Function parser_combinators::any

pub fn any<I>() -> Any<I> where
    I: Stream, 

Parses any token

 let mut char_parser = any();
 assert_eq!(char_parser.parse("!").map(|x| x.0), Ok('!'));
 assert!(char_parser.parse("").is_err());
 let mut byte_parser = any();
 assert_eq!(byte_parser.parse(&b"!"[..]).map(|x| x.0), Ok(&b'!'));
 assert!(byte_parser.parse(&b""[..]).is_err());