Clang: Add diagnostics

Diagnostics are now moved to the clang backend process. Fixits are
supported too.

Change-Id: I20faacf466bbf78dec479220c3d7b336a47bc453
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

src/tools/clangbackend/ipcsource/sourcerange.cpp

@@ -0,0 +1,64 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://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 http://www.qt.io/terms-conditions.  For further information
+** use the contact form at http://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 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, The Qt Company gives you certain additional
+** rights.  These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#include "sourcerange.h"
+
+#include <sourcerangecontainer.h>
+
+namespace ClangBackEnd {
+
+SourceRange::SourceRange()
+    : cxSourceRange(clang_getNullRange())
+{
+}
+
+SourceLocation SourceRange::start() const
+{
+    return SourceLocation(clang_getRangeStart(cxSourceRange));
+}
+
+SourceLocation SourceRange::end() const
+{
+    return SourceLocation(clang_getRangeEnd(cxSourceRange));
+}
+
+SourceRangeContainer SourceRange::toSourceRangeContainer() const
+{
+    return SourceRangeContainer(start().toSourceLocationContainer(),
+                                end().toSourceLocationContainer());
+}
+
+SourceRange::SourceRange(CXSourceRange cxSourceRange)
+    : cxSourceRange(cxSourceRange)
+{
+}
+
+} // namespace ClangBackEnd
+