Function winnow::ascii::multispace0

pub fn multispace0<Input, Error>(
    input: &mut Input,
) -> PResult<<Input as Stream>::Slice, Error>
where
    Input: StreamIsPartial + Stream,
    <Input as Stream>::Token: AsChar + Clone,
    Error: ParserError<Input>,

Recognizes zero or more spaces, tabs, carriage returns and line feeds.

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

Effective Signature

Assuming you are parsing a &str Stream:

pub fn multispace0<'i>(input: &mut &'i str) -> PResult<&'i str>

Example

fn parser<'s>(input: &mut &'s str) -> PResult<&'s str, InputError<&'s str>> {
    multispace0.parse_next(input)
}

assert_eq!(parser.parse_peek(" \t\n\r21c"), Ok(("21c", " \t\n\r")));
assert_eq!(parser.parse_peek("Z21c"), Ok(("Z21c", "")));
assert_eq!(parser.parse_peek(""), Ok(("", "")));

assert_eq!(multispace0::<_, InputError<_>>.parse_peek(Partial::new(" \t\n\r21c")), Ok((Partial::new("21c"), " \t\n\r")));
assert_eq!(multispace0::<_, InputError<_>>.parse_peek(Partial::new("Z21c")), Ok((Partial::new("Z21c"), "")));
assert_eq!(multispace0::<_, InputError<_>>.parse_peek(Partial::new("")), Err(ErrMode::Incomplete(Needed::new(1))));