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Diffstat (limited to 'src/xmlpatterns/projection/qprojectedexpression_p.h')
| -rw-r--r-- | src/xmlpatterns/projection/qprojectedexpression_p.h | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/xmlpatterns/projection/qprojectedexpression_p.h b/src/xmlpatterns/projection/qprojectedexpression_p.h new file mode 100644 index 0000000000..8f549024d6 --- /dev/null +++ b/src/xmlpatterns/projection/qprojectedexpression_p.h @@ -0,0 +1,165 @@ +/**************************************************************************** +** +** 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_ProjectedExpression_H +#define Patternist_ProjectedExpression_H + +#include "qitem_p.h" + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +namespace QPatternist +{ + class ProjectedExpression + { + public: + typedef ProjectedExpression * Ptr; + typedef QVector<ProjectedExpression::Ptr> Vector; + virtual ~ProjectedExpression() + { + } + + enum Action + { + Move = 0, + Skip = 1, + Keep = 2, + KeepSubtree = 4 | Keep + }; + + virtual Action actionForElement(const QXmlName name, + ProjectedExpression::Ptr &next) const + { + Q_UNUSED(name); + Q_UNUSED(next); + return Skip; + } + + }; + + class ProjectedNodeTest + { + public: + typedef ProjectedNodeTest * Ptr; + virtual ~ProjectedNodeTest() + { + } + + virtual bool isMatch(const QXmlNodeModelIndex::NodeKind kind) const + { + Q_UNUSED(kind); + return false; + } + }; + + class ProjectedStep : public ProjectedExpression + { + public: + ProjectedStep(const ProjectedNodeTest::Ptr test, + const QXmlNodeModelIndex::Axis axis) : m_test(test), + m_axis(axis) + { + Q_ASSERT(m_test); + } + + virtual Action actionForElement(const QXmlName name, + ProjectedExpression::Ptr &next) const + { + Q_UNUSED(name); + Q_UNUSED(next); + // TODO + return Skip; + } + + private: + const ProjectedNodeTest::Ptr m_test; + const QXmlNodeModelIndex::Axis m_axis; + }; + + class ProjectedPath : public ProjectedExpression + { + public: + ProjectedPath(const ProjectedExpression::Ptr left, + const ProjectedExpression::Ptr right) : m_left(left), + m_right(right) + { + Q_ASSERT(m_left); + Q_ASSERT(m_right); + } + + virtual Action actionForElement(const QXmlName name, + ProjectedExpression::Ptr &next) const + { + ProjectedExpression::Ptr &candidateNext = next; + const Action a = m_left->actionForElement(name, candidateNext); + + if(a != Skip) + { + /* The test accepted it, so let's replace us with the new step. */ + next = candidateNext; + } + + return a; + } + + private: + const ProjectedExpression::Ptr m_left; + const ProjectedExpression::Ptr m_right; + }; +} + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif |