Crate felys

source ·
Expand description

Interface to customize Felys implementation

§Examples

Make sure felys is added to your cargo.toml, and then try it out:

use std::collections::HashMap;

use felys::*;

fn main() {
    let code = "print('Hello, World');".to_string();

    // your customized built-in values and rust functions
    let mixin = HashMap::from([
        ("print".into(), Object::Rust { func: print })
    ]);

    // init the worker with mixin, set to no timeout and English mode
    let mut main = Worker::new(mixin, 0.0, Language::EN);
    if let Err(e) = main.exec(code) {
        println!("{}", e)
    }
}

// customize your own `print` function
fn print(cx: &mut Context) -> Output {
    let out = cx.args.iter()
        .map(|o| o.to_string())
        .collect::<Vec<String>>()
        .join(" ");
    println!("{}", out);
    Object::None.into()
}

Structs§

  • Context
    Abstraction of interaction with runtime environment
  • Output
    Abstraction of return value from a rust function
  • Summary
    Relevant outputs after one execution
  • Worker
    Core interpreter entry point

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