.. _program_listing_file_include_rclcpp_dynamic_typesupport_dynamic_message.hpp:

Program Listing for File dynamic_message.hpp
============================================

|exhale_lsh| :ref:`Return to documentation for file <file_include_rclcpp_dynamic_typesupport_dynamic_message.hpp>` (``include/rclcpp/dynamic_typesupport/dynamic_message.hpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   // Copyright 2023 Open Source Robotics Foundation, Inc.
   //
   // 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 RCLCPP__DYNAMIC_TYPESUPPORT__DYNAMIC_MESSAGE_HPP_
   #define RCLCPP__DYNAMIC_TYPESUPPORT__DYNAMIC_MESSAGE_HPP_
   
   #include <rcl/allocator.h>
   #include <rcl/types.h>
   #include <rosidl_dynamic_typesupport/types.h>
   
   #include <memory>
   #include <string>
   
   #include "rclcpp/dynamic_typesupport/dynamic_message_type.hpp"
   #include "rclcpp/dynamic_typesupport/dynamic_serialization_support.hpp"
   #include "rclcpp/macros.hpp"
   #include "rclcpp/visibility_control.hpp"
   
   namespace rclcpp
   {
   namespace dynamic_typesupport
   {
   
   class DynamicMessage : public std::enable_shared_from_this<DynamicMessage>
   {
   public:
     RCLCPP_SMART_PTR_ALIASES_ONLY(DynamicMessage)
   
     RCLCPP_PUBLIC
     virtual ~DynamicMessage();
   
   protected:
     // NOTE(methylDragon):
     // This is just here to extend the lifetime of the serialization support
     // It isn't actually used by the builder since the builder should compose its own support
     //
     // ... Though ideally it should be the exact same support as the one stored in the
     // DynamicSerializationSupport
     DynamicSerializationSupport::SharedPtr serialization_support_;
   
     rosidl_dynamic_typesupport_dynamic_data_t rosidl_dynamic_data_;
     bool is_loaned_;
   
     // Used for returning the loaned value, and lifetime management
     DynamicMessage::SharedPtr parent_data_;
   
   private:
     RCLCPP_DISABLE_COPY(DynamicMessage)
   
     RCLCPP_PUBLIC
     DynamicMessage();
   };
   
   }  // namespace dynamic_typesupport
   }  // namespace rclcpp
   
   #endif  // RCLCPP__DYNAMIC_TYPESUPPORT__DYNAMIC_MESSAGE_HPP_