New analyzer snapshot.

pkg/analyzer/lib/src/generated/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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.error;
 
 import 'dart:collection';
@@ skipping 2118 matching lines @@
    * display name.
    *
    * @param arguments the arguments being tested
    * @return `true` if the array of arguments contains two or more types with the same display
    *         name
    */
   bool _hasEqualTypeNames(List<Object> arguments) {
     int count = arguments.length;
     HashSet<String> typeNames = new HashSet<String>();
     for (int i = 0; i < count; i++) {
-      if (arguments[i] is DartType && typeNames.add((arguments[i] as DartType).displayName)) {
+      if (arguments[i] is DartType && !typeNames.add((arguments[i] as DartType).displayName)) {
         return true;
       }
     }
     return false;
   }
 }
 
 /**
  * Instances of the enumeration `ErrorSeverity` represent the severity of an [ErrorCode]
  * .
@@ skipping 1899 matching lines @@
 
   @override
   String get message => "%s";
 
   @override
   ErrorType get type => ErrorType.TODO;
 
   @override
   String get uniqueName => "${runtimeType.toString()}.${name}";
 }