Support serialization of WorldImpact

pkg/compiler/lib/src/common/backend_api.dart

 // Copyright (c) 2012, 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 dart2js.backend_api;
 
 import 'dart:async' show Future;
 
 import '../common.dart';
 import '../common/codegen.dart' show
@@ skipping 37 matching lines @@
 import '../library_loader.dart' show
     LibraryLoader,
     LoadedLibraries;
 import '../native/native.dart' as native show
     NativeEnqueuer,
     maybeEnableNative;
 import '../patch_parser.dart' show
     checkNativeAnnotation, checkJsInteropAnnotation;
 import '../resolution/tree_elements.dart' show
     TreeElements;
+import '../serialization/serialization.dart' show
+    DeserializerPlugin,
+    ObjectDecoder,
+    ObjectEncoder,
+    SerializerPlugin;
 import '../tree/tree.dart' show
     Node,
     Send;
 import '../universe/call_structure.dart' show
     CallStructure;
 import '../universe/world_impact.dart' show
     ImpactStrategy,
     WorldImpact;
 
 import 'codegen.dart' show
@@ skipping 27 matching lines @@
   ConstantCompilerTask get constantCompilerTask;
 
   /// Backend transformation methods for the world impacts.
   ImpactTransformer get impactTransformer;
 
   /// The strategy used for collecting and emitting source information.
   SourceInformationStrategy get sourceInformationStrategy {
     return const SourceInformationStrategy();
   }
 
+  /// Interface for serialization of backend specific data.
+  BackendSerialization get serialization => const BackendSerialization();
+
   // TODO(johnniwinther): Move this to the JavaScriptBackend.
   String get patchVersion => null;
 
   /// Set of classes that need to be considered for reflection although not
   /// otherwise visible during resolution.
   Iterable<ClassElement> classesRequiredForReflection = const [];
 
   // Given a [FunctionElement], return a buffer with the code generated for it
   // or null if no code was generated.
   CodeBuffer codeOf(Element element) => null;
@@ skipping 308 matching lines @@
 
   /// Returns the location of the patch-file associated with [libraryName]
   /// resolved from [plaformConfigUri].
   ///
   /// Returns null if there is none.
   Uri resolvePatchUri(String libraryName, Uri plaformConfigUri);
 
   /// Creates an impact strategy to use for compilation.
   ImpactStrategy createImpactStrategy(
       {bool supportDeferredLoad: true,
-       bool supportDumpInfo: true}) {
+       bool supportDumpInfo: true,
+       bool supportSerialization: true}) {
     return const ImpactStrategy();
   }
 }
 
 /// Interface for resolving calls to foreign functions.
 abstract class ForeignResolver {
   /// Returns the constant expression of [node], or `null` if [node] is not
   /// a constant expression.
   ConstantExpression getConstant(Node node);
 
@@ skipping 11 matching lines @@
   WorldImpact transformResolutionImpact(ResolutionImpact worldImpact) {
     return worldImpact;
   }
 
   /// Transform the [CodegenImpact] into a [WorldImpact] adding the
   /// backend dependencies for features used in [worldImpact].
   WorldImpact transformCodegenImpact(CodegenImpact worldImpact) {
     return worldImpact;
   }
 }
+
+/// Interface for serialization of backend specific data.
+class BackendSerialization  {
+  const BackendSerialization();
+
+  SerializerPlugin get serializer => const SerializerPlugin();
+  DeserializerPlugin get deserializer => const DeserializerPlugin();
+}