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Extract error_category implementation into its own header

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Peter Dimov
2020-08-27 03:23:00 +03:00
parent cc49bc4457
commit a93572ab16
2 changed files with 96 additions and 65 deletions
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95
include/boost/system/detail/error_category_impl.hpp Normal file
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@ -0,0 +1,95 @@
#ifndef BOOST_SYSTEM_DETAIL_ERROR_CATEGORY_IMPL_HPP_INCLUDED
#define BOOST_SYSTEM_DETAIL_ERROR_CATEGORY_IMPL_HPP_INCLUDED
// Copyright Beman Dawes 2006, 2007
// Copyright Christoper Kohlhoff 2007
// Copyright Peter Dimov 2017, 2018
//
// 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)
//
// See library home page at http://www.boost.org/libs/system
#include <boost/system/detail/error_category.hpp>
#include <boost/system/detail/error_condition.hpp>
#include <boost/system/detail/error_code.hpp>
#include <boost/config.hpp>
#include <string>
#include <cstring>
namespace boost
{
namespace system
{
// error_category default implementation
inline error_condition error_category::default_error_condition( int ev ) const BOOST_NOEXCEPT
{
return error_condition( ev, *this );
}
inline bool error_category::equivalent( int code, const error_condition & condition ) const BOOST_NOEXCEPT
{
return default_error_condition( code ) == condition;
}
inline bool error_category::equivalent( const error_code & code, int condition ) const BOOST_NOEXCEPT
{
return *this == code.category() && code.value() == condition;
}
inline char const * error_category::message( int ev, char * buffer, std::size_t len ) const BOOST_NOEXCEPT
{
if( len == 0 )
{
return buffer;
}
if( len == 1 )
{
buffer[0] = 0;
return buffer;
}
#if !defined(BOOST_NO_EXCEPTIONS)
try
#endif
{
std::string m = this->message( ev );
# if defined( BOOST_MSVC )
# pragma warning( push )
# pragma warning( disable: 4996 )
# elif defined(__clang__) && defined(__has_warning)
# pragma clang diagnostic push
# if __has_warning("-Wdeprecated-declarations")
# pragma clang diagnostic ignored "-Wdeprecated-declarations"
# endif
# endif
std::strncpy( buffer, m.c_str(), len - 1 );
buffer[ len-1 ] = 0;
# if defined( BOOST_MSVC )
# pragma warning( pop )
# elif defined(__clang__) && defined(__has_warning)
# pragma clang diagnostic pop
# endif
return buffer;
}
#if !defined(BOOST_NO_EXCEPTIONS)
catch( ... )
{
return "Message text unavailable";
}
#endif
}
} // namespace system
} // namespace boost
#endif // #ifndef BOOST_SYSTEM_DETAIL_ERROR_CATEGORY_IMPL_HPP_INCLUDED

66
include/boost/system/error_code.hpp
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@ -20,6 +20,7 @@
#include <boost/system/detail/error_condition.hpp>
#include <boost/system/detail/error_code.hpp>
#include <boost/system/detail/throws.hpp>
#include <boost/system/detail/error_category_impl.hpp>
#include <boost/system/api_config.hpp>
#include <boost/system/detail/config.hpp>
#include <boost/cstdint.hpp>
@ -93,71 +94,6 @@ BOOST_SYSTEM_CONSTEXPR inline error_condition make_error_condition( errc_t e ) B
} // namespace errc
// error_category default implementation
inline error_condition error_category::default_error_condition( int ev ) const BOOST_NOEXCEPT
{
return error_condition( ev, *this );
}
inline bool error_category::equivalent( int code, const error_condition & condition ) const BOOST_NOEXCEPT
{
return default_error_condition( code ) == condition;
}
inline bool error_category::equivalent( const error_code & code, int condition ) const BOOST_NOEXCEPT
{
return *this == code.category() && code.value() == condition;
}
inline char const * error_category::message( int ev, char * buffer, std::size_t len ) const BOOST_NOEXCEPT
{
if( len == 0 )
{
return buffer;
}
if( len == 1 )
{
buffer[0] = 0;
return buffer;
}
#if !defined(BOOST_NO_EXCEPTIONS)
try
#endif
{
std::string m = this->message( ev );
# if defined( BOOST_MSVC )
# pragma warning( push )
# pragma warning( disable: 4996 )
# elif defined(__clang__) && defined(__has_warning)
# pragma clang diagnostic push
# if __has_warning("-Wdeprecated-declarations")
# pragma clang diagnostic ignored "-Wdeprecated-declarations"
# endif
# endif
std::strncpy( buffer, m.c_str(), len - 1 );
buffer[ len-1 ] = 0;
# if defined( BOOST_MSVC )
# pragma warning( pop )
# elif defined(__clang__) && defined(__has_warning)
# pragma clang diagnostic pop
# endif
return buffer;
}
#if !defined(BOOST_NO_EXCEPTIONS)
catch( ... )
{
return "Message text unavailable";
}
#endif
}
} // namespace system
} // namespace boost