flatten Keyword into TokenType

pkg/analysis_server/lib/src/services/completion/dart/completion_manager.dart

 // Copyright (c) 2015, 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 services.completion.dart.manager;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/ide_options.dart';
@@ skipping 490 matching lines @@
  * Utility class for computing the code completion replacement range
  */
 class ReplacementRange {
   int offset;
   int length;
 
   ReplacementRange(this.offset, this.length);
 
   factory ReplacementRange.compute(int requestOffset, CompletionTarget target) {
     bool isKeywordOrIdentifier(Token token) =>
-        token.type == TokenType.KEYWORD || token.type == TokenType.IDENTIFIER;
+        token.type.isKeyword || token.type == TokenType.IDENTIFIER;
 
     //TODO(danrubel) Ideally this needs to be pushed down into the contributors
     // but that implies that each suggestion can have a different
     // replacement offsent/length which would mean an API change
 
     var entity = target.entity;
     Token token = entity is AstNode ? entity.beginToken : entity;
     if (token != null && requestOffset < token.offset) {
       token = token.previous;
     }
@@ skipping 22 matching lines @@
           if (start <= requestOffset && requestOffset <= end) {
             // Replacement range for import URI
             return new ReplacementRange(start, end - start);
           }
         }
       }
     }
     return new ReplacementRange(requestOffset, 0);
   }
 }