Subversion-Projekte lars-tiefland.laravel_shop

<?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 $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) {

        $this->foundNodes = [];

        return null;

    }

    public function enterNode(Node $node) {

        $filterCallback = $this->filterCallback;

        if ($filterCallback($node)) {

            $this->foundNodes[] = $node;

        }

        return null;

    }

}