omega_cache/core/
key.rs

1use std::borrow::Borrow;
2use std::hash::{Hash, Hasher};
3use std::ops::Deref;
4use std::sync::Arc;
5
6/// A key wrapper that uses `Arc` for cheap cloning and equality comparisons.
7#[repr(transparent)]
8#[derive(Debug)]
9pub struct Key<K>(Arc<K>)
10where
11    K: Eq + Hash;
12
13impl<K> Key<K>
14where
15    K: Eq + Hash,
16{
17    /// Wraps a key in an Arc for shared ownership.
18    pub(crate) fn new(key: K) -> Self {
19        Self(Arc::new(key))
20    }
21}
22
23impl<K> Clone for Key<K>
24where
25    K: Eq + Hash,
26{
27    fn clone(&self) -> Self {
28        Self(self.0.clone())
29    }
30}
31
32impl<K> PartialEq<Self> for Key<K>
33where
34    K: Eq + Hash,
35{
36    fn eq(&self, other: &Self) -> bool {
37        self.0 == other.0
38    }
39}
40
41impl<K> Eq for Key<K> where K: Eq + Hash {}
42
43impl<K> Hash for Key<K>
44where
45    K: Eq + Hash,
46{
47    fn hash<H: Hasher>(&self, state: &mut H) {
48        self.0.hash(state)
49    }
50}
51
52impl<K> AsRef<K> for Key<K>
53where
54    K: Eq + Hash,
55{
56    fn as_ref(&self) -> &K {
57        self.0.as_ref()
58    }
59}
60
61impl<K> Borrow<K> for Key<K>
62where
63    K: Eq + Hash,
64{
65    fn borrow(&self) -> &K {
66        self.0.as_ref()
67    }
68}
69
70impl Borrow<str> for Key<String> {
71    fn borrow(&self) -> &str {
72        self.0.as_ref().borrow()
73    }
74}
75
76impl Borrow<[u8]> for Key<String> {
77    fn borrow(&self) -> &[u8] {
78        self.0.as_ref().as_bytes()
79    }
80}
81
82impl<T> Borrow<[T]> for Key<Vec<T>>
83where
84    T: Eq + Hash,
85{
86    fn borrow(&self) -> &[T] {
87        self.0.as_ref().as_slice()
88    }
89}
90
91impl<K> Deref for Key<K>
92where
93    K: Eq + Hash,
94{
95    type Target = K;
96
97    fn deref(&self) -> &Self::Target {
98        self.0.as_ref()
99    }
100}
omega_cache/core/key.rs

omega_cache/core/
key.rs
