Function winnow::character::alpha0

pub fn alpha0<I, E: ParseError<I>>(
    input: I
) -> IResult<I, <I as Stream>::Slice, E>where
    I: StreamIsPartial + Stream,
    <I as Stream>::Token: AsChar,

Recognizes zero or more lowercase and uppercase ASCII alphabetic characters: a-z, A-Z

Complete version: Will return the whole input if no terminating token is found (a non alphabetic character).

Partial version: Will return Err(winnow::error::ErrMode::Incomplete(_)) if there’s not enough input data, or if no terminating token is found (a non alphabetic character).

Example

fn parser(input: &str) -> IResult<&str, &str> {
    alpha0(input)
}

assert_eq!(parser("ab1c"), Ok(("1c", "ab")));
assert_eq!(parser("1c"), Ok(("1c", "")));
assert_eq!(parser(""), Ok(("", "")));

assert_eq!(alpha0::<_, Error<_>>(Partial::new("ab1c")), Ok((Partial::new("1c"), "ab")));
assert_eq!(alpha0::<_, Error<_>>(Partial::new("1c")), Ok((Partial::new("1c"), "")));
assert_eq!(alpha0::<_, Error<_>>(Partial::new("")), Err(ErrMode::Incomplete(Needed::new(1))));