Add <'_> where necessary

Author: flip1995

clippy_lints/src/arithmetic.rs

@@ -113,7 +113,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Arithmetic {
         }
     }
 
-    fn check_body(&mut self, cx: &LateContext<'_, '_>, body: &hir::Body) {
+    fn check_body(&mut self, cx: &LateContext<'_, '_>, body: &hir::Body<'_>) {
         let body_owner = cx.tcx.hir().body_owner(body.id());
 
         match cx.tcx.hir().body_owner_kind(body_owner) {
@@ -131,7 +131,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Arithmetic {
         }
     }
 
-    fn check_body_post(&mut self, cx: &LateContext<'_, '_>, body: &hir::Body) {
+    fn check_body_post(&mut self, cx: &LateContext<'_, '_>, body: &hir::Body<'_>) {
         let body_owner = cx.tcx.hir().body_owner(body.id());
         let body_span = cx.tcx.hir().span(body_owner);
 

clippy_lints/src/attrs.rs

@@ -224,7 +224,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Attributes {
         }
     }
 
-    fn check_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx Item) {
+    fn check_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx Item<'_>) {
         if is_relevant_item(cx, item) {
             check_attrs(cx, item.span, item.ident.name, &item.attrs)
         }
@@ -295,13 +295,13 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Attributes {
         }
     }
 
-    fn check_impl_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx ImplItem) {
+    fn check_impl_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx ImplItem<'_>) {
         if is_relevant_impl(cx, item) {
             check_attrs(cx, item.span, item.ident.name, &item.attrs)
         }
     }
 
-    fn check_trait_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx TraitItem) {
+    fn check_trait_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx TraitItem<'_>) {
         if is_relevant_trait(cx, item) {
             check_attrs(cx, item.span, item.ident.name, &item.attrs)
         }
@@ -355,22 +355,22 @@ fn check_clippy_lint_names(cx: &LateContext<'_, '_>, items: &[NestedMetaItem]) {
     }
 }
 
-fn is_relevant_item(cx: &LateContext<'_, '_>, item: &Item) -> bool {
+fn is_relevant_item(cx: &LateContext<'_, '_>, item: &Item<'_>) -> bool {
     if let ItemKind::Fn(_, _, eid) = item.kind {
         is_relevant_expr(cx, cx.tcx.body_tables(eid), &cx.tcx.hir().body(eid).value)
     } else {
         true
     }
 }
 
-fn is_relevant_impl(cx: &LateContext<'_, '_>, item: &ImplItem) -> bool {
+fn is_relevant_impl(cx: &LateContext<'_, '_>, item: &ImplItem<'_>) -> bool {
     match item.kind {
         ImplItemKind::Method(_, eid) => is_relevant_expr(cx, cx.tcx.body_tables(eid), &cx.tcx.hir().body(eid).value),
         _ => false,
     }
 }
 
-fn is_relevant_trait(cx: &LateContext<'_, '_>, item: &TraitItem) -> bool {
+fn is_relevant_trait(cx: &LateContext<'_, '_>, item: &TraitItem<'_>) -> bool {
     match item.kind {
         TraitItemKind::Method(_, TraitMethod::Required(_)) => true,
         TraitItemKind::Method(_, TraitMethod::Provided(eid)) => {

clippy_lints/src/booleans.rs

@@ -61,7 +61,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for NonminimalBool {
         cx: &LateContext<'a, 'tcx>,
         _: intravisit::FnKind<'tcx>,
         _: &'tcx FnDecl,
-        body: &'tcx Body,
+        body: &'tcx Body<'_>,
         _: Span,
         _: HirId,
     ) {

clippy_lints/src/cognitive_complexity.rs

@@ -48,7 +48,7 @@ impl CognitiveComplexity {
         cx: &'a LateContext<'a, 'tcx>,
         kind: FnKind<'tcx>,
         decl: &'tcx FnDecl,
-        body: &'tcx Body,
+        body: &'tcx Body<'_>,
         body_span: Span,
     ) {
         if body_span.from_expansion() {
@@ -117,7 +117,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for CognitiveComplexity {
         cx: &LateContext<'a, 'tcx>,
         kind: FnKind<'tcx>,
         decl: &'tcx FnDecl,
-        body: &'tcx Body,
+        body: &'tcx Body<'_>,
         span: Span,
         hir_id: HirId,
     ) {

clippy_lints/src/copy_iterator.rs

@@ -33,7 +33,7 @@ declare_clippy_lint! {
 declare_lint_pass!(CopyIterator => [COPY_ITERATOR]);
 
 impl<'a, 'tcx> LateLintPass<'a, 'tcx> for CopyIterator {
-    fn check_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx Item) {
+    fn check_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx Item<'_>) {
         if let ItemKind::Impl(_, _, _, _, Some(ref trait_ref), _, _) = item.kind {
             let ty = cx.tcx.type_of(cx.tcx.hir().local_def_id(item.hir_id));
 

clippy_lints/src/derive.rs

@@ -66,7 +66,7 @@ declare_clippy_lint! {
 declare_lint_pass!(Derive => [EXPL_IMPL_CLONE_ON_COPY, DERIVE_HASH_XOR_EQ]);
 
 impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Derive {
-    fn check_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx Item) {
+    fn check_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx Item<'_>) {
         if let ItemKind::Impl(_, _, _, _, Some(ref trait_ref), _, _) = item.kind {
             let ty = cx.tcx.type_of(cx.tcx.hir().local_def_id(item.hir_id));
             let is_automatically_derived = is_automatically_derived(&*item.attrs);
@@ -130,7 +130,7 @@ fn check_hash_peq<'a, 'tcx>(
 }
 
 /// Implementation of the `EXPL_IMPL_CLONE_ON_COPY` lint.
-fn check_copy_clone<'a, 'tcx>(cx: &LateContext<'a, 'tcx>, item: &Item, trait_ref: &TraitRef, ty: Ty<'tcx>) {
+fn check_copy_clone<'a, 'tcx>(cx: &LateContext<'a, 'tcx>, item: &Item<'_>, trait_ref: &TraitRef, ty: Ty<'tcx>) {
     if match_path(&trait_ref.path, &paths::CLONE_TRAIT) {
         if !is_copy(cx, ty) {
             return;

clippy_lints/src/doc.rs

@@ -146,11 +146,11 @@ impl DocMarkdown {
 impl_lint_pass!(DocMarkdown => [DOC_MARKDOWN, MISSING_SAFETY_DOC, MISSING_ERRORS_DOC, NEEDLESS_DOCTEST_MAIN]);
 
 impl<'a, 'tcx> LateLintPass<'a, 'tcx> for DocMarkdown {
-    fn check_crate(&mut self, cx: &LateContext<'a, 'tcx>, krate: &'tcx hir::Crate) {
+    fn check_crate(&mut self, cx: &LateContext<'a, 'tcx>, krate: &'tcx hir::Crate<'_>) {
         check_attrs(cx, &self.valid_idents, &krate.attrs);
     }
 
-    fn check_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx hir::Item) {
+    fn check_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx hir::Item<'_>) {
         let headers = check_attrs(cx, &self.valid_idents, &item.attrs);
         match item.kind {
             hir::ItemKind::Fn(ref sig, ..) => {
@@ -163,20 +163,20 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for DocMarkdown {
         }
     }
 
-    fn check_item_post(&mut self, _cx: &LateContext<'a, 'tcx>, item: &'tcx hir::Item) {
+    fn check_item_post(&mut self, _cx: &LateContext<'a, 'tcx>, item: &'tcx hir::Item<'_>) {
         if let hir::ItemKind::Impl(..) = item.kind {
             self.in_trait_impl = false;
         }
     }
 
-    fn check_trait_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx hir::TraitItem) {
+    fn check_trait_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx hir::TraitItem<'_>) {
         let headers = check_attrs(cx, &self.valid_idents, &item.attrs);
         if let hir::TraitItemKind::Method(ref sig, ..) = item.kind {
             lint_for_missing_headers(cx, item.hir_id, item.span, sig, headers);
         }
     }
 
-    fn check_impl_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx hir::ImplItem) {
+    fn check_impl_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx hir::ImplItem<'_>) {
         let headers = check_attrs(cx, &self.valid_idents, &item.attrs);
         if self.in_trait_impl {
             return;

clippy_lints/src/empty_enum.rs

@@ -27,7 +27,7 @@ declare_clippy_lint! {
 declare_lint_pass!(EmptyEnum => [EMPTY_ENUM]);
 
 impl<'a, 'tcx> LateLintPass<'a, 'tcx> for EmptyEnum {
-    fn check_item(&mut self, cx: &LateContext<'_, '_>, item: &Item) {
+    fn check_item(&mut self, cx: &LateContext<'_, '_>, item: &Item<'_>) {
         let did = cx.tcx.hir().local_def_id(item.hir_id);
         if let ItemKind::Enum(..) = item.kind {
             let ty = cx.tcx.type_of(did);

clippy_lints/src/enum_clike.rs

@@ -41,7 +41,7 @@ declare_lint_pass!(UnportableVariant => [ENUM_CLIKE_UNPORTABLE_VARIANT]);
 
 impl<'a, 'tcx> LateLintPass<'a, 'tcx> for UnportableVariant {
     #[allow(clippy::cast_possible_truncation, clippy::cast_possible_wrap, clippy::cast_sign_loss)]
-    fn check_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx Item) {
+    fn check_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx Item<'_>) {
         if cx.tcx.data_layout.pointer_size.bits() != 64 {
             return;
         }

clippy_lints/src/enum_glob_use.rs

@@ -29,7 +29,7 @@ declare_clippy_lint! {
 declare_lint_pass!(EnumGlobUse => [ENUM_GLOB_USE]);
 
 impl<'a, 'tcx> LateLintPass<'a, 'tcx> for EnumGlobUse {
-    fn check_mod(&mut self, cx: &LateContext<'a, 'tcx>, m: &'tcx Mod, _: Span, _: HirId) {
+    fn check_mod(&mut self, cx: &LateContext<'a, 'tcx>, m: &'tcx Mod<'_>, _: Span, _: HirId) {
         let map = cx.tcx.hir();
         // only check top level `use` statements
         for item in &m.item_ids {
@@ -38,7 +38,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for EnumGlobUse {
     }
 }
 
-fn lint_item(cx: &LateContext<'_, '_>, item: &Item) {
+fn lint_item(cx: &LateContext<'_, '_>, item: &Item<'_>) {
     if item.vis.node.is_pub() {
         return; // re-exports are fine
     }