85 lines
2.6 KiB
C++
85 lines
2.6 KiB
C++
// Boost system_error.hpp --------------------------------------------------//
|
|
|
|
// Copyright Beman Dawes 2006
|
|
|
|
// 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 BOOST_SYSTEM_ERROR_HPP
|
|
#define BOOST_SYSTEM_ERROR_HPP
|
|
|
|
#include <string>
|
|
#include <stdexcept>
|
|
#include <cassert>
|
|
#include <boost/system/error_code.hpp>
|
|
|
|
namespace boost
|
|
{
|
|
namespace system
|
|
{
|
|
// class system_error ------------------------------------------------------------//
|
|
|
|
class BOOST_SYMBOL_VISIBLE system_error : public std::runtime_error
|
|
// BOOST_SYMBOL_VISIBLE is needed by GCC to ensure system_error thrown from a shared
|
|
// library can be caught. See svn.boost.org/trac/boost/ticket/3697
|
|
{
|
|
public:
|
|
system_error( error_code ec )
|
|
: std::runtime_error(""), m_error_code(ec) {}
|
|
|
|
system_error( error_code ec, const std::string & what_arg )
|
|
: std::runtime_error(what_arg), m_error_code(ec) {}
|
|
|
|
system_error( error_code ec, const char* what_arg )
|
|
: std::runtime_error(what_arg), m_error_code(ec) {}
|
|
|
|
system_error( int ev, const error_category & ecat )
|
|
: std::runtime_error(""), m_error_code(ev,ecat) {}
|
|
|
|
system_error( int ev, const error_category & ecat,
|
|
const std::string & what_arg )
|
|
: std::runtime_error(what_arg), m_error_code(ev,ecat) {}
|
|
|
|
system_error( int ev, const error_category & ecat,
|
|
const char * what_arg )
|
|
: std::runtime_error(what_arg), m_error_code(ev,ecat) {}
|
|
|
|
virtual ~system_error() throw() {}
|
|
|
|
const error_code & code() const throw() { return m_error_code; }
|
|
const char * what() const throw();
|
|
|
|
private:
|
|
error_code m_error_code;
|
|
mutable std::string m_what;
|
|
};
|
|
|
|
// implementation ------------------------------------------------------//
|
|
|
|
inline const char * system_error::what() const throw()
|
|
// see http://www.boost.org/more/error_handling.html for lazy build rationale
|
|
{
|
|
if ( m_what.empty() )
|
|
{
|
|
#ifndef BOOST_NO_EXCEPTIONS
|
|
try
|
|
#endif
|
|
{
|
|
m_what = this->std::runtime_error::what();
|
|
if ( !m_what.empty() ) m_what += ": ";
|
|
m_what += m_error_code.message();
|
|
}
|
|
#ifndef BOOST_NO_EXCEPTIONS
|
|
catch (...) { return std::runtime_error::what(); }
|
|
#endif
|
|
}
|
|
return m_what.c_str();
|
|
}
|
|
|
|
} // namespace system
|
|
} // namespace boost
|
|
|
|
#endif // BOOST_SYSTEM_ERROR_HPP
|
|
|
|
|