In constant evaluation, handle final vars initialized at declaration site.

pkg/analyzer/lib/src/generated/element.dart

 // Copyright (c) 2014, 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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.element;
 
 import 'dart:collection';
@@ skipping 1508 matching lines @@
     safelyVisitChildren(_accessors, visitor);
     safelyVisitChildren(_enums, visitor);
     safelyVisitChildren(_functions, visitor);
     safelyVisitChildren(_typeAliases, visitor);
     safelyVisitChildren(_types, visitor);
     safelyVisitChildren(_variables, visitor);
   }
 }
 
 /**
- * A [FieldElement] for a 'const' field that has an initializer.
+ * A [FieldElement] for a 'const' or 'final' field that has an initializer.
+ *
+ * TODO(paulberry): we should rename this class to reflect the fact that it's
+ * used for both const and final fields.  However, we shouldn't do so until
+ * we've created an API for reading the values of constants; until that API is
+ * available, clients are likely to read constant values by casting to
+ * ConstFieldElementImpl, so it would be a breaking change to rename this
+ * class.
  */
 class ConstFieldElementImpl extends FieldElementImpl with ConstVariableElement {
   /**
    * The result of evaluating this variable's initializer.
    */
   EvaluationResultImpl _result;
 
   /**
    * Initialize a newly created field element to have the given [name].
    */
@@ skipping 8787 matching lines @@
 
   @override
   void visitElement(Element element) {
     int offset = element.nameOffset;
     if (offset != -1) {
       map[offset] = element;
     }
     super.visitElement(element);
   }
 }