if ( !segment.HasTag( "abc" ) )

return nullptr;

const size_t segment_start { segment.start };

try {

// skip if return value is None

const py::object output { py_entry( TranslatorQuery( input ) ) };

if ( output.is_none() )

return nullptr;

const py::list output_list { output };

// skip if returned list is empty

if ( output_list.empty() )

return nullptr;

// create translation list from the returned list

const rime::an<rime::FifoTranslation> translation { rime::New<rime::FifoTranslation>() };

for ( const py::handle& candidate : output_list ) {

// get all the 5 attributes from the object

const std::string text { candidate.attr( "text" ).cast<std::string>() };

const size_t length { candidate.attr( "length" ).cast<size_t>() };

const std::string candidate_type { candidate.attr( "candidate_type" ).cast<std::string>() };

const std::string comment { candidate.attr( "comment" ).cast<std::string>() };

const std::string preedit { candidate.attr( "preedit" ).cast<std::string>() };

translation->Append( rime::New<rime::SimpleCandidate>( candidate_type, segment_start, segment_start + length, text, comment, preedit ) );

}

return translation;

} catch ( const py::error_already_set& e ) {

LOG( ERROR ) << e.what();

}

return nullptr;