stak-device 0.12.17

Devices for Stak Scheme
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

use crate::{Device, ReadWriteDevice};
use std::io::{Error, Stderr, Stdin, Stdout, stderr, stdin, stdout};
use winter_maybe_async::{maybe_async, maybe_await};

/// A standard I/O device of a current process.
#[derive(Debug)]
pub struct StdioDevice {
    device: ReadWriteDevice<Stdin, Stdout, Stderr>,
}

impl StdioDevice {
    /// Creates a device.
    pub fn new() -> Self {
        Self {
            device: ReadWriteDevice::new(stdin(), stdout(), stderr()),
        }
    }
}

impl Device for StdioDevice {
    type Error = Error;

    #[maybe_async]
    fn read(&mut self) -> Result<Option<u8>, Self::Error> {
        maybe_await!(self.device.read())
    }

    #[maybe_async]
    fn write(&mut self, byte: u8) -> Result<(), Self::Error> {
        maybe_await!(self.device.write(byte))
    }

    #[maybe_async]
    fn write_error(&mut self, byte: u8) -> Result<(), Self::Error> {
        maybe_await!(self.device.write_error(byte))
    }
}

impl Default for StdioDevice {
    fn default() -> Self {
        Self::new()
    }
}