boost/multi_index/detail/archive_constructed.hpp
/* Copyright 2003-2020 Joaquin M Lopez Munoz.
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*
* See http://www.boost.org/libs/multi_index for library home page.
*/
#ifndef BOOST_MULTI_INDEX_DETAIL_ARCHIVE_CONSTRUCTED_HPP
#define BOOST_MULTI_INDEX_DETAIL_ARCHIVE_CONSTRUCTED_HPP
#if defined(_MSC_VER)
#pragma once
#endif
#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
#include <boost/core/no_exceptions_support.hpp>
#include <boost/noncopyable.hpp>
#include <boost/serialization/serialization.hpp>
#include <boost/type_traits/aligned_storage.hpp>
#include <boost/type_traits/alignment_of.hpp>
namespace boost{
namespace multi_index{
namespace detail{
/* constructs a stack-based object from a serialization archive */
template<typename T>
struct archive_constructed:private noncopyable
{
template<class Archive>
archive_constructed(Archive& ar,const unsigned int version)
{
serialization::load_construct_data_adl(ar,&get(),version);
BOOST_TRY{
ar>>get();
}
BOOST_CATCH(...){
(&get())->~T();
BOOST_RETHROW;
}
BOOST_CATCH_END
}
template<class Archive>
archive_constructed(const char* name,Archive& ar,const unsigned int version)
{
serialization::load_construct_data_adl(ar,&get(),version);
BOOST_TRY{
ar>>serialization::make_nvp(name,get());
}
BOOST_CATCH(...){
(&get())->~T();
BOOST_RETHROW;
}
BOOST_CATCH_END
}
~archive_constructed()
{
(&get())->~T();
}
#include <boost/multi_index/detail/ignore_wstrict_aliasing.hpp>
T& get(){return *reinterpret_cast<T*>(&space);}
#include <boost/multi_index/detail/restore_wstrict_aliasing.hpp>
private:
typename aligned_storage<sizeof(T),alignment_of<T>::value>::type space;
};
} /* namespace multi_index::detail */
} /* namespace multi_index */
} /* namespace boost */
#endif