fromJson static method

SimpleEffectSchema? fromJson(dynamic value)

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

Implementation

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

    return SimpleEffectSchema(
      code: mapValueOfType<String>(json, r'code')!,
      value: mapValueOfType<int>(json, r'value')!,
      description: mapValueOfType<String>(json, r'description')!,
    );
  }
  return null;
}