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Bug 352706

Summary:	[xtend] Compilation of Xtend file aborted due to internal error
Product:	[Modeling] TMF	Reporter:	Karsten Thoms <karsten.thoms>
Component:	Xtext	Assignee:	Project Inbox <tmf.xtext-inbox>
Status:	CLOSED DUPLICATE	QA Contact:
Severity:	major
Priority:	P3	CC:	sebastian.zarnekow
Version:	2.0.0	Flags:	sebastian.zarnekow: indigo+
Target Milestone:	SR1
Hardware:	PC
OS:	Linux
Whiteboard:

Description Karsten Thoms

2011-07-21 04:08:07 EDT

We experience the situation that we have a Xtend class that does not get compiled to Java. The class does not show any validation errors. All other Xtend classes in the project are compiled.

We get the following stack trace, which seems to occur in this situation.

===============================================
ENTRY org.eclipse.jdt.core 4 4 2011-07-21 09:57:26.762
!MESSAGE Could not retrieve superclass
!STACK 0
org.eclipse.jdt.internal.compiler.problem.AbortCompilation: Pb(324) The type org.eclipse.xtext.ui.generator.templates.CodetemplatesGeneratorFragment cannot be resolved. It is indirectly referenced from required .class files
	at org.eclipse.jdt.internal.compiler.problem.ProblemHandler.handle(ProblemHandler.java:121)
	at org.eclipse.jdt.internal.compiler.problem.ProblemHandler.handle(ProblemHandler.java:179)
	at org.eclipse.jdt.internal.compiler.problem.ProblemReporter.handle(ProblemReporter.java:2008)
	at org.eclipse.jdt.internal.compiler.problem.ProblemReporter.isClassPathCorrect(ProblemReporter.java:3945)
	at org.eclipse.jdt.internal.compiler.lookup.UnresolvedReferenceBinding.resolve(UnresolvedReferenceBinding.java:54)
	at org.eclipse.jdt.internal.compiler.lookup.BinaryTypeBinding.resolveType(BinaryTypeBinding.java:122)
	at org.eclipse.jdt.internal.compiler.lookup.BinaryTypeBinding.superclass(BinaryTypeBinding.java:1140)
	at org.eclipse.jdt.core.dom.TypeBinding.getSuperclass(TypeBinding.java:807)
	at org.eclipse.xtext.common.types.access.jdt.JdtBasedTypeFactory.setSuperTypes(JdtBasedTypeFactory.java:312)
	at org.eclipse.xtext.common.types.access.jdt.JdtBasedTypeFactory.createType(JdtBasedTypeFactory.java:116)
	at org.eclipse.xtext.common.types.access.jdt.JdtBasedTypeFactory.createType(JdtBasedTypeFactory.java:90)
	at org.eclipse.xtext.common.types.access.jdt.JdtBasedTypeFactory.createType(JdtBasedTypeFactory.java:1)
	at org.eclipse.xtext.common.types.access.jdt.JdtTypeMirror.initialize(JdtTypeMirror.java:36)
	at org.eclipse.xtext.common.types.access.TypeResource.doLoad(TypeResource.java:86)
	at org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1494)
	at org.eclipse.xtext.common.types.access.TypeResource.load(TypeResource.java:74)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoad(ResourceSetImpl.java:255)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(ResourceSetImpl.java:270)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:397)
	at org.eclipse.xtext.common.types.access.jdt.JdtTypeProvider.findTypeByName(JdtTypeProvider.java:84)
	at org.eclipse.xtext.common.types.xtext.AbstractTypeScope.getSingleElement(AbstractTypeScope.java:55)
	at org.eclipse.xtext.common.types.xtext.AbstractTypeScope.getElements(AbstractTypeScope.java:71)
	at org.eclipse.xtext.linking.impl.ImportedNamesAdapter$WrappingScope$1.iterator(ImportedNamesAdapter.java:64)
	at org.eclipse.xtext.scoping.impl.AbstractScope$ParentIterable.iterator(AbstractScope.java:60)
	at com.google.common.collect.Iterables$3.apply(Iterables.java:422)
	at com.google.common.collect.Iterables$3.apply(Iterables.java:420)
	at com.google.common.collect.Iterators$8.next(Iterators.java:697)
	at com.google.common.collect.Iterators$5.hasNext(Iterators.java:505)
	at com.google.common.collect.Iterators$7.computeNext(Iterators.java:601)
	at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:135)
	at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:130)
	at com.google.common.collect.Iterators$5.hasNext(Iterators.java:504)
	at org.eclipse.xtext.scoping.impl.ImportScope.getLocalElementsByName(ImportScope.java:154)
	at org.eclipse.xtext.scoping.impl.ImportScope.getSingleLocalElementByName(ImportScope.java:140)
	at org.eclipse.xtext.scoping.impl.AbstractScope.getSingleElement(AbstractScope.java:101)
	at org.eclipse.xtext.scoping.impl.AbstractScope.getSingleElement(AbstractScope.java:104)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:121)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:169)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReference(LazyLinkingResource.java:138)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReferences(LazyLinkingResource.java:102)
	at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:417)
	at org.eclipse.xtext.builder.clustering.ClusteringBuilderState.doUpdate(ClusteringBuilderState.java:163)
	at org.eclipse.xtext.builder.builderState.AbstractBuilderState.update(AbstractBuilderState.java:107)
	at org.eclipse.xtext.builder.impl.XtextBuilder.doBuild(XtextBuilder.java:158)
	at org.eclipse.xtext.builder.impl.XtextBuilder.fullBuild(XtextBuilder.java:182)
	at org.eclipse.xtext.builder.impl.XtextBuilder.build(XtextBuilder.java:85)
	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:321)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:396)
	at org.eclipse.core.internal.resources.Project$1.run(Project.java:618)
	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344)
	at org.eclipse.core.internal.resources.Project.internalBuild(Project.java:597)
	at org.eclipse.core.internal.resources.Project.build(Project.java:124)
	at org.eclipse.xtext.builder.impl.BuildScheduler$BuildJob.run(BuildScheduler.java:101)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

!ENTRY org.eclipse.jdt.core 4 4 2011-07-21 09:57:26.834
!MESSAGE Could not retrieve superclass
!STACK 0
org.eclipse.jdt.internal.compiler.problem.AbortCompilation: Pb(324) The type org.eclipse.xtext.ui.generator.templates.CodetemplatesGeneratorFragment cannot be resolved. It is indirectly referenced from required .class files
	at org.eclipse.jdt.internal.compiler.problem.ProblemHandler.handle(ProblemHandler.java:121)
	at org.eclipse.jdt.internal.compiler.problem.ProblemHandler.handle(ProblemHandler.java:179)
	at org.eclipse.jdt.internal.compiler.problem.ProblemReporter.handle(ProblemReporter.java:2008)
	at org.eclipse.jdt.internal.compiler.problem.ProblemReporter.isClassPathCorrect(ProblemReporter.java:3945)
	at org.eclipse.jdt.internal.compiler.lookup.UnresolvedReferenceBinding.resolve(UnresolvedReferenceBinding.java:54)
	at org.eclipse.jdt.internal.compiler.lookup.BinaryTypeBinding.resolveType(BinaryTypeBinding.java:122)
	at org.eclipse.jdt.internal.compiler.lookup.BinaryTypeBinding.superclass(BinaryTypeBinding.java:1140)
	at org.eclipse.jdt.core.dom.TypeBinding.getSuperclass(TypeBinding.java:807)
	at org.eclipse.xtext.common.types.access.jdt.JdtBasedTypeFactory.setSuperTypes(JdtBasedTypeFactory.java:313)
	at org.eclipse.xtext.common.types.access.jdt.JdtBasedTypeFactory.createType(JdtBasedTypeFactory.java:116)
	at org.eclipse.xtext.common.types.access.jdt.JdtBasedTypeFactory.createType(JdtBasedTypeFactory.java:90)
	at org.eclipse.xtext.common.types.access.jdt.JdtBasedTypeFactory.createType(JdtBasedTypeFactory.java:1)
	at org.eclipse.xtext.common.types.access.jdt.JdtTypeMirror.initialize(JdtTypeMirror.java:36)
	at org.eclipse.xtext.common.types.access.TypeResource.doLoad(TypeResource.java:86)
	at org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1494)
	at org.eclipse.xtext.common.types.access.TypeResource.load(TypeResource.java:74)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoad(ResourceSetImpl.java:255)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(ResourceSetImpl.java:270)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:397)
	at org.eclipse.xtext.common.types.access.jdt.JdtTypeProvider.findTypeByName(JdtTypeProvider.java:84)
	at org.eclipse.xtext.common.types.xtext.AbstractTypeScope.getSingleElement(AbstractTypeScope.java:55)
	at org.eclipse.xtext.common.types.xtext.AbstractTypeScope.getElements(AbstractTypeScope.java:71)
	at org.eclipse.xtext.linking.impl.ImportedNamesAdapter$WrappingScope$1.iterator(ImportedNamesAdapter.java:64)
	at org.eclipse.xtext.scoping.impl.AbstractScope$ParentIterable.iterator(AbstractScope.java:60)
	at com.google.common.collect.Iterables$3.apply(Iterables.java:422)
	at com.google.common.collect.Iterables$3.apply(Iterables.java:420)
	at com.google.common.collect.Iterators$8.next(Iterators.java:697)
	at com.google.common.collect.Iterators$5.hasNext(Iterators.java:505)
	at com.google.common.collect.Iterators$7.computeNext(Iterators.java:601)
	at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:135)
	at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:130)
	at com.google.common.collect.Iterators$5.hasNext(Iterators.java:504)
	at org.eclipse.xtext.scoping.impl.ImportScope.getLocalElementsByName(ImportScope.java:154)
	at org.eclipse.xtext.scoping.impl.ImportScope.getSingleLocalElementByName(ImportScope.java:140)
	at org.eclipse.xtext.scoping.impl.AbstractScope.getSingleElement(AbstractScope.java:101)
	at org.eclipse.xtext.scoping.impl.AbstractScope.getSingleElement(AbstractScope.java:104)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:121)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:169)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReference(LazyLinkingResource.java:138)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReferences(LazyLinkingResource.java:102)
	at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:417)
	at org.eclipse.xtext.builder.clustering.ClusteringBuilderState.doUpdate(ClusteringBuilderState.java:163)
	at org.eclipse.xtext.builder.builderState.AbstractBuilderState.update(AbstractBuilderState.java:107)
	at org.eclipse.xtext.builder.impl.XtextBuilder.doBuild(XtextBuilder.java:158)
	at org.eclipse.xtext.builder.impl.XtextBuilder.fullBuild(XtextBuilder.java:182)
	at org.eclipse.xtext.builder.impl.XtextBuilder.build(XtextBuilder.java:85)
	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:321)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:396)
	at org.eclipse.core.internal.resources.Project$1.run(Project.java:618)
	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344)
	at org.eclipse.core.internal.resources.Project.internalBuild(Project.java:597)
	at org.eclipse.core.internal.resources.Project.build(Project.java:124)
	at org.eclipse.xtext.builder.impl.BuildScheduler$BuildJob.run(BuildScheduler.java:101)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Comment 1 Sebastian Zarnekow

2011-07-21 04:17:01 EDT

Hi Karsten,

the exception is only logged and the method #getSupertype handles this case gracefully. Could you please provide some more information on the Xtend-file in question?

Comment 2 Karsten Thoms

2011-07-21 04:27:01 EDT

It was an error in our Xtend class, where we have a recursive call

	def getDefaultValue(SuperType elem) {
		switch (elem) {
			SubType: elem.defaultValue
			default : "" 
		}
	}

When removing this function the class is compiled. But we do not get an error marker here. In this situation the code would cause a StackOverflow if it would be invoked.

Comment 3 Sebastian Zarnekow

2011-07-21 04:30:47 EDT

Looks like a duplicate of bug 342173.

Please reopen if the file does not compile even if you specify the return type of the recursive function.

*** This bug has been marked as a duplicate of bug 342173 ***