Fetch.fromJson constructor

Fetch.fromJson(Object? json_)

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

Implementation

factory Fetch.fromJson(Object? json_) {
  final json = json_ is Map
      ? _spec.fields.map((f) => json_[f.label]).toList(growable: false)
      : json_;
  return switch (json) {
    [final withTies, final percent, final quantity] ||
    (final withTies, final percent, final quantity) =>
      Fetch(
        withTies: withTies! as bool,
        percent: percent! as bool,
        quantity:
            Option.fromJson(quantity, (some) => Expr.fromJson(some)).value,
      ),
    _ => throw Exception('Invalid JSON $json_')
  };
}