Function be_u16

pub fn be_u16<I, E: ParseError<I>>(input: I) -> IResult<I, u16, E>
where
    I: Slice<RangeFrom<usize>> + InputIter<Item = u8> + InputLength,

Recognizes a big endian unsigned 2 bytes integer.

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

use nom::number::streaming::be_u16;

let parser = |s| {
  be_u16::<_, (_, ErrorKind)>(s)
};

assert_eq!(parser(&b"\x00\x01abcd"[..]), Ok((&b"abcd"[..], 0x0001)));
assert_eq!(parser(&b"\x01"[..]), Err(Err::Incomplete(Needed::new(1))));