Name Refactoring on ParsersRule throws NPE

[fspiekermann]

To reproduce the error:
-Open a Xtext Grammar
-Select ParserRule
-Choose Rename Element from Context menu

java.lang.reflect.InvocationTargetException at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:398) at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:481) at org.eclipse.ui.internal.progress.ProgressMonitorJobsDialog.run(ProgressMonitorJobsDialog.java:242) at org.eclipse.ui.internal.progress.ProgressManager$3.run(ProgressManager.java:895) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.progress.ProgressManager.busyCursorWhile(ProgressManager.java:930) at org.eclipse.ui.internal.progress.ProgressManager.busyCursorWhile(ProgressManager.java:905) at org.eclipse.ui.internal.progress.ProgressManager.run(ProgressManager.java:1078) at org.eclipse.xtext.ui.refactoring.ui.SyncUtil.totalSync(SyncUtil.java:59) at org.eclipse.xtext.ui.refactoring.ui.SyncUtil.totalSync(SyncUtil.java:52) at org.eclipse.xtext.ui.refactoring.ui.DefaultRenameElementHandler.execute(DefaultRenameElementHandler.java:70) at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:295) at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90) at sun.reflect.GeneratedMethodAccessor169.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:54) at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:282) at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:264) at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132) at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:152) at org.eclipse.core.commands.Command.executeWithChecks(Command.java:494) at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:488) at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210) at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.executeItem(HandledContributionItem.java:433) at org.eclipse.e4.ui.workbench.renderers.swt.AbstractContributionItem.handleWidgetSelection(AbstractContributionItem.java:454) at org.eclipse.e4.ui.workbench.renderers.swt.AbstractContributionItem$3.handleEvent(AbstractContributionItem.java:482) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4248) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1501) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1524) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1509) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1313) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4072) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3698) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:687) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:604) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610) at org.eclipse.equinox.launcher.Main.run(Main.java:1519) Caused by: java.lang.NullPointerException at org.eclipse.xtext.ui.refactoring.ui.SyncUtil.waitForReconciler(SyncUtil.java:135) at org.eclipse.xtext.ui.refactoring.ui.SyncUtil.reconcileAllEditors(SyncUtil.java:102) at org.eclipse.xtext.ui.refactoring.ui.SyncUtil.doReconcileAndBuild(SyncUtil.java:75) at org.eclipse.xtext.ui.refactoring.ui.SyncUtil.access$0(SyncUtil.java:71) at org.eclipse.xtext.ui.refactoring.ui.SyncUtil$1.run(SyncUtil.java:62) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119) Root exception: java.lang.NullPointerException at org.eclipse.xtext.ui.refactoring.ui.SyncUtil.waitForReconciler(SyncUtil.java:135) at org.eclipse.xtext.ui.refactoring.ui.SyncUtil.reconcileAllEditors(SyncUtil.java:102) at org.eclipse.xtext.ui.refactoring.ui.SyncUtil.doReconcileAndBuild(SyncUtil.java:75) at org.eclipse.xtext.ui.refactoring.ui.SyncUtil.access$0(SyncUtil.java:71) at org.eclipse.xtext.ui.refactoring.ui.SyncUtil$1.run(SyncUtil.java:62) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119)

[kthoms]

Could not reproduce the issue. Rename refactoring dialog pops up.

[fspiekermann]

After a Restart of eclipse everything works fine for me too. But after a time i get the same Problem again and then it es in every Project, even in new ones. But for now i don´t get action that made this Problem start. If I find the way of getting this Problem, I will reopen the Issue.