8fe936099a
fix a ui test use `into` fix clippy ui test fix a run-make-fulldeps test implement `IntoQueryParam<DefId>` for `OwnerId` use `OwnerId` for more queries change the type of `ParentOwnerIterator::Item` to `(OwnerId, OwnerNode)`
358 lines
12 KiB
Rust
358 lines
12 KiB
Rust
use rustc_data_structures::fx::FxHashMap;
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use rustc_data_structures::sorted_map::SortedMap;
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use rustc_hir as hir;
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use rustc_hir::def_id::LocalDefId;
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use rustc_hir::definitions;
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use rustc_hir::intravisit::{self, Visitor};
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use rustc_hir::*;
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use rustc_index::vec::{Idx, IndexVec};
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use rustc_middle::span_bug;
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use rustc_session::Session;
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use rustc_span::source_map::SourceMap;
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use rustc_span::{Span, DUMMY_SP};
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/// A visitor that walks over the HIR and collects `Node`s into a HIR map.
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pub(super) struct NodeCollector<'a, 'hir> {
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/// Source map
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source_map: &'a SourceMap,
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bodies: &'a SortedMap<ItemLocalId, &'hir Body<'hir>>,
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/// Outputs
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nodes: IndexVec<ItemLocalId, Option<ParentedNode<'hir>>>,
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parenting: FxHashMap<LocalDefId, ItemLocalId>,
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/// The parent of this node
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parent_node: hir::ItemLocalId,
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owner: OwnerId,
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definitions: &'a definitions::Definitions,
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}
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#[instrument(level = "debug", skip(sess, definitions, bodies))]
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pub(super) fn index_hir<'hir>(
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sess: &Session,
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definitions: &definitions::Definitions,
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item: hir::OwnerNode<'hir>,
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bodies: &SortedMap<ItemLocalId, &'hir Body<'hir>>,
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) -> (IndexVec<ItemLocalId, Option<ParentedNode<'hir>>>, FxHashMap<LocalDefId, ItemLocalId>) {
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let mut nodes = IndexVec::new();
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// This node's parent should never be accessed: the owner's parent is computed by the
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// hir_owner_parent query. Make it invalid (= ItemLocalId::MAX) to force an ICE whenever it is
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// used.
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nodes.push(Some(ParentedNode { parent: ItemLocalId::INVALID, node: item.into() }));
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let mut collector = NodeCollector {
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source_map: sess.source_map(),
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definitions,
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owner: item.def_id(),
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parent_node: ItemLocalId::new(0),
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nodes,
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bodies,
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parenting: FxHashMap::default(),
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};
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match item {
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OwnerNode::Crate(citem) => {
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collector.visit_mod(&citem, citem.spans.inner_span, hir::CRATE_HIR_ID)
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}
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OwnerNode::Item(item) => collector.visit_item(item),
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OwnerNode::TraitItem(item) => collector.visit_trait_item(item),
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OwnerNode::ImplItem(item) => collector.visit_impl_item(item),
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OwnerNode::ForeignItem(item) => collector.visit_foreign_item(item),
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};
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(collector.nodes, collector.parenting)
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}
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impl<'a, 'hir> NodeCollector<'a, 'hir> {
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#[instrument(level = "debug", skip(self))]
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fn insert(&mut self, span: Span, hir_id: HirId, node: Node<'hir>) {
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debug_assert_eq!(self.owner, hir_id.owner);
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debug_assert_ne!(hir_id.local_id.as_u32(), 0);
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debug_assert_ne!(hir_id.local_id, self.parent_node);
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// Make sure that the DepNode of some node coincides with the HirId
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// owner of that node.
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if cfg!(debug_assertions) {
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if hir_id.owner != self.owner {
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span_bug!(
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span,
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"inconsistent DepNode at `{:?}` for `{:?}`: \
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current_dep_node_owner={} ({:?}), hir_id.owner={} ({:?})",
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self.source_map.span_to_diagnostic_string(span),
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node,
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self.definitions.def_path(self.owner.def_id).to_string_no_crate_verbose(),
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self.owner,
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self.definitions.def_path(hir_id.owner.def_id).to_string_no_crate_verbose(),
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hir_id.owner,
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)
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}
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}
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self.nodes.insert(hir_id.local_id, ParentedNode { parent: self.parent_node, node: node });
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}
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fn with_parent<F: FnOnce(&mut Self)>(&mut self, parent_node_id: HirId, f: F) {
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debug_assert_eq!(parent_node_id.owner, self.owner);
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let parent_node = self.parent_node;
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self.parent_node = parent_node_id.local_id;
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f(self);
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self.parent_node = parent_node;
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}
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fn insert_nested(&mut self, item: LocalDefId) {
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self.parenting.insert(item, self.parent_node);
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}
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}
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impl<'a, 'hir> Visitor<'hir> for NodeCollector<'a, 'hir> {
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/// Because we want to track parent items and so forth, enable
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/// deep walking so that we walk nested items in the context of
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/// their outer items.
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fn visit_nested_item(&mut self, item: ItemId) {
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debug!("visit_nested_item: {:?}", item);
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self.insert_nested(item.def_id.def_id);
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}
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fn visit_nested_trait_item(&mut self, item_id: TraitItemId) {
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self.insert_nested(item_id.def_id.def_id);
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}
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fn visit_nested_impl_item(&mut self, item_id: ImplItemId) {
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self.insert_nested(item_id.def_id.def_id);
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}
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fn visit_nested_foreign_item(&mut self, foreign_id: ForeignItemId) {
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self.insert_nested(foreign_id.def_id.def_id);
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}
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fn visit_nested_body(&mut self, id: BodyId) {
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debug_assert_eq!(id.hir_id.owner, self.owner);
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let body = self.bodies[&id.hir_id.local_id];
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self.visit_body(body);
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}
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fn visit_param(&mut self, param: &'hir Param<'hir>) {
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let node = Node::Param(param);
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self.insert(param.pat.span, param.hir_id, node);
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self.with_parent(param.hir_id, |this| {
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intravisit::walk_param(this, param);
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});
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}
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#[instrument(level = "debug", skip(self))]
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fn visit_item(&mut self, i: &'hir Item<'hir>) {
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debug_assert_eq!(i.def_id, self.owner);
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self.with_parent(i.hir_id(), |this| {
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if let ItemKind::Struct(ref struct_def, _) = i.kind {
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// If this is a tuple or unit-like struct, register the constructor.
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if let Some(ctor_hir_id) = struct_def.ctor_hir_id() {
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this.insert(i.span, ctor_hir_id, Node::Ctor(struct_def));
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}
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}
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intravisit::walk_item(this, i);
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});
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}
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#[instrument(level = "debug", skip(self))]
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fn visit_foreign_item(&mut self, fi: &'hir ForeignItem<'hir>) {
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debug_assert_eq!(fi.def_id, self.owner);
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self.with_parent(fi.hir_id(), |this| {
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intravisit::walk_foreign_item(this, fi);
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});
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}
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fn visit_generic_param(&mut self, param: &'hir GenericParam<'hir>) {
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self.insert(param.span, param.hir_id, Node::GenericParam(param));
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intravisit::walk_generic_param(self, param);
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}
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fn visit_const_param_default(&mut self, param: HirId, ct: &'hir AnonConst) {
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self.with_parent(param, |this| {
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intravisit::walk_const_param_default(this, ct);
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})
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}
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#[instrument(level = "debug", skip(self))]
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fn visit_trait_item(&mut self, ti: &'hir TraitItem<'hir>) {
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debug_assert_eq!(ti.def_id, self.owner);
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self.with_parent(ti.hir_id(), |this| {
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intravisit::walk_trait_item(this, ti);
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});
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}
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#[instrument(level = "debug", skip(self))]
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fn visit_impl_item(&mut self, ii: &'hir ImplItem<'hir>) {
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debug_assert_eq!(ii.def_id, self.owner);
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self.with_parent(ii.hir_id(), |this| {
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intravisit::walk_impl_item(this, ii);
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});
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}
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fn visit_pat(&mut self, pat: &'hir Pat<'hir>) {
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self.insert(pat.span, pat.hir_id, Node::Pat(pat));
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self.with_parent(pat.hir_id, |this| {
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intravisit::walk_pat(this, pat);
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});
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}
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fn visit_pat_field(&mut self, field: &'hir PatField<'hir>) {
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self.insert(field.span, field.hir_id, Node::PatField(field));
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self.with_parent(field.hir_id, |this| {
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intravisit::walk_pat_field(this, field);
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});
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}
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fn visit_arm(&mut self, arm: &'hir Arm<'hir>) {
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let node = Node::Arm(arm);
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self.insert(arm.span, arm.hir_id, node);
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self.with_parent(arm.hir_id, |this| {
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intravisit::walk_arm(this, arm);
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});
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}
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fn visit_anon_const(&mut self, constant: &'hir AnonConst) {
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self.insert(DUMMY_SP, constant.hir_id, Node::AnonConst(constant));
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self.with_parent(constant.hir_id, |this| {
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intravisit::walk_anon_const(this, constant);
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});
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}
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fn visit_expr(&mut self, expr: &'hir Expr<'hir>) {
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self.insert(expr.span, expr.hir_id, Node::Expr(expr));
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self.with_parent(expr.hir_id, |this| {
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intravisit::walk_expr(this, expr);
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});
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}
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fn visit_expr_field(&mut self, field: &'hir ExprField<'hir>) {
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self.insert(field.span, field.hir_id, Node::ExprField(field));
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self.with_parent(field.hir_id, |this| {
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intravisit::walk_expr_field(this, field);
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});
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}
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fn visit_stmt(&mut self, stmt: &'hir Stmt<'hir>) {
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self.insert(stmt.span, stmt.hir_id, Node::Stmt(stmt));
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self.with_parent(stmt.hir_id, |this| {
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intravisit::walk_stmt(this, stmt);
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});
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}
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fn visit_path_segment(&mut self, path_segment: &'hir PathSegment<'hir>) {
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self.insert(path_segment.ident.span, path_segment.hir_id, Node::PathSegment(path_segment));
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intravisit::walk_path_segment(self, path_segment);
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}
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fn visit_ty(&mut self, ty: &'hir Ty<'hir>) {
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self.insert(ty.span, ty.hir_id, Node::Ty(ty));
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self.with_parent(ty.hir_id, |this| {
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intravisit::walk_ty(this, ty);
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});
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}
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fn visit_infer(&mut self, inf: &'hir InferArg) {
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self.insert(inf.span, inf.hir_id, Node::Infer(inf));
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self.with_parent(inf.hir_id, |this| {
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intravisit::walk_inf(this, inf);
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});
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}
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fn visit_trait_ref(&mut self, tr: &'hir TraitRef<'hir>) {
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self.insert(tr.path.span, tr.hir_ref_id, Node::TraitRef(tr));
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self.with_parent(tr.hir_ref_id, |this| {
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intravisit::walk_trait_ref(this, tr);
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});
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}
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fn visit_fn(
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&mut self,
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fk: intravisit::FnKind<'hir>,
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fd: &'hir FnDecl<'hir>,
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b: BodyId,
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_: Span,
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id: HirId,
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) {
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assert_eq!(self.owner, id.owner);
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assert_eq!(self.parent_node, id.local_id);
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intravisit::walk_fn(self, fk, fd, b, id);
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}
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fn visit_block(&mut self, block: &'hir Block<'hir>) {
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self.insert(block.span, block.hir_id, Node::Block(block));
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self.with_parent(block.hir_id, |this| {
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intravisit::walk_block(this, block);
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});
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}
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fn visit_local(&mut self, l: &'hir Local<'hir>) {
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self.insert(l.span, l.hir_id, Node::Local(l));
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self.with_parent(l.hir_id, |this| {
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intravisit::walk_local(this, l);
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})
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}
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fn visit_lifetime(&mut self, lifetime: &'hir Lifetime) {
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self.insert(lifetime.span, lifetime.hir_id, Node::Lifetime(lifetime));
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}
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fn visit_variant(&mut self, v: &'hir Variant<'hir>) {
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self.insert(v.span, v.id, Node::Variant(v));
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self.with_parent(v.id, |this| {
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// Register the constructor of this variant.
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if let Some(ctor_hir_id) = v.data.ctor_hir_id() {
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this.insert(v.span, ctor_hir_id, Node::Ctor(&v.data));
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}
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intravisit::walk_variant(this, v);
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});
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}
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fn visit_field_def(&mut self, field: &'hir FieldDef<'hir>) {
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self.insert(field.span, field.hir_id, Node::Field(field));
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self.with_parent(field.hir_id, |this| {
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intravisit::walk_field_def(this, field);
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});
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}
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fn visit_assoc_type_binding(&mut self, type_binding: &'hir TypeBinding<'hir>) {
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self.insert(type_binding.span, type_binding.hir_id, Node::TypeBinding(type_binding));
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self.with_parent(type_binding.hir_id, |this| {
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intravisit::walk_assoc_type_binding(this, type_binding)
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})
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}
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fn visit_trait_item_ref(&mut self, ii: &'hir TraitItemRef) {
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// Do not visit the duplicate information in TraitItemRef. We want to
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// map the actual nodes, not the duplicate ones in the *Ref.
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let TraitItemRef { id, ident: _, kind: _, span: _ } = *ii;
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self.visit_nested_trait_item(id);
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}
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fn visit_impl_item_ref(&mut self, ii: &'hir ImplItemRef) {
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// Do not visit the duplicate information in ImplItemRef. We want to
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// map the actual nodes, not the duplicate ones in the *Ref.
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let ImplItemRef { id, ident: _, kind: _, span: _, trait_item_def_id: _ } = *ii;
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self.visit_nested_impl_item(id);
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}
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fn visit_foreign_item_ref(&mut self, fi: &'hir ForeignItemRef) {
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// Do not visit the duplicate information in ForeignItemRef. We want to
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// map the actual nodes, not the duplicate ones in the *Ref.
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let ForeignItemRef { id, ident: _, span: _ } = *fi;
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self.visit_nested_foreign_item(id);
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}
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}
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