boost/serialization/extended_type_info_typeid.hpp
#ifndef BOOST_SERIALIZATION_EXTENDED_TYPE_INFO_TYPEID_HPP
#define BOOST_SERIALIZATION_EXTENDED_TYPE_INFO_TYPEID_HPP
/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
// extended_type_info_typeid.hpp: implementation for version that depends
// on runtime typing (rtti - typeid) but uses a user specified string
// as the portable class identifier.
// (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 <typeinfo>
#include <boost/config.hpp>
//#include <boost/static_warning.hpp>
#include <boost/static_assert.hpp>
#include <boost/type_traits/is_polymorphic.hpp>
#include <boost/type_traits/is_const.hpp>
#include <boost/preprocessor/stringize.hpp>
#include <boost/serialization/extended_type_info.hpp>
#include <boost/config/abi_prefix.hpp> // must be the last header
#ifdef BOOST_MSVC
# pragma warning(push)
# pragma warning(disable : 4251 4231 4660 4275)
#endif
namespace boost {
namespace serialization {
namespace detail {
class BOOST_SERIALIZATION_DECL(BOOST_PP_EMPTY()) extended_type_info_typeid_0 :
public extended_type_info
{
private:
virtual bool
less_than(const extended_type_info &rhs) const;
protected:
static const extended_type_info *
get_derived_extended_type_info(const std::type_info & ti);
extended_type_info_typeid_0();
// account for bogus gcc warning
#if defined(__GNUC__)
virtual
#endif
~extended_type_info_typeid_0();
public:
virtual const std::type_info & get_eti() const = 0;
};
///////////////////////////////////////////////////////////////////////////////
// layer to fold T and const T into the same table entry.
template<class T>
class extended_type_info_typeid_1 :
public detail::extended_type_info_typeid_0
{
private:
virtual const std::type_info & get_eti() const {
return typeid(T);
}
protected:
// private constructor to inhibit any existence other than the
// static one
extended_type_info_typeid_1() :
detail::extended_type_info_typeid_0()
{
self_register(); // add type to type table
}
public:
struct is_polymorphic
{
typedef BOOST_DEDUCED_TYPENAME boost::is_polymorphic<T>::type type;
BOOST_STATIC_CONSTANT(bool, value = is_polymorphic::type::value);
};
static const extended_type_info *
get_derived_extended_type_info(const T & t){
// note: this implementation - based on usage of typeid (rtti)
// only works if the class has at least one virtual function.
// BOOST_STATIC_WARNING(
// static_cast<bool>(is_polymorphic::value)
// );
return detail::extended_type_info_typeid_0::get_derived_extended_type_info(typeid(t));
}
static extended_type_info *
get_instance(){
static extended_type_info_typeid_1<T> instance;
return & instance;
}
static void
export_register(const char * key){
get_instance()->key_register(key);
}
};
} // namespace detail
///////////////////////////////////////////////////////////////////////////////
template<class T>
class extended_type_info_typeid :
public detail::extended_type_info_typeid_1<const T>
{};
} // namespace serialization
} // namespace boost
///////////////////////////////////////////////////////////////////////////////
// If no other implementation has been designated as default,
// use this one. To use this implementation as the default, specify it
// before any of the other headers.
#ifndef BOOST_SERIALIZATION_DEFAULT_TYPE_INFO
#define BOOST_SERIALIZATION_DEFAULT_TYPE_INFO
namespace boost {
namespace serialization {
template<class T>
struct extended_type_info_impl {
typedef BOOST_DEDUCED_TYPENAME
boost::serialization::extended_type_info_typeid<T> type;
};
} // namespace serialization
} // namespace boost
#endif
#ifdef BOOST_MSVC
#pragma warning(pop)
#endif
#include <boost/config/abi_suffix.hpp> // pops abi_suffix.hpp pragmas
#endif // BOOST_SERIALIZATION_EXTENDED_TYPE_INFO_TYPEID_HPP