drillhash 0.1.0

Drillhash is an asic-resistant hashing algorithm for Ore.
Documentation 
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mod add;
mod div;
mod mask;
mod mul;
mod sqrt;
mod sub;
mod xor;

use add::*;
// use div::*;
// use left::*;
// use mask::*;
use mul::*;
// use right::*;
// use sqrt::*;
use sub::*;
// use xor::*;

use enum_dispatch::enum_dispatch;

use crate::read_noise;

// TODO Fix sqrt

#[derive(Debug, strum::EnumIter)]
#[enum_dispatch(Op)]
pub enum RandomOp {
    Add(Add),
    Sub(Sub),
    Mul(Mul),
    // Div(Div),
    // Sqrt(Sqrt),
    // Xor(Xor),
}

#[enum_dispatch]
pub trait Op {
    fn op(&mut self, addr: &mut u64, challenge: [u8; 32], nonce: [u8; 8], noise: &[u8]) -> bool;
    fn update_state(&mut self, addr: &mut u64, challenge: [u8; 32], nonce: [u8; 8], noise: &[u8]);
}

pub fn random_op<'a>(
    ops: &'a mut [RandomOp],
    addr: &mut u64,
    challenge: [u8; 32],
    nonce: [u8; 8],
    noise: &[u8],
) -> &'a mut RandomOp {
    let seed = read_noise(addr, challenge, nonce, noise);
    let opcode = usize::from_le_bytes(seed);
    &mut ops[opcode % ops.len()]
}