LinkedListToken startMarker = (LinkedListToken)stream.LT(-1);
startMarker.setType(RegexSimpleParser.REGEXP_DELIMITER);
stream.seek(stream.index()-1);
RegexSimpleParser parser = new RegexSimpleParser(stream);
parser.setTreeAdaptor(new LinkedListTreeAdaptor());
parser.setInput(lexer, cs);
return parser;
}