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/codecompleter.h

@@ -0,0 +1,75 @@
+/****************************************************************************
+**
+** 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 "clangtranslationunit.h"
+#include "unsavedfiles.h"
+
+#include <codecompletion.h>
+
+#include <utf8stringvector.h>
+
+namespace ClangBackEnd {
+
+class ClangCodeCompleteResults;
+
+class CodeCompleter
+{
+public:
+    CodeCompleter() = default;
+    CodeCompleter(const TranslationUnit &translationUnit,
+                  const UnsavedFiles &unsavedFiles);
+
+    CodeCompletions complete(uint line, uint column,
+                             int funcNameStartLine = -1,
+                             int funcNameStartColumn = -1);
+
+    CompletionCorrection neededCorrection() const;
+
+private:
+    uint defaultOptions() const;
+    UnsavedFile &unsavedFile();
+
+    void tryDotArrowCorrectionIfNoResults(ClangCodeCompleteResults &results,
+                                          uint line,
+                                          uint column);
+
+    ClangCodeCompleteResults completeHelper(uint line, uint column);
+    ClangCodeCompleteResults completeSmartPointerCreation(uint line,
+                                                          uint column,
+                                                          int funcNameStartLine,
+                                                          int funcNameStartColumn);
+    ClangCodeCompleteResults completeWithArrowInsteadOfDot(uint line,
+                                                           uint column,
+                                                           uint dotPosition);
+
+private:
+    TranslationUnit translationUnit;
+    UnsavedFiles unsavedFiles;
+    CompletionCorrection neededCorrection_ = CompletionCorrection::NoCorrection;
+};
+
+} // namespace ClangBackEnd