1/* Copyright 2003-2023 Joaquin M Lopez Munoz.
2 * Distributed under the Boost Software License, Version 1.0.
3 * (See accompanying file LICENSE_1_0.txt or copy at
4 * http://www.boost.org/LICENSE_1_0.txt)
5 *
6 * See http://www.boost.org/libs/multi_index for library home page.
7 */
8
9#ifndef BOOST_MULTI_INDEX_DETAIL_ARCHIVE_CONSTRUCTED_HPP
10#define BOOST_MULTI_INDEX_DETAIL_ARCHIVE_CONSTRUCTED_HPP
11
12#if defined(_MSC_VER)
13#pragma once
14#endif
15
16#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
17#include <boost/core/no_exceptions_support.hpp>
18#include <boost/core/noncopyable.hpp>
19#include <boost/core/serialization.hpp>
20#include <boost/type_traits/aligned_storage.hpp>
21#include <boost/type_traits/alignment_of.hpp>
22
23namespace boost{
24
25namespace multi_index{
26
27namespace detail{
28
29/* constructs a stack-based object from a serialization archive */
30
31template<typename T>
32struct archive_constructed:private noncopyable
33{
34 template<class Archive>
35 archive_constructed(Archive& ar,const unsigned int version)
36 {
37 core::load_construct_data_adl(ar,&get(),version);
38 BOOST_TRY{
39 ar>>get();
40 }
41 BOOST_CATCH(...){
42 (&get())->~T();
43 BOOST_RETHROW;
44 }
45 BOOST_CATCH_END
46 }
47
48 template<class Archive>
49 archive_constructed(const char* name,Archive& ar,const unsigned int version)
50 {
51 core::load_construct_data_adl(ar,&get(),version);
52 BOOST_TRY{
53 ar>>core::make_nvp(name,get());
54 }
55 BOOST_CATCH(...){
56 (&get())->~T();
57 BOOST_RETHROW;
58 }
59 BOOST_CATCH_END
60 }
61
62 ~archive_constructed()
63 {
64 (&get())->~T();
65 }
66
67#include <boost/multi_index/detail/ignore_wstrict_aliasing.hpp>
68
69 T& get(){return *reinterpret_cast<T*>(&space);}
70
71#include <boost/multi_index/detail/restore_wstrict_aliasing.hpp>
72
73private:
74 typename aligned_storage<sizeof(T),alignment_of<T>::value>::type space;
75};
76
77} /* namespace multi_index::detail */
78
79} /* namespace multi_index */
80
81} /* namespace boost */
82
83#endif
84