Move scanner into pkg/front_end/lib/src/scanner.

pkg/analyzer/lib/src/task/options.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 analyzer.src.task.options;
 
 import 'dart:collection';
 
 import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/plugin/options.dart';
@@ skipping 155 matching lines @@
       StringUtilities.printListOfQuotedNames(legalValues);
 
   /// Lazily populated set of error codes (hashed for speedy lookup).
   static HashSet<String> _errorCodes;
 
   /// Legal error code names.
   static Set<String> get errorCodes {
     if (_errorCodes == null) {
       _errorCodes = new HashSet<String>();
       // Engine codes.
-      _errorCodes.addAll(ErrorCode.values.map((ErrorCode code) => code.name));
+      _errorCodes.addAll(errorCodeValues.map((ErrorCode code) => code.name));
     }
     return _errorCodes;
   }
 
   @override
   void validate(ErrorReporter reporter, Map<String, YamlNode> options) {
     var analyzer = options[AnalyzerOptions.analyzer];
     if (analyzer is YamlMap) {
       var filters = analyzer[AnalyzerOptions.errors];
       if (filters is YamlMap) {
@@ skipping 425 matching lines @@
         }
       });
     } else if (config is Map) {
       options.strongMode = true;
       config.forEach((k, v) => _applyStrongModeOption(options, k, v));
     } else {
       options.strongMode = config is bool ? config : false;
     }
   }
 }