| strange behavior of XImportSection [message #1053342] |
Sat, 04 May 2013 02:55  |
Eclipse User |
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Hi
I'm using the new XImportSection in my DSL like this
TJProgram:
('package' name=QualifiedName ';')?
importSection=XImportSection?
elements+=TJDeclaration*
;
now when using content assist for completing Java type references, this
works most of the time (and the import statement is automatically added).
However, especially when there is currently no import in the program,
the completion does not work and I see this exception
org.eclipse.xtext.ui.editor.contentassist.ConfigurableCompletionProposal
- Error applying completion proposal
java.lang.ClassCastException:
org.eclipse.xtext.nodemodel.impl.HiddenLeafNode cannot be cast to
org.eclipse.xtext.nodemodel.ICompositeNode
at
org.eclipse.xtext.xbase.imports.DefaultImportsConfiguration.findPreviousNode(DefaultImportsConfiguration.java:151)
at
org.eclipse.xtext.xbase.imports.DefaultImportsConfiguration.getImportSectionOffset(DefaultImportsConfiguration.java:127)
at
org.eclipse.xtext.xbase.imports.ImportSectionRegionUtil.computeRegion(ImportSectionRegionUtil.java:41)
at
org.eclipse.xtext.xbase.imports.RewritableImportSection.addSectionToAppend(RewritableImportSection.java:284)
at
org.eclipse.xtext.xbase.imports.RewritableImportSection.rewrite(RewritableImportSection.java:264)
at
org.eclipse.xtext.xbase.ui.contentassist.ImportingTypesProposalProvider$FQNImporter.apply(ImportingTypesProposalProvider.java:167)
at
org.eclipse.xtext.ui.editor.contentassist.ConfigurableCompletionProposal.apply(ConfigurableCompletionProposal.java:143)
at
org.eclipse.xtext.ui.editor.contentassist.ConfigurableCompletionProposal.apply(ConfigurableCompletionProposal.java:335)
at
org.eclipse.jface.text.contentassist.CompletionProposalPopup.insertProposal(CompletionProposalPopup.java:940)
at
org.eclipse.jface.text.contentassist.CompletionProposalPopup.insertSelectedProposalWithMask(CompletionProposalPopup.java:891)
at
org.eclipse.jface.text.contentassist.CompletionProposalPopup.verifyKey(CompletionProposalPopup.java:1323)
at
org.eclipse.jface.text.contentassist.ContentAssistant$InternalListener.verifyKey(ContentAssistant.java:808)
at
org.eclipse.jface.text.TextViewer$VerifyKeyListenersManager.verifyKey(TextViewer.java:491)
at
org.eclipse.swt.custom.StyledTextListener.handleEvent(StyledTextListener.java:65)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1392)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1416)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1401)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1187)
at org.eclipse.swt.custom.StyledText.handleKeyDown(StyledText.java:5940)
at org.eclipse.swt.custom.StyledText$7.handleEvent(StyledText.java:5636)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1392)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1416)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1401)
at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1428)
at org.eclipse.swt.widgets.Widget.gtk_key_press_event(Widget.java:829)
at org.eclipse.swt.widgets.Control.gtk_key_press_event(Control.java:3186)
at
org.eclipse.swt.widgets.Composite.gtk_key_press_event(Composite.java:758)
at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:2092)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:5344)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:4544)
at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method)
at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:8654)
at org.eclipse.swt.widgets.Display.eventProc(Display.java:1243)
at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method)
at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS.java:2283)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3336)
at
org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1108)
at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at
org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:992)
at
org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:137)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:600)
at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:555)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
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:354)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
at org.eclipse.equinox.launcher.Main.main(Main.java:1426)
--
Lorenzo Bettini, PhD in Computer Science, DI, Univ. Torino
HOME: http://www.lorenzobettini.it
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