Function winnow::ascii::multispace1
source · pub fn multispace1<Input, Error>(
input: &mut Input
) -> PResult<<Input as Stream>::Slice, Error>where
Input: StreamIsPartial + Stream,
<Input as Stream>::Token: AsChar + Clone,
Error: ParserError<Input>,
Expand description
Recognizes one or more spaces, tabs, carriage returns and line feeds.
Complete version: will return an error if there’s not enough input data, or the whole input if no terminating token is found (a non space character).
[Partial version][crate::_topic::partial]: 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 multispace1<'i>(input: &mut &'i str) -> PResult<&'i str>
Example
fn parser<'s>(input: &mut &'s str) -> PResult<&'s str, InputError<&'s str>> {
multispace1.parse_next(input)
}
assert_eq!(parser.parse_peek(" \t\n\r21c"), Ok(("21c", " \t\n\r")));
assert_eq!(parser.parse_peek("H2"), Err(ErrMode::Backtrack(InputError::new("H2", ErrorKind::Slice))));
assert_eq!(parser.parse_peek(""), Err(ErrMode::Backtrack(InputError::new("", ErrorKind::Slice))));
assert_eq!(multispace1::<_, InputError<_>>.parse_peek(Partial::new(" \t\n\r21c")), Ok((Partial::new("21c"), " \t\n\r")));
assert_eq!(multispace1::<_, InputError<_>>.parse_peek(Partial::new("H2")), Err(ErrMode::Backtrack(InputError::new(Partial::new("H2"), ErrorKind::Slice))));
assert_eq!(multispace1::<_, InputError<_>>.parse_peek(Partial::new("")), Err(ErrMode::Incomplete(Needed::new(1))));