mirror of
https://github.com/denoland/deno
synced 2024-08-28 20:39:51 +00:00
50 lines
1,016 B
Rust
50 lines
1,016 B
Rust
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
|
|
|
|
use std::hash::Hasher;
|
|
|
|
/// A very fast insecure hasher that uses the xxHash algorithm.
|
|
#[derive(Default)]
|
|
pub struct FastInsecureHasher(twox_hash::XxHash64);
|
|
|
|
impl FastInsecureHasher {
|
|
pub fn new() -> Self {
|
|
Self::default()
|
|
}
|
|
|
|
pub fn hash(hashable: impl std::hash::Hash) -> u64 {
|
|
Self::new().write_hashable(hashable).finish()
|
|
}
|
|
|
|
pub fn write_str(&mut self, text: &str) -> &mut Self {
|
|
self.write(text.as_bytes());
|
|
self
|
|
}
|
|
|
|
pub fn write(&mut self, bytes: &[u8]) -> &mut Self {
|
|
self.0.write(bytes);
|
|
self
|
|
}
|
|
|
|
pub fn write_u8(&mut self, value: u8) -> &mut Self {
|
|
self.0.write_u8(value);
|
|
self
|
|
}
|
|
|
|
pub fn write_u64(&mut self, value: u64) -> &mut Self {
|
|
self.0.write_u64(value);
|
|
self
|
|
}
|
|
|
|
pub fn write_hashable(
|
|
&mut self,
|
|
hashable: impl std::hash::Hash,
|
|
) -> &mut Self {
|
|
hashable.hash(&mut self.0);
|
|
self
|
|
}
|
|
|
|
pub fn finish(&self) -> u64 {
|
|
self.0.finish()
|
|
}
|
|
}
|