Rollup merge of rust-lang#126650 - compiler-errors:renames, r=lcnr

Rename a bunch of things in the new solver and `rustc_type_ir`

* Renames `interner()` to `cx()` in the solver and `TypeFolder`.
* Renames `Infcx` generic param to `D`
* Moves `infcx.rs` to `delegate.rs`

r? lcnr

Author: jieyouxu

compiler/rustc_borrowck/src/region_infer/mod.rs

@@ -1110,7 +1110,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
             tcx: TyCtxt<'tcx>,
         }
         impl<'tcx> ty::TypeFolder<TyCtxt<'tcx>> for OpaqueFolder<'tcx> {
-            fn interner(&self) -> TyCtxt<'tcx> {
+            fn cx(&self) -> TyCtxt<'tcx> {
                 self.tcx
             }
             fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx> {

compiler/rustc_hir_analysis/src/check/compare_impl_item.rs

@@ -397,7 +397,7 @@ struct RemapLateBound<'a, 'tcx> {
 }
 
 impl<'tcx> TypeFolder<TyCtxt<'tcx>> for RemapLateBound<'_, 'tcx> {
-    fn interner(&self) -> TyCtxt<'tcx> {
+    fn cx(&self) -> TyCtxt<'tcx> {
         self.tcx
     }
 
@@ -790,13 +790,13 @@ impl<'tcx, E> TypeFolder<TyCtxt<'tcx>> for ImplTraitInTraitCollector<'_, 'tcx, E
 where
     E: 'tcx,
 {
-    fn interner(&self) -> TyCtxt<'tcx> {
+    fn cx(&self) -> TyCtxt<'tcx> {
         self.ocx.infcx.tcx
     }
 
     fn fold_ty(&mut self, ty: Ty<'tcx>) -> Ty<'tcx> {
         if let ty::Alias(ty::Projection, proj) = ty.kind()
-            && self.interner().is_impl_trait_in_trait(proj.def_id)
+            && self.cx().is_impl_trait_in_trait(proj.def_id)
         {
             if let Some((ty, _)) = self.types.get(&proj.def_id) {
                 return *ty;
@@ -810,9 +810,9 @@ where
             self.types.insert(proj.def_id, (infer_ty, proj.args));
             // Recurse into bounds
             for (pred, pred_span) in self
-                .interner()
+                .cx()
                 .explicit_item_bounds(proj.def_id)
-                .iter_instantiated_copied(self.interner(), proj.args)
+                .iter_instantiated_copied(self.cx(), proj.args)
             {
                 let pred = pred.fold_with(self);
                 let pred = self.ocx.normalize(
@@ -822,7 +822,7 @@ where
                 );
 
                 self.ocx.register_obligation(traits::Obligation::new(
-                    self.interner(),
+                    self.cx(),
                     ObligationCause::new(
                         self.span,
                         self.body_id,
@@ -853,7 +853,7 @@ struct RemapHiddenTyRegions<'tcx> {
 impl<'tcx> ty::FallibleTypeFolder<TyCtxt<'tcx>> for RemapHiddenTyRegions<'tcx> {
     type Error = ErrorGuaranteed;
 
-    fn interner(&self) -> TyCtxt<'tcx> {
+    fn cx(&self) -> TyCtxt<'tcx> {
         self.tcx
     }
 
@@ -2072,7 +2072,7 @@ struct ReplaceTy<'tcx> {
 }
 
 impl<'tcx> TypeFolder<TyCtxt<'tcx>> for ReplaceTy<'tcx> {
-    fn interner(&self) -> TyCtxt<'tcx> {
+    fn cx(&self) -> TyCtxt<'tcx> {
         self.tcx
     }
 

compiler/rustc_hir_analysis/src/check/compare_impl_item/refine.rs

@@ -322,7 +322,7 @@ struct Anonymize<'tcx> {
 }
 
 impl<'tcx> TypeFolder<TyCtxt<'tcx>> for Anonymize<'tcx> {
-    fn interner(&self) -> TyCtxt<'tcx> {
+    fn cx(&self) -> TyCtxt<'tcx> {
         self.tcx
     }
 

compiler/rustc_hir_analysis/src/coherence/orphan.rs

@@ -539,7 +539,7 @@ struct TyVarReplacer<'cx, 'tcx> {
 }
 
 impl<'cx, 'tcx> TypeFolder<TyCtxt<'tcx>> for TyVarReplacer<'cx, 'tcx> {
-    fn interner(&self) -> TyCtxt<'tcx> {
+    fn cx(&self) -> TyCtxt<'tcx> {
         self.infcx.tcx
     }
 

compiler/rustc_hir_analysis/src/collect/item_bounds.rs

@@ -203,7 +203,7 @@ struct AssocTyToOpaque<'tcx> {
 }
 
 impl<'tcx> TypeFolder<TyCtxt<'tcx>> for AssocTyToOpaque<'tcx> {
-    fn interner(&self) -> TyCtxt<'tcx> {
+    fn cx(&self) -> TyCtxt<'tcx> {
         self.tcx
     }
 

compiler/rustc_hir_typeck/src/writeback.rs

@@ -847,7 +847,7 @@ impl<'cx, 'tcx> Resolver<'cx, 'tcx> {
 }
 
 impl<'cx, 'tcx> TypeFolder<TyCtxt<'tcx>> for Resolver<'cx, 'tcx> {
-    fn interner(&self) -> TyCtxt<'tcx> {
+    fn cx(&self) -> TyCtxt<'tcx> {
         self.fcx.tcx
     }
 

compiler/rustc_infer/src/infer/canonical/canonicalizer.rs

@@ -304,7 +304,7 @@ struct Canonicalizer<'cx, 'tcx> {
 }
 
 impl<'cx, 'tcx> TypeFolder<TyCtxt<'tcx>> for Canonicalizer<'cx, 'tcx> {
-    fn interner(&self) -> TyCtxt<'tcx> {
+    fn cx(&self) -> TyCtxt<'tcx> {
         self.tcx
     }
 
@@ -773,7 +773,7 @@ impl<'cx, 'tcx> Canonicalizer<'cx, 'tcx> {
     ) -> ty::Region<'tcx> {
         let var = self.canonical_var(info, r.into());
         let br = ty::BoundRegion { var, kind: ty::BrAnon };
-        ty::Region::new_bound(self.interner(), self.binder_index, br)
+        ty::Region::new_bound(self.cx(), self.binder_index, br)
     }
 
     /// Given a type variable `ty_var` of the given kind, first check

compiler/rustc_infer/src/infer/error_reporting/need_type_info.rs

@@ -158,7 +158,7 @@ struct ClosureEraser<'tcx> {
 }
 
 impl<'tcx> TypeFolder<TyCtxt<'tcx>> for ClosureEraser<'tcx> {
-    fn interner(&self) -> TyCtxt<'tcx> {
+    fn cx(&self) -> TyCtxt<'tcx> {
         self.tcx
     }
 

compiler/rustc_infer/src/infer/freshen.rs

@@ -100,7 +100,7 @@ impl<'a, 'tcx> TypeFreshener<'a, 'tcx> {
 }
 
 impl<'a, 'tcx> TypeFolder<TyCtxt<'tcx>> for TypeFreshener<'a, 'tcx> {
-    fn interner(&self) -> TyCtxt<'tcx> {
+    fn cx(&self) -> TyCtxt<'tcx> {
         self.infcx.tcx
     }
 
@@ -117,7 +117,7 @@ impl<'a, 'tcx> TypeFolder<TyCtxt<'tcx>> for TypeFreshener<'a, 'tcx> {
             | ty::RePlaceholder(..)
             | ty::ReStatic
             | ty::ReError(_)
-            | ty::ReErased => self.interner().lifetimes.re_erased,
+            | ty::ReErased => self.cx().lifetimes.re_erased,
         }
     }
 

compiler/rustc_infer/src/infer/mod.rs

@@ -1719,7 +1719,7 @@ struct InferenceLiteralEraser<'tcx> {
 }
 
 impl<'tcx> TypeFolder<TyCtxt<'tcx>> for InferenceLiteralEraser<'tcx> {
-    fn interner(&self) -> TyCtxt<'tcx> {
+    fn cx(&self) -> TyCtxt<'tcx> {
         self.tcx
     }
 
@@ -1859,7 +1859,7 @@ fn replace_param_and_infer_args_with_placeholder<'tcx>(
     }
 
     impl<'tcx> TypeFolder<TyCtxt<'tcx>> for ReplaceParamAndInferWithPlaceholder<'tcx> {
-        fn interner(&self) -> TyCtxt<'tcx> {
+        fn cx(&self) -> TyCtxt<'tcx> {
             self.tcx
         }