Report an error when a part-of refers to an unnamed library.

pkg/analyzer/lib/error/error.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analyzer.error.error;
 
 import 'dart:collection';
 
 import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/src/dart/scanner/scanner.dart' show ScannerErrorCode;
@@ skipping 567 matching lines @@
   StaticWarningCode.NON_ABSTRACT_CLASS_INHERITS_ABSTRACT_MEMBER_FOUR,
   StaticWarningCode.NON_ABSTRACT_CLASS_INHERITS_ABSTRACT_MEMBER_ONE,
   StaticWarningCode.NON_ABSTRACT_CLASS_INHERITS_ABSTRACT_MEMBER_THREE,
   StaticWarningCode.NON_ABSTRACT_CLASS_INHERITS_ABSTRACT_MEMBER_TWO,
   StaticWarningCode.NON_TYPE_IN_CATCH_CLAUSE,
   StaticWarningCode.NON_VOID_RETURN_FOR_OPERATOR,
   StaticWarningCode.NON_VOID_RETURN_FOR_SETTER,
   StaticWarningCode.NOT_A_TYPE,
   StaticWarningCode.NOT_ENOUGH_REQUIRED_ARGUMENTS,
   StaticWarningCode.PART_OF_DIFFERENT_LIBRARY,
+  StaticWarningCode.PART_OF_UNNAMED_LIBRARY,
   StaticWarningCode.REDIRECT_TO_INVALID_FUNCTION_TYPE,
   StaticWarningCode.REDIRECT_TO_INVALID_RETURN_TYPE,
   StaticWarningCode.REDIRECT_TO_MISSING_CONSTRUCTOR,
   StaticWarningCode.REDIRECT_TO_NON_CLASS,
   StaticWarningCode.RETURN_WITHOUT_VALUE,
   StaticWarningCode.STATIC_ACCESS_TO_INSTANCE_MEMBER,
   StaticWarningCode.SWITCH_EXPRESSION_NOT_ASSIGNABLE,
   StaticWarningCode.TYPE_ANNOTATION_DEFERRED_CLASS,
   StaticWarningCode.TYPE_ANNOTATION_GENERIC_FUNCTION_PARAMETER,
   StaticWarningCode.TYPE_PARAMETER_REFERENCED_BY_STATIC,
@@ skipping 246 matching lines @@
    * a single list of errors.
    */
   static List<AnalysisError> mergeLists(List<List<AnalysisError>> errorLists) {
     Set<AnalysisError> errors = new HashSet<AnalysisError>();
     for (List<AnalysisError> errorList in errorLists) {
       errors.addAll(errorList);
     }
     return errors.toList();
   }
 }