fromJson static method

LocationResponse? fromJson(dynamic value)

Returns a new LocationResponse instance and imports its values from value if it's a Map, null otherwise.

Implementation

// ignore: prefer_constructors_over_static_methods
static LocationResponse? fromJson(dynamic value) {
  if (value is Map) {
    final json = value.cast<String, dynamic>();

    // Ensure that the map contains the required keys.
    // Note 1: the values aren't checked for validity beyond being non-null.
    // Note 2: this code is stripped in release mode!
    assert(() {
      assert(json.containsKey(r'continent_code'),
          'Required key "LocationResponse[continent_code]" is missing from JSON.');
      assert(json[r'continent_code'] != null,
          'Required key "LocationResponse[continent_code]" has a null value in JSON.');
      assert(json.containsKey(r'country_iso_code'),
          'Required key "LocationResponse[country_iso_code]" is missing from JSON.');
      assert(json[r'country_iso_code'] != null,
          'Required key "LocationResponse[country_iso_code]" has a null value in JSON.');
      assert(json.containsKey(r'subdivision_iso_code'),
          'Required key "LocationResponse[subdivision_iso_code]" is missing from JSON.');
      assert(json[r'subdivision_iso_code'] != null,
          'Required key "LocationResponse[subdivision_iso_code]" has a null value in JSON.');
      return true;
    }());

    return LocationResponse(
      continentCode: mapValueOfType<String>(json, r'continent_code')!,
      countryIsoCode: mapValueOfType<String>(json, r'country_iso_code')!,
      subdivisionIsoCode:
          mapValueOfType<String>(json, r'subdivision_iso_code')!,
    );
  }
  return null;
}