2 use rustc::hir::itemlikevisit::ItemLikeVisitor;
4 use syntax::symbol::sym;
6 pub fn test_inferred_outlives(tcx: TyCtxt<'_>) {
9 .visit_all_item_likes(&mut OutlivesTest { tcx });
12 struct OutlivesTest<'tcx> {
16 impl ItemLikeVisitor<'tcx> for OutlivesTest<'tcx> {
17 fn visit_item(&mut self, item: &'tcx hir::Item) {
18 let item_def_id = self.tcx.hir().local_def_id_from_hir_id(item.hir_id);
20 // For unit testing: check for a special "rustc_outlives"
21 // attribute and report an error with various results if found.
22 if self.tcx.has_attr(item_def_id, sym::rustc_outlives) {
23 let inferred_outlives_of = self.tcx.inferred_outlives_of(item_def_id);
34 fn visit_trait_item(&mut self, _: &'tcx hir::TraitItem) {}
35 fn visit_impl_item(&mut self, _: &'tcx hir::ImplItem) {}