xio_common 0.5.0

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

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

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

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

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

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

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