Add AnalysisCache.onResultInvalidated, use in DartWorkManager.

pkg/analyzer/lib/src/task/dart_work_manager.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.dart_work_manager;
 
 import 'dart:collection';
 
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/generated/engine.dart'
@@ skipping 65 matching lines @@
 
   /**
    * A table mapping part sources to the library sources that include them.
    */
   final HashMap<Source, List<Source>> partLibrariesMap =
       new HashMap<Source, List<Source>>();
 
   /**
    * Initialize a newly created manager.
    */
-  DartWorkManager(this.context);
+  DartWorkManager(this.context) {
+    analysisCache.onResultInvalidated.listen((InvalidatedResult event) {
+      if (event.descriptor == LIBRARY_ERRORS_READY) {
+        CacheEntry entry = event.entry;
+        if (entry.getValue(SOURCE_KIND) == SourceKind.LIBRARY) {
+          librarySourceQueue.add(entry.target);
+        }
+      }
+    });
+  }
 
   /**
    * Returns the correctly typed result of `context.analysisCache`.
    */
   AnalysisCache get analysisCache => context.analysisCache;
 
   /**
    * The partition that contains analysis results that are not shared with other
    * contexts.
    */
@@ skipping 24 matching lines @@
     librarySourceQueue.removeAll(changedSources);
     librarySourceQueue.removeAll(removedSources);
     // parts in libraries
     for (Source changedSource in changedSources) {
       _onLibrarySourceChangedOrRemoved(changedSource);
     }
     for (Source removedSource in removedSources) {
       partLibrariesMap.remove(removedSource);
       _onLibrarySourceChangedOrRemoved(removedSource);
     }
-    // Some of the libraries might have been invalidated, reschedule them.
-    {
-      MapIterator<AnalysisTarget, CacheEntry> iterator =
-          analysisCache.iterator();
-      while (iterator.moveNext()) {
-        AnalysisTarget target = iterator.key;
-        if (_isDartSource(target)) {
-          CacheEntry entry = iterator.value;
-          if (entry.getValue(SOURCE_KIND) == SourceKind.LIBRARY &&
-              entry.getValue(LIBRARY_ERRORS_READY) != true) {
-            librarySourceQueue.add(target);
-          }
-        }
-      }
-    }
   }
 
   @override
   void applyPriorityTargets(List<AnalysisTarget> targets) {
     // Unschedule the old targets.
     List<TargetedResult> resultsToUnschedule = <TargetedResult>[];
     for (TargetedResult result in priorityResultQueue) {
       if (result.result == LIBRARY_ERRORS_READY) {
         resultsToUnschedule.add(result);
       }
@@ skipping 288 matching lines @@
     }
   }
 
   bool _shouldErrorsBeComputed(Source source) =>
       context.shouldErrorsBeAnalyzed(source, null);
 
   static bool _isDartSource(AnalysisTarget target) {
     return target is Source && AnalysisEngine.isDartFileName(target.fullName);
   }
 }