pub fn fill<'a, I, O, E, F>(
f: F,
buf: &'a mut [O]
) -> impl FnMut(I) -> IResult<I, (), E> + 'a where
I: Clone + PartialEq,
F: Fn(I) -> IResult<I, O, E> + 'a,
E: ParseError<I>,
Expand description
Runs the embedded parser repeatedly, filling the given slice with results. This parser fails if the input runs out before the given slice is full.
Arguments
f
The parser to apply.buf
The slice to fill
use nom::multi::fill;
use nom::bytes::complete::tag;
fn parser(s: &str) -> IResult<&str, [&str; 2]> {
let mut buf = ["", ""];
let (rest, ()) = fill(tag("abc"), &mut buf)(s)?;
Ok((rest, buf))
}
assert_eq!(parser("abcabc"), Ok(("", ["abc", "abc"])));
assert_eq!(parser("abc123"), Err(Err::Error(Error::new("123", ErrorKind::Tag))));
assert_eq!(parser("123123"), Err(Err::Error(Error::new("123123", ErrorKind::Tag))));
assert_eq!(parser(""), Err(Err::Error(Error::new("", ErrorKind::Tag))));
assert_eq!(parser("abcabcabc"), Ok(("abc", ["abc", "abc"])));