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diff --git a/src/lib/corelib/loader/itemreadervisitorstate.h b/src/lib/corelib/loader/itemreadervisitorstate.h
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qbs.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef QBS_ITEMREADERVISITORSTATE_H
+#define QBS_ITEMREADERVISITORSTATE_H
+
+#include <tools/deprecationwarningmode.h>
+#include <tools/set.h>
+
+#include <QtCore/qstringlist.h>
+
+#include <memory>
+
+namespace qbs {
+namespace Internal {
+class Item;
+class ItemPool;
+class ItemReaderCache;
+class Logger;
+
+class ItemReaderVisitorState
+{
+public:
+    ItemReaderVisitorState(ItemReaderCache &cache, Logger &logger);
+
+    Logger &logger() { return m_logger; }
+
+    Item *readFile(const QString &filePath, const QStringList &searchPaths, ItemPool *itemPool);
+
+    void findDirectoryEntries(const QString &dirPath, QStringList *entries) const;
+
+    Item *mostDerivingItem() const;
+    void setMostDerivingItem(Item *item);
+
+    void setDeprecationWarningMode(DeprecationWarningMode mode) { m_deprecationWarningMode = mode; }
+    DeprecationWarningMode deprecationWarningMode() const { return m_deprecationWarningMode; }
+
+private:
+    DeprecationWarningMode m_deprecationWarningMode = defaultDeprecationWarningMode();
+    ItemReaderCache &m_cache;
+    Logger &m_logger;
+    Item *m_mostDerivingItem = nullptr;
+};
+
+} // namespace Internal
+} // namespace qbs
+
+#endif // Include guard.