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124 lines
3.6 KiB
C++
124 lines
3.6 KiB
C++
#ifndef BOOST_SERIALIZATION_NVP_HPP
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#define BOOST_SERIALIZATION_NVP_HPP
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER)
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# pragma once
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#endif
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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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// nvp.hpp: interface for serialization system.
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// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
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// Use, modification and distribution is subject to the Boost Software
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// See http://www.boost.org for updates, documentation, and revision history.
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#include <utility>
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#include <boost/config.hpp>
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#include <boost/detail/workaround.hpp>
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#include <boost/serialization/level.hpp>
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#include <boost/serialization/tracking.hpp>
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#include <boost/serialization/split_member.hpp>
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#include <boost/serialization/base_object.hpp>
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#include <boost/serialization/traits.hpp>
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#include <boost/serialization/wrapper.hpp>
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namespace boost {
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namespace serialization {
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template<class T>
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struct nvp :
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public std::pair<const char *, T *>,
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public wrapper_traits<const nvp< T > >
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{
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//private:
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nvp(const nvp & rhs) :
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std::pair<const char *, T *>(rhs.first, rhs.second)
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{}
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public:
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explicit nvp(const char * name_, T & t) :
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// note: added _ to suppress useless gcc warning
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std::pair<const char *, T *>(name_, & t)
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{}
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const char * name() const {
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return this->first;
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}
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T & value() const {
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return *(this->second);
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}
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const T & const_value() const {
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return *(this->second);
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}
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template<class Archive>
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void save(
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Archive & ar,
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const unsigned int /* file_version */
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) const {
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ar.operator<<(const_value());
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}
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template<class Archive>
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void load(
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Archive & ar,
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const unsigned int /* file_version */
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){
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ar.operator>>(value());
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}
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BOOST_SERIALIZATION_SPLIT_MEMBER()
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};
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template<class T>
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inline
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const nvp< T > make_nvp(const char * name, T & t){
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return nvp< T >(name, t);
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}
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// to maintain efficiency and portability, we want to assign
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// specific serialization traits to all instances of this wrappers.
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// we can't strait forward method below as it depends upon
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// Partial Template Specialization and doing so would mean that wrappers
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// wouldn't be treated the same on different platforms. This would
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// break archive portability. Leave this here as reminder not to use it !!!
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template <class T>
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struct implementation_level<nvp< T > >
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{
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typedef mpl::integral_c_tag tag;
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typedef mpl::int_<object_serializable> type;
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BOOST_STATIC_CONSTANT(int, value = implementation_level::type::value);
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};
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// nvp objects are generally created on the stack and are never tracked
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template<class T>
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struct tracking_level<nvp< T > >
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{
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typedef mpl::integral_c_tag tag;
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typedef mpl::int_<track_never> type;
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BOOST_STATIC_CONSTANT(int, value = tracking_level::type::value);
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};
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} // seralization
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} // boost
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#include <boost/preprocessor/stringize.hpp>
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#define BOOST_SERIALIZATION_NVP(name) \
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boost::serialization::make_nvp(BOOST_PP_STRINGIZE(name), name)
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/**/
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#define BOOST_SERIALIZATION_BASE_OBJECT_NVP(name) \
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boost::serialization::make_nvp( \
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BOOST_PP_STRINGIZE(name), \
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boost::serialization::base_object<name >(*this) \
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)
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/**/
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#endif // BOOST_SERIALIZATION_NVP_HPP
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