Clang: Rename directory ipcsource to source

Now it's in accordance with clangrefactoringbackend/source and
clangpchmanagerbackend/source.

Change-Id: I939cfc72cffb8fcde0649f125e6efb6670d1cbc3
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/tools/clangbackend/source/diagnosticset.h

@@ -0,0 +1,81 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 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 "diagnostic.h"
+#include "diagnosticsetiterator.h"
+
+#include <clang-c/Index.h>
+
+#include <QVector>
+
+#include <functional>
+
+namespace ClangBackEnd {
+
+class DiagnosticSetIterator;
+
+class DiagnosticSet
+{
+    friend class TranslationUnit;
+    friend class Diagnostic;
+
+public:
+    using ConstIterator = DiagnosticSetIterator;
+
+public:
+    ~DiagnosticSet();
+
+    DiagnosticSet(const DiagnosticSet &) = delete;
+    const DiagnosticSet &operator=(const DiagnosticSet &) = delete;
+
+    DiagnosticSet(DiagnosticSet &&other);
+    DiagnosticSet &operator=(DiagnosticSet &&other);
+
+    uint size() const;
+    bool isNull() const;
+
+    Diagnostic at(uint index) const;
+
+    Diagnostic front() const;
+    Diagnostic back() const;
+
+    ConstIterator begin() const;
+    ConstIterator end() const;
+
+    using IsAcceptedDiagnostic = std::function<bool (const Diagnostic &)>;
+    QVector<DiagnosticContainer> toDiagnosticContainers() const;
+    QVector<DiagnosticContainer> toDiagnosticContainers(
+            const IsAcceptedDiagnostic &isAcceptedDiagnostic) const;
+
+private:
+    DiagnosticSet(CXDiagnosticSet cxDiagnosticSet);
+
+private:
+    CXDiagnosticSet cxDiagnosticSet;
+};
+
+} // namespace ClangBackEnd