Introduce a hir_owner_parent query.

2021-03-06 11:25:41 +01:00
parent 18bffdb10e
commit d794cb0d4f
3 changed files with 14 additions and 2 deletions
--- a/compiler/rustc_middle/src/hir/map/mod.rs
+++ b/compiler/rustc_middle/src/hir/map/mod.rs
@@ -285,8 +285,7 @@ impl<'hir> Map<'hir> {

    pub fn find_parent_node(&self, id: HirId) -> Option<HirId> {
        if id.local_id == ItemLocalId::from_u32(0) {
-            let index = self.tcx.index_hir(LOCAL_CRATE);
-            index.parenting.get(&id.owner).copied()
+            Some(self.tcx.hir_owner_parent(id.owner))
        } else {
            let owner = self.tcx.hir_owner_nodes(id.owner)?;
            let node = owner.nodes[id.local_id].as_ref()?;