Move methods from Map to TyCtxt, part 2.

Continuing the work started in #136466.

Every method gains a `hir_` prefix, though for the ones that already
have a `par_` or `try_par_` prefix I added the `hir_` after that.

Author: nnethercote

compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs

@@ -386,8 +386,9 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
                 hir::intravisit::walk_pat(self, p);
             }
         }
+        let tcx = self.infcx.tcx;
         let hir = self.infcx.tcx.hir();
-        if let Some(body) = hir.maybe_body_owned_by(self.mir_def_id()) {
+        if let Some(body) = tcx.hir_maybe_body_owned_by(self.mir_def_id()) {
             let expr = body.value;
             let place = &self.move_data.move_paths[mpi].place;
             let span = place.as_local().map(|local| self.body.local_decls[local].source_info.span);
@@ -396,7 +397,7 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
                 expr: None,
                 pat: None,
                 parent_pat: None,
-                tcx: self.infcx.tcx,
+                tcx,
             };
             finder.visit_expr(expr);
             if let Some(span) = span
@@ -782,9 +783,9 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
 
         // We use the statements were the binding was initialized, and inspect the HIR to look
         // for the branching codepaths that aren't covered, to point at them.
-        let map = self.infcx.tcx.hir();
-        let body = map.body_owned_by(self.mir_def_id());
-        let mut visitor = ConditionVisitor { tcx: self.infcx.tcx, spans, name, errors: vec![] };
+        let tcx = self.infcx.tcx;
+        let body = tcx.hir_body_owned_by(self.mir_def_id());
+        let mut visitor = ConditionVisitor { tcx, spans, name, errors: vec![] };
         visitor.visit_body(&body);
         let spans = visitor.spans;
 
@@ -2443,7 +2444,6 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
     ) {
         let &UseSpans::ClosureUse { capture_kind_span, .. } = issued_spans else { return };
         let tcx = self.infcx.tcx;
-        let hir = tcx.hir();
 
         // Get the type of the local that we are trying to borrow
         let local = borrowed_place.local;
@@ -2522,7 +2522,7 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
 
         // Find the first argument with a matching type, get its name
         let Some((_, this_name)) =
-            params.iter().zip(hir.body_param_names(closure.body)).find(|(param_ty, name)| {
+            params.iter().zip(tcx.hir_body_param_names(closure.body)).find(|(param_ty, name)| {
                 // FIXME: also support deref for stuff like `Rc` arguments
                 param_ty.peel_refs() == local_ty && name != &Ident::empty()
             })
@@ -4178,7 +4178,7 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
         debug!("annotate_fn_sig: did={:?} sig={:?}", did, sig);
         let is_closure = self.infcx.tcx.is_closure_like(did.to_def_id());
         let fn_hir_id = self.infcx.tcx.local_def_id_to_hir_id(did);
-        let fn_decl = self.infcx.tcx.hir().fn_decl_by_hir_id(fn_hir_id)?;
+        let fn_decl = self.infcx.tcx.hir_fn_decl_by_hir_id(fn_hir_id)?;
 
         // We need to work out which arguments to highlight. We do this by looking
         // at the return type, where there are three cases:

compiler/rustc_borrowck/src/diagnostics/move_errors.rs

@@ -777,12 +777,12 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
         }
         let Some(pat_span) = pat_span else { return };
 
-        let hir = self.infcx.tcx.hir();
-        let Some(body) = hir.maybe_body_owned_by(self.mir_def_id()) else { return };
+        let tcx = self.infcx.tcx;
+        let Some(body) = tcx.hir_maybe_body_owned_by(self.mir_def_id()) else { return };
         let typeck_results = self.infcx.tcx.typeck(self.mir_def_id());
         let mut finder = BindingFinder {
             typeck_results,
-            tcx: self.infcx.tcx,
+            tcx,
             pat_span,
             binding_spans,
             found_pat: false,

compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs

@@ -648,10 +648,9 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
                     }
                 }
             }
-            let hir_map = self.infcx.tcx.hir();
             let def_id = self.body.source.def_id();
             let Some(local_def_id) = def_id.as_local() else { return };
-            let Some(body) = hir_map.maybe_body_owned_by(local_def_id) else { return };
+            let Some(body) = self.infcx.tcx.hir_maybe_body_owned_by(local_def_id) else { return };
 
             let mut v = SuggestIndexOperatorAlternativeVisitor {
                 assign_span: span,
@@ -749,7 +748,7 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
         // `fn foo(&x: &i32)` -> `fn foo(&(mut x): &i32)`
         let def_id = self.body.source.def_id();
         if let Some(local_def_id) = def_id.as_local()
-            && let Some(body) = self.infcx.tcx.hir().maybe_body_owned_by(local_def_id)
+            && let Some(body) = self.infcx.tcx.hir_maybe_body_owned_by(local_def_id)
             && let Some(hir_id) = (BindingFinder { span: pat_span }).visit_body(&body).break_value()
             && let node = self.infcx.tcx.hir_node(hir_id)
             && let hir::Node::LetStmt(hir::LetStmt {
@@ -856,7 +855,7 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
         use hir::ExprKind::{AddrOf, Block, Call, MethodCall};
         use hir::{BorrowKind, Expr};
 
-        let hir_map = self.infcx.tcx.hir();
+        let tcx = self.infcx.tcx;
         struct Finder {
             span: Span,
         }
@@ -871,7 +870,7 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
                 }
             }
         }
-        if let Some(body) = hir_map.maybe_body_owned_by(self.mir_def_id())
+        if let Some(body) = tcx.hir_maybe_body_owned_by(self.mir_def_id())
             && let Block(block, _) = body.value.kind
         {
             // `span` corresponds to the expression being iterated, find the `for`-loop desugared
@@ -884,17 +883,15 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
                     MethodCall(path_segment, _, _, span) => {
                         // We have `for _ in iter.read_only_iter()`, try to
                         // suggest `for _ in iter.mutable_iter()` instead.
-                        let opt_suggestions = self
-                            .infcx
-                            .tcx
+                        let opt_suggestions = tcx
                             .typeck(path_segment.hir_id.owner.def_id)
                             .type_dependent_def_id(expr.hir_id)
-                            .and_then(|def_id| self.infcx.tcx.impl_of_method(def_id))
-                            .map(|def_id| self.infcx.tcx.associated_items(def_id))
+                            .and_then(|def_id| tcx.impl_of_method(def_id))
+                            .map(|def_id| tcx.associated_items(def_id))
                             .map(|assoc_items| {
                                 assoc_items
                                     .in_definition_order()
-                                    .map(|assoc_item_def| assoc_item_def.ident(self.infcx.tcx))
+                                    .map(|assoc_item_def| assoc_item_def.ident(tcx))
                                     .filter(|&ident| {
                                         let original_method_ident = path_segment.ident;
                                         original_method_ident != ident
@@ -942,7 +939,7 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
         let closure_span = tcx.def_span(self.mir_def_id());
         let fn_call_id = tcx.parent_hir_id(closure_id);
         let node = tcx.hir_node(fn_call_id);
-        let def_id = hir.enclosing_body_owner(fn_call_id);
+        let def_id = tcx.hir_enclosing_body_owner(fn_call_id);
         let mut look_at_return = true;
 
         // If the HIR node is a function or method call gets the def ID
@@ -1275,7 +1272,7 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
             }) => {
                 let def_id = self.body.source.def_id();
                 let hir_id = if let Some(local_def_id) = def_id.as_local()
-                    && let Some(body) = self.infcx.tcx.hir().maybe_body_owned_by(local_def_id)
+                    && let Some(body) = self.infcx.tcx.hir_maybe_body_owned_by(local_def_id)
                 {
                     BindingFinder { span: err_label_span }.visit_body(&body).break_value()
                 } else {

compiler/rustc_borrowck/src/diagnostics/region_errors.rs

@@ -1169,8 +1169,7 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
 
     #[allow(rustc::diagnostic_outside_of_impl)]
     fn suggest_move_on_borrowing_closure(&self, diag: &mut Diag<'_>) {
-        let map = self.infcx.tcx.hir();
-        let body = map.body_owned_by(self.mir_def_id());
+        let body = self.infcx.tcx.hir_body_owned_by(self.mir_def_id());
         let expr = &body.value.peel_blocks();
         let mut closure_span = None::<rustc_span::Span>;
         match expr.kind {

compiler/rustc_borrowck/src/diagnostics/region_name.rs

@@ -424,7 +424,7 @@ impl<'tcx> MirBorrowckCtxt<'_, '_, 'tcx> {
         &self,
         argument_index: usize,
     ) -> Option<&hir::Ty<'tcx>> {
-        let fn_decl = self.infcx.tcx.hir().fn_decl_by_hir_id(self.mir_hir_id())?;
+        let fn_decl = self.infcx.tcx.hir_fn_decl_by_hir_id(self.mir_hir_id())?;
         let argument_hir_ty: &hir::Ty<'_> = fn_decl.inputs.get(argument_index)?;
         match argument_hir_ty.kind {
             // This indicates a variable with no type annotation, like

compiler/rustc_borrowck/src/lib.rs

@@ -188,7 +188,7 @@ fn do_mir_borrowck<'tcx>(
         .iterate_to_fixpoint(tcx, body, Some("borrowck"))
         .into_results_cursor(body);
 
-    let locals_are_invalidated_at_exit = tcx.hir().body_owner_kind(def).is_fn_or_closure();
+    let locals_are_invalidated_at_exit = tcx.hir_body_owner_kind(def).is_fn_or_closure();
     let borrow_set = BorrowSet::build(tcx, body, locals_are_invalidated_at_exit, &move_data);
 
     // Compute non-lexical lifetimes.

compiler/rustc_borrowck/src/universal_regions.rs

@@ -576,7 +576,7 @@ impl<'cx, 'tcx> UniversalRegionsBuilder<'cx, 'tcx> {
         let tcx = self.infcx.tcx;
         let typeck_root_def_id = tcx.typeck_root_def_id(self.mir_def.to_def_id());
 
-        match tcx.hir().body_owner_kind(self.mir_def) {
+        match tcx.hir_body_owner_kind(self.mir_def) {
             BodyOwnerKind::Closure | BodyOwnerKind::Fn => {
                 let defining_ty = tcx.type_of(self.mir_def).instantiate_identity();
 

compiler/rustc_codegen_llvm/src/debuginfo/gdb.rs

@@ -87,7 +87,7 @@ pub(crate) fn get_or_insert_gdb_debug_scripts_section_global<'ll>(
 
 pub(crate) fn needs_gdb_debug_scripts_section(cx: &CodegenCx<'_, '_>) -> bool {
     let omit_gdb_pretty_printer_section =
-        attr::contains_name(cx.tcx.hir().krate_attrs(), sym::omit_gdb_pretty_printer_section);
+        attr::contains_name(cx.tcx.hir_krate_attrs(), sym::omit_gdb_pretty_printer_section);
 
     // To ensure the section `__rustc_debug_gdb_scripts_section__` will not create
     // ODR violations at link time, this section will not be emitted for rlibs since

compiler/rustc_const_eval/src/check_consts/mod.rs

@@ -31,7 +31,7 @@ pub struct ConstCx<'mir, 'tcx> {
 impl<'mir, 'tcx> ConstCx<'mir, 'tcx> {
     pub fn new(tcx: TyCtxt<'tcx>, body: &'mir mir::Body<'tcx>) -> Self {
         let typing_env = body.typing_env(tcx);
-        let const_kind = tcx.hir().body_const_context(body.source.def_id().expect_local());
+        let const_kind = tcx.hir_body_const_context(body.source.def_id().expect_local());
         ConstCx { body, tcx, typing_env, const_kind }
     }
 

compiler/rustc_driver_impl/src/pretty.rs

@@ -164,8 +164,7 @@ impl<'tcx> pprust_hir::PpAnn for HirTypedAnn<'tcx> {
         if let pprust_hir::AnnNode::Expr(expr) = node {
             let typeck_results = self.maybe_typeck_results.get().or_else(|| {
                 self.tcx
-                    .hir()
-                    .maybe_body_owned_by(expr.hir_id.owner.def_id)
+                    .hir_maybe_body_owned_by(expr.hir_id.owner.def_id)
                     .map(|body_id| self.tcx.typeck_body(body_id.id()))
             });
 
@@ -317,7 +316,7 @@ pub fn print<'tcx>(sess: &Session, ppm: PpMode, ex: PrintExtra<'tcx>) {
             rustc_hir_analysis::check_crate(tcx);
             tcx.dcx().abort_if_errors();
             debug!("pretty printing THIR tree");
-            for did in tcx.hir().body_owners() {
+            for did in tcx.hir_body_owners() {
                 let _ = writeln!(out, "{:?}:\n{}\n", did, thir_tree(tcx, did));
             }
             out
@@ -328,7 +327,7 @@ pub fn print<'tcx>(sess: &Session, ppm: PpMode, ex: PrintExtra<'tcx>) {
             rustc_hir_analysis::check_crate(tcx);
             tcx.dcx().abort_if_errors();
             debug!("pretty printing THIR flat");
-            for did in tcx.hir().body_owners() {
+            for did in tcx.hir_body_owners() {
                 let _ = writeln!(out, "{:?}:\n{}\n", did, thir_flat(tcx, did));
             }
             out

compiler/rustc_hir/src/intravisit.rs

@@ -19,7 +19,7 @@
 //!    - Example: Examine each expression to look for its type and do some check or other.
 //!    - How: Implement `intravisit::Visitor` and override the `NestedFilter` type to
 //!      `nested_filter::OnlyBodies` (and implement `maybe_tcx`), and use
-//!      `tcx.hir().visit_all_item_likes_in_crate(&mut visitor)`. Within your
+//!      `tcx.hir_visit_all_item_likes_in_crate(&mut visitor)`. Within your
 //!      `intravisit::Visitor` impl, implement methods like `visit_expr()` (don't forget to invoke
 //!      `intravisit::walk_expr()` to keep walking the subparts).
 //!    - Pro: Visitor methods for any kind of HIR node, not just item-like things.
@@ -31,7 +31,7 @@
 //!      impl into scope while visiting the impl-items, and then back out again.
 //!    - How: Implement `intravisit::Visitor` and override the `NestedFilter` type to
 //!      `nested_filter::All` (and implement `maybe_tcx`). Walk your crate with
-//!      `tcx.hir().walk_toplevel_module(visitor)` invoked on `tcx.hir().krate()`.
+//!      `tcx.hir_walk_toplevel_module(visitor)`.
 //!    - Pro: Visitor methods for any kind of HIR node, not just item-like things.
 //!    - Pro: Preserves nesting information
 //!    - Con: Does not integrate well into dependency tracking.
@@ -193,7 +193,7 @@ use nested_filter::NestedFilter;
 /// (this is why the module is called `intravisit`, to distinguish it
 /// from the AST's `visit` module, which acts differently). If you
 /// simply want to visit all items in the crate in some order, you
-/// should call `tcx.hir().visit_all_item_likes_in_crate`. Otherwise, see the comment
+/// should call `tcx.hir_visit_all_item_likes_in_crate`. Otherwise, see the comment
 /// on `visit_nested_item` for details on how to visit nested items.
 ///
 /// If you want to ensure that your code handles every variant

compiler/rustc_hir_analysis/src/check/check.rs

@@ -484,7 +484,7 @@ fn best_definition_site_of_opaque<'tcx>(
         hir::OpaqueTyOrigin::TyAlias { in_assoc_ty: false, .. } => {
             let scope = tcx.hir().get_defining_scope(tcx.local_def_id_to_hir_id(opaque_def_id));
             let found = if scope == hir::CRATE_HIR_ID {
-                tcx.hir().walk_toplevel_module(&mut locator)
+                tcx.hir_walk_toplevel_module(&mut locator)
             } else {
                 match tcx.hir_node(scope) {
                     Node::Item(it) => locator.visit_item(it),

compiler/rustc_hir_analysis/src/check/compare_impl_item.rs

@@ -501,7 +501,7 @@ pub(super) fn collect_return_position_impl_trait_in_trait_tys<'tcx>(
     check_method_is_structurally_compatible(tcx, impl_m, trait_m, impl_trait_ref, true)?;
 
     let impl_m_hir_id = tcx.local_def_id_to_hir_id(impl_m_def_id);
-    let return_span = tcx.hir().fn_decl_by_hir_id(impl_m_hir_id).unwrap().output.span();
+    let return_span = tcx.hir_fn_decl_by_hir_id(impl_m_hir_id).unwrap().output.span();
     let cause = ObligationCause::new(
         return_span,
         impl_m_def_id,
@@ -1033,8 +1033,7 @@ fn report_trait_method_mismatch<'tcx>(
             // argument pattern and type.
             let (sig, body) = tcx.hir().expect_impl_item(impl_m.def_id.expect_local()).expect_fn();
             let span = tcx
-                .hir()
-                .body_param_names(body)
+                .hir_body_param_names(body)
                 .zip(sig.decl.inputs.iter())
                 .map(|(param, ty)| param.span.to(ty.span))
                 .next()

compiler/rustc_hir_analysis/src/check/region.rs

@@ -844,7 +844,7 @@ impl<'tcx> Visitor<'tcx> for ScopeResolutionVisitor<'tcx> {
 
     fn visit_body(&mut self, body: &hir::Body<'tcx>) {
         let body_id = body.id();
-        let owner_id = self.tcx.hir().body_owner_def_id(body_id);
+        let owner_id = self.tcx.hir_body_owner_def_id(body_id);
 
         debug!(
             "visit_body(id={:?}, span={:?}, body.id={:?}, cx.parent={:?})",
@@ -855,7 +855,7 @@ impl<'tcx> Visitor<'tcx> for ScopeResolutionVisitor<'tcx> {
         );
 
         self.enter_body(body.value.hir_id, |this| {
-            if this.tcx.hir().body_owner_kind(owner_id).is_fn_or_closure() {
+            if this.tcx.hir_body_owner_kind(owner_id).is_fn_or_closure() {
                 // The arguments and `self` are parented to the fn.
                 this.cx.var_parent = this.cx.parent.take();
                 for param in body.params {
@@ -924,7 +924,7 @@ pub(crate) fn region_scope_tree(tcx: TyCtxt<'_>, def_id: DefId) -> &ScopeTree {
         return tcx.region_scope_tree(typeck_root_def_id);
     }
 
-    let scope_tree = if let Some(body) = tcx.hir().maybe_body_owned_by(def_id.expect_local()) {
+    let scope_tree = if let Some(body) = tcx.hir_maybe_body_owned_by(def_id.expect_local()) {
         let mut visitor = ScopeResolutionVisitor {
             tcx,
             scope_tree: ScopeTree::default(),

compiler/rustc_hir_analysis/src/check/wfcheck.rs

@@ -1710,7 +1710,7 @@ fn check_sized_if_body<'tcx>(
     maybe_span: Option<Span>,
 ) {
     let tcx = wfcx.tcx();
-    if let Some(body) = tcx.hir().maybe_body_owned_by(def_id) {
+    if let Some(body) = tcx.hir_maybe_body_owned_by(def_id) {
         let span = maybe_span.unwrap_or(body.value.span);
 
         wfcx.register_bound(

compiler/rustc_hir_analysis/src/check_unused.rs

@@ -13,11 +13,11 @@ pub(crate) fn provide(providers: &mut Providers) {
 fn check_unused_traits(tcx: TyCtxt<'_>, (): ()) {
     let mut used_trait_imports = UnordSet::<LocalDefId>::default();
 
-    // FIXME: Use `tcx.hir().par_body_owners()` when we implement creating `DefId`s
+    // FIXME: Use `tcx.hir_par_body_owners()` when we implement creating `DefId`s
     // for anon constants during their parents' typeck.
     // Doing so at current will produce queries cycle errors because it may typeck
     // on anon constants directly.
-    for item_def_id in tcx.hir().body_owners() {
+    for item_def_id in tcx.hir_body_owners() {
         let imports = tcx.used_trait_imports(item_def_id);
         debug!("GatherVisitor: item_def_id={:?} with imports {:#?}", item_def_id, imports);
         used_trait_imports.extend_unord(imports.items().copied());

compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs

@@ -113,7 +113,7 @@ impl<'tcx> InherentCollect<'tcx> {
         ty: Ty<'tcx>,
     ) -> Result<(), ErrorGuaranteed> {
         let items = self.tcx.associated_item_def_ids(impl_def_id);
-        if !self.tcx.hir().rustc_coherence_is_core() {
+        if !self.tcx.hir_rustc_coherence_is_core() {
             if self.tcx.features().rustc_attrs() {
                 for &impl_item in items {
                     if !self.tcx.has_attr(impl_item, sym::rustc_allow_incoherent_impl) {

compiler/rustc_hir_analysis/src/collect/predicates_of.rs

@@ -435,7 +435,7 @@ fn const_evaluatable_predicates_of<'tcx>(
         self_ty.instantiate_identity().visit_with(&mut collector);
     }
 
-    if let Some(_) = tcx.hir().fn_sig_by_hir_id(hir_id) {
+    if let Some(_) = tcx.hir_fn_sig_by_hir_id(hir_id) {
         debug!("visit fn sig");
         let fn_sig = tcx.fn_sig(def_id);
         let fn_sig = fn_sig.instantiate_identity();
@@ -825,7 +825,7 @@ pub(super) fn type_param_predicates<'tcx>(
     // `where T: Foo`.
 
     let param_id = tcx.local_def_id_to_hir_id(def_id);
-    let param_owner = tcx.hir().ty_param_owner(def_id);
+    let param_owner = tcx.hir_ty_param_owner(def_id);
 
     // Don't look for bounds where the type parameter isn't in scope.
     let parent = if item_def_id == param_owner {