Auto merge of #8190 - camsteffen:no-in-band-liftetimes, r=flip1995

Stop using `in_band_lifetimes`

Per rust-lang/rust#91867

changelog: none

clippy_utils/src/consts.rs

@@ -223,7 +223,7 @@ pub fn constant_simple<'tcx>(
     constant(lcx, typeck_results, e).and_then(|(cst, res)| if res { None } else { Some(cst) })
 }
 
-pub fn constant_full_int(
+pub fn constant_full_int<'tcx>(
     lcx: &LateContext<'tcx>,
     typeck_results: &ty::TypeckResults<'tcx>,
     e: &Expr<'_>,

clippy_utils/src/eager_or_lazy.rs

@@ -45,7 +45,12 @@ impl ops::BitOrAssign for EagernessSuggestion {
 }
 
 /// Determine the eagerness of the given function call.
-fn fn_eagerness(cx: &LateContext<'tcx>, fn_id: DefId, name: Symbol, args: &'tcx [Expr<'_>]) -> EagernessSuggestion {
+fn fn_eagerness<'tcx>(
+    cx: &LateContext<'tcx>,
+    fn_id: DefId,
+    name: Symbol,
+    args: &'tcx [Expr<'_>],
+) -> EagernessSuggestion {
     use EagernessSuggestion::{Eager, Lazy, NoChange};
     let name = name.as_str();
 
@@ -92,7 +97,7 @@ fn fn_eagerness(cx: &LateContext<'tcx>, fn_id: DefId, name: Symbol, args: &'tcx
 }
 
 #[allow(clippy::too_many_lines)]
-fn expr_eagerness(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> EagernessSuggestion {
+fn expr_eagerness<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> EagernessSuggestion {
     struct V<'cx, 'tcx> {
         cx: &'cx LateContext<'tcx>,
         eagerness: EagernessSuggestion,
@@ -225,11 +230,11 @@ fn expr_eagerness(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> EagernessSuggest
 }
 
 /// Whether the given expression should be changed to evaluate eagerly
-pub fn switch_to_eager_eval(cx: &'_ LateContext<'tcx>, expr: &'tcx Expr<'_>) -> bool {
+pub fn switch_to_eager_eval<'tcx>(cx: &'_ LateContext<'tcx>, expr: &'tcx Expr<'_>) -> bool {
     expr_eagerness(cx, expr) == EagernessSuggestion::Eager
 }
 
 /// Whether the given expression should be changed to evaluate lazily
-pub fn switch_to_lazy_eval(cx: &'_ LateContext<'tcx>, expr: &'tcx Expr<'_>) -> bool {
+pub fn switch_to_lazy_eval<'tcx>(cx: &'_ LateContext<'tcx>, expr: &'tcx Expr<'_>) -> bool {
     expr_eagerness(cx, expr) == EagernessSuggestion::Lazy
 }

clippy_utils/src/lib.rs

@@ -1,6 +1,5 @@
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]
-#![feature(in_band_lifetimes)]
 #![feature(let_else)]
 #![feature(once_cell)]
 #![feature(rustc_private)]
@@ -128,7 +127,7 @@ macro_rules! extract_msrv_attr {
         extract_msrv_attr!(@EarlyContext);
     };
     (@$context:ident$(, $call:tt)?) => {
-        fn enter_lint_attrs(&mut self, cx: &rustc_lint::$context<'tcx>, attrs: &'tcx [rustc_ast::ast::Attribute]) {
+        fn enter_lint_attrs(&mut self, cx: &rustc_lint::$context<'_>, attrs: &[rustc_ast::ast::Attribute]) {
             use $crate::get_unique_inner_attr;
             match get_unique_inner_attr(cx.sess$($call)?, attrs, "msrv") {
                 Some(msrv_attr) => {
@@ -277,7 +276,11 @@ pub fn is_wild(pat: &Pat<'_>) -> bool {
 }
 
 /// Checks if the first type parameter is a lang item.
-pub fn is_ty_param_lang_item(cx: &LateContext<'_>, qpath: &QPath<'tcx>, item: LangItem) -> Option<&'tcx hir::Ty<'tcx>> {
+pub fn is_ty_param_lang_item<'tcx>(
+    cx: &LateContext<'_>,
+    qpath: &QPath<'tcx>,
+    item: LangItem,
+) -> Option<&'tcx hir::Ty<'tcx>> {
     let ty = get_qpath_generic_tys(qpath).next()?;
 
     if let TyKind::Path(qpath) = &ty.kind {
@@ -293,7 +296,7 @@ pub fn is_ty_param_lang_item(cx: &LateContext<'_>, qpath: &QPath<'tcx>, item: La
 }
 
 /// Checks if the first type parameter is a diagnostic item.
-pub fn is_ty_param_diagnostic_item(
+pub fn is_ty_param_diagnostic_item<'tcx>(
     cx: &LateContext<'_>,
     qpath: &QPath<'tcx>,
     item: Symbol,
@@ -370,7 +373,7 @@ pub fn last_path_segment<'tcx>(path: &QPath<'tcx>) -> &'tcx PathSegment<'tcx> {
     }
 }
 
-pub fn get_qpath_generics(path: &QPath<'tcx>) -> Option<&'tcx GenericArgs<'tcx>> {
+pub fn get_qpath_generics<'tcx>(path: &QPath<'tcx>) -> Option<&'tcx GenericArgs<'tcx>> {
     match path {
         QPath::Resolved(_, p) => p.segments.last().and_then(|s| s.args),
         QPath::TypeRelative(_, s) => s.args,
@@ -378,7 +381,7 @@ pub fn get_qpath_generics(path: &QPath<'tcx>) -> Option<&'tcx GenericArgs<'tcx>>
     }
 }
 
-pub fn get_qpath_generic_tys(path: &QPath<'tcx>) -> impl Iterator<Item = &'tcx hir::Ty<'tcx>> {
+pub fn get_qpath_generic_tys<'tcx>(path: &QPath<'tcx>) -> impl Iterator<Item = &'tcx hir::Ty<'tcx>> {
     get_qpath_generics(path)
         .map_or([].as_ref(), |a| a.args)
         .iter()
@@ -767,7 +770,7 @@ pub fn is_default_equivalent(cx: &LateContext<'_>, e: &Expr<'_>) -> bool {
 ///
 /// Note that this check is not recursive, so passing the `if` expression will always return true
 /// even though sub-expressions might return false.
-pub fn can_move_expr_to_closure_no_visit(
+pub fn can_move_expr_to_closure_no_visit<'tcx>(
     cx: &LateContext<'tcx>,
     expr: &'tcx Expr<'_>,
     loop_ids: &[HirId],
@@ -842,7 +845,7 @@ impl std::ops::BitOrAssign for CaptureKind {
 /// Note as this will walk up to parent expressions until the capture can be determined it should
 /// only be used while making a closure somewhere a value is consumed. e.g. a block, match arm, or
 /// function argument (other than a receiver).
-pub fn capture_local_usage(cx: &LateContext<'tcx>, e: &Expr<'_>) -> CaptureKind {
+pub fn capture_local_usage<'tcx>(cx: &LateContext<'tcx>, e: &Expr<'_>) -> CaptureKind {
     fn pat_capture_kind(cx: &LateContext<'_>, pat: &Pat<'_>) -> CaptureKind {
         let mut capture = CaptureKind::Ref(Mutability::Not);
         pat.each_binding_or_first(&mut |_, id, span, _| match cx
@@ -942,7 +945,7 @@ pub fn capture_local_usage(cx: &LateContext<'tcx>, e: &Expr<'_>) -> CaptureKind
 
 /// Checks if the expression can be moved into a closure as is. This will return a list of captures
 /// if so, otherwise, `None`.
-pub fn can_move_expr_to_closure(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) -> Option<HirIdMap<CaptureKind>> {
+pub fn can_move_expr_to_closure<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) -> Option<HirIdMap<CaptureKind>> {
     struct V<'cx, 'tcx> {
         cx: &'cx LateContext<'tcx>,
         // Stack of potential break targets contained in the expression.
@@ -955,7 +958,7 @@ pub fn can_move_expr_to_closure(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) ->
         /// mutable reference.
         captures: HirIdMap<CaptureKind>,
     }
-    impl Visitor<'tcx> for V<'_, 'tcx> {
+    impl<'tcx> Visitor<'tcx> for V<'_, 'tcx> {
         type Map = ErasedMap<'tcx>;
         fn nested_visit_map(&mut self) -> NestedVisitorMap<Self::Map> {
             NestedVisitorMap::None
@@ -1212,7 +1215,7 @@ pub fn get_enclosing_block<'tcx>(cx: &LateContext<'tcx>, hir_id: HirId) -> Optio
 }
 
 /// Gets the loop or closure enclosing the given expression, if any.
-pub fn get_enclosing_loop_or_closure(tcx: TyCtxt<'tcx>, expr: &Expr<'_>) -> Option<&'tcx Expr<'tcx>> {
+pub fn get_enclosing_loop_or_closure<'tcx>(tcx: TyCtxt<'tcx>, expr: &Expr<'_>) -> Option<&'tcx Expr<'tcx>> {
     for (_, node) in tcx.hir().parent_iter(expr.hir_id) {
         match node {
             Node::Expr(
@@ -1720,7 +1723,7 @@ pub fn is_async_fn(kind: FnKind<'_>) -> bool {
 }
 
 /// Peels away all the compiler generated code surrounding the body of an async function,
-pub fn get_async_fn_body(tcx: TyCtxt<'tcx>, body: &Body<'_>) -> Option<&'tcx Expr<'tcx>> {
+pub fn get_async_fn_body<'tcx>(tcx: TyCtxt<'tcx>, body: &Body<'_>) -> Option<&'tcx Expr<'tcx>> {
     if let ExprKind::Call(
         _,
         &[
@@ -1824,7 +1827,7 @@ pub fn is_expr_identity_function(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool
 }
 
 /// Gets the node where an expression is either used, or it's type is unified with another branch.
-pub fn get_expr_use_or_unification_node(tcx: TyCtxt<'tcx>, expr: &Expr<'_>) -> Option<Node<'tcx>> {
+pub fn get_expr_use_or_unification_node<'tcx>(tcx: TyCtxt<'tcx>, expr: &Expr<'_>) -> Option<Node<'tcx>> {
     let mut child_id = expr.hir_id;
     let mut iter = tcx.hir().parent_iter(child_id);
     loop {
@@ -2030,8 +2033,8 @@ where
 
 /// Peels off all references on the pattern. Returns the underlying pattern and the number of
 /// references removed.
-pub fn peel_hir_pat_refs(pat: &'a Pat<'a>) -> (&'a Pat<'a>, usize) {
-    fn peel(pat: &'a Pat<'a>, count: usize) -> (&'a Pat<'a>, usize) {
+pub fn peel_hir_pat_refs<'a>(pat: &'a Pat<'a>) -> (&'a Pat<'a>, usize) {
+    fn peel<'a>(pat: &'a Pat<'a>, count: usize) -> (&'a Pat<'a>, usize) {
         if let PatKind::Ref(pat, _) = pat.kind {
             peel(pat, count + 1)
         } else {
@@ -2054,7 +2057,7 @@ pub fn peel_hir_expr_while<'tcx>(
 
 /// Peels off up to the given number of references on the expression. Returns the underlying
 /// expression and the number of references removed.
-pub fn peel_n_hir_expr_refs(expr: &'a Expr<'a>, count: usize) -> (&'a Expr<'a>, usize) {
+pub fn peel_n_hir_expr_refs<'a>(expr: &'a Expr<'a>, count: usize) -> (&'a Expr<'a>, usize) {
     let mut remaining = count;
     let e = peel_hir_expr_while(expr, |e| match e.kind {
         ExprKind::AddrOf(ast::BorrowKind::Ref, _, e) if remaining != 0 => {
@@ -2068,7 +2071,7 @@ pub fn peel_n_hir_expr_refs(expr: &'a Expr<'a>, count: usize) -> (&'a Expr<'a>,
 
 /// Peels off all references on the expression. Returns the underlying expression and the number of
 /// references removed.
-pub fn peel_hir_expr_refs(expr: &'a Expr<'a>) -> (&'a Expr<'a>, usize) {
+pub fn peel_hir_expr_refs<'a>(expr: &'a Expr<'a>) -> (&'a Expr<'a>, usize) {
     let mut count = 0;
     let e = peel_hir_expr_while(expr, |e| match e.kind {
         ExprKind::AddrOf(ast::BorrowKind::Ref, _, e) => {
@@ -2151,7 +2154,7 @@ impl<'hir> ItemLikeVisitor<'hir> for TestItemNamesVisitor<'hir> {
 
 static TEST_ITEM_NAMES_CACHE: SyncOnceCell<Mutex<FxHashMap<LocalDefId, Vec<Symbol>>>> = SyncOnceCell::new();
 
-fn with_test_item_names(tcx: TyCtxt<'tcx>, module: LocalDefId, f: impl Fn(&[Symbol]) -> bool) -> bool {
+fn with_test_item_names<'tcx>(tcx: TyCtxt<'tcx>, module: LocalDefId, f: impl Fn(&[Symbol]) -> bool) -> bool {
     let cache = TEST_ITEM_NAMES_CACHE.get_or_init(|| Mutex::new(FxHashMap::default()));
     let mut map: MutexGuard<'_, FxHashMap<LocalDefId, Vec<Symbol>>> = cache.lock().unwrap();
     match map.entry(module) {

clippy_utils/src/macros.rs

@@ -283,7 +283,7 @@ fn find_assert_within_debug_assert<'a>(
     found
 }
 
-fn is_assert_arg(cx: &LateContext<'_>, expr: &'a Expr<'a>, assert_expn: ExpnId) -> bool {
+fn is_assert_arg(cx: &LateContext<'_>, expr: &Expr<'_>, assert_expn: ExpnId) -> bool {
     if !expr.span.from_expansion() {
         return true;
     }
@@ -322,7 +322,7 @@ pub struct FormatArgsExpn<'tcx> {
     pub specs: Vec<&'tcx Expr<'tcx>>,
 }
 
-impl FormatArgsExpn<'tcx> {
+impl<'tcx> FormatArgsExpn<'tcx> {
     /// Parses an expanded `format_args!` or `format_args_nl!` invocation
     pub fn parse(cx: &LateContext<'_>, expr: &'tcx Expr<'tcx>) -> Option<Self> {
         macro_backtrace(expr.span).find(|macro_call| {

clippy_utils/src/qualify_min_const_fn.rs

@@ -19,7 +19,7 @@ use std::borrow::Cow;
 
 type McfResult = Result<(), (Span, Cow<'static, str>)>;
 
-pub fn is_min_const_fn(tcx: TyCtxt<'tcx>, body: &'a Body<'tcx>, msrv: Option<&RustcVersion>) -> McfResult {
+pub fn is_min_const_fn<'a, 'tcx>(tcx: TyCtxt<'tcx>, body: &'a Body<'tcx>, msrv: Option<&RustcVersion>) -> McfResult {
     let def_id = body.source.def_id();
     let mut current = def_id;
     loop {
@@ -85,7 +85,7 @@ pub fn is_min_const_fn(tcx: TyCtxt<'tcx>, body: &'a Body<'tcx>, msrv: Option<&Ru
     Ok(())
 }
 
-fn check_ty(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>, span: Span) -> McfResult {
+fn check_ty<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>, span: Span) -> McfResult {
     for arg in ty.walk(tcx) {
         let ty = match arg.unpack() {
             GenericArgKind::Type(ty) => ty,
@@ -133,7 +133,13 @@ fn check_ty(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>, span: Span) -> McfResult {
     Ok(())
 }
 
-fn check_rvalue(tcx: TyCtxt<'tcx>, body: &Body<'tcx>, def_id: DefId, rvalue: &Rvalue<'tcx>, span: Span) -> McfResult {
+fn check_rvalue<'tcx>(
+    tcx: TyCtxt<'tcx>,
+    body: &Body<'tcx>,
+    def_id: DefId,
+    rvalue: &Rvalue<'tcx>,
+    span: Span,
+) -> McfResult {
     match rvalue {
         Rvalue::ThreadLocalRef(_) => Err((span, "cannot access thread local storage in const fn".into())),
         Rvalue::Repeat(operand, _) | Rvalue::Use(operand) => check_operand(tcx, operand, span, body),
@@ -211,7 +217,12 @@ fn check_rvalue(tcx: TyCtxt<'tcx>, body: &Body<'tcx>, def_id: DefId, rvalue: &Rv
     }
 }
 
-fn check_statement(tcx: TyCtxt<'tcx>, body: &Body<'tcx>, def_id: DefId, statement: &Statement<'tcx>) -> McfResult {
+fn check_statement<'tcx>(
+    tcx: TyCtxt<'tcx>,
+    body: &Body<'tcx>,
+    def_id: DefId,
+    statement: &Statement<'tcx>,
+) -> McfResult {
     let span = statement.source_info.span;
     match &statement.kind {
         StatementKind::Assign(box (place, rval)) => {
@@ -240,7 +251,7 @@ fn check_statement(tcx: TyCtxt<'tcx>, body: &Body<'tcx>, def_id: DefId, statemen
     }
 }
 
-fn check_operand(tcx: TyCtxt<'tcx>, operand: &Operand<'tcx>, span: Span, body: &Body<'tcx>) -> McfResult {
+fn check_operand<'tcx>(tcx: TyCtxt<'tcx>, operand: &Operand<'tcx>, span: Span, body: &Body<'tcx>) -> McfResult {
     match operand {
         Operand::Move(place) | Operand::Copy(place) => check_place(tcx, *place, span, body),
         Operand::Constant(c) => match c.check_static_ptr(tcx) {
@@ -250,7 +261,7 @@ fn check_operand(tcx: TyCtxt<'tcx>, operand: &Operand<'tcx>, span: Span, body: &
     }
 }
 
-fn check_place(tcx: TyCtxt<'tcx>, place: Place<'tcx>, span: Span, body: &Body<'tcx>) -> McfResult {
+fn check_place<'tcx>(tcx: TyCtxt<'tcx>, place: Place<'tcx>, span: Span, body: &Body<'tcx>) -> McfResult {
     let mut cursor = place.projection.as_ref();
     while let [ref proj_base @ .., elem] = *cursor {
         cursor = proj_base;
@@ -275,7 +286,7 @@ fn check_place(tcx: TyCtxt<'tcx>, place: Place<'tcx>, span: Span, body: &Body<'t
     Ok(())
 }
 
-fn check_terminator(
+fn check_terminator<'a, 'tcx>(
     tcx: TyCtxt<'tcx>,
     body: &'a Body<'tcx>,
     terminator: &Terminator<'tcx>,

clippy_utils/src/source.rs

@@ -281,7 +281,7 @@ pub fn snippet_block_with_applicability<'a, T: LintContext>(
 /// correctly get a snippet of `vec![]`.
 ///
 /// This will also return whether or not the snippet is a macro call.
-pub fn snippet_with_context(
+pub fn snippet_with_context<'a>(
     cx: &LateContext<'_>,
     span: Span,
     outer: SyntaxContext,

clippy_utils/src/sugg.rs

@@ -461,7 +461,7 @@ impl Neg for Sugg<'_> {
     }
 }
 
-impl Not for Sugg<'a> {
+impl<'a> Not for Sugg<'a> {
     type Output = Sugg<'a>;
     fn not(self) -> Sugg<'a> {
         use AssocOp::{Equal, Greater, GreaterEqual, Less, LessEqual, NotEqual};
@@ -846,7 +846,7 @@ struct DerefDelegate<'a, 'tcx> {
     applicability: Applicability,
 }
 
-impl DerefDelegate<'_, 'tcx> {
+impl<'tcx> DerefDelegate<'_, 'tcx> {
     /// build final suggestion:
     /// - create the ending part of suggestion
     /// - concatenate starting and ending parts

clippy_utils/src/ty.rs

@@ -25,7 +25,7 @@ pub fn is_copy<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool {
 }
 
 /// Checks whether a type can be partially moved.
-pub fn can_partially_move_ty(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool {
+pub fn can_partially_move_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool {
     if has_drop(cx, ty) || is_copy(cx, ty) {
         return false;
     }
@@ -366,7 +366,7 @@ pub fn walk_ptrs_ty_depth(ty: Ty<'_>) -> (Ty<'_>, usize) {
 
 /// Returns `true` if types `a` and `b` are same types having same `Const` generic args,
 /// otherwise returns `false`
-pub fn same_type_and_consts(a: Ty<'tcx>, b: Ty<'tcx>) -> bool {
+pub fn same_type_and_consts<'tcx>(a: Ty<'tcx>, b: Ty<'tcx>) -> bool {
     match (&a.kind(), &b.kind()) {
         (&ty::Adt(did_a, substs_a), &ty::Adt(did_b, substs_b)) => {
             if did_a != did_b {

clippy_utils/src/visitors.rs

@@ -173,7 +173,7 @@ pub trait Visitable<'tcx> {
 }
 macro_rules! visitable_ref {
     ($t:ident, $f:ident) => {
-        impl Visitable<'tcx> for &'tcx $t<'tcx> {
+        impl<'tcx> Visitable<'tcx> for &'tcx $t<'tcx> {
             fn visit<V: Visitor<'tcx>>(self, visitor: &mut V) {
                 visitor.$f(self);
             }
@@ -217,7 +217,7 @@ pub fn is_res_used(cx: &LateContext<'_>, res: Res, body: BodyId) -> bool {
 }
 
 /// Checks if the given local is used.
-pub fn is_local_used(cx: &LateContext<'tcx>, visitable: impl Visitable<'tcx>, id: HirId) -> bool {
+pub fn is_local_used<'tcx>(cx: &LateContext<'tcx>, visitable: impl Visitable<'tcx>, id: HirId) -> bool {
     let mut is_used = false;
     let mut visitor = expr_visitor(cx, |expr| {
         if !is_used {
@@ -231,7 +231,7 @@ pub fn is_local_used(cx: &LateContext<'tcx>, visitable: impl Visitable<'tcx>, id
 }
 
 /// Checks if the given expression is a constant.
-pub fn is_const_evaluatable(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> bool {
+pub fn is_const_evaluatable<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> bool {
     struct V<'a, 'tcx> {
         cx: &'a LateContext<'tcx>,
         is_const: bool,
@@ -321,7 +321,7 @@ pub fn is_const_evaluatable(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> bool {
 }
 
 /// Checks if the given expression performs an unsafe operation outside of an unsafe block.
-pub fn is_expr_unsafe(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> bool {
+pub fn is_expr_unsafe<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> bool {
     struct V<'a, 'tcx> {
         cx: &'a LateContext<'tcx>,
         is_unsafe: bool,