Function winnow::combinator::separated_pair
source · pub fn separated_pair<Input, O1, Sep, O2, Error, P1, SepParser, P2>(
first: P1,
sep: SepParser,
second: P2
) -> impl Parser<Input, (O1, O2), Error>where
Input: Stream,
Error: ParserError<Input>,
P1: Parser<Input, O1, Error>,
SepParser: Parser<Input, Sep, Error>,
P2: Parser<Input, O2, Error>,
Expand description
Sequence three parsers, only returning the values of the first and third.
See also seq
to generalize this across any number of fields.
§Example
use winnow::combinator::separated_pair;
let mut parser = separated_pair("abc", "|", "efg");
assert_eq!(parser.parse_peek("abc|efg"), Ok(("", ("abc", "efg"))));
assert_eq!(parser.parse_peek("abc|efghij"), Ok(("hij", ("abc", "efg"))));
assert_eq!(parser.parse_peek(""), Err(ErrMode::Backtrack(InputError::new("", ErrorKind::Tag))));
assert_eq!(parser.parse_peek("123"), Err(ErrMode::Backtrack(InputError::new("123", ErrorKind::Tag))));