diff -r 000000000000 -r 1918ee327afb src/xmlpatterns/api/qabstractxmlforwarditerator_p.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/xmlpatterns/api/qabstractxmlforwarditerator_p.h Mon Jan 11 14:00:40 2010 +0000 @@ -0,0 +1,341 @@ +/**************************************************************************** +** +** Copyright (C) 2009 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 QABSTRACTXMLFORWARDITERATOR_H +#define QABSTRACTXMLFORWARDITERATOR_H + +#include +#include +#include +#include + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(XmlPatterns) + +template 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 +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 class QAbstractXmlForwardIterator; + +class QAbstractXmlForwardIteratorPrivate; + +template +class QAbstractXmlForwardIterator : public QSharedData +{ +public: + typedef QExplicitlySharedDataPointer > Ptr; + typedef QList > > List; + typedef QVector > > 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::Ptr toReversed(); + virtual QList toList(); + virtual typename QAbstractXmlForwardIterator::Ptr copy() const; + virtual T last(); + virtual bool isEmpty(); + virtual qint64 count(); + virtual qint64 sizeHint() const; + +private: + Q_DISABLE_COPY(QAbstractXmlForwardIterator) + + 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 > + class ListIteratorPlatform : public QAbstractXmlForwardIterator + { + /* 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(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::Ptr copy() const + { + return QExplicitlySharedDataPointer >(new ListIteratorPlatform(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 > + class ListIterator : public ListIteratorPlatform, ListType> + { + /* + * This declaration is needed for MSVC 2005, 14.00.50727.42 for 80x86. + */ + friend class IteratorVector; + + using ListIteratorPlatform, ListType>::m_list; + + static inline QVector toVector(const QVector &vector) + { + return vector; + } + + static inline QVector toVector(const QList &list) + { + return list.toVector(); + } + + static inline QList toList(const QVector &vector) + { + return vector.toList(); + } + + static inline QList toList(const QList &list) + { + return list; + } + + public: + inline ListIterator(const ListType &list) : ListIteratorPlatform, ListType>(list) + { + } + + virtual QList toList() + { + return toList(m_list); + } + + virtual QVector toVector() + { + return toVector(m_list); + } + + private: + inline const T &inputToOutputItem(const T &inputType) const + { + return inputType; + } + friend class ListIteratorPlatform, ListType>; + + // needed for MSVC 2005 + friend class DeduplicateIterator; + }; + + template + inline + typename QAbstractXmlForwardIterator::Ptr + makeListIterator(const QList &list) + { + return typename ListIterator::Ptr(new ListIterator(list)); + } + + template + inline + typename QAbstractXmlForwardIterator::Ptr + makeVectorIterator(const QVector &vector) + { + return typename ListIterator >::Ptr(new ListIterator >(vector)); + } +} + +template +QList QAbstractXmlForwardIterator::toList() +{ + QList result; + T item(next()); + + while(!qIsForwardIteratorEnd(item)) + { + result.append(item); + item = next(); + } + + return result; +} + +template +qint64 QAbstractXmlForwardIterator::count() +{ + qint64 retval = 0; + + while(!qIsForwardIteratorEnd(next())) + ++retval; + + return retval; +} + +template +typename QAbstractXmlForwardIterator::Ptr QAbstractXmlForwardIterator::toReversed() +{ + T item(next()); + QList result; + + while(!qIsForwardIteratorEnd(item)) + { + result.prepend(item); + item = next(); + } + + return QExplicitlySharedDataPointer >(new QPatternist::ListIterator(result)); +} + +template +T QAbstractXmlForwardIterator::last() +{ + T item(next()); + + while(!qIsForwardIteratorEnd(item)) + item = next(); + + return item; +} + +template +typename QAbstractXmlForwardIterator::Ptr QAbstractXmlForwardIterator::copy() const +{ + Q_ASSERT_X(false, Q_FUNC_INFO, + "This function is internal, unsupported, and should never be called."); + return typename QAbstractXmlForwardIterator::Ptr(); +} + +template +bool QAbstractXmlForwardIterator::isEmpty() +{ + return qIsForwardIteratorEnd(next()); +} + +template +qint64 QAbstractXmlForwardIterator::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