oserializer.hpp

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#ifndef BOOST_ARCHIVE_OSERIALIZER_HPP
#define BOOST_ARCHIVE_OSERIALIZER_HPP

// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#pragma inline_depth(511)
#pragma inline_recursion(on)
#endif

#if defined(__MWERKS__)
#pragma inline_depth(511)
#endif

/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// oserializer.hpp: interface for serialization system.

// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 
// 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 <cassert>
#include <cstddef> // NULL

#include <boost/config.hpp>
#include <boost/detail/workaround.hpp>
#include <boost/serialization/throw_exception.hpp>
#include <boost/serialization/smart_cast.hpp>
#include <boost/static_assert.hpp>
#include <boost/serialization/static_warning.hpp>

#include <boost/type_traits/is_pointer.hpp>
#include <boost/type_traits/is_enum.hpp>
//#include <boost/type_traits/is_volatile.hpp>
#include <boost/type_traits/is_const.hpp>
//#include <boost/type_traits/is_same.hpp>
#include <boost/type_traits/is_polymorphic.hpp>
#include <boost/type_traits/remove_extent.hpp>
#include <boost/serialization/assume_abstract.hpp>

#include <boost/mpl/eval_if.hpp>
#include <boost/mpl/and.hpp>
//#include <boost/mpl/less.hpp>
#include <boost/mpl/greater_equal.hpp>
#include <boost/mpl/equal_to.hpp>
#include <boost/mpl/int.hpp>
#include <boost/mpl/identity.hpp>
//#include <boost/mpl/list.hpp>
//#include <boost/mpl/empty.hpp>
#include <boost/mpl/not.hpp>

 #ifndef BOOST_SERIALIZATION_DEFAULT_TYPE_INFO   
     #include <boost/serialization/extended_type_info_typeid.hpp>   
 #endif 
// the following is need only for dynamic cast of polymorphic pointers
#include <boost/archive/detail/basic_oarchive.hpp>
#include <boost/archive/detail/basic_oserializer.hpp>
#include <boost/archive/detail/archive_pointer_oserializer.hpp>

#include <boost/serialization/serialization.hpp>
#include <boost/serialization/version.hpp>
#include <boost/serialization/level.hpp>
#include <boost/serialization/tracking.hpp>
#include <boost/serialization/type_info_implementation.hpp>
#include <boost/serialization/nvp.hpp>
#include <boost/serialization/void_cast.hpp>
#include <boost/serialization/array.hpp>
#include <boost/serialization/collection_size_type.hpp>
#include <boost/serialization/singleton.hpp>

#include <boost/archive/archive_exception.hpp>

namespace boost {

namespace serialization {
    class extended_type_info;
} // namespace serialization

namespace archive {

// an accessor to permit friend access to archives.  Needed because
// some compilers don't handle friend templates completely
class save_access {
public:
    template<class Archive>
    static void end_preamble(Archive & ar){
        ar.end_preamble();
    }
    template<class Archive, class T>
    static void save_primitive(Archive & ar, const  T & t){
        ar.end_preamble();
        ar.save(t);
    }
};

namespace detail {

template<class Archive, class T>
class oserializer : public basic_oserializer
{
private:
    // private constructor to inhibit any existence other than the 
    // static one
public:
    explicit BOOST_DLLEXPORT oserializer() :
        basic_oserializer(
            boost::serialization::type_info_implementation<T>::type
                ::get_const_instance()
        )
    {}
    virtual BOOST_DLLEXPORT void save_object_data(
        basic_oarchive & ar,    
        const void *x
    ) const BOOST_USED;
    virtual bool class_info() const {
        return boost::serialization::implementation_level<T>::value 
            >= boost::serialization::object_class_info;
    }
    virtual bool tracking(const unsigned int /* flags */) const {
        return boost::serialization::tracking_level<T>::value == boost::serialization::track_always
            || (boost::serialization::tracking_level<T>::value == boost::serialization::track_selectively
                && serialized_as_pointer());
    }
    virtual unsigned int version() const {
        return ::boost::serialization::version<T>::value;
    }
    virtual bool is_polymorphic() const {
        return boost::is_polymorphic<T>::value;
    }
    virtual ~oserializer(){}
};

template<class Archive, class T>
BOOST_DLLEXPORT void oserializer<Archive, T>::save_object_data(
    basic_oarchive & ar,    
    const void *x
) const {
    // make sure call is routed through the highest interface that might
    // be specialized by the user.
    BOOST_STATIC_ASSERT(boost::is_const<T>::value == false);
    boost::serialization::serialize_adl(
        boost::serialization::smart_cast_reference<Archive &>(ar),
        * static_cast<T *>(const_cast<void *>(x)),
        version()
    );
}

template<class Archive, class T>
class pointer_oserializer
  : public archive_pointer_oserializer<Archive>
{
    const basic_oserializer & get_basic_serializer() const;
private:
    virtual BOOST_DLLEXPORT void save_object_ptr(
        basic_oarchive & ar,
        const void * x
    ) const BOOST_USED;
public:
    explicit BOOST_DLLEXPORT pointer_oserializer() BOOST_USED;
};

template<class Archive, class T>
const basic_oserializer & 
pointer_oserializer<Archive, T>::get_basic_serializer() const {
    return boost::serialization::singleton<
        oserializer<Archive, T>
    >::get_const_instance();
}

template<class Archive, class T>
BOOST_DLLEXPORT void pointer_oserializer<Archive, T>::save_object_ptr(
    basic_oarchive & ar,
    const void * x
) const {
    assert(NULL != x);
    // make sure call is routed through the highest interface that might
    // be specialized by the user.
    T * t = static_cast<T *>(const_cast<void *>(x));
    const unsigned int file_version = boost::serialization::version<T>::value;
    Archive & ar_impl 
        = boost::serialization::smart_cast_reference<Archive &>(ar);
    boost::serialization::save_construct_data_adl<Archive, T>(
        ar_impl, 
        t, 
        file_version
    );
    ar_impl << boost::serialization::make_nvp(NULL, * t);
}

template<class Archive, class T>
BOOST_DLLEXPORT pointer_oserializer<Archive, T>::pointer_oserializer() :
    archive_pointer_oserializer<Archive>(
        boost::serialization::type_info_implementation<T>::type
            ::get_const_instance()
    )
{
    // make sure appropriate member function is instantiated
    boost::serialization::singleton<
        oserializer<Archive, T> 
    >::get_mutable_instance().set_bpos(this);
}

template<class Archive, class T>
struct save_non_pointer_type {
    // note this bounces the call right back to the archive
    // with no runtime overhead
    struct save_primitive {
        static void invoke(Archive & ar, const T & t){
            save_access::save_primitive(ar, t);
        }
    };
    // same as above but passes through serialization
    struct save_only {
        static void invoke(Archive & ar, const T & t){
            // make sure call is routed through the highest interface that might
            // be specialized by the user.
            boost::serialization::serialize_adl(
                ar, 
                const_cast<T &>(t), 
                ::boost::serialization::version<T>::value
            );
        }
    };
    // adds class information to the archive. This includes
    // serialization level and class version
    struct save_standard {
        static void invoke(Archive &ar, const T & t){
            ar.save_object(
                & t, 
                boost::serialization::singleton<
                    oserializer<Archive, T>
                >::get_const_instance()
            );
        }
    };

    // adds class information to the archive. This includes
    // serialization level and class version
    struct save_conditional {
        static void invoke(Archive &ar, const T &t){
            //if(0 == (ar.get_flags() & no_tracking))
                save_standard::invoke(ar, t);
            //else
            //   save_only::invoke(ar, t);
        }
    };

    typedef 
        BOOST_DEDUCED_TYPENAME mpl::eval_if<
        // if its primitive
            mpl::equal_to<
                boost::serialization::implementation_level<T>,
                mpl::int_<boost::serialization::primitive_type>
            >,
            mpl::identity<save_primitive>,
        // else
        BOOST_DEDUCED_TYPENAME mpl::eval_if<
            // class info / version
            mpl::greater_equal<
                boost::serialization::implementation_level<T>,
                mpl::int_<boost::serialization::object_class_info>
            >,
            // do standard save
            mpl::identity<save_standard>,
        // else
        BOOST_DEDUCED_TYPENAME mpl::eval_if<
                // no tracking
            mpl::equal_to<
                boost::serialization::tracking_level<T>,
                mpl::int_<boost::serialization::track_never>
            >,