158 lines
4.6 KiB
C++
158 lines
4.6 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_ProjectedExpression_H
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#define Patternist_ProjectedExpression_H
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#include <private/qitem_p.h>
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QT_BEGIN_NAMESPACE
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namespace QPatternist
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{
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class ProjectedExpression
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{
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public:
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typedef ProjectedExpression * Ptr;
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typedef QVector<ProjectedExpression::Ptr> Vector;
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virtual ~ProjectedExpression()
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{
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}
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enum Action
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{
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Move = 0,
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Skip = 1,
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Keep = 2,
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KeepSubtree = 4 | Keep
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};
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virtual Action actionForElement(const QXmlName name,
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ProjectedExpression::Ptr &next) const
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{
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Q_UNUSED(name);
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Q_UNUSED(next);
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return Skip;
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}
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};
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class ProjectedNodeTest
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{
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public:
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typedef ProjectedNodeTest * Ptr;
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virtual ~ProjectedNodeTest()
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{
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}
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virtual bool isMatch(const QXmlNodeModelIndex::NodeKind kind) const
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{
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Q_UNUSED(kind);
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return false;
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}
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};
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class ProjectedStep : public ProjectedExpression
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{
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public:
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ProjectedStep(const ProjectedNodeTest::Ptr test,
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const QXmlNodeModelIndex::Axis axis)
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{
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Q_ASSERT(test);
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Q_UNUSED(test);
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Q_UNUSED(axis);
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}
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virtual Action actionForElement(const QXmlName name,
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ProjectedExpression::Ptr &next) const
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{
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Q_UNUSED(name);
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Q_UNUSED(next);
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// TODO
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return Skip;
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}
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private:
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};
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class ProjectedPath : public ProjectedExpression
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{
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public:
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ProjectedPath(const ProjectedExpression::Ptr left,
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const ProjectedExpression::Ptr right) : m_left(left)
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{
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Q_ASSERT(m_left);
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Q_ASSERT(right);
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Q_UNUSED(right);
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}
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virtual Action actionForElement(const QXmlName name,
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ProjectedExpression::Ptr &next) const
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{
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ProjectedExpression::Ptr &candidateNext = next;
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const Action a = m_left->actionForElement(name, candidateNext);
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if(a != Skip)
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{
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/* The test accepted it, so let's replace us with the new step. */
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next = candidateNext;
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}
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return a;
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}
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private:
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const ProjectedExpression::Ptr m_left;
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};
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}
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QT_END_NAMESPACE
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#endif
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