/**************************************************************************** | |
** | |
** Copyright (C) 2011 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. | |
** | |
** $QT_BEGIN_LICENSE:LGPL$ | |
** GNU Lesser General Public License Usage | |
** 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. | |
** | |
** 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. | |
** | |
** Other Usage | |
** Alternatively, this file may be used in accordance with the terms and | |
** conditions contained in a signed written agreement between you and Nokia. | |
** | |
** | |
** | |
** | |
** | |
** $QT_END_LICENSE$ | |
** | |
****************************************************************************/ | |
// | |
// 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 QABSTRACTXMLFORWARDITERATOR_H | |
#define QABSTRACTXMLFORWARDITERATOR_H | |
#include <QtCore/QList> | |
#include <QtCore/QVector> | |
#include <QtCore/QSharedData> | |
#include <QtCore/QString> | |
QT_BEGIN_HEADER | |
QT_BEGIN_NAMESPACE | |
QT_MODULE(XmlPatterns) | |
template<typename T> class QVector; | |
/* In this file we in some cases do not use QAbstractXmlForwardIterator's Ptr typedef. | |
* This is a compiler workaround for MS VS 6.0. */ | |
template<typename T> | |
inline bool qIsForwardIteratorEnd(const T &unit) | |
{ | |
return !unit; | |
} | |
/** | |
* @short Helper class for StringSplitter | |
* | |
* Needed by the QAbstractXmlForwardIterator sub-class. | |
* | |
* @relates StringSplitter | |
*/ | |
template<> | |
inline bool qIsForwardIteratorEnd(const QString &unit) | |
{ | |
return unit.isNull(); | |
} | |
template<typename T> class QAbstractXmlForwardIterator; | |
class QAbstractXmlForwardIteratorPrivate; | |
template<typename T> | |
class QAbstractXmlForwardIterator : public QSharedData | |
{ | |
public: | |
typedef QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<T> > Ptr; | |
typedef QList<QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<T> > > List; | |
typedef QVector<QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<T> > > Vector; | |
inline QAbstractXmlForwardIterator() : d_ptr(0) {} | |
virtual ~QAbstractXmlForwardIterator() {} | |
virtual T next() = 0; | |
virtual T current() const = 0; | |
virtual qint64 position() const = 0; | |
virtual typename QAbstractXmlForwardIterator<T>::Ptr toReversed(); | |
virtual QList<T> toList(); | |
virtual typename QAbstractXmlForwardIterator<T>::Ptr copy() const; | |
virtual T last(); | |
virtual bool isEmpty(); | |
virtual qint64 count(); | |
virtual qint64 sizeHint() const; | |
private: | |
Q_DISABLE_COPY(QAbstractXmlForwardIterator<T>) | |
QAbstractXmlForwardIteratorPrivate *d_ptr; /* Currently not used. */ | |
}; | |
/* The namespace QPatternist and its members are internal, not part of the public API, and | |
* unsupported. Using them leads to undefined behavior. */ | |
namespace QPatternist | |
{ | |
class DeduplicateIterator; | |
template<typename InputType, | |
typename OutputType, | |
typename Derived, | |
typename ListType = QList<InputType> > | |
class ListIteratorPlatform : public QAbstractXmlForwardIterator<OutputType> | |
{ | |
/* This declaration is a workaround for a set of GCC versions on OS X, | |
* amongst others powerpc-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1. In | |
* DeduplicateIterator, it fails to see the protected inheritance. */ | |
friend class DeduplicateIterator; | |
public: | |
virtual OutputType next() | |
{ | |
if(m_position == -1) | |
return OutputType(); | |
if(m_position == m_list.count()) | |
{ | |
m_position = -1; | |
m_current = OutputType(); | |
return OutputType(); | |
} | |
m_current = static_cast<const Derived *>(this)->inputToOutputItem(m_list.at(m_position)); | |
++m_position; | |
return m_current; | |
} | |
virtual OutputType current() const | |
{ | |
return m_current; | |
} | |
virtual qint64 position() const | |
{ | |
return m_position; | |
} | |
virtual qint64 count() | |
{ | |
return m_list.count(); | |
} | |
virtual typename QAbstractXmlForwardIterator<OutputType>::Ptr copy() const | |
{ | |
return QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<OutputType> >(new ListIteratorPlatform<InputType, OutputType, Derived, ListType>(m_list)); | |
} | |
protected: | |
inline ListIteratorPlatform(const ListType &list) : m_list(list) | |
, m_position(0) | |
{ | |
} | |
const ListType m_list; | |
qint64 m_position; | |
OutputType m_current; | |
}; | |
template<typename T, | |
typename ListType = QList<T> > | |
class ListIterator : public ListIteratorPlatform<T, T, ListIterator<T, ListType>, ListType> | |
{ | |
/* | |
* This declaration is needed for MSVC 2005, 14.00.50727.42 for 80x86. | |
*/ | |
friend class IteratorVector; | |
using ListIteratorPlatform<T, T, ListIterator<T, ListType>, ListType>::m_list; | |
static inline QVector<T> toVector(const QVector<T> &vector) | |
{ | |
return vector; | |
} | |
static inline QVector<T> toVector(const QList<T> &list) | |
{ | |
return list.toVector(); | |
} | |
static inline QList<T> toList(const QVector<T> &vector) | |
{ | |
return vector.toList(); | |
} | |
static inline QList<T> toList(const QList<T> &list) | |
{ | |
return list; | |
} | |
public: | |
inline ListIterator(const ListType &list) : ListIteratorPlatform<T, T, ListIterator<T, ListType>, ListType>(list) | |
{ | |
} | |
virtual QList<T> toList() | |
{ | |
return toList(m_list); | |
} | |
virtual QVector<T> toVector() | |
{ | |
return toVector(m_list); | |
} | |
private: | |
inline const T &inputToOutputItem(const T &inputType) const | |
{ | |
return inputType; | |
} | |
friend class ListIteratorPlatform<T, T, ListIterator<T, ListType>, ListType>; | |
// needed for MSVC 2005 | |
friend class DeduplicateIterator; | |
}; | |
template<typename T> | |
inline | |
typename QAbstractXmlForwardIterator<T>::Ptr | |
makeListIterator(const QList<T> &list) | |
{ | |
return typename ListIterator<T>::Ptr(new ListIterator<T>(list)); | |
} | |
template<typename T> | |
inline | |
typename QAbstractXmlForwardIterator<T>::Ptr | |
makeVectorIterator(const QVector<T> &vector) | |
{ | |
return typename ListIterator<T, QVector<T> >::Ptr(new ListIterator<T, QVector<T> >(vector)); | |
} | |
} | |
template<typename T> | |
QList<T> QAbstractXmlForwardIterator<T>::toList() | |
{ | |
QList<T> result; | |
T item(next()); | |
while(!qIsForwardIteratorEnd(item)) | |
{ | |
result.append(item); | |
item = next(); | |
} | |
return result; | |
} | |
template<typename T> | |
qint64 QAbstractXmlForwardIterator<T>::count() | |
{ | |
qint64 retval = 0; | |
while(!qIsForwardIteratorEnd(next())) | |
++retval; | |
return retval; | |
} | |
template<typename T> | |
typename QAbstractXmlForwardIterator<T>::Ptr QAbstractXmlForwardIterator<T>::toReversed() | |
{ | |
T item(next()); | |
QList<T> result; | |
while(!qIsForwardIteratorEnd(item)) | |
{ | |
result.prepend(item); | |
item = next(); | |
} | |
return QExplicitlySharedDataPointer<QAbstractXmlForwardIterator<T> >(new QPatternist::ListIterator<T>(result)); | |
} | |
template<typename T> | |
T QAbstractXmlForwardIterator<T>::last() | |
{ | |
T item(next()); | |
while(!qIsForwardIteratorEnd(item)) | |
item = next(); | |
return item; | |
} | |
template<typename T> | |
typename QAbstractXmlForwardIterator<T>::Ptr QAbstractXmlForwardIterator<T>::copy() const | |
{ | |
Q_ASSERT_X(false, Q_FUNC_INFO, | |
"This function is internal, unsupported, and should never be called."); | |
return typename QAbstractXmlForwardIterator<T>::Ptr(); | |
} | |
template<typename T> | |
bool QAbstractXmlForwardIterator<T>::isEmpty() | |
{ | |
return qIsForwardIteratorEnd(next()); | |
} | |
template<typename T> | |
qint64 QAbstractXmlForwardIterator<T>::sizeHint() const | |
{ | |
Q_ASSERT_X(false, Q_FUNC_INFO, "This function is currently not expected to be used."); | |
return -1; | |
} | |
QT_END_NAMESPACE | |
QT_END_HEADER | |
#endif |