Code analizer

(int) load_data() inline {
    var ds = get_data().begin_parse();
    return (ds~load_uint(64));
}

() save_data(int counter) impure inline {
    set_data(begin_cell()
        .store_uint(counter, 64)
        .end_cell());
}

() recv_internal(int msg_value, cell in_msg, slice in_msg_body) impure {
    int op = in_msg_body~load_uint(32);
    var (counter) = load_data();
    if (op == 1) {
        save_data(counter + 1);
    } else {
        throw(6);
    }
}

int counter() method_id {
    var (counter) = load_data();
    return counter;
}

() recv_external(slice in_msg) impure {
    ;; TODO: implementation  
}

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