Too many error messages and exceptions.

[kohnish]

Some of the messages, I noticed. Is it excepted? Should it be printing to stderr by default?

[stderr] Attachments:
[stderr] causeThrowable
[stderr] java.lang.UnsupportedOperationException: Should not be called
[stderr] 	at org.jetbrains.kotlin.resolve.lazy.NoTopLevelDescriptorProvider.shouldNotBeCalled(TopLevelDescriptorProvider.kt:36)
[stderr] 	at org.jetbrains.kotlin.resolve.lazy.NoTopLevelDescriptorProvider.getPackageFragment(TopLevelDescriptorProvider.kt:39)
[stderr] 	at org.jetbrains.kotlin.resolve.DeclarationResolver.getTopLevelDescriptorsByFqName(DeclarationResolver.kt:107)
[stderr] 	at org.jetbrains.kotlin.resolve.DeclarationResolver.checkRedeclarationsInPackages(DeclarationResolver.kt:86)
[stderr] 	at org.jetbrains.kotlin.resolve.LazyTopDownAnalyzer.analyzeDeclarations(LazyTopDownAnalyzer.kt:216)
[stderr] 	at org.jetbrains.kotlin.types.expressions.LocalClassifierAnalyzer.processClassOrObject(LocalClassifierAnalyzer.kt:121)
[stderr] 	at org.jetbrains.kotlin.types.expressions.ExpressionTypingVisitorForStatements.visitClass(ExpressionTypingVisitorForStatements.java:172)
[stderr] 	at org.jetbrains.kotlin.types.expressions.ExpressionTypingVisitorForStatements.visitClass(ExpressionTypingVisitorForStatements.java:73)
[stderr] 	at org.jetbrains.kotlin.psi.KtClass.accept(KtClass.kt:22)
[stderr] 	at org.jetbrains.kotlin.types.expressions.ExpressionTypingVisitorDispatcher.lambda$getTypeInfo$0(ExpressionTypingVisitorDispatcher.java:176)
[stderr] 	at org.jetbrains.kotlin.util.PerformanceCounter.time(PerformanceCounter.kt:90)
[stderr] 	at org.jetbrains.kotlin.types.expressions.ExpressionTypingVisitorDispatcher.getTypeInfo(ExpressionTypingVisitorDispatcher.java:165)
[stderr] 	at org.jetbrains.kotlin.types.expressions.ExpressionTypingVisitorDispatcher.getTypeInfo(ExpressionTypingVisitorDispatcher.java:148)
[stderr] 	at org.jetbrains.kotlin.types.expressions.ExpressionTypingServices.getTypeInfo(ExpressionTypingServices.java:121)
[stderr] 	at org.jetbrains.kotlin.types.expressions.ExpressionTypingServices.getTypeInfo(ExpressionTypingServices.java:96)
[stderr] 	at org.javacs.kt.compiler.Compiler.compileKtExpression(Compiler.kt:561)
[stderr] 	at org.javacs.kt.CompiledFile.bindingContextOf(CompiledFile.kt:51)
[stderr] 	at org.javacs.kt.CompiledFile.referenceAtPoint(CompiledFile.kt:76)
[stderr] 	at org.javacs.kt.hover.HoversKt.hoverAt(Hovers.kt:26)
[stderr] 	at org.javacs.kt.KotlinTextDocumentService$hover$1.invoke(KotlinTextDocumentService.kt:114)
[stderr] 	at org.javacs.kt.KotlinTextDocumentService$hover$1.invoke(KotlinTextDocumentService.kt:109)
[stderr] 	at org.javacs.kt.util.AsyncExecutor.compute$lambda$2(AsyncExecutor.kt:19)
[stderr] 	at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768)
[stderr] 	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
[stderr] 	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
[stderr] 	at java.base/java.lang.Thread.run(Thread.java:840)

[stderr] Mar 30, 2024 5:58:49 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint fallbackResponseError
[stderr] SEVERE: Internal error: java.lang.StringIndexOutOfBoundsException: begin 0, end 20, length 13
[stderr] java.util.concurrent.CompletionException: java.lang.StringIndexOutOfBoundsException: begin 0, end 20, length 13
[stderr] 	at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315)
[stderr] 	at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320)
[stderr] 	at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1770)
[stderr] 	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
[stderr] 	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
[stderr] 	at java.base/java.lang.Thread.run(Thread.java:840)
[stderr] Caused by: java.lang.StringIndexOutOfBoundsException: begin 0, end 20, length 13
[stderr] 	at java.base/java.lang.String.checkBoundsBeginEnd(String.java:4606)
[stderr] 	at java.base/java.lang.String.substring(String.java:2709)
[stderr] 	at java.base/java.lang.String.subSequence(String.java:2747)
[stderr] 	at org.javacs.kt.signaturehelp.SignatureHelpKt.activeParameter(SignatureHelp.kt:138)
[stderr] 	at org.javacs.kt.signaturehelp.SignatureHelpKt.getSignatureTriplet(SignatureHelp.kt:52)
[stderr] 	at org.javacs.kt.signaturehelp.SignatureHelpKt.fetchSignatureHelpAt(SignatureHelp.kt:25)
[stderr] 	at org.javacs.kt.KotlinTextDocumentService$signatureHelp$1.invoke(KotlinTextDocumentService.kt:204)
[stderr] 	at org.javacs.kt.KotlinTextDocumentService$signatureHelp$1.invoke(KotlinTextDocumentService.kt:199)
[stderr] 	at org.javacs.kt.util.AsyncExecutor.compute$lambda$2(AsyncExecutor.kt:19)
[stderr] 	at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768)
[stderr] 	... 3 more
[stderr] 

[stderr] SEVERE: Internal error: java.lang.StringIndexOutOfBoundsException: begin 0, end 17, length 13
[stderr] java.util.concurrent.CompletionException: java.lang.StringIndexOutOfBoundsException: begin 0, end 17, length 13
[stderr] 	at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315)
[stderr] 	at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320)
[stderr] 	at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1770)
[stderr] 	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
[stderr] 	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
[stderr] 	at java.base/java.lang.Thread.run(Thread.java:840)
[stderr] Caused by: java.lang.StringIndexOutOfBoundsException: begin 0, end 17, length 13
[stderr] 	at java.base/java.lang.String.checkBoundsBeginEnd(String.java:4606)
[stderr] 	at java.base/java.lang.String.substring(String.java:2709)
[stderr] 	at java.base/java.lang.String.subSequence(String.java:2747)
[stderr] 	at org.javacs.kt.signaturehelp.SignatureHelpKt.activeParameter(SignatureHelp.kt:138)
[stderr] 	at org.javacs.kt.signaturehelp.SignatureHelpKt.getSignatureTriplet(SignatureHelp.kt:52)
[stderr] 	at org.javacs.kt.signaturehelp.SignatureHelpKt.fetchSignatureHelpAt(SignatureHelp.kt:25)
[stderr] 	at org.javacs.kt.KotlinTextDocumentService$signatureHelp$1.invoke(KotlinTextDocumentService.kt:204)
[stderr] 	at org.javacs.kt.KotlinTextDocumentService$signatureHelp$1.invoke(KotlinTextDocumentService.kt:199)
[stderr] 	at org.javacs.kt.util.AsyncExecutor.compute$lambda$2(AsyncExecutor.kt:19)
[stderr] 	at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768)
[stderr] 	... 3 more
[stderr] 

[jhkersul]

Same thing here. A lot of errors being thrown.

[RedstoneWizard08]

Same here.

[fwcd]

The UnsupportedOperationExceptions originating deeply within the Kotlin compiler are usually pretty hard to track down, since the Kotlin compiler API lacks documentation about how it is intended to be used.

The out of bounds exceptions in SignatureHelpKt look fixable, could you provide a minimal reproducible example (i.e. a small demo project where this happens)?