/**
* Remove if node is empty
*
* @see ConfigHelper::removeEmptyXpath()
* @param array $names Node names list in sequence from XPath
* @param ConfigInstance $node
* @param ConfigInstance|null $parent
* @return $this
*/
public function removeIfNodeEmpty($names, $node, $parent = null)
{
if ($node && $node->children()) {
$parentParent = $parent;
$parent = $node;
/** @var ConfigInstance $node */
$node = $node->{current($names)};
if (!next($names)) {
return $this;
}
$this->removeIfNodeEmpty($names, $node, $parent);
if ($parentParent) {
//try to remove original parent
$this->removeIfNodeEmpty($names, $parent, $parentParent);
}
} elseif ($node && $parent && !$node->hasComment()) {
unset($parent->{$node->getName()});
}
return $this;
}
