src/thirdparty/boost_1_47_0/boost/multi_index/detail/archive_constructed.hpp

   1 /* Copyright 2003-2008 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)&&(_MSC_VER>=1200)
  13 #pragma once
  14 #endif
  15
  16 #include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
  17 #include <boost/detail/no_exceptions_support.hpp>
  18 #include <boost/noncopyable.hpp>
  19 #include <boost/serialization/serialization.hpp>
  20 #include <boost/type_traits/aligned_storage.hpp>
  21 #include <boost/type_traits/alignment_of.hpp>
  22
  23 namespace boost{
  24
  25 namespace multi_index{
  26
  27 namespace detail{
  28
  29 /* constructs a stack-based object from a serialization archive */
  30
  31 template<typename T>
  32 struct archive_constructed:private noncopyable
  33 {
  34   template<class Archive>
  35   archive_constructed(Archive& ar,const unsigned int version)
  36   {
  37     serialization::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     serialization::load_construct_data_adl(ar,&get(),version);
  52     BOOST_TRY{
  53       ar>>serialization::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   T& get(){return *static_cast<T*>(static_cast<void*>(&space));}
  68
  69 private:
  70   typename aligned_storage<sizeof(T),alignment_of<T>::value>::type space;
  71 };
  72
  73 } /* namespace multi_index::detail */
  74
  75 } /* namespace multi_index */
  76
  77 } /* namespace boost */
  78
  79 #endif