pub fn many1<I, O, E, F>(f: F) -> impl FnMut(I) -> IResult<I, Vec<O>, E> where
I: Clone + InputLength,
F: Parser<I, O, E>,
E: ParseError<I>,
Expand description
Runs the embedded parser until it fails and
returns the results in a Vec
. Fails if
the embedded parser does not produce at least
one result.
Arguments
f
The parser to apply.
Note: If the parser passed to many1
accepts empty inputs
(like alpha0
or digit0
), many1
will return an error,
to prevent going into an infinite loop.
use nom::multi::many1;
use nom::bytes::complete::tag;
fn parser(s: &str) -> IResult<&str, Vec<&str>> {
many1(tag("abc"))(s)
}
assert_eq!(parser("abcabc"), Ok(("", vec!["abc", "abc"])));
assert_eq!(parser("abc123"), Ok(("123", vec!["abc"])));
assert_eq!(parser("123123"), Err(Err::Error(Error::new("123123", ErrorKind::Tag))));
assert_eq!(parser(""), Err(Err::Error(Error::new("", ErrorKind::Tag))));