MessageConstant.h

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/******************************************************************************
 * 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_CONSTANT_H
#define VARIANT_TOPIC_TOOLS_MESSAGE_CONSTANT_H

#include <variant_topic_tools/MessageMember.h>
#include <variant_topic_tools/Variant.h>

namespace variant_topic_tools {
  class MessageConstant :
    public MessageMember {
  friend class MessageDataType;
  friend class MessageMember;
  public:
    MessageConstant();
    
    MessageConstant(const MessageConstant& src);
    
    MessageConstant(const MessageMember& src);
    
    ~MessageConstant();
  
    const Variant& getValue() const;
    
  protected:
    class Impl :
      public MessageMember::Impl {
    public:
      Impl(const std::string& name, const Variant& value);
      
      virtual ~Impl();
      
      const DataType& getType() const;
    
      void write(std::ostream& stream) const;
      
      Variant value;
    };
    
    MessageConstant(const std::string& name, const Variant& value);
    
    MessageConstant(const std::string& name, const DataType& type,
      const std::string& value);
    
    template <typename T> static MessageConstant create(const std::string&
      name, const T& value);
  };
};

#include <variant_topic_tools/MessageConstant.tpp>

#endif