Clang: use local renaming based on ClangCodeModel

Provide refactoring engine for ClangCodeModel and
implement missing methods.

Change-Id: If5c913e0c5a7941cd2ced54d0fcfa4d625eadc93
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>

30 files changed, 275 insertions, 21 deletions

diff --git a/src/libs/clangsupport/requestreferencesmessage.cpp b/src/libs/clangsupport/requestreferencesmessage.cpp
index 0527db59d6..df42d690ae 100644
--- a/src/libs/clangsupport/requestreferencesmessage.cpp
+++ b/src/libs/clangsupport/requestreferencesmessage.cpp
@@ -41,6 +41,7 @@ QDebug operator<<(QDebug debug, const RequestReferencesMessage &message)
     debug.nospace() << message.m_ticketNumber << ", ";
     debug.nospace() << message.m_line << ", ";
     debug.nospace() << message.m_column << ", ";
+    debug.nospace() << message.m_local << ", ";
 
     debug.nospace() << ")";
 
@@ -54,6 +55,7 @@ std::ostream &operator<<(std::ostream &os, const RequestReferencesMessage &messa
        << message.m_ticketNumber << ", "
        << message.m_line << ", "
        << message.m_column << ", "
+       << message.m_local << ", "
        << ")";
 
      return os;
diff --git a/src/libs/clangsupport/requestreferencesmessage.h b/src/libs/clangsupport/requestreferencesmessage.h
index fbbd934c43..004e718fd6 100644
--- a/src/libs/clangsupport/requestreferencesmessage.h
+++ b/src/libs/clangsupport/requestreferencesmessage.h
@@ -39,11 +39,13 @@ public:
     RequestReferencesMessage() = default;
     RequestReferencesMessage(const FileContainer &fileContainer,
                              quint32 line,
-                             quint32 column)
+                             quint32 column,
+                             bool local = false)
         : m_fileContainer(fileContainer)
         , m_ticketNumber(++ticketCounter)
         , m_line(line)
         , m_column(column)
+        , m_local(local)
     {
     }
 
@@ -67,12 +69,18 @@ public:
         return m_ticketNumber;
     }
 
+    bool local() const
+    {
+        return m_local;
+    }
+
     friend QDataStream &operator<<(QDataStream &out, const RequestReferencesMessage &message)
     {
         out << message.m_fileContainer;
         out << message.m_ticketNumber;
         out << message.m_line;
         out << message.m_column;
+        out << message.m_local;
 
         return out;
     }
@@ -83,6 +91,7 @@ public:
         in >> message.m_ticketNumber;
         in >> message.m_line;
         in >> message.m_column;
+        in >> message.m_local;
 
         return in;
     }
@@ -93,7 +102,8 @@ public:
         return first.m_ticketNumber == second.m_ticketNumber
             && first.m_line == second.m_line
             && first.m_column == second.m_column
-            && first.m_fileContainer == second.m_fileContainer;
+            && first.m_fileContainer == second.m_fileContainer
+            && first.m_local == second.m_local;
     }
 
     friend CLANGSUPPORT_EXPORT QDebug operator<<(QDebug debug, const RequestReferencesMessage &message);
@@ -104,6 +114,7 @@ private:
     quint64 m_ticketNumber = 0;
     quint32 m_line = 0;
     quint32 m_column = 0;
+    bool m_local = false;
     static CLANGSUPPORT_EXPORT quint64 ticketCounter;
 };
 
diff --git a/src/plugins/clangcodemodel/clangbackendcommunicator.cpp b/src/plugins/clangcodemodel/clangbackendcommunicator.cpp
index fc5603b0c0..00f5c9a8e6 100644
--- a/src/plugins/clangcodemodel/clangbackendcommunicator.cpp
+++ b/src/plugins/clangcodemodel/clangbackendcommunicator.cpp
@@ -377,7 +377,19 @@ QFuture<CppTools::CursorInfo> BackendCommunicator::requestReferences(
     m_sender->requestReferences(message);
 
     return m_receiver.addExpectedReferencesMessage(message.ticketNumber(), textDocument,
-                                                      localUses);
+                                                   localUses);
+}
+
+QFuture<CppTools::CursorInfo> BackendCommunicator::requestLocalReferences(
+        const FileContainer &fileContainer,
+        quint32 line,
+        quint32 column,
+        QTextDocument *textDocument)
+{
+    const RequestReferencesMessage message(fileContainer, line, column, true);
+    m_sender->requestReferences(message);
+
+    return m_receiver.addExpectedReferencesMessage(message.ticketNumber(), textDocument);
 }
 
 QFuture<CppTools::SymbolInfo> BackendCommunicator::requestFollowSymbol(
diff --git a/src/plugins/clangcodemodel/clangbackendcommunicator.h b/src/plugins/clangcodemodel/clangbackendcommunicator.h
index 86054e566f..baafa3c2a6 100644
--- a/src/plugins/clangcodemodel/clangbackendcommunicator.h
+++ b/src/plugins/clangcodemodel/clangbackendcommunicator.h
@@ -57,6 +57,7 @@ public:
     using FileContainer = ClangBackEnd::FileContainer;
     using FileContainers = QVector<ClangBackEnd::FileContainer>;
     using ProjectPartContainers = QVector<ClangBackEnd::ProjectPartContainer>;
+    using LocalUseMap = CppTools::SemanticInfo::LocalUseMap;
 
 public:
     BackendCommunicator();
@@ -75,7 +76,12 @@ public:
             quint32 line,
             quint32 column,
             QTextDocument *textDocument,
-            const CppTools::SemanticInfo::LocalUseMap &localUses);
+            const LocalUseMap &localUses);
+    QFuture<CppTools::CursorInfo> requestLocalReferences(
+            const FileContainer &fileContainer,
+            quint32 line,
+            quint32 column,
+            QTextDocument *textDocument);
     QFuture<CppTools::SymbolInfo> requestFollowSymbol(const FileContainer &curFileContainer,
                                                       const QVector<Utf8String> &dependentFiles,
                                                       quint32 line,
diff --git a/src/plugins/clangcodemodel/clangbackendreceiver.h b/src/plugins/clangcodemodel/clangbackendreceiver.h
index d67db73223..d7a966eae9 100644
--- a/src/plugins/clangcodemodel/clangbackendreceiver.h
+++ b/src/plugins/clangcodemodel/clangbackendreceiver.h
@@ -56,7 +56,8 @@ public:
     QFuture<CppTools::CursorInfo>
     addExpectedReferencesMessage(quint64 ticket,
                                  QTextDocument *textDocument,
-                                 const CppTools::SemanticInfo::LocalUseMap &localUses);
+                                 const CppTools::SemanticInfo::LocalUseMap &localUses
+                                     = CppTools::SemanticInfo::LocalUseMap());
     QFuture<CppTools::SymbolInfo> addExpectedRequestFollowSymbolMessage(quint64 ticket);
     bool isExpectingCodeCompletedMessage() const;
 
diff --git a/src/plugins/clangcodemodel/clangcodemodel.pro b/src/plugins/clangcodemodel/clangcodemodel.pro
index bc37ba54b9..55a3bf4572 100644
--- a/src/plugins/clangcodemodel/clangcodemodel.pro
+++ b/src/plugins/clangcodemodel/clangcodemodel.pro
@@ -33,6 +33,7 @@ SOURCES += \
     clangpreprocessorassistproposalitem.cpp \
     clangprojectsettings.cpp \
     clangprojectsettingswidget.cpp \
+    clangrefactoringengine.cpp \
     clangtextmark.cpp \
     clanguiheaderondiskmanager.cpp \
     clangutils.cpp
@@ -69,6 +70,7 @@ HEADERS += \
     clangpreprocessorassistproposalitem.h \
     clangprojectsettings.h \
     clangprojectsettingswidget.h \
+    clangrefactoringengine.h \
     clangtextmark.h \
     clanguiheaderondiskmanager.h \
     clangutils.h
diff --git a/src/plugins/clangcodemodel/clangcodemodel.qbs b/src/plugins/clangcodemodel/clangcodemodel.qbs
index bce2f967cd..1733a26e60 100644
--- a/src/plugins/clangcodemodel/clangcodemodel.qbs
+++ b/src/plugins/clangcodemodel/clangcodemodel.qbs
@@ -92,6 +92,8 @@ QtcPlugin {
         "clangprojectsettingswidget.cpp",
         "clangprojectsettingswidget.h",
         "clangprojectsettingswidget.ui",
+        "clangrefactoringengine.cpp",
+        "clangrefactoringengine.h",
         "clangtextmark.cpp",
         "clangtextmark.h",
         "clanguiheaderondiskmanager.cpp",
diff --git a/src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp b/src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp
index 4735c8497b..84667dd652 100644
--- a/src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp
+++ b/src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp
@@ -350,6 +350,23 @@ ClangEditorDocumentProcessor::cursorInfo(const CppTools::CursorInfoParams &param
                                             localUses);
 }
 
+QFuture<CppTools::CursorInfo> ClangEditorDocumentProcessor::requestLocalReferences(
+        const QTextCursor &cursor)
+{
+    int line, column;
+    convertPosition(cursor, &line, &column);
+    ++column; // for 1-based columns
+
+    // TODO: check that by highlighting items
+    if (!isCursorOnIdentifier(cursor))
+        return defaultCursorInfoFuture();
+
+    return m_communicator.requestLocalReferences(simpleFileContainer(),
+                                                 static_cast<quint32>(line),
+                                                 static_cast<quint32>(column),
+                                                 textDocument());
+}
+
 static QVector<Utf8String> prioritizeByBaseName(const QString &curPath,
                                                 const ::Utils::FileNameList &fileDeps)
 {
diff --git a/src/plugins/clangcodemodel/clangeditordocumentprocessor.h b/src/plugins/clangcodemodel/clangeditordocumentprocessor.h
index a040cba256..328adb0143 100644
--- a/src/plugins/clangcodemodel/clangeditordocumentprocessor.h
+++ b/src/plugins/clangcodemodel/clangeditordocumentprocessor.h
@@ -86,6 +86,7 @@ public:
     void setParserConfig(const CppTools::BaseEditorDocumentParser::Configuration config) override;
 
     QFuture<CppTools::CursorInfo> cursorInfo(const CppTools::CursorInfoParams &params) override;
+    QFuture<CppTools::CursorInfo> requestLocalReferences(const QTextCursor &cursor) override;
     QFuture<CppTools::SymbolInfo> requestFollowSymbol(int line, int column) override;
 
     ClangBackEnd::FileContainer fileContainerWithArguments() const;
diff --git a/src/plugins/clangcodemodel/clangmodelmanagersupport.cpp b/src/plugins/clangcodemodel/clangmodelmanagersupport.cpp
index df1e96869c..f73c5fe4e4 100644
--- a/src/plugins/clangcodemodel/clangmodelmanagersupport.cpp
+++ b/src/plugins/clangcodemodel/clangmodelmanagersupport.cpp
@@ -29,6 +29,7 @@
 #include "clangeditordocumentprocessor.h"
 #include "clangutils.h"
 #include "clangfollowsymbol.h"
+#include "clangrefactoringengine.h"
 
 #include <coreplugin/editormanager/editormanager.h>
 #include <cpptools/cppfollowsymbolundercursor.h>
@@ -67,6 +68,7 @@ static CppTools::CppModelManager *cppModelManager()
 
 ModelManagerSupportClang::ModelManagerSupportClang()
     : m_completionAssistProvider(m_communicator)
+    , m_refactoringEngine(new RefactoringEngine)
 {
     QTC_CHECK(!m_instance);
     m_instance = this;
@@ -114,6 +116,11 @@ CppTools::FollowSymbolInterface &ModelManagerSupportClang::followSymbolInterface
     return *m_followSymbol;
 }
 
+CppTools::RefactoringEngineInterface &ModelManagerSupportClang::refactoringEngineInterface()
+{
+    return *m_refactoringEngine;
+}
+
 CppTools::BaseEditorDocumentProcessor *ModelManagerSupportClang::editorDocumentProcessor(
         TextEditor::TextDocument *baseTextDocument)
 {
diff --git a/src/plugins/clangcodemodel/clangmodelmanagersupport.h b/src/plugins/clangcodemodel/clangmodelmanagersupport.h
index f87ac11923..e87a7f162e 100644
--- a/src/plugins/clangcodemodel/clangmodelmanagersupport.h
+++ b/src/plugins/clangcodemodel/clangmodelmanagersupport.h
@@ -42,7 +42,10 @@ QT_END_NAMESPACE
 
 namespace Core { class IDocument; }
 namespace TextEditor { class TextEditorWidget; }
-namespace CppTools { class FollowSymbolInterface; }
+namespace CppTools {
+class FollowSymbolInterface;
+class RefactoringEngineInterface;
+} // namespace CppTools
 
 namespace ClangCodeModel {
 namespace Internal {
@@ -61,6 +64,7 @@ public:
     CppTools::BaseEditorDocumentProcessor *editorDocumentProcessor(
                 TextEditor::TextDocument *baseTextDocument) override;
     CppTools::FollowSymbolInterface &followSymbolInterface() override;
+    CppTools::RefactoringEngineInterface &refactoringEngineInterface() override;
 
     BackendCommunicator &communicator();
     QString dummyUiHeaderOnDiskDirPath() const;
@@ -105,6 +109,7 @@ private:
     BackendCommunicator m_communicator;
     ClangCompletionAssistProvider m_completionAssistProvider;
     std::unique_ptr<CppTools::FollowSymbolInterface> m_followSymbol;
+    std::unique_ptr<CppTools::RefactoringEngineInterface> m_refactoringEngine;
 };
 
 class ModelManagerSupportProviderClang : public CppTools::ModelManagerSupportProvider
diff --git a/src/plugins/clangcodemodel/clangrefactoringengine.cpp b/src/plugins/clangcodemodel/clangrefactoringengine.cpp
new file mode 100644
index 0000000000..919ee5c5f7
--- /dev/null
+++ b/src/plugins/clangcodemodel/clangrefactoringengine.cpp
@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** 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 "clangrefactoringengine.h"
+#include "clangeditordocumentprocessor.h"
+
+#include <utils/textutils.h>
+#include <utils/qtcassert.h>
+
+namespace ClangCodeModel {
+
+void RefactoringEngine::startLocalRenaming(const CppTools::CursorInEditor &data,
+                                           CppTools::ProjectPart *projectPart,
+                                           RenameCallback &&renameSymbolsCallback)
+{
+    Internal::ClangEditorDocumentProcessor *processor = Internal::ClangEditorDocumentProcessor::get(
+                data.filePath().toString());
+    const int startRevision = data.cursor().document()->revision();
+
+    using ClangBackEnd::SourceLocationsContainer;
+    auto defaultCallback = [renameSymbolsCallback, startRevision]() {
+        return renameSymbolsCallback(QString(), SourceLocationsContainer{}, startRevision);
+    };
+
+    if (!processor)
+        return defaultCallback();
+
+    QFuture<CppTools::CursorInfo> future = processor->requestLocalReferences(data.cursor());
+    if (future.isCanceled())
+        return defaultCallback();
+
+    // QFuture::waitForFinished seems to block completely, not even
+    // allowing to process events from QLocalSocket.
+    while (!future.isFinished()) {
+        if (future.isCanceled())
+            return defaultCallback();
+
+        QTC_ASSERT(startRevision == data.cursor().document()->revision(), return;);
+        QCoreApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
+    }
+
+    const CppTools::CursorInfo info = future.result();
+    if (info.useRanges.empty())
+        return defaultCallback();
+
+    QTextCursor cursor = Utils::Text::wordStartCursor(data.cursor());
+    cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor,
+                        info.useRanges.first().length);
+    const QString symbolName = cursor.selectedText();
+    ClangBackEnd::SourceLocationsContainer container;
+    for (auto& use : info.useRanges)
+        container.insertSourceLocation(ClangBackEnd::FilePathId(), use.line, use.column, use.length);
+    renameSymbolsCallback(symbolName, container, data.cursor().document()->revision());
+}
+
+}
diff --git a/src/plugins/clangcodemodel/clangrefactoringengine.h b/src/plugins/clangcodemodel/clangrefactoringengine.h
new file mode 100644
index 0000000000..e72a4f5f4d
--- /dev/null
+++ b/src/plugins/clangcodemodel/clangrefactoringengine.h
@@ -0,0 +1,48 @@
+/****************************************************************************
+**
+** 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 <cpptools/refactoringengineinterface.h>
+
+namespace ClangBackEnd {
+class RefactoringClientInterface;
+class RefactoringServerInterface;
+}
+
+namespace ClangCodeModel {
+
+class RefactoringEngine : public CppTools::RefactoringEngineInterface
+{
+public:
+    void startLocalRenaming(const CppTools::CursorInEditor &data,
+                            CppTools::ProjectPart *projectPart,
+                            RenameCallback &&renameSymbolsCallback) override;
+    void globalRename(const CppTools::CursorInEditor &, CppTools::UsagesCallback &&,
+                      const QString &) override {}
+    void findUsages(const CppTools::CursorInEditor &, CppTools::UsagesCallback &&) const override {}
+};
+
+} // namespace ClangRefactoring
diff --git a/src/plugins/cppeditor/cppeditorwidget.cpp b/src/plugins/cppeditor/cppeditorwidget.cpp
index 7b523b2421..bb8755f7b1 100644
--- a/src/plugins/cppeditor/cppeditorwidget.cpp
+++ b/src/plugins/cppeditor/cppeditorwidget.cpp
@@ -570,6 +570,10 @@ void CppEditorWidget::renameSymbolUnderCursor()
     if (!projPart)
         return;
 
+    if (d->m_localRenaming.isActive()
+            && d->m_localRenaming.isSameSelection(textCursor().position())) {
+        return;
+    }
     d->m_useSelectionsUpdater.abortSchedule();
 
     QPointer<CppEditorWidget> cppEditorWidget = this;
@@ -588,6 +592,7 @@ void CppEditorWidget::renameSymbolUnderCursor()
                                                        static_cast<uint>(symbolName.size()),
                                                        cppEditorWidget);
                 setExtraSelections(TextEditor::TextEditorWidget::CodeSemanticsSelection, selections);
+                d->m_localRenaming.stop();
                 d->m_localRenaming.updateSelectionsForVariableUnderCursor(selections);
             }
             if (!d->m_localRenaming.start())
diff --git a/src/plugins/cppeditor/cpplocalrenaming.cpp b/src/plugins/cppeditor/cpplocalrenaming.cpp
index fd989c782c..14a7a93fc2 100644
--- a/src/plugins/cppeditor/cpplocalrenaming.cpp
+++ b/src/plugins/cppeditor/cpplocalrenaming.cpp
@@ -242,6 +242,15 @@ bool CppLocalRenaming::isWithinRenameSelection(int position)
     return renameSelectionBegin() <= position && position <= renameSelectionEnd();
 }
 
+bool CppLocalRenaming::isSameSelection(int cursorPosition) const
+{
+    if (!isActive())
+        return false;
+
+    const QTextEdit::ExtraSelection &sel = m_selections[m_renameSelectionIndex];
+    return (sel.cursor.position() <= cursorPosition && cursorPosition <= sel.cursor.anchor());
+}
+
 bool CppLocalRenaming::findRenameSelection(int cursorPosition)
 {
     for (int i = 0, total = m_selections.size(); i < total; ++i) {
diff --git a/src/plugins/cppeditor/cpplocalrenaming.h b/src/plugins/cppeditor/cpplocalrenaming.h
index c71bcdb5d8..61c1d1ca11 100644
--- a/src/plugins/cppeditor/cpplocalrenaming.h
+++ b/src/plugins/cppeditor/cpplocalrenaming.h
@@ -60,6 +60,7 @@ public:
     void onContentsChangeOfEditorWidgetDocument(int position, int charsRemoved, int charsAdded);
 
     void updateSelectionsForVariableUnderCursor(const QList<QTextEdit::ExtraSelection> &selections);
+    bool isSameSelection(int cursorPosition) const;
 
 signals:
     void finished();
diff --git a/src/plugins/cpptools/baseeditordocumentprocessor.h b/src/plugins/cpptools/baseeditordocumentprocessor.h
index 1ac31a6ebc..b3f96d466d 100644
--- a/src/plugins/cpptools/baseeditordocumentprocessor.h
+++ b/src/plugins/cpptools/baseeditordocumentprocessor.h
@@ -76,6 +76,7 @@ public:
     virtual void setParserConfig(const BaseEditorDocumentParser::Configuration config);
 
     virtual QFuture<CursorInfo> cursorInfo(const CursorInfoParams &params) = 0;
+    virtual QFuture<CursorInfo> requestLocalReferences(const QTextCursor &cursor) = 0;
     virtual QFuture<SymbolInfo> requestFollowSymbol(int line, int column) = 0;
 
 public:
diff --git a/src/plugins/cpptools/builtineditordocumentprocessor.cpp b/src/plugins/cpptools/builtineditordocumentprocessor.cpp
index bfdabe5362..ce282e3685 100644
--- a/src/plugins/cpptools/builtineditordocumentprocessor.cpp
+++ b/src/plugins/cpptools/builtineditordocumentprocessor.cpp
@@ -260,6 +260,24 @@ BuiltinEditorDocumentProcessor::cursorInfo(const CursorInfoParams &params)
     return BuiltinCursorInfo::run(params);
 }
 
+QFuture<CursorInfo> BuiltinEditorDocumentProcessor::requestLocalReferences(const QTextCursor &)
+{
+    QFutureInterface<CppTools::CursorInfo> futureInterface;
+    futureInterface.reportResult(CppTools::CursorInfo());
+    futureInterface.reportFinished();
+
+    return futureInterface.future();
+}
+
+QFuture<SymbolInfo> BuiltinEditorDocumentProcessor::requestFollowSymbol(int, int)
+{
+    QFutureInterface<CppTools::SymbolInfo> futureInterface;
+    futureInterface.reportResult(CppTools::SymbolInfo());
+    futureInterface.reportFinished();
+
+    return futureInterface.future();
+}
+
 void BuiltinEditorDocumentProcessor::onParserFinished(CPlusPlus::Document::Ptr document,
                                                       CPlusPlus::Snapshot snapshot)
 {
diff --git a/src/plugins/cpptools/builtineditordocumentprocessor.h b/src/plugins/cpptools/builtineditordocumentprocessor.h
index 800bff085a..01962843f4 100644
--- a/src/plugins/cpptools/builtineditordocumentprocessor.h
+++ b/src/plugins/cpptools/builtineditordocumentprocessor.h
@@ -52,8 +52,8 @@ public:
     bool isParserRunning() const override;
 
     QFuture<CursorInfo> cursorInfo(const CursorInfoParams &params) override;
-    QFuture<SymbolInfo> requestFollowSymbol(int, int) override
-    { return QFuture<SymbolInfo>(); }
+    QFuture<CursorInfo> requestLocalReferences(const QTextCursor &) override;
+    QFuture<SymbolInfo> requestFollowSymbol(int, int) override;
 
 private:
     void onParserFinished(CPlusPlus::Document::Ptr document, CPlusPlus::Snapshot snapshot);
diff --git a/src/plugins/cpptools/cppmodelmanager.cpp b/src/plugins/cpptools/cppmodelmanager.cpp
index 2074899572..c889ac8b9e 100644
--- a/src/plugins/cpptools/cppmodelmanager.cpp
+++ b/src/plugins/cpptools/cppmodelmanager.cpp
@@ -169,9 +169,8 @@ public:
     QTimer m_delayedGcTimer;
 
     // Refactoring
-    CppRefactoringEngine m_builtInRefactoringEngine;
     using REHash = QMap<REType, RefactoringEngineInterface *>;
-    REHash m_refactoringEngines {{REType::BuiltIn, &m_builtInRefactoringEngine}};
+    REHash m_refactoringEngines;
 };
 
 } // namespace Internal
@@ -274,6 +273,7 @@ QString CppModelManager::editorConfigurationFileName()
 static RefactoringEngineInterface *getRefactoringEngine(
         CppModelManagerPrivate::REHash &engines, bool excludeClangCodeModel = true)
 {
+    QTC_ASSERT(!engines.empty(), return nullptr;);
     RefactoringEngineInterface *currentEngine = engines[REType::BuiltIn];
     if (!excludeClangCodeModel && engines.find(REType::ClangCodeModel) != engines.end()) {
         currentEngine = engines[REType::ClangCodeModel];
@@ -291,6 +291,7 @@ void CppModelManager::startLocalRenaming(const CursorInEditor &data,
 {
     RefactoringEngineInterface *engine = getRefactoringEngine(instance()->d->m_refactoringEngines,
                                                               false);
+    QTC_ASSERT(engine, return;);
     engine->startLocalRenaming(data, projectPart, std::move(renameSymbolsCallback));
 }
 
@@ -298,12 +299,15 @@ void CppModelManager::globalRename(const CursorInEditor &data, UsagesCallback &&
                                    const QString &replacement)
 {
     RefactoringEngineInterface *engine = getRefactoringEngine(instance()->d->m_refactoringEngines);
+    QTC_ASSERT(engine, return;);
     engine->globalRename(data, std::move(renameCallback), replacement);
 }
+
 void CppModelManager::findUsages(const CppTools::CursorInEditor &data,
                                  UsagesCallback &&showUsagesCallback) const
 {
     RefactoringEngineInterface *engine = getRefactoringEngine(instance()->d->m_refactoringEngines);
+    QTC_ASSERT(engine, return;);
     engine->findUsages(data, std::move(showUsagesCallback));
 }
 
@@ -367,6 +371,8 @@ void CppModelManager::initializeBuiltinModelManagerSupport()
     d->m_builtinModelManagerSupport
             = ModelManagerSupportProviderInternal().createModelManagerSupport();
     d->m_activeModelManagerSupport = d->m_builtinModelManagerSupport;
+    d->m_refactoringEngines[RefactoringEngineType::BuiltIn] =
+            &d->m_activeModelManagerSupport->refactoringEngineInterface();
 }
 
 CppModelManager::CppModelManager(QObject *parent)
@@ -1267,6 +1273,8 @@ void CppModelManager::activateClangCodeModel(
     QTC_ASSERT(modelManagerSupportProvider, return);
 
     d->m_activeModelManagerSupport = modelManagerSupportProvider->createModelManagerSupport();
+    d->m_refactoringEngines[RefactoringEngineType::ClangCodeModel] =
+            &d->m_activeModelManagerSupport->refactoringEngineInterface();
 }
 
 CppCompletionAssistProvider *CppModelManager::completionAssistProvider() const
diff --git a/src/plugins/cpptools/cppmodelmanagersupport.h b/src/plugins/cpptools/cppmodelmanagersupport.h
index cb74f00efd..b1256aa51f 100644
--- a/src/plugins/cpptools/cppmodelmanagersupport.h
+++ b/src/plugins/cpptools/cppmodelmanagersupport.h
@@ -37,6 +37,7 @@ namespace CppTools {
 class BaseEditorDocumentProcessor;
 class CppCompletionAssistProvider;
 class FollowSymbolInterface;
+class RefactoringEngineInterface;
 
 class CPPTOOLS_EXPORT ModelManagerSupport
 {
@@ -50,6 +51,7 @@ public:
     virtual BaseEditorDocumentProcessor *editorDocumentProcessor(
                 TextEditor::TextDocument *baseTextDocument) = 0;
     virtual FollowSymbolInterface &followSymbolInterface() = 0;
+    virtual RefactoringEngineInterface &refactoringEngineInterface() = 0;
 };
 
 class CPPTOOLS_EXPORT ModelManagerSupportProvider
diff --git a/src/plugins/cpptools/cppmodelmanagersupportinternal.cpp b/src/plugins/cpptools/cppmodelmanagersupportinternal.cpp
index c03e2ed57e..95b98bbdf3 100644
--- a/src/plugins/cpptools/cppmodelmanagersupportinternal.cpp
+++ b/src/plugins/cpptools/cppmodelmanagersupportinternal.cpp
@@ -26,6 +26,7 @@
 #include "cppcompletionassist.h"
 #include "cppmodelmanagersupportinternal.h"
 #include "cppfollowsymbolundercursor.h"
+#include "cpprefactoringengine.h"
 #include "builtineditordocumentprocessor.h"
 
 #include <app/app_version.h>
@@ -53,7 +54,8 @@ ModelManagerSupport::Ptr ModelManagerSupportProviderInternal::createModelManager
 
 ModelManagerSupportInternal::ModelManagerSupportInternal()
     : m_completionAssistProvider(new InternalCompletionAssistProvider),
-      m_followSymbol(new FollowSymbolUnderCursor)
+      m_followSymbol(new FollowSymbolUnderCursor),
+      m_refactoringEngine(new CppRefactoringEngine)
 {
 }
 
@@ -76,3 +78,8 @@ FollowSymbolInterface &ModelManagerSupportInternal::followSymbolInterface()
 {
     return *m_followSymbol;
 }
+
+RefactoringEngineInterface &ModelManagerSupportInternal::refactoringEngineInterface()
+{
+    return *m_refactoringEngine;
+}
diff --git a/src/plugins/cpptools/cppmodelmanagersupportinternal.h b/src/plugins/cpptools/cppmodelmanagersupportinternal.h
index cd35ea5abc..6ac2d4d022 100644
--- a/src/plugins/cpptools/cppmodelmanagersupportinternal.h
+++ b/src/plugins/cpptools/cppmodelmanagersupportinternal.h
@@ -44,10 +44,12 @@ public:
     BaseEditorDocumentProcessor *editorDocumentProcessor(
             TextEditor::TextDocument *baseTextDocument) final;
     FollowSymbolInterface &followSymbolInterface() final;
+    RefactoringEngineInterface &refactoringEngineInterface() final;
 
 private:
     QScopedPointer<CppCompletionAssistProvider> m_completionAssistProvider;
     QScopedPointer<FollowSymbolInterface> m_followSymbol;
+    QScopedPointer<RefactoringEngineInterface> m_refactoringEngine;
 };
 
 class ModelManagerSupportProviderInternal : public ModelManagerSupportProvider
diff --git a/src/tools/clangbackend/source/clangcodemodelserver.cpp b/src/tools/clangbackend/source/clangcodemodelserver.cpp
index 9def46b2db..8b9a03dfe5 100644
--- a/src/tools/clangbackend/source/clangcodemodelserver.cpp
+++ b/src/tools/clangbackend/source/clangcodemodelserver.cpp
@@ -261,6 +261,7 @@ void ClangCodeModelServer::requestReferences(const RequestReferencesMessage &mes
 
         JobRequest jobRequest = processor.createJobRequest(JobRequest::Type::RequestReferences);
         fillJobRequest(jobRequest, message);
+        jobRequest.localReferences = message.local();
         processor.addJob(jobRequest);
         processor.process();
     }  catch (const std::exception &exception) {
diff --git a/src/tools/clangbackend/source/clangjobrequest.h b/src/tools/clangbackend/source/clangjobrequest.h
index 78aaed6618..2df63e126d 100644
--- a/src/tools/clangbackend/source/clangjobrequest.h
+++ b/src/tools/clangbackend/source/clangjobrequest.h
@@ -118,6 +118,7 @@ public:
     qint32 funcNameStartColumn = -1;
     quint64 ticketNumber = 0;
     Utf8StringVector dependentFiles;
+    bool localReferences = false;
 };
 
 using JobRequests = QVector<JobRequest>;
diff --git a/src/tools/clangbackend/source/clangreferencescollector.cpp b/src/tools/clangbackend/source/clangreferencescollector.cpp
index d2b7bf5431..64d9b61392 100644
--- a/src/tools/clangbackend/source/clangreferencescollector.cpp
+++ b/src/tools/clangbackend/source/clangreferencescollector.cpp
@@ -121,7 +121,7 @@ public:
     ReferencesCollector(CXTranslationUnit cxTranslationUnit);
     ~ReferencesCollector();
 
-    ReferencesResult collect(uint line, uint column) const;
+    ReferencesResult collect(uint line, uint column, bool localReferences = false) const;
 
 private:
     bool isWithinTokenRange(CXToken token, uint line, uint column) const;
@@ -207,7 +207,7 @@ bool ReferencesCollector::checkToken(unsigned index, const Utf8String &identifie
     return candidate.usr() == usr;
 }
 
-ReferencesResult ReferencesCollector::collect(uint line, uint column) const
+ReferencesResult ReferencesCollector::collect(uint line, uint column, bool localReferences) const
 {
     ReferencesResult result;
 
@@ -216,11 +216,15 @@ ReferencesResult ReferencesCollector::collect(uint line, uint column) const
         return result;
 
     const Cursor cursorFromUser = m_cxCursors[static_cast<int>(index)];
+
     const ReferencedCursor refCursor = ReferencedCursor::find(cursorFromUser);
     const Utf8String usr = refCursor.usr();
     if (usr.isEmpty())
         return result;
 
+    if (localReferences && !refCursor.isLocalVariable())
+        return result;
+
     const CXToken token = m_cxTokens[index];
     const Utf8String identifier = ClangString(clang_getTokenSpelling(m_cxTranslationUnit, token));
     for (uint i = 0; i < m_cxTokenCount; ++i) {
@@ -239,10 +243,11 @@ ReferencesResult ReferencesCollector::collect(uint line, uint column) const
 
 ReferencesResult collectReferences(CXTranslationUnit cxTranslationUnit,
                                    uint line,
-                                   uint column)
+                                   uint column,
+                                   bool localReferences)
 {
     ReferencesCollector collector(cxTranslationUnit);
-    return collector.collect(line, column);
+    return collector.collect(line, column, localReferences);
 }
 
 } // namespace ClangBackEnd
diff --git a/src/tools/clangbackend/source/clangreferencescollector.h b/src/tools/clangbackend/source/clangreferencescollector.h
index 263ba07fd9..c467f8b090 100644
--- a/src/tools/clangbackend/source/clangreferencescollector.h
+++ b/src/tools/clangbackend/source/clangreferencescollector.h
@@ -54,7 +54,8 @@ public:
 
 ReferencesResult collectReferences(CXTranslationUnit cxTranslationUnit,
                                    uint line,
-                                   uint column);
+                                   uint column,
+                                   bool localReferences = false);
 
 } // namespace ClangBackEnd
 
diff --git a/src/tools/clangbackend/source/clangrequestreferencesjob.cpp b/src/tools/clangbackend/source/clangrequestreferencesjob.cpp
index 39b3319488..cb2354ede3 100644
--- a/src/tools/clangbackend/source/clangrequestreferencesjob.cpp
+++ b/src/tools/clangbackend/source/clangrequestreferencesjob.cpp
@@ -43,9 +43,10 @@ IAsyncJob::AsyncPrepareResult RequestReferencesJob::prepareAsyncRun()
     const TranslationUnit translationUnit = *m_translationUnit;
     const quint32 line = jobRequest.line;
     const quint32 column = jobRequest.column;
-    setRunner([translationUnit, line, column]() {
+    const bool localReferences = jobRequest.localReferences;
+    setRunner([translationUnit, line, column, localReferences]() {
         TIME_SCOPE_DURATION("RequestReferencesJobRunner");
-        return translationUnit.references(line, column);
+        return translationUnit.references(line, column, localReferences);
     });
 
     return AsyncPrepareResult{translationUnit.id()};
diff --git a/src/tools/clangbackend/source/clangtranslationunit.cpp b/src/tools/clangbackend/source/clangtranslationunit.cpp
index 6951551985..7d3bcbbddd 100644
--- a/src/tools/clangbackend/source/clangtranslationunit.cpp
+++ b/src/tools/clangbackend/source/clangtranslationunit.cpp
@@ -139,9 +139,9 @@ void TranslationUnit::extractDocumentAnnotations(
     skippedSourceRanges = this->skippedSourceRanges().toSourceRangeContainers();
 }
 
-ReferencesResult TranslationUnit::references(uint line, uint column) const
+ReferencesResult TranslationUnit::references(uint line, uint column, bool localReferences) const
 {
-    return collectReferences(m_cxTranslationUnit, line, column);
+    return collectReferences(m_cxTranslationUnit, line, column, localReferences);
 }
 
 DiagnosticSet TranslationUnit::diagnostics() const
diff --git a/src/tools/clangbackend/source/clangtranslationunit.h b/src/tools/clangbackend/source/clangtranslationunit.h
index 9634c8cb51..e42d67ea6d 100644
--- a/src/tools/clangbackend/source/clangtranslationunit.h
+++ b/src/tools/clangbackend/source/clangtranslationunit.h
@@ -85,7 +85,7 @@ public:
                                     QVector<SourceRangeContainer> &skippedSourceRanges) const;
 
 
-    ReferencesResult references(uint line, uint column) const;
+    ReferencesResult references(uint line, uint column, bool localReferences = false) const;
     DiagnosticSet diagnostics() const;
 
     SourceLocation sourceLocationAt(uint line, uint column) const;