const_struct 0.6.4

macro that allows const structures to be passed as const generics
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

pub mod primitive_ty;
pub use primitive_ty::*;
pub mod option;
pub use option::*;
pub mod tuple;
pub use tuple::*;
pub mod unit;
pub use unit::*;
// pub mod enum_ty;
// pub use enum_ty::*;
// pub mod struct_ty;
// pub use struct_ty::*;
// pub mod array;

pub trait PrimitiveTraits {
    type DATATYPE;
    const __DATA: Self::DATATYPE;
}

pub struct HashBridge<
    const NAME_HASH: u64,
    const FILE_NAME_HASH: u64,
    const COLUMN: u32,
    const LINE: u32,
    U,
> {
    __phantom: core::marker::PhantomData<U>,
}

impl<const NAME_HASH: u64, const FILE_NAME_HASH: u64, const COLUMN: u32, const LINE: u32, U> Default
    for HashBridge<NAME_HASH, FILE_NAME_HASH, COLUMN, LINE, U>
{
    fn default() -> Self {
        Self {
            __phantom: core::marker::PhantomData,
        }
    }
}

impl<const NAME_HASH: u64, const FILE_NAME_HASH: u64, const COLUMN: u32, const LINE: u32, U>
    HashBridge<NAME_HASH, FILE_NAME_HASH, COLUMN, LINE, U>
{
    pub const fn new() -> Self {
        Self {
            __phantom: core::marker::PhantomData,
        }
    }
}

// Debug
impl<const NAME_HASH: u64, const FILE_NAME_HASH: u64, const COLUMN: u32, const LINE: u32, U>
    core::fmt::Debug for HashBridge<NAME_HASH, FILE_NAME_HASH, COLUMN, LINE, U>
{
    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
        f.debug_struct("HashBridge")
            .field("NAME_HASH", &NAME_HASH)
            .field("FILE_NAME_HASH", &FILE_NAME_HASH)
            .field("COLUMN", &COLUMN)
            .field("LINE", &LINE)
            .field("U", &core::any::type_name::<U>())
            .finish()
    }
}

pub const fn str_hash(s: &str) -> u64 {
    let crc: crc::Crc<u64> = crc::Crc::<u64>::new(&crc::CRC_64_ECMA_182);
    crc.checksum(s.as_bytes())
}

pub trait HashBridgeBridge<
    const NAME_HASH: u64,
    const FILE_NAME_HASH: u64,
    const COLUMN: u32,
    const LINE: u32,
>
{
    type DATATYPE;
    const DATA: Self::DATATYPE;
}

impl<
        U: HashBridgeBridge<NAME_HASH, FILE_NAME_HASH, COLUMN, LINE>,
        const NAME_HASH: u64,
        const FILE_NAME_HASH: u64,
        const COLUMN: u32,
        const LINE: u32,
    > PrimitiveTraits for HashBridge<NAME_HASH, FILE_NAME_HASH, COLUMN, LINE, U>
{
    type DATATYPE = U::DATATYPE;
    const __DATA: Self::DATATYPE = U::DATA;
}