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/clangstring.h

@@ -0,0 +1,135 @@
+/****************************************************************************
+**
+** 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 <clang-c/CXString.h>
+
+#include <utf8string.h>
+
+#include <cstring>
+#include <ostream>
+
+namespace ClangBackEnd {
+
+class ClangString
+{
+public:
+    ClangString(CXString cxString)
+        : cxString(cxString)
+    {
+    }
+
+    ~ClangString()
+    {
+        clang_disposeString(cxString);
+    }
+
+    ClangString(const ClangString &) = delete;
+    const ClangString &operator=(const ClangString &) = delete;
+
+
+    ClangString(ClangString &&other)
+        : cxString(std::move(other.cxString))
+    {
+        other.cxString.data = nullptr;
+        other.cxString.private_flags = 0;
+    }
+
+
+    ClangString &operator=(ClangString &&other)
+    {
+        if (this != &other) {
+            clang_disposeString(cxString);
+            cxString = std::move(other.cxString);
+            other.cxString.data = nullptr;
+            other.cxString.private_flags = 0;
+        }
+
+        return *this;
+    }
+
+    const char *cString() const
+    {
+        return clang_getCString(cxString);
+    }
+
+    operator Utf8String() const
+    {
+        return Utf8String(cString(), -1);
+    }
+
+    bool isNull() const
+    {
+        return cxString.data == nullptr;
+    }
+
+    bool hasContent() const
+    {
+        return !isNull() && std::strlen(cString()) > 0;
+    }
+
+    friend bool operator==(const ClangString &first, const ClangString &second)
+    {
+        return std::strcmp(first.cString(), second.cString()) == 0;
+    }
+
+    template<std::size_t Size>
+    friend bool operator==(const ClangString &first, const char(&second)[Size])
+    {
+        return std::strncmp(first.cString(), second, Size) == 0; // Size includes \0
+    }
+
+    template<std::size_t Size>
+    friend bool operator==(const char(&first)[Size], const ClangString &second)
+    {
+        return second == first;
+    }
+    template<typename Type,
+             typename = typename std::enable_if<std::is_pointer<Type>::value>::type
+             >
+    friend bool operator==(const ClangString &first, Type second)
+    {
+        return std::strcmp(first.cString(), second) == 0;
+    }
+
+    template<typename Type,
+             typename = typename std::enable_if<std::is_pointer<Type>::value>::type
+             >
+    friend bool operator==(Type first, const ClangString &second)
+    {
+        return second == first;
+    }
+
+    friend std::ostream &operator<<(std::ostream &os, const ClangString &string)
+    {
+        return os << string.cString();
+    }
+
+private:
+    CXString cxString;
+};
+
+} // namespace ClangBackEnd