Skeleton for lexical error recovery.

pkg/dart_scanner/lib/src/abstract_scanner.dart

 // Copyright (c) 2012, 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 dart_scanner.abstract_scanner;
 
 import '../dart_scanner.dart' show
     Scanner;
 
 import 'keyword.dart' show
@@ skipping 10 matching lines @@
     SymbolToken,
     Token,
     UnmatchedToken,
     UnterminatedToken;
 
 import 'token_constants.dart';
 
 import 'characters.dart';
 
 abstract class AbstractScanner implements Scanner {
-  // TODO(ahe): Move this class to implementation.
-
   final bool includeComments;
 
   /**
    * The string offset for the next token that will be created.
    *
    * Note that in the [Utf8BytesScanner], [stringOffset] and [scanOffset] values
    * are different. One string character can be encoded using multiple UTF-8
    * bytes.
    */
   int tokenStart = -1;
@@ skipping 1122 matching lines @@
 
 PrecedenceInfo closeBraceInfoFor(BeginGroupToken begin) {
   return const {
     '(': CLOSE_PAREN_INFO,
     '[': CLOSE_SQUARE_BRACKET_INFO,
     '{': CLOSE_CURLY_BRACKET_INFO,
     '<': GT_INFO,
     r'${': CLOSE_CURLY_BRACKET_INFO,
   }[begin.value];
 }