Function winnow::combinator::rest_len
source · pub fn rest_len<Input, Error>(input: &mut Input) -> PResult<usize, Error>where
Input: Stream,
Error: ParserError<Input>,
Expand description
Return the length of the remaining input.
Note: this does not advance the Stream
§Effective Signature
Assuming you are parsing a &str
Stream:
pub fn rest_len(input: &mut &str) -> PResult<usize>
§Example
use winnow::combinator::rest_len;
assert_eq!(rest_len::<_,InputError<_>>.parse_peek("abc"), Ok(("abc", 3)));
assert_eq!(rest_len::<_,InputError<_>>.parse_peek(""), Ok(("", 0)));