Clang: Locator filter for the symbol database

There are no symbol queries for the locator filters. The signature
generation is still not implemented but for simple cases it should work.

Change-Id: Ic6b04fbe1e7e057892f194ac139615c47d6ec33f
Reviewed-by: Ivan Donchevskii <ivan.donchevskii@qt.io>

src/plugins/clangrefactoring/qtcreatoreditormanager.cpp

@@ -0,0 +1,44 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 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.
+**
+****************************************************************************/
+
+#include "qtcreatoreditormanager.h"
+
+#include <coreplugin/editormanager/editormanager.h>
+
+#include <filepathcachinginterface.h>
+
+#include <utils/smallstring.h>
+
+namespace ClangRefactoring {
+
+Core::IEditor *ClangRefactoring::QtCreatorEditorManager::openEditorAt(ClangBackEnd::FilePathId filePathId,
+                                                                      Utils::LineColumn lineColumn)
+{
+    const QString filePath = m_filePathCache.filePath(filePathId).toQString();
+
+    return Core::EditorManager::openEditorAt(filePath, lineColumn.line, lineColumn.column - 1);
+}
+
+} // namespace ClangRefactoring