This proc macro derives a MultihashDigest implementation from a list of hashers.

Example

use multihash::derive::Multihash;
use multihash::{Hasher, MultihashDigest};

const FOO: u64 = 0x01;
const BAR: u64 = 0x02;

#[derive(Clone, Debug, Eq, Multihash, PartialEq)]
pub enum Multihash {
#[mh(code = FOO, hasher = multihash::Sha2_256)]
Foo(multihash::Sha2Digest<multihash::U32>),
#[mh(code = BAR, hasher = multihash::Sha2_512)]
Bar(multihash::Sha2Digest<multihash::U64>),
}