Function winnow::combinator::terminated
source · pub fn terminated<Input, Output, Ignored, Error, ParseNext, IgnoredParser>(
parser: ParseNext,
ignored: IgnoredParser
) -> impl Parser<Input, Output, Error>where
Input: Stream,
Error: ParserError<Input>,
ParseNext: Parser<Input, Output, Error>,
IgnoredParser: Parser<Input, Ignored, Error>,
Expand description
Sequence two parsers, only returning the output of the first.
See also seq
to generalize this across any number of fields.
§Example
use winnow::combinator::terminated;
let mut parser = terminated("abc", "efg");
assert_eq!(parser.parse_peek("abcefg"), Ok(("", "abc")));
assert_eq!(parser.parse_peek("abcefghij"), Ok(("hij", "abc")));
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))));