fromJson static method

PositionNMEARMC? fromJson(dynamic value)

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

Implementation

// ignore: prefer_constructors_over_static_methods
static PositionNMEARMC? 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(() {
      requiredKeys.forEach((key) {
        assert(json.containsKey(key),
            'Required key "PositionNMEARMC[$key]" is missing from JSON.');
        assert(json[key] != null,
            'Required key "PositionNMEARMC[$key]" has a null value in JSON.');
      });
      return true;
    }());

    return PositionNMEARMC(
      sentence: mapValueOfType<String>(json, r'sentence'),
      type: mapValueOfType<String>(json, r'type'),
      timestamp: mapValueOfType<String>(json, r'timestamp'),
      status: mapValueOfType<String>(json, r'status'),
      lat: mapValueOfType<String>(json, r'lat'),
      latPole: mapValueOfType<String>(json, r'latPole'),
      lon: mapValueOfType<String>(json, r'lon'),
      lonPole: mapValueOfType<String>(json, r'lonPole'),
      speedKnots: json[r'speedKnots'] == null
          ? null
          : num.parse(json[r'speedKnots'].toString()),
      trackTrue: json[r'trackTrue'] == null
          ? null
          : num.parse(json[r'trackTrue'].toString()),
      date: mapValueOfType<String>(json, r'date'),
      variation: json[r'variation'] == null
          ? null
          : num.parse(json[r'variation'].toString()),
      variationPole: mapValueOfType<String>(json, r'variationPole'),
      talkerId: mapValueOfType<String>(json, r'talker_id'),
    );
  }
  return null;
}