axhash_core/hasher/
build.rs

1use super::AxHasher;
2
3use crate::math::{DEFAULT_ACC, seed_lane};
4
5use core::hash::BuildHasher;
6
7#[derive(Clone, Copy)]
8pub struct AxBuildHasher {
9    pub(crate) prepared_seed: u64,
10}
11
12impl AxBuildHasher {
13    #[inline(always)]
14    pub const fn new() -> Self {
15        Self {
16            prepared_seed: DEFAULT_ACC,
17        }
18    }
19
20    #[inline(always)]
21    pub const fn with_seed(seed: u64) -> Self {
22        Self {
23            prepared_seed: seed_lane(seed, 0),
24        }
25    }
26
27    #[inline]
28    pub fn random() -> Self {
29        match getrandom::u64() {
30            Ok(seed) => Self::with_seed(seed),
31            Err(e) => panic!("failed to obtain random seed for AxBuildHasher: {e:?}"),
32        }
33    }
34}
35
36impl Default for AxBuildHasher {
37    #[inline(always)]
38    fn default() -> Self {
39        Self::new()
40    }
41}
42
43impl BuildHasher for AxBuildHasher {
44    type Hasher = AxHasher;
45
46    #[inline(always)]
47    fn build_hasher(&self) -> Self::Hasher {
48        AxHasher {
49            acc: self.prepared_seed,
50            sponge: 0,
51            sponge_bits: 0,
52        }
53    }
54}
axhash_core/hasher/build.rs

axhash_core/hasher/
build.rs
