Subversion-Projekte lars-tiefland.laravel_shop

<?php declare(strict_types=1);

namespace PhpParser\NodeVisitor;

use function array_pop;

use function count;

use PhpParser\Node;

use PhpParser\NodeVisitorAbstract;

/**

 * Visitor that connects a child node to its parent node.

 *

 * On the child node, the parent node can be accessed through

 * <code>$node->getAttribute('parent')</code>.

 */

final class ParentConnectingVisitor extends NodeVisitorAbstract

{

    /**

     * @var Node[]

     */

    private $stack = [];

    public function beforeTraverse(array $nodes)

    {

        $this->stack = [];

    }

    public function enterNode(Node $node)

    {

        if (!empty($this->stack)) {

            $node->setAttribute('parent', $this->stack[count($this->stack) - 1]);

        }

        $this->stack[] = $node;

    }

    public function leaveNode(Node $node)

    {

        array_pop($this->stack);

    }

}