Add _embedder.yaml support to analyzer and analysis_server

pkg/analyzer/lib/src/context/context.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.context.context;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:analyzer/instrumentation/instrumentation.dart';
 import 'package:analyzer/plugin/task.dart';
+import 'package:analyzer/source/embedder.dart';
 import 'package:analyzer/src/cancelable_future.dart';
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/constant.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart'
     hide
         AnalysisCache,
         CachePartition,
         SdkCachePartition,
@@ skipping 52 matching lines @@
    * A client-provided name used to identify this context, or `null` if the
    * client has not provided a name.
    */
   String name;
 
   /**
    * The set of analysis options controlling the behavior of this context.
    */
   AnalysisOptionsImpl _options = new AnalysisOptionsImpl();
 
+  /// The embedder yaml locator for this context.
+  EmbedderYamlLocator _embedderYamlLocator = new EmbedderYamlLocator(null);
+
   /**
    * A flag indicating whether this context is disposed.
    */
   bool _disposed = false;
 
   /**
    * A cache of content used to override the default content of a source.
    */
   ContentCache _contentCache = new ContentCache();
 
@@ skipping 151 matching lines @@
         new StreamController<ImplicitAnalysisEvent>.broadcast();
   }
 
   @override
   AnalysisCache get analysisCache => _cache;
 
   @override
   AnalysisOptions get analysisOptions => _options;
 
   @override
+  EmbedderYamlLocator get embedderYamlLocator => _embedderYamlLocator;
+
+  @override
   void set analysisOptions(AnalysisOptions options) {
     bool needsRecompute = this._options.analyzeFunctionBodiesPredicate !=
             options.analyzeFunctionBodiesPredicate ||
         this._options.generateImplicitErrors !=
             options.generateImplicitErrors ||
         this._options.generateSdkErrors != options.generateSdkErrors ||
         this._options.dart2jsHint != options.dart2jsHint ||
         (this._options.hint && !options.hint) ||
         (this._options.lint && !options.lint) ||
         this._options.preserveComments != options.preserveComments ||
@@ skipping 1876 matching lines @@
     DartSdk sdk = factory.dartSdk;
     if (sdk == null) {
       throw new IllegalArgumentException(
           "The source factory for an SDK analysis context must have a DartUriResolver");
     }
     return new AnalysisCache(<CachePartition>[
       AnalysisEngine.instance.partitionManager_new.forSdk(sdk)
     ]);
   }
 }