[rustc.git] / src / tools / clippy / clippy_lints / src / loops / iter_next_loop.rs

use super::ITER_NEXT_LOOP;
use clippy_utils::diagnostics::span_lint;
use clippy_utils::is_trait_method;
use rustc_hir::Expr;
use rustc_lint::LateContext;
use rustc_span::sym;

pub(super) fn check(cx: &LateContext<'_>, arg: &Expr<'_>) {
    if is_trait_method(cx, arg, sym::Iterator) {
        span_lint(
            cx,
            ITER_NEXT_LOOP,
            arg.span,
            "you are iterating over `Iterator::next()` which is an Option; this will compile but is \
            probably not what you want",
        );
    }
}
Commit	Line	Data
f20569fa	1	use super::ITER_NEXT_LOOP;
cdc7bbd5 XL	2	use clippy_utils::diagnostics::span_lint;
cdc7bbd5 XL	3	use clippy_utils::is_trait_method;
f20569fa XL	4	use rustc_hir::Expr;
f20569fa XL	5	use rustc_lint::LateContext;
cdc7bbd5	6	use rustc_span::sym;
f20569fa	7
2b03887a	8	pub(super) fn check(cx: &LateContext<'_>, arg: &Expr<'_>) {
cdc7bbd5	9	if is_trait_method(cx, arg, sym::Iterator) {
f20569fa XL	10	span_lint(
	11	cx,
	12	ITER_NEXT_LOOP,
c295e0f8	13	arg.span,
f20569fa XL	14	"you are iterating over `Iterator::next()` which is an Option; this will compile but is \
	15	probably not what you want",
	16	);
f20569fa XL	17	}
f20569fa XL	18	}