Stop depending of visiting LocalVariableElement(s) in Executableelement.visitChildren().

pkg/analysis_server/lib/src/services/correction/util.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.
 
 import 'dart:math';
 
 import 'package:analysis_server/src/protocol_server.dart'
     show doSourceChange_addElementEdit;
 import 'package:analysis_server/src/services/correction/strings.dart';
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 200 matching lines @@
     }
     if (typeName == "String") {
       return "''";
     }
   }
   // no better guess
   return "null";
 }
 
 /**
+ * Return all [LocalElement]s defined in the given [node].
+ */
+List<LocalElement> getDefinedLocalElements(AstNode node) {
+  var collector = new _LocalElementsCollector();
+  node.accept(collector);
+  return collector.elements;
+}
+
+/**
  * Return the name of the [Element] kind.
  */
 String getElementKindName(Element element) {
   return element.kind.displayName;
 }
 
 /**
  * Returns the name to display in the UI for the given [Element].
  */
 String getElementQualifiedName(Element element) {
@@ skipping 1299 matching lines @@
       _InvertedCondition expr, int newOperatorPrecedence) {
     if (expr._precedence < newOperatorPrecedence) {
       return "(${expr._source})";
     }
     return expr._source;
   }
 
   static _InvertedCondition _simple(String source) =>
       new _InvertedCondition(2147483647, source);
 }
+
+/**
+ * Visitor that collects defined [LocalElement]s.
+ */
+class _LocalElementsCollector extends RecursiveAstVisitor {
+  final elements = <LocalElement>[];
+
+  @override
+  visitSimpleIdentifier(SimpleIdentifier node) {
+    if (node.inDeclarationContext()) {
+      Element element = node.staticElement;
+      if (element is LocalElement) {
+        elements.add(element);
+      }
+    }
+  }
+}