$hierarchy
* @var string $prefix
* @var Tree $tree
*/
preg_match_all('/^(\d+) (\w+) ?(.*)/m', $gedcom, $matches);
[, $levels, $tags, $values] = $matches;
$levels = array_map(static fn(string $x): int => (int) $x, $levels);
$keys = array_keys($levels);
$elements = [];
$ids = [];
foreach ($keys as $key) {
$hierarchy[$levels[$key]] = $tags[$key];
$full_tag = implode(':', array_slice($hierarchy, 0, 1 + $levels[$key]));
$elements[$key] = Registry::elementFactory()->make($full_tag);
$ids[$key] = Uuid::uuid4()->toString() . '-' . $full_tag;
}
?>
0 && $levels[$key] > $levels[$key - 1] && $elements[$key] instanceof AbstractXrefElement) : ?>