Rollup merge of rust-lang#59510 - varkor:rename-type_parameters, r=eddyb

Rename `type_parameters` to `generics` and so on

Some old variable names had fallen through the generics generalisation pull requests.

src/librustc/hir/intravisit.rs

@@ -485,30 +485,30 @@ pub fn walk_item<'v, V: Visitor<'v>>(visitor: &mut V, item: &'v Item) {
         ItemKind::GlobalAsm(_) => {
             visitor.visit_id(item.hir_id);
         }
-        ItemKind::Ty(ref typ, ref type_parameters) => {
+        ItemKind::Ty(ref ty, ref generics) => {
             visitor.visit_id(item.hir_id);
-            visitor.visit_ty(typ);
-            visitor.visit_generics(type_parameters)
+            visitor.visit_ty(ty);
+            visitor.visit_generics(generics)
         }
         ItemKind::Existential(ExistTy { ref generics, ref bounds, impl_trait_fn: _ }) => {
             visitor.visit_id(item.hir_id);
             walk_generics(visitor, generics);
             walk_list!(visitor, visit_param_bound, bounds);
         }
-        ItemKind::Enum(ref enum_definition, ref type_parameters) => {
-            visitor.visit_generics(type_parameters);
+        ItemKind::Enum(ref enum_definition, ref generics) => {
+            visitor.visit_generics(generics);
             // `visit_enum_def()` takes care of visiting the `Item`'s `HirId`.
-            visitor.visit_enum_def(enum_definition, type_parameters, item.hir_id, item.span)
+            visitor.visit_enum_def(enum_definition, generics, item.hir_id, item.span)
         }
         ItemKind::Impl(
             ..,
-            ref type_parameters,
+            ref generics,
             ref opt_trait_reference,
             ref typ,
             ref impl_item_refs
         ) => {
             visitor.visit_id(item.hir_id);
-            visitor.visit_generics(type_parameters);
+            visitor.visit_generics(generics);
             walk_list!(visitor, visit_trait_ref, opt_trait_reference);
             visitor.visit_ty(typ);
             walk_list!(visitor, visit_impl_item_ref, impl_item_refs);

src/librustc_mir/monomorphize/collector.rs

@@ -1040,7 +1040,7 @@ impl<'b, 'a, 'v> ItemLikeVisitor<'v> for RootCollector<'b, 'a, 'v> {
 
 impl<'b, 'a, 'v> RootCollector<'b, 'a, 'v> {
     fn is_root(&self, def_id: DefId) -> bool {
-        !item_has_type_parameters(self.tcx, def_id) && match self.mode {
+        !item_requires_monomorphization(self.tcx, def_id) && match self.mode {
             MonoItemCollectionMode::Eager => {
                 true
             }
@@ -1101,7 +1101,7 @@ impl<'b, 'a, 'v> RootCollector<'b, 'a, 'v> {
     }
 }
 
-fn item_has_type_parameters<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>, def_id: DefId) -> bool {
+fn item_requires_monomorphization<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>, def_id: DefId) -> bool {
     let generics = tcx.generics_of(def_id);
     generics.requires_monomorphization(tcx)
 }

src/librustc_save_analysis/dump_visitor.rs

@@ -659,7 +659,7 @@ impl<'l, 'tcx: 'l, 'll, O: DumpOutput + 'll> DumpVisitor<'l, 'tcx, 'll, O> {
     fn process_impl(
         &mut self,
         item: &'l ast::Item,
-        type_parameters: &'l ast::Generics,
+        generics: &'l ast::Generics,
         trait_ref: &'l Option<ast::TraitRef>,
         typ: &'l ast::Ty,
         impl_items: &'l [ast::ImplItem],
@@ -678,7 +678,7 @@ impl<'l, 'tcx: 'l, 'll, O: DumpOutput + 'll> DumpVisitor<'l, 'tcx, 'll, O> {
         if let &Some(ref trait_ref) = trait_ref {
             self.process_path(trait_ref.ref_id, &trait_ref.path);
         }
-        self.process_generic_params(type_parameters, "", item.id);
+        self.process_generic_params(generics, "", item.id);
         for impl_item in impl_items {
             let map = &self.tcx.hir();
             self.process_impl_item(impl_item, map.local_def_id(item.id));

src/librustc_typeck/check/mod.rs

@@ -2544,7 +2544,7 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
             Neither if self.type_var_diverges(ty) => self.tcx.mk_diverging_default(),
             Neither => return false,
         };
-        debug!("default_type_parameters: defaulting `{:?}` to `{:?}`", ty, fallback);
+        debug!("fallback_if_possible: defaulting `{:?}` to `{:?}`", ty, fallback);
         self.demand_eqtype(syntax_pos::DUMMY_SP, ty, fallback);
         true
     }

src/librustc_typeck/check/wfcheck.rs

@@ -1,5 +1,5 @@
 use crate::check::{Inherited, FnCtxt};
-use crate::constrained_type_params::{identify_constrained_type_params, Parameter};
+use crate::constrained_generic_params::{identify_constrained_generic_params, Parameter};
 
 use crate::hir::def_id::DefId;
 use rustc::traits::{self, ObligationCauseCode};
@@ -941,7 +941,7 @@ fn check_variances_for_type_defn<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
                         .map(|(index, _)| Parameter(index as u32))
                         .collect();
 
-    identify_constrained_type_params(tcx,
+    identify_constrained_generic_params(tcx,
                                      &ty_predicates,
                                      None,
                                      &mut constrained_parameters);

src/librustc_typeck/collect.rs

@@ -15,7 +15,7 @@
 //! crate as a kind of pass. This should eventually be factored away.
 
 use crate::astconv::{AstConv, Bounds};
-use crate::constrained_type_params as ctp;
+use crate::constrained_generic_params as ctp;
 use crate::check::intrinsic::intrisic_operation_unsafety;
 use crate::lint;
 use crate::middle::lang_items::SizedTraitLangItem;

src/librustc_typeck/constrained_type_params.rs → src/librustc_typeck/constrained_generic_params.rs

@@ -86,7 +86,7 @@ impl<'tcx> TypeVisitor<'tcx> for ParameterCollector {
     }
 }
 
-pub fn identify_constrained_type_params<'tcx>(tcx: TyCtxt<'_, 'tcx, 'tcx>,
+pub fn identify_constrained_generic_params<'tcx>(tcx: TyCtxt<'_, 'tcx, 'tcx>,
                                               predicates: &ty::GenericPredicates<'tcx>,
                                               impl_trait_ref: Option<ty::TraitRef<'tcx>>,
                                               input_parameters: &mut FxHashSet<Parameter>)

src/librustc_typeck/impl_wf_check.rs

@@ -8,7 +8,7 @@
 //! specialization errors. These things can (and probably should) be
 //! fixed, but for the moment it's easier to do these checks early.
 
-use crate::constrained_type_params as ctp;
+use crate::constrained_generic_params as ctp;
 use rustc::hir;
 use rustc::hir::itemlikevisit::ItemLikeVisitor;
 use rustc::hir::def_id::DefId;
@@ -103,7 +103,7 @@ fn enforce_impl_params_are_constrained<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
     let impl_trait_ref = tcx.impl_trait_ref(impl_def_id);
 
     let mut input_parameters = ctp::parameters_for_impl(impl_self_ty, impl_trait_ref);
-    ctp::identify_constrained_type_params(
+    ctp::identify_constrained_generic_params(
         tcx, &impl_predicates, impl_trait_ref, &mut input_parameters);
 
     // Disallow unconstrained lifetimes, but only if they appear in assoc types.

src/librustc_typeck/lib.rs

@@ -88,7 +88,7 @@ mod check;
 mod check_unused;
 mod coherence;
 mod collect;
-mod constrained_type_params;
+mod constrained_generic_params;
 mod structured_errors;
 mod impl_wf_check;
 mod namespace;

src/libsyntax/visit.rs

@@ -244,24 +244,24 @@ pub fn walk_item<'a, V: Visitor<'a>>(visitor: &mut V, item: &'a Item) {
             walk_list!(visitor, visit_foreign_item, &foreign_module.items);
         }
         ItemKind::GlobalAsm(ref ga) => visitor.visit_global_asm(ga),
-        ItemKind::Ty(ref typ, ref type_parameters) => {
+        ItemKind::Ty(ref typ, ref generics) => {
             visitor.visit_ty(typ);
-            visitor.visit_generics(type_parameters)
+            visitor.visit_generics(generics)
         }
-        ItemKind::Existential(ref bounds, ref type_parameters) => {
+        ItemKind::Existential(ref bounds, ref generics) => {
             walk_list!(visitor, visit_param_bound, bounds);
-            visitor.visit_generics(type_parameters)
+            visitor.visit_generics(generics)
         }
-        ItemKind::Enum(ref enum_definition, ref type_parameters) => {
-            visitor.visit_generics(type_parameters);
-            visitor.visit_enum_def(enum_definition, type_parameters, item.id, item.span)
+        ItemKind::Enum(ref enum_definition, ref generics) => {
+            visitor.visit_generics(generics);
+            visitor.visit_enum_def(enum_definition, generics, item.id, item.span)
         }
         ItemKind::Impl(_, _, _,
-                 ref type_parameters,
+                 ref generics,
                  ref opt_trait_reference,
                  ref typ,
                  ref impl_items) => {
-            visitor.visit_generics(type_parameters);
+            visitor.visit_generics(generics);
             walk_list!(visitor, visit_trait_ref, opt_trait_reference);
             visitor.visit_ty(typ);
             walk_list!(visitor, visit_impl_item, impl_items);