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

1:	<?php declare(strict_types=1);
2:
3:	namespace PhpParser\NodeVisitor;
4:
5:	use PhpParser\Node;
6:	use PhpParser\NodeVisitorAbstract;
7:
8:	/**
9:	* This visitor can be used to find and collect all nodes satisfying some criterion determined by
10:	* a filter callback.
11:	*/
12:	class FindingVisitor extends NodeVisitorAbstract {
13:	/** @var callable Filter callback */
14:	protected $filterCallback;
15:	/** @var list<Node> Found nodes */
16:	protected array $foundNodes;
17:
18:	public function __construct(callable $filterCallback) {
19:	$this->filterCallback = $filterCallback;
20:	}
21:
22:	/**
23:	* Get found nodes satisfying the filter callback.
24:	*
25:	* Nodes are returned in pre-order.
26:	*
27:	* @return list<Node> Found nodes
28:	*/
29:	public function getFoundNodes(): array {
30:	return $this->foundNodes;
31:	}
32:
33:	public function beforeTraverse(array $nodes): ?array {
34:	$this->foundNodes = [];
35:
36:	return null;
37:	}
38:
39:	public function enterNode(Node $node) {
40:	$filterCallback = $this->filterCallback;
41:	if ($filterCallback($node)) {
42:	$this->foundNodes[] = $node;
43:	}
44:
45:	return null;
46:	}
47:	}
48: