AssertionError opening a project with IntelliJ IDEA #464
Description
Using 0.0.47 and IntelliJ IDEA 2025.3.1.1.
I am not getting this all the time but quite often:
java.lang.AssertionError
at io.spring.javaformat.eclipse.jdt.jdk17.internal.formatter.TokenManager.lastIndexIn(TokenManager.java:204)
at io.spring.javaformat.formatter.jdk17.eclipse.CodeLineBreakPreparator$Vistor.visit(CodeLineBreakPreparator.java:89)
at io.spring.javaformat.eclipse.jdt.jdk17.core.dom.FieldDeclaration.accept0(FieldDeclaration.java:265)
at io.spring.javaformat.eclipse.jdt.jdk17.core.dom.ASTNode.accept(ASTNode.java:3300)
at io.spring.javaformat.eclipse.jdt.jdk17.core.dom.ASTNode.acceptChildren(ASTNode.java:3371)
at io.spring.javaformat.eclipse.jdt.jdk17.core.dom.TypeDeclaration.accept0(TypeDeclaration.java:498)
at io.spring.javaformat.eclipse.jdt.jdk17.core.dom.ASTNode.accept(ASTNode.java:3300)
at io.spring.javaformat.eclipse.jdt.jdk17.core.dom.ASTNode.acceptChildren(ASTNode.java:3371)
at io.spring.javaformat.eclipse.jdt.jdk17.core.dom.CompilationUnit.accept0(CompilationUnit.java:258)
at io.spring.javaformat.eclipse.jdt.jdk17.core.dom.ASTNode.accept(ASTNode.java:3300)
at io.spring.javaformat.formatter.jdk17.eclipse.CodeLineBreakPreparator.apply(CodeLineBreakPreparator.java:44)
at io.spring.javaformat.eclipse.jdt.jdk17.internal.formatter.ExtendedCodeFormatter.lambda$applyPreparators$1(ExtendedCodeFormatter.java:112)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179)
at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
at io.spring.javaformat.eclipse.jdt.jdk17.internal.formatter.ExtendedCodeFormatter.applyPreparators(ExtendedCodeFormatter.java:112)
at io.spring.javaformat.eclipse.jdt.jdk17.internal.formatter.ExtendedCodeFormatter.prepareWraps(ExtendedCodeFormatter.java:106)
at io.spring.javaformat.eclipse.jdt.jdk17.internal.formatter.DefaultCodeFormatter.prepareFormattedCode(DefaultCodeFormatter.java:230)
at io.spring.javaformat.eclipse.jdt.jdk17.internal.formatter.DefaultCodeFormatter.format(DefaultCodeFormatter.java:184)
at io.spring.javaformat.formatter.Formatter.format(Formatter.java:153)
at io.spring.javaformat.formatter.Formatter.format(Formatter.java:148)
at io.spring.format.formatter.intellij.formatting.SpringJavaFormatFormattingService.formatDocument(SpringJavaFormatFormattingService.java:87)
at com.intellij.formatting.service.AbstractDocumentFormattingService.formatElement(AbstractDocumentFormattingService.java:47)
at com.intellij.formatting.service.AbstractDocumentFormattingService.formatElement(AbstractDocumentFormattingService.java:31)
at com.intellij.formatting.service.FormattingServiceUtil.formatElement(FormattingServiceUtil.java:67)
at com.intellij.psi.impl.source.codeStyle.CodeStyleManagerImpl.reformat(CodeStyleManagerImpl.java:82)
at com.intellij.psi.impl.source.codeStyle.CodeStyleManagerImpl.reformat(CodeStyleManagerImpl.java:66)
at com.intellij.codeInsight.completion.ConstructorInsertHandler.handleInsert(ConstructorInsertHandler.java:140)
at com.intellij.codeInsight.completion.ConstructorInsertHandler.handleInsert(ConstructorInsertHandler.java:50)
at com.intellij.codeInsight.lookup.LookupElementDecorator.handleInsert(LookupElementDecorator.java:65)
at com.intellij.codeInsight.lookup.LookupElementDecorator.handleInsert(LookupElementDecorator.java:75)
at com.intellij.codeInsight.completion.CodeCompletionHandlerBase.lambda$insertItem$15(CodeCompletionHandlerBase.java:735)
at com.intellij.util.indexing.FileBasedIndex.lambda$ignoreDumbMode$0(FileBasedIndex.java:252)
at com.intellij.openapi.util.RecursionManager$1.computePreventingRecursion(RecursionManager.java:113)
at com.intellij.util.indexing.FileBasedIndexEx.ignoreDumbMode(FileBasedIndexEx.java:701)
at com.intellij.util.indexing.FileBasedIndex.ignoreDumbMode(FileBasedIndex.java:251)
at com.intellij.util.indexing.DumbModeAccessType.ignoreDumbMode(DumbModeAccessType.java:41)
at com.intellij.codeInsight.completion.CodeCompletionHandlerBase.lambda$insertItem$16(CodeCompletionHandlerBase.java:734)
at com.intellij.openapi.application.impl.AppImplKt$runnableUnitFunction$1.invoke(appImpl.kt:124)
at com.intellij.openapi.application.impl.AppImplKt$runnableUnitFunction$1.invoke(appImpl.kt:124)
at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.runWriteAction(NestedLocksThreadingSupport.kt:999)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:1130)
at com.intellij.codeInsight.completion.CodeCompletionHandlerBase.insertItem(CodeCompletionHandlerBase.java:718)
at com.intellij.codeInsight.completion.CodeCompletionHandlerBase.doInsertItemForSingleCaret(CodeCompletionHandlerBase.java:663)
at com.intellij.codeInsight.completion.CodeCompletionHandlerBase.lambda$doInsertItem$13(CodeCompletionHandlerBase.java:638)
at com.intellij.openapi.editor.impl.CaretModelImpl.lambda$runForEachCaret$3(CaretModelImpl.java:304)
at com.intellij.openapi.editor.impl.CaretModelImpl.doWithCaretMerging(CaretModelImpl.java:416)
at com.intellij.openapi.editor.impl.CaretModelImpl.runForEachCaret(CaretModelImpl.java:314)
at com.intellij.openapi.editor.impl.CaretModelImpl.runForEachCaret(CaretModelImpl.java:290)
at com.intellij.codeInsight.completion.CodeCompletionHandlerBase.doInsertItem(CodeCompletionHandlerBase.java:636)
at com.intellij.codeInsight.completion.CodeCompletionHandlerBase.insertItemHonorBlockSelection(CodeCompletionHandlerBase.java:595)
at com.intellij.codeInsight.completion.CodeCompletionHandlerBase.lookupItemSelected(CodeCompletionHandlerBase.java:543)
at com.intellij.codeInsight.completion.CompletionProgressIndicator.itemSelected(CompletionProgressIndicator.java:223)
at com.intellij.codeInsight.completion.BaseCompletionLookupArranger.itemSelected(BaseCompletionLookupArranger.java:236)
at com.intellij.codeInsight.lookup.impl.LookupImpl.fireItemSelected(LookupImpl.java:1098)
at com.intellij.codeInsight.lookup.impl.LookupImpl.finishLookupInWritableFile(LookupImpl.java:688)
at com.intellij.codeInsight.lookup.impl.LookupImpl.lambda$finishLookup$4(LookupImpl.java:644)
at com.intellij.openapi.command.impl.CoreCommandProcessor.lambda$executeCommand$0(CoreCommandProcessor.java:123)
at com.intellij.openapi.application.impl.AppImplKt$rethrowCheckedExceptions$2.invoke(appImpl.kt:126)
at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.doRunWriteIntentReadAction(NestedLocksThreadingSupport.kt:737)
at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.runPreventiveWriteIntentReadAction(NestedLocksThreadingSupport.kt:711)
at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.runWriteIntentReadAction(NestedLocksThreadingSupport.kt:665)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteIntentReadAction(ApplicationImpl.java:1185)
at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:122)
at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:77)
at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:65)
at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:43)
at com.intellij.codeInsight.lookup.impl.LookupImpl.finishLookup(LookupImpl.java:642)
at com.intellij.codeInsight.lookup.impl.LookupImpl.finishLookup(LookupImpl.java:627)
at com.intellij.codeInsight.lookup.impl.actions.ChooseItemAction$Handler.doExecute(ChooseItemAction.java:69)
at com.intellij.openapi.editor.actionSystem.DynamicEditorActionHandler.doExecute(DynamicEditorActionHandler.java:68)
at com.intellij.openapi.editor.actionSystem.EditorActionHandler.lambda$execute$4(EditorActionHandler.java:215)
at com.intellij.openapi.editor.actionSystem.EditorActionHandler.doIfEnabled(EditorActionHandler.java:95)
at com.intellij.openapi.editor.actionSystem.EditorActionHandler.execute(EditorActionHandler.java:214)
at com.intellij.openapi.editor.actionSystem.EditorAction.executeHandler(EditorAction.java:175)
at com.intellij.openapi.editor.actionSystem.EditorAction.lambda$actionPerformed$0(EditorAction.java:110)
at com.intellij.openapi.command.impl.CoreCommandProcessor.lambda$executeCommand$2(CoreCommandProcessor.java:143)
at com.intellij.openapi.application.impl.AppImplKt$rethrowCheckedExceptions$2.invoke(appImpl.kt:126)
at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.doRunWriteIntentReadAction(NestedLocksThreadingSupport.kt:737)
at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.runPreventiveWriteIntentReadAction(NestedLocksThreadingSupport.kt:711)
at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.runWriteIntentReadAction(NestedLocksThreadingSupport.kt:665)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteIntentReadAction(ApplicationImpl.java:1185)
at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:139)
at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:77)
at com.intellij.openapi.editor.actionSystem.EditorAction.actionPerformed(EditorAction.java:108)
at com.intellij.openapi.editor.actionSystem.EditorAction.actionPerformed(EditorAction.java:90)
at com.intellij.openapi.actionSystem.ex.ActionUtil.doPerformActionOrShowPopup(ActionUtil.kt:437)
at com.intellij.openapi.keymap.impl.ActionProcessor.performAction(ActionProcessor.kt:26)
at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher$actionProcessor$1.performAction(IdeKeyEventDispatcher.kt:499)
at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcherKt.doPerformActionInner$lambda$0$0(IdeKeyEventDispatcher.kt:824)
at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:109)
at com.intellij.openapi.application.TransactionGuardImpl.performUserActivity(TransactionGuardImpl.java:98)
at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcherKt.doPerformActionInner$lambda$0(IdeKeyEventDispatcher.kt:823)
at com.intellij.openapi.actionSystem.impl.ActionManagerImpl.performWithActionCallbacks$lambda$0(ActionManagerImpl.kt:1164)
at com.intellij.concurrency.ThreadContext.installThreadContext(threadContext.kt:305)
at com.intellij.openapi.actionSystem.impl.ActionManagerImpl.performWithActionCallbacks(ActionManagerImpl.kt:1162)
at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcherKt.doPerformActionInner(IdeKeyEventDispatcher.kt:821)
at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcherKt.access$doPerformActionInner(IdeKeyEventDispatcher.kt:1)
at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher.processAction(IdeKeyEventDispatcher.kt:554)
at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher.processAction(IdeKeyEventDispatcher.kt:512)
at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher.processActionOrWaitSecondStroke(IdeKeyEventDispatcher.kt:451)
at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher.inInitState(IdeKeyEventDispatcher.kt:444)
at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher.dispatchKeyEvent(IdeKeyEventDispatcher.kt:306)
at com.intellij.ide.IdeEventQueue.dispatchKeyEvent(IdeEventQueue.kt:555)
at com.intellij.ide.IdeEventQueue._dispatchEvent$lambda$3(IdeEventQueue.kt:509)
at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.doRunWriteIntentReadAction(NestedLocksThreadingSupport.kt:737)
at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.runPreventiveWriteIntentReadAction(NestedLocksThreadingSupport.kt:711)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.kt:509)
at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$0$0$0$0(IdeEventQueue.kt:337)
at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:901)
at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$0$0$0(IdeEventQueue.kt:336)
at com.intellij.ide.IdeEventQueueKt.performActivity$lambda$1(IdeEventQueue.kt:1065)
at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:117)
at com.intellij.ide.IdeEventQueueKt.performActivity(IdeEventQueue.kt:1065)
at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$0(IdeEventQueue.kt:331)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.kt:371)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:207)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:92)
Suppressed: com.intellij.util.ExceptionUtilRt$RethrownStack: Rethrown at
at com.intellij.util.ExceptionUtilRt.addRethrownStackAsSuppressed(ExceptionUtilRt.java:43)
at com.intellij.util.ExceptionUtilRt.rethrowUnchecked(ExceptionUtilRt.java:16)
at com.intellij.util.ExceptionUtil.rethrowUnchecked(ExceptionUtil.java:131)
at com.intellij.openapi.command.impl.CommandProcessorImpl.finishCommand(CommandProcessorImpl.java:30)
at com.intellij.openapi.command.impl.CoreCommandProcessor.lambda$executeCommand$1(CoreCommandProcessor.java:151)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$executeNonCancelableSection$3(CoreProgressManager.java:325)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:792)
at com.intellij.openapi.progress.impl.CoreProgressManager.computeUnderProgress(CoreProgressManager.java:748)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$computeInNonCancelableSection$4(CoreProgressManager.java:333)
at com.intellij.openapi.progress.Cancellation.computeInNonCancelableSection(Cancellation.java:150)
at com.intellij.openapi.progress.impl.CoreProgressManager.computeInNonCancelableSection(CoreProgressManager.java:333)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeNonCancelableSection(CoreProgressManager.java:324)
at com.intellij.openapi.command.impl.CoreCommandProcessor.lambda$executeCommand$2(CoreCommandProcessor.java:150)
... 45 more
This happens with File > Open Project.