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diff --git a/src/qml/qml/qqmlabstractexpression_p.h b/src/qml/qml/qqmlabstractexpression_p.h
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-/****************************************************************************
-**
-** Copyright (C) 2015 The Qt Company Ltd.
-** Contact: http://www.qt.io/licensing/
-**
-** This file is part of the QtQml module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL21$
-** 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 The Qt Company. For licensing terms
-** and conditions see http://www.qt.io/terms-conditions. For further
-** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
-** Software Foundation and appearing in the file LICENSE.LGPLv21 and
-** LICENSE.LGPLv3 included in the packaging of this file. Please review the
-** following information to ensure the GNU Lesser General Public License
-** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
-** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** As a special exception, The Qt Company gives you certain additional
-** rights. These rights are described in The Qt Company LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef QQMLABSTRACTEXPRESSION_P_H
-#define QQMLABSTRACTEXPRESSION_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 <private/qqmlcontext_p.h>
-#include <private/qfieldlist_p.h>
-#include <private/qflagpointer_p.h>
-
-QT_BEGIN_NAMESPACE
-
-class Q_QML_PRIVATE_EXPORT QQmlAbstractExpression
-{
-public:
- QQmlAbstractExpression();
- virtual ~QQmlAbstractExpression();
-
- bool isValid() const;
-
- QQmlContextData *context() const;
- void setContext(QQmlContextData *);
-
- virtual void refresh();
-
- class DeleteWatcher {
- public:
- inline DeleteWatcher(QQmlAbstractExpression *);
- inline ~DeleteWatcher();
- inline bool wasDeleted() const;
- private:
- friend class QQmlAbstractExpression;
- QQmlContextData *_c;
- QQmlAbstractExpression **_w;
- QQmlAbstractExpression *_s;
- };
-
-private:
- friend class QQmlContext;
- friend class QQmlContextData;
- friend class QQmlContextPrivate;
-
- QBiPointer<QQmlContextData, DeleteWatcher> m_context;
- QQmlAbstractExpression **m_prevExpression;
- QQmlAbstractExpression *m_nextExpression;
-};
-
-QQmlAbstractExpression::DeleteWatcher::DeleteWatcher(QQmlAbstractExpression *e)
-: _c(0), _w(0), _s(e)
-{
- if (e->m_context.isT1()) {
- _w = &_s;
- _c = e->m_context.asT1();
- e->m_context = this;
- } else {
- // Another watcher is already registered
- _w = &e->m_context.asT2()->_s;
- }
-}
-
-QQmlAbstractExpression::DeleteWatcher::~DeleteWatcher()
-{
- Q_ASSERT(*_w == 0 || (*_w == _s && _s->m_context.isT2()));
- if (*_w && _s->m_context.asT2() == this)
- _s->m_context = _c;
-}
-
-bool QQmlAbstractExpression::DeleteWatcher::wasDeleted() const
-{
- return *_w == 0;
-}
-
-QT_END_NAMESPACE
-
-#endif // QQMLABSTRACTEXPRESSION_P_H