1use crate::Hasher as _;
2
3const BASIS: u32 = 0x811c9dc5;
4const PRIME: u32 = 0x1000193;
5
6/// 32-bit Fowler-Noll-Vo hasher
7pub struct Hasher {
8 state: u32,
9}
10
11impl Default for Hasher {
12 fn default() -> Self {
13 Hasher { state: BASIS }
14 }
15}
16
17impl crate::Hasher for Hasher {
18 #[inline]
19 fn finish32(&self) -> u32 {
20 self.state
21 }
22}
23
24impl core::hash::Hasher for Hasher {
25 #[inline]
26 fn write(&mut self, bytes: &[u8]) {
27 for byte: &u8 in bytes {
28 self.state ^= u32::from(*byte);
29 self.state = self.state.wrapping_mul(PRIME);
30 }
31 }
32
33 #[inline]
34 fn finish(&self) -> u64 {
35 self.finish32().into()
36 }
37}
38