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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// extended_type_info_typeid.cpp: specific implementation of type info
// that is based on typeid
// (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 <algorithm>
#include <set>
#include <boost/assert.hpp>
#include <typeinfo>
#include <cstddef> // NULL
#include <boost/detail/no_exceptions_support.hpp>
#include <boost/serialization/singleton.hpp>
#define BOOST_SERIALIZATION_SOURCE
#include <boost/serialization/extended_type_info_typeid.hpp>
namespace boost {
namespace serialization {
namespace typeid_system {
#define EXTENDED_TYPE_INFO_TYPE_KEY 1
struct type_compare
{
bool
operator()(
const extended_type_info_typeid_0 * lhs,
const extended_type_info_typeid_0 * rhs
) const {
return lhs->is_less_than(*rhs);
}
};
typedef std::multiset<
const extended_type_info_typeid_0 *,
type_compare
> tkmap;
BOOST_SERIALIZATION_DECL(bool)
extended_type_info_typeid_0::is_less_than(
const boost::serialization::extended_type_info & rhs
) const {
// shortcut for common case
if(this == & rhs)
return false;
return 0 != m_ti->before(
*(static_cast<const extended_type_info_typeid_0 &>(rhs).m_ti)
);
}
BOOST_SERIALIZATION_DECL(bool)
extended_type_info_typeid_0::is_equal(
const boost::serialization::extended_type_info & rhs
) const {
return
// note: std::type_info == operator returns an int !!!
// the following permits conversion to bool without a warning.
! (
* m_ti
!= *(static_cast<const extended_type_info_typeid_0 &>(rhs).m_ti)
)
;
}
BOOST_SERIALIZATION_DECL(BOOST_PP_EMPTY())
extended_type_info_typeid_0::extended_type_info_typeid_0(
const char * key
) :
extended_type_info(EXTENDED_TYPE_INFO_TYPE_KEY, key),
m_ti(NULL)
{}
BOOST_SERIALIZATION_DECL(BOOST_PP_EMPTY())
extended_type_info_typeid_0::~extended_type_info_typeid_0()
{}
BOOST_SERIALIZATION_DECL(void)
extended_type_info_typeid_0::type_register(const std::type_info & ti){
m_ti = & ti;
singleton<tkmap>::get_mutable_instance().insert(this);
}
BOOST_SERIALIZATION_DECL(void)
extended_type_info_typeid_0::type_unregister()
{
if(NULL != m_ti){
if(! singleton<tkmap>::is_destroyed()){
tkmap & x = singleton<tkmap>::get_mutable_instance();
tkmap::iterator start = x.lower_bound(this);
tkmap::iterator end = x.upper_bound(this);
BOOST_ASSERT(start != end);
// remove entry in map which corresponds to this type
do{
if(this == *start)
x.erase(start++);
else
++start;
}while(start != end);
}
}
m_ti = NULL;
}
#ifdef BOOST_MSVC
# pragma warning(push)
# pragma warning(disable : 4511 4512)
#endif
// this derivation is used for creating search arguments
class extended_type_info_typeid_arg :
public extended_type_info_typeid_0
{
virtual void * construct(unsigned int /*count*/, ...) const{
BOOST_ASSERT(false);
return NULL;
}
virtual void destroy(void const * const /*p*/) const {
BOOST_ASSERT(false);
}
public:
extended_type_info_typeid_arg(const std::type_info & ti) :
extended_type_info_typeid_0(NULL)
{
// note absense of self register and key as this is used only as
// search argument given a type_info reference and is not to
// be added to the map.
m_ti = & ti;
}
~extended_type_info_typeid_arg(){
m_ti = NULL;
}
};
#ifdef BOOST_MSVC
# pragma warning(pop)
#endif
BOOST_SERIALIZATION_DECL(const extended_type_info *)
extended_type_info_typeid_0::get_extended_type_info(
const std::type_info & ti
) const {
typeid_system::extended_type_info_typeid_arg etia(ti);
const tkmap & t = singleton<tkmap>::get_const_instance();
const tkmap::const_iterator it = t.find(& etia);
if(t.end() == it)
return NULL;
return *(it);
}
} // namespace detail
} // namespace serialization
} // namespace boost
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