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added functions current_exception_cast, current_exception_diagnostic_information, various other minor changes, documentation update

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[SVN r52236]
This commit is contained in:
Emil Dotchevski
2009-04-07 18:33:44 +00:00
parent 0148c3a580
commit 027c0ff919
94 changed files with 7484 additions and 5888 deletions
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121
include/boost/exception/diagnostic_information.hpp
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@ -1,4 +1,4 @@
//Copyright (c) 2006-2008 Emil Dotchevski and Reverge Studios, Inc.
//Copyright (c) 2006-2009 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)
@ -8,6 +8,8 @@
#include <boost/config.hpp>
#include <boost/exception/get_error_info.hpp>
#include <boost/exception/current_exception_cast.hpp>
#include <boost/utility/enable_if.hpp>
#include <exception>
#include <sstream>
#include <string>
@ -18,6 +20,38 @@ boost
namespace
exception_detail
{
template <class T>
struct
enable_boost_exception_overload
{
typedef struct yes { char q[100]; };
typedef char no;
static yes check(exception const *);
static no check(...);
enum e { value=sizeof(check((T*)0))==sizeof(yes) };
};
template <class T>
struct
enable_std_exception_overload
{
typedef struct yes { char q[100]; };
typedef char no;
static yes check(std::exception const *);
static no check(...);
enum e { value = !enable_boost_exception_overload<T>::value && sizeof(check((T*)0))==sizeof(yes) };
};
#ifndef BOOST_NO_RTTI
template <class T>
inline
std::string
dynamic_exception_type( T const & x )
{
return std::string("Dynamic exception type: ") + BOOST_EXCEPTION_DYNAMIC_TYPEID(x).name();
}
#endif
inline
char const *
get_diagnostic_information( exception const & x )
@ -36,33 +70,76 @@ boost
#endif
return 0;
}
inline
std::string
boost_diagnostic_information( exception const & x )
{
std::ostringstream tmp;
if( char const * const * f=get_error_info<throw_file>(x) )
{
tmp << *f;
if( int const * l=get_error_info<throw_line>(x) )
tmp << '(' << *l << "): ";
}
tmp << "Throw in function ";
if( char const * const * fn=get_error_info<throw_function>(x) )
tmp << *fn;
else
tmp << "(unknown)";
tmp << std::endl;
#ifndef BOOST_NO_RTTI
tmp << dynamic_exception_type(x) << std::endl;
if( std::exception const * e=dynamic_cast<std::exception const *>(&x) )
tmp << "std::exception::what: " << e->what() << std::endl;
#endif
if( char const * s=exception_detail::get_diagnostic_information(x) )
if( *s )
tmp << s;
return tmp.str();
}
inline
std::string
std_diagnostic_information( std::exception const & x )
{
std::ostringstream tmp;
#ifndef BOOST_NO_RTTI
if( exception const * e=dynamic_cast<exception const *>(&x) )
return boost_diagnostic_information(*e);
tmp << dynamic_exception_type(x) << std::endl;
#endif
tmp << "std::exception::what: " << x.what() << std::endl;
return tmp.str();
}
}
template <class T>
inline
typename enable_if<exception_detail::enable_boost_exception_overload<T>,std::string>::type
diagnostic_information( T const & e )
{
return exception_detail::boost_diagnostic_information(e);
}
template <class T>
inline
typename enable_if<exception_detail::enable_std_exception_overload<T>,std::string>::type
diagnostic_information( T const & e )
{
return exception_detail::std_diagnostic_information(e);
}
inline
std::string
diagnostic_information( exception const & x )
current_exception_diagnostic_information()
{
std::ostringstream tmp;
if( boost::shared_ptr<char const * const> f=get_error_info<throw_file>(x) )
{
tmp << *f;
if( boost::shared_ptr<int const> l=get_error_info<throw_line>(x) )
tmp << '(' << *l << "): ";
}
tmp << "Throw in function ";
if( boost::shared_ptr<char const * const> fn=get_error_info<throw_function>(x) )
tmp << *fn;
if( boost::exception const * e=current_exception_cast<boost::exception const>() )
return diagnostic_information(*e);
else if( std::exception const * e=current_exception_cast<std::exception const>() )
return diagnostic_information(*e);
else
tmp << "(unknown)";
#ifndef BOOST_NO_RTTI
tmp << "\nDynamic exception type: " << BOOST_EXCEPTION_DYNAMIC_TYPEID(x).name();
if( std::exception const * e=dynamic_cast<std::exception const *>(&x) )
tmp << "\nstd::exception::what: " << e->what();
#endif
if( char const * s=exception_detail::get_diagnostic_information(x) )
if( *s )
tmp << '\n' << s;
return tmp.str();
return "No diagnostic information available.";
}
}