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Filename : archive_input_unordered_map.hpp
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#ifndef  BOOST_SERIALIZATION_ARCHIVE_INPUT_UNORDERED_MAP_HPP
#define BOOST_SERIALIZATION_ARCHIVE_INPUT_UNORDERED_MAP_HPP

// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif

/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// serialization/unordered_map.hpp:
// serialization for stl unordered_map templates

// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
// (C) Copyright 2014 Jim Bell
// Use, modification and distribution is subject to 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 for updates, documentation, and revision history.

#include <boost/config.hpp>
#include <boost/serialization/nvp.hpp>
#include <boost/serialization/detail/stack_constructor.hpp>
#include <boost/serialization/utility.hpp>
#include <boost/move/utility_core.hpp>

namespace boost {
namespace serialization {
namespace stl {

// map input
template<class Archive, class Container>
struct archive_input_unordered_map
{
    inline void operator()(
        Archive &ar,
        Container &s,
        const unsigned int v
    ){
        typedef typename Container::value_type type;
        detail::stack_construct<Archive, type> t(ar, v);
        ar >> boost::serialization::make_nvp("item", t.reference());
        std::pair<typename Container::const_iterator, bool> result =
            s.insert(boost::move(t.reference()));
        // note: the following presumes that the map::value_type was NOT tracked
        // in the archive.  This is the usual case, but here there is no way
        // to determine that.
        if(result.second){
            ar.reset_object_address(
                & (result.first->second),
                & t.reference().second
            );
        }
    }
};

// multimap input
template<class Archive, class Container>
struct archive_input_unordered_multimap
{
    inline void operator()(
        Archive &ar,
        Container &s,
        const unsigned int v
    ){
        typedef typename Container::value_type type;
        detail::stack_construct<Archive, type> t(ar, v);
        ar >> boost::serialization::make_nvp("item", t.reference());
        typename Container::const_iterator result =
            s.insert(t.reference());
        // note: the following presumes that the map::value_type was NOT tracked
        // in the archive.  This is the usual case, but here there is no way
        // to determine that.
        ar.reset_object_address(
            & result->second,
            & t.reference()
        );
    }
};

} // stl
} // namespace serialization
} // namespace boost

#endif // BOOST_SERIALIZATION_ARCHIVE_INPUT_UNORDERED_MAP_HPP