summaryrefslogtreecommitdiffstats
path: root/src/corelib/tools/qscopedpointer_p.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/corelib/tools/qscopedpointer_p.h')
-rw-r--r--src/corelib/tools/qscopedpointer_p.h151
1 files changed, 151 insertions, 0 deletions
diff --git a/src/corelib/tools/qscopedpointer_p.h b/src/corelib/tools/qscopedpointer_p.h
new file mode 100644
index 0000000000..fb627a4e6a
--- /dev/null
+++ b/src/corelib/tools/qscopedpointer_p.h
@@ -0,0 +1,151 @@
+/****************************************************************************
+**
+** 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 QtCore 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 for the convenience
+// of internal files. This header file may change from version to version
+// without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef QSCOPEDPOINTER_P_H
+#define QSCOPEDPOINTER_P_H
+
+#include "QtCore/qscopedpointer.h"
+
+QT_BEGIN_HEADER
+QT_BEGIN_NAMESPACE
+QT_MODULE(Core)
+
+
+/* Internal helper class - exposes the data through data_ptr (legacy from QShared).
+ Required for some internal Qt classes, do not use otherwise. */
+template <typename T, typename Cleanup = QScopedPointerDeleter<T> >
+class QCustomScopedPointer : public QScopedPointer<T, Cleanup>
+{
+public:
+ explicit inline QCustomScopedPointer(T *p = 0)
+ : QScopedPointer<T, Cleanup>(p)
+ {
+ }
+
+ inline T *&data_ptr()
+ {
+ return this->d;
+ }
+
+ inline bool operator==(const QCustomScopedPointer<T, Cleanup> &other) const
+ {
+ return this->d == other.d;
+ }
+
+ inline bool operator!=(const QCustomScopedPointer<T, Cleanup> &other) const
+ {
+ return this->d != other.d;
+ }
+
+private:
+ Q_DISABLE_COPY(QCustomScopedPointer)
+};
+
+/* Internal helper class - a handler for QShared* classes, to be used in QCustomScopedPointer */
+template <typename T>
+class QScopedPointerSharedDeleter
+{
+public:
+ static inline void cleanup(T *d)
+ {
+ if (d && !d->ref.deref())
+ delete d;
+ }
+};
+
+/* Internal.
+ This class is basically a scoped pointer pointing to a ref-counted object
+ */
+template <typename T>
+class QScopedSharedPointer : public QCustomScopedPointer<T, QScopedPointerSharedDeleter<T> >
+{
+public:
+ explicit inline QScopedSharedPointer(T *p = 0)
+ : QCustomScopedPointer<T, QScopedPointerSharedDeleter<T> >(p)
+ {
+ }
+
+ inline void detach()
+ {
+ qAtomicDetach(this->d);
+ }
+
+ inline void assign(T *other)
+ {
+ if (this->d == other)
+ return;
+ if (other)
+ other->ref.ref();
+ T *oldD = this->d;
+ this->d = other;
+ QScopedPointerSharedDeleter<T>::cleanup(oldD);
+ }
+
+ inline bool operator==(const QScopedSharedPointer<T> &other) const
+ {
+ return this->d == other.d;
+ }
+
+ inline bool operator!=(const QScopedSharedPointer<T> &other) const
+ {
+ return this->d != other.d;
+ }
+
+private:
+ Q_DISABLE_COPY(QScopedSharedPointer)
+};
+
+
+QT_END_NAMESPACE
+QT_END_HEADER
+
+#endif