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

1:	<?php declare(strict_types=1);
2:
3:	namespace PhpParser\NodeVisitor;
4:
5:	use PhpParser\Node;
6:	use PhpParser\NodeTraverser;
7:	use PhpParser\NodeVisitorAbstract;
8:
9:	/**
10:	* This visitor can be used to find the first node satisfying some criterion determined by
11:	* a filter callback.
12:	*/
13:	class FirstFindingVisitor extends NodeVisitorAbstract
14:	{
15:	/** @var callable Filter callback */
16:	protected $filterCallback;
17:	/** @var null\|Node Found node */
18:	protected $foundNode;
19:
20:	public function __construct(callable $filterCallback) {
21:	$this->filterCallback = $filterCallback;
22:	}
23:
24:	/**
25:	* Get found node satisfying the filter callback.
26:	*
27:	* Returns null if no node satisfies the filter callback.
28:	*
29:	* @return null\|Node Found node (or null if not found)
30:	*/
31:	public function getFoundNode() {
32:	return $this->foundNode;
33:	}
34:
35:	public function beforeTraverse(array $nodes) {
36:	$this->foundNode = null;
37:
38:	return null;
39:	}
40:
41:	public function enterNode(Node $node) {
42:	$filterCallback = $this->filterCallback;
43:	if ($filterCallback($node)) {
44:	$this->foundNode = $node;
45:	return NodeTraverser::STOP_TRAVERSAL;
46:	}
47:
48:	return null;
49:	}
50:	}
51: