Function winnow::bytes::complete::take_while1

pub fn take_while1<T, I, Error: ParseError<I>>(
    list: T
) -> impl Fn(I) -> IResult<I, <I as Stream>::Slice, Error>where
    I: Stream,
    T: ContainsToken<<I as Stream>::Token>,

👎Deprecated since 0.1.0: Replaced with <code>winnow::bytes::take_while1</code>

Returns the longest (at least 1) input slice that matches the predicate.

The parser will return the longest slice that matches the given predicate (a function that takes the input and returns a bool).

It will return an Err(ErrMode::Backtrack((_, ErrorKind::TakeWhile1))) if the pattern wasn’t met.

Example

use winnow::bytes::complete::take_while1;
use winnow::stream::AsChar;

fn alpha(s: &[u8]) -> IResult<&[u8], &[u8]> {
  take_while1(AsChar::is_alpha)(s)
}

assert_eq!(alpha(b"latin123"), Ok((&b"123"[..], &b"latin"[..])));
assert_eq!(alpha(b"latin"), Ok((&b""[..], &b"latin"[..])));
assert_eq!(alpha(b"12345"), Err(ErrMode::Backtrack(Error::new(&b"12345"[..], ErrorKind::TakeWhile1))));

WARNING: Deprecated, replaced with winnow::bytes::take_while1