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What steps will reproduce the problem? 1. open javascript file 2. 3. -- Error Details -- Date: Fri Jul 07 13:10:59 CEST 2017 Message: class org.eclipse.wst.jsdt.core.dom.EmptyStatement is not assignable to class org.eclipse.wst.jsdt.core.dom.SingleVariableDeclaration Severity: Error Product: Eclipse Platform 4.7.0.v20170612-0950 (org.eclipse.platform.ide) Plugin: org.eclipse.wst.jsdt.core Session Data: eclipse.buildId=4.7.0.I20170612-0950 java.version=1.8.0_131 java.vendor=Oracle Corporation BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=de_DE Command-line arguments: -os win32 -ws win32 -arch x86_64 -data file:/C:/Java/eclipse-workspace/ Exception Stack Trace: java.lang.ClassCastException: class org.eclipse.wst.jsdt.core.dom.EmptyStatement is not assignable to class org.eclipse.wst.jsdt.core.dom.SingleVariableDeclaration at org.eclipse.wst.jsdt.core.dom.ASTNode.checkNewChild(ASTNode.java:1830) at org.eclipse.wst.jsdt.core.dom.ASTNode$NodeList.add(ASTNode.java:1216) at org.eclipse.wst.jsdt.core.dom.ASTNode$NodeList.add(ASTNode.java:1) at java.util.AbstractList.add(AbstractList.java:108) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.processFunction(ClosureCompilerASTConverter.java:819) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.process(ClosureCompilerASTConverter.java:229) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.transform(ClosureCompilerASTConverter.java:128) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.processClassDeclaration(ClosureCompilerASTConverter.java:566) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.process(ClosureCompilerASTConverter.java:302) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.transform(ClosureCompilerASTConverter.java:128) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.transformAndSetProperty(ClosureCompilerASTConverter.java:1680) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.processExportDecl(ClosureCompilerASTConverter.java:684) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.process(ClosureCompilerASTConverter.java:311) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.transform(ClosureCompilerASTConverter.java:128) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.processAstRoot(ClosureCompilerASTConverter.java:487) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.process(ClosureCompilerASTConverter.java:263) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.transform(ClosureCompilerASTConverter.java:128) at org.eclipse.wst.jsdt.internal.compiler.closure.ClosureCompiler.parse(ClosureCompiler.java:120) at org.eclipse.wst.jsdt.core.dom.ASTParser.createAST(ASTParser.java:652) at org.eclipse.wst.jsdt.internal.core.CompilationUnit.buildStructure(CompilationUnit.java:171) at org.eclipse.wst.jsdt.internal.core.Openable.generateInfos(Openable.java:243) at org.eclipse.wst.jsdt.internal.core.JavaElement.openWhenClosed(JavaElement.java:538) at org.eclipse.wst.jsdt.internal.core.JavaElement.getElementInfo(JavaElement.java:282) at org.eclipse.wst.jsdt.internal.core.JavaElement.getElementInfo(JavaElement.java:268) at org.eclipse.wst.jsdt.internal.core.JavaElement.getChildren(JavaElement.java:216) at org.eclipse.wst.jsdt.internal.core.JavaElement.getChildrenOfType(JavaElement.java:230) at org.eclipse.wst.jsdt.internal.core.CompilationUnit.getTypes(CompilationUnit.java:926) at org.eclipse.wst.jsdt.internal.core.NameLookup.<init>(NameLookup.java:219) at org.eclipse.wst.jsdt.internal.core.JavaProjectElementInfo.newNameLookup(JavaProjectElementInfo.java:342) at org.eclipse.wst.jsdt.internal.core.JavaProject.newNameLookup(JavaProject.java:2391) at org.eclipse.wst.jsdt.internal.core.SearchableEnvironment.<init>(SearchableEnvironment.java:79) at org.eclipse.wst.jsdt.internal.core.SearchableEnvironment.<init>(SearchableEnvironment.java:89) at org.eclipse.wst.jsdt.internal.core.SearchableEnvironment.<init>(SearchableEnvironment.java:98) at org.eclipse.wst.jsdt.internal.core.JavaProject.newSearchableNameEnvironment(JavaProject.java:2416) at org.eclipse.wst.jsdt.internal.core.JavaElement.newSearchableNameEnvironment(JavaElement.java:872) at org.eclipse.wst.jsdt.internal.core.JavaElement.newSearchableNameEnvironment(JavaElement.java:872) at org.eclipse.wst.jsdt.internal.core.JavaElement.newSearchableNameEnvironment(JavaElement.java:872) at org.eclipse.wst.jsdt.internal.core.CompilationUnit.newSearchableNameEnvironment(CompilationUnit.java:1481) at org.eclipse.wst.jsdt.internal.core.Openable.codeSelect(Openable.java:151) at org.eclipse.wst.jsdt.internal.core.CompilationUnit.codeSelect(CompilationUnit.java:240) at org.eclipse.wst.jsdt.internal.core.CompilationUnit.codeSelect(CompilationUnit.java:234) at org.eclipse.wst.jsdt.internal.ui.actions.SelectionConverter.codeResolve(SelectionConverter.java:213) at org.eclipse.wst.jsdt.internal.ui.actions.SelectionConverter$1CodeResolveRunnable.run(SelectionConverter.java:197) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119)
Which file you're opening would matter significantly in this case.
I cannot attach an example file, it was a js file from an AngularJS1 project if that helps.
Created attachment 271708 [details] The Problem File - schemaBuilder.js
I have the same problem, but only with one specific .JS file. Other .JS files in the same folder are fine, there is no problem with them. I have attached the problem file. The original, unmodified file for reference is available at https://github.com/Vincit/objection-graphql/blob/master/lib/SchemaBuilder.js What steps will reproduce the problem: The problem seemed to start when trying to save the file I was editing. I got a msg saying that the file save was unsuccessful (Null Pointer Error). Note that although I got the 'File Save Unsuccessful' error, the file (with my edits) was saved sucessfully, I verified this in a text editor. I then closed the file and tried to reopen it, and this is when I get the "class org.eclipse.wst.jsdt.core.dom.EmptyStatement is not assignable to class org.eclipse.wst.jsdt.core.dom.SingleVariableDeclaration" error, with the editor pane message saying "Failed to create the part's controls". I tried switching to 'Open With' with both the 'Text Editor' and 'Generic Text Editor'. Still unable to open the file. I got the problem to go away momentarily by uninstalling and reinstalling the DarkestDark Theme, and was then able to load the file. But the moment I tried to save it again, the 'File Save Unsuccessful' error was back. I then closed the file and was unable to open it again. I then deleted the .JS file, and fetched a fresh copy from GitHub. Still unable to load the file. I then downloaded and installed a fresh copy of Eclipse Oxygen (for Javascript devs). Still unable to load the file. Please help! -- Error Details -- The 'details' dropdown on the now blank editor page conatins this: java.lang.NullPointerException at org.eclipse.wst.jsdt.internal.core.CompilationUnit.buildStructure(CompilationUnit.java:172) at org.eclipse.wst.jsdt.internal.core.Openable.generateInfos(Openable.java:243) at org.eclipse.wst.jsdt.internal.core.JavaElement.openWhenClosed(JavaElement.java:538) at org.eclipse.wst.jsdt.internal.core.JavaElement.getElementInfo(JavaElement.java:282) at org.eclipse.wst.jsdt.internal.core.JavaElement.getElementInfo(JavaElement.java:268) at org.eclipse.wst.jsdt.internal.core.CompilationUnit.getSourceRange(CompilationUnit.java:912) at org.eclipse.wst.jsdt.internal.ui.javaeditor.selectionactions.GoToNextPreviousMemberAction.update(GoToNextPreviousMemberAction.java:83) at org.eclipse.wst.jsdt.internal.ui.javaeditor.selectionactions.GoToNextPreviousMemberAction.<init>(GoToNextPreviousMemberAction.java:62) at org.eclipse.wst.jsdt.internal.ui.javaeditor.selectionactions.GoToNextPreviousMemberAction.newGoToNextMemberAction(GoToNextPreviousMemberAction.java:49) at org.eclipse.wst.jsdt.internal.ui.javaeditor.JavaEditor.createActions(JavaEditor.java:2317) at org.eclipse.wst.jsdt.internal.ui.javaeditor.CompilationUnitEditor.createActions(CompilationUnitEditor.java:1029) at org.eclipse.ui.texteditor.AbstractTextEditor.createPartControl(AbstractTextEditor.java:3463) at org.eclipse.ui.texteditor.StatusTextEditor.createPartControl(StatusTextEditor.java:61) at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.createPartControl(AbstractDecoratedTextEditor.java:445) at org.eclipse.wst.jsdt.internal.ui.javaeditor.JavaEditor.createPartControl(JavaEditor.java:2626) at org.eclipse.wst.jsdt.internal.ui.javaeditor.CompilationUnitEditor.createPartControl(CompilationUnitEditor.java:1412) at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:151) at org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor.createPartControl(CompatibilityEditor.java:99) at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:355) 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:498) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55) at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:990) at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:955) at org.eclipse.e4.core.internal.di.InjectorImpl.inject(InjectorImpl.java:124) at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:399) at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:318) at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:162) at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:105) at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:74) at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:56) at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:129) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:992) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:661) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:767) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$0(PartRenderingEngine.java:738) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:732) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:716) at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.showTab(StackRenderer.java:1293) at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer.lambda$0(LazyStackRenderer.java:68) at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:40) at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:233) at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:144) at org.eclipse.swt.widgets.Display.syncExec(Display.java:4889) at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:212) at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:36) at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:201) at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197) at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230) at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148) at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:135) at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78) at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39) at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:52) at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:60) at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374) at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java:173) at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.showElementInWindow(ModelServiceImpl.java:620) at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:584) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.delegateBringToTop(PartServiceImpl.java:769) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.bringToTop(PartServiceImpl.java:401) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:1188) at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:3261) at org.eclipse.ui.internal.WorkbenchPage.access$25(WorkbenchPage.java:3176) at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:3158) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3153) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3117) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3107) at org.eclipse.ui.ide.IDE.openEditor(IDE.java:563) at org.eclipse.ui.ide.IDE.openEditor(IDE.java:518) at org.eclipse.ui.actions.OpenFileAction.openFile(OpenFileAction.java:100) at org.eclipse.ui.actions.OpenSystemEditorAction.run(OpenSystemEditorAction.java:97) at org.eclipse.ui.actions.RetargetAction.run(RetargetAction.java:216) at org.eclipse.ui.navigator.CommonNavigatorManager$2.open(CommonNavigatorManager.java:191) at org.eclipse.ui.OpenAndLinkWithEditorHelper$InternalListener.open(OpenAndLinkWithEditorHelper.java:46) at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:851) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.JFaceUtil.lambda$0(JFaceUtil.java:44) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173) at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:848) at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1163) at org.eclipse.ui.navigator.CommonViewer.handleOpen(CommonViewer.java:451) at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:273) at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:268) at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:308) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4428) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4238) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3817) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1150) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1039) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151) 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:498) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590) at org.eclipse.equinox.launcher.Main.run(Main.java:1499)
After some additional tinkering, starting with a fresh, virgin file, it now works fine??? My edits are back in, and the file is now saving, closing and opening fine. I have no idea what caused it, except possibly for a hidden bad character in the file?
