| /**************************************************************************** |
| ** |
| ** 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 |