method decod given correspond kei stroke param str kei stroke decod correspond kei stroke kei stroke decod kei stroke str kei stroke str kei stroke token token token str kei stroke kei event util modifi joiner modifi token element element token element token token modifi decod modifi element field kei event field vk element kei stroke kei stroke modifi except exc defin log lp log granular type statement lp log local nest statement log error except exc endif 