forked from boostorg/exception
106 lines
2.6 KiB
C++
106 lines
2.6 KiB
C++
//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_0C5D492E909711DCB658AD4556D89593
|
|
#define UUID_0C5D492E909711DCB658AD4556D89593
|
|
|
|
#include <boost/exception/exception.hpp>
|
|
#include <boost/detail/workaround.hpp>
|
|
#include <boost/config.hpp>
|
|
#include <stddef.h>
|
|
|
|
namespace
|
|
boost
|
|
{
|
|
namespace
|
|
exception_detail
|
|
{
|
|
template <class T>
|
|
struct
|
|
error_info_injector:
|
|
public T,
|
|
public exception
|
|
{
|
|
explicit
|
|
error_info_injector( T const & x ):
|
|
T(x)
|
|
{
|
|
}
|
|
|
|
~error_info_injector() throw()
|
|
{
|
|
}
|
|
|
|
char const *
|
|
diagnostic_information() const throw()
|
|
{
|
|
return boost::exception::_diagnostic_information(T::what());
|
|
}
|
|
};
|
|
|
|
struct large_size { char c[256]; };
|
|
large_size dispatch( exception * );
|
|
|
|
struct small_size { };
|
|
small_size dispatch( void * );
|
|
|
|
template <class,size_t>
|
|
struct enable_error_info_helper;
|
|
|
|
template <class T>
|
|
struct
|
|
enable_error_info_helper<T,sizeof(large_size)>
|
|
{
|
|
typedef T type;
|
|
};
|
|
|
|
template <class T>
|
|
struct
|
|
enable_error_info_helper<T,sizeof(small_size)>
|
|
{
|
|
typedef error_info_injector<T> type;
|
|
};
|
|
|
|
#if BOOST_WORKAROUND(__BORLANDC__,BOOST_TESTED_AT(0x582))
|
|
template <class T>
|
|
struct
|
|
sizeof_dispatch
|
|
{
|
|
BOOST_STATIC_CONSTANT(int, value = sizeof(dispatch((T*)0)) );
|
|
};
|
|
|
|
template <class T>
|
|
struct
|
|
enable_error_info_return_type
|
|
{
|
|
typedef typename enable_error_info_helper<T,sizeof_dispatch<T>::value>::type type;
|
|
};
|
|
#else
|
|
template <class T>
|
|
struct
|
|
enable_error_info_return_type
|
|
{
|
|
typedef typename enable_error_info_helper<T,sizeof(dispatch((T*)0))>::type type;
|
|
};
|
|
#endif
|
|
}
|
|
|
|
template <class T>
|
|
#if !BOOST_WORKAROUND(__BORLANDC__,BOOST_TESTED_AT(0x582))
|
|
typename
|
|
#endif
|
|
exception_detail::enable_error_info_return_type<T>::type
|
|
enable_error_info( T const & x )
|
|
{
|
|
return
|
|
#if !BOOST_WORKAROUND(__BORLANDC__,BOOST_TESTED_AT(0x582))
|
|
typename
|
|
#endif
|
|
exception_detail::enable_error_info_return_type<T>::type(x);
|
|
}
|
|
}
|
|
|
|
#endif
|