Extract Local refactoring: skip method names in invocations.

pkg/analysis_server/lib/src/services/refactoring/extract_local.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 services.src.refactoring.extract_local;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:analysis_server/src/protocol_server.dart' hide Element;
@@ skipping 189 matching lines @@
     for (AstNode node = coveringNode; node is Expression; node = node.parent) {
       AstNode parent = node.parent;
       // cannot extract the name part of a property access
       if (parent is PrefixedIdentifier && parent.identifier == node ||
           parent is PropertyAccess && parent.propertyName == node) {
         continue;
       }
       // fatal selection problems
       if (coveringExpressionOffsets.isEmpty) {
         if (node is SimpleIdentifier) {
-          Element element = node.bestElement;
-          if (element is FunctionElement || element is MethodElement) {
-            return new RefactoringStatus.fatal(
-                'Cannot extract a single method name.',
-                newLocation_fromNode(node));
-          }
           if (node.inDeclarationContext()) {
             return new RefactoringStatus.fatal(
                 'Cannot extract the name part of a declaration.',
                 newLocation_fromNode(node));
           }
+          Element element = node.bestElement;
+          if (element is FunctionElement || element is MethodElement) {
+            continue;
+          }
         }
         if (parent is AssignmentExpression && parent.leftHandSide == node) {
           return new RefactoringStatus.fatal(
               'Cannot extract the left-hand side of an assignment.',
               newLocation_fromNode(node));
         }
       }
       // set selected expression
       if (coveringExpressionOffsets.isEmpty) {
         rootExpression = node;
@@ skipping 390 matching lines @@
 
   _TokenLocalElementVisitor(this.map);
 
   visitSimpleIdentifier(SimpleIdentifier node) {
     Element element = node.staticElement;
     if (element is LocalVariableElement) {
       map[node.token] = element;
     }
   }
 }