{"ast_node_type":"variable","tokens":[{"end":81,"kind":"keyword","start":0,"text":"if"}]}
            if let Some(rhs_ty) = self.typeck_results.borrow().expr_ty_opt(rhs) {
        self.check_lhs_assignable(lhs, E0070, span, |err| {
                suggest_deref_binop(err, rhs_ty);