| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
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| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
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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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| ** $QT_END_LICENSE$ |
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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_ProjectedExpression_H |
| #define Patternist_ProjectedExpression_H |
| |
| #include <private/qitem_p.h> |
| |
| 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) |
| { |
| Q_ASSERT(test); |
| Q_UNUSED(test); |
| Q_UNUSED(axis); |
| } |
| |
| virtual Action actionForElement(const QXmlName name, |
| ProjectedExpression::Ptr &next) const |
| { |
| Q_UNUSED(name); |
| Q_UNUSED(next); |
| // TODO |
| return Skip; |
| } |
| |
| private: |
| }; |
| |
| class ProjectedPath : public ProjectedExpression |
| { |
| public: |
| ProjectedPath(const ProjectedExpression::Ptr left, |
| const ProjectedExpression::Ptr right) : m_left(left) |
| { |
| Q_ASSERT(m_left); |
| Q_ASSERT(right); |
| Q_UNUSED(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; |
| }; |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif |