Clang: Add clang refactoring

Change-Id: I2e3f36f810276da3f8dc7dcc587b06f8edb586d3
GPush-Base: d02f51b48fc752fddcdef6dcb32b3f7f6c0195a3
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/clangrefactoring/refactoringengine.cpp

@@ -0,0 +1,118 @@
+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#include "refactoringengine.h"
+
+#include <refactoringcompileroptionsbuilder.h>
+
+#include <refactoringserverinterface.h>
+#include <requestsourcelocationforrenamingmessage.h>
+
+#include <QTextCursor>
+#include <QTextDocument>
+
+#include <algorithm>
+
+namespace ClangRefactoring {
+
+using ClangBackEnd::RequestSourceLocationsForRenamingMessage;
+
+RefactoringEngine::RefactoringEngine(ClangBackEnd::RefactoringServerInterface &server,
+                                     ClangBackEnd::RefactoringClientInterface &client)
+    : server(server),
+      client(client)
+{
+}
+
+namespace {
+
+ClangBackEnd::FilePath convertToClangBackEndFilePath(const Utils::FileName &filePath)
+{
+    Utils::SmallString utf8FilePath = filePath.toString();
+
+    auto found = std::find(utf8FilePath.rbegin(), utf8FilePath.rend(), '/').base();
+
+    Utils::SmallString fileName(found, utf8FilePath.end());
+    utf8FilePath.resize(std::size_t(std::distance(utf8FilePath.begin(), --found)));
+
+    return ClangBackEnd::FilePath(std::move(utf8FilePath), std::move(fileName));
+}
+
+CppTools::ProjectFile::Kind fileKind(CppTools::ProjectPart *projectPart, const QString &filePath)
+{
+    const auto &projectFiles = projectPart->files;
+
+    auto comparePaths = [&] (const CppTools::ProjectFile &projectFile) {
+        return projectFile.path == filePath;
+    };
+
+    auto found = std::find_if(projectFiles.begin(), projectFiles.end(), comparePaths);
+
+    if (found != projectFiles.end())
+        return found->kind;
+
+    return CppTools::ProjectFile::Unclassified;
+}
+
+}
+
+void RefactoringEngine::startLocalRenaming(const QTextCursor &textCursor,
+                                           const Utils::FileName &filePath,
+                                           int revision,
+                                           CppTools::ProjectPart *projectPart,
+                                           RenameCallback &&renameSymbolsCallback)
+{
+    isUsable_ = false;
+
+    client.setLocalRenamingCallback(std::move(renameSymbolsCallback));
+
+    auto commandLine = RefactoringCompilerOptionsBuilder::build(projectPart,
+                                                                fileKind(projectPart, filePath.toString()));
+
+    commandLine.push_back(filePath.toString());
+    qDebug() << commandLine.join(" ");
+
+    RequestSourceLocationsForRenamingMessage message(convertToClangBackEndFilePath(filePath),
+                                                     uint(textCursor.blockNumber() + 1),
+                                                     uint(textCursor.positionInBlock() + 1),
+                                                     textCursor.document()->toPlainText(),
+                                                     std::move(commandLine),
+                                                     revision);
+
+
+    server.requestSourceLocationsForRenamingMessage(std::move(message));
+}
+
+bool RefactoringEngine::isUsable() const
+{
+    return isUsable_;
+}
+
+void RefactoringEngine::setUsable(bool isUsable)
+{
+    isUsable_ = isUsable;
+}
+
+} // namespace ClangRefactoring