Change when enum constant elements are created to fix bug in re-creating ASTs from existing element…

pkg/analyzer/lib/src/generated/resolver.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.
 
 library analyzer.src.generated.resolver;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 3390 matching lines @@
     fields.add(valuesField);
     getters.add(_createGetter(valuesField));
     //
     // Build the enum constants.
     //
     NodeList<EnumConstantDeclaration> constants = node.constants;
     List<DartObjectImpl> constantValues = new List<DartObjectImpl>();
     int constantCount = constants.length;
     for (int i = 0; i < constantCount; i++) {
       EnumConstantDeclaration constant = constants[i];
-      SimpleIdentifier constantName = constant.name;
-      FieldElementImpl constantField =
-          new ConstFieldElementImpl.forNode(constantName);
-      constantField.static = true;
-      constantField.const3 = true;
-      constantField.type = enumType;
-      setElementDocumentationComment(constantField, constant);
+      FieldElementImpl constantField = constant.name.staticElement;
       //
       // Create a value for the constant.
       //
       HashMap<String, DartObjectImpl> fieldMap =
           new HashMap<String, DartObjectImpl>();
       fieldMap[indexFieldName] = new DartObjectImpl(intType, new IntState(i));
       DartObjectImpl value =
           new DartObjectImpl(enumType, new GenericState(fieldMap));
       constantValues.add(value);
       constantField.evaluationResult = new EvaluationResultImpl(value);
       fields.add(constantField);
-      getters.add(_createGetter(constantField));
-      constantName.staticElement = constantField;
+      getters.add(constantField.getter);
     }
     //
     // Build the value of the 'values' field.
     //
     valuesField.evaluationResult = new EvaluationResultImpl(
         new DartObjectImpl(valuesField.type, new ListState(constantValues)));
     //
     // Finish building the enum.
     //
     enumElement.fields = fields;
@@ skipping 9535 matching lines @@
     nonFields.add(node);
     return null;
   }
 
   @override
   Object visitNode(AstNode node) => node.accept(TypeResolverVisitor_this);
 
   @override
   Object visitWithClause(WithClause node) => null;
 }