1 files changed, 81 insertions, 0 deletions
diff --git a/src/declarative/util/qdeclarativenullablevalue_p_p.h b/src/declarative/util/qdeclarativenullablevalue_p_p.h
new file mode 100644
index 0000000..fc3f8af
--- /dev/null
+++ b/src/declarative/util/qdeclarativenullablevalue_p_p.h
@@ -0,0 +1,81 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative 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 QDECLARATIVENULLABLEVALUE_P_H
+#define QDECLARATIVENULLABLEVALUE_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.
+//
+
+QT_BEGIN_NAMESPACE
+
+template<typename T>
+struct QDeclarativeNullableValue 
+{
+    QDeclarativeNullableValue()
+    : isNull(true), value(T()) {}
+    QDeclarativeNullableValue(const QDeclarativeNullableValue<T> &o)
+    : isNull(o.isNull), value(o.value) {}
+    QDeclarativeNullableValue(const T &t)
+    : isNull(false), value(t) {}
+    QDeclarativeNullableValue<T> &operator=(const T &t)
+    { isNull = false; value = t; return *this; }
+    QDeclarativeNullableValue<T> &operator=(const QDeclarativeNullableValue<T> &o)
+    { isNull = o.isNull; value = o.value; return *this; }
+    operator T() const { return value; }
+
+    void invalidate() { isNull = true; }
+    bool isValid() const { return !isNull; }
+    bool isNull;
+    T value;
+};
+
+QT_END_NAMESPACE
+
+#endif // QDECLARATIVENULLABLEVALUE_P_H