packed_struct 0.10.1

Binary-level structure packing and unpacking generator
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

use super::packing::*;

impl PackedStruct for bool {
    type ByteArray = [u8; 1];

    #[inline]
    fn pack(&self) -> PackingResult<[u8; 1]> {
        Ok(if *self { [1] } else { [0] })
    }

    #[inline]
    fn unpack(src: &[u8; 1]) -> Result<bool, PackingError> {
        match src[0] {
            1 => Ok(true),
            0 => Ok(false),
            _ => Err(PackingError::InvalidValue)
        }
    }
}

impl PackedStructInfo for bool {
    #[inline]
    fn packed_bits() -> usize {
        1
    }
}


impl PackedStruct for u8 {
    type ByteArray = [u8; 1];

    #[inline]
    fn pack(&self) -> PackingResult<[u8; 1]> {
        Ok([*self])
    }

    #[inline]
    fn unpack(src: &[u8; 1]) -> Result<u8, PackingError> {
        Ok(src[0])
    }
}

impl PackedStructInfo for u8 {
    #[inline]
    fn packed_bits() -> usize {
        8
    }
}


impl PackedStruct for i8 {
    type ByteArray = [u8; 1];

    #[inline]
    fn pack(&self) -> PackingResult<Self::ByteArray> {
        Ok([*self as u8])
    }

    #[inline]
    fn unpack(src: &Self::ByteArray) -> Result<i8, PackingError> {
        Ok(src[0] as i8)
    }
}

impl PackedStructInfo for i8 {
    #[inline]
    fn packed_bits() -> usize {
        8
    }
}


impl PackedStruct for () {
    type ByteArray = [u8; 0];

    #[inline]
    fn pack(&self) -> PackingResult<[u8; 0]> {
        Ok([])
    }

    #[inline]
    fn unpack(_src: &[u8; 0]) -> Result<(), PackingError> {
        Ok(())
    }
}

impl PackedStructInfo for () {
    #[inline]
    fn packed_bits() -> usize {
        0
    }
}