Serialize TreeElements

pkg/compiler/lib/src/serialization/constant_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.constants;
 
 import '../constants/constructors.dart';
 import '../constants/expressions.dart';
 import '../dart_types.dart';
 import '../elements/elements.dart' show
@@ skipping 93 matching lines @@
   }
 
   @override
   void visitNull(NullConstantExpression exp, ObjectEncoder encoder) {
     // No additional data needed.
   }
 
   @override
   void visitSymbol(SymbolConstantExpression exp,
                    ObjectEncoder encoder) {
-    throw new UnsupportedError(
-        "ConstantSerializer.visitSymbol: ${exp.getText()}");
+    encoder.setString(Key.NAME, exp.name);
   }
 
   @override
   void visitType(TypeConstantExpression exp,
                  ObjectEncoder encoder) {
     encoder.setType(Key.TYPE, exp.type);
   }
 
   @override
   void visitUnary(UnaryConstantExpression exp,
@@ skipping 298 matching lines @@
       case ConstantConstructorKind.REDIRECTING_GENERATIVE:
         return new RedirectingGenerativeConstantConstructor(
             readDefaults(),
             readConstructorInvocation());
       case ConstantConstructorKind.REDIRECTING_FACTORY:
         return new RedirectingFactoryConstantConstructor(
             readConstructorInvocation());
     }
   }
 }