Improve code to remove duplication

Author: GuillaumeGomez

src/librustdoc/clean/mod.rs

@@ -119,14 +119,25 @@ pub(crate) fn clean_doc_module<'tcx>(doc: &DocModule<'tcx>, cx: &mut DocContext<
     });
 
     let kind = ModuleItem(Module { items, span });
-    let def_id = doc.def_id.to_def_id();
+    generate_item_with_correct_attrs(cx, kind, doc.def_id, doc.name, doc.import_id, doc.renamed)
+}
+
+fn generate_item_with_correct_attrs(
+    cx: &mut DocContext<'_>,
+    kind: ItemKind,
+    local_def_id: LocalDefId,
+    name: Symbol,
+    import_id: Option<LocalDefId>,
+    renamed: Option<Symbol>,
+) -> Item {
+    let def_id = local_def_id.to_def_id();
     let target_attrs = inline::load_attrs(cx, def_id);
-    let attrs = if let Some(import_id) = doc.import_id {
+    let attrs = if let Some(import_id) = import_id {
         let is_inline = inline::load_attrs(cx, import_id.to_def_id())
             .lists(sym::doc)
             .get_word_attr(sym::inline)
             .is_some();
-        let mut attrs = get_all_import_attributes(cx, import_id, doc.def_id, is_inline);
+        let mut attrs = get_all_import_attributes(cx, import_id, local_def_id, is_inline);
         add_without_unwanted_attributes(&mut attrs, target_attrs, is_inline, None);
         attrs
     } else {
@@ -137,9 +148,9 @@ pub(crate) fn clean_doc_module<'tcx>(doc: &DocModule<'tcx>, cx: &mut DocContext<
     let cfg = attrs.cfg(cx.tcx, &cx.cache.hidden_cfg);
     let attrs = Attributes::from_ast_iter(attrs.iter().map(|(attr, did)| (&**attr, *did)), false);
 
-    let name = doc.renamed.or_else(|| Some(doc.name));
+    let name = renamed.or(Some(name));
     let mut item = Item::from_def_id_and_attrs_and_parts(def_id, name, kind, Box::new(attrs), cfg);
-    item.inline_stmt_id = doc.import_id.map(|local| local.to_def_id());
+    item.inline_stmt_id = import_id.map(|local| local.to_def_id());
     item
 }
 
@@ -2309,29 +2320,14 @@ fn clean_maybe_renamed_item<'tcx>(
             _ => unreachable!("not yet converted"),
         };
 
-        let target_attrs = inline::load_attrs(cx, def_id);
-        let attrs = if let Some(import_id) = import_id {
-            let is_inline = inline::load_attrs(cx, import_id.to_def_id())
-                .lists(sym::doc)
-                .get_word_attr(sym::inline)
-                .is_some();
-            let mut attrs =
-                get_all_import_attributes(cx, import_id, item.owner_id.def_id, is_inline);
-            add_without_unwanted_attributes(&mut attrs, target_attrs, is_inline, None);
-            attrs
-        } else {
-            // We only keep the item's attributes.
-            target_attrs.iter().map(|attr| (Cow::Borrowed(attr), None)).collect()
-        };
-
-        let cfg = attrs.cfg(cx.tcx, &cx.cache.hidden_cfg);
-        let attrs =
-            Attributes::from_ast_iter(attrs.iter().map(|(attr, did)| (&**attr, *did)), false);
-
-        let mut item =
-            Item::from_def_id_and_attrs_and_parts(def_id, Some(name), kind, Box::new(attrs), cfg);
-        item.inline_stmt_id = import_id.map(|local| local.to_def_id());
-        vec![item]
+        vec![generate_item_with_correct_attrs(
+            cx,
+            kind,
+            item.owner_id.def_id,
+            name,
+            import_id,
+            renamed,
+        )]
     })
 }