AS strong-mode .analysis_options awareness.

pkg/analysis_server/lib/src/context_manager.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.
 
 library context.directory.manager;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:convert';
 import 'dart:core' hide Resource;
@@ skipping 466 matching lines @@
         (OptionsProcessor p) => p.optionsProcessed(info.context, options));
 
     // Analysis options are processed 'in-line'.
     // TODO(pq): consider pushing exclude handling into a plugin.
     YamlMap analyzer = options['analyzer'];
     if (analyzer == null) {
       // No options for analyzer.
       return;
     }
 
+    // Set strong mode.
+    var strongMode = analyzer['strong-mode'];
+    if (strongMode == true) {
+      AnalysisContext context = info.context;
+      AnalysisOptionsImpl options =
+          new AnalysisOptionsImpl.from(context.analysisOptions);
+      options.strongMode = true;
+      context.analysisOptions = options;
+    }
+
     // Set ignore patterns.
     YamlList exclude = analyzer['exclude'];
     if (exclude != null) {
       setIgnorePatternsForContext(info, exclude);
     }
   }
 
   @override
   void refresh(List<Resource> roots) {
     // Destroy old contexts
@@ skipping 935 matching lines @@
           var path = resourceProvider.pathContext.fromUri(uri);
           packageMap[name] = <Folder>[resourceProvider.getFolder(path)];
         }
       });
       return <UriResolver>[new SdkExtUriResolver(packageMap)];
     } else {
       return const <UriResolver>[];
     }
   }
 }