Function winnow::ascii::space0

source · 
pub fn space0<Input, Error>(
    input: &mut Input
) -> PResult<<Input as Stream>::Slice, Error>
where
    Input: StreamIsPartial + Stream,
    <Input as Stream>::Token: AsChar,
    Error: ParserError<Input>,
Expand description

Recognizes zero or more spaces and tabs.

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 space0<'i>(input: &mut &'i str) -> PResult<&'i str>

§Example

assert_eq!(space0::<_, InputError<_>>.parse_peek(Partial::new(" \t21c")), Ok((Partial::new("21c"), " \t")));
assert_eq!(space0::<_, InputError<_>>.parse_peek(Partial::new("Z21c")), Ok((Partial::new("Z21c"), "")));
assert_eq!(space0::<_, InputError<_>>.parse_peek(Partial::new("")), Err(ErrMode::Incomplete(Needed::new(1))));