info-factory.hh

説明を見る。

#ifndef INFO_FACTORY_HH_
# define INFO_FACTORY_HH_

# include <map>

# include "incoming-packet.hh"

namespace infos
{
  struct GenInfoMaker
  {
    GenInfoMaker()
    {
    }
    
    virtual packets::IncomingPacket *make() = 0;
  };

  template <typename T>
  struct InfoMaker : public GenInfoMaker
  {
  public:
    InfoMaker() : GenInfoMaker()
    {
      InfoFactory::get_instance().register_info_maker(T::op, *this);
    }

    packets::IncomingPacket *make()
    {
      return new T();
    }
  };

  class InfoFactory
  {
  public:
    typedef std::map<int, GenInfoMaker *> InfoMakerMap;

  public:
    InfoFactory();

    void register_info_maker(int op, GenInfoMaker &gim);
    packets::IncomingPacket *make(int op, int data_size);
    static InfoFactory &get_instance();

  protected:
    InfoMakerMap _info_maker_map;
  };
};

#endif

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