File vendor/nikic/php-parser/lib/PhpParser/NodeVisitor/ParentConnectingVisitor.php

1:	<?php declare(strict_types=1);
2:
3:	namespace PhpParser\NodeVisitor;
4:
5:	use PhpParser\Node;
6:	use PhpParser\NodeVisitorAbstract;
7:
8:	use function array_pop;
9:	use function count;
10:
11:	/**
12:	* Visitor that connects a child node to its parent node.
13:	*
14:	* On the child node, the parent node can be accessed through
15:	* <code>$node->getAttribute('parent')</code>.
16:	*/
17:	final class ParentConnectingVisitor extends NodeVisitorAbstract {
18:	/**
19:	* @var Node[]
20:	*/
21:	private array $stack = [];
22:
23:	public function beforeTraverse(array $nodes) {
24:	$this->stack = [];
25:	}
26:
27:	public function enterNode(Node $node) {
28:	if (!empty($this->stack)) {
29:	$node->setAttribute('parent', $this->stack[count($this->stack) - 1]);
30:	}
31:
32:	$this->stack[] = $node;
33:	}
34:
35:	public function leaveNode(Node $node) {
36:	array_pop($this->stack);
37:	}
38:	}
39: