Rename things to reflect that they're not item specific

compiler/rustc_hir_analysis/src/astconv/mod.rs

@@ -1040,7 +1040,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
 
     /// Convert the bounds in `ast_bounds` that refer to traits which define an associated type
     /// named `assoc_name` into ty::Bounds. Ignore the rest.
-    pub(crate) fn compute_bounds_that_match_assoc_type(
+    pub(crate) fn compute_bounds_that_match_assoc_item(
         &self,
         param_ty: Ty<'tcx>,
         ast_bounds: &[hir::GenericBound<'_>],
@@ -1051,7 +1051,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
         for ast_bound in ast_bounds {
             if let Some(trait_ref) = ast_bound.trait_ref()
                 && let Some(trait_did) = trait_ref.trait_def_id()
-                && self.tcx().trait_may_define_assoc_type(trait_did, assoc_name)
+                && self.tcx().trait_may_define_assoc_item(trait_did, assoc_name)
             {
                 result.push(ast_bound.clone());
             }
@@ -1923,7 +1923,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
         let param_name = tcx.hir().ty_param_name(ty_param_def_id);
         self.one_bound_for_assoc_type(
             || {
-                traits::transitive_bounds_that_define_assoc_type(
+                traits::transitive_bounds_that_define_assoc_item(
                     tcx,
                     predicates.iter().filter_map(|(p, _)| {
                         Some(p.to_opt_poly_trait_pred()?.map_bound(|t| t.trait_ref))

compiler/rustc_hir_analysis/src/collect.rs

@@ -64,8 +64,8 @@ pub fn provide(providers: &mut Providers) {
         explicit_predicates_of: predicates_of::explicit_predicates_of,
         super_predicates_of: predicates_of::super_predicates_of,
         implied_predicates_of: predicates_of::implied_predicates_of,
-        super_predicates_that_define_assoc_type:
+        super_predicates_that_define_assoc_item:
-            predicates_of::super_predicates_that_define_assoc_type,
+            predicates_of::super_predicates_that_define_assoc_item,
         trait_explicit_predicates_and_bounds: predicates_of::trait_explicit_predicates_and_bounds,
         type_param_predicates: predicates_of::type_param_predicates,
         trait_def,

compiler/rustc_hir_analysis/src/collect/predicates_of.rs

@@ -565,7 +565,7 @@ pub(super) fn super_predicates_of(
     implied_predicates_with_filter(tcx, trait_def_id.to_def_id(), PredicateFilter::SelfOnly)
 }
 
-pub(super) fn super_predicates_that_define_assoc_type(
+pub(super) fn super_predicates_that_define_assoc_item(
     tcx: TyCtxt<'_>,
     (trait_def_id, assoc_name): (DefId, Ident),
 ) -> ty::GenericPredicates<'_> {
@@ -640,7 +640,7 @@ pub(super) fn implied_predicates_with_filter(
         ),
         PredicateFilter::SelfThatDefines(assoc_name) => (
             // Convert the bounds that follow the colon (or equal) that reference the associated name
-            icx.astconv().compute_bounds_that_match_assoc_type(self_param_ty, bounds, assoc_name),
+            icx.astconv().compute_bounds_that_match_assoc_item(self_param_ty, bounds, assoc_name),
             // Include where clause bounds for `Self` that reference the associated name
             icx.type_parameter_bounds_in_generics(
                 generics,
@@ -819,7 +819,7 @@ impl<'tcx> ItemCtxt<'tcx> {
             hir::GenericBound::Trait(poly_trait_ref, _) => {
                 let trait_ref = &poly_trait_ref.trait_ref;
                 if let Some(trait_did) = trait_ref.trait_def_id() {
-                    self.tcx.trait_may_define_assoc_type(trait_did, assoc_name)
+                    self.tcx.trait_may_define_assoc_item(trait_did, assoc_name)
                 } else {
                     false
                 }

compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs

@@ -1728,7 +1728,7 @@ impl<'a, 'tcx> BoundVarContext<'a, 'tcx> {
         assoc_name: Ident,
         assoc_kind: ty::AssocKind,
     ) -> Option<(Vec<ty::BoundVariableKind>, &'tcx ty::AssocItem)> {
-        let trait_defines_associated_type_named = |trait_def_id: DefId| {
+        let trait_defines_associated_item_named = |trait_def_id: DefId| {
             tcx.associated_items(trait_def_id).find_by_name_and_kind(
                 tcx,
                 assoc_name,
@@ -1752,10 +1752,10 @@ impl<'a, 'tcx> BoundVarContext<'a, 'tcx> {
                 _ => break None,
             }
 
-            if let Some(assoc_item) = trait_defines_associated_type_named(def_id) {
+            if let Some(assoc_item) = trait_defines_associated_item_named(def_id) {
                 break Some((bound_vars.into_iter().collect(), assoc_item));
             }
-            let predicates = tcx.super_predicates_that_define_assoc_type((def_id, assoc_name));
+            let predicates = tcx.super_predicates_that_define_assoc_item((def_id, assoc_name));
             let obligations = predicates.predicates.iter().filter_map(|&(pred, _)| {
                 let bound_predicate = pred.kind();
                 match bound_predicate.skip_binder() {

compiler/rustc_infer/src/traits/util.rs

@@ -376,11 +376,11 @@ pub fn transitive_bounds<'tcx>(
 }
 
 /// A specialized variant of `elaborate` that only elaborates trait references that may
-/// define the given associated type `assoc_name`. It uses the
+/// define the given associated item with the name `assoc_name`. It uses the
-/// `super_predicates_that_define_assoc_type` query to avoid enumerating super-predicates that
+/// `super_predicates_that_define_assoc_item` query to avoid enumerating super-predicates that
 /// aren't related to `assoc_item`. This is used when resolving types like `Self::Item` or
 /// `T::Item` and helps to avoid cycle errors (see e.g. #35237).
-pub fn transitive_bounds_that_define_assoc_type<'tcx>(
+pub fn transitive_bounds_that_define_assoc_item<'tcx>(
     tcx: TyCtxt<'tcx>,
     bounds: impl Iterator<Item = ty::PolyTraitRef<'tcx>>,
     assoc_name: Ident,
@@ -393,7 +393,7 @@ pub fn transitive_bounds_that_define_assoc_type<'tcx>(
             let anon_trait_ref = tcx.anonymize_bound_vars(trait_ref);
             if visited.insert(anon_trait_ref) {
                 let super_predicates =
-                    tcx.super_predicates_that_define_assoc_type((trait_ref.def_id(), assoc_name));
+                    tcx.super_predicates_that_define_assoc_item((trait_ref.def_id(), assoc_name));
                 for (super_predicate, _) in super_predicates.predicates {
                     let subst_predicate = super_predicate.subst_supertrait(tcx, &trait_ref);
                     if let Some(binder) = subst_predicate.to_opt_poly_trait_pred() {

compiler/rustc_middle/src/query/mod.rs

@@ -569,7 +569,7 @@ rustc_queries! {
     /// returns the full set of predicates. If `Some<Ident>`, then the query returns only the
     /// subset of super-predicates that reference traits that define the given associated type.
     /// This is used to avoid cycles in resolving types like `T::Item`.
-    query super_predicates_that_define_assoc_type(key: (DefId, rustc_span::symbol::Ident)) -> ty::GenericPredicates<'tcx> {
+    query super_predicates_that_define_assoc_item(key: (DefId, rustc_span::symbol::Ident)) -> ty::GenericPredicates<'tcx> {
         desc { |tcx| "computing the super traits of `{}` with associated type name `{}`",
             tcx.def_path_str(key.0),
             key.1

compiler/rustc_middle/src/ty/context.rs

@@ -1567,16 +1567,11 @@ impl<'tcx> TyCtxt<'tcx> {
 
     /// Given the def_id of a Trait `trait_def_id` and the name of an associated item `assoc_name`
     /// returns true if the `trait_def_id` defines an associated item of name `assoc_name`.
-    pub fn trait_may_define_assoc_type(self, trait_def_id: DefId, assoc_name: Ident) -> bool {
+    pub fn trait_may_define_assoc_item(self, trait_def_id: DefId, assoc_name: Ident) -> bool {
         self.super_traits_of(trait_def_id).any(|trait_did| {
             self.associated_items(trait_did)
-                .find_by_name_and_kinds(
+                .filter_by_name_unhygienic(assoc_name.name)
-                    self,
+                .any(|item| self.hygienic_eq(assoc_name, item.ident(self), trait_did))
-                    assoc_name,
-                    &[ty::AssocKind::Type, ty::AssocKind::Const, ty::AssocKind::Fn],
-                    trait_did,
-                )
-                .is_some()
         })
     }
 

compiler/rustc_trait_selection/src/traits/mod.rs

@@ -62,7 +62,7 @@ pub use self::util::elaborate;
 pub use self::util::{expand_trait_aliases, TraitAliasExpander};
 pub use self::util::{get_vtable_index_of_object_method, impl_item_is_final, upcast_choices};
 pub use self::util::{
-    supertrait_def_ids, supertraits, transitive_bounds, transitive_bounds_that_define_assoc_type,
+    supertrait_def_ids, supertraits, transitive_bounds, transitive_bounds_that_define_assoc_item,
     SupertraitDefIds,
 };