Refactor List.setRange function.

sdk/lib/io/mime_multipart_parser.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.
 
 part of dart.io;
 
 /**
  * Parser for MIME multipart types of data as described in RFC 2046
  * section 5.1.1. The data to parse is supplied through the [:update:]
  * method. As the data is parsed the following callbacks are called:
@@ skipping 31 matching lines @@
   // type parameter, that is without the -- prefix.
   _MimeMultipartParser(String boundary) {
     List<int> charCodes = boundary.codeUnits;
     _boundary = new List<int>(4 + charCodes.length);
     // Set-up the matching boundary preceding it with CRLF and two
     // dashes.
     _boundary[0] = _CharCode.CR;
     _boundary[1] = _CharCode.LF;
     _boundary[2] = _CharCode.DASH;
     _boundary[3] = _CharCode.DASH;
-    _boundary.setRange(4, charCodes.length, charCodes);
+    _boundary.setRange(4, 4 + charCodes.length, charCodes);
     _state = _START;
     _headerField = new StringBuffer();
     _headerValue = new StringBuffer();
   }
 
   int update(List<int> buffer, int offset, int count) {
     // Current index in the data buffer. If index is negative then it
     // is the index into the artificial prefix of the boundary string.
     int index;
     // Number of boundary bytes to artificially place before the supplied data.
@@ skipping 261 matching lines @@
   Function partDataReceived;
   Function partEnd;
 }
 
 
 class MimeParserException implements Exception {
   const MimeParserException([String this.message = ""]);
   String toString() => "MimeParserException: $message";
   final String message;
 }