public function copyFrom(\FutoIn\AsyncSteps $other)
{
if (!$other instanceof \FutoIn\RI\AsyncSteps) {
throw new \FutoIn\Error(\FutoIn\Error::InternalError);
}
$this->_sanityCheck();
// Copy steps
$oq = $other->_getInnerQueue();
$oq->rewind();
if ($oq->valid()) {
$q = $this->_queue;
if (!$q) {
$q = new \SplQueue();
$this->_queue = $q;
}
for (; $oq->valid(); $oq->next()) {
$q->enqueue($oq->current());
}
}
// Copy state
$s = $this->state();
foreach ($other->state() as $k => $v) {
if (!isset($s->{$k})) {
$s->{$k} = $v;
}
}
}
