Function winnow::sequence::separated_pair

pub fn separated_pair<I, O1, O2, O3, E: ParseError<I>, F, G, H>(
    first: F,
    sep: G,
    second: H
) -> impl Parser<I, (O1, O3), E>where
    I: Stream,
    F: Parser<I, O1, E>,
    G: Parser<I, O2, E>,
    H: Parser<I, O3, E>,

Apply three parsers, only returning the values of the first and third.

Arguments

• first The first parser to apply.
• sep The separator parser to apply.
• second The second parser to apply.

Example

use winnow::sequence::separated_pair;
use winnow::bytes::tag;

let mut parser = separated_pair("abc", "|", "efg");

assert_eq!(parser.parse_next("abc|efg"), Ok(("", ("abc", "efg"))));
assert_eq!(parser.parse_next("abc|efghij"), Ok(("hij", ("abc", "efg"))));
assert_eq!(parser.parse_next(""), Err(ErrMode::Backtrack(Error::new("", ErrorKind::Tag))));
assert_eq!(parser.parse_next("123"), Err(ErrMode::Backtrack(Error::new("123", ErrorKind::Tag))));