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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Build Suite.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#ifndef QBS_WEAKPOINTER_H
#define QBS_WEAKPOINTER_H
#include <QWeakPointer>
namespace qbs {
namespace Internal {
template<typename T> class WeakPointer : public QWeakPointer<T>
{
public:
WeakPointer() : QWeakPointer<T>() {}
WeakPointer(const QSharedPointer<T> &sharedPointer) : QWeakPointer<T>(sharedPointer) {}
template <class X> WeakPointer(const QSharedPointer<X> &sp) : QWeakPointer<T>(sp) { }
operator T*() const { return checkedData(); }
T *operator->() const { return checkedData(); }
T operator*() const { return *checkedData(); }
private:
T *checkedData() const {
T * const d = QWeakPointer<T>::data();
Q_ASSERT(d); // Calling code is not expecting this situation.
return d;
}
};
} // namespace Internal
} // namespace qbs
#endif // QBS_WEAKPOINTER_H
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