pub fn alpha1<Input, Error>(
input: &mut Input
) -> PResult<<Input as Stream>::Slice, Error>
Expand description
Recognizes one or more lowercase and uppercase ASCII alphabetic characters: 'a'..='z'
, 'A'..='Z'
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 alphabetic 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 alphabetic character).
Effective Signature
Assuming you are parsing a &str
Stream:
pub fn alpha1<'i>(input: &mut &'i str) -> PResult<&'i str>
Example
fn parser<'s>(input: &mut &'s str) -> PResult<&'s str, InputError<&'s str>> {
alpha1.parse_next(input)
}
assert_eq!(parser.parse_peek("aB1c"), Ok(("1c", "aB")));
assert_eq!(parser.parse_peek("1c"), Err(ErrMode::Backtrack(InputError::new("1c", ErrorKind::Slice))));
assert_eq!(parser.parse_peek(""), Err(ErrMode::Backtrack(InputError::new("", ErrorKind::Slice))));
assert_eq!(alpha1::<_, InputError<_>>.parse_peek(Partial::new("aB1c")), Ok((Partial::new("1c"), "aB")));
assert_eq!(alpha1::<_, InputError<_>>.parse_peek(Partial::new("1c")), Err(ErrMode::Backtrack(InputError::new(Partial::new("1c"), ErrorKind::Slice))));
assert_eq!(alpha1::<_, InputError<_>>.parse_peek(Partial::new("")), Err(ErrMode::Incomplete(Needed::new(1))));