{"ast_node_type":"variable","tokens":[{"end":46,"kind":"keyword","start":0,"text":"if"}]}
            if let ty::Adt(adt, _) = ty.kind()
        let detect_dotdot = |err: &mut Diag<'_>, ty: Ty<'_>, expr: &hir::Expr<'_>| {
                && self.tcx().is_lang_item(adt.did(), hir::LangItem::RangeFull)