Clang: Add symbol indexer

Change-Id: I8ff879631ae022bc870431628be002903360369c
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/tools/clangrefactoringbackend/source/symbolindexer.h

@@ -0,0 +1,48 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** 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 General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** 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-3.0.html.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "symbolscollectorinterface.h"
+#include "symbolstorageinterface.h"
+
+#include <projectpartcontainerv2.h>
+
+namespace ClangBackEnd {
+
+class SymbolIndexer
+{
+public:
+    SymbolIndexer(SymbolsCollectorInterface &symbolsCollector,
+                  SymbolStorageInterface &symbolStorage);
+
+    void updateProjectParts(V2::ProjectPartContainers &&projectParts);
+
+private:
+    SymbolsCollectorInterface &m_symbolsCollector;
+    SymbolStorageInterface &m_symbolStorage;
+};
+
+} // namespace ClangBackEnd