raw_btree/
item.rs

1use std::{borrow::Borrow, cmp::Ordering};
2
3#[derive(Debug, Clone)]
4pub struct Item<K, V> {
5	pub key: K,
6	pub value: V,
7}
8
9impl<K, V> Item<K, V> {
10	pub fn new(key: K, value: V) -> Self {
11		Self { key, value }
12	}
13
14	pub fn key_cmp<Q>(&self, key: &Q) -> Ordering
15	where
16		K: Borrow<Q> + Ord,
17		Q: Ord + ?Sized,
18	{
19		self.key.borrow().cmp(key)
20	}
21}
22
23impl<K: PartialEq, V> PartialEq for Item<K, V> {
24	fn eq(&self, other: &Self) -> bool {
25		self.key == other.key
26	}
27}
28
29impl<K: Eq, V> Eq for Item<K, V> {}
30
31impl<K: PartialOrd, V> PartialOrd for Item<K, V> {
32	fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
33		self.key.partial_cmp(&other.key)
34	}
35}
36
37impl<K: Ord, V> Ord for Item<K, V> {
38	fn cmp(&self, other: &Self) -> std::cmp::Ordering {
39		self.key.cmp(&other.key)
40	}
41}
42
43impl<K: std::fmt::Display, V: std::fmt::Display> std::fmt::Display for Item<K, V> {
44	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
45		write!(f, "({}, {})", self.key, self.value)
46	}
47}