Expand description
Succeeds only if the stream is at end of input, fails otherwise.
let mut parser = eof();
assert_eq!(parser.easy_parse(position::Stream::new("")), Ok(((), position::Stream::new(""))));
assert_eq!(parser.easy_parse(position::Stream::new("x")), Err(easy::Errors {
position: SourcePosition::default(),
errors: vec![
easy::Error::Unexpected('x'.into()),
easy::Error::Expected("end of input".into())
]
}));