boost/serialization/extended_type_info_no_rtti.hpp
#ifndef BOOST_EXTENDED_TYPE_INFO_NO_RTTI_HPP
#define BOOST_EXTENDED_TYPE_INFO_NO_RTTI_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_no_rtti.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 <cassert>
#include <boost/config.hpp>
#include <boost/static_assert.hpp>
#include <boost/type_traits/is_const.hpp>
#include <boost/serialization/extended_type_info.hpp>
#include <boost/mpl/bool.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 {
///////////////////////////////////////////////////////////////////////
// define a special type_info that doesn't depend on rtti which is not
// available in all situations.
// common base class to share type_info_key. This is used to
// identify the method used to keep track of the extended type
class BOOST_SERIALIZATION_DECL(BOOST_PP_EMPTY()) extended_type_info_no_rtti_0 :
public extended_type_info
{
virtual bool
less_than(const boost::serialization::extended_type_info &rhs) const ;
protected:
extended_type_info_no_rtti_0();
// account for bogus gcc warning
#if defined(__GNUC__)
virtual
#endif
~extended_type_info_no_rtti_0();
public:
struct is_polymorphic
{
typedef boost::mpl::bool_<true> type;
BOOST_STATIC_CONSTANT(bool, value = is_polymorphic::type::value);
};
};
template<class T>
class extended_type_info_no_rtti_1 :
public extended_type_info_no_rtti_0
{
protected:
extended_type_info_no_rtti_1(){}
public:
// note borland complains at making this destructor protected
~extended_type_info_no_rtti_1(){};
static const boost::serialization::extended_type_info *
get_derived_extended_type_info(const T & t){
// find the type that corresponds to the most derived type.
// this implementation doesn't depend on typeid() but assumes
// that the specified type has a function of the following signature.
// A common implemention of such a function is to define as a virtual
// function.
const char * derived_key = t.get_key();
assert(NULL != derived_key);
return boost::serialization::extended_type_info::find(derived_key);
}
static boost::serialization::extended_type_info *
get_instance(){
static extended_type_info_no_rtti_1<T> instance;
return & instance;
}
static void
export_register(const char * key){
boost::serialization::extended_type_info * eti;
eti = get_instance();
eti->key_register(key); // initialize key and add to table
eti->self_register(); // add type to type table
}
};
} // namespace detail
template<class T>
class extended_type_info_no_rtti :
public detail::extended_type_info_no_rtti_1<const T>
{
// private constructor to inhibit any existence other than the
// static one
extended_type_info_no_rtti(){}
~extended_type_info_no_rtti(){};
};
} // 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_no_rtti<const 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_EXTENDED_TYPE_INFO_NO_RTTI_HPP