YMapDelta.fromJson constructor

YMapDelta.fromJson(Object? json_)

Returns a new instance from a JSON value. May throw if the value does not have the expected structure.

Implementation

factory YMapDelta.fromJson(Object? json_) {
  final json = json_ is Map
      ? _spec.fields.map((f) => json_[f.label]).toList(growable: false)
      : json_;
  return switch (json) {
    [final action, final oldValue, final newValue] ||
    (final action, final oldValue, final newValue) =>
      YMapDelta(
        action: YMapDeltaAction.fromJson(action),
        oldValue:
            Option.fromJson(oldValue, (some) => YValue.fromJson(some)).value,
        newValue:
            Option.fromJson(newValue, (some) => YValue.fromJson(some)).value,
      ),
    _ => throw Exception('Invalid JSON $json_')
  };
}