Function leaf_deps

crates/spirv-builder/src/lib.rs:795–818

Internally iterate through the leaf dependencies of the artifact at `artifact`

(artifact: &Path, mut handle: impl FnMut(&RawStr))

/// Internally iterate through the leaf dependencies of the artifact at `artifact`
fn leaf_deps(artifact: &Path, mut handle: impl FnMut(&RawStr)) -> std::io::Result<()> {
    let deps_file = artifact.with_extension("d");
    let mut deps_map = HashMap::new();
    depfile::read_deps_file(&deps_file, |item, deps| {
        deps_map.insert(item, deps);
        Ok(())
    })?;
    fn recurse(
        map: &HashMap<RawString, Vec<RawString>>,
        artifact: &RawStr,
        handle: &mut impl FnMut(&RawStr),
    ) {
        match map.get(artifact) {
            Some(entries) => {
                for entry in entries {
                    recurse(map, entry, handle);
                }
            }
            None => handle(artifact),
        }
    }
    recurse(&deps_map, artifact.to_str().unwrap().into(), &mut handle);
    Ok(())
}