3 crate fn strip_item(mut item: Item) -> Item {
4 if !matches!(*item.kind, StrippedItem(..)) {
5 item.kind = box StrippedItem(item.kind);
10 crate trait DocFolder: Sized {
11 fn fold_item(&mut self, item: Item) -> Option<Item> {
12 Some(self.fold_item_recur(item))
16 fn fold_inner_recur(&mut self, kind: ItemKind) -> ItemKind {
18 StrippedItem(..) => unreachable!(),
19 ModuleItem(i) => ModuleItem(self.fold_mod(i)),
20 StructItem(mut i) => {
21 let num_fields = i.fields.len();
22 i.fields = i.fields.into_iter().filter_map(|x| self.fold_item(x)).collect();
24 num_fields != i.fields.len() || i.fields.iter().any(|f| f.is_stripped());
28 let num_fields = i.fields.len();
29 i.fields = i.fields.into_iter().filter_map(|x| self.fold_item(x)).collect();
31 num_fields != i.fields.len() || i.fields.iter().any(|f| f.is_stripped());
35 let num_variants = i.variants.len();
36 i.variants = i.variants.into_iter().filter_map(|x| self.fold_item(x)).collect();
37 i.variants_stripped |=
38 num_variants != i.variants.len() || i.variants.iter().any(|f| f.is_stripped());
42 i.items = i.items.into_iter().filter_map(|x| self.fold_item(x)).collect();
46 i.items = i.items.into_iter().filter_map(|x| self.fold_item(x)).collect();
50 let i2 = i.clone(); // this clone is small
52 Variant::Struct(mut j) => {
53 let num_fields = j.fields.len();
54 j.fields = j.fields.into_iter().filter_map(|x| self.fold_item(x)).collect();
55 j.fields_stripped |= num_fields != j.fields.len()
56 || j.fields.iter().any(|f| f.is_stripped());
57 VariantItem(Variant::Struct(j))
67 fn fold_item_recur(&mut self, mut item: Item) -> Item {
68 item.kind = box match *item.kind {
69 StrippedItem(box i) => StrippedItem(box self.fold_inner_recur(i)),
70 _ => self.fold_inner_recur(*item.kind),
75 fn fold_mod(&mut self, m: Module) -> Module {
78 items: m.items.into_iter().filter_map(|i| self.fold_item(i)).collect(),
82 fn fold_crate(&mut self, mut c: Crate) -> Crate {
83 c.module = self.fold_item(c.module).unwrap();
86 let external_traits = { std::mem::take(&mut *c.external_traits.borrow_mut()) };
87 for (k, mut v) in external_traits {
89 v.trait_.items.into_iter().filter_map(|i| self.fold_item(i)).collect();
90 c.external_traits.borrow_mut().insert(k, v);