1use std::{
5 fmt::{self, Display, Formatter},
6 ops::Add,
7};
8
9use serde::{Deserialize, Serialize};
10
11#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Hash, PartialOrd, Ord, Serialize, Deserialize)]
12#[repr(transparent)]
13pub struct Count(u64);
14
15impl Count {
16 pub const ZERO: Self = Self(0);
17
18 pub const fn new(count: u64) -> Self {
19 Self(count)
20 }
21
22 pub const fn as_u64(self) -> u64 {
23 self.0
24 }
25
26 pub const fn saturating_add(self, other: Self) -> Self {
27 Self(self.0.saturating_add(other.0))
28 }
29
30 pub const fn saturating_sub(self, other: Self) -> Self {
31 Self(self.0.saturating_sub(other.0))
32 }
33}
34
35impl Add for Count {
36 type Output = Self;
37
38 fn add(self, rhs: Self) -> Self {
39 Self(self.0 + rhs.0)
40 }
41}
42
43impl Display for Count {
44 fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
45 write!(f, "{}", self.0)
46 }
47}
48
49impl From<Count> for u64 {
50 fn from(count: Count) -> Self {
51 count.0
52 }
53}