Change all sources associated with changed files (issue 22680)

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 'package:analysis_server/src/analysis_server.dart';
@@ skipping 448 matching lines @@
       ChangeSet changeSet = new ChangeSet();
       extractedSources.forEach((path, source) {
         oldInfo.sources.remove(path);
         changeSet.removedSource(source);
       });
       applyChangesToContext(oldInfo.folder, changeSet);
     }
   }
 
   void _handleWatchEvent(Folder folder, _ContextInfo info, WatchEvent event) {
+    // TODO(brianwilkerson) If a file is explicitly included in one context
+    // but implicitly referenced in another context, we will only send a
+    // changeSet to the context that explicitly includes the file (because
+    // that's the only context that's watching the file).
     _instrumentationService.logWatchEvent(
         folder.path, event.path, event.type.toString());
     String path = event.path;
     // maybe excluded globally
     if (_isExcluded(path)) {
       return;
     }
     // maybe excluded from the context, so other context will handle it
     if (info.excludes(path)) {
       return;
@@ skipping 23 matching lines @@
             info.sources[path] = source;
           }
         }
         break;
       case ChangeType.REMOVE:
         // pubspec was removed, merge the context into its parent
         if (info.isPubspec(path) && !info.isRoot) {
           _mergeContext(info);
           return;
         }
-        Source source = info.sources[path];
-        if (source != null) {
+        List<Source> sources = info.context.getSourcesWithFullName(path);
+        if (!sources.isEmpty) {
           ChangeSet changeSet = new ChangeSet();
-          changeSet.removedSource(source);
+          sources.forEach((Source source) {
+            changeSet.removedSource(source);
+          });
           applyChangesToContext(folder, changeSet);
           info.sources.remove(path);
         }
         break;
       case ChangeType.MODIFY:
-        Source source = info.sources[path];
-        if (source != null) {
+        List<Source> sources = info.context.getSourcesWithFullName(path);
+        if (!sources.isEmpty) {
           ChangeSet changeSet = new ChangeSet();
-          changeSet.changedSource(source);
+          sources.forEach((Source source) {
+            changeSet.changedSource(source);
+          });
           applyChangesToContext(folder, changeSet);
         }
         break;
     }
 
     if (info.packageMapDependencies.contains(path)) {
       _recomputePackageUriResolver(info);
     }
   }
 
@@ skipping 175 matching lines @@
     return excludes(resource.path);
   }
 
   /**
    * Returns `true` if [path] is the pubspec file of this context.
    */
   bool isPubspec(String path) {
     return path == pubspecPath;
   }
 }