Support assignment of locals in analyzer2dart.

pkg/analyzer2dart/test/identifier_semantics_test.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 'package:unittest/unittest.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'mock_sdk.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/generated/source.dart';
@@ skipping 2101 matching lines @@
 typedef void AccessHandler(Expression node, AccessSemantics semantics);
 
 /**
  * Visitor class used to run the tests.
  */
 class TestVisitor extends RecursiveAstVisitor {
   AccessHandler onAccess;
 
   @override
   visitMethodInvocation(MethodInvocation node) {
-    onAccess(node, classifyMethodInvocation(node));
+    onAccess(node, node.accept(ACCESS_SEMANTICS_VISITOR));
   }
 
   @override
   visitPrefixedIdentifier(PrefixedIdentifier node) {
-    onAccess(node, classifyPrefixedIdentifier(node));
+    onAccess(node, node.accept(ACCESS_SEMANTICS_VISITOR));
   }
 
   @override
   visitPropertyAccess(PropertyAccess node) {
-    onAccess(node, classifyPropertyAccess(node));
+    onAccess(node, node.accept(ACCESS_SEMANTICS_VISITOR));
   }
 
   @override
   visitSimpleIdentifier(SimpleIdentifier node) {
-    AccessSemantics semantics = classifySimpleIdentifier(node);
+    AccessSemantics semantics = node.accept(ACCESS_SEMANTICS_VISITOR);
     if (semantics != null) {
       onAccess(node, semantics);
     }
   }
 }