Action to rename functions in the decompiler context menu (#2286)

src/core/Cutter.cpp

@@ -658,10 +658,10 @@ bool CutterCore::mapFile(QString path, RVA mapaddr)
     return true;
 }
 
-void CutterCore::renameFunction(const QString &oldName, const QString &newName)
+void CutterCore::renameFunction(const RVA offset, const QString &newName)
 {
-    cmdRaw("afn " + newName + " " + oldName);
+    cmdRaw("afn " + newName + " " + RAddressString(offset));
-    emit functionRenamed(oldName, newName);
+    emit functionRenamed(offset, newName);
 }
 
 void CutterCore::delFunction(RVA addr)
@@ -3640,9 +3640,9 @@ void CutterCore::triggerVarsChanged()
     emit varsChanged();
 }
 
-void CutterCore::triggerFunctionRenamed(const QString &prevName, const QString &newName)
+void CutterCore::triggerFunctionRenamed(const RVA offset, const QString &newName)
 {
-    emit functionRenamed(prevName, newName);
+    emit functionRenamed(offset, newName);
 }
 
 void CutterCore::loadPDB(const QString &file)

src/core/Cutter.h

@@ -143,7 +143,7 @@ public:
     QStringList autocomplete(const QString &cmd, RLinePromptType promptType, size_t limit = 4096);
 
     /* Functions methods */
-    void renameFunction(const QString &oldName, const QString &newName);
+    void renameFunction(const RVA offset, const QString &newName);
     void delFunction(RVA addr);
     void renameFlag(QString old_name, QString new_name);
 
@@ -587,7 +587,7 @@ public:
 
     /* Signals related */
     void triggerVarsChanged();
-    void triggerFunctionRenamed(const QString &prevName, const QString &newName);
+    void triggerFunctionRenamed(const RVA offset, const QString &newName);
     void triggerRefreshAll();
     void triggerAsmOptionsChanged();
     void triggerGraphOptionsChanged();
@@ -636,7 +636,7 @@ public:
 signals:
     void refreshAll();
 
-    void functionRenamed(const QString &prev_name, const QString &new_name);
+    void functionRenamed(const RVA offset, const QString &new_name);
     void varsChanged();
     void functionsChanged();
     void flagsChanged();

src/menus/DecompilerContextMenu.cpp

@@ -10,15 +10,18 @@
 #include <QClipboard>
 #include <QApplication>
 #include <QPushButton>
+#include <QInputDialog>
 
 DecompilerContextMenu::DecompilerContextMenu(QWidget *parent, MainWindow *mainWindow)
     :   QMenu(parent),
         offset(0),
         isTogglingBreakpoints(false),
         mainWindow(mainWindow),
+        annotationHere(nullptr),
         actionCopy(tr("Copy"), this),
         actionAddComment(tr("Add Comment"), this),
         actionDeleteComment(tr("Delete comment"), this),
+        actionRenameThingHere(tr("Rename function at cursor"), this),
         actionToggleBreakpoint(tr("Add/remove breakpoint"), this),
         actionAdvancedBreakpoint(tr("Advanced breakpoint"), this),
         breakpointsInLineMenu(new QMenu(this)),
@@ -31,6 +34,8 @@ DecompilerContextMenu::DecompilerContextMenu(QWidget *parent, MainWindow *mainWi
     setActionAddComment();
     setActionDeleteComment();
 
+    setActionRenameThingHere();
+
     addSeparator();
     addBreakpointMenu();
     addDebugMenu();
@@ -47,6 +52,11 @@ DecompilerContextMenu::~DecompilerContextMenu()
 {
 }
 
+void DecompilerContextMenu::setAnnotationHere(RCodeAnnotation *annotation)
+{
+    this->annotationHere = annotation;
+}
+
 void DecompilerContextMenu::setOffset(RVA offset)
 {
     this->offset = offset;
@@ -152,6 +162,14 @@ void DecompilerContextMenu::aboutToShowSlot()
 
     QString progCounterName = Core()->getRegisterName("PC").toUpper();
     actionSetPC.setText(tr("Set %1 here").arg(progCounterName));
+
+    if (!annotationHere) { // To be considered as invalid
+        actionRenameThingHere.setVisible(false);
+    } else {
+        actionRenameThingHere.setVisible(true);
+        actionRenameThingHere.setText(tr("Rename function %1").arg(QString(
+                                                                       annotationHere->function_name.name)));
+    }
 }
 
 // Set up actions
@@ -178,6 +196,14 @@ void DecompilerContextMenu::setActionDeleteComment()
     addAction(&actionDeleteComment);
 }
 
+void DecompilerContextMenu::setActionRenameThingHere()
+{
+    actionRenameThingHere.setShortcut({Qt::SHIFT + Qt::Key_N});
+    connect(&actionRenameThingHere, &QAction::triggered, this,
+            &DecompilerContextMenu::actionRenameThingHereTriggered);
+    addAction(&actionRenameThingHere);
+}
+
 void DecompilerContextMenu::setActionToggleBreakpoint()
 {
     connect(&actionToggleBreakpoint, &QAction::triggered, this,
@@ -220,6 +246,34 @@ void DecompilerContextMenu::actionDeleteCommentTriggered()
     Core()->delComment(this->firstOffsetInLine);
 }
 
+void DecompilerContextMenu::actionRenameThingHereTriggered()
+{
+    if (!annotationHere) {
+        return;
+    }
+    bool ok;
+    auto type = annotationHere->type;
+    if (type == R_CODE_ANNOTATION_TYPE_FUNCTION_NAME) {
+        QString currentName(annotationHere->function_name.name);
+        RVA func_addr = annotationHere->function_name.offset;
+        RAnalFunction *func = Core()->functionAt(func_addr);
+        if (func == NULL) {
+            QString function_name = QInputDialog::getText(this, tr("Define this function at %2").arg(RAddressString(func_addr)),
+                                            tr("Function name:"), QLineEdit::Normal, currentName, &ok);
+            if (ok && !function_name.isEmpty()) {
+                Core()->createFunctionAt(func_addr, function_name);
+            }
+        } else {
+            QString newName = QInputDialog::getText(this, tr("Rename function %2").arg(currentName),
+                                                tr("Function name:"), QLineEdit::Normal, currentName, &ok);
+            if (ok && !newName.isEmpty()) {
+               Core()->renameFunction(func_addr, newName);
+            }    
+        }
+        
+    }
+}
+
 void DecompilerContextMenu::actionToggleBreakpointTriggered()
 {
     if (!this->availableBreakpoints.isEmpty()) {

src/menus/DecompilerContextMenu.h

@@ -5,6 +5,8 @@
 #include <QMenu>
 #include <QKeySequence>
 
+#include <r_util/r_annotated_code.h>
+
 class DecompilerContextMenu : public QMenu
 {
     Q_OBJECT
@@ -14,6 +16,7 @@ public:
     ~DecompilerContextMenu();
 
     bool getIsTogglingBreakpoints();
+    void setAnnotationHere(RCodeAnnotation *annotation);
 
 signals:
     void copy();
@@ -34,6 +37,8 @@ private slots:
     void actionAddCommentTriggered();
     void actionDeleteCommentTriggered();
 
+    void actionRenameThingHereTriggered();
+
     void actionToggleBreakpointTriggered();
     void actionAdvancedBreakpointTriggered();
 
@@ -48,12 +53,16 @@ private:
     QVector<RVA> availableBreakpoints;
     MainWindow *mainWindow;
 
+    RCodeAnnotation *annotationHere;
+
     QAction actionCopy;
     QAction *copySeparator;
 
     QAction actionAddComment;
     QAction actionDeleteComment;
 
+    QAction actionRenameThingHere;
+
     QMenu *breakpointMenu;
     QAction actionToggleBreakpoint;
     QAction actionAdvancedBreakpoint;
@@ -75,6 +84,8 @@ private:
     void setActionAddComment();
     void setActionDeleteComment();
 
+    void setActionRenameThingHere();
+
     void setActionToggleBreakpoint();
     void setActionAdvancedBreakpoint();
 

src/menus/DisassemblyContextMenu.cpp

@@ -818,7 +818,7 @@ void DisassemblyContextMenu::on_actionRename_triggered()
         QString newName = QInputDialog::getText(this, tr("Rename function %2").arg(fcn->name),
                                             tr("Function name:"), QLineEdit::Normal, fcn->name, &ok);
         if (ok && !newName.isEmpty()) {
-            Core()->renameFunction(fcn->name, newName);
+            Core()->renameFunction(fcn->addr, newName);
         }
     } else if (f) {
         // Renaming flag
@@ -863,13 +863,12 @@ void DisassemblyContextMenu::on_actionRenameUsedHere_triggered()
     // If user accepted
     if (ok && !newName.isEmpty()) {
         Core()->cmdRawAt(QString("an %1").arg(newName), offset);
-
         if (type == ThingUsedHere::Type::Address || type == ThingUsedHere::Type::Flag) {
             Core()->triggerFlagsChanged();
         } else if (type == ThingUsedHere::Type::Var) {
             Core()->triggerVarsChanged();
         } else if (type == ThingUsedHere::Type::Function) {
-            Core()->triggerFunctionRenamed(oldName, newName);
+            Core()->triggerFunctionRenamed(thingUsedHere.offset, newName);
         }
     }
 }
@@ -1041,7 +1040,7 @@ void DisassemblyContextMenu::on_actionEditFunction_triggered()
 
         if (dialog.exec()) {
             QString new_name = dialog.getNameText();
-            Core()->renameFunction(fcn->name, new_name);
+            Core()->renameFunction(fcn->addr, new_name);
             QString new_start_addr = dialog.getStartAddrText();
             fcn->addr = Core()->math(new_start_addr);
             QString new_stack_size = dialog.getStackSizeText();

src/widgets/DecompilerWidget.cpp

@@ -284,7 +284,8 @@ void DecompilerWidget::decompilationFinished(RAnnotatedCode *codeDecompiled)
     ui->progressLabel->setVisible(false);
     ui->decompilerComboBox->setEnabled(decompilerSelectionEnabled);
     updateRefreshButton();
-
+    
+    mCtxMenu->setAnnotationHere(nullptr);
     this->code.reset(codeDecompiled);
     QString codeString = QString::fromUtf8(this->code->code);
     if (codeString.isEmpty()) {
@@ -305,6 +306,23 @@ void DecompilerWidget::decompilationFinished(RAnnotatedCode *codeDecompiled)
     }
 }
 
+void DecompilerWidget::setAnnotationsAtCursor(size_t pos)
+{
+    RCodeAnnotation *annotationAtPos = nullptr;
+    void *annotationi;
+    r_vector_foreach(&this->code->annotations, annotationi) {
+        RCodeAnnotation *annotation = (RCodeAnnotation *)annotationi;
+        if (annotation->type == R_CODE_ANNOTATION_TYPE_OFFSET ||
+                annotation->type == R_CODE_ANNOTATION_TYPE_SYNTAX_HIGHLIGHT ||
+                annotation->start > pos || annotation->end <= pos) {
+            continue;
+        }
+        annotationAtPos = annotation;
+        break;
+    }
+    mCtxMenu->setAnnotationHere(annotationAtPos);
+}
+
 void DecompilerWidget::decompilerSelected()
 {
     Config()->setSelectedDecompiler(ui->decompilerComboBox->currentData().toString());
@@ -333,7 +351,7 @@ void DecompilerWidget::cursorPositionChanged()
     }
 
     size_t pos = ui->textEdit->textCursor().position();
-
+    setAnnotationsAtCursor(pos);
 
     setInfoForBreakpoints();
 

src/widgets/DecompilerWidget.h

@@ -113,6 +113,8 @@ private:
     void gatherBreakpointInfo(RAnnotatedCode &codeDecompiled, size_t startPos, size_t endPos);
 
     void setInfoForBreakpoints();
+
+    void setAnnotationsAtCursor(size_t pos);
 };
 
 #endif // DECOMPILERWIDGET_H

src/widgets/DisassemblerGraphView.cpp

@@ -43,8 +43,7 @@ DisassemblerGraphView::DisassemblerGraphView(QWidget *parent, CutterSeekable *se
     // Signals that require a refresh all
     connect(Core(), SIGNAL(refreshAll()), this, SLOT(refreshView()));
     connect(Core(), SIGNAL(commentsChanged()), this, SLOT(refreshView()));
-    connect(Core(), SIGNAL(functionRenamed(const QString &, const QString &)), this,
+    connect(Core(), &CutterCore::functionRenamed, this, &DisassemblerGraphView::refreshView);
-            SLOT(refreshView()));
     connect(Core(), SIGNAL(flagsChanged()), this, SLOT(refreshView()));
     connect(Core(), SIGNAL(varsChanged()), this, SLOT(refreshView()));
     connect(Core(), SIGNAL(instructionChanged(RVA)), this, SLOT(refreshView()));

src/widgets/DisassemblyWidget.cpp

@@ -148,8 +148,7 @@ DisassemblyWidget::DisassemblyWidget(MainWindow *main)
     connect(Core(), SIGNAL(commentsChanged()), this, SLOT(refreshDisasm()));
     connect(Core(), SIGNAL(flagsChanged()), this, SLOT(refreshDisasm()));
     connect(Core(), SIGNAL(functionsChanged()), this, SLOT(refreshDisasm()));
-    connect(Core(), SIGNAL(functionRenamed(const QString &, const QString &)), this,
+    connect(Core(), &CutterCore::functionRenamed, this, [this]() {refreshDisasm();});
-            SLOT(refreshDisasm()));
     connect(Core(), SIGNAL(varsChanged()), this, SLOT(refreshDisasm()));
     connect(Core(), SIGNAL(asmOptionsChanged()), this, SLOT(refreshDisasm()));
     connect(Core(), &CutterCore::instructionChanged, this, [this](RVA offset) {

src/widgets/FunctionsWidget.cpp

@@ -334,11 +334,11 @@ bool FunctionModel::updateCurrentIndex()
     return changed;
 }
 
-void FunctionModel::functionRenamed(const QString &prev_name, const QString &new_name)
+void FunctionModel::functionRenamed(const RVA offset, const QString &new_name)
 {
     for (int i = 0; i < functions->count(); i++) {
         FunctionDescription &function = (*functions)[i];
-        if (function.name == prev_name) {
+        if (function.offset == offset) {
             function.name = new_name;
             emit dataChanged(index(i, 0), index(i, columnCount() - 1));
         }
@@ -533,7 +533,7 @@ void FunctionsWidget::onActionFunctionsRenameTriggered()
     // If user accepted
     if (ok && !newName.isEmpty()) {
         // Rename function in r2 core
-        Core()->renameFunction(function.name, newName);
+        Core()->renameFunction(function.offset, newName);
 
         // Seek to new renamed function
         Core()->seekAndShow(function.offset);

src/widgets/FunctionsWidget.h

@@ -69,7 +69,7 @@ public:
     QString name(const QModelIndex &index) const override;
 private slots:
     void seekChanged(RVA addr);
-    void functionRenamed(const QString &prev_name, const QString &new_name);
+    void functionRenamed(const RVA offset, const QString &new_name);
 };