mlua-periphery 1.2.4

A Rust-native implementation of lua-periphery for mlua.
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use super::Gpio;
use gpio_cdev::LineEvent;
use mlua::{Error, Lua, MultiValue};

pub(super) fn handle(_lua: &Lua, gpio: &Gpio, _arg: MultiValue) -> Result<LineEvent, Error> {
    // Lock and use the line event handle
    let mut line_events_guard = gpio
        .line_events
        .lock()
        .map_err(|err| Error::RuntimeError(err.to_string()))?;

    // Get the next event
    let event = match line_events_guard.as_mut() {
        None => return Err(Error::RuntimeError("Failed accessling line".to_string())),
        Some(line_event) => line_event
            .get_event()
            .map_err(|err| Error::RuntimeError(err.to_string()))?,
    };
    Ok(event)
}