dactyl 0.13.2

A small library to quickly stringify integers with basic formatting.
Documentation 
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

/*!
# Dactyl: Nice `u64`.
*/

use crate::NiceSeparator;
use std::num::{
	NonZeroUsize,
	NonZeroU64,
};
use super::{
	Digiter,
	nice_arr,
	nice_str,
	nice_uint,
	NiceChar,
};



#[expect(dead_code, reason = "For readability.")]
#[repr(u8)]
#[derive(Debug, Clone, Copy, Eq, Ord, PartialEq, PartialOrd)]
/// # `NiceU64` Indices.
enum NiceU64Idx {
	From00 =  0_u8, // 1
	From01 =  1_u8, // 8
	From02 =  2_u8, // ,
	From03 =  3_u8, // 4
	From04 =  4_u8, // 4
	From05 =  5_u8, // 6
	From06 =  6_u8, // ,
	From07 =  7_u8, // 7
	From08 =  8_u8, // 4
	From09 =  9_u8, // 4
	From10 = 10_u8, // ,
	From11 = 11_u8, // 0
	From12 = 12_u8, // 7
	From13 = 13_u8, // 3
	From14 = 14_u8, // ,
	From15 = 15_u8, // 7
	From16 = 16_u8, // 0
	From17 = 17_u8, // 9
	From18 = 18_u8, // ,
	From19 = 19_u8, // 5
	From20 = 20_u8, // 5
	From21 = 21_u8, // 1
	From22 = 22_u8, // ,
	From23 = 23_u8, // 6
	From24 = 24_u8, // 1
	From25 = 25_u8, // 5
}

impl NiceU64Idx {
	/// # Digit Indices (Reverse Order).
	const DIGITS: [Self; 20] = [
		Self::From25, Self::From24, Self::From23, // ,
		Self::From21, Self::From20, Self::From19, // ,
		Self::From17, Self::From16, Self::From15, // ,
		Self::From13, Self::From12, Self::From11, // ,
		Self::From09, Self::From08, Self::From07, // ,
		Self::From05, Self::From04, Self::From03, // ,
		Self::From01, Self::From00,
	];

	/// # Last.
	const LAST: Self = Self::From25;

	/// # Length.
	const LEN: usize = 26;
}



nice_uint! {
	@full
	NiceU64, NiceU64Idx,
	u64, NonZeroU64,
	[ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ],
	[ 1 8 4 4 6 7 4 4 0 7 3 7 0 9 5 5 1 6 1 5 ]
}



// Usize is handled by this type to keep things easy.
impl From<usize> for NiceU64 {
	#[inline]
	fn from(src: usize) -> Self { Self::from(src as u64) }
}

impl From<Option<usize>> for NiceU64 {
	#[inline]
	fn from(src: Option<usize>) -> Self {
		src.map_or(Self::MIN, |src| Self::from(src as u64))
	}
}

impl From<NonZeroUsize> for NiceU64 {
	#[inline]
	fn from(src: NonZeroUsize) -> Self { Self::from(src.get() as u64) }
}

impl From<Option<NonZeroUsize>> for NiceU64 {
	#[inline]
	fn from(src: Option<NonZeroUsize>) -> Self {
		src.map_or(Self::MIN, |src| Self::from(src.get() as u64))
	}
}



#[cfg(test)]
mod tests {
	use super::*;

	super::super::nice_test!(NiceU64, u64);

	#[test]
	fn t_nice_usize() {
		use num_format::{ToFormattedString, Locale};

		// This just forwards to the u64 impl, so all we really need to do
		// is check the min and max come out as expected.
		assert_eq!(
			NiceU64::from(usize::MIN).as_str(),
			usize::MIN.to_formatted_string(&Locale::en),
		);
		assert_eq!(
			NiceU64::from(usize::MAX).as_str(),
			usize::MAX.to_formatted_string(&Locale::en),
		);
	}
}