Create a prelinker for summaries.

pkg/analyzer/lib/src/summary/summarize_elements.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 serialization.elements;
 
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/src/dart/element/type.dart';
 import 'package:analyzer/src/generated/resolver.dart';
@@ skipping 713 matching lines @@
 
   /**
    * Return the index of the entry in the references table
    * ([UnlinkedLibrary.references] and [PrelinkedLibrary.references]) used for
    * unresolved references.  A new entry is added to the table if necessary to
    * satisfy the request.
    */
   int serializeUnresolvedReference() {
     // TODO(paulberry): in order for relinking to work, we need to record the
     // name and prefix of the unresolved symbol.  This is not (yet) encoded in
-    // the element model.
+    // the element model.  For the moment we use a name that can't possibly
+    // ever exist.
     if (unresolvedReferenceIndex == null) {
       assert(unlinkedReferences.length == prelinkedReferences.length);
       unresolvedReferenceIndex = unlinkedReferences.length;
-      unlinkedReferences.add(encodeUnlinkedReference(ctx));
+      unlinkedReferences
+          .add(encodeUnlinkedReference(ctx, name: '*unresolved*'));
       prelinkedReferences.add(encodePrelinkedReference(ctx,
           kind: PrelinkedReferenceKind.unresolved));
     }
     return unresolvedReferenceIndex;
   }
 
   /**
    * Serialize the given [variable], creating an [UnlinkedVariable].
    */
   UnlinkedVariableBuilder serializeVariable(PropertyInducingElement variable) {
     UnlinkedVariableBuilder b = new UnlinkedVariableBuilder(ctx);
     b.name = variable.name;
     b.nameOffset = variable.nameOffset;
     b.type = serializeTypeRef(variable.type, variable);
     b.isStatic = variable.isStatic && variable.enclosingElement is ClassElement;
     b.isFinal = variable.isFinal;
     b.isConst = variable.isConst;
     b.hasImplicitType = variable.hasImplicitType;
     b.documentationComment = serializeDocumentation(variable);
     return b;
   }
 }