Fix notifications for nested packages

pkg/analysis_server/lib/src/analysis_server.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 analysis.server;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:math' show max;
 
@@ skipping 350 matching lines @@
 
   /**
    * Return the preferred [AnalysisContext] for analyzing the given [path].
    * This will be the context that explicitly contains the path, if any such
    * context exists, otherwise it will be the first analysis context that
    * implicitly analyzes it.  Return `null` if no context is analyzing the
    * path.
    */
   AnalysisContext getAnalysisContext(String path) {
     // try to find a containing context
+    Folder containingFolder = null;
     for (Folder folder in folderMap.keys) {
       if (folder.path == path || folder.contains(path)) {
-        return folderMap[folder];
+        if (containingFolder == null) {
+          containingFolder = folder;
+        } else if (containingFolder.path.length < folder.path.length) {
+          containingFolder = folder;
+        }
       }
     }
+    if (containingFolder != null) {
+      return folderMap[containingFolder];
+    }
     Resource resource = resourceProvider.getResource(path);
     if (resource is Folder) {
       return null;
     }
     // check if there is a context that analyzed this source
     return getAnalysisContextForSource(getSource(path));
   }
 
   /**
    * Return any [AnalysisContext] that is analyzing the given [source], either
@@ skipping 892 matching lines @@
           new DateTime.now().millisecondsSinceEpoch -
           request.clientRequestTime;
       requestLatency += latency;
       maxLatency = max(maxLatency, latency);
       if (latency > 150) {
         ++slowRequestCount;
       }
     }
   }
 }