From af82fb8e9566767fa9b3034b2a585c10638db0d0 Mon Sep 17 00:00:00 2001
From: Anna Kozlova <anna.kozlova@jetbrains.com>
Date: Fri, 16 Jun 2017 13:46:22 +0300
Subject: [PATCH] null checks (IDEA-CR-21943)

---
 .../MoveDirectoryWithClassesProcessor.java                    | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/platform/lang-impl/src/com/intellij/refactoring/move/moveClassesOrPackages/MoveDirectoryWithClassesProcessor.java b/platform/lang-impl/src/com/intellij/refactoring/move/moveClassesOrPackages/MoveDirectoryWithClassesProcessor.java
index 0992907dd463..12d6799679df 100644
--- a/platform/lang-impl/src/com/intellij/refactoring/move/moveClassesOrPackages/MoveDirectoryWithClassesProcessor.java
+++ b/platform/lang-impl/src/com/intellij/refactoring/move/moveClassesOrPackages/MoveDirectoryWithClassesProcessor.java
@@ -102,7 +102,7 @@ public class MoveDirectoryWithClassesProcessor extends BaseRefactoringProcessor
   }
 
   private Set<PsiFile> getPsiFiles() {
-    return myFilesToMove.keySet().stream().map(myManager::findFile).collect(Collectors.toSet());
+    return myFilesToMove.keySet().stream().map(myManager::findFile).filter(Objects::nonNull).collect(Collectors.toSet());
   }
 
   protected String getTargetName() {
@@ -124,6 +124,7 @@ public class MoveDirectoryWithClassesProcessor extends BaseRefactoringProcessor
     final MultiMap<PsiElement, String> conflicts = new MultiMap<>();
     for (VirtualFile vFile : myFilesToMove.keySet()) {
       PsiFile file = myManager.findFile(vFile);
+      if (file == null) continue;
       try {
         myFilesToMove.get(vFile).checkMove(file);
       }
@@ -163,6 +164,7 @@ public class MoveDirectoryWithClassesProcessor extends BaseRefactoringProcessor
       final Map<PsiElement, PsiElement> oldToNewElementsMapping = new HashMap<>();
       for (VirtualFile virtualFile : myFilesToMove.keySet()) {
         PsiFile file = myManager.findFile(virtualFile);
+        if (file == null) continue;
         for (MoveDirectoryWithClassesHelper helper : MoveDirectoryWithClassesHelper.findAll()) {
           helper.beforeMove(file);
         }