3 pub struct StripItem(pub Item);
6 pub fn strip(self) -> Option<Item> {
8 Item { inner: StrippedItem(..), .. } => Some(self.0),
10 i.inner = StrippedItem(box i.inner);
17 pub trait DocFolder: Sized {
18 fn fold_item(&mut self, item: Item) -> Option<Item> {
19 self.fold_item_recur(item)
23 fn fold_inner_recur(&mut self, inner: ItemEnum) -> ItemEnum {
25 StrippedItem(..) => unreachable!(),
26 ModuleItem(i) => ModuleItem(self.fold_mod(i)),
27 StructItem(mut i) => {
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_fields = i.fields.len();
36 i.fields = i.fields.into_iter().filter_map(|x| self.fold_item(x)).collect();
38 num_fields != i.fields.len() || i.fields.iter().any(|f| f.is_stripped());
42 let num_variants = i.variants.len();
43 i.variants = i.variants.into_iter().filter_map(|x| self.fold_item(x)).collect();
44 i.variants_stripped |=
45 num_variants != i.variants.len() || i.variants.iter().any(|f| f.is_stripped());
49 i.items = i.items.into_iter().filter_map(|x| self.fold_item(x)).collect();
53 i.items = i.items.into_iter().filter_map(|x| self.fold_item(x)).collect();
57 let i2 = i.clone(); // this clone is small
59 VariantKind::Struct(mut j) => {
60 let num_fields = j.fields.len();
61 j.fields = j.fields.into_iter().filter_map(|x| self.fold_item(x)).collect();
62 j.fields_stripped |= num_fields != j.fields.len()
63 || j.fields.iter().any(|f| f.is_stripped());
64 VariantItem(Variant { kind: VariantKind::Struct(j), ..i2 })
74 fn fold_item_recur(&mut self, item: Item) -> Option<Item> {
75 let Item { attrs, name, source, visibility, def_id, inner, stability, deprecation } = item;
77 let inner = match inner {
78 StrippedItem(box i) => StrippedItem(box self.fold_inner_recur(i)),
79 _ => self.fold_inner_recur(inner),
82 Some(Item { attrs, name, source, inner, visibility, stability, deprecation, def_id })
85 fn fold_mod(&mut self, m: Module) -> Module {
88 items: m.items.into_iter().filter_map(|i| self.fold_item(i)).collect(),
92 fn fold_crate(&mut self, mut c: Crate) -> Crate {
93 c.module = c.module.take().and_then(|module| self.fold_item(module));
96 let external_traits = { std::mem::take(&mut *c.external_traits.borrow_mut()) };
97 for (k, mut v) in external_traits {
98 v.items = v.items.into_iter().filter_map(|i| self.fold_item(i)).collect();
99 c.external_traits.borrow_mut().insert(k, v);