Remove more traces of anonymous ADTs

compiler/rustc_hir/src/def.rs

@@ -9,7 +9,6 @@
 use rustc_span::Symbol;
 use rustc_span::def_id::{DefId, LocalDefId};
 use rustc_span::hygiene::MacroKind;
-use rustc_span::symbol::kw;
 
 use crate::definitions::DefPathData;
 use crate::hir;
@@ -256,7 +255,6 @@ pub fn ns(&self) -> Option<Namespace> {
 
     pub fn def_path_data(self, name: Symbol) -> DefPathData {
         match self {
-            DefKind::Struct | DefKind::Union if name == kw::Empty => DefPathData::AnonAdt,
             DefKind::Mod
             | DefKind::Struct
             | DefKind::Union

compiler/rustc_hir/src/definitions.rs

@@ -289,8 +289,6 @@ pub enum DefPathData {
     /// An existential `impl Trait` type node.
     /// Argument position `impl Trait` have a `TypeNs` with their pretty-printed name.
     OpaqueTy,
-    /// An anonymous struct or union type i.e. `struct { foo: Type }` or `union { bar: Type }`
-    AnonAdt,
 }
 
 impl Definitions {
@@ -415,7 +413,7 @@ pub fn get_opt_name(&self) -> Option<Symbol> {
             TypeNs(name) | ValueNs(name) | MacroNs(name) | LifetimeNs(name) => Some(name),
 
             Impl | ForeignMod | CrateRoot | Use | GlobalAsm | Closure | Ctor | AnonConst
-            | OpaqueTy | AnonAdt => None,
+            | OpaqueTy => None,
         }
     }
 
@@ -438,7 +436,6 @@ pub fn name(&self) -> DefPathDataName {
             Ctor => DefPathDataName::Anon { namespace: sym::constructor },
             AnonConst => DefPathDataName::Anon { namespace: sym::constant },
             OpaqueTy => DefPathDataName::Anon { namespace: sym::opaque },
-            AnonAdt => DefPathDataName::Anon { namespace: sym::anon_adt },
         }
     }
 }

compiler/rustc_hir/src/hir.rs

@@ -2882,8 +2882,6 @@ pub enum TyKind<'hir> {
     Never,
     /// A tuple (`(A, B, C, D, ...)`).
     Tup(&'hir [Ty<'hir>]),
-    /// An anonymous struct or union type i.e. `struct { foo: Type }` or `union { foo: Type }`
-    AnonAdt(ItemId),
     /// A path to a type definition (`module::module::...::Type`), or an
     /// associated type (e.g., `<Vec<T> as Trait>::Type` or `<T>::Target`).
     ///

compiler/rustc_hir/src/intravisit.rs

@@ -904,9 +904,6 @@ pub fn walk_ty<'v, V: Visitor<'v>>(visitor: &mut V, typ: &'v Ty<'v>) -> V::Resul
         }
         TyKind::Typeof(ref expression) => try_visit!(visitor.visit_anon_const(expression)),
         TyKind::Infer | TyKind::InferDelegation(..) | TyKind::Err(_) => {}
-        TyKind::AnonAdt(item_id) => {
-            try_visit!(visitor.visit_nested_item(item_id));
-        }
         TyKind::Pat(ty, pat) => {
             try_visit!(visitor.visit_ty(ty));
             try_visit!(visitor.visit_pattern_type_pattern(pat));

compiler/rustc_hir_analysis/src/hir_ty_lowering/mod.rs

@@ -50,7 +50,7 @@
 use rustc_trait_selection::infer::InferCtxtExt;
 use rustc_trait_selection::traits::wf::object_region_bounds;
 use rustc_trait_selection::traits::{self, ObligationCtxt};
-use tracing::{debug, debug_span, instrument};
+use tracing::{debug, instrument};
 
 use crate::bounds::Bounds;
 use crate::check::check_abi_fn_ptr;
@@ -2287,19 +2287,6 @@ pub fn lower_ty(&self, hir_ty: &hir::Ty<'tcx>) -> Ty<'tcx> {
             hir::TyKind::Tup(fields) => {
                 Ty::new_tup_from_iter(tcx, fields.iter().map(|t| self.lower_ty(t)))
             }
-            hir::TyKind::AnonAdt(item_id) => {
-                let _guard = debug_span!("AnonAdt");
-
-                let did = item_id.owner_id.def_id;
-                let adt_def = tcx.adt_def(did);
-
-                let args = ty::GenericArgs::for_item(tcx, did.to_def_id(), |param, _| {
-                    tcx.mk_param_from_def(param)
-                });
-                debug!(?args);
-
-                Ty::new_adt(tcx, adt_def, tcx.mk_args(args))
-            }
             hir::TyKind::BareFn(bf) => {
                 require_c_abi_if_c_variadic(tcx, bf.decl, bf.abi, hir_ty.span);
 

compiler/rustc_hir_pretty/src/lib.rs

@@ -330,7 +330,6 @@ fn print_type(&mut self, ty: &hir::Ty<'_>) {
             hir::TyKind::Infer | hir::TyKind::InferDelegation(..) => {
                 self.word("_");
             }
-            hir::TyKind::AnonAdt(..) => self.word("/* anonymous adt */"),
             hir::TyKind::Pat(ty, pat) => {
                 self.print_type(ty);
                 self.word(" is ");

compiler/rustc_passes/src/input_stats.rs

@@ -337,7 +337,6 @@ fn visit_ty(&mut self, t: &'v hir::Ty<'v>) {
             BareFn,
             Never,
             Tup,
-            AnonAdt,
             Path,
             OpaqueDef,
             TraitObject,

compiler/rustc_sanitizers/src/cfi/typeid/itanium_cxx_abi/encode.rs

@@ -716,8 +716,7 @@ fn encode_ty_name(tcx: TyCtxt<'_>, def_id: DefId) -> String {
             | hir::definitions::DefPathData::Use
             | hir::definitions::DefPathData::GlobalAsm
             | hir::definitions::DefPathData::MacroNs(..)
-            | hir::definitions::DefPathData::LifetimeNs(..)
-            | hir::definitions::DefPathData::AnonAdt => {
+            | hir::definitions::DefPathData::LifetimeNs(..) => {
                 bug!("encode_ty_name: unexpected `{:?}`", disambiguated_data.data);
             }
         });

compiler/rustc_symbol_mangling/src/v0.rs

@@ -772,8 +772,7 @@ fn path_append(
             | DefPathData::GlobalAsm
             | DefPathData::Impl
             | DefPathData::MacroNs(_)
-            | DefPathData::LifetimeNs(_)
-            | DefPathData::AnonAdt => {
+            | DefPathData::LifetimeNs(_) => {
                 bug!("symbol_names: unexpected DefPathData: {:?}", disambiguated_data.data)
             }
         };

src/librustdoc/clean/mod.rs

@@ -1841,9 +1841,6 @@ pub(crate) fn clean_ty<'tcx>(ty: &hir::Ty<'tcx>, cx: &mut DocContext<'tcx>) -> T
         TyKind::BareFn(barefn) => BareFunction(Box::new(clean_bare_fn_ty(barefn, cx))),
         // Rustdoc handles `TyKind::Err`s by turning them into `Type::Infer`s.
         TyKind::Infer | TyKind::Err(_) | TyKind::Typeof(..) | TyKind::InferDelegation(..) => Infer,
-        TyKind::AnonAdt(..) => {
-            unimplemented!("Anonymous structs or unions are not supported yet")
-        }
     }
 }
 

src/tools/clippy/clippy_lints/src/dereference.rs

@@ -818,7 +818,6 @@ fn for_hir_ty<'tcx>(ty: &'tcx hir::Ty<'tcx>) -> Self {
                 | TyKind::Typeof(..)
                 | TyKind::TraitObject(..)
                 | TyKind::InferDelegation(..)
-                | TyKind::AnonAdt(..)
                 | TyKind::Err(_) => Self::Reborrow,
             };
         }

src/tools/clippy/clippy_utils/src/hir_utils.rs

@@ -596,7 +596,6 @@ pub fn eq_ty(&mut self, left: &Ty<'_>, right: &Ty<'_>) -> bool {
             (TyKind::Path(l), TyKind::Path(r)) => self.eq_qpath(l, r),
             (&TyKind::Tup(l), &TyKind::Tup(r)) => over(l, r, |l, r| self.eq_ty(l, r)),
             (&TyKind::Infer, &TyKind::Infer) => true,
-            (TyKind::AnonAdt(l_item_id), TyKind::AnonAdt(r_item_id)) => l_item_id == r_item_id,
             _ => false,
         }
     }
@@ -1246,8 +1245,7 @@ pub fn hash_tykind(&mut self, ty: &TyKind<'_>) {
             | TyKind::Infer
             | TyKind::Never
             | TyKind::InferDelegation(..)
-            | TyKind::OpaqueDef(_)
-            | TyKind::AnonAdt(_) => {},
+            | TyKind::OpaqueDef(_) => {},
         }
     }