{"ast_node_type":"variable","tokens":[{"end":96,"kind":"keyword","start":0,"text":"let"}]}
                                    let Some(op_expr) = op.asm_operand_expr() else { continue };
                                } else if dir_spec.inout_token().is_some() {
                                    let in_expr = self.collect_expr_opt(op_expr.in_expr());