diff options
Diffstat (limited to 'src/tools/clippy/clippy_lints/src/methods/unnecessary_to_owned.rs')
| -rw-r--r-- | src/tools/clippy/clippy_lints/src/methods/unnecessary_to_owned.rs | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/src/tools/clippy/clippy_lints/src/methods/unnecessary_to_owned.rs b/src/tools/clippy/clippy_lints/src/methods/unnecessary_to_owned.rs index 763bfafec..3566fe9a0 100644 --- a/src/tools/clippy/clippy_lints/src/methods/unnecessary_to_owned.rs +++ b/src/tools/clippy/clippy_lints/src/methods/unnecessary_to_owned.rs @@ -1,6 +1,5 @@ use super::implicit_clone::is_clone_like; use super::unnecessary_iter_cloned::{self, is_into_iter}; -use crate::rustc_middle::ty::Subst; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_opt; use clippy_utils::ty::{get_associated_type, get_iterator_item_ty, implements_trait, is_copy, peel_mid_ty_refs}; @@ -8,7 +7,8 @@ use clippy_utils::visitors::find_all_ret_expressions; use clippy_utils::{fn_def_id, get_parent_expr, is_diag_item_method, is_diag_trait_item, return_ty}; use clippy_utils::{meets_msrv, msrvs}; use rustc_errors::Applicability; -use rustc_hir::{def_id::DefId, BorrowKind, Expr, ExprKind, ItemKind, Node}; +use rustc_hir::{def_id::DefId, BorrowKind, Expr, ExprKind, ItemKind, LangItem, Node}; +use rustc_hir_typeck::{FnCtxt, Inherited}; use rustc_infer::infer::TyCtxtInferExt; use rustc_lint::LateContext; use rustc_middle::mir::Mutability; @@ -19,7 +19,6 @@ use rustc_middle::ty::{self, ParamTy, PredicateKind, ProjectionPredicate, TraitP use rustc_semver::RustcVersion; use rustc_span::{sym, Symbol}; use rustc_trait_selection::traits::{query::evaluate_obligation::InferCtxtExt as _, Obligation, ObligationCause}; -use rustc_typeck::check::{FnCtxt, Inherited}; use std::cmp::max; use super::UNNECESSARY_TO_OWNED; @@ -133,12 +132,11 @@ fn check_addr_of_expr( cx, UNNECESSARY_TO_OWNED, parent.span, - &format!("unnecessary use of `{}`", method_name), + &format!("unnecessary use of `{method_name}`"), "use", format!( - "{:&>width$}{}", + "{:&>width$}{receiver_snippet}", "", - receiver_snippet, width = n_target_refs - n_receiver_refs ), Applicability::MachineApplicable, @@ -155,7 +153,7 @@ fn check_addr_of_expr( cx, UNNECESSARY_TO_OWNED, parent.span, - &format!("unnecessary use of `{}`", method_name), + &format!("unnecessary use of `{method_name}`"), "use", receiver_snippet, Applicability::MachineApplicable, @@ -165,7 +163,7 @@ fn check_addr_of_expr( cx, UNNECESSARY_TO_OWNED, expr.span.with_lo(receiver.span.hi()), - &format!("unnecessary use of `{}`", method_name), + &format!("unnecessary use of `{method_name}`"), "remove this", String::new(), Applicability::MachineApplicable, @@ -182,9 +180,9 @@ fn check_addr_of_expr( cx, UNNECESSARY_TO_OWNED, parent.span, - &format!("unnecessary use of `{}`", method_name), + &format!("unnecessary use of `{method_name}`"), "use", - format!("{}.as_ref()", receiver_snippet), + format!("{receiver_snippet}.as_ref()"), Applicability::MachineApplicable, ); return true; @@ -229,9 +227,9 @@ fn check_into_iter_call_arg( cx, UNNECESSARY_TO_OWNED, parent.span, - &format!("unnecessary use of `{}`", method_name), + &format!("unnecessary use of `{method_name}`"), "use", - format!("{}.iter().{}()", receiver_snippet, cloned_or_copied), + format!("{receiver_snippet}.iter().{cloned_or_copied}()"), Applicability::MaybeIncorrect, ); return true; @@ -269,16 +267,16 @@ fn check_other_call_arg<'tcx>( // We can't add an `&` when the trait is `Deref` because `Target = &T` won't match // `Target = T`. if n_refs > 0 || is_copy(cx, receiver_ty) || trait_predicate.def_id() != deref_trait_id; - let n_refs = max(n_refs, if is_copy(cx, receiver_ty) { 0 } else { 1 }); + let n_refs = max(n_refs, usize::from(!is_copy(cx, receiver_ty))); if let Some(receiver_snippet) = snippet_opt(cx, receiver.span); then { span_lint_and_sugg( cx, UNNECESSARY_TO_OWNED, maybe_arg.span, - &format!("unnecessary use of `{}`", method_name), + &format!("unnecessary use of `{method_name}`"), "use", - format!("{:&>width$}{}", "", receiver_snippet, width = n_refs), + format!("{:&>n_refs$}{receiver_snippet}", ""), Applicability::MachineApplicable, ); return true; @@ -365,7 +363,7 @@ fn can_change_type<'a>(cx: &LateContext<'a>, mut expr: &'a Expr<'a>, mut ty: Ty< && let output_ty = return_ty(cx, item.hir_id()) && let local_def_id = cx.tcx.hir().local_def_id(item.hir_id()) && Inherited::build(cx.tcx, local_def_id).enter(|inherited| { - let fn_ctxt = FnCtxt::new(&inherited, cx.param_env, item.hir_id()); + let fn_ctxt = FnCtxt::new(inherited, cx.param_env, item.hir_id()); fn_ctxt.can_coerce(ty, output_ty) }) { if has_lifetime(output_ty) && has_lifetime(ty) { @@ -380,6 +378,10 @@ fn can_change_type<'a>(cx: &LateContext<'a>, mut expr: &'a Expr<'a>, mut ty: Ty< Node::Expr(parent_expr) => { if let Some((callee_def_id, call_substs, recv, call_args)) = get_callee_substs_and_args(cx, parent_expr) { + if cx.tcx.lang_items().require(LangItem::IntoFutureIntoFuture) == Ok(callee_def_id) { + return false; + } + let fn_sig = cx.tcx.fn_sig(callee_def_id).skip_binder(); if let Some(arg_index) = recv.into_iter().chain(call_args).position(|arg| arg.hir_id == expr.hir_id) && let Some(param_ty) = fn_sig.inputs().get(arg_index) @@ -418,9 +420,7 @@ fn can_change_type<'a>(cx: &LateContext<'a>, mut expr: &'a Expr<'a>, mut ty: Ty< if trait_predicates.any(|predicate| { let predicate = EarlyBinder(predicate).subst(cx.tcx, new_subst); let obligation = Obligation::new(ObligationCause::dummy(), cx.param_env, predicate); - !cx.tcx - .infer_ctxt() - .enter(|infcx| infcx.predicate_must_hold_modulo_regions(&obligation)) + !cx.tcx.infer_ctxt().build().predicate_must_hold_modulo_regions(&obligation) }) { return false; } |