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Eclipse Xtext™ is a language development framework
http://www.eclipse.org/Xtext
Eclipse Public License 2.0
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Inferring extension field type leads to exception #2367

Open OLibutzki opened 7 years ago

OLibutzki commented 7 years ago

I have to admit that this error occurs in old Xtext 2.8.4: In the JvmModelInferrer I try to infer a field with an inferred type:

    def private inferField(Element element, JvmGenericType declaringType) {
        val expression = element.expression
        declaringType.members += element.toField(element.name, inferredType)  [
            visibility = JvmVisibility.PRIVATE
            annotations += annotationRef(Extension)
            initializer = expression
        ]
    }

This works if I remove the line annotations += annotationRef(Extension). But whenever I want the field to be annotated with org.eclipse.xtext.xbase.lib.Extension the following exception is thrown:

java.lang.UnsupportedOperationException: TODO: import a functional handle on the type resolution that delegates to the best available (current, but evolving) result
    at org.eclipse.xtext.xbase.typesystem.internal.DefaultReentrantTypeResolver.reentrantResolve(DefaultReentrantTypeResolver.java:134)
    at org.eclipse.xtext.xbase.typesystem.internal.CachingBatchTypeResolver$LazyResolvedTypes.resolveTypes(CachingBatchTypeResolver.java:80)
    at org.eclipse.xtext.xbase.typesystem.internal.CachingBatchTypeResolver$2.process(CachingBatchTypeResolver.java:57)
    at org.eclipse.xtext.xbase.typesystem.internal.CachingBatchTypeResolver$2.process(CachingBatchTypeResolver.java:1)
    at org.eclipse.xtext.util.concurrent.IUnitOfWork$Void.exec(IUnitOfWork.java:37)
    at org.eclipse.xtext.util.OnChangeEvictingCache.execWithoutCacheClear(OnChangeEvictingCache.java:129)
    at org.eclipse.xtext.xbase.typesystem.internal.CachingBatchTypeResolver.doResolveTypes(CachingBatchTypeResolver.java:53)
    at org.eclipse.xtext.xbase.typesystem.internal.AbstractBatchTypeResolver.resolveTypes(AbstractBatchTypeResolver.java:69)
    at org.eclipse.xtext.xbase.typesystem.internal.AbstractBatchTypeResolver.resolveTypes(AbstractBatchTypeResolver.java:55)
    at org.eclipse.xtext.xbase.typesystem.InferredTypeIndicator.getTypeReference(InferredTypeIndicator.java:71)
    at org.eclipse.xtext.xtype.impl.XComputedTypeReferenceImplCustom.getEquivalent(XComputedTypeReferenceImplCustom.java:46)
    at org.eclipse.xtext.xbase.typesystem.references.LightweightTypeReferenceFactory.doVisitComputedTypeReference(LightweightTypeReferenceFactory.java:165)
    at org.eclipse.xtext.xbase.typesystem.references.LightweightTypeReferenceFactory.doVisitComputedTypeReference(LightweightTypeReferenceFactory.java:1)
    at org.eclipse.xtext.xtype.impl.XComputedTypeReferenceImplCustom.accept(XComputedTypeReferenceImplCustom.java:27)
    at org.eclipse.xtext.common.types.util.AbstractTypeReferenceVisitor.visit(AbstractTypeReferenceVisitor.java:34)
    at org.eclipse.xtext.xbase.typesystem.references.LightweightTypeReferenceFactory.toLightweightReference(LightweightTypeReferenceFactory.java:83)
    at org.eclipse.xtext.xbase.typesystem.references.StandardTypeReferenceOwner.toLightweightTypeReference(StandardTypeReferenceOwner.java:118)
    at org.eclipse.xtext.xbase.typesystem.internal.ResolvedTypes.doGetDeclaredType(ResolvedTypes.java:982)
    at org.eclipse.xtext.xbase.typesystem.internal.ResolvedTypes.doGetActualType(ResolvedTypes.java:952)
    at org.eclipse.xtext.xbase.typesystem.internal.ResolvedTypes.getActualType(ResolvedTypes.java:941)
    at org.eclipse.xtext.xbase.typesystem.internal.LogicalContainerAwareReentrantTypeResolver.addExtensionFieldsToMemberSession(LogicalContainerAwareReentrantTypeResolver.java:974)
    at org.eclipse.xtext.xbase.typesystem.internal.LogicalContainerAwareReentrantTypeResolver.addExtensionsToMemberSession(LogicalContainerAwareReentrantTypeResolver.java:948)
    at org.eclipse.xtext.xbase.typesystem.internal.LogicalContainerAwareReentrantTypeResolver.prepareMembers(LogicalContainerAwareReentrantTypeResolver.java:468)
    at org.eclipse.xtext.xbase.typesystem.internal.LogicalContainerAwareReentrantTypeResolver._doPrepare(LogicalContainerAwareReentrantTypeResolver.java:464)
    at org.eclipse.xtext.xbase.typesystem.internal.LogicalContainerAwareReentrantTypeResolver.doPrepare(LogicalContainerAwareReentrantTypeResolver.java:452)
    at org.eclipse.xtext.xbase.typesystem.internal.LogicalContainerAwareReentrantTypeResolver.prepare(LogicalContainerAwareReentrantTypeResolver.java:402)
    at org.eclipse.xtext.xbase.typesystem.internal.LogicalContainerAwareReentrantTypeResolver.computeTypes(LogicalContainerAwareReentrantTypeResolver.java:689)
    at org.eclipse.xtext.xbase.typesystem.internal.DefaultReentrantTypeResolver.resolve(DefaultReentrantTypeResolver.java:165)
    at org.eclipse.xtext.xbase.typesystem.internal.DefaultReentrantTypeResolver.reentrantResolve(DefaultReentrantTypeResolver.java:140)
    at org.eclipse.xtext.xbase.typesystem.internal.CachingBatchTypeResolver$LazyResolvedTypes.resolveTypes(CachingBatchTypeResolver.java:80)
    at org.eclipse.xtext.xbase.typesystem.internal.CachingBatchTypeResolver$2.process(CachingBatchTypeResolver.java:57)
    at org.eclipse.xtext.xbase.typesystem.internal.CachingBatchTypeResolver$2.process(CachingBatchTypeResolver.java:1)
    at org.eclipse.xtext.util.concurrent.IUnitOfWork$Void.exec(IUnitOfWork.java:37)
    at org.eclipse.xtext.util.OnChangeEvictingCache.execWithoutCacheClear(OnChangeEvictingCache.java:129)
    at org.eclipse.xtext.xbase.typesystem.internal.CachingBatchTypeResolver.doResolveTypes(CachingBatchTypeResolver.java:53)
    at org.eclipse.xtext.xbase.typesystem.internal.AbstractBatchTypeResolver.resolveTypes(AbstractBatchTypeResolver.java:69)
    at org.eclipse.xtext.xbase.resource.BatchLinkingService.resolveBatched(BatchLinkingService.java:71)
    at org.eclipse.xtext.xbase.resource.BatchLinkableResource.resolveLazyCrossReferences(BatchLinkableResource.java:165)
    at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:528)
    at org.eclipse.xtext.validation.ResourceValidatorImpl.resolveProxies(ResourceValidatorImpl.java:163)
    at org.eclipse.xtext.validation.ResourceValidatorImpl.validate(ResourceValidatorImpl.java:75)
    at org.eclipse.xtext.ui.editor.validation.ValidationJob$1.exec(ValidationJob.java:91)
    at org.eclipse.xtext.ui.editor.validation.ValidationJob$1.exec(ValidationJob.java:1)
    at org.eclipse.xtext.util.concurrent.CancelableUnitOfWork.exec(CancelableUnitOfWork.java:26)
    at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:121)
    at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.internalReadOnly(XtextDocument.java:520)
    at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.readOnly(XtextDocument.java:492)
    at org.eclipse.xtext.ui.editor.model.XtextDocument.readOnly(XtextDocument.java:133)
    at org.eclipse.xtext.ui.editor.validation.ValidationJob.createIssues(ValidationJob.java:86)
    at org.eclipse.xtext.ui.editor.validation.ValidationJob.run(ValidationJob.java:67)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)
cdietrich commented 7 years ago

still an issue in 2.13 problem is using @Extension on an inferred field type.