NullPointerException occurs multiple times

[stavstrom]

version: 0.12.191.8026. Stacktrace:

java.lang.NullPointerException
at com.millennialmedia.intellibot.psi.ref.RobotFileManager.findFile(RobotFileManager.java:197)
at com.millennialmedia.intellibot.psi.ref.RobotFileManager.findGlobalFile(RobotFileManager.java:173)
at com.millennialmedia.intellibot.psi.ref.RobotFileManager.findRobot(RobotFileManager.java:61)
at com.millennialmedia.intellibot.psi.ref.RobotArgumentReference.resolveResource(RobotArgumentReference.java:69)
at com.millennialmedia.intellibot.psi.ref.RobotArgumentReference.resolve(RobotArgumentReference.java:35)
at com.millennialmedia.intellibot.psi.element.HeadingImpl.resolveImport(HeadingImpl.java:531)
at com.millennialmedia.intellibot.psi.element.HeadingImpl.collectImportFiles(HeadingImpl.java:357)
at com.millennialmedia.intellibot.psi.element.HeadingImpl.getImportedFiles(HeadingImpl.java:339)
at com.millennialmedia.intellibot.psi.element.RobotFileImpl.getImportedFiles(RobotFileImpl.java:141)
at com.millennialmedia.intellibot.psi.ref.ResolverUtils.resolveKeywordFromFile(ResolverUtils.java:46)
at com.millennialmedia.intellibot.psi.ref.RobotKeywordReference.resolve(RobotKeywordReference.java:31)
at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.resolves(PsiMultiReference.java:51)
at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.lambda$static$0(PsiMultiReference.java:35)
at java.base/java.util.TimSort.countRunAndMakeAscending(TimSort.java:355)
at java.base/java.util.TimSort.sort(TimSort.java:220)
at java.base/java.util.Arrays.sort(Arrays.java:1441)
at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.chooseReference(PsiMultiReference.java:70)
at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.getRangeInElement(PsiMultiReference.java:88)
at com.intellij.psi.ReferenceRange.getRanges(ReferenceRange.java:20)
at com.intellij.codeInsight.completion.CompletionUtil.findReferencePrefix(CompletionUtil.java:162)
at com.intellij.codeInsight.completion.CompletionData.getReferencePrefix(CompletionData.java:132)
at com.intellij.codeInsight.completion.CompletionData.findPrefixStatic(CompletionData.java:146)
at com.intellij.codeInsight.completion.CompletionData.findPrefixStatic(CompletionData.java:161)
at com.intellij.codeInsight.completion.BaseCompletionService.suggestPrefix(BaseCompletionService.java:64)
at com.intellij.codeInsight.completion.CompletionService.performCompletion(CompletionService.java:132)
at com.intellij.codeInsight.completion.BaseCompletionService.performCompletion(BaseCompletionService.java:41)
at com.intellij.codeInsight.completion.CompletionProgressIndicator.lambda$calculateItems$12(CompletionProgressIndicator.java:863)
at com.intellij.util.indexing.FileBasedIndex.lambda$ignoreDumbMode$0(FileBasedIndex.java:163)
at com.intellij.openapi.util.RecursionManager$1.computePreventingRecursion(RecursionManager.java:111)
at com.intellij.util.indexing.FileBasedIndexEx.ignoreDumbMode(FileBasedIndexEx.java:574)
at com.intellij.util.indexing.FileBasedIndex.ignoreDumbMode(FileBasedIndex.java:162)
at com.intellij.util.indexing.DumbModeAccessType.ignoreDumbMode(DumbModeAccessType.java:43)
at com.intellij.codeInsight.completion.CompletionProgressIndicator.calculateItems(CompletionProgressIndicator.java:859)
at com.intellij.codeInsight.completion.CompletionProgressIndicator.runContributors(CompletionProgressIndicator.java:847)
at com.intellij.codeInsight.completion.CodeCompletionHandlerBase.lambda$startContributorThread$6(CodeCompletionHandlerBase.java:353)
at com.intellij.codeInsight.completion.AsyncCompletion.lambda$tryReadOrCancel$5(CompletionThreading.java:172)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1096)
at com.intellij.codeInsight.completion.AsyncCompletion.tryReadOrCancel(CompletionThreading.java:170)
at com.intellij.codeInsight.completion.CodeCompletionHandlerBase.lambda$startContributorThread$7(CodeCompletionHandlerBase.java:345)
at com.intellij.codeInsight.completion.AsyncCompletion.lambda$startThread$0(CompletionThreading.java:95)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:178)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:688)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:634)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:64)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:165)
at com.intellij.codeInsight.completion.AsyncCompletion.lambda$startThread$1(CompletionThreading.java:91)
at com.intellij.util.RunnableCallable.call(RunnableCallable.java:20)
at com.intellij.util.RunnableCallable.call(RunnableCallable.java:11)
at com.intellij.openapi.application.impl.ApplicationImpl$1.call(ApplicationImpl.java:265)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:668)
at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:665)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:665)
at java.base/java.lang.Thread.run(Thread.java:829)

[lte2000]

The statement trigger the exception is:
VirtualFile workingDir = originalElement.getContainingFile().getVirtualFile().getParent();
I suspect originalElement.getContainingFile().getVirtualFile() return null, but can't image under which condition it will return null.

@stavstrom
Do the issue always happen even after restart Pycharm? If so, I can build a patch for you.

[stavstrom]

I can't find any reliable way of recreating this behavior. But yes, I've seen it many times, even after restarting PyCharm.

[lte2000]

@stavstrom
Please try the attached patch 0.12.191.8026.1.
intellibot.zip

[stavstrom]

Thank you :-) We're a few test developers at a Swedish company that are very thankful for your contribution to this plugin

[stavstrom]

Btw, the patch seem to work. I haven't seen this exception for a long time.

[lte2000]

@stavstrom Thanks for the feedback. I will merge the code into main branch later.

[KotlinIsland]

@stavstrom @ite2000 If this resolves the problem, this issue could be closed as completed.

[stavstrom]

It does solve the problem, so you can close this ticket. Good work and thank you. :-)