/home/mhx/git/github/libmoost/include/moost/pdl/dynamic_library.h

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/* vim:set ts=3 sw=3 sts=3 et: */
#ifndef MOOST_PDL_DYNAMIC_LIBRARY_HPP__
#define MOOST_PDL_DYNAMIC_LIBRARY_HPP__

#include <string>

#include <boost/shared_ptr.hpp>

#include "exception.h"
#include "dynamic_class.h"

namespace moost { namespace pdl {

class dynamic_library_if;

class dynamic_library
{
public:
   dynamic_library();

   dynamic_library(const std::string& library_name, bool resolve_symbols = true);

   void open(const std::string& library_name, bool resolve_symbols = true);

   void close();

   bool is_open() const
   {
      return m_impl;
   }

   template <typename T>
   boost::shared_ptr<T> create(const std::string& class_name)
   {
      dynamic_class *instance = create_instance(class_name);

      T *dci = dynamic_cast<T *>(instance);

      if (!dci)
      {
         delete instance;
         throw exception("invalid type for class " + class_name);
      }

      return boost::shared_ptr<T>(dci, dynamic_class_deleter);
   }

   template <typename T>
   boost::shared_ptr<T> associate(T *instance)
   {
      instance->m_library = m_impl;
      return boost::shared_ptr<T>(instance, dynamic_class_deleter);
   }

private:
   static void dynamic_class_deleter(dynamic_class *p);

   dynamic_class *create_instance(const std::string& class_name);

   boost::shared_ptr<dynamic_library_if> m_impl;
};

}}

#endif