1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
#![cfg_attr(not(test), no_std)]
#[cfg(feature = "alloc")]
extern crate alloc;
mod indirect;
mod layered;
mod option;
mod primitive;
pub use layered::Layered;
pub trait BitSet {
const UPPER_BOUND: u32;
fn get(&self, index: u32) -> bool;
fn find_set(&self, lower_bound: u32) -> Option<u32>;
fn is_empty(&self) -> bool {
self.find_set(0).is_none()
}
}
pub trait BitSetMut: BitSet {
fn set(&mut self, index: u32, bit: bool);
}
pub type BitSet8 = u8;
pub type BitSet16 = u16;
pub type BitSet32 = u32;
pub type BitSet64 = u64;
pub type BitSet128 = u128;
pub type BitSet256 = layered::Layered<u32, u8, 32>;
pub type BitSet512 = layered::Layered<u64, u8, 64>;
pub type BitSet1024 = layered::Layered<u64, u16, 64>;
pub type BitSet2048 = layered::Layered<u64, u32, 64>;
pub type BitSet4096 = layered::Layered<u64, u64, 64>;
pub type BitSet8192 = layered::Layered<u64, u128, 64>;
pub type BitSet16384 = layered::Layered<u128, u128, 128>;
#[cfg(feature = "alloc")]
pub type BitSet32768 = layered::Layered<u64, Option<alloc::boxed::Box<BitSet512>>, 64>;
#[cfg(feature = "alloc")]
pub type BitSet65536 = layered::Layered<u64, Option<alloc::boxed::Box<BitSet1024>>, 64>;
#[cfg(feature = "alloc")]
pub type BitSet131072 = layered::Layered<u64, Option<alloc::boxed::Box<BitSet2048>>, 64>;
#[cfg(feature = "alloc")]
pub type BitSet262144 = layered::Layered<u64, Option<alloc::boxed::Box<BitSet4096>>, 64>;
#[cfg(feature = "alloc")]
pub type BitSet524288 = layered::Layered<u64, Option<alloc::boxed::Box<BitSet8192>>, 64>;
#[cfg(feature = "alloc")]
pub type BitSet1048576 = layered::Layered<u64, Option<alloc::boxed::Box<BitSet16384>>, 64>;
#[cfg(feature = "alloc")]
pub type BitSet2097152 = layered::Layered<u64, Option<alloc::boxed::Box<BitSet32768>>, 64>;
#[cfg(feature = "alloc")]
pub type BitSet4194304 = layered::Layered<u64, Option<alloc::boxed::Box<BitSet65536>>, 64>;
#[cfg(feature = "alloc")]
pub type BitSet8388608 = layered::Layered<u64, Option<alloc::boxed::Box<BitSet131072>>, 64>;
#[cfg(feature = "alloc")]
pub type BitSet16777216 = layered::Layered<u64, Option<alloc::boxed::Box<BitSet262144>>, 64>;
#[cfg(feature = "alloc")]
pub type BitSet33554432 = layered::Layered<u64, Option<alloc::boxed::Box<BitSet524288>>, 64>;
#[cfg(feature = "alloc")]
pub type BitSet67108864 = layered::Layered<u64, Option<alloc::boxed::Box<BitSet1048576>>, 64>;
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn check_bounds() {
assert_eq!(BitSet8::UPPER_BOUND, 8);
assert_eq!(BitSet16::UPPER_BOUND, 16);
assert_eq!(BitSet32::UPPER_BOUND, 32);
assert_eq!(BitSet64::UPPER_BOUND, 64);
assert_eq!(BitSet128::UPPER_BOUND, 128);
assert_eq!(BitSet256::UPPER_BOUND, 256);
assert_eq!(BitSet512::UPPER_BOUND, 512);
assert_eq!(BitSet1024::UPPER_BOUND, 1024);
assert_eq!(BitSet2048::UPPER_BOUND, 2048);
assert_eq!(BitSet4096::UPPER_BOUND, 4096);
assert_eq!(BitSet8192::UPPER_BOUND, 8192);
assert_eq!(BitSet16384::UPPER_BOUND, 16384);
}
#[cfg(feature = "alloc")]
#[test]
fn check_large_bounds() {
assert_eq!(BitSet32768::UPPER_BOUND, 32768);
assert_eq!(BitSet65536::UPPER_BOUND, 65536);
assert_eq!(BitSet131072::UPPER_BOUND, 131072);
assert_eq!(BitSet262144::UPPER_BOUND, 262144);
assert_eq!(BitSet524288::UPPER_BOUND, 524288);
assert_eq!(BitSet1048576::UPPER_BOUND, 1048576);
assert_eq!(BitSet2097152::UPPER_BOUND, 2097152);
assert_eq!(BitSet4194304::UPPER_BOUND, 4194304);
assert_eq!(BitSet8388608::UPPER_BOUND, 8388608);
assert_eq!(BitSet16777216::UPPER_BOUND, 16777216);
assert_eq!(BitSet33554432::UPPER_BOUND, 33554432);
assert_eq!(BitSet67108864::UPPER_BOUND, 67108864);
}
#[cfg(feature = "alloc")]
#[test]
fn check_set() {
let mut bits = Layered::<u64, u64, 64>::default();
assert_eq!(bits.get(421), false);
bits.set(421, true);
assert_eq!(bits.get(421), true);
bits.set(213, true);
assert_eq!(bits.find_set(0), Some(213));
assert_eq!(bits.find_set(300), Some(421));
assert_eq!(bits.find_set(421 + 1), None);
bits.set(213, false);
assert_eq!(bits.find_set(0), Some(421));
assert_eq!(bits.find_set(421 + 1), None);
bits.set(421, false);
assert_eq!(bits.get(421), false);
}
}