An embeddable dynamic programming language for Rust.
If you want to help out, there should be a number of optimization tasks available in Future Optimizations. Or have a look at Open Issues.
Create an issue about the optimization you want to work on and communicate that you are working on it.
- Clean Rust integration 💻.
- Memory safe through reference counting 📖.
- Template literals 📖.
- Try operators 📖.
- Pattern matching 📖.
- Structs and enums 📖 with associated data and functions.
- Dynamic vectors 📖, objects 📖, and tuples 📖 with built-in serde support 💻.
- First-class async support 📖.
- Generators 📖.
- Dynamic instance functions 📖.
- Stack isolation 📖 between function calls.
- Stack-based C FFI, like Lua's (TBD).
You can run Rune programs with the bundled CLI:
cargo run --bin rune -- run scripts/hello_world.rn
If you want to see detailed diagnostics of your program while it's running, you can use:
cargo run --bin rune -- run scripts/hello_world.rn --dump-unit --trace --dump-vm
See --help for more information.
You can find more examples in the
examplesfolder.
The following is a complete example, including rich diagnostics using
termcolor. It can be made much simpler if this is not needed.
use rune::termcolor::{ColorChoice, StandardStream};
use rune::EmitDiagnostics as _;
use runestick::{Vm, FromValue as _, Item, Source};
use std::error::Error;
use std::sync::Arc;
#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
let context = runestick::Context::with_default_modules()?;
let options = rune::Options::default();
let mut sources = rune::Sources::new();
sources.insert(Source::new(
"script",
r#"
pub fn calculate(a, b) {
println("Hello World");
a + b
}
"#,
));
let mut diagnostics = rune::Diagnostics::new();
let result = rune::load_sources(&context, &options, &mut sources, &mut diagnostics);
if !diagnostics.is_empty() {
let mut writer = StandardStream::stderr(ColorChoice::Always);
diagnostics.emit_diagnostics(&mut writer, &sources)?;
}
let unit = result?;
let vm = Vm::new(Arc::new(context.runtime()), Arc::new(unit));
let mut execution = vm.execute(&["calculate"], (10i64, 20i64))?;
let value = execution.async_complete().await?;
let value = i64::from_value(value)?;
println!("{}", value);
Ok(())
}