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

use base::ModuleState;
use byteorder::{ReadBytesExt, WriteBytesExt};
use std::io;
use std::io::{Read, Write};
use {PreliminaryTryFrom, WithFixedPayloadLength};

impl WithFixedPayloadLength for ModuleState {
    const FIXED_PAYLOAD_LENGTH: u16 = u8::FIXED_PAYLOAD_LENGTH;
}

impl PreliminaryTryFrom<u8> for ModuleState {
    type Error = io::Error;
    fn try_from(value: u8) -> io::Result<Self> {
        match value {
            0 => Ok(ModuleState::Uninitialized),
            1 => Ok(ModuleState::Ready),
            2 => Ok(ModuleState::Running),
            3 => Ok(ModuleState::Error),
            _ => Err(io::Error::new(
                io::ErrorKind::InvalidData,
                format!("Invalid ModuleState enum value {}", value),
            )),
        }
    }
}

pub(crate) trait ModuleStateWriterExt: Write {
    fn write_module_state(&mut self, r: &ModuleState) -> io::Result<()> {
        self.write_u8(r.clone() as u8)?;
        Ok(())
    }
}

impl<B: Write + ?Sized> ModuleStateWriterExt for B {}

pub(crate) trait ModuleStateReaderExt: Read {
    fn read_module_state(&mut self) -> io::Result<ModuleState> {
        let value = self.read_u8()?;
        ModuleState::try_from(value)
    }
}

impl<B: Read + ?Sized> ModuleStateReaderExt for B {}