<?php declare(strict_types=1);

namespace PhpParser\NodeVisitor;

use PhpParser\Node;
use PhpParser\NodeVisitorAbstract;

/**
 * This visitor can be used to find and collect all nodes satisfying some criterion determined by
 * a filter callback.
 */
class FindingVisitor extends NodeVisitorAbstract {
    /** @var callable Filter callback */
    protected $filterCallback;
    /** @var Node[] Found nodes */
    protected array $foundNodes;

    public function __construct(callable $filterCallback) {
        $this->filterCallback = $filterCallback;
    }

    /**
     * Get found nodes satisfying the filter callback.
     *
     * Nodes are returned in pre-order.
     *
     * @return Node[] Found nodes
     */
    public function getFoundNodes(): array {
        return $this->foundNodes;
    }

    public function beforeTraverse(array $nodes): ?array {
        $this->foundNodes = [];

        return null;
    }

    public function enterNode(Node $node) {
        $filterCallback = $this->filterCallback;
        if ($filterCallback($node)) {
            $this->foundNodes[] = $node;
        }

        return null;
    }
}

• [F] CloningVisitor.php
  Delete
• [F] CommentAnnotatingVisitor.php
  Delete
• [F] FindingVisitor.php
  Delete
• [F] FirstFindingVisitor.php
  Delete
• [F] NameResolver.php
  Delete
• [F] NodeConnectingVisitor.php
  Delete
• [F] ParentConnectingVisitor.php
  Delete

Blog Section

Discover the Latest in Digital Payments and NFC Technology

Dive into our blog to explore the cutting-edge trends in digital payments and NFC technology. Stay updated on the innovations that are revolutionizing transactions, boosting security, and making payments quicker and more convenient. Learn how these advancements are shaping the future of financial interactions and driving the global transition towards a cashless world.

The Rise of Contactless Payments:...

In recent years, contactless payments have surged in popularity, driven...

Visit Blog

March 27, 2024

Enhancing Payment Security: The Role...

As digital transactions proliferate, ensuring robust payment security is more critical than ever. Two foundational...

Visit Blog

March 27, 2024

The Future of Digital Wallets:...

Digital wallets have fundamentally transformed how we manage money, offering a streamlined, secure, and highly...

Visit Blog

March 27, 2024