Make exclude list also exclude contexts

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 826 matching lines @@
     if (ENABLE_PACKAGESPEC_SUPPORT) {
       // Start by looking for .packages.
       packageSpec = folder.getChild(PACKAGE_SPEC_NAME);
     }
 
     // Fall back to looking for a pubspec.
     if (packageSpec == null || !packageSpec.exists) {
       packageSpec = folder.getChild(PUBSPEC_NAME);
     }
 
-    bool parentCreated = false;
-    if (packageSpec.exists || !withPackageSpecOnly) {
-      parentCreated = true;
+    bool createContext = packageSpec.exists || !withPackageSpecOnly;
+    if (withPackageSpecOnly && packageSpec.exists &&
+        (parent != null) && parent.ignored(packageSpec.path)) {
+      // Don't create a context if the package spec is required and ignored.
+      createContext = false;
+    }
+    if (createContext) {
       parent = _createContext(parent, folder, packageSpec);
     }
 
     // Try to find subfolders with pubspecs or .packages files.
     try {
       for (Resource child in folder.getChildren()) {
         if (child is Folder) {
-          _createContexts(parent, child, true);
+          if (!parent.ignored(child.path)) {
+            _createContexts(parent, child, true);
+          }
         }
       }
     } on FileSystemException {
       // The directory either doesn't exist or cannot be read. Either way, there
       // are no subfolders that need to be added.
     }
 
-    if (parentCreated) {
+    if (createContext) {
       // Now that the child contexts have been created, add the sources that
       // don't belong to the children.
       ChangeSet changeSet = new ChangeSet();
       _addSourceFiles(changeSet, folder, parent);
       callbacks.applyChangesToContext(folder, changeSet);
     }
   }
 
   /**
    * Clean up and destroy the context associated with the given folder.
@@ skipping 460 matching lines @@
 
   PackagesFileDisposition(this.packages) {}
 
   @override
   String get packageRoot => null;
 
   @override
   Iterable<UriResolver> createPackageUriResolvers(
       ResourceProvider resourceProvider) => const <UriResolver>[];
 }