Method fromString

src/utilities/filetypes/WorkflowStepResult.cpp:721–755

  : m_impl(std::shared_ptr<detail::WorkflowStepValue_Impl>(new detail::WorkflowStepValue_Impl(name, Variant(value)))) {}

boost::optional<WorkflowStepValue> WorkflowStepValue::fromString(const std::string& s) {
  // We let it fail with a warning message
  const Json::CharReaderBuilder rbuilder;
  std::istringstream ss(s);
  std::string formattedErrors;
  Json::Value value;
  const bool parsingSuccessful = Json::parseFromStream(rbuilder, ss, &value, &formattedErrors);
  if (!parsingSuccessful) {
    LOG(Warn, "Couldn't parse WorkflowStepValue from string s='" << s << "'. Error: '" << formattedErrors << "'.");
    return boost::none;
  }

  boost::optional<WorkflowStepValue> result;

  try {
    const std::string name = value["name"].asString();
    const Json::Value v = value["value"];
    if (v.isString()) {
      result = WorkflowStepValue(name, v.asString());
    } else if (v.isIntegral()) {
      result = WorkflowStepValue(name, v.asInt());
    } else if (v.isDouble()) {
      result = WorkflowStepValue(name, v.asDouble());
    } else if (v.isBool()) {
      result = WorkflowStepValue(name, v.asBool());
    } else {
      //error
    }

  } catch (const std::exception&) {
    return boost::none;
  }

  return result;
}

std::string WorkflowStepValue::string() const {
  return getImpl<detail::WorkflowStepValue_Impl>()->string();