protobuf_traits.h

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/******************************************************************************
 * Copyright 2018 The Apollo Authors. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *****************************************************************************/

#ifndef CYBER_MESSAGE_PROTOBUF_TRAITS_H_
#define CYBER_MESSAGE_PROTOBUF_TRAITS_H_

#include <cassert>
#include <memory>
#include <string>

#include "cyber/message/protobuf_factory.h"

namespace apollo {
namespace cyber {
namespace message {

template <typename MessageT,
          typename std::enable_if<
              std::is_base_of<google::protobuf::Message, MessageT>::value,
              int>::type = 0>
inline std::string MessageType() {
  return MessageT::descriptor()->full_name();
}

template <typename MessageT,
          typename std::enable_if<
              std::is_base_of<google::protobuf::Message, MessageT>::value,
              int>::type = 0>
std::string MessageType(const MessageT& message) {
  return message.GetDescriptor()->full_name();
}

template <typename MessageT,
          typename std::enable_if<
              std::is_base_of<google::protobuf::Message, MessageT>::value,
              int>::type = 0>
inline void GetDescriptorString(const MessageT& message,
                                std::string* desc_str) {
  ProtobufFactory::Instance()->GetDescriptorString(message, desc_str);
}

template <typename MessageT,
          typename std::enable_if<
              std::is_base_of<google::protobuf::Message, MessageT>::value,
              int>::type = 0>
inline void GetDescriptorString(const std::string& type,
                                std::string* desc_str) {
  ProtobufFactory::Instance()->GetDescriptorString(type, desc_str);
}

template <typename MessageT,
          typename std::enable_if<
              std::is_base_of<google::protobuf::Message, MessageT>::value,
              int>::type = 0>
bool RegisterMessage(const MessageT& message) {
  return ProtobufFactory::Instance()->RegisterMessage(message);
}

}  // namespace message
}  // namespace cyber
}  // namespace apollo

#endif  // CYBER_MESSAGE_PROTOBUF_TRAITS_H_