.. _program_listing_file__tmp_ws_src_rmf_task_rmf_task_include_rmf_task_CompositeData.hpp:

Program Listing for File CompositeData.hpp
==========================================

|exhale_lsh| :ref:`Return to documentation for file <file__tmp_ws_src_rmf_task_rmf_task_include_rmf_task_CompositeData.hpp>` (``/tmp/ws/src/rmf_task/rmf_task/include/rmf_task/CompositeData.hpp``)

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

.. code-block:: cpp

   /*
    * Copyright (C) 2021 Open Source Robotics Foundation
    *
    * 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 RMF_TASK__COMPOSITEDATA_HPP
   #define RMF_TASK__COMPOSITEDATA_HPP
   
   #include <rmf_utils/impl_ptr.hpp>
   
   #include <any>
   #include <typeindex>
   
   namespace rmf_task {
   
   //==============================================================================
   //
   // TODO(MXG): Should this class move to rmf_utils? It is not very specific to
   // task planning or management.
   class CompositeData
   {
   public:
   
     CompositeData();
   
     template<typename T>
     struct InsertResult
     {
       bool inserted;
   
       T* value;
     };
   
     template<typename T>
     InsertResult<T> insert(T&& value);
   
     template<typename T>
     InsertResult<T> insert_or_assign(T&& value);
   
     template<typename T>
     CompositeData& with(T&& value);
   
     template<typename T>
     T* get();
   
     template<typename T>
     const T* get() const;
   
     template<typename T>
     bool erase();
   
     void clear();
   
     class Implementation;
   private:
     std::any* _get(std::type_index type);
     const std::any* _get(std::type_index type) const;
     InsertResult<std::any> _insert(std::any value, bool or_assign);
     bool _erase(std::type_index type);
     rmf_utils::impl_ptr<Implementation> _pimpl;
   };
   
   } // namespace rmf_task
   
   //==============================================================================
   #define RMF_TASK_DEFINE_COMPONENT(Type, Name) \
     struct Name { Type value; Name(Type input) : value(input) {} }
   
   #include <rmf_task/detail/impl_CompositeData.hpp>
   
   #endif // RMF_TASK__COMPOSITEDATA_HPP