rocket::mtls::x509::der_parser::asn1_rs::nom::number::streaming

Function be_u64

Source 
pub fn be_u64<I, E>(input: I) -> Result<(I, u64), Err<E>>
where
    E: ParseError<I>,
    I: Slice<RangeFrom<usize>> + InputIter<Item = u8> + InputLength,
Available on crate feature mtls only.
Expand description

Recognizes a big endian unsigned 8 bytes integer.

Streaming version: Will return Err(nom::Err::Incomplete(_)) if there is not enough data.

use nom::number::streaming::be_u64;

let parser = |s| {
  be_u64::<_, (_, ErrorKind)>(s)
};

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