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<?php
/**
* Copyright (c) 2013-2020 Nicolò Martini
*
* For the full copyright and license information, please view
* the LICENSE.md file that was distributed with this source code.
*
* @see https://github.com/nicmart/Tree
*/
namespace Tree\Visitor;
use Tree\Node\NodeInterface;
class PostOrderVisitor implements Visitor
{
public function visit(NodeInterface $node)
{
$nodes = [];
foreach ($node->getChildren() as $child) {
$nodes = \array_merge(
$nodes,
$child->accept($this)
);
}
$nodes[] = $node;
return $nodes;
}
}