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Build Identifier: Xtext 2.2.1 - Eclipse Indigo (20110916-0149) We have created following Xtext grammar: http://teamprojekt-msi.googlecode.com/svn/trunk/spray-extensions/shapes/org.eclipselabs.spray.shapes/src/org/eclipselabs/spray/shapes/Shape.xtext. The code highlighting and all editor functionalities are working well in the Eclipse Application Runtime that for the DSL. Just the Code Completion is not working on some context. There we get a exception message: !ENTRY org.eclipse.ui 4 0 2011-12-22 09:47:38.830 !MESSAGE java.lang.reflect.InvocationTargetException !STACK 0 java.lang.RuntimeException: java.lang.reflect.InvocationTargetException at org.eclipse.xtext.ui.editor.contentassist.antlr.AbstractContentAssistParser.getFollowElements(AbstractContentAssistParser.java:237) at org.eclipse.xtext.ui.editor.contentassist.antlr.AbstractContentAssistParser.getFollowElements(AbstractContentAssistParser.java:141) at org.eclipse.xtext.ui.editor.contentassist.antlr.ParserBasedContentAssistContextFactory$StatefulFactory.computeFollowElements(ParserBasedContentAssistContextFactory.java:387) at org.eclipse.xtext.ui.editor.contentassist.antlr.ParserBasedContentAssistContextFactory$StatefulFactory.computeFollowElements(ParserBasedContentAssistContextFactory.java:343) at org.eclipse.xtext.ui.editor.contentassist.antlr.ParserBasedContentAssistContextFactory$StatefulFactory.computeFollowElements(ParserBasedContentAssistContextFactory.java:337) at org.eclipse.xtext.ui.editor.contentassist.antlr.ParserBasedContentAssistContextFactory$StatefulFactory.doCreateContexts(ParserBasedContentAssistContextFactory.java:286) at org.eclipse.xtext.ui.editor.contentassist.antlr.ParserBasedContentAssistContextFactory$StatefulFactory.handleLastCompleteNodeIsAtEndOfDatatypeNode(ParserBasedContentAssistContextFactory.java:212) at org.eclipse.xtext.ui.editor.contentassist.antlr.ParserBasedContentAssistContextFactory$StatefulFactory.doCreateContexts(ParserBasedContentAssistContextFactory.java:161) at org.eclipse.xtext.ui.editor.contentassist.antlr.ParserBasedContentAssistContextFactory$StatefulFactory.create(ParserBasedContentAssistContextFactory.java:148) at org.eclipse.xtext.ui.editor.contentassist.antlr.ParserBasedContentAssistContextFactory.create(ParserBasedContentAssistContextFactory.java:549) at org.eclipse.xtext.ui.editor.contentassist.CompletionProposalComputer.exec(CompletionProposalComputer.java:48) at org.eclipse.xtext.ui.editor.contentassist.CompletionProposalComputer.exec(CompletionProposalComputer.java:1) at org.eclipse.xtext.util.concurrent.AbstractReadWriteAcces.readOnly(AbstractReadWriteAcces.java:32) at org.eclipse.xtext.ui.editor.model.XtextDocument.readOnly(XtextDocument.java:78) at org.eclipse.xtext.ui.editor.contentassist.XtextContentAssistProcessor.computeCompletionProposals(XtextContentAssistProcessor.java:69) at org.eclipse.xtext.ui.editor.contentassist.RepeatedContentAssistProcessor.computeCompletionProposals(RepeatedContentAssistProcessor.java:73) at org.eclipse.jface.text.contentassist.ContentAssistant.computeCompletionProposals(ContentAssistant.java:1830) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.computeProposals(CompletionProposalPopup.java:556) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.access$16(CompletionProposalPopup.java:553) at org.eclipse.jface.text.contentassist.CompletionProposalPopup$2.run(CompletionProposalPopup.java:488) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.showProposals(CompletionProposalPopup.java:482) at org.eclipse.jface.text.contentassist.ContentAssistant.showPossibleCompletions(ContentAssistant.java:1656) at org.eclipse.jface.text.source.SourceViewer.doOperation(SourceViewer.java:930) at org.eclipse.jface.text.source.projection.ProjectionViewer.doOperation(ProjectionViewer.java:1534) at org.eclipse.ui.texteditor.ContentAssistAction$1.run(ContentAssistAction.java:82) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.texteditor.ContentAssistAction.run(ContentAssistAction.java:80) at org.eclipse.jface.action.Action.runWithEvent(Action.java:498) at org.eclipse.ui.commands.ActionHandler.execute(ActionHandler.java:185) at org.eclipse.ui.internal.handlers.LegacyHandlerWrapper.execute(LegacyHandlerWrapper.java:109) at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476) at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508) at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.executeCommand(WorkbenchKeyboard.java:468) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:786) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:885) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:567) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$3(WorkbenchKeyboard.java:508) at org.eclipse.ui.internal.keys.WorkbenchKeyboard$KeyDownFilter.handleEvent(WorkbenchKeyboard.java:123) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1262) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1052) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1077) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1062) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1104) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1100) at org.eclipse.swt.widgets.Widget.wmChar(Widget.java:1509) at org.eclipse.swt.widgets.Control.WM_CHAR(Control.java:4640) at org.eclipse.swt.widgets.Canvas.WM_CHAR(Canvas.java:345) at org.eclipse.swt.widgets.Control.windowProc(Control.java:4528) at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:341) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4972) at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method) at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2531) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3752) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577) at org.eclipse.equinox.launcher.Main.run(Main.java:1410) at org.eclipse.equinox.launcher.Main.main(Main.java:1386) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.xtext.ui.editor.contentassist.antlr.AbstractContentAssistParser.getFollowElements(AbstractContentAssistParser.java:210) ... 76 more Caused by: java.lang.IllegalStateException at org.eclipse.xtext.parser.antlr.UnorderedGroupHelper$State.canLeave(UnorderedGroupHelper.java:228) at org.eclipse.xtext.parser.antlr.UnorderedGroupHelper.canLeave(UnorderedGroupHelper.java:146) at org.eclipse.xtext.ui.editor.contentassist.antlr.AbstractContentAssistParser$2.canLeave(AbstractContentAssistParser.java:132) at org.eclipse.xtext.ui.editor.contentassist.antlr.AbstractContentAssistParser$3.announceEof(AbstractContentAssistParser.java:170) at org.eclipse.xtext.ui.editor.contentassist.antlr.ObservableXtextTokenStream.LA(ObservableXtextTokenStream.java:48) at org.eclipselabs.spray.shapes.ui.contentassist.antlr.internal.InternalShapeParser.synpred184_InternalShape_fragment(InternalShapeParser.java:11335) at org.eclipselabs.spray.shapes.ui.contentassist.antlr.internal.InternalShapeParser.synpred184_InternalShape(InternalShapeParser.java:12880) at org.eclipselabs.spray.shapes.ui.contentassist.antlr.internal.InternalShapeParser$DFA134.specialStateTransition(InternalShapeParser.java:15609) at org.antlr.runtime.DFA.predict(DFA.java:80) at org.eclipse.xtext.ui.editor.contentassist.antlr.internal.DFA.predict(DFA.java:25) at org.eclipselabs.spray.shapes.ui.contentassist.antlr.internal.InternalShapeParser.rule__PolyLineLayout__UnorderedGroup_1__Impl(InternalShapeParser.java:64633) at org.eclipselabs.spray.shapes.ui.contentassist.antlr.internal.InternalShapeParser.rule__PolyLineLayout__UnorderedGroup_1__0(InternalShapeParser.java:64851) at org.eclipselabs.spray.shapes.ui.contentassist.antlr.internal.InternalShapeParser.rule__PolyLineLayout__UnorderedGroup_1(InternalShapeParser.java:64593) ... 81 more Reproducible: Always Steps to Reproduce: 1. Create a new Xtext project (extension shape) 2. Use the grammar (with XBase Inheritance - comment StyleLayout 3. Run the MWE2 generator 4. Run an Eclipse Application for this grammar 5. Create a new Java Project and a new file with the extension "shape" 6. Put following conten in the file: shape BPMN_Gateway_OR { polygon { point(x=0,y=30) point(x=30,y=0) point(x=60,y=25) point(x=30,y=60) // TRY CONTENT ASSIST HERE ellipse { position(x=15,y=15) size(width=30, height=30) } } } 7. Try the content assist on the marked position.
