Method load

plugins/experimental/txn_box/plugin/src/Modifier.cc:44–72

}

Rv<Modifier::Handle>
Modifier::load(Config &cfg, YAML::Node const &node, ActiveType ex_type)
{
  if (!node.IsMap()) {
    return Errata(S_ERROR, R"(Modifier at {} is not an object as required.)", node.Mark());
  }

  for (auto const &[key_node, value_node] : node) {
    TextView key{key_node.Scalar()};
    auto &&[arg, arg_errata]{parse_arg(key)};
    if (!arg_errata.is_ok()) {
      return std::move(arg_errata);
    }
    // See if @a key is in the factory.
    if (auto spot{_factory.find(key)}; spot != _factory.end()) {
      auto &&[handle, errata]{spot->second(cfg, node, key, arg, value_node)};

      if (!errata.is_ok()) {
        return std::move(errata);
      }
      if (!handle->is_valid_for(ex_type)) {
        return Errata(S_ERROR, R"(Modifier "{}" at {} cannot accept a feature of type "{}".)", key, node.Mark(), ex_type);
      }

      return std::move(handle);
    }
  }
  return Errata(S_ERROR, R"(No valid modifier key in object at {}.)", node.Mark());
}

swoc::Rv<Feature>
Modifier::operator()(Context &, feature_type_for<NIL>)