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Diffstat (limited to 'src/declarative/qml/ftw/qpointervaluepair_p.h')
| -rw-r--r-- | src/declarative/qml/ftw/qpointervaluepair_p.h | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/src/declarative/qml/ftw/qpointervaluepair_p.h b/src/declarative/qml/ftw/qpointervaluepair_p.h deleted file mode 100644 index fd1a77004e..0000000000 --- a/src/declarative/qml/ftw/qpointervaluepair_p.h +++ /dev/null @@ -1,196 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the QtDeclarative 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. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef QPOINTERVALUEPAIR_P_H -#define QPOINTERVALUEPAIR_P_H - -// -// 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. -// - -#include <QtCore/qglobal.h> -#include <private/qflagpointer_p.h> - -QT_BEGIN_NAMESPACE - -// QPointerValuePair is intended to help reduce the memory consumption of a class. -// In the common case, QPointerValuePair behaves like a pointer. In this mode, it -// consumes the same memory as a regular pointer. -// Additionally, QPointerValuePair can store an arbitrary value type in *addition* -// to the pointer. In this case, it uses slightly more memory than the pointer and -// value type combined. -// Consequently, this class is most useful in cases where a pointer is always stored -// and a value type is rarely stored. -template<typename P, typename V> -class QPointerValuePair { -public: - inline QPointerValuePair(); - inline QPointerValuePair(P *); - inline ~QPointerValuePair(); - - inline bool isNull() const; - - inline bool flag() const; - inline void setFlag(); - inline void clearFlag(); - inline void setFlagValue(bool); - - inline QPointerValuePair<P, V> &operator=(P *); - - inline P *operator->() const; - inline P *operator*() const; - - inline bool hasValue() const; - inline V &value(); - inline const V *constValue() const; - -private: - struct Value { P *pointer; V value; }; - QBiPointer<P, Value> d; -}; - -template<typename P, typename V> -QPointerValuePair<P, V>::QPointerValuePair() -{ -} - -template<typename P, typename V> -QPointerValuePair<P, V>::QPointerValuePair(P *p) -: d(p) -{ -} - -template<typename P, typename V> -QPointerValuePair<P, V>::~QPointerValuePair() -{ - if (d.isT2()) delete d.asT2(); -} - -template<typename P, typename V> -bool QPointerValuePair<P, V>::isNull() const -{ - if (d.isT1()) return 0 == d.asT1(); - else return d.asT2()->pointer == 0; -} - -template<typename P, typename V> -bool QPointerValuePair<P, V>::flag() const -{ - return d.flag(); -} - -template<typename P, typename V> -void QPointerValuePair<P, V>::setFlag() -{ - d.setFlag(); -} - -template<typename P, typename V> -void QPointerValuePair<P, V>::clearFlag() -{ - d.clearFlag(); -} - -template<typename P, typename V> -void QPointerValuePair<P, V>::setFlagValue(bool v) -{ - d.setFlagValue(v); -} - -template<typename P, typename V> -QPointerValuePair<P, V> &QPointerValuePair<P, V>::operator=(P *o) -{ - if (d.isT1()) d = o; - else d.asT2()->pointer = o; - return *this; -} - -template<typename P, typename V> -P *QPointerValuePair<P, V>::operator->() const -{ - if (d.isT1()) return d.asT1(); - else return d.asT2()->pointer; -} - -template<typename P, typename V> -P *QPointerValuePair<P, V>::operator*() const -{ - if (d.isT1()) return d.asT1(); - else return d.asT2()->pointer; -} - -template<typename P, typename V> -bool QPointerValuePair<P, V>::hasValue() const -{ - return d.isT2(); -} - -template<typename P, typename V> -V &QPointerValuePair<P, V>::value() -{ - if (d.isT1()) { - P *p = d.asT1(); - Value *value = new Value; - value->pointer = p; - d = value; - } - - return d.asT2()->value; -} - -// Will return null if hasValue() == false -template<typename P, typename V> -const V *QPointerValuePair<P, V>::constValue() const -{ - if (d.isT2()) return &d.asT2()->value; - else return 0; -} - -QT_END_NAMESPACE - -#endif // QPOINTERVALUEPAIR_P_H |