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https://github.com/lune-org/mlua-luau-scheduler.git
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82 lines
2.2 KiB
Markdown
82 lines
2.2 KiB
Markdown
<!-- markdownlint-disable MD033 -->
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<!-- markdownlint-disable MD041 -->
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<h1 align="center">smol-mlua</h1>
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<div align="center">
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<div>
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<a href="https://github.com/lune-org/smol-mlua/actions">
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<img src="https://shields.io/endpoint?url=https://badges.readysetplay.io/workflow/lune-org/smol-mlua/ci.yaml" alt="CI status" />
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</a>
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<a href="https://github.com/lune-org/smol-mlua/blob/main/LICENSE.txt">
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<img src="https://img.shields.io/github/license/lune-org/smol-mlua.svg?label=License&color=informational" alt="Crate license" />
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</a>
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</div>
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</div>
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<br/>
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Integration between [smol](https://crates.io/crates/smol) and [mlua](https://crates.io/crates/mlua) that provides a fully functional and asynchronous Luau runtime using smol executor(s).
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## Example Usage
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### 1. Import dependencies
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```rs
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use std::time::{Duration, Instant};
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use smol_mlua::{
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mlua::prelude::*,
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smol::{Timer, io, fs::read_to_string},
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Runtime,
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};
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```
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### 2. Set up lua environment
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```rs
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let lua = Lua::new();
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lua.globals().set(
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"sleep",
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lua.create_async_function(|_, duration: f64| async move {
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let before = Instant::now();
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let after = Timer::after(Duration::from_secs_f64(duration)).await;
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Ok((after - before).as_secs_f64())
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})?,
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)?;
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lua.globals().set(
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"readFile",
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lua.create_async_function(|lua, path: String| async move {
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// Spawn background task that does not take up resources on the lua thread
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// Normally, futures in mlua can not be shared across threads, but this can
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let task = lua.spawn(async move {
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match read_to_string(path).await {
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Ok(s) => Ok(Some(s)),
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Err(e) if e.kind() == io::ErrorKind::NotFound => Ok(None),
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Err(e) => Err(e),
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}
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});
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task.await.into_lua_err()
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})?,
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)?;
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```
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### 3. Run
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```rs
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let rt = Runtime::new(&lua)?;
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// We can create multiple lua threads
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let sleepThread = lua.load("sleep(0.1)");
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let fileThread = lua.load("readFile(\"Cargo.toml\")");
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// Put them all into the runtime
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rt.push_thread(sleepThread, ());
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rt.push_thread(fileThread, ());
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// And run either async or blocking, until above threads finish
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rt.run_async().await;
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rt.run_blocking();
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```
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