NPE out of the blue while working with JS Files about manifold

[rsmckinney]

Hi @mhossain419.

There are a couple of Javascript Manifold fixes coming with the next release (0.51-alpha), however I'm not sure if they address this specific issue. Can you provide some context? For instance, can you provide the JS file you were using when the exception appeared? Also if you can provide steps to reproduce the issue, that would be great.

Thanks for reporting the issue!

Note, the Javascript Manifold is still "experimental", as such it should be considered somewhat unstable until it graduates to a stable, supported Manifold component.

[mmirdha]

Hi @rsmckinney,

The errors happen at random. Most recently it happened when I opened the find window and I was on Java file. I will try to document my actions every time it happens and post it later.

[mmirdha]

Crashed again while I was typing "private static final" in a java class. Stacktrace:

java.lang.RuntimeException: Incompatible types: Integer vs: rangeItem
at manifold.api.json.Json.mergeTypes(Json.java:269)
at manifold.api.json.JsonListType.merge(JsonListType.java:148)
at manifold.api.json.JsonListType.merge(JsonListType.java:35)
at manifold.api.json.Json.mergeTypesNoUnion(Json.java:302)
at manifold.api.json.Json.mergeTypes(Json.java:251)
at manifold.api.json.JsonStructureType.addMember(JsonStructureType.java:381)
at manifold.api.json.Json.transformJsonObject(Json.java:170)
at manifold.api.json.Json.transformJsonObject(Json.java:125)
at manifold.api.json.Json.transformJsonObject(Json.java:167)
at manifold.api.json.Json.transformJsonObject(Json.java:125)
at manifold.api.json.Json.transformJsonObject(Json.java:167)
at manifold.api.json.Json.transformJsonObject(Json.java:125)
at manifold.api.json.Json.transformJsonObject(Json.java:194)
at manifold.api.json.Json.transformJsonObject(Json.java:125)
at manifold.api.json.Json.transformJsonObject(Json.java:167)
at manifold.api.json.Json.transformJsonObject(Json.java:125)
at manifold.api.json.Json.transformJsonObject(Json.java:167)
at manifold.api.json.JsonModel.init(JsonModel.java:73)
at manifold.api.json.JsonModel.(JsonModel.java:48)
at manifold.api.json.JsonTypeManifold.lambda$init$0(JsonTypeManifold.java:31)
at manifold.api.type.ResourceFileTypeManifold.lambda$buildFqnToModelCache$0(ResourceFileTypeManifold.java:97)
at manifold.util.concurrent.LocklessLazyVar$1.init(LocklessLazyVar.java:90)
at manifold.util.concurrent.LocklessLazyVar.get(LocklessLazyVar.java:40)
at manifold.api.type.ResourceFileTypeManifold.contribute(ResourceFileTypeManifold.java:376)
at manifold.ij.extensions.ManifoldPsiClassCache.createPrimaryType(ManifoldPsiClassCache.java:238)
at manifold.ij.extensions.ManifoldPsiClassCache.getPsiClass_NoShortCircuit(ManifoldPsiClassCache.java:132)
at manifold.ij.extensions.ManifoldPsiClassCache._getPsiClass(ManifoldPsiClassCache.java:90)
at manifold.ij.extensions.ManifoldPsiClassCache.getPsiClass(ManifoldPsiClassCache.java:78)
at manifold.ij.extensions.ManShortNamesCache.findPsiClasses(ManShortNamesCache.java:65)
at manifold.ij.extensions.ManShortNamesCache.findPsiClasses(ManShortNamesCache.java:47)
at manifold.ij.extensions.ManShortNamesCache.getClassesByName(ManShortNamesCache.java:40)
at com.intellij.psi.impl.CompositeShortNamesCache.getClassesByName(CompositeShortNamesCache.java:76)
at com.intellij.psi.impl.search.AllClassesSearchExecutor.lambda$processClassesByNames$1(AllClassesSearchExecutor.java:68)
at com.intellij.openapi.project.DumbService.lambda$runReadActionInSmartMode$0(DumbService.java:79)
at com.intellij.openapi.project.DumbService.runReadActionInSmartMode(DumbService.java:110)
at com.intellij.openapi.project.DumbService.runReadActionInSmartMode(DumbService.java:79)
at com.intellij.psi.impl.search.AllClassesSearchExecutor.processClassesByNames(AllClassesSearchExecutor.java:68)
at com.intellij.codeInsight.completion.AllClassesGetter.processJavaClasses(AllClassesGetter.java:136)
at com.intellij.codeInsight.completion.AllClassesGetter.processJavaClasses(AllClassesGetter.java:122)
at com.intellij.codeInsight.completion.JavaClassNameCompletionContributor.addAllClasses(JavaClassNameCompletionContributor.java:142)
at com.intellij.codeInsight.completion.JavaNoVariantsDelegator.suggestNonImportedClasses(JavaNoVariantsDelegator.java:186)
at com.intellij.codeInsight.completion.JavaNoVariantsDelegator.fillCompletionVariants(JavaNoVariantsDelegator.java:76)
at com.intellij.codeInsight.completion.CompletionService.getVariantsFromContributors(CompletionService.java:87)
at com.intellij.codeInsight.completion.CompletionResultSet.runRemainingContributors(CompletionResultSet.java:149)
at com.intellij.codeInsight.completion.CompletionResultSet.runRemainingContributors(CompletionResultSet.java:142)
at com.intellij.codeInsight.template.impl.LiveTemplateCompletionContributor$2.addCompletions(LiveTemplateCompletionContributor.java:96)
at com.intellij.codeInsight.completion.CompletionProvider.addCompletionVariants(CompletionProvider.java:36)
at com.intellij.codeInsight.completion.CompletionContributor.fillCompletionVariants(CompletionContributor.java:141)
at com.intellij.codeInsight.completion.CompletionService.getVariantsFromContributors(CompletionService.java:87)
at com.intellij.codeInsight.completion.CompletionResultSet.runRemainingContributors(CompletionResultSet.java:149)
at com.intellij.codeInsight.completion.CompletionResultSet.runRemainingContributors(CompletionResultSet.java:142)
at manifold.ij.extensions.ManJavaCompletionContributor.fillCompletionVariants(ManJavaCompletionContributor.java:25)
at com.intellij.codeInsight.completion.CompletionService.getVariantsFromContributors(CompletionService.java:87)
at com.intellij.codeInsight.completion.impl.CompletionServiceImpl.performCompletion(CompletionServiceImpl.java:63)
at com.intellij.codeInsight.completion.CompletionProgressIndicator.calculateItems(CompletionProgressIndicator.java:827)
at com.intellij.codeInsight.completion.CompletionProgressIndicator.runContributors(CompletionProgressIndicator.java:812)
at com.intellij.codeInsight.completion.CodeCompletionHandlerBase.lambda$null$2(CodeCompletionHandlerBase.java:272)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1168)
at com.intellij.codeInsight.completion.AsyncCompletion.tryReadOrCancel(CompletionThreading.java:169)
at com.intellij.codeInsight.completion.CodeCompletionHandlerBase.lambda$doComplete$3(CodeCompletionHandlerBase.java:269)
at com.intellij.codeInsight.completion.AsyncCompletion.lambda$null$0(CompletionThreading.java:95)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:164)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:582)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:532)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:87)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:151)
at com.intellij.codeInsight.completion.AsyncCompletion.lambda$startThread$1(CompletionThreading.java:91)
at com.intellij.openapi.application.impl.ApplicationImpl$1.run(ApplicationImpl.java:314)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

[rsmckinney]

Ok I've reproduced this issue and have a fix which will be included in the next release (0.51-alpha), likely available early next week. Thanks again for reporting this,