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Rework the equivalence logic in terms of the corresponding downstream equivalent

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Peter Dimov
2017-06-22 19:27:55 +03:00
parent 5eda96dcbc
commit 87c427b5df
1 changed files with 26 additions and 11 deletions
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37
include/boost/system/error_code.hpp
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@ -618,45 +618,60 @@ namespace boost
inline bool error_category::std_category::equivalent( int code, inline bool error_category::std_category::equivalent( int code,
const std::error_condition & condition ) const BOOST_NOEXCEPT const std::error_condition & condition ) const BOOST_NOEXCEPT
{ {
if( default_error_condition( code ) == condition ) if( condition.category() == *this )
{ {
return true; boost::system::error_condition bn( condition.value(), *pc_ );
return pc_->equivalent( code, bn );
} }
else if( condition.category() == std::generic_category() else if( condition.category() == std::generic_category()
|| condition.category() == boost::system::generic_category() ) || condition.category() == boost::system::generic_category() )
{ {
boost::system::error_code bc( code, *pc_ );
boost::system::error_condition bn( condition.value(), boost::system::error_condition bn( condition.value(),
boost::system::generic_category() ); boost::system::generic_category() );
return bc == bn; return pc_->equivalent( code, bn );
} }
#ifndef BOOST_NO_RTTI #ifndef BOOST_NO_RTTI
else if( std_category const* pc2 = dynamic_cast< std_category const* >( else if( std_category const* pc2 = dynamic_cast< std_category const* >(
&condition.category() ) ) &condition.category() ) )
{ {
boost::system::error_code bc( code, *pc_ );
boost::system::error_condition bn( condition.value(), *pc2->pc_ ); boost::system::error_condition bn( condition.value(), *pc2->pc_ );
return pc_->equivalent( code, bn );
return bc == bn;
} }
#endif #endif
else else
{ {
return false; return default_error_condition( code ) == condition;
} }
} }
inline bool error_category::std_category::equivalent( const std::error_code & code, inline bool error_category::std_category::equivalent( const std::error_code & code,
int condition ) const BOOST_NOEXCEPT int condition ) const BOOST_NOEXCEPT
{ {
if( *this == code.category() && code.value() == condition ) if( code.category() == *this )
{ {
return true; boost::system::error_code bc( code.value(), *pc_ );
return pc_->equivalent( bc, condition );
} }
else if( code.category() == std::generic_category()
|| code.category() == boost::system::generic_category() )
{
boost::system::error_code bc( code.value(),
boost::system::generic_category() );
return pc_->equivalent( bc, condition );
}
#ifndef BOOST_NO_RTTI
else if( std_category const* pc2 = dynamic_cast< std_category const* >(
&code.category() ) )
{
boost::system::error_code bc( code.value(), *pc2->pc_ );
return pc_->equivalent( bc, condition );
}
#endif
else if( *pc_ == boost::system::generic_category() ) else if( *pc_ == boost::system::generic_category() )
{ {
return code == std::error_condition( condition, std::generic_category() ); return std::generic_category().equivalent( code, condition );
} }
else else
{ {