2020-01-04 19:37:57 -06:00
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use rustc_hir as hir;
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use rustc_hir::itemlikevisit::ItemLikeVisitor;
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2020-03-29 10:19:48 -05:00
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use rustc_middle::middle::cstore::ForeignModule;
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use rustc_middle::ty::TyCtxt;
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2018-02-10 16:28:17 -06:00
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2019-10-06 06:30:46 -05:00
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crate fn collect(tcx: TyCtxt<'_>) -> Vec<ForeignModule> {
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2019-12-22 16:42:04 -06:00
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let mut collector = Collector { tcx, modules: Vec::new() };
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2018-12-04 06:45:36 -06:00
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tcx.hir().krate().visit_all_item_likes(&mut collector);
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2020-03-20 09:03:11 -05:00
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collector.modules
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2018-02-10 16:28:17 -06:00
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}
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2019-06-11 14:03:44 -05:00
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struct Collector<'tcx> {
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2019-06-13 16:48:52 -05:00
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tcx: TyCtxt<'tcx>,
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2018-02-10 16:28:17 -06:00
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modules: Vec<ForeignModule>,
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}
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2019-06-11 14:03:44 -05:00
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impl ItemLikeVisitor<'tcx> for Collector<'tcx> {
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2019-11-28 12:28:50 -06:00
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fn visit_item(&mut self, it: &'tcx hir::Item<'tcx>) {
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2020-11-11 15:40:09 -06:00
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let items = match it.kind {
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hir::ItemKind::ForeignMod { items, .. } => items,
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2018-02-10 16:28:17 -06:00
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_ => return,
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};
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2020-11-11 15:40:09 -06:00
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let foreign_items =
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items.iter().map(|it| self.tcx.hir().local_def_id(it.id.hir_id).to_def_id()).collect();
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2020-04-09 03:43:00 -05:00
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self.modules.push(ForeignModule {
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foreign_items,
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def_id: self.tcx.hir().local_def_id(it.hir_id).to_def_id(),
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});
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2018-02-10 16:28:17 -06:00
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}
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2019-11-28 14:47:10 -06:00
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fn visit_trait_item(&mut self, _it: &'tcx hir::TraitItem<'tcx>) {}
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2019-11-28 15:16:44 -06:00
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fn visit_impl_item(&mut self, _it: &'tcx hir::ImplItem<'tcx>) {}
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2020-11-11 14:57:54 -06:00
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fn visit_foreign_item(&mut self, _it: &'tcx hir::ForeignItem<'tcx>) {}
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2018-02-10 16:28:17 -06:00
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}
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