public function parse($str, $callback)
{
if (!$str) {
return false;
}
$pattern = new Pattern();
call_user_func_array($callback, [$pattern]);
preg_match_all($pattern->build(), $str, $m);
$keys = $pattern->getKeys();
array_shift($m);
$rows = [];
foreach ($m as $param => $values) {
$key = $keys[$param];
foreach ($values as $num => $value) {
if (!isset($rows[$num])) {
$rows[$num] = new \stdClass();
}
$rows[$num]->{$key} = $value;
}
}
return count($rows) === 1 ? reset($rows) : $rows;
}