Function build_dynamical_system_function_from_args

tools/attractor.rs:124–152

(
    args: &CmdlineOptions,
)

}

fn build_dynamical_system_function_from_args(
    args: &CmdlineOptions,
) -> eyre::Result<DynamicalSystemFn> {
    let context = rune::Context::with_default_modules()?;
    let runtime = rune::sync::Arc::try_new(context.runtime()?)?;
    let mut script = rune::Sources::new();
    script.insert(build_rune_script(args)?)?;
    let mut diagnostics = rune::Diagnostics::new();
    let maybe_unit = rune::prepare(&mut script)
        .with_context(&context)
        .with_diagnostics(&mut diagnostics)
        .build();
    if !diagnostics.is_empty() {
        let mut writer =
            rune::termcolor::StandardStream::stderr(rune::termcolor::ColorChoice::Always);
        diagnostics.emit(&mut writer, &script)?;
    }
    let unit = rune::sync::Arc::try_new(maybe_unit?)?;

    // the Vm is captured and retains state between calls
    let vm = rune::Vm::new(runtime, unit);
    let iterate = vm.lookup_function(["iterate"])?;
    let closure = move |x: f64, y: f64| -> (f64, f64) {
        iterate
            .call((x, y))
            .expect("Failed to call iterate function")
    };
    Ok(Box::new(closure))
}

fn params_from_letters(letters: &str) -> eyre::Result<Vec<String>> {
    let mut params = Vec::new();