Auto merge of #70643 - Rustin-Liu:rustin-patch-rename, r=eddyb

Rename AssocKind::Method to AssocKind::Fn

Part of #60163.

#60163 (comment)

src/librustc_ast_lowering/item.rs

@@ -796,7 +796,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
                 (hir::AssocItemKind::Type, default.is_some())
             }
             AssocItemKind::Fn(_, sig, _, default) => {
-                (hir::AssocItemKind::Method { has_self: sig.decl.has_self() }, default.is_some())
+                (hir::AssocItemKind::Fn { has_self: sig.decl.has_self() }, default.is_some())
             }
             AssocItemKind::MacCall(..) => unimplemented!(),
         };
@@ -894,7 +894,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
                     }
                 }
                 AssocItemKind::Fn(_, sig, ..) => {
-                    hir::AssocItemKind::Method { has_self: sig.decl.has_self() }
+                    hir::AssocItemKind::Fn { has_self: sig.decl.has_self() }
                 }
                 AssocItemKind::MacCall(..) => unimplemented!(),
             },

src/librustc_hir/hir.rs

@@ -2515,7 +2515,7 @@ pub struct ImplItemRef<'hir> {
 #[derive(Copy, Clone, PartialEq, RustcEncodable, RustcDecodable, Debug, HashStable_Generic)]
 pub enum AssocItemKind {
     Const,
-    Method { has_self: bool },
+    Fn { has_self: bool },
     Type,
     OpaqueTy,
 }

src/librustc_infer/infer/error_reporting/nice_region_error/util.rs

@@ -118,7 +118,7 @@ impl<'a, 'tcx> NiceRegionError<'a, 'tcx> {
     // enable E0621 for it.
     pub(super) fn is_self_anon(&self, is_first: bool, scope_def_id: DefId) -> bool {
         is_first
-            && self.tcx().opt_associated_item(scope_def_id).map(|i| i.method_has_self_argument)
+            && self.tcx().opt_associated_item(scope_def_id).map(|i| i.fn_has_self_parameter)
                 == Some(true)
     }
 }

src/librustc_metadata/rmeta/decoder.rs

@@ -1153,7 +1153,7 @@ impl<'a, 'tcx> CrateMetadataRef<'a> {
             EntryKind::AssocConst(container, _, _) => (ty::AssocKind::Const, container, false),
             EntryKind::AssocFn(data) => {
                 let data = data.decode(self);
-                (ty::AssocKind::Method, data.container, data.has_self)
+                (ty::AssocKind::Fn, data.container, data.has_self)
             }
             EntryKind::AssocType(container) => (ty::AssocKind::Type, container, false),
             EntryKind::AssocOpaqueTy(container) => (ty::AssocKind::OpaqueTy, container, false),
@@ -1167,7 +1167,7 @@ impl<'a, 'tcx> CrateMetadataRef<'a> {
             defaultness: container.defaultness(),
             def_id: self.local_def_id(id),
             container: container.with_def_id(parent),
-            method_has_self_argument: has_self,
+            fn_has_self_parameter: has_self,
         }
     }
 

src/librustc_metadata/rmeta/encoder.rs

@@ -839,7 +839,7 @@ impl EncodeContext<'tcx> {
                     rendered_const,
                 )
             }
-            ty::AssocKind::Method => {
+            ty::AssocKind::Fn => {
                 let fn_data = if let hir::TraitItemKind::Fn(m_sig, m) = &ast_item.kind {
                     let param_names = match *m {
                         hir::TraitFn::Required(ref names) => {
@@ -860,7 +860,7 @@ impl EncodeContext<'tcx> {
                 EntryKind::AssocFn(self.lazy(AssocFnData {
                     fn_data,
                     container,
-                    has_self: trait_item.method_has_self_argument,
+                    has_self: trait_item.fn_has_self_parameter,
                 }))
             }
             ty::AssocKind::Type => EntryKind::AssocType(container),
@@ -874,7 +874,7 @@ impl EncodeContext<'tcx> {
         self.encode_const_stability(def_id);
         self.encode_deprecation(def_id);
         match trait_item.kind {
-            ty::AssocKind::Const | ty::AssocKind::Method => {
+            ty::AssocKind::Const | ty::AssocKind::Fn => {
                 self.encode_item_type(def_id);
             }
             ty::AssocKind::Type => {
@@ -884,7 +884,7 @@ impl EncodeContext<'tcx> {
             }
             ty::AssocKind::OpaqueTy => unreachable!(),
         }
-        if trait_item.kind == ty::AssocKind::Method {
+        if trait_item.kind == ty::AssocKind::Fn {
             record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id));
             self.encode_variances_of(def_id);
         }
@@ -931,7 +931,7 @@ impl EncodeContext<'tcx> {
                     bug!()
                 }
             }
-            ty::AssocKind::Method => {
+            ty::AssocKind::Fn => {
                 let fn_data = if let hir::ImplItemKind::Fn(ref sig, body) = ast_item.kind {
                     FnData {
                         asyncness: sig.header.asyncness,
@@ -944,7 +944,7 @@ impl EncodeContext<'tcx> {
                 EntryKind::AssocFn(self.lazy(AssocFnData {
                     fn_data,
                     container,
-                    has_self: impl_item.method_has_self_argument,
+                    has_self: impl_item.fn_has_self_parameter,
                 }))
             }
             ty::AssocKind::OpaqueTy => EntryKind::AssocOpaqueTy(container),
@@ -958,7 +958,7 @@ impl EncodeContext<'tcx> {
         self.encode_const_stability(def_id);
         self.encode_deprecation(def_id);
         self.encode_item_type(def_id);
-        if impl_item.kind == ty::AssocKind::Method {
+        if impl_item.kind == ty::AssocKind::Fn {
             record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id));
             self.encode_variances_of(def_id);
         }

src/librustc_middle/traits/specialization_graph.rs

@@ -107,13 +107,13 @@ impl<'tcx> Node {
             .find(move |impl_item| {
                 match (trait_item_kind, impl_item.kind) {
                 | (Const, Const)
-                | (Method, Method)
+                | (Fn, Fn)
                 | (Type, Type)
                 | (Type, OpaqueTy)  // assoc. types can be made opaque in impls
                 => tcx.hygienic_eq(impl_item.ident, trait_item_name, trait_def_id),
 
                 | (Const, _)
-                | (Method, _)
+                | (Fn, _)
                 | (Type, _)
                 | (OpaqueTy, _)
                 => false,

src/librustc_middle/ty/adjustment.rs

@@ -123,7 +123,7 @@ impl<'tcx> OverloadedDeref<'tcx> {
         let method_def_id = tcx
             .associated_items(trait_def_id.unwrap())
             .in_definition_order()
-            .find(|m| m.kind == ty::AssocKind::Method)
+            .find(|m| m.kind == ty::AssocKind::Fn)
             .unwrap()
             .def_id;
         (method_def_id, tcx.mk_substs_trait(source, &[]))

src/librustc_middle/ty/instance.rs

@@ -366,7 +366,7 @@ impl<'tcx> Instance<'tcx> {
         let call_once = tcx
             .associated_items(fn_once)
             .in_definition_order()
-            .find(|it| it.kind == ty::AssocKind::Method)
+            .find(|it| it.kind == ty::AssocKind::Fn)
             .unwrap()
             .def_id;
         let def = ty::InstanceDef::ClosureOnceShim { call_once };

src/librustc_middle/ty/mod.rs

@@ -1,5 +1,3 @@
-// ignore-tidy-filelength
-
 pub use self::fold::{TypeFoldable, TypeVisitor};
 pub use self::AssocItemContainer::*;
 pub use self::BorrowKind::*;
@@ -192,58 +190,50 @@ pub struct AssocItem {
     pub container: AssocItemContainer,
 
     /// Whether this is a method with an explicit self
-    /// as its first argument, allowing method calls.
-    pub method_has_self_argument: bool,
+    /// as its first parameter, allowing method calls.
+    pub fn_has_self_parameter: bool,
 }
 
 #[derive(Copy, Clone, PartialEq, Debug, HashStable)]
 pub enum AssocKind {
     Const,
-    Method,
+    Fn,
     OpaqueTy,
     Type,
 }
 
 impl AssocKind {
-    pub fn suggestion_descr(&self) -> &'static str {
-        match self {
-            ty::AssocKind::Method => "method call",
-            ty::AssocKind::Type | ty::AssocKind::OpaqueTy => "associated type",
-            ty::AssocKind::Const => "associated constant",
-        }
-    }
-
     pub fn namespace(&self) -> Namespace {
         match *self {
             ty::AssocKind::OpaqueTy | ty::AssocKind::Type => Namespace::TypeNS,
-            ty::AssocKind::Const | ty::AssocKind::Method => Namespace::ValueNS,
+            ty::AssocKind::Const | ty::AssocKind::Fn => Namespace::ValueNS,
         }
     }
-}
 
-impl AssocItem {
-    pub fn def_kind(&self) -> DefKind {
-        match self.kind {
+    pub fn as_def_kind(&self) -> DefKind {
+        match self {
             AssocKind::Const => DefKind::AssocConst,
-            AssocKind::Method => DefKind::AssocFn,
+            AssocKind::Fn => DefKind::AssocFn,
             AssocKind::Type => DefKind::AssocTy,
             AssocKind::OpaqueTy => DefKind::AssocOpaqueTy,
         }
     }
+}
 
+impl AssocItem {
     /// Tests whether the associated item admits a non-trivial implementation
     /// for !
     pub fn relevant_for_never(&self) -> bool {
         match self.kind {
             AssocKind::OpaqueTy | AssocKind::Const | AssocKind::Type => true,
             // FIXME(canndrew): Be more thorough here, check if any argument is uninhabited.
-            AssocKind::Method => !self.method_has_self_argument,
+            AssocKind::Fn => !self.fn_has_self_parameter,
         }
     }
 
     pub fn signature(&self, tcx: TyCtxt<'_>) -> String {
         match self.kind {
-            ty::AssocKind::Method => {
+            ty::AssocKind::Fn => {
                 // We skip the binder here because the binder would deanonymize all
                 // late-bound regions, and we don't want method signatures to show up
                 // `as for<'r> fn(&'r MyType)`.  Pretty-printing handles late-bound
@@ -2664,7 +2654,7 @@ impl<'tcx> TyCtxt<'tcx> {
     pub fn provided_trait_methods(self, id: DefId) -> impl 'tcx + Iterator<Item = &'tcx AssocItem> {
         self.associated_items(id)
             .in_definition_order()
-            .filter(|item| item.kind == AssocKind::Method && item.defaultness.has_value())
+            .filter(|item| item.kind == AssocKind::Fn && item.defaultness.has_value())
     }
 
     pub fn trait_relevant_for_never(self, did: DefId) -> bool {

src/librustc_mir/shim.rs

@@ -74,7 +74,7 @@ fn make_shim<'tcx>(tcx: TyCtxt<'tcx>, instance: ty::InstanceDef<'tcx>) -> &'tcx
             let call_mut = tcx
                 .associated_items(fn_mut)
                 .in_definition_order()
-                .find(|it| it.kind == ty::AssocKind::Method)
+                .find(|it| it.kind == ty::AssocKind::Fn)
                 .unwrap()
                 .def_id;
 

src/librustc_mir_build/hair/cx/mod.rs

@@ -176,7 +176,7 @@ impl<'a, 'tcx> Cx<'a, 'tcx> {
             .tcx
             .associated_items(trait_def_id)
             .filter_by_name_unhygienic(method_name)
-            .find(|item| item.kind == ty::AssocKind::Method)
+            .find(|item| item.kind == ty::AssocKind::Fn)
             .expect("trait method not found");
 
         let method_ty = self.tcx.type_of(item.def_id);

src/librustc_privacy/lib.rs

@@ -1648,7 +1648,7 @@ impl<'a, 'tcx> Visitor<'tcx> for ObsoleteVisiblePrivateTypesVisitor<'a, 'tcx> {
                                     found_pub_static = true;
                                     intravisit::walk_impl_item(self, impl_item);
                                 }
-                                AssocItemKind::Method { has_self: false } => {
+                                AssocItemKind::Fn { has_self: false } => {
                                     found_pub_static = true;
                                     intravisit::walk_impl_item(self, impl_item);
                                 }
@@ -1927,7 +1927,7 @@ impl<'a, 'tcx> PrivateItemsInPublicInterfacesVisitor<'a, 'tcx> {
         let mut check = self.check(hir_id, vis);
 
         let (check_ty, is_assoc_ty) = match assoc_item_kind {
-            AssocItemKind::Const | AssocItemKind::Method { .. } => (true, false),
+            AssocItemKind::Const | AssocItemKind::Fn { .. } => (true, false),
             AssocItemKind::Type => (defaultness.has_value(), true),
             // `ty()` for opaque types is the underlying type,
             // it's not a part of interface, so we skip it.

src/librustc_resolve/build_reduced_graph.rs

@@ -921,7 +921,7 @@ impl<'a, 'b> BuildReducedGraphVisitor<'a, 'b> {
             Res::Def(DefKind::AssocFn, def_id) => {
                 if cstore
                     .associated_item_cloned_untracked(def_id, self.r.session)
-                    .method_has_self_argument
+                    .fn_has_self_parameter
                 {
                     self.r.has_self.insert(def_id);
                 }

src/librustc_resolve/late/lifetimes.rs

@@ -2117,7 +2117,7 @@ impl<'a, 'tcx> LifetimeContext<'a, 'tcx> {
         };
 
         let has_self = match assoc_item_kind {
-            Some(hir::AssocItemKind::Method { has_self }) => has_self,
+            Some(hir::AssocItemKind::Fn { has_self }) => has_self,
             _ => false,
         };
 

src/librustc_trait_selection/traits/error_reporting/suggestions.rs

@@ -1029,7 +1029,7 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> {
                 err.note(&format!(
                     "{}s cannot be accessed directly on a `trait`, they can only be \
                         accessed through a specific `impl`",
-                    assoc_item.kind.suggestion_descr(),
+                    assoc_item.kind.as_def_kind().descr(def_id)
                 ));
                 err.span_suggestion(
                     span,

src/librustc_trait_selection/traits/mod.rs

@@ -475,7 +475,7 @@ fn vtable_methods<'tcx>(
         let trait_methods = tcx
             .associated_items(trait_ref.def_id())
             .in_definition_order()
-            .filter(|item| item.kind == ty::AssocKind::Method);
+            .filter(|item| item.kind == ty::AssocKind::Fn);
 
         // Now list each method's DefId and InternalSubsts (for within its trait).
         // If the method can never be called from this object, produce None.

src/librustc_trait_selection/traits/object_safety.rs

@@ -86,7 +86,7 @@ fn object_safety_violations_for_trait(
     let mut violations: Vec<_> = tcx
         .associated_items(trait_def_id)
         .in_definition_order()
-        .filter(|item| item.kind == ty::AssocKind::Method)
+        .filter(|item| item.kind == ty::AssocKind::Fn)
         .filter_map(|item| {
             object_safety_violation_for_method(tcx, trait_def_id, &item)
                 .map(|(code, span)| ObjectSafetyViolation::Method(item.ident.name, code, span))
@@ -362,7 +362,7 @@ fn virtual_call_violation_for_method<'tcx>(
     method: &ty::AssocItem,
 ) -> Option<MethodViolationCode> {
     // The method's first parameter must be named `self`
-    if !method.method_has_self_argument {
+    if !method.fn_has_self_parameter {
         // We'll attempt to provide a structured suggestion for `Self: Sized`.
         let sugg =
             tcx.hir().get_if_local(method.def_id).as_ref().and_then(|node| node.generics()).map(

src/librustc_trait_selection/traits/util.rs

@@ -293,7 +293,7 @@ pub fn count_own_vtable_entries(tcx: TyCtxt<'tcx>, trait_ref: ty::PolyTraitRef<'
     // Count number of methods and add them to the total offset.
     // Skip over associated types and constants.
     for trait_item in tcx.associated_items(trait_ref.def_id()).in_definition_order() {
-        if trait_item.kind == ty::AssocKind::Method {
+        if trait_item.kind == ty::AssocKind::Fn {
             entries += 1;
         }
     }
@@ -315,10 +315,10 @@ pub fn get_vtable_index_of_object_method<N>(
     for trait_item in tcx.associated_items(object.upcast_trait_ref.def_id()).in_definition_order() {
         if trait_item.def_id == method_def_id {
             // The item with the ID we were given really ought to be a method.
-            assert_eq!(trait_item.kind, ty::AssocKind::Method);
+            assert_eq!(trait_item.kind, ty::AssocKind::Fn);
             return entries;
         }
-        if trait_item.kind == ty::AssocKind::Method {
+        if trait_item.kind == ty::AssocKind::Fn {
             entries += 1;
         }
     }

src/librustc_ty/ty.rs

@@ -85,7 +85,7 @@ fn associated_item_from_trait_item_ref(
     let def_id = tcx.hir().local_def_id(trait_item_ref.id.hir_id);
     let (kind, has_self) = match trait_item_ref.kind {
         hir::AssocItemKind::Const => (ty::AssocKind::Const, false),
-        hir::AssocItemKind::Method { has_self } => (ty::AssocKind::Method, has_self),
+        hir::AssocItemKind::Fn { has_self } => (ty::AssocKind::Fn, has_self),
         hir::AssocItemKind::Type => (ty::AssocKind::Type, false),
         hir::AssocItemKind::OpaqueTy => bug!("only impls can have opaque types"),
     };
@@ -98,7 +98,7 @@ fn associated_item_from_trait_item_ref(
         defaultness: trait_item_ref.defaultness,
         def_id,
         container: ty::TraitContainer(parent_def_id),
-        method_has_self_argument: has_self,
+        fn_has_self_parameter: has_self,
     }
 }
 
@@ -110,7 +110,7 @@ fn associated_item_from_impl_item_ref(
     let def_id = tcx.hir().local_def_id(impl_item_ref.id.hir_id);
     let (kind, has_self) = match impl_item_ref.kind {
         hir::AssocItemKind::Const => (ty::AssocKind::Const, false),
-        hir::AssocItemKind::Method { has_self } => (ty::AssocKind::Method, has_self),
+        hir::AssocItemKind::Fn { has_self } => (ty::AssocKind::Fn, has_self),
         hir::AssocItemKind::Type => (ty::AssocKind::Type, false),
         hir::AssocItemKind::OpaqueTy => (ty::AssocKind::OpaqueTy, false),
     };
@@ -123,7 +123,7 @@ fn associated_item_from_impl_item_ref(
         defaultness: impl_item_ref.defaultness,
         def_id,
         container: ty::ImplContainer(parent_def_id),
-        method_has_self_argument: has_self,
+        fn_has_self_parameter: has_self,
     }
 }