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use hash_db::Hasher;
use hash256_std_hasher::Hash256StdHasher;
use crate::hash::H256;
pub mod blake2 {
use super::{Hasher, Hash256StdHasher, H256};
#[cfg(feature = "std")]
use crate::hashing::blake2_256;
#[cfg(not(feature = "std"))]
extern "C" {
fn ext_blake2_256(data: *const u8, len: u32, out: *mut u8);
}
#[cfg(not(feature = "std"))]
fn blake2_256(data: &[u8]) -> [u8; 32] {
let mut result: [u8; 32] = Default::default();
unsafe {
ext_blake2_256(data.as_ptr(), data.len() as u32, result.as_mut_ptr());
}
result
}
#[derive(Debug)]
pub struct Blake2Hasher;
impl Hasher for Blake2Hasher {
type Out = H256;
type StdHasher = Hash256StdHasher;
const LENGTH: usize = 32;
fn hash(x: &[u8]) -> Self::Out {
blake2_256(x).into()
}
}
}