xio_common 0.12.0

XIO commonly used functionality
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

extern crate uuid;

use self::uuid::{Bytes, Uuid};
use snafu::ensure;
use std::mem::size_of;
use crate::{error, Result};

pub(crate) trait WithFixedPayloadLength {
    const FIXED_PAYLOAD_LENGTH: u16;

    fn verify_payload_length(
        payload_length: u16,
        message_type: &'static str,
    ) -> Result<()> {
        ensure!(
            payload_length == Self::FIXED_PAYLOAD_LENGTH,
            error::InvalidPayloadLength {
                message_type,
                received: payload_length,
                required: Self::FIXED_PAYLOAD_LENGTH
            }
        );
        Ok(())
    }
}

impl WithFixedPayloadLength for bool {
    const FIXED_PAYLOAD_LENGTH: u16 = size_of::<bool>() as u16;
}

impl WithFixedPayloadLength for i8 {
    const FIXED_PAYLOAD_LENGTH: u16 = size_of::<i8>() as u16;
}

impl WithFixedPayloadLength for i16 {
    const FIXED_PAYLOAD_LENGTH: u16 = size_of::<i16>() as u16;
}

impl WithFixedPayloadLength for i32 {
    const FIXED_PAYLOAD_LENGTH: u16 = size_of::<i32>() as u16;
}

impl WithFixedPayloadLength for i64 {
    const FIXED_PAYLOAD_LENGTH: u16 = size_of::<i64>() as u16;
}

impl WithFixedPayloadLength for u8 {
    const FIXED_PAYLOAD_LENGTH: u16 = size_of::<u8>() as u16;
}

impl WithFixedPayloadLength for u16 {
    const FIXED_PAYLOAD_LENGTH: u16 = size_of::<u16>() as u16;
}

impl WithFixedPayloadLength for u32 {
    const FIXED_PAYLOAD_LENGTH: u16 = size_of::<u32>() as u16;
}

impl WithFixedPayloadLength for u64 {
    const FIXED_PAYLOAD_LENGTH: u16 = size_of::<u64>() as u16;
}

impl WithFixedPayloadLength for Uuid {
    const FIXED_PAYLOAD_LENGTH: u16 = size_of::<Bytes>() as u16;
}

#[cfg(test)]
mod tests {
    use super::{Uuid, WithFixedPayloadLength};
    #[test]
    fn test() {
        assert_eq!(bool::FIXED_PAYLOAD_LENGTH, 1u16);
        assert_eq!(i8::FIXED_PAYLOAD_LENGTH, 1u16);
        assert_eq!(i16::FIXED_PAYLOAD_LENGTH, 2u16);
        assert_eq!(i32::FIXED_PAYLOAD_LENGTH, 4u16);
        assert_eq!(i64::FIXED_PAYLOAD_LENGTH, 8u16);
        assert_eq!(u8::FIXED_PAYLOAD_LENGTH, 1u16);
        assert_eq!(u16::FIXED_PAYLOAD_LENGTH, 2u16);
        assert_eq!(u32::FIXED_PAYLOAD_LENGTH, 4u16);
        assert_eq!(u64::FIXED_PAYLOAD_LENGTH, 8u16);
        assert_eq!(Uuid::FIXED_PAYLOAD_LENGTH, 16u16);
    }
}