hir: Remove `hir::Map::{opt_parent_id,parent_id,get_parent,find_parent}`

7 files changed, 11 insertions, 19 deletions

diff --git a/compiler/rustc_hir_analysis/src/astconv/mod.rs b/compiler/rustc_hir_analysis/src/astconv/mod.rs
index d438d3e7c60..1ae3ebaebbb 100644
--- a/compiler/rustc_hir_analysis/src/astconv/mod.rs
+++ b/compiler/rustc_hir_analysis/src/astconv/mod.rs
@@ -2749,14 +2749,12 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
         arg_idx: Option<usize>,
     ) -> Option<Ty<'tcx>> {
         let tcx = self.tcx();
-        let hir = tcx.hir();
-
         let hir::Node::ImplItem(hir::ImplItem { kind: hir::ImplItemKind::Fn(..), ident, .. }) =
             tcx.hir_node(fn_hir_id)
         else {
             return None;
         };
-        let i = hir.get_parent(fn_hir_id).expect_item().expect_impl();
+        let i = tcx.parent_hir_node(fn_hir_id).expect_item().expect_impl();
 
         let trait_ref =
             self.instantiate_mono_trait_ref(i.of_trait.as_ref()?, self.ast_ty_to_ty(i.self_ty));
diff --git a/compiler/rustc_hir_analysis/src/collect.rs b/compiler/rustc_hir_analysis/src/collect.rs
index fbcebb7c87c..f458ff01c10 100644
--- a/compiler/rustc_hir_analysis/src/collect.rs
+++ b/compiler/rustc_hir_analysis/src/collect.rs
@@ -224,11 +224,8 @@ pub(crate) fn placeholder_type_error_diag<'tcx>(
             is_fn = true;
 
             // Check if parent is const or static
-            let parent_id = tcx.hir().parent_id(hir_ty.hir_id);
-            let parent_node = tcx.hir_node(parent_id);
-
             is_const_or_static = matches!(
-                parent_node,
+                tcx.parent_hir_node(hir_ty.hir_id),
                 Node::Item(&hir::Item {
                     kind: hir::ItemKind::Const(..) | hir::ItemKind::Static(..),
                     ..
@@ -1085,7 +1082,7 @@ fn fn_sig(tcx: TyCtxt<'_>, def_id: LocalDefId) -> ty::EarlyBinder<ty::PolyFnSig<
 
         ImplItem(hir::ImplItem { kind: ImplItemKind::Fn(sig, _), generics, .. }) => {
             // Do not try to infer the return type for a impl method coming from a trait
-            if let Item(hir::Item { kind: ItemKind::Impl(i), .. }) = tcx.hir().get_parent(hir_id)
+            if let Item(hir::Item { kind: ItemKind::Impl(i), .. }) = tcx.parent_hir_node(hir_id)
                 && i.of_trait.is_some()
             {
                 icx.astconv().ty_of_fn(
diff --git a/compiler/rustc_hir_analysis/src/collect/generics_of.rs b/compiler/rustc_hir_analysis/src/collect/generics_of.rs
index 4860555de20..e5e731bbe8c 100644
--- a/compiler/rustc_hir_analysis/src/collect/generics_of.rs
+++ b/compiler/rustc_hir_analysis/src/collect/generics_of.rs
@@ -51,7 +51,7 @@ pub(super) fn generics_of(tcx: TyCtxt<'_>, def_id: LocalDefId) -> ty::Generics {
                 // of a const parameter type, e.g. `struct Foo<const N: usize, const M: [u8; N]>` is not allowed.
                 None
             } else if tcx.features().generic_const_exprs {
-                let parent_node = tcx.hir().get_parent(hir_id);
+                let parent_node = tcx.parent_hir_node(hir_id);
                 if let Node::Variant(Variant { disr_expr: Some(constant), .. }) = parent_node
                     && constant.hir_id == hir_id
                 {
@@ -113,7 +113,7 @@ pub(super) fn generics_of(tcx: TyCtxt<'_>, def_id: LocalDefId) -> ty::Generics {
                     Some(parent_def_id.to_def_id())
                 }
             } else {
-                let parent_node = tcx.hir().get_parent(hir_id);
+                let parent_node = tcx.parent_hir_node(hir_id);
                 match parent_node {
                     // HACK(eddyb) this provides the correct generics for repeat
                     // expressions' count (i.e. `N` in `[x; N]`), and explicit
diff --git a/compiler/rustc_hir_analysis/src/collect/predicates_of.rs b/compiler/rustc_hir_analysis/src/collect/predicates_of.rs
index ab9ed6ef98d..05755f98f20 100644
--- a/compiler/rustc_hir_analysis/src/collect/predicates_of.rs
+++ b/compiler/rustc_hir_analysis/src/collect/predicates_of.rs
@@ -315,8 +315,7 @@ fn gather_explicit_predicates_of(tcx: TyCtxt<'_>, def_id: LocalDefId) -> ty::Gen
     // We create bi-directional Outlives predicates between the original
     // and the duplicated parameter, to ensure that they do not get out of sync.
     if let Node::Item(&Item { kind: ItemKind::OpaqueTy(..), .. }) = node {
-        let opaque_ty_id = tcx.hir().parent_id(hir_id);
-        let opaque_ty_node = tcx.hir_node(opaque_ty_id);
+        let opaque_ty_node = tcx.parent_hir_node(hir_id);
         let Node::Ty(&Ty { kind: TyKind::OpaqueDef(_, lifetimes, _), .. }) = opaque_ty_node else {
             bug!("unexpected {opaque_ty_node:?}")
         };
diff --git a/compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs b/compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs
index 3849c0893f4..1aa9c6929f8 100644
--- a/compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs
+++ b/compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs
@@ -732,7 +732,7 @@ impl<'a, 'tcx> Visitor<'tcx> for BoundVarContext<'a, 'tcx> {
                     let Some(def_id) = def_id.as_local() else { continue };
                     let hir_id = self.tcx.local_def_id_to_hir_id(def_id);
                     // Ensure that the parent of the def is an item, not HRTB
-                    let parent_id = self.tcx.hir().parent_id(hir_id);
+                    let parent_id = self.tcx.parent_hir_id(hir_id);
                     if !parent_id.is_owner() {
                         struct_span_code_err!(
                             self.tcx.dcx(),
diff --git a/compiler/rustc_hir_analysis/src/collect/type_of.rs b/compiler/rustc_hir_analysis/src/collect/type_of.rs
index 20a7663f864..c0128afe2bf 100644
--- a/compiler/rustc_hir_analysis/src/collect/type_of.rs
+++ b/compiler/rustc_hir_analysis/src/collect/type_of.rs
@@ -30,7 +30,7 @@ fn anon_const_type_of<'tcx>(tcx: TyCtxt<'tcx>, def_id: LocalDefId) -> Ty<'tcx> {
         );
     };
 
-    let parent_node_id = tcx.hir().parent_id(hir_id);
+    let parent_node_id = tcx.parent_hir_id(hir_id);
     let parent_node = tcx.hir_node(parent_node_id);
 
     let (generics, arg_idx) = match parent_node {
@@ -79,7 +79,7 @@ fn anon_const_type_of<'tcx>(tcx: TyCtxt<'tcx>, def_id: LocalDefId) -> Ty<'tcx> {
         }
 
         Node::TypeBinding(binding @ &TypeBinding { hir_id: binding_id, .. })
-            if let Node::TraitRef(trait_ref) = tcx.hir_node(tcx.hir().parent_id(binding_id)) =>
+            if let Node::TraitRef(trait_ref) = tcx.parent_hir_node(binding_id) =>
         {
             let Some(trait_def_id) = trait_ref.trait_def_id() else {
                 return Ty::new_error_with_message(
diff --git a/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs b/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs
index 3b1ee2975fd..52ff8b2e45d 100644
--- a/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs
+++ b/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs
@@ -135,7 +135,7 @@ impl<'a, 'tcx> WrongNumberOfGenericArgs<'a, 'tcx> {
             // Here we check if the reference to the generic type
             // is from the 'of_trait' field of the enclosing impl
 
-            let parent = self.tcx.hir().get_parent(self.path_segment.hir_id);
+            let parent = self.tcx.parent_hir_node(self.path_segment.hir_id);
             let parent_item = self.tcx.hir_node_by_def_id(
                 self.tcx.hir().get_parent_item(self.path_segment.hir_id).def_id,
             );
@@ -770,9 +770,7 @@ impl<'a, 'tcx> WrongNumberOfGenericArgs<'a, 'tcx> {
             num = num_trait_generics_except_self,
         );
 
-        if let Some(parent_node) = self.tcx.hir().opt_parent_id(self.path_segment.hir_id)
-            && let hir::Node::Expr(expr) = self.tcx.hir_node(parent_node)
-        {
+        if let hir::Node::Expr(expr) = self.tcx.parent_hir_node(self.path_segment.hir_id) {
             match &expr.kind {
                 hir::ExprKind::Path(qpath) => self
                     .suggest_moving_args_from_assoc_fn_to_trait_for_qualified_path(