DelegatingDynamicContext.
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*/
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StackContextBase(const DynamicContext::Ptr &prevContext);
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virtual void setRangeVariable(const VariableSlotID slotNumber,
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const Item &newValue);
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virtual Item rangeVariable(const VariableSlotID slotNumber) const;
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virtual void setExpressionVariable(const VariableSlotID slotNumber,
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const Expression::Ptr &newValue);
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virtual Expression::Ptr expressionVariable(const VariableSlotID slotNumber) const;
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virtual Item::Iterator::Ptr positionIterator(const VariableSlotID slot) const;
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virtual void setPositionIterator(const VariableSlotID slot,
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const Item::Iterator::Ptr &newValue);
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virtual ItemCacheCell &itemCacheCell(const VariableSlotID slot);
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virtual ItemSequenceCacheCell::Vector &itemSequenceCacheCells(const VariableSlotID slot);
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virtual DynamicContext::TemplateParameterHash &templateParameterStore();
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protected:
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/**
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* This function is protected, although it only is used in this class. I don't
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* know why it has to be, but it won't compile when private.
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*/
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template<typename VectorType, typename UnitType>
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inline
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void setSlotVariable(const VariableSlotID slot,
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const UnitType &newValue,
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VectorType &container) const;
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private:
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Item::Vector m_rangeVariables;
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Expression::Vector m_expressionVariables;
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Item::Iterator::Vector m_positionIterators;
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ItemCacheCell::Vector m_itemCacheCells;
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ItemSequenceCacheCell::Vector m_itemSequenceCacheCells;
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DynamicContext::TemplateParameterHash m_templateParameterStore;
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};
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#include "qstackcontextbase_tpl_p.h"
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/**
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* @short A DynamicContext that creates a new scope for variables.
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*
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* This DynamicContext is used for recursive user function calls, for example.
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*/
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typedef StackContextBase<DelegatingDynamicContext> StackContext;
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}
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QT_END_NAMESPACE
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#endif
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