pub fn many_till<I, O, P, E, F, G>(
f: F,
g: G
) -> impl FnMut(I) -> IResult<I, (Vec<O>, P), E> where
I: Clone + InputLength,
F: Parser<I, O, E>,
G: Parser<I, P, E>,
E: ParseError<I>, Expand description
Applies the parser f until the parser g produces
a result. Returns a pair consisting of the results of
f in a Vec and the result of g.
use nom::multi::many_till;
use nom::bytes::complete::tag;
fn parser(s: &str) -> IResult<&str, (Vec<&str>, &str)> {
many_till(tag("abc"), tag("end"))(s)
};
assert_eq!(parser("abcabcend"), Ok(("", (vec!["abc", "abc"], "end"))));
assert_eq!(parser("abc123end"), Err(Err::Error(Error::new("123end", ErrorKind::Tag))));
assert_eq!(parser("123123end"), Err(Err::Error(Error::new("123123end", ErrorKind::Tag))));
assert_eq!(parser(""), Err(Err::Error(Error::new("", ErrorKind::Tag))));
assert_eq!(parser("abcendefg"), Ok(("efg", (vec!["abc"], "end"))));