Clang: Add symbols collector

Change-Id: I64c25eef8eaa6cc6c3ff09d41866972b6c7248d0
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/tools/clangrefactoringbackend/source/sourcelocationentry.h

@@ -0,0 +1,79 @@
+/****************************************************************************
+**
+** 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 <limits>
+#include <vector>
+#include <iosfwd>
+
+using uint = unsigned int;
+
+namespace ClangBackEnd {
+
+enum class SymbolType
+{
+    Declaration,
+    DeclarationReference
+};
+
+class LineColumn
+{
+public:
+    LineColumn(uint line, uint column)
+        : line(line),
+          column(column)
+    {}
+
+    uint line =  0;
+    uint column = 0;
+};
+
+class SourceLocationEntry
+{
+public:
+    SourceLocationEntry(uint symbolId,
+                        uint fileId,
+                        LineColumn lineColumn,
+                        SymbolType symbolType)
+        : symbolId(symbolId),
+          fileId(fileId),
+          line(lineColumn.line),
+          column(lineColumn.column),
+          symbolType(symbolType)
+    {}
+
+    uint symbolId = 0;
+    uint fileId = std::numeric_limits<uint>::max();
+    uint line =  0;
+    uint column = 0;
+    SymbolType symbolType;
+};
+
+using SourceLocationEntries = std::vector<SourceLocationEntry>;
+
+std::ostream &operator<<(std::ostream &out, const SourceLocationEntry &entry);
+
+} // namespace ClangBackEnd