Function be_u64

pub fn be_u64<Input, Error>(input: &mut Input) -> Result<u64, Error>
where
    Input: StreamIsPartial + Stream<Token = u8>,
    Error: ParserError<Input>,

Recognizes a big endian unsigned 8 bytes integer.

Complete version: Returns an error if there is not enough input data.

[Partial version][crate::_topic::partial]: Will return Err(winnow::error::ErrMode::Incomplete(_)) if there is not enough data.

Example

use winnow::binary::be_u64;

fn parser(s: &mut &[u8]) -> ModalResult<u64> {
    be_u64.parse_next(s)
}

assert_eq!(parser.parse_peek(&b"\x00\x01\x02\x03\x04\x05\x06\x07abcefg"[..]), Ok((&b"abcefg"[..], 0x0001020304050607)));
assert!(parser.parse_peek(&b"\x01"[..]).is_err());

use winnow::binary::be_u64;

fn parser(s: &mut Partial<&[u8]>) -> ModalResult<u64> {
    be_u64.parse_next(s)
}

assert_eq!(parser.parse_peek(Partial::new(&b"\x00\x01\x02\x03\x04\x05\x06\x07abcd"[..])), Ok((Partial::new(&b"abcd"[..]), 0x0001020304050607)));
assert_eq!(parser.parse_peek(Partial::new(&b"\x01"[..])), Err(ErrMode::Incomplete(Needed::new(7))));