fromJson static method

S7ConfigData? fromJson(dynamic value)

Returns a new S7ConfigData instance and imports its values from value if it's a Map, null otherwise.

Implementation

// ignore: prefer_constructors_over_static_methods
static S7ConfigData? 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 "S7ConfigData[$key]" is missing from JSON.');
        assert(json[key] != null,
            'Required key "S7ConfigData[$key]" has a null value in JSON.');
      });
      return true;
    }());

    return S7ConfigData(
      freqMs: mapValueOfType<int>(json, r'freq_ms'),
      rw: S7ConfigDataRwEnum.fromJson(json[r'rw']),
      area: S7ConfigDataAreaEnum.fromJson(json[r'area']),
      db: mapValueOfType<int>(json, r'db'),
      startByte: mapValueOfType<int>(json, r'start_byte'),
      startBit: mapValueOfType<int>(json, r'start_bit'),
      dataType: S7ConfigDataDataTypeEnum.fromJson(json[r'data_type']),
      paramCode: mapValueOfType<String>(json, r'ParamCode'),
      paramDescription: mapValueOfType<String>(json, r'ParamDescription'),
    );
  }
  return null;
}