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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
** this package.
**
** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@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_TemplatePattern_H
#define Patternist_TemplatePattern_H
#include "qtemplate_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
namespace QPatternist
{
/**
* @short Houses the data necessary for a template pattern.
*
* A template pattern is the match pattern, but have had each operand to @c
* | separated out into a separate TemplatePattern. For instance, the
* pattern <tt>a | b | c</tt>, becomes three separate TemplatePattern
* instances.
*
* @see TemplateMode
* @see Template
* @author Frans Englich <frans.englich@nokia.com>
* @ingroup Patternist_expressions
* @since 4.5
*/
class TemplatePattern : public QSharedData
{
public:
typedef QExplicitlySharedDataPointer<TemplatePattern> Ptr;
typedef QVector<Ptr> Vector;
typedef int ID;
inline TemplatePattern(const Expression::Ptr &matchPattern,
const PatternPriority pri,
const ID id,
const Template::Ptr templ);
inline PatternPriority priority() const;
inline const Expression::Ptr &matchPattern() const;
inline void setMatchPattern(const Expression::Ptr &pattern);
inline const Template::Ptr &templateTarget() const;
inline ID id() const;
/**
* This ID is used to ensure that, as 6.4 Conflict Resolution for
* Template Rules reads:
*
* "If the pattern contains multiple alternatives separated by |, then
* the template rule is treated equivalently to a set of template
* rules, one for each alternative. However, it is not an error if a
* node matches more than one of the alternatives."
*
* For patterns separated by @c |, we have one Template instance for
* each alternative, but they all have the same ID, hence if several
* alternatives match, we don't flag it as an error if they have the
* same ID.
*/
private:
Expression::Ptr m_matchPattern;
PatternPriority m_priority;
ID m_id;
Template::Ptr m_templateTarget;
Q_DISABLE_COPY(TemplatePattern)
};
TemplatePattern::TemplatePattern(const Expression::Ptr &matchPattern,
const PatternPriority pri,
const ID id,
const Template::Ptr templ) : m_matchPattern(matchPattern)
, m_priority(pri)
, m_id(id)
, m_templateTarget(templ)
{
Q_ASSERT(m_matchPattern);
Q_ASSERT(m_templateTarget);
}
const Expression::Ptr &TemplatePattern::matchPattern() const
{
return m_matchPattern;
}
void TemplatePattern::setMatchPattern(const Expression::Ptr &pattern)
{
m_matchPattern = pattern;
}
PatternPriority TemplatePattern::priority() const
{
return m_priority;
}
TemplatePattern::ID TemplatePattern::id() const
{
return m_id;
}
const Template::Ptr &TemplatePattern::templateTarget() const
{
return m_templateTarget;
}
}
QT_END_NAMESPACE
QT_END_HEADER
#endif
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