Serialize prefix members.

pkg/compiler/lib/src/serialization/modelz.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.
 
 /// Implementation of the element model used for deserialiation.
 ///
 /// These classes are created by [ElementDeserializer] triggered by the
 /// [Deserializer].
 
 library dart2js.serialization.modelz;
@@ skipping 218 matching lines @@
 /// before query.
 class ListedContainer {
   final Map<String, Element> _lookupMap = <String, Element>{};
 
   ListedContainer(List<Element> elements) {
     Set<String> accessorNames = new Set<String>();
     Map<String, Element> getters = <String, Element>{};
     Map<String, Element> setters = <String, Element>{};
     for (Element element in elements) {
       String name = element.name;
-      if (element.isGetter) {
+      if (element.isDeferredLoaderGetter) {
+        // Store directly.
+        // TODO(johnniwinther): Should modelx be normalized to put `loadLibrary`
+        // in an [AbstractFieldElement] instead?
+        _lookupMap[name] = element;
+      } else if (element.isGetter) {
         accessorNames.add(name);
         getters[name] = element;
         // Inserting [element] here to ensure insert order of [name].
         _lookupMap[name] = element;
       } else if (element.isSetter) {
         accessorNames.add(name);
         setters[name] = element;
         // Inserting [element] here to ensure insert order of [name].
         _lookupMap[name] = element;
       } else {
@@ skipping 2023 matching lines @@
 
   String toString() => 'Z$kind($uri)';
 }
 
 class PrefixElementZ extends DeserializedElementZ
     with LibraryMemberMixin
     implements PrefixElement {
   bool _isDeferred;
   ImportElement _deferredImport;
   GetterElement _loadLibrary;
+  ListedContainer _members;
 
   PrefixElementZ(ObjectDecoder decoder) : super(decoder);
 
   @override
   accept(ElementVisitor visitor, arg) => visitor.visitPrefixElement(this, arg);
 
   @override
   bool get isTopLevel => false;
 
   void _ensureDeferred() {
@@ skipping 19 matching lines @@
   }
 
   @override
   GetterElement get loadLibrary {
     return _loadLibrary;
   }
 
   @override
   ElementKind get kind => ElementKind.PREFIX;
 
+  void _ensureMembers() {
+    if (_members == null) {
+      _members = new ListedContainer(
+          _decoder.getElements(Key.MEMBERS, isOptional: true));
+    }
+  }
+
   @override
   Element lookupLocalMember(String memberName) {
-    return _unsupported('lookupLocalMember');
+    _ensureMembers();
+    return _members.lookup(memberName);
+  }
+
+  @override
+  void forEachLocalMember(void f(Element member)) {
+    _ensureMembers();
+    _members.forEach(f);
   }
 }
 
 class MetadataAnnotationZ implements MetadataAnnotation {
   final Element annotatedElement;
   final SourceSpan sourcePosition;
   final ConstantExpression constant;
 
   MetadataAnnotationZ(
       this.annotatedElement, this.sourcePosition, this.constant);
 
   @override
   MetadataAnnotation ensureResolved(Resolution resolution) {
     // Do nothing.
   }
 
   @override
   Node get node => throw new UnsupportedError('${this}.node');
 
   @override
   bool get hasNode => false;
 
   String toString() => 'MetadataAnnotationZ(${constant.toDartText()})';
 }