Fix Visitor::NestedFilter in Clippy

clippy_lints/src/methods/option_map_unwrap_or.rs

@@ -5,10 +5,10 @@ use clippy_utils::ty::is_copy;
 use clippy_utils::ty::is_type_diagnostic_item;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_errors::Applicability;
-use rustc_hir::intravisit::{walk_path, NestedVisitorMap, Visitor};
+use rustc_hir::intravisit::{walk_path, Visitor};
 use rustc_hir::{self, HirId, Path};
 use rustc_lint::LateContext;
-use rustc_middle::hir::map::Map;
+use rustc_middle::hir::nested_filter;
 use rustc_span::source_map::Span;
 use rustc_span::{sym, Symbol};
 
@@ -97,15 +97,15 @@ struct UnwrapVisitor<'a, 'tcx> {
 }
 
 impl<'a, 'tcx> Visitor<'tcx> for UnwrapVisitor<'a, 'tcx> {
-    type Map = Map<'tcx>;
+    type NestedFilter = nested_filter::All;
 
     fn visit_path(&mut self, path: &'tcx Path<'_>, _id: HirId) {
         self.identifiers.insert(ident(path));
         walk_path(self, path);
     }
 
-    fn nested_visit_map(&mut self) -> NestedVisitorMap<Self::Map> {
-        NestedVisitorMap::All(self.cx.tcx.hir())
+    fn nested_visit_map(&mut self) -> Self::Map {
+        self.cx.tcx.hir()
     }
 }
 
@@ -116,7 +116,7 @@ struct MapExprVisitor<'a, 'tcx> {
 }
 
 impl<'a, 'tcx> Visitor<'tcx> for MapExprVisitor<'a, 'tcx> {
-    type Map = Map<'tcx>;
+    type NestedFilter = nested_filter::All;
 
     fn visit_path(&mut self, path: &'tcx Path<'_>, _id: HirId) {
         if self.identifiers.contains(&ident(path)) {
@@ -126,8 +126,8 @@ impl<'a, 'tcx> Visitor<'tcx> for MapExprVisitor<'a, 'tcx> {
         walk_path(self, path);
     }
 
-    fn nested_visit_map(&mut self) -> NestedVisitorMap<Self::Map> {
-        NestedVisitorMap::All(self.cx.tcx.hir())
+    fn nested_visit_map(&mut self) -> Self::Map {
+        self.cx.tcx.hir()
     }
 }
 

clippy_lints/src/methods/unnecessary_filter_map.rs

@@ -2,10 +2,9 @@ use clippy_utils::diagnostics::span_lint;
 use clippy_utils::usage::mutated_variables;
 use clippy_utils::{is_lang_ctor, is_trait_method, path_to_local_id};
 use rustc_hir as hir;
-use rustc_hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};
+use rustc_hir::intravisit::{walk_expr, Visitor};
 use rustc_hir::LangItem::{OptionNone, OptionSome};
 use rustc_lint::LateContext;
-use rustc_middle::hir::map::Map;
 use rustc_middle::ty::{self, TyS};
 use rustc_span::sym;
 
@@ -113,8 +112,6 @@ impl<'a, 'tcx> ReturnVisitor<'a, 'tcx> {
 }
 
 impl<'a, 'tcx> Visitor<'tcx> for ReturnVisitor<'a, 'tcx> {
-    type Map = Map<'tcx>;
-
     fn visit_expr(&mut self, expr: &'tcx hir::Expr<'_>) {
         if let hir::ExprKind::Ret(Some(expr)) = &expr.kind {
             let (found_mapping, found_filtering) = check_expression(self.cx, self.arg_id, expr);
@@ -124,8 +121,4 @@ impl<'a, 'tcx> Visitor<'tcx> for ReturnVisitor<'a, 'tcx> {
             walk_expr(self, expr);
         }
     }
-
-    fn nested_visit_map(&mut self) -> NestedVisitorMap<Self::Map> {
-        NestedVisitorMap::None
-    }
 }

clippy_lints/src/methods/unnecessary_iter_cloned.rs

@@ -4,10 +4,11 @@ use clippy_utils::source::snippet_opt;
 use clippy_utils::ty::{get_associated_type, get_iterator_item_ty, implements_trait};
 use clippy_utils::{fn_def_id, get_parent_expr, path_to_local_id, usage};
 use rustc_errors::Applicability;
-use rustc_hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};
+use rustc_hir::intravisit::{walk_expr, Visitor};
 use rustc_hir::{def_id::DefId, BorrowKind, Expr, ExprKind, HirId, LangItem, Mutability, Pat};
 use rustc_lint::LateContext;
-use rustc_middle::{hir::map::Map, ty};
+use rustc_middle::hir::nested_filter;
+use rustc_middle::ty;
 use rustc_span::{sym, Symbol};
 
 use super::UNNECESSARY_TO_OWNED;
@@ -139,10 +140,10 @@ struct CloneOrCopyVisitor<'cx, 'tcx> {
 }
 
 impl<'cx, 'tcx> Visitor<'tcx> for CloneOrCopyVisitor<'cx, 'tcx> {
-    type Map = Map<'tcx>;
+    type NestedFilter = nested_filter::OnlyBodies;
 
-    fn nested_visit_map(&mut self) -> NestedVisitorMap<Self::Map> {
-        NestedVisitorMap::OnlyBodies(self.cx.tcx.hir())
+    fn nested_visit_map(&mut self) -> Self::Map {
+        self.cx.tcx.hir()
     }
 
     fn visit_expr(&mut self, expr: &'tcx Expr<'tcx>) {