IDEA 2023.2 google-java-format (1.7.0.6) AssertionError

まず、stack trace で参照されている _01_demo.java ファイルを使用して、IntelliJ IDEA 2023.2 と google-java-format 1.7.0.6 で失敗を再現します。CodeStyleManagerDecorator と FormattingDocumentModelImpl を通る intention preview の経路を追跡し、その後 formatter がテキスト不一致に関する PsiFileImpl assertion を発生させなくなっていることを確認します。

java.lang.AssertionError: File text mismatch: tree.length=1574; psi.length=1586; this=PsiJavaFile:_01_demo.java; vp=com.intellij.psi.SingleRootFileViewProvider{vFile=LightVirtualFile: /_01_demo.java, content=VirtualFileContent{size=1464}, eventSystemEnabled=false}
	at com.intellij.psi.impl.source.PsiFileImpl.getText(PsiFileImpl.java:313)
	at com.intellij.psi.formatter.FormattingDocumentModelImpl.getDocumentForNonPhysicalFile(FormattingDocumentModelImpl.java:78)
	at com.intellij.psi.formatter.FormattingDocumentModelImpl.getDocumentToBeUsedFor(FormattingDocumentModelImpl.java:61)
	at com.intellij.psi.formatter.FormattingDocumentModelImpl.createOn(FormattingDocumentModelImpl.java:41)
	at com.intellij.lang.java.JavaFormattingModelBuilder.createModel(JavaFormattingModelBuilder.java:41)
	at com.intellij.formatting.CoreFormatterUtil.buildModel(CoreFormatterUtil.java:30)
	at com.intellij.psi.impl.source.codeStyle.CodeFormatterFacade.processText(CodeFormatterFacade.java:179)
	at com.intellij.formatting.service.CoreFormattingService.formatRanges(CoreFormattingService.java:63)
	at com.intellij.psi.impl.source.PostprocessReformattingAspectImpl$ReformatRangesAction.execute(PostprocessReformattingAspectImpl.java:814)
	at com.intellij.psi.impl.source.PostprocessReformattingAspectImpl.lambda$doPostponedFormattingInner$9(PostprocessReformattingAspectImpl.java:423)
	at com.intellij.psi.impl.source.codeStyle.CodeStyleManagerImpl.runWithDocCommentFormattingDisabled(CodeStyleManagerImpl.java:494)
	at com.google.googlejavaformat.intellij.CodeStyleManagerDecorator.runWithDocCommentFormattingDisabled(CodeStyleManagerDecorator.java:206)
	at com.intellij.psi.impl.source.PostprocessReformattingAspectImpl.doPostponedFormattingInner(PostprocessReformattingAspectImpl.java:422)
	at com.intellij.psi.impl.source.PostprocessReformattingAspectImpl.lambda$doPostponedFormatting$7(PostprocessReformattingAspectImpl.java:299)
	at com.intellij.psi.impl.source.PostprocessReformattingAspectImpl.lambda$disablePostprocessFormattingInside$1(PostprocessReformattingAspectImpl.java:120)
	at com.intellij.psi.impl.source.PostprocessReformattingAspectImpl.disablePostprocessFormattingInside(PostprocessReformattingAspectImpl.java:129)
	at com.intellij.psi.impl.source.PostprocessReformattingAspectImpl.disablePostprocessFormattingInside(PostprocessReformattingAspectImpl.java:119)
	at com.intellij.psi.impl.source.PostprocessReformattingAspectImpl.lambda$doPostponedFormatting$8(PostprocessReformattingAspectImpl.java:299)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$executeNonCancelableSection$3(CoreProgressManager.java:222)
	at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:679)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computeUnderProgress(CoreProgressManager.java:635)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$computeInNonCancelableSection$4(CoreProgressManager.java:230)
	at com.intellij.openapi.progress.Cancellation.computeInNonCancelableSection(Cancellation.java:64)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computeInNonCancelableSection(CoreProgressManager.java:230)
	at com.intellij.openapi.progress.impl.CoreProgressManager.executeNonCancelableSection(CoreProgressManager.java:221)
	at com.intellij.psi.impl.source.PostprocessReformattingAspectImpl.doPostponedFormatting(PostprocessReformattingAspectImpl.java:297)
	at com.intellij.psi.impl.source.PostprocessReformattingAspectImpl.doPostponedFormatting(PostprocessReformattingAspectImpl.java:282)
	at com.intellij.psi.impl.source.PostprocessReformattingAspectImpl.decrementPostponedCounter(PostprocessReformattingAspectImpl.java:181)
	at com.intellij.psi.impl.source.PostprocessReformattingAspectImpl.postponeFormattingInside(PostprocessReformattingAspectImpl.java:152)
	at com.intellij.psi.impl.source.PostprocessReformattingAspectImpl.postponeFormattingInside(PostprocessReformattingAspectImpl.java:139)
	at com.intellij.codeInspection.ModCommands.psiUpdate(ModCommands.java:118)
	at com.intellij.codeInspection.ModCommands.psiUpdate(ModCommands.java:145)
	at com.siyeh.ipp.base.MCIntention.perform(MCIntention.java:44)
	at com.intellij.modcommand.ModCommandAction.generatePreview(ModCommandAction.java:59)
	at com.intellij.codeInsight.intention.impl.preview.IntentionPreviewComputable.getModActionPreview$lambda$5(IntentionPreviewComputable.kt:166)
	at com.intellij.model.SideEffectGuard.computeWithAllowedSideEffects(SideEffectGuard.java:25)
	at com.intellij.model.SideEffectGuard.computeWithoutSideEffects(SideEffectGuard.java:18)
	at com.intellij.codeInsight.intention.impl.preview.IntentionPreviewComputable.getModActionPreview(IntentionPreviewComputable.kt:165)
	at com.intellij.codeInsight.intention.impl.preview.IntentionPreviewComputable.invokePreview(IntentionPreviewComputable.kt:97)
	at com.intellij.codeInsight.intention.impl.preview.IntentionPreviewComputable.generatePreview(IntentionPreviewComputable.kt:89)
	at com.intellij.codeInsight.intention.impl.preview.IntentionPreviewComputable.tryCreateDiffContent(IntentionPreviewComputable.kt:65)
	at com.intellij.codeInsight.intention.impl.preview.IntentionPreviewComputable.call(IntentionPreviewComputable.kt:43)
	at com.intellij.codeInsight.intention.impl.preview.IntentionPreviewComputable.call(IntentionPreviewComputable.kt:38)
	at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$OTelMonitor.callWrapped(NonBlockingReadActionImpl.java:832)
	at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$OTelMonitor$MonitoredComputation.call(NonBlockingReadActionImpl.java:864)
	at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.insideReadAction(NonBlockingReadActionImpl.java:602)
	at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.lambda$attemptComputation$4(NonBlockingReadActionImpl.java:565)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1133)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtils.lambda$runInReadActionWithWriteActionPriority$0(ProgressIndicatorUtils.java:76)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtilService.runActionAndCancelBeforeWrite(ProgressIndicatorUtilService.java:63)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runActionAndCancelBeforeWrite(ProgressIndicatorUtils.java:133)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtils.lambda$runWithWriteActionPriority$1(ProgressIndicatorUtils.java:114)
	at com.intellij.openapi.progress.ProgressManager.lambda$runProcess$0(ProgressManager.java:71)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:186)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$executeProcessUnderProgress$13(CoreProgressManager.java:604)
	at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:679)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computeUnderProgress(CoreProgressManager.java:635)
	at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:603)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:61)
	at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:173)
	at com.intellij.openapi.progress.ProgressManager.runProcess(ProgressManager.java:71)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runWithWriteActionPriority(ProgressIndicatorUtils.java:111)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runInReadActionWithWriteActionPriority(ProgressIndicatorUtils.java:76)
	at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.attemptComputation(NonBlockingReadActionImpl.java:565)
	at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.lambda$transferToBgThread$1(NonBlockingReadActionImpl.java:466)
	at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.lambda$transferToBgThread$2(NonBlockingReadActionImpl.java:481)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:702)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:699)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:699)
	at java.base/java.lang.Thread.run(Thread.java:833)

IDEA version :