Rollup merge of #89468 - FabianWolff:issue-89358, r=jackh726

[rust.git] / compiler / rustc_lint / src / builtin.rs

diff --git a/compiler/rustc_lint/src/builtin.rs b/compiler/rustc_lint/src/builtin.rs
index 57c1c8f3ecb5c28f033a29389fdf00edd74291f7..c228ecb03fdec25f1d475fd9d9a2ef63ce0c6f0e 100644 (file)
--- a/compiler/rustc_lint/src/builtin.rs
+++ b/compiler/rustc_lint/src/builtin.rs
@@ -657,6 +657,24 @@ fn check_impl_item(&mut self, cx: &LateContext<'_>, impl_item: &hir::ImplItem<'_
             return;
         }
 
+        // If the method is an impl for an item with docs_hidden, don't doc.
+        if method_context(cx, impl_item.hir_id()) == MethodLateContext::PlainImpl {
+            let parent = cx.tcx.hir().get_parent_did(impl_item.hir_id());
+            let impl_ty = cx.tcx.type_of(parent);
+            let outerdef = match impl_ty.kind() {
+                ty::Adt(def, _) => Some(def.did),
+                ty::Foreign(def_id) => Some(*def_id),
+                _ => None,
+            };
+            let is_hidden = match outerdef {
+                Some(id) => cx.tcx.is_doc_hidden(id),
+                None => false,
+            };
+            if is_hidden {
+                return;
+            }
+        }
+
         let (article, desc) = cx.tcx.article_and_description(impl_item.def_id.to_def_id());
         self.check_missing_docs_attrs(cx, impl_item.def_id, impl_item.span, article, desc);
     }