.. _program_listing_file_include_rclcpp_detail_resolve_intra_process_buffer_type.hpp:

Program Listing for File resolve_intra_process_buffer_type.hpp
==============================================================

|exhale_lsh| :ref:`Return to documentation for file <file_include_rclcpp_detail_resolve_intra_process_buffer_type.hpp>` (``include/rclcpp/detail/resolve_intra_process_buffer_type.hpp``)

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

.. code-block:: cpp

   // Copyright 2019 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__DETAIL__RESOLVE_INTRA_PROCESS_BUFFER_TYPE_HPP_
   #define RCLCPP__DETAIL__RESOLVE_INTRA_PROCESS_BUFFER_TYPE_HPP_
   
   #include <stdexcept>
   
   #include "rclcpp/any_subscription_callback.hpp"
   #include "rclcpp/intra_process_buffer_type.hpp"
   
   namespace rclcpp
   {
   
   namespace detail
   {
   
   template<typename CallbackMessageT, typename AllocatorT>
   rclcpp::IntraProcessBufferType
   resolve_intra_process_buffer_type(
     const rclcpp::IntraProcessBufferType buffer_type,
     const rclcpp::AnySubscriptionCallback<CallbackMessageT, AllocatorT> & any_subscription_callback)
   {
     rclcpp::IntraProcessBufferType resolved_buffer_type = buffer_type;
   
     // If the user has not specified a type for the intra-process buffer, use the callback's type.
     if (resolved_buffer_type == IntraProcessBufferType::CallbackDefault) {
       if (any_subscription_callback.use_take_shared_method()) {
         resolved_buffer_type = IntraProcessBufferType::SharedPtr;
       } else {
         resolved_buffer_type = IntraProcessBufferType::UniquePtr;
       }
     }
   
     return resolved_buffer_type;
   }
   
   }  // namespace detail
   
   }  // namespace rclcpp
   
   #endif  // RCLCPP__DETAIL__RESOLVE_INTRA_PROCESS_BUFFER_TYPE_HPP_