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:	{
14:	/** @var callable Filter callback */
15:	protected $filterCallback;
16:	/** @var Node[] Found nodes */
17:	protected $foundNodes;
18:
19:	public function __construct(callable $filterCallback) {
20:	$this->filterCallback = $filterCallback;
21:	}
22:
23:	/**
24:	* Get found nodes satisfying the filter callback.
25:	*
26:	* Nodes are returned in pre-order.
27:	*
28:	* @return Node[] Found nodes
29:	*/
30:	public function getFoundNodes() : array {
31:	return $this->foundNodes;
32:	}
33:
34:	public function beforeTraverse(array $nodes) {
35:	$this->foundNodes = [];
36:
37:	return null;
38:	}
39:
40:	public function enterNode(Node $node) {
41:	$filterCallback = $this->filterCallback;
42:	if ($filterCallback($node)) {
43:	$this->foundNodes[] = $node;
44:	}
45:
46:	return null;
47:	}
48:	}
49: