ps-uuid 0.1.0-4

An opinionated UUID implementation.
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

//! Type conversion trait implementations for UUID.
//!
//! Provides implementations for:
//! - [`ToPrimitive`] - Fallible conversion to primitive types
//! - [`FromPrimitive`] - Fallible conversion from primitive types
//! - [`NumCast`] - Generic numeric casting
//! - [`AsPrimitive`] - Unchecked casting with `as` semantics

use num_traits::{AsPrimitive, FromPrimitive, ToPrimitive};

use crate::UUID;

// ============================================================================
// ToPrimitive - Convert UUID to primitive types
// ============================================================================

impl ToPrimitive for UUID {
    #[inline]
    fn to_i64(&self) -> Option<i64> {
        self.to_u128().to_i64()
    }

    #[inline]
    fn to_i128(&self) -> Option<i128> {
        self.to_u128().to_i128()
    }

    #[inline]
    fn to_u64(&self) -> Option<u64> {
        self.to_u128().to_u64()
    }

    #[inline]
    fn to_u128(&self) -> Option<u128> {
        Some(self.to_u128())
    }

    #[inline]
    fn to_f32(&self) -> Option<f32> {
        self.to_u128().to_f32()
    }

    #[inline]
    fn to_f64(&self) -> Option<f64> {
        self.to_u128().to_f64()
    }
}

// ============================================================================
// FromPrimitive - Convert primitive types to UUID
// ============================================================================

impl FromPrimitive for UUID {
    #[inline]
    fn from_i64(n: i64) -> Option<Self> {
        <u128 as FromPrimitive>::from_i64(n).map(Self::from_u128)
    }

    #[inline]
    fn from_i128(n: i128) -> Option<Self> {
        <u128 as FromPrimitive>::from_i128(n).map(Self::from_u128)
    }

    #[inline]
    fn from_u64(n: u64) -> Option<Self> {
        Some(Self::from_u128(u128::from(n)))
    }

    #[inline]
    fn from_u128(n: u128) -> Option<Self> {
        Some(Self::from_u128(n))
    }

    #[inline]
    fn from_f32(n: f32) -> Option<Self> {
        <u128 as FromPrimitive>::from_f32(n).map(Self::from_u128)
    }

    #[inline]
    fn from_f64(n: f64) -> Option<Self> {
        <u128 as FromPrimitive>::from_f64(n).map(Self::from_u128)
    }
}

// ============================================================================
// NumCast - Generic numeric casting
// ============================================================================

impl num_traits::NumCast for UUID {
    #[inline]
    fn from<T: ToPrimitive>(n: T) -> Option<Self> {
        n.to_u128().map(Self::from_u128)
    }
}

// ============================================================================
// AsPrimitive - Unchecked casting with `as` semantics
// ============================================================================

macro_rules! impl_as_primitive_for_uuid {
    ($($target:ty),* $(,)?) => {
        $(
            impl AsPrimitive<$target> for UUID {
                #[inline]
                #[allow(
                    clippy::cast_possible_truncation,
                    clippy::cast_possible_wrap,
                    clippy::cast_precision_loss
                )]
                fn as_(self) -> $target {
                    self.to_u128() as $target
                }
            }
        )*
    };
}

impl_as_primitive_for_uuid!(u8, u16, u32, u64, u128, usize);
impl_as_primitive_for_uuid!(i8, i16, i32, i64, i128, isize);
impl_as_primitive_for_uuid!(f32, f64);

impl AsPrimitive<Self> for UUID {
    #[inline]
    fn as_(self) -> Self {
        self
    }
}