UnaryOp.fromJson constructor

UnaryOp.fromJson(Object? json_)

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

Implementation

factory UnaryOp.fromJson(Object? json_) {
  final json = json_ is Map
      ? _spec.fields.map((f) => json_[f.label]).toList(growable: false)
      : json_;
  return switch (json) {
    [final op, final expr] || (final op, final expr) => UnaryOp(
        op: UnaryOperator.fromJson(op),
        expr: ExprRef.fromJson(expr),
      ),
    _ => throw Exception('Invalid JSON $json_')
  };
}