Split File into File and RandomAccessFile.

frog/leg/tools/mini_parser.dart

 // Copyright (c) 2011, 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('parser');
 
 #import('../scanner/scanner_implementation.dart');
 #import('../scanner/scannerlib.dart');
 
 #source('../../source.dart');
@@ skipping 74 matching lines @@
   } catch (MalformedInputException ex) {
     var message = ex.message;
     if (message is !String) message = "unexpected character";
     Token fakeToken = new Token($QUESTION, scanner.charOffset);
     new MyListener(source).error(message, fakeToken);
     throw;
   }
 }
 
 List<int> read(String filename) {
-  File file = new File(filename);
-  file.openSync();
+  File file = new File(filename).openSync();
   bool threw = true;
   try {
     int size = file.lengthSync();
     List<int> bytes = new List<int>(size + 1);
     file.readListSync(bytes, 0, size);
     bytes[size] = $EOF;
     threw = false;
     return bytes;
   } finally {
     try {
@@ skipping 20 matching lines @@
     ++errorCount;
     if (token !== null) {
       String tokenString = token.toString();
       int begin = token.charOffset;
       int end = begin + tokenString.length;
       throw new ParserError(file.getLocationMessage(message, begin, end, true));
     }
     throw new ParserError(message);
   }
 }