Support per-library serialization.

pkg/compiler/lib/src/serialization/element_serialization.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 dart2js.serialization.elements;
 
 import '../common.dart';
 import '../constants/constructors.dart';
 import '../constants/expressions.dart';
 import '../dart_types.dart';
@@ skipping 25 matching lines @@
   INSTANCE_GETTER,
   INSTANCE_SETTER,
   LOCAL_FUNCTION,
   TYPEDEF,
   TYPEVARIABLE,
   PARAMETER,
   INITIALIZING_FORMAL,
   IMPORT,
   EXPORT,
   PREFIX,
+  EXTERNAL_LIBRARY,
+  EXTERNAL_LIBRARY_MEMBER,
+  EXTERNAL_STATIC_MEMBER,
+  EXTERNAL_CONSTRUCTOR,
 }
 
 /// Set of serializers used to serialize different kinds of elements by
 /// encoding into them into [ObjectEncoder]s.
 ///
 /// This class is called from the [Serializer] when an [Element] needs
 /// serialization. The [ObjectEncoder] ensures that any [Element], [DartType],
 /// and [ConstantExpression] that the serialized [Element] depends upon are also
 /// serialized.
 const List<ElementSerializer> ELEMENT_SERIALIZERS = const [
@@ skipping 530 matching lines @@
 ///
 /// This is used by the [Deserializer].
 class ElementDeserializer {
 
   /// Deserializes an [Element] from an [ObjectDecoder].
   ///
   /// The class is called from the [Deserializer] when an [Element]
   /// needs deserialization. The [ObjectDecoder] ensures that any [Element],
   /// [DartType], and [ConstantExpression] that the deserialized [Element]
   /// depends upon are available.
-  static Element deserialize(ObjectDecoder decoder) {
-    SerializedElementKind elementKind =
-        decoder.getEnum(Key.KIND, SerializedElementKind.values);
+  static Element deserialize(
+      ObjectDecoder decoder,
+      SerializedElementKind elementKind) {
     switch (elementKind) {
       case SerializedElementKind.LIBRARY:
         return new LibraryElementZ(decoder);
       case SerializedElementKind.COMPILATION_UNIT:
         return new CompilationUnitElementZ(decoder);
       case SerializedElementKind.CLASS:
         return new ClassElementZ(decoder);
       case SerializedElementKind.ENUM:
         return new EnumClassElementZ(decoder);
       case SerializedElementKind.NAMED_MIXIN_APPLICATION:
@@ skipping 35 matching lines @@
       case SerializedElementKind.PARAMETER:
         return new ParameterElementZ(decoder);
       case SerializedElementKind.INITIALIZING_FORMAL:
         return new InitializingFormalElementZ(decoder);
       case SerializedElementKind.IMPORT:
         return new ImportElementZ(decoder);
       case SerializedElementKind.EXPORT:
         return new ExportElementZ(decoder);
       case SerializedElementKind.PREFIX:
         return new PrefixElementZ(decoder);
+      case SerializedElementKind.EXTERNAL_LIBRARY:
+      case SerializedElementKind.EXTERNAL_LIBRARY_MEMBER:
+      case SerializedElementKind.EXTERNAL_STATIC_MEMBER:
+      case SerializedElementKind.EXTERNAL_CONSTRUCTOR:
+        break;
     }
     throw new UnsupportedError("Unexpected element kind '${elementKind}.");
   }
 }