fromJson static method

RunwayContract? fromJson(dynamic value)

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

Implementation

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

    return RunwayContract(
      name: mapValueOfType<String>(json, r'name')!,
      trueHdg: mapValueOfType<double>(json, r'trueHdg')!,
      isClosed: mapValueOfType<bool>(json, r'isClosed')!,
      surface: SurfaceType.fromJson(json[r'surface'])!,
      length: RunwayContractLength.fromJson(json[r'length']),
      width: RunwayContractWidth.fromJson(json[r'width']),
      location: RunwayContractLocation.fromJson(json[r'location']),
      displacedThreshold: RunwayContractDisplacedThreshold.fromJson(
          json[r'displacedThreshold']),
      hasLighting: mapValueOfType<bool>(json, r'hasLighting'),
    );
  }
  return null;
}