@Nullable proximity context (EA-23391)

platform/lang-api/src/com/intellij/psi/util/ProximityLocation.java

@@ -32,7 +32,7 @@ public class ProximityLocation implements UserDataHolder {
   private final Module myPositionModule;
   private final ProcessingContext myContext;
 
-  public ProximityLocation(final PsiElement position, final Module positionModule) {
+  public ProximityLocation(@Nullable final PsiElement position, final Module positionModule) {
     this(position, positionModule, new ProcessingContext());
   }
 

platform/lang-impl/src/com/intellij/ide/util/gotoByName/ChooseByNameBase.java

@@ -1375,7 +1375,7 @@ public abstract class ChooseByNameBase {
     private final ChooseByNameModel myModel;
     private final PsiProximityComparator myProximityComparator;
 
-    private PathProximityComparator(final ChooseByNameModel model, final PsiElement context) {
+    private PathProximityComparator(final ChooseByNameModel model, @Nullable final PsiElement context) {
       myModel = model;
       myProximityComparator = new PsiProximityComparator(context);
     }

platform/lang-impl/src/com/intellij/psi/util/proximity/PsiProximityComparator.java

@@ -49,7 +49,7 @@ public class PsiProximityComparator implements Comparator<Object> {
   };
   private static final Key<Module> MODULE_BY_LOCATION = Key.create("ModuleByLocation");
 
-  public PsiProximityComparator(PsiElement context) {
+  public PsiProximityComparator(@Nullable PsiElement context) {
     myContext = context;
   }
 
@@ -68,6 +68,8 @@ public class PsiProximityComparator implements Comparator<Object> {
       return - proximity1.compareTo(proximity2);
     }
 
+    if (myContext == null) return 0;
+
     Module contextModule = ModuleUtil.findModuleForPsiElement(myContext);
     if (contextModule == null) return 0;