CppEditor: add default RefactoringEngine

..and use it when we don't have refactoring plug-in

Change-Id: Ibe317a9728d439b9c5e05271d92a330d22eaacb9
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>

12 files changed, 224 insertions, 81 deletions

diff --git a/src/plugins/clangrefactoring/refactoringengine.cpp b/src/plugins/clangrefactoring/refactoringengine.cpp
index e0d61ae908..aba069d93e 100644
--- a/src/plugins/clangrefactoring/refactoringengine.cpp
+++ b/src/plugins/clangrefactoring/refactoringengine.cpp
@@ -34,6 +34,8 @@
 #include <cpptools/clangcompileroptionsbuilder.h>
 #include <cpptools/cpptoolsreuse.h>
 
+#include <texteditor/textdocument.h>
+
 #include <QTextCursor>
 #include <QTextDocument>
 
@@ -50,9 +52,7 @@ RefactoringEngine::RefactoringEngine(ClangBackEnd::RefactoringServerInterface &s
 {
 }
 
-void RefactoringEngine::startLocalRenaming(const QTextCursor &textCursor,
-                                           const Utils::FileName &filePath,
-                                           int revision,
+void RefactoringEngine::startLocalRenaming(const CppTools::CursorInEditor &data,
                                            CppTools::ProjectPart *projectPart,
                                            RenameCallback &&renameSymbolsCallback)
 {
@@ -62,21 +62,23 @@ void RefactoringEngine::startLocalRenaming(const QTextCursor &textCursor,
 
     client.setLocalRenamingCallback(std::move(renameSymbolsCallback));
 
+    QString filePath = data.filePath().toString();
+    QTextCursor textCursor = data.cursor();
     Utils::SmallStringVector commandLine{ClangCompilerOptionsBuilder::build(
                     projectPart,
-                    fileKindInProjectPart(projectPart, filePath.toString()),
+                    fileKindInProjectPart(projectPart, filePath),
                     CppTools::getPchUsage(),
                     CLANG_VERSION,
                     CLANG_RESOURCE_DIR)};
 
-    commandLine.push_back(filePath.toString());
+    commandLine.push_back(filePath);
 
-    RequestSourceLocationsForRenamingMessage message(ClangBackEnd::FilePath(filePath.toString()),
+    RequestSourceLocationsForRenamingMessage message(ClangBackEnd::FilePath(filePath),
                                                      uint(textCursor.blockNumber() + 1),
                                                      uint(textCursor.positionInBlock() + 1),
                                                      textCursor.document()->toPlainText(),
                                                      std::move(commandLine),
-                                                     revision);
+                                                     textCursor.document()->revision());
 
 
     server.requestSourceLocationsForRenamingMessage(std::move(message));
diff --git a/src/plugins/clangrefactoring/refactoringengine.h b/src/plugins/clangrefactoring/refactoringengine.h
index 453c52775c..a5fe5fc641 100644
--- a/src/plugins/clangrefactoring/refactoringengine.h
+++ b/src/plugins/clangrefactoring/refactoringengine.h
@@ -39,9 +39,7 @@ class RefactoringEngine : public CppTools::RefactoringEngineInterface
 public:
     RefactoringEngine(ClangBackEnd::RefactoringServerInterface &server,
                       ClangBackEnd::RefactoringClientInterface &client);
-    void startLocalRenaming(const QTextCursor &textCursor,
-                            const Utils::FileName &filePath,
-                            int revision,
+    void startLocalRenaming(const CppTools::CursorInEditor &data,
                             CppTools::ProjectPart *projectPart,
                             RenameCallback &&renameSymbolsCallback) override;
 
diff --git a/src/plugins/cppeditor/cppeditor.pro b/src/plugins/cppeditor/cppeditor.pro
index 2bac48cff2..2b68cf7421 100644
--- a/src/plugins/cppeditor/cppeditor.pro
+++ b/src/plugins/cppeditor/cppeditor.pro
@@ -27,6 +27,7 @@ HEADERS += \
     cppquickfix.h \
     cppquickfixassistant.h \
     cppquickfixes.h \
+    cpprefactoringengine.h \
     cpptypehierarchy.h \
     cppuseselectionsupdater.h \
     cppvirtualfunctionassistprovider.h \
@@ -56,6 +57,7 @@ SOURCES += \
     cppquickfix.cpp \
     cppquickfixassistant.cpp \
     cppquickfixes.cpp \
+    cpprefactoringengine.cpp \
     cpptypehierarchy.cpp \
     cppuseselectionsupdater.cpp \
     cppvirtualfunctionassistprovider.cpp \
diff --git a/src/plugins/cppeditor/cppeditor.qbs b/src/plugins/cppeditor/cppeditor.qbs
index 1e87ebdfb4..a5c017665a 100644
--- a/src/plugins/cppeditor/cppeditor.qbs
+++ b/src/plugins/cppeditor/cppeditor.qbs
@@ -70,6 +70,8 @@ QtcPlugin {
         "cppquickfixassistant.h",
         "cppquickfixes.cpp",
         "cppquickfixes.h",
+        "cpprefactoringengine.cpp",
+        "cpprefactoringengine.h",
         "cpptypehierarchy.cpp",
         "cpptypehierarchy.h",
         "cppuseselectionsupdater.cpp",
diff --git a/src/plugins/cppeditor/cppeditorwidget.cpp b/src/plugins/cppeditor/cppeditorwidget.cpp
index f48648a44e..2fad8ecd60 100644
--- a/src/plugins/cppeditor/cppeditorwidget.cpp
+++ b/src/plugins/cppeditor/cppeditorwidget.cpp
@@ -37,6 +37,7 @@
 #include "cppminimizableinfobars.h"
 #include "cpppreprocessordialog.h"
 #include "cppquickfixassistant.h"
+#include "cpprefactoringengine.h"
 #include "cppuseselectionsupdater.h"
 
 #include <clangsupport/sourcelocationscontainer.h>
@@ -116,33 +117,30 @@ public:
     CppEditorOutline *m_cppEditorOutline;
 
     QTimer m_updateFunctionDeclDefLinkTimer;
-
-    CppLocalRenaming m_localRenaming;
-
     SemanticInfo m_lastSemanticInfo;
 
-    CppUseSelectionsUpdater m_useSelectionsUpdater;
-
     FunctionDeclDefLinkFinder *m_declDefLinkFinder;
     QSharedPointer<FunctionDeclDefLink> m_declDefLink;
 
-    QScopedPointer<FollowSymbolUnderCursor> m_followSymbolUnderCursor;
-
     QAction *m_parseContextAction = nullptr;
     ParseContextWidget *m_parseContextWidget = nullptr;
     QToolButton *m_preprocessorButton = nullptr;
     MinimizableInfoBars::Actions m_showInfoBarActions;
 
+    CppLocalRenaming m_localRenaming;
+    CppUseSelectionsUpdater m_useSelectionsUpdater;
+    QScopedPointer<FollowSymbolUnderCursor> m_followSymbolUnderCursor;
     CppSelectionChanger m_cppSelectionChanger;
+    CppRefactoringEngine m_builtinRefactoringEngine;
 };
 
 CppEditorWidgetPrivate::CppEditorWidgetPrivate(CppEditorWidget *q)
     : m_modelManager(CppModelManager::instance())
     , m_cppEditorDocument(qobject_cast<CppEditorDocument *>(q->textDocument()))
     , m_cppEditorOutline(new CppEditorOutline(q))
+    , m_declDefLinkFinder(new FunctionDeclDefLinkFinder(q))
     , m_localRenaming(q)
     , m_useSelectionsUpdater(q)
-    , m_declDefLinkFinder(new FunctionDeclDefLinkFinder(q))
     , m_followSymbolUnderCursor(new FollowSymbolUnderCursor(q))
     , m_cppSelectionChanger()
 {}
@@ -434,23 +432,6 @@ bool CppEditorWidget::isWidgetHighlighted(QWidget *widget)
     return widget ? widget->property("highlightWidget").toBool() : false;
 }
 
-void CppEditorWidget::renameSymbolUnderCursor()
-{
-    if (refactoringEngine())
-        renameSymbolUnderCursorClang();
-    else
-        renameSymbolUnderCursorBuiltin();
-}
-
-void CppEditorWidget::renameSymbolUnderCursorBuiltin()
-{
-    updateSemanticInfo(d->m_cppEditorDocument->recalculateSemanticInfo(),
-                       /*updateUseSelectionSynchronously=*/true);
-
-    if (!d->m_localRenaming.start()) // Rename local symbol
-        renameUsages();              // Rename non-local symbol or macro
-}
-
 namespace {
 
 QList<ProjectPart::Ptr> fetchProjectParts(CppTools::CppModelManager *modelManager,
@@ -538,44 +519,45 @@ QList<QTextEdit::ExtraSelection> sourceLocationsToExtraSelections(
 
 }
 
-void CppEditorWidget::renameSymbolUnderCursorClang()
+void CppEditorWidget::renameSymbolUnderCursor()
 {
     using ClangBackEnd::SourceLocationsContainer;
 
-    ProjectPart *theProjectPart = projectPart();
-    if (refactoringEngine()->isUsable() && theProjectPart) {
-        d->m_useSelectionsUpdater.abortSchedule();
-
-        QPointer<CppEditorWidget> cppEditorWidget = this;
-
-        auto renameSymbols = [=](const QString &symbolName,
-                                 const SourceLocationsContainer &sourceLocations,
-                                 int revision) {
-            if (cppEditorWidget) {
-                viewport()->setCursor(Qt::IBeamCursor);
-
-                if (revision == document()->revision()) {
-                    auto selections
-                        = sourceLocationsToExtraSelections(sourceLocations.sourceLocationContainers(),
-                                                           symbolName.size(),
-                                                           cppEditorWidget);
-                    setExtraSelections(TextEditor::TextEditorWidget::CodeSemanticsSelection,
-                                       selections);
-                    d->m_localRenaming.updateSelectionsForVariableUnderCursor(selections);
-                    if (!d->m_localRenaming.start())
-                        renameUsages();
-                }
-            }
-        };
+    ProjectPart *projPart = projectPart();
+    if (!refactoringEngine()->isUsable() || !projPart)
+        return;
 
-        refactoringEngine()->startLocalRenaming(textCursor(),
-                                                textDocument()->filePath(),
-                                                document()->revision(),
-                                                theProjectPart,
-                                                std::move(renameSymbols));
+    d->m_useSelectionsUpdater.abortSchedule();
+
+    QPointer<CppEditorWidget> cppEditorWidget = this;
+
+    auto renameSymbols = [=](const QString &symbolName,
+                             const SourceLocationsContainer &sourceLocations,
+                             int revision) {
+        if (cppEditorWidget) {
+            viewport()->setCursor(Qt::IBeamCursor);
+
+            if (revision != document()->revision())
+                return;
+            if (sourceLocations.hasContent()) {
+                QList<QTextEdit::ExtraSelection> selections
+                    = sourceLocationsToExtraSelections(sourceLocations.sourceLocationContainers(),
+                                                       static_cast<uint>(symbolName.size()),
+                                                       cppEditorWidget);
+                setExtraSelections(TextEditor::TextEditorWidget::CodeSemanticsSelection, selections);
+                d->m_localRenaming.updateSelectionsForVariableUnderCursor(selections);
+            }
+            if (!d->m_localRenaming.start()) // Rename local symbol
+                renameUsages();              // Rename non-local symbol or macro
+        }
+    };
 
-        viewport()->setCursor(Qt::BusyCursor);
-    }
+    viewport()->setCursor(Qt::BusyCursor);
+    refactoringEngine()->startLocalRenaming(CppTools::CursorInEditor{textCursor(),
+                                                                     textDocument()->filePath(),
+                                                                     this},
+                                            projPart,
+                                            std::move(renameSymbols));
 }
 
 void CppEditorWidget::updatePreprocessorButtonTooltip()
@@ -700,7 +682,9 @@ RefactorMarkers CppEditorWidget::refactorMarkersWithoutClangMarkers() const
 
 RefactoringEngineInterface *CppEditorWidget::refactoringEngine() const
 {
-    return CppTools::CppModelManager::refactoringEngine();
+    RefactoringEngineInterface *engine = CppTools::CppModelManager::refactoringEngine();
+    return engine ? engine
+                  : static_cast<RefactoringEngineInterface *>(&d->m_builtinRefactoringEngine);
 }
 
 bool CppEditorWidget::isSemanticInfoValidExceptLocalUses() const
@@ -845,6 +829,12 @@ void CppEditorWidget::slotCodeStyleSettingsChanged(const QVariant &)
     formatter.invalidateCache(document());
 }
 
+void CppEditorWidget::updateSemanticInfo()
+{
+    updateSemanticInfo(d->m_cppEditorDocument->recalculateSemanticInfo(),
+                       /*updateUseSelectionSynchronously=*/ true);
+}
+
 void CppEditorWidget::updateSemanticInfo(const SemanticInfo &semanticInfo,
                                          bool updateUseSelectionSynchronously)
 {
diff --git a/src/plugins/cppeditor/cppeditorwidget.h b/src/plugins/cppeditor/cppeditorwidget.h
index 8e5be90dde..87819b76ee 100644
--- a/src/plugins/cppeditor/cppeditorwidget.h
+++ b/src/plugins/cppeditor/cppeditorwidget.h
@@ -88,6 +88,7 @@ public:
     static void updateWidgetHighlighting(QWidget *widget, bool highlight);
     static bool isWidgetHighlighted(QWidget *widget);
 
+    void updateSemanticInfo();
 protected:
     bool event(QEvent *e) override;
     void contextMenuEvent(QContextMenuEvent *) override;
@@ -132,9 +133,6 @@ private:
 
     CppTools::RefactoringEngineInterface *refactoringEngine() const;
 
-    void renameSymbolUnderCursorClang();
-    void renameSymbolUnderCursorBuiltin();
-
     CppTools::ProjectPart *projectPart() const;
 
 private:
diff --git a/src/plugins/cppeditor/cpprefactoringengine.cpp b/src/plugins/cppeditor/cpprefactoringengine.cpp
new file mode 100644
index 0000000000..06ad6bd2c1
--- /dev/null
+++ b/src/plugins/cppeditor/cpprefactoringengine.cpp
@@ -0,0 +1,50 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 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 "cpprefactoringengine.h"
+#include "cppeditorwidget.h"
+
+#include "utils/qtcassert.h"
+
+namespace CppEditor {
+namespace Internal {
+
+void CppRefactoringEngine::startLocalRenaming(const CppTools::CursorInEditor &data,
+                                              CppTools::ProjectPart *,
+                                              RenameCallback &&renameSymbolsCallback)
+{
+    CppEditorWidget *editorWidget = static_cast<CppEditorWidget *>(data.editorWidget());
+    QTC_ASSERT(editorWidget, renameSymbolsCallback(QString(),
+                                                   ClangBackEnd::SourceLocationsContainer(),
+                                                   0); return;);
+    editorWidget->updateSemanticInfo();
+    // Call empty callback
+    renameSymbolsCallback(QString(),
+                          ClangBackEnd::SourceLocationsContainer(),
+                          editorWidget->document()->revision());
+}
+
+} // namespace Internal
+} // namespace CppEditor
diff --git a/src/plugins/cppeditor/cpprefactoringengine.h b/src/plugins/cppeditor/cpprefactoringengine.h
new file mode 100644
index 0000000000..380c537b3d
--- /dev/null
+++ b/src/plugins/cppeditor/cpprefactoringengine.h
@@ -0,0 +1,46 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 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 CppEditor {
+namespace Internal {
+
+class CppEditorWidget;
+
+class CppRefactoringEngine : public CppTools::RefactoringEngineInterface
+{
+public:
+    void startLocalRenaming(const CppTools::CursorInEditor &data,
+                            CppTools::ProjectPart *projectPart,
+                            RenameCallback &&renameSymbolsCallback) override;
+
+    bool isUsable() const override { return true; }
+};
+
+} // namespace Internal
+} // namespace CppEditor
diff --git a/src/plugins/cpptools/cpptools.pro b/src/plugins/cpptools/cpptools.pro
index e007c813f3..3a0e1f2bcd 100644
--- a/src/plugins/cpptools/cpptools.pro
+++ b/src/plugins/cpptools/cpptools.pro
@@ -87,7 +87,8 @@ HEADERS += \
     cppprojectfilecategorizer.h \
     clangcompileroptionsbuilder.h \
     cppprojectpartchooser.h \
-    cppsymbolinfo.h
+    cppsymbolinfo.h \
+    cursorineditor.h
 
 SOURCES += \
     abstracteditorsupport.cpp \
diff --git a/src/plugins/cpptools/cpptools.qbs b/src/plugins/cpptools/cpptools.qbs
index 2fcda3ae10..640e91d6df 100644
--- a/src/plugins/cpptools/cpptools.qbs
+++ b/src/plugins/cpptools/cpptools.qbs
@@ -159,6 +159,7 @@ Project {
             "cpptoolssettings.h",
             "cppworkingcopy.cpp",
             "cppworkingcopy.h",
+            "cursorineditor.h",
             "doxygengenerator.cpp",
             "doxygengenerator.h",
             "editordocumenthandle.cpp",
diff --git a/src/plugins/cpptools/cursorineditor.h b/src/plugins/cpptools/cursorineditor.h
new file mode 100644
index 0000000000..c93f9e8338
--- /dev/null
+++ b/src/plugins/cpptools/cursorineditor.h
@@ -0,0 +1,55 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 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 <QTextCursor>
+#include <utils/fileutils.h>
+
+namespace TextEditor {
+class TextEditorWidget;
+} // namespace TextEditor
+
+namespace CppTools {
+
+class CursorInEditor
+{
+public:
+    CursorInEditor(const QTextCursor &cursor, const Utils::FileName &filePath,
+                 TextEditor::TextEditorWidget *editorWidget = nullptr)
+        : m_cursor(cursor)
+        , m_filePath(filePath)
+        , m_editorWidget(editorWidget)
+    {}
+    TextEditor::TextEditorWidget *editorWidget() const { return m_editorWidget; }
+    const QTextCursor &cursor() const { return m_cursor; }
+    const Utils::FileName &filePath() const { return m_filePath; }
+private:
+    QTextCursor m_cursor;
+    Utils::FileName m_filePath;
+    TextEditor::TextEditorWidget *m_editorWidget = nullptr;
+};
+
+} // namespace CppTools
diff --git a/src/plugins/cpptools/refactoringengineinterface.h b/src/plugins/cpptools/refactoringengineinterface.h
index 4afecb7a24..1452c8e576 100644
--- a/src/plugins/cpptools/refactoringengineinterface.h
+++ b/src/plugins/cpptools/refactoringengineinterface.h
@@ -25,18 +25,18 @@
 
 #pragma once
 
+#include "cursorineditor.h"
 #include <utils/fileutils.h>
 
 #include <clangsupport/sourcelocationscontainer.h>
 #include <clangsupport/refactoringclientinterface.h>
 
-QT_BEGIN_NAMESPACE
-class QTextCursor;
-QT_END_NAMESPACE
+namespace TextEditor {
+class TextEditorWidget;
+} // namespace TextEditor
 
 namespace CppTools {
 
-class CppEditorWidget;
 class ProjectPart;
 
 enum class CallType
@@ -45,19 +45,17 @@ enum class CallType
     Asynchronous
 };
 
+// NOTE: This interface is not supposed to be owned as an interface pointer
 class RefactoringEngineInterface
 {
 public:
     using RenameCallback = ClangBackEnd::RefactoringClientInterface::RenameCallback;
 
-    virtual void startLocalRenaming(const QTextCursor &textCursor,
-                                    const Utils::FileName &filePath,
-                                    int revision,
+    virtual void startLocalRenaming(const CursorInEditor &data,
                                     CppTools::ProjectPart *projectPart,
                                     RenameCallback &&renameSymbolsCallback) = 0;
 
     virtual bool isUsable() const = 0;
-
 };
 
 } // namespace CppTools