Function render_source_files

build.rs:111–132

(sources: &[SourceFile])

    let mut programs: Vec<Program> = build_files.iter().map(|path| Program::load(path)).collect();
    programs.sort_by(|a, b| (a.kind.rank(), &a.name).cmp(&(b.kind.rank(), &b.name)));

    let programs_dir = manifest_dir.join("programs");
    println!("cargo:rerun-if-changed={}", programs_dir.display());
    let mut source_files = Vec::new();
    collect_source_files(&programs_dir, manifest_dir, &mut source_files);
    source_files.sort_by(|a, b| a.key.cmp(&b.key));

    let mut code = render_userspace(&programs);
    code.push_str(&render_source_files(&source_files));
    fs::write(out_dir.join("userspace.rs"), code).expect("failed to write userspace.rs");
}

// Walk `programs/` for embeddable sources keyed by repo-relative path: every `.hll`,
// plus build and lowering files used by the demo and lesson workspaces.
fn collect_source_files(dir: &Path, manifest_dir: &Path, out: &mut Vec<SourceFile>) {
    let Ok(entries) = fs::read_dir(dir) else {
        return;
    };
    for entry in entries.flatten() {
        let path = entry.path();
        if path.is_dir() {
            if path.file_name().and_then(|name| name.to_str()) == Some("demo_workspace") {
                continue;
            }
            collect_source_files(&path, manifest_dir, out);