EA-53845 fixed NPE.

ProjectRootManager obviously cannot be obtained if delegate.getProject() == null.
Some @NotNull & @Nullable added in relative places

java/java-indexing-impl/src/com/intellij/psi/impl/search/JavaSourceFilterScope.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2013 JetBrains s.r.o.
+ * Copyright 2000-2014 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -30,13 +30,18 @@ import com.intellij.psi.SdkResolveScopeProvider;
 import com.intellij.psi.search.DelegatingGlobalSearchScope;
 import com.intellij.psi.search.GlobalSearchScope;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 public class JavaSourceFilterScope extends DelegatingGlobalSearchScope {
+  @Nullable
   private final ProjectFileIndex myIndex;
 
   public JavaSourceFilterScope(@NotNull final GlobalSearchScope delegate) {
     super(delegate);
-    myIndex = ProjectRootManager.getInstance(getProject()).getFileIndex();
+
+    Project project = getProject();
+    myIndex = project != null ? ProjectRootManager.getInstance(project).getFileIndex()
+                              : null;
   }
 
   @Override
@@ -45,6 +50,10 @@ public class JavaSourceFilterScope extends DelegatingGlobalSearchScope {
       return false;
     }
 
+    if (myIndex == null) {
+      return false;
+    }
+
     if (JavaClassFileType.INSTANCE == file.getFileType()) {
       return myIndex.isInLibraryClasses(file);
     }

platform/core-api/src/com/intellij/psi/search/GlobalSearchScope.java

@@ -39,7 +39,7 @@ public abstract class GlobalSearchScope extends SearchScope implements ProjectAw
   private static final Logger LOG = Logger.getInstance("#com.intellij.psi.search.GlobalSearchScope");
   @Nullable private final Project myProject;
 
-  protected GlobalSearchScope(Project project) {
+  protected GlobalSearchScope(@Nullable Project project) {
     myProject = project;
   }
 
@@ -49,6 +49,7 @@ public abstract class GlobalSearchScope extends SearchScope implements ProjectAw
 
   public abstract boolean contains(@NotNull VirtualFile file);
 
+  @Nullable
   @Override
   public Project getProject() {
     return myProject;

platform/projectModel-api/src/com/intellij/openapi/roots/ProjectRootManager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2012 JetBrains s.r.o.
+ * Copyright 2000-2014 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -39,7 +39,7 @@ public abstract class ProjectRootManager implements ModificationTracker {
    * @param project the project for which the instance is requested.
    * @return the instance.
    */
-  public static ProjectRootManager getInstance(Project project) {
+  public static ProjectRootManager getInstance(@NotNull Project project) {
     final ProjectRootManager service = ServiceManager.getService(project, ProjectRootManager.class);
     if (service != null) return service;
     return project.getComponent(ProjectRootManager.class);