Add support for accessing field formal parameters in the initializer list of constructors

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 30 matching lines @@
 void configureContextOptions(
         AnalysisContext context, Map<String, Object> options) =>
     _processor.configure(context, options);
 
 /// `analyzer` analysis options constants.
 class AnalyzerOptions {
   static const String analyzer = 'analyzer';
   static const String enableAssertInitializer = 'enableAssertInitializer';
   static const String enableAsync = 'enableAsync';
   static const String enableGenericMethods = 'enableGenericMethods';
+  static const String enableInitializingFormalAccess =
+      'enableInitializingFormalAccess';
   static const String enableStrictCallChecks = 'enableStrictCallChecks';
   static const String enableSuperMixins = 'enableSuperMixins';
 
   static const String errors = 'errors';
   static const String exclude = 'exclude';
   static const String language = 'language';
   static const String plugins = 'plugins';
   static const String strong_mode = 'strong-mode';
 
   // Strong mode options, see AnalysisOptionsImpl for documentation.
@@ skipping 498 matching lines @@
   }
 
   void _applyLanguageOption(
       AnalysisOptionsImpl options, Object feature, Object value) {
     bool boolValue = toBool(value);
     if (boolValue != null) {
       if (feature == AnalyzerOptions.enableAssertInitializer) {
         options.enableAssertInitializer = boolValue;
       } else if (feature == AnalyzerOptions.enableAsync) {
         options.enableAsync = boolValue;
+      } else if (feature == AnalyzerOptions.enableInitializingFormalAccess) {
+        options.enableInitializingFormalAccess = boolValue;
       } else if (feature == AnalyzerOptions.enableSuperMixins) {
         options.enableSuperMixins = boolValue;
       } else if (feature == AnalyzerOptions.enableGenericMethods) {
         options.enableGenericMethods = boolValue;
       }
     }
   }
 
   void _applyLanguageOptions(AnalysisOptionsImpl options, Object configs) {
     if (configs is YamlMap) {
@@ skipping 31 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;
     }
   }
 }