use rustc_data_structures::fx::FxIndexMap;
use rustc_hir as hir;
use rustc_hir::def::DefKind;
use rustc_hir::def_id::DefId;
use rustc_middle::query::LocalCrate;
use rustc_middle::ty::TyCtxt;
use rustc_session::cstore::ForeignModule;
pub(crate) fn collect(tcx: TyCtxt<'_>, LocalCrate: LocalCrate) -> FxIndexMap<DefId, ForeignModule> {
let mut modules = FxIndexMap::default();
for id in tcx.hir().items() {
if !matches!(tcx.def_kind(id.owner_id), DefKind::ForeignMod) {
continue;
}
let def_id = id.owner_id.to_def_id();
let item = tcx.hir().item(id);
if let hir::ItemKind::ForeignMod { abi, items } = item.kind {
let foreign_items = items.iter().map(|it| it.id.owner_id.to_def_id()).collect();
modules.insert(def_id, ForeignModule { def_id, abi, foreign_items });
}
}
modules
}