Function build_script_from_lines

tools/streamline.rs:168–178

(lines: &[String])

}

fn build_script_from_lines(lines: &[String]) -> eyre::Result<rune::Sources> {
    let mut sources = rune::Sources::new();
    let mut all_lines = vec!["pub fn eval_field(x, y) {".to_string()];
    all_lines.extend_from_slice(lines);
    all_lines.push("return (x_new, y_new); }".to_string());

    let script = all_lines.join("\n");
    let source = rune::Source::memory(script)?;
    sources.insert(source)?;
    Ok(sources)
}

struct VectorField {
    function: VectorFieldFunction,