New analyzer_experimental snapshot.

pkg/analyzer_experimental/test/services/test_utils.dart

 // Copyright (c) 2013, 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 test_utils;
 
 import 'package:unittest/unittest.dart';
 
+import 'package:analyzer_experimental/src/generated/java_core.dart' show CharSequence;
 import 'package:analyzer_experimental/src/generated/engine.dart' show AnalysisContext, AnalysisContextImpl;
 import 'package:analyzer_experimental/src/generated/source.dart';
 import 'package:analyzer_experimental/src/generated/error.dart';
 import 'package:analyzer_experimental/src/generated/scanner.dart';
 import 'package:analyzer_experimental/src/generated/ast.dart';
 import 'package:analyzer_experimental/src/generated/parser.dart';
 
 
 /// Instances of the class [_GatheringErrorListener] implement an error listener
 /// that collects all of the errors passed to it for later examination.
@@ skipping 171 matching lines @@
 class _UnsupportedOperationException implements Exception {
   String toString() => 'UnsupportedOperationException';
 }
 
 
 /// Parse the given [source] as a statement and assert, if provided, that
 /// exactly a given set of [expectedErrorCodes] are encountered.
 Statement parseStatement(String source, [List<ErrorCode> expectedErrorCodes]) {
 
   var listener = new _GatheringErrorListener();
-  var scanner = new StringScanner(null, source, listener);
+  var reader = new CharSequenceReader(new CharSequence(source));
+  var scanner = new Scanner(null, reader, listener);
   listener.setLineInfo(new _TestSource(), scanner.lineStarts);
 
   var token = scanner.tokenize();
   var parser = new Parser(null, listener);
   var statement = parser.parseStatement(token);
   expect(statement, isNotNull);
 
   if (expectedErrorCodes != null) {
     listener.expectErrors(expectedErrorCodes);
   }
 
   return statement;
 }