1 use super::EXPLICIT_INTO_ITER_LOOP;
2 use clippy_utils::diagnostics::span_lint_and_sugg;
3 use clippy_utils::is_trait_method;
4 use clippy_utils::source::snippet_with_applicability;
5 use rustc_errors::Applicability;
7 use rustc_lint::LateContext;
8 use rustc_middle::ty::TyS;
9 use rustc_span::symbol::sym;
11 pub(super) fn check(cx: &LateContext<'_>, self_arg: &'hir Expr<'hir>, call_expr: &Expr<'_>) {
12 let self_ty = cx.typeck_results().expr_ty(self_arg);
13 let self_ty_adjusted = cx.typeck_results().expr_ty_adjusted(self_arg);
14 if !(TyS::same_type(self_ty, self_ty_adjusted) && is_trait_method(cx, call_expr, sym::IntoIterator)) {
18 let mut applicability = Applicability::MachineApplicable;
19 let object = snippet_with_applicability(cx, self_arg.span, "_", &mut applicability);
22 EXPLICIT_INTO_ITER_LOOP,
24 "it is more concise to loop over containers instead of using explicit \
26 "to write this more concisely, try",