fn consolidate_crate_specs()

in tools/rust_analyzer/aquery.rs [165:196]

• 22 lines of code
• 6 McCabe index (conditional complexity)

fn consolidate_crate_specs(crate_specs: Vec<CrateSpec>) -> anyhow::Result<BTreeSet<CrateSpec>> {
    let mut consolidated_specs: BTreeMap<String, CrateSpec> = BTreeMap::new();
    for spec in crate_specs.into_iter() {
        log::debug!("{:?}", spec);
        if let Some(existing) = consolidated_specs.get_mut(&spec.crate_id) {
            existing.deps.extend(spec.deps);

            // display_name should match the library's crate name because Rust Analyzer
            // seems to use display_name for matching crate entries in rust-project.json
            // against symbols in source files. For more details, see
            // https://github.com/bazelbuild/rules_rust/issues/1032
            if spec.crate_type == "rlib" {
                existing.display_name = spec.display_name;
                existing.crate_type = "rlib".into();
            }

            // For proc-macro crates that exist within the workspace, there will be a
            // generated crate-spec in both the fastbuild and opt-exec configuration.
            // Prefer proc macro paths with an opt-exec component in the path.
            if let Some(dylib_path) = spec.proc_macro_dylib_path.as_ref() {
                const OPT_PATH_COMPONENT: &str = "-opt-exec-";
                if dylib_path.contains(OPT_PATH_COMPONENT) {
                    existing.proc_macro_dylib_path.replace(dylib_path.clone());
                }
            }
        } else {
            consolidated_specs.insert(spec.crate_id.clone(), spec);
        }
    }

    Ok(consolidated_specs.into_values().collect())
}