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// Copyright 2018-2023 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()
}
}
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