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//! <div align="center"> //! <a href="https://rune-rs.github.io/rune/"> //! <b>Read the Book 📖</b> //! </a> //! </div> //! //! <br> //! //! <div align="center"> //! <a href="https://github.com/rune-rs/rune/actions"> //! <img alt="Build Status" src="https://github.com/rune-rs/rune/workflows/Build/badge.svg"> //! </a> //! //! <a href="https://github.com/rune-rs/rune/actions"> //! <img alt="Book Status" src="https://github.com/rune-rs/rune/workflows/Book/badge.svg"> //! </a> //! //! <a href="https://crates.io/crates/rune"> //! <img alt="crates.io" src="https://img.shields.io/crates/v/rune.svg"> //! </a> //! //! <a href="https://docs.rs/rune"> //! <img alt="docs.rs" src="https://docs.rs/rune/badge.svg"> //! </a> //! //! <a href="https://discord.gg/v5AeNkT"> //! <img alt="Chat on Discord" src="https://img.shields.io/discord/558644981137670144.svg?logo=discord&style=flat-square"> //! </a> //! </div> //! //! <br> //! //! An embeddable dynamic programming language for Rust. //! //! ## Contributing //! //! If you want to help out, there should be a number of optimization tasks //! available in [Future Optimizations][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. //! //! <br> //! //! ## Highlights of Rune //! //! * Clean [Rust integration 💻][support-rust-integration]. //! * Memory safe through [reference counting 📖][support-reference-counted]. //! * [Template strings 📖][support-templates]. //! * [Try operators 📖][support-try]. //! * [Pattern matching 📖][support-patterns]. //! * [Structs and enums 📖][support-structs] with associated data and functions. //! * Dynamic [vectors 📖][support-dynamic-vectors], [objects 📖][support-anon-objects], and [tuples 📖][support-anon-tuples] with built-in [serde support 💻][support-serde]. //! * First-class [async support 📖][support-async]. //! * [Generators 📖][support-generators]. //! * Dynamic [instance functions 📖][support-instance-functions]. //! * [Stack isolation 📖][support-stack-isolation] between function calls. //! * Stack-based C FFI, like Lua's (TBD). //! //! <br> //! //! ## Rune scripts //! //! You can run Rune programs with the bundled CLI: //! //! ```text //! cargo run -- scripts/hello_world.rn //! ``` //! //! If you want to see detailed diagnostics of your program while it's running, //! you can use: //! //! ```text //! cargo run -- scripts/hello_world.rn --dump-unit --trace --dump-vm //! ``` //! //! See `--help` for more information. //! //! ## Running scripts from Rust //! //! > You can find more examples [in the `examples` folder]. //! //! The following is a complete example, including rich diagnostics using //! [`termcolor`]. It can be made much simpler if this is not needed. //! //! [`termcolor`]: https://docs.rs/termcolor //! //! ```rust //! 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 source = Source::new( //! "script", //! r#" //! fn calculate(a, b) { //! println("Hello World"); //! a + b //! } //! "#, //! ); //! //! let context = Arc::new(rune::default_context()?); //! let options = rune::Options::default(); //! let mut warnings = rune::Warnings::new(); //! //! let unit = match rune::load_source(&*context, &options, source, &mut warnings) { //! Ok(unit) => unit, //! Err(error) => { //! let mut writer = StandardStream::stderr(ColorChoice::Always); //! error.emit_diagnostics(&mut writer)?; //! return Ok(()); //! } //! }; //! //! if !warnings.is_empty() { //! let mut writer = StandardStream::stderr(ColorChoice::Always); //! rune::emit_warning_diagnostics(&mut writer, &warnings, &unit)?; //! } //! //! let vm = Vm::new(context.clone(), Arc::new(unit)); //! //! let mut execution = vm.call(&["calculate"], (10i64, 20i64))?; //! let value = execution.async_complete().await?; //! //! let value = i64::from_value(value)?; //! //! println!("{}", value); //! Ok(()) //! } //! ``` //! //! [in the `examples` folder]: https://github.com/rune-rs/rune/tree/master/crates/rune-testing/examples //! [future-optimizations]: https://github.com/rune-rs/rune/blob/master/FUTURE_OPTIMIZATIONS.md //! [Open Issues]: https://github.com/rune-rs/rune/issues //! [support-rust-integration]: https://github.com/rune-rs/rune/tree/master/crates/rune-modules //! [support-reference-counted]: https://rune-rs.github.io/rune/variables.html //! [support-templates]: https://rune-rs.github.io/rune/template_strings.html //! [support-try]: https://rune-rs.github.io/rune/try_operator.html //! [support-patterns]: https://rune-rs.github.io/rune/pattern_matching.html //! [support-structs]: https://rune-rs.github.io/rune/structs.html //! [support-async]: https://rune-rs.github.io/rune/async.html //! [support-generators]: https://rune-rs.github.io/rune/generators.html //! [support-instance-functions]: https://rune-rs.github.io/rune/instance_functions.html //! [support-stack-isolation]: https://rune-rs.github.io/rune/call_frames.html //! [support-dynamic-vectors]: https://rune-rs.github.io/rune/vectors.html //! [support-anon-objects]: https://rune-rs.github.io/rune/objects.html //! [support-anon-tuples]: https://rune-rs.github.io/rune/tuples.html //! [support-serde]: https://github.com/rune-rs/rune/blob/master/crates/rune-modules/src/json.rs #![deny(missing_docs)] pub mod ast; mod compile; mod compiler; #[cfg(feature = "diagnostics")] mod diagnostics; mod error; mod index; mod index_scopes; mod items; mod lexer; mod load; mod load_error; mod loops; mod options; mod parser; mod query; mod scopes; mod traits; mod warning; /// Internal collection re-export. mod collections { pub use hashbrown::{hash_map, HashMap}; pub use hashbrown::{hash_set, HashSet}; } pub use crate::error::{CompileError, ParseError}; pub use crate::lexer::Lexer; pub use crate::load::{load_path, load_source}; pub use crate::load_error::{LoadError, LoadErrorKind}; pub use crate::options::Options; pub use crate::parser::Parser; pub use crate::warning::{Warning, WarningKind, Warnings}; pub use compiler::compile; #[cfg(feature = "diagnostics")] pub use diagnostics::{emit_warning_diagnostics, termcolor, DiagnosticsError, EmitDiagnostics}; /// Construct a a default context runestick context. /// /// If built with the `modules` feature, this includes all available native /// modules. /// /// See [load_path](crate::load_path) for how to use. pub fn default_context() -> Result<runestick::Context, runestick::ContextError> { #[allow(unused_mut)] let mut context = runestick::Context::with_default_modules()?; #[cfg(feature = "modules")] { context.install(&rune_modules::http::module()?)?; context.install(&rune_modules::json::module()?)?; context.install(&rune_modules::toml::module()?)?; context.install(&rune_modules::time::module()?)?; context.install(&rune_modules::process::module()?)?; context.install(&rune_modules::fs::module()?)?; context.install(&rune_modules::signal::module()?)?; } Ok(context) } /// Parse the given input as the given type that implements /// [Parse][crate::traits::Parse]. pub fn parse_all<T>(source: &str) -> Result<T, ParseError> where T: crate::traits::Parse, { let mut parser = Parser::new(source); let ast = parser.parse::<T>()?; if let Some(token) = parser.lexer.next()? { return Err(ParseError::ExpectedEof { actual: token.kind, span: token.span, }); } Ok(ast) }