Index: mojo/public/dart/third_party/barback/lib/src/transformer/lazy_transformer.dart |
diff --git a/mojo/public/dart/third_party/barback/lib/src/transformer/lazy_transformer.dart b/mojo/public/dart/third_party/barback/lib/src/transformer/lazy_transformer.dart |
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+// 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 barback.transformer.lazy_transformer; |
+ |
+import 'declaring_transformer.dart'; |
+ |
+/// An interface for [Transformer]s that indicates that the transformer's |
+/// outputs shouldn't be generated until requested. |
+/// |
+/// The [declareOutputs] method is used to figure out which assets should be |
+/// treated as "lazy." Lazy assets will only be forced to be generated if |
+/// they're requested by the user or if they're used by a non-declaring |
+/// transformer. |
+abstract class LazyTransformer extends DeclaringTransformer {} |