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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 245 insertions, 0 deletions

diff --git a/src/corelib/tools/qscopedpointer.h b/src/corelib/tools/qscopedpointer.h
new file mode 100644
index 0000000000..92bccf5961
--- /dev/null
+++ b/src/corelib/tools/qscopedpointer.h
@@ -0,0 +1,245 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCOPEDPOINTER_H
+#define QSCOPEDPOINTER_H
+
+#include <QtCore/qglobal.h>
+
+QT_BEGIN_HEADER
+QT_BEGIN_NAMESPACE
+QT_MODULE(Core)
+
+template <typename T>
+struct QScopedPointerDeleter
+{
+    static inline void cleanup(T *pointer)
+    {
+        // Enforce a complete type.
+        // If you get a compile error here, read the section on forward declared
+        // classes in the QScopedPointer documentation.
+        typedef char IsIncompleteType[ sizeof(T) ? 1 : -1 ];
+        (void) sizeof(IsIncompleteType);
+
+        delete pointer;
+    }
+};
+
+template <typename T>
+struct QScopedPointerArrayDeleter
+{
+    static inline void cleanup(T *pointer)
+    {
+        // Enforce a complete type.
+        // If you get a compile error here, read the section on forward declared
+        // classes in the QScopedPointer documentation.
+        typedef char IsIncompleteType[ sizeof(T) ? 1 : -1 ];
+        (void) sizeof(IsIncompleteType);
+
+        delete [] pointer;
+    }
+};
+
+struct QScopedPointerPodDeleter
+{
+    static inline void cleanup(void *pointer) { if (pointer) qFree(pointer); }
+};
+
+template <typename T, typename Cleanup = QScopedPointerDeleter<T> >
+class QScopedPointer
+{
+#ifndef Q_CC_NOKIAX86
+    typedef T *QScopedPointer:: *RestrictedBool;
+#endif
+public:
+    explicit inline QScopedPointer(T *p = 0) : d(p)
+    {
+    }
+
+    inline ~QScopedPointer()
+    {
+        T *oldD = this->d;
+        Cleanup::cleanup(oldD);
+        this->d = 0;
+    }
+
+    inline T &operator*() const
+    {
+        Q_ASSERT(d);
+        return *d;
+    }
+
+    inline T *operator->() const
+    {
+        Q_ASSERT(d);
+        return d;
+    }
+
+    inline bool operator!() const
+    {
+        return !d;
+    }
+
+#if defined(Q_CC_NOKIAX86) || defined(Q_QDOC)
+    inline operator bool() const
+    {
+        return isNull() ? 0 : &QScopedPointer::d;
+    }
+#else
+    inline operator RestrictedBool() const
+    {
+        return isNull() ? 0 : &QScopedPointer::d;
+    }
+#endif
+
+    inline T *data() const
+    {
+        return d;
+    }
+
+    inline bool isNull() const
+    {
+        return !d;
+    }
+
+    inline void reset(T *other = 0)
+    {
+        if (d == other)
+            return;
+        T *oldD = d;
+        d = other;
+        Cleanup::cleanup(oldD);
+    }
+
+    inline T *take()
+    {
+        T *oldD = d;
+        d = 0;
+        return oldD;
+    }
+
+    inline void swap(QScopedPointer<T, Cleanup> &other)
+    {
+        qSwap(d, other.d);
+    }
+
+    typedef T *pointer;
+
+protected:
+    T *d;
+
+private:
+    Q_DISABLE_COPY(QScopedPointer)
+};
+
+template <class T, class Cleanup>
+inline bool operator==(const QScopedPointer<T, Cleanup> &lhs, const QScopedPointer<T, Cleanup> &rhs)
+{
+    return lhs.data() == rhs.data();
+}
+
+template <class T, class Cleanup>
+inline bool operator!=(const QScopedPointer<T, Cleanup> &lhs, const QScopedPointer<T, Cleanup> &rhs)
+{
+    return lhs.data() != rhs.data();
+}
+
+template <class T, class Cleanup>
+Q_INLINE_TEMPLATE void qSwap(QScopedPointer<T, Cleanup> &p1, QScopedPointer<T, Cleanup> &p2)
+{ p1.swap(p2); }
+
+#ifndef QT_NO_STL
+QT_END_NAMESPACE
+namespace std {
+    template <class T, class Cleanup>
+    Q_INLINE_TEMPLATE void swap(QT_PREPEND_NAMESPACE(QScopedPointer)<T, Cleanup> &p1, QT_PREPEND_NAMESPACE(QScopedPointer)<T, Cleanup> &p2)
+    { p1.swap(p2); }
+}
+QT_BEGIN_NAMESPACE
+#endif
+
+
+
+namespace QtPrivate {
+    template <typename X, typename Y> struct QScopedArrayEnsureSameType;
+    template <typename X> struct QScopedArrayEnsureSameType<X,X> { typedef X* Type; };
+    template <typename X> struct QScopedArrayEnsureSameType<const X, X> { typedef X* Type; };
+}
+
+template <typename T, typename Cleanup = QScopedPointerArrayDeleter<T> >
+class QScopedArrayPointer : public QScopedPointer<T, Cleanup>
+{
+public:
+    template <typename D>
+    explicit inline QScopedArrayPointer(D *p = 0, typename QtPrivate::QScopedArrayEnsureSameType<T,D>::Type = 0)
+        : QScopedPointer<T, Cleanup>(p)
+    {
+    }
+
+    inline T &operator[](int i)
+    {
+        return this->d[i];
+    }
+
+    inline const T &operator[](int i) const
+    {
+        return this->d[i];
+    }
+
+private:
+    explicit inline QScopedArrayPointer(void *) {
+        // Enforce the same type.
+
+        // If you get a compile error here, make sure you declare
+        // QScopedArrayPointer with the same template type as you pass to the
+        // constructor. See also the QScopedPointer documentation.
+
+        // Storing a scalar array as a pointer to a different type is not
+        // allowed and results in undefined behavior.
+    }
+
+    Q_DISABLE_COPY(QScopedArrayPointer)
+};
+
+QT_END_NAMESPACE
+QT_END_HEADER
+
+#endif // QSCOPEDPOINTER_H