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
pub trait Primitive {
type Raw;
fn get(raw: &Self::Raw) -> Self;
fn set(raw: &mut Self::Raw, value: Self);
}
#[cfg(feature = "unaligned")]
macro_rules! primitive_impl(
($typ:ty, $n:expr) => (
impl Primitive for $typ {
type Raw = [u8; $n];
#[inline]
fn get(raw: &Self::Raw) -> Self {
<$typ>::from_le_bytes(*raw)
}
#[inline]
fn set(raw: &mut Self::Raw, value: Self) {
*raw = value.to_le_bytes();
}
}
);
);
#[cfg(not(feature = "unaligned"))]
macro_rules! primitive_impl(
($typ:ty, $n:expr) => (
impl Primitive for $typ {
type Raw = $typ;
#[inline]
fn get(raw: &Self::Raw) -> Self {
raw.to_le()
}
#[inline]
fn set(raw: &mut Self::Raw, value: Self) {
*raw = value.to_le()
}
}
);
);
primitive_impl!(u8, 1);
primitive_impl!(i8, 1);
primitive_impl!(u16, 2);
primitive_impl!(i16, 2);
primitive_impl!(u32, 4);
primitive_impl!(i32, 4);
primitive_impl!(u64, 8);
primitive_impl!(i64, 8);
#[cfg(feature = "unaligned")]
primitive_impl!(f32, 4);
#[cfg(feature = "unaligned")]
primitive_impl!(f64, 8);
#[cfg(not(feature = "unaligned"))]
impl Primitive for f32 {
type Raw = f32;
fn get(raw: &Self::Raw) -> Self {
f32::from_bits(raw.to_bits().to_le())
}
fn set(raw: &mut Self::Raw, value: Self) {
*raw = f32::from_bits(value.to_bits().to_le())
}
}
#[cfg(not(feature = "unaligned"))]
impl Primitive for f64 {
type Raw = f64;
fn get(raw: &Self::Raw) -> Self {
f64::from_bits(raw.to_bits().to_le())
}
fn set(raw: &mut Self::Raw, value: Self) {
*raw = f64::from_bits(value.to_bits().to_le())
}
}
#[repr(C)]
pub struct WireValue<T> where T: Primitive {
value: <T as Primitive>::Raw,
}
impl<T> WireValue<T> where T: Primitive {
#[inline]
pub fn get(&self) -> T { <T as Primitive>::get(&self.value) }
#[inline]
pub fn set(&mut self, value: T) { <T as Primitive>::set(&mut self.value, value) }
}