dagger: IllegalStateException: Unsupported nesting ANONYMOUS on hilt 2.47

@onXAdamBrown Just fyi, we have a 2.48 release planned for next week, so we’re going to push this into that release.

(Note: Dagger doesn’t maintain multiple release branches so it would be difficult for us to cut a 2.47.1 release with only this change without including the other larger (potentially breaking) changes.)

Thanks for the sample code, we have an idea on what is going on.

To workaround the issue for now, please specify the property type as to avoid Kotlin’s type resolution using an anonymous class, i.e.:

+ private val anotherField: MyInterface by lazy {
- private val anotherField by lazy {
        object: MyInterface {
            override fun doSomething() {
                injectedField.doWork()
            }
        }
    }

Fixed in https://github.com/androidx/androidx/commit/da6bd1a2f983372fd3ce34753d0b93bac7ec0361 which is the library Dagger uses for processing.

So just to be clear we’re waiting for a new Dagger release to fix this?

Yes, that’s correct.

Any chance of a point release for it?

Yes, I’ll try to get a release out early next week.

Thanks to the recent snapshot, I was able to identify the exact place in my code that causes an error. However, I don’t fully understand why Dagger complains about it. Note: I use only Dagger without Hilt.

There is a simplified snippet

package com.example.my.fragment

class MyFragment {

    @Inject lateinit var injectedField: InjectedFieldType

    private val anotherField by lazy {
        object: MyInterface {
            override fun doSomething() {
                injectedField.doWork()
            }
        }
    }
}

anotherField causes the problem. If I make it public, then compilation passes. But this field is not injected by Dagger. Am I missing something?

At first I was thinking that it is somehow related to injectedField usage inside anotherField. When I remove this usage, compilation still fails with the same error.

package com.example.my.fragment

class MyFragment {

    @Inject lateinit var injectedField: InjectedFieldType

    private val anotherField by lazy {
        object: MyInterface {
            override fun doSomething() {
-                injectedField.doWork()
+                TODO()
            }
        }
    }
}

Here is the full error

Caused by: com.sun.tools.javac.processing.AnnotationProcessingError: java.lang.IllegalStateException: Unsupported nesting ANONYMOUS - On element <unnamed>.fragment.MyFragment.<init>.anotherField$2.invoke.<unnamed>
        at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(Unknown Source)
        at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(Unknown Source)
        at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(Unknown Source)
        at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(Unknown Source)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.processAnnotations(Unknown Source)
        ... 38 more
Caused by: java.lang.IllegalStateException: Unsupported nesting ANONYMOUS - On element <unnamed>.fragment.MyFragment.<init>.anotherField$2.invoke.<unnamed>
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.kotlin.JvmDescriptorTypeVisitor.elementError(JvmDescriptorUtils.kt:192)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.kotlin.JvmDescriptorTypeVisitor.getInternalName(JvmDescriptorUtils.kt:172)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.kotlin.JvmDescriptorTypeVisitor.visitDeclared(JvmDescriptorUtils.kt:117)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.kotlin.JvmDescriptorTypeVisitor.visitDeclared(JvmDescriptorUtils.kt:113)
        at jdk.compiler/com.sun.tools.javac.code.Type$ClassType.accept(Unknown Source)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.kotlin.JvmDescriptorTypeVisitor.visitExecutable(JvmDescriptorUtils.kt:139)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.kotlin.JvmDescriptorTypeVisitor.visitExecutable(JvmDescriptorUtils.kt:113)
        at jdk.compiler/com.sun.tools.javac.code.Type$MethodType.accept(Unknown Source)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.kotlin.JvmDescriptorUtilsKt.descriptor(JvmDescriptorUtils.kt:57)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.kotlin.JvmDescriptorUtilsKt.descriptor(JvmDescriptorUtils.kt:55)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.JavacExecutableElement$jvmDescriptor$2.invoke(JavacExecutableElement.kt:32)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.JavacExecutableElement$jvmDescriptor$2.invoke(JavacExecutableElement.kt:31)
        at kotlin.SynchronizedLazyImpl.getValue(LazyJVM.kt:74)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.JavacExecutableElement.getJvmDescriptor(JavacExecutableElement.kt:31)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.JavacTypeElement$_declaredMethods$2.invoke(JavacTypeElement.kt:183)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.JavacTypeElement$_declaredMethods$2.invoke(JavacTypeElement.kt:161)
        at kotlin.SynchronizedLazyImpl.getValue(LazyJVM.kt:74)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.JavacTypeElement.get_declaredMethods(JavacTypeElement.kt:161)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.JavacTypeElement.getSyntheticMethodsForAnnotations(JavacTypeElement.kt:205)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.JavacFieldElement$syntheticMethodForAnnotations$2.invoke(JavacFieldElement.kt:55)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.JavacFieldElement$syntheticMethodForAnnotations$2.invoke(JavacFieldElement.kt:53)
        at kotlin.SynchronizedLazyImpl.getValue(LazyJVM.kt:74)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.JavacFieldElement.getSyntheticMethodForAnnotations(JavacFieldElement.kt:53)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.JavacFieldElement.getAllAnnotations(JavacFieldElement.kt:39)
        at dagger.spi.shaded.androidx.room.compiler.processing.XAnnotated.getAnnotations(XAnnotated.kt:38)
        at dagger.spi.shaded.androidx.room.compiler.processing.XAnnotated.hasAnnotation(XAnnotated.kt:88)
        at dagger.spi.shaded.androidx.room.compiler.processing.XAnnotated.hasAnyAnnotation(XAnnotated.kt:100)
        at dagger.internal.codegen.binding.InjectionAnnotations.hasInjectAnnotation(InjectionAnnotations.java:337)
        at dagger.internal.codegen.validation.InjectValidator.validateForMembersInjectionInternalUncached(InjectValidator.java:372)
        at dagger.internal.codegen.base.Util.reentrantComputeIfAbsent(Util.java:33)
        at dagger.internal.codegen.validation.InjectValidator.validateForMembersInjectionInternal(InjectValidator.java:361)
        at dagger.internal.codegen.validation.InjectValidator.validateForMembersInjection(InjectValidator.java:357)
        at dagger.internal.codegen.validation.InjectBindingRegistryImpl.tryRegisterMembersInjectedType(InjectBindingRegistryImpl.java:305)
        at dagger.internal.codegen.validation.InjectBindingRegistryImpl.getOrFindMembersInjectionBinding(InjectBindingRegistryImpl.java:367)
        at dagger.internal.codegen.binding.BindingGraphFactory$Resolver.lookUpMembersInjectionBinding(BindingGraphFactory.java:466)
        at dagger.internal.codegen.binding.BindingGraphFactory$Resolver.resolveMembersInjection(BindingGraphFactory.java:770)
        at dagger.internal.codegen.binding.BindingGraphFactory$Resolver.access$1300(BindingGraphFactory.java:302)
        at dagger.internal.codegen.binding.BindingGraphFactory.lambda$createLegacyBindingGraph$5(BindingGraphFactory.java:208)
        at dagger.internal.codegen.binding.BindingGraphFactory.createLegacyBindingGraph(BindingGraphFactory.java:205)
        at dagger.internal.codegen.binding.BindingGraphFactory.createLegacyBindingGraph(BindingGraphFactory.java:234)
        at dagger.internal.codegen.binding.BindingGraphFactory.create(BindingGraphFactory.java:112)
        at dagger.internal.codegen.processingstep.ComponentProcessingStep.processRootComponent(ComponentProcessingStep.java:117)
        at dagger.internal.codegen.processingstep.ComponentProcessingStep.process(ComponentProcessingStep.java:88)
        at dagger.internal.codegen.processingstep.ComponentProcessingStep.process(ComponentProcessingStep.java:50)
        at dagger.internal.codegen.processingstep.TypeCheckingProcessingStep.lambda$process$0(TypeCheckingProcessingStep.java:82)
        at com.google.common.collect.RegularImmutableMap.forEach(RegularImmutableMap.java:196)
        at dagger.internal.codegen.processingstep.TypeCheckingProcessingStep.process(TypeCheckingProcessingStep.java:70)
        at dagger.internal.codegen.processingstep.TypeCheckingProcessingStep.process(TypeCheckingProcessingStep.java:48)
        at dagger.spi.shaded.androidx.room.compiler.processing.XProcessingStep.process(XProcessingStep.kt:59)
        at dagger.spi.shaded.androidx.room.compiler.processing.CommonProcessorDelegate.processRound(XBasicAnnotationProcessor.kt:130)
        at dagger.spi.shaded.androidx.room.compiler.processing.javac.JavacBasicAnnotationProcessor.process(JavacBasicAnnotationProcessor.kt:73)
        at org.jetbrains.kotlin.kapt3.base.incremental.IncrementalProcessor.process(incrementalProcessors.kt:90)
        at org.jetbrains.kotlin.kapt3.base.ProcessorWrapper.process(annotationProcessing.kt:197)
        ... 43 more

Hi @theobch, sorry we were waiting on a few dependencies to be updated.

The fix should be in the HEAD-SNAPSHOT artifacts once this run finished: https://github.com/google/dagger/actions/runs/5665122541

I have the same problem. When running debug for https://github.com/google/dagger/blob/master/java/dagger/internal/codegen/validation/InjectValidator.java#L380, the last Element was a regular Fragment with nothing special so im kinda stuck

I’ve tried the HEAD-SNAPSHOT version, but nothing has changed regarding error message, do you confirm no new version has been pushed yet (at the time of writing this comment) ?

No, it has not been pushed yet. I’ll update this thread once it’s out.

Finally, I’ve put a breakpoint in androidx.room.compiler.processing.javac.kotlin.Element.internalName but it is never reached, as apparently the JvmDescriptorUtils.kt (which contains this Element#internalName extension) is located in dagger.spi.shaded.androidx.room and I can’t manage to obtain source code to but a breakpoint in it

If you have access to https://github.com/google/dagger/blob/master/java/dagger/internal/codegen/validation/InjectValidator.java#L380 source then you should be able to get pretty close to where the issue is happening in your code by inspecting the elements there.