MessageMemberPointer.h

Go to the documentation of this file.

/******************************************************************************
 * Copyright (C) 2014 by Ralf Kaestner                                        *
 * ralf.kaestner@gmail.com                                                    *
 *                                                                            *
 * This program is free software; you can redistribute it and/or modify       *
 * it under the terms of the Lesser GNU General Public License as published by*
 * the Free Software Foundation; either version 3 of the License, or          *
 * (at your option) any later version.                                        *
 *                                                                            *
 * This program is distributed in the hope that it will be useful,            *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of             *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the               *
 * Lesser GNU General Public License for more details.                        *
 *                                                                            *
 * You should have received a copy of the Lesser GNU General Public License   *
 * along with this program. If not, see <http://www.gnu.org/licenses/>.       *
 ******************************************************************************/

#ifndef VARIANT_TOPIC_TOOLS_MESSAGE_MEMBER_POINTER_H
#define VARIANT_TOPIC_TOOLS_MESSAGE_MEMBER_POINTER_H

#include <variant_topic_tools/DataTypeTraits.h>
#include <variant_topic_tools/MessageTypeTraits.h>
#include <variant_topic_tools/Pointer.h>

namespace variant_topic_tools {
  template <typename T, typename M> class MessageMemberPointer :
    public Pointer<typename type_traits::DataType<M>::ValueType> {
  public:
    BOOST_STATIC_ASSERT(type_traits::IsMessage<T>::value);
    
    typedef typename type_traits::MessageType<T>::ValueType ValueType;
    
    typedef typename type_traits::DataType<M>::ValueType MemberValueType;
      
    MessageMemberPointer(ValueType* message = 0, size_t offset = 0);
    
    MessageMemberPointer(const Pointer<ValueType>& message, size_t offset);
    
    MessageMemberPointer(const MessageMemberPointer<T, M>& src);
    
    MessageMemberPointer(const Pointer<MemberValueType>& src);
    
    ~MessageMemberPointer();
    
    void setMessage(const Pointer<ValueType>& message);
    
    const Pointer<ValueType>& getMessage() const;
    
    void setOffset(size_t offset);
    
    size_t getOffset() const;

  protected:
    class Impl :
      public Pointer<MemberValueType>::ImplA {
    public:
      Impl(const Pointer<ValueType>& message = Pointer<ValueType>(), size_t
        offset = 0);
      
      virtual ~Impl();
      
      MemberValueType* get() const;
      
      Pointer<ValueType> message;
      
      size_t offset;
    };
  };
};

#include <variant_topic_tools/MessageMemberPointer.tpp>

#endif