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thomas-fritsch / psdt

PostScript Development Tools for Eclipse
http://thomas-fritsch.github.io/psdt/
GNU General Public License v3.0
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Debug UI gives sporadic ClassCastException in XbaseBreakpointDetailPaneFactory #1

Closed thomas-fritsch closed 8 years ago

thomas-fritsch commented 8 years ago

Sometimes, when clicking on a PostScript variable in the VariablesView, the following error occurs.

Message: Problems occurred when invoking code from plug-in: "org.eclipse.jface".

Exception Stack Trace:

java.lang.ClassCastException: de.tfritsch.psdt.debug.model.PSVariable cannot be cast to org.eclipse.debug.core.model.IBreakpoint
    at org.eclipse.xtext.xbase.ui.debug.XbaseBreakpointDetailPaneFactory.getDetailPaneTypes(XbaseBreakpointDetailPaneFactory.java:42)
    at org.eclipse.debug.internal.ui.views.variables.details.DetailPaneManager$DetailPaneFactoryExtension.getDetailPaneTypes(DetailPaneManager.java:94)
    at org.eclipse.debug.internal.ui.views.variables.details.DetailPaneManager.getPossiblePaneIDs(DetailPaneManager.java:385)
    at org.eclipse.debug.internal.ui.views.variables.details.DetailPaneManager.getPreferredPaneFromSelection(DetailPaneManager.java:285)
    at org.eclipse.debug.internal.ui.views.variables.details.DetailPaneProxy.display(DetailPaneProxy.java:109)
    at org.eclipse.debug.internal.ui.views.variables.VariablesView.refreshDetailPaneContents(VariablesView.java:1218)
    at org.eclipse.debug.internal.ui.views.variables.VariablesView$8.selectionChanged(VariablesView.java:1157)
    at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:876)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
    at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:178)
    at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:873)
    at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1217)
    at org.eclipse.jface.viewers.StructuredViewer$5.widgetSelected(StructuredViewer.java:1243)
    at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:265)
    at org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:259)
    at org.eclipse.jface.util.OpenStrategy$1$2.run(OpenStrategy.java:440)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:136)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4147)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3764)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
    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:380)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
    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:648)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1438)
thomas-fritsch commented 8 years ago

Not a bug in PSDT, but in Xtext.
See https://bugs.eclipse.org/bugs/show_bug.cgi?id=464013 .
Fixed with Xtext 2.8.2