533 lines
17 KiB
C++
533 lines
17 KiB
C++
#ifndef BOOST_ARCHIVE_OSERIALIZER_HPP
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#define BOOST_ARCHIVE_OSERIALIZER_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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#pragma inline_depth(511)
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#pragma inline_recursion(on)
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#endif
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#if defined(__MWERKS__)
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#pragma inline_depth(511)
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#endif
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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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// oserializer.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 <boost/assert.hpp>
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#include <cstddef> // NULL
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#include <boost/config.hpp>
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#include <boost/static_assert.hpp>
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#include <boost/detail/workaround.hpp>
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#include <boost/mpl/eval_if.hpp>
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#include <boost/mpl/equal_to.hpp>
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#include <boost/mpl/greater_equal.hpp>
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#include <boost/mpl/identity.hpp>
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#include <boost/mpl/bool_fwd.hpp>
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#ifndef BOOST_SERIALIZATION_DEFAULT_TYPE_INFO
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#include <boost/serialization/extended_type_info_typeid.hpp>
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#endif
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#include <boost/serialization/throw_exception.hpp>
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#include <boost/serialization/smart_cast.hpp>
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#include <boost/serialization/assume_abstract.hpp>
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#include <boost/serialization/static_warning.hpp>
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#include <boost/type_traits/is_pointer.hpp>
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#include <boost/type_traits/is_enum.hpp>
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#include <boost/type_traits/is_const.hpp>
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#include <boost/type_traits/is_polymorphic.hpp>
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#include <boost/type_traits/remove_extent.hpp>
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#include <boost/serialization/serialization.hpp>
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#include <boost/serialization/version.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/type_info_implementation.hpp>
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#include <boost/serialization/nvp.hpp>
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#include <boost/serialization/void_cast.hpp>
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#include <boost/serialization/array.hpp>
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#include <boost/serialization/collection_size_type.hpp>
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#include <boost/serialization/singleton.hpp>
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#include <boost/archive/archive_exception.hpp>
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#include <boost/archive/detail/basic_oarchive.hpp>
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#include <boost/archive/detail/basic_oserializer.hpp>
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#include <boost/archive/detail/basic_pointer_oserializer.hpp>
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#include <boost/archive/detail/archive_serializer_map.hpp>
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#include <boost/archive/detail/check.hpp>
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namespace boost {
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namespace serialization {
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class extended_type_info;
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} // namespace serialization
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namespace archive {
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// an accessor to permit friend access to archives. Needed because
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// some compilers don't handle friend templates completely
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class save_access {
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public:
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template<class Archive>
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static void end_preamble(Archive & ar){
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ar.end_preamble();
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}
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template<class Archive, class T>
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static void save_primitive(Archive & ar, const T & t){
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ar.end_preamble();
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ar.save(t);
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}
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};
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namespace detail {
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#ifdef BOOST_MSVC
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# pragma warning(push)
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# pragma warning(disable : 4511 4512)
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#endif
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template<class Archive, class T>
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class oserializer : public basic_oserializer
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{
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private:
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// private constructor to inhibit any existence other than the
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// static one
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public:
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explicit BOOST_DLLEXPORT oserializer() :
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basic_oserializer(
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boost::serialization::singleton<
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typename
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boost::serialization::type_info_implementation< T >::type
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>::get_const_instance()
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)
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{}
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virtual BOOST_DLLEXPORT void save_object_data(
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basic_oarchive & ar,
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const void *x
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) const BOOST_USED;
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virtual bool class_info() const {
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return boost::serialization::implementation_level< T >::value
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>= boost::serialization::object_class_info;
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}
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virtual bool tracking(const unsigned int /* flags */) const {
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return boost::serialization::tracking_level< T >::value == boost::serialization::track_always
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|| (boost::serialization::tracking_level< T >::value == boost::serialization::track_selectively
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&& serialized_as_pointer());
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}
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virtual version_type version() const {
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return version_type(::boost::serialization::version< T >::value);
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}
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virtual bool is_polymorphic() const {
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return boost::is_polymorphic< T >::value;
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}
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virtual ~oserializer(){}
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};
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#ifdef BOOST_MSVC
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# pragma warning(pop)
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#endif
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template<class Archive, class T>
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BOOST_DLLEXPORT void oserializer<Archive, T>::save_object_data(
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basic_oarchive & ar,
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const void *x
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) const {
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// make sure call is routed through the highest interface that might
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// be specialized by the user.
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BOOST_STATIC_ASSERT(boost::is_const< T >::value == false);
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boost::serialization::serialize_adl(
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boost::serialization::smart_cast_reference<Archive &>(ar),
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* static_cast<T *>(const_cast<void *>(x)),
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version()
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);
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}
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#ifdef BOOST_MSVC
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# pragma warning(push)
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# pragma warning(disable : 4511 4512)
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#endif
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template<class Archive, class T>
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class pointer_oserializer :
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public basic_pointer_oserializer
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{
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private:
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const basic_oserializer &
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get_basic_serializer() const {
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return boost::serialization::singleton<
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oserializer<Archive, T>
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>::get_const_instance();
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}
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virtual BOOST_DLLEXPORT void save_object_ptr(
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basic_oarchive & ar,
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const void * x
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) const BOOST_USED;
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public:
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pointer_oserializer();
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~pointer_oserializer();
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};
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#ifdef BOOST_MSVC
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# pragma warning(pop)
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#endif
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template<class Archive, class T>
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BOOST_DLLEXPORT void pointer_oserializer<Archive, T>::save_object_ptr(
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basic_oarchive & ar,
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const void * x
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) const {
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BOOST_ASSERT(NULL != x);
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// make sure call is routed through the highest interface that might
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// be specialized by the user.
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T * t = static_cast<T *>(const_cast<void *>(x));
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const unsigned int file_version = boost::serialization::version< T >::value;
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Archive & ar_impl
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= boost::serialization::smart_cast_reference<Archive &>(ar);
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boost::serialization::save_construct_data_adl<Archive, T>(
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ar_impl,
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t,
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file_version
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);
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ar_impl << boost::serialization::make_nvp(NULL, * t);
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}
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template<class Archive, class T>
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pointer_oserializer<Archive, T>::pointer_oserializer() :
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basic_pointer_oserializer(
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boost::serialization::singleton<
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typename
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boost::serialization::type_info_implementation< T >::type
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>::get_const_instance()
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)
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{
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// make sure appropriate member function is instantiated
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boost::serialization::singleton<
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oserializer<Archive, T>
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>::get_mutable_instance().set_bpos(this);
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archive_serializer_map<Archive>::insert(this);
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}
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template<class Archive, class T>
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pointer_oserializer<Archive, T>::~pointer_oserializer(){
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archive_serializer_map<Archive>::erase(this);
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}
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template<class Archive>
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struct save_non_pointer_type {
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// note this bounces the call right back to the archive
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// with no runtime overhead
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struct save_primitive {
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template<class T>
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static void invoke(Archive & ar, const T & t){
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save_access::save_primitive(ar, t);
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}
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};
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// same as above but passes through serialization
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struct save_only {
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template<class T>
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static void invoke(Archive & ar, const T & t){
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// make sure call is routed through the highest interface that might
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// be specialized by the user.
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boost::serialization::serialize_adl(
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ar,
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const_cast<T &>(t),
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::boost::serialization::version< T >::value
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);
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}
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};
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// adds class information to the archive. This includes
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// serialization level and class version
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struct save_standard {
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template<class T>
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static void invoke(Archive &ar, const T & t){
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ar.save_object(
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& t,
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boost::serialization::singleton<
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oserializer<Archive, T>
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>::get_const_instance()
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);
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}
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};
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// adds class information to the archive. This includes
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// serialization level and class version
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struct save_conditional {
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template<class T>
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static void invoke(Archive &ar, const T &t){
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//if(0 == (ar.get_flags() & no_tracking))
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save_standard::invoke(ar, t);
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//else
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// save_only::invoke(ar, t);
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}
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};
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template<class T>
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static void invoke(Archive & ar, const T & t){
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typedef
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typename mpl::eval_if<
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// if its primitive
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mpl::equal_to<
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boost::serialization::implementation_level< T >,
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mpl::int_<boost::serialization::primitive_type>
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>,
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mpl::identity<save_primitive>,
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// else
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typename mpl::eval_if<
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// class info / version
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mpl::greater_equal<
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boost::serialization::implementation_level< T >,
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mpl::int_<boost::serialization::object_class_info>
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>,
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// do standard save
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mpl::identity<save_standard>,
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// else
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typename mpl::eval_if<
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// no tracking
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mpl::equal_to<
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boost::serialization::tracking_level< T >,
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mpl::int_<boost::serialization::track_never>
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>,
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// do a fast save
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mpl::identity<save_only>,
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// else
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// do a fast save only tracking is turned off
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mpl::identity<save_conditional>
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> > >::type typex;
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check_object_versioning< T >();
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typex::invoke(ar, t);
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}
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template<class T>
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static void invoke(Archive & ar, T & t){
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check_object_level< T >();
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check_object_tracking< T >();
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invoke(ar, const_cast<const T &>(t));
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}
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};
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template<class Archive>
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struct save_pointer_type {
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struct abstract
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{
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template<class T>
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static const basic_pointer_oserializer * register_type(Archive & /* ar */){
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// it has? to be polymorphic
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BOOST_STATIC_ASSERT(boost::is_polymorphic< T >::value);
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return NULL;
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}
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};
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struct non_abstract
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{
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template<class T>
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static const basic_pointer_oserializer * register_type(Archive & ar){
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return ar.register_type(static_cast<T *>(NULL));
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}
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};
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template<class T>
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static const basic_pointer_oserializer * register_type(Archive &ar, T & /*t*/){
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// there should never be any need to save an abstract polymorphic
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// class pointer. Inhibiting code generation for this
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// permits abstract base classes to be used - note: exception
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// virtual serialize functions used for plug-ins
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typedef
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typename mpl::eval_if<
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boost::serialization::is_abstract< T >,
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mpl::identity<abstract>,
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mpl::identity<non_abstract>
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>::type typex;
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return typex::template register_type< T >(ar);
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}
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struct non_polymorphic
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{
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template<class T>
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static void save(
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Archive &ar,
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T & t
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){
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const basic_pointer_oserializer & bpos =
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boost::serialization::singleton<
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pointer_oserializer<Archive, T>
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>::get_const_instance();
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// save the requested pointer type
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ar.save_pointer(& t, & bpos);
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}
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};
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struct polymorphic
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{
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template<class T>
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static void save(
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Archive &ar,
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T & t
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){
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typename
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boost::serialization::type_info_implementation< T >::type const
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& i = boost::serialization::singleton<
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typename
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boost::serialization::type_info_implementation< T >::type
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>::get_const_instance();
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boost::serialization::extended_type_info const * const this_type = & i;
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// retrieve the true type of the object pointed to
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// if this assertion fails its an error in this library
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BOOST_ASSERT(NULL != this_type);
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const boost::serialization::extended_type_info * true_type =
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i.get_derived_extended_type_info(t);
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// note:if this exception is thrown, be sure that derived pointer
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// is either registered or exported.
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if(NULL == true_type){
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boost::serialization::throw_exception(
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archive_exception(
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archive_exception::unregistered_class,
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"derived class not registered or exported"
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)
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);
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}
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// if its not a pointer to a more derived type
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const void *vp = static_cast<const void *>(&t);
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if(*this_type == *true_type){
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const basic_pointer_oserializer * bpos = register_type(ar, t);
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ar.save_pointer(vp, bpos);
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return;
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}
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// convert pointer to more derived type. if this is thrown
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// it means that the base/derived relationship hasn't be registered
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vp = serialization::void_downcast(
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*true_type,
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*this_type,
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static_cast<const void *>(&t)
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);
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if(NULL == vp){
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boost::serialization::throw_exception(
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archive_exception(
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archive_exception::unregistered_cast,
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true_type->get_debug_info(),
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this_type->get_debug_info()
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)
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);
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}
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// since true_type is valid, and this only gets made if the
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// pointer oserializer object has been created, this should never
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// fail
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const basic_pointer_oserializer * bpos
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= static_cast<const basic_pointer_oserializer *>(
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boost::serialization::singleton<
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archive_serializer_map<Archive>
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>::get_const_instance().find(*true_type)
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);
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BOOST_ASSERT(NULL != bpos);
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if(NULL == bpos)
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boost::serialization::throw_exception(
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archive_exception(
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archive_exception::unregistered_class,
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"derived class not registered or exported"
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)
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);
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ar.save_pointer(vp, bpos);
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}
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};
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template<class T>
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static void save(
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Archive & ar,
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const T & t
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){
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check_pointer_level< T >();
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check_pointer_tracking< T >();
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typedef typename mpl::eval_if<
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is_polymorphic< T >,
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mpl::identity<polymorphic>,
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mpl::identity<non_polymorphic>
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>::type type;
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type::save(ar, const_cast<T &>(t));
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}
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template<class TPtr>
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static void invoke(Archive &ar, const TPtr t){
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register_type(ar, * t);
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if(NULL == t){
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basic_oarchive & boa
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= boost::serialization::smart_cast_reference<basic_oarchive &>(ar);
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boa.save_null_pointer();
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save_access::end_preamble(ar);
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return;
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}
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save(ar, * t);
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}
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};
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template<class Archive>
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struct save_enum_type
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{
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template<class T>
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static void invoke(Archive &ar, const T &t){
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// convert enum to integers on save
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const int i = static_cast<int>(t);
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ar << boost::serialization::make_nvp(NULL, i);
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}
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};
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template<class Archive>
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struct save_array_type
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{
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template<class T>
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static void invoke(Archive &ar, const T &t){
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typedef typename boost::remove_extent< T >::type value_type;
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save_access::end_preamble(ar);
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// consider alignment
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std::size_t c = sizeof(t) / (
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static_cast<const char *>(static_cast<const void *>(&t[1]))
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- static_cast<const char *>(static_cast<const void *>(&t[0]))
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);
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boost::serialization::collection_size_type count(c);
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ar << BOOST_SERIALIZATION_NVP(count);
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ar << serialization::make_array(static_cast<value_type const*>(&t[0]),count);
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}
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};
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} // detail
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template<class Archive, class T>
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inline void save(Archive & ar, /*const*/ T &t){
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typedef
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typename mpl::eval_if<is_pointer< T >,
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mpl::identity<detail::save_pointer_type<Archive> >,
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//else
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typename mpl::eval_if<is_enum< T >,
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mpl::identity<detail::save_enum_type<Archive> >,
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//else
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typename mpl::eval_if<is_array< T >,
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mpl::identity<detail::save_array_type<Archive> >,
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//else
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mpl::identity<detail::save_non_pointer_type<Archive> >
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>
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>
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>::type typex;
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typex::invoke(ar, t);
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}
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} // namespace archive
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} // namespace boost
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#endif // BOOST_ARCHIVE_OSERIALIZER_HPP
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