boost_exception/include/boost/exception/cloning.hpp

//Copyright (c) 2006-2008 Emil Dotchevski and Reverge Studios, Inc.

//Distributed under 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)

#ifndef UUID_FA5836A2CADA11DC8CD47C8555D89593
#define UUID_FA5836A2CADA11DC8CD47C8555D89593

#include <boost/exception/enable_exception_cloning.hpp>
#include <boost/exception/exception.hpp>
#include <boost/exception/detail/cloning_base.hpp>
#include <exception>

namespace
boost
	{
	class
	unknown_exception:
		public exception,
		public std::exception
		{
		public:

		explicit
		unknown_exception()
			{
			}

		explicit
		unknown_exception( boost::exception const & x ):
			boost::exception(x)
			{
			}
		};

	typedef intrusive_ptr<exception_detail::clone_base const> exception_ptr;

	template <class T>
	exception_ptr
	clone_exception( T const & e )
		{
		if( boost::exception_detail::cloning_base const * cb = dynamic_cast<boost::exception_detail::cloning_base const *>(&e) )
			if( exception_detail::clone_base const * c = cb->clone() )
				return exception_ptr(c);
		if( boost::exception const * be = dynamic_cast<boost::exception const *>(&e) )
			return exception_ptr(exception_detail::make_clone(unknown_exception(*be)));
		else
			return exception_ptr(exception_detail::make_clone(unknown_exception()));
		}

	inline
	void
	rethrow_exception( exception_ptr const & p )
		{
		p->rethrow();
		}
	}

#endif