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/* Copyright 2003-2008 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_INDEX_NODE_BASE_HPP
#define BOOST_MULTI_INDEX_DETAIL_INDEX_NODE_BASE_HPP
#if defined(_MSC_VER)&&(_MSC_VER>=1200)
#pragma once
#endif
#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
#include <boost/type_traits/aligned_storage.hpp>
#include <boost/type_traits/alignment_of.hpp>
#if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
#include <boost/archive/archive_exception.hpp>
#include <boost/serialization/access.hpp>
#include <boost/throw_exception.hpp>
#endif
namespace boost{
namespace multi_index{
namespace detail{
/* index_node_base tops the node hierarchy of multi_index_container. It holds
* the value of the element contained.
*/
template<typename Value>
struct pod_value_holder
{
typename aligned_storage<
sizeof(Value),
alignment_of<Value>::value
>::type space;
};
template<typename Value,typename Allocator>
struct index_node_base:private pod_value_holder<Value>
{
typedef index_node_base base_type; /* used for serialization purposes */
typedef Value value_type;
typedef Allocator allocator_type;
value_type& value()
{
return *static_cast<value_type*>(
static_cast<void*>(&this->space));
}
const value_type& value()const
{
return *static_cast<const value_type*>(
static_cast<const void*>(&this->space));
}
static index_node_base* from_value(const value_type* p)
{
return static_cast<index_node_base *>(
reinterpret_cast<pod_value_holder<Value>*>( /* std 9.2.17 */
const_cast<value_type*>(p)));
}
private:
#if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
friend class boost::serialization::access;
/* nodes do not emit any kind of serialization info. They are
* fed to Boost.Serialization so that pointers to nodes are
* tracked correctly.
*/
template<class Archive>
void serialize(Archive&,const unsigned int)
{
}
#endif
};
template<typename Node,typename Value>
Node* node_from_value(
const Value* p
BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE(Node))
{
typedef typename Node::allocator_type allocator_type;
return static_cast<Node*>(
index_node_base<Value,allocator_type>::from_value(p));
}
} /* namespace multi_index::detail */
} /* namespace multi_index */
#if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
/* Index nodes never get constructed directly by Boost.Serialization,
* as archives are always fed pointers to previously existent
* nodes. So, if this is called it means we are dealing with a
* somehow invalid archive.
*/
#if defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
namespace serialization{
#else
namespace multi_index{
namespace detail{
#endif
template<class Archive,typename Value,typename Allocator>
inline void load_construct_data(
Archive&,boost::multi_index::detail::index_node_base<Value,Allocator>*,
const unsigned int)
{
throw_exception(
archive::archive_exception(archive::archive_exception::other_exception));
}
#if defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
} /* namespace serialization */
#else
} /* namespace multi_index::detail */
} /* namespace multi_index */
#endif
#endif
} /* namespace boost */
#endif
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Swift