text: /*
   * This file is part of the MicroPython project, http://micropython.org/
   *
   * The MIT License (MIT)
   *
   * Copyright (c) 2020 Scott Shawcroft for Adafruit Industries
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  #include "py/objexcept.h"
  #include "py/objstr.h"
  #include "py/parsenum.h"
  #include "py/runtime.h"
  #include "shared-bindings/ipaddress/__init__.h"
  #include "shared-bindings/ipaddress/IPv4Address.h"
  
  //| """
  //| The `ipaddress` module provides types for IP addresses. It is a subset of CPython's ipaddress
  //| module.
  //| """
  //|
  
  
  bool ipaddress_parse_ipv4address(const char *str_data, size_t str_len, uint32_t *ip_out) {
      size_t period_count = 0;
      size_t period_index[4] = {0, 0, 0, str_len};
      for (size_t i = 0; i < str_len; i++) {
          if (str_data[i] == '.') {
              if (period_count < 3) {
                  period_index[period_count] = i;
              }
              period_count++;
          }
      }
      if (period_count > 3) {
          return false;
      }
  
      size_t last_period = 0;
      if (ip_out != NULL) {
          *ip_out = 0;
      }
      for (size_t i = 0; i < 4; i++) {
          // Catch exceptions thrown by mp_parse_num_integer
          nlr_buf_t nlr;
          mp_obj_t octet;
          if (nlr_push(&nlr) == 0) {
              octet = mp_parse_num_integer((const char *)str_data + last_period, period_index[i] - last_period, 10, NULL);
              nlr_pop();
          } else {
              return false;
          }
          last_period = period_index[i] + 1;
          if (ip_out != NULL) {
              mp_int_t int_octet = MP_OBJ_SMALL_INT_VALUE(octet);
              *ip_out |= int_octet << (i * 8);
          }
      }
      return true;
  }
  
  //| def ip_address(obj: Union[int, str]) -> IPv4Address:
  //|     """Return a corresponding IP address object or raise ValueError if not possible."""
  //|     ...
  //|
  
  STATIC mp_obj_t ipaddress_ip_address(mp_obj_t ip_in) {
      uint32_t value;
      if (mp_obj_get_int_maybe(ip_in, (mp_int_t *)&value)) {
          // We're done.
      } else if (mp_obj_is_str(ip_in)) {
          GET_STR_DATA_LEN(ip_in, str_data, str_len);
          if (!ipaddress_parse_ipv4address((const char *)str_data, str_len, &value)) {
              mp_raise_ValueError(translate("Not a valid IP string"));
          }
      } else {
          mp_raise_ValueError(translate("Only raw int or string supported for ip"));
      }
  
      return common_hal_ipaddress_new_ipv4address(value);
  }
  MP_DEFINE_CONST_FUN_OBJ_1(ipaddress_ip_address_obj, ipaddress_ip_address);
  
  STATIC const mp_rom_map_elem_t ipaddress_module_globals_table[] = {
      { MP_ROM_QSTR(MP_QSTR___name__),      MP_ROM_QSTR(MP_QSTR_ipaddress) },
      { MP_ROM_QSTR(MP_QSTR_ip_address),    MP_ROM_PTR(&ipaddress_ip_address_obj) },
      { MP_ROM_QSTR(MP_QSTR_IPv4Address),   MP_ROM_PTR(&ipaddress_ipv4address_type) },
  };
  
  STATIC MP_DEFINE_CONST_DICT(ipaddress_module_globals, ipaddress_module_globals_table);
  
  
  const mp_obj_module_t ipaddress_module = {
      .base = { &mp_type_module },
      .globals = (mp_obj_dict_t *)&ipaddress_module_globals,
  };
  