1: <?php
 2: 
 3: /**
 4:  * This file is part of the Nette Framework (https://nette.org)
 5:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
 6:  * @package Nette\Iterators
 7:  */
 8: 
 9: 
10: 
11: /**
12:  * Applies the callback to the elements of the inner iterator.
13:  *
14:  * @author     David Grudl
15:  * @package Nette\Iterators
16:  */
17: class MapIterator extends IteratorIterator
18: {
19:     /** @var callable */
20:     private $callback;
21: 
22: 
23:     public function __construct(Traversable $iterator, $callback)
24:     {
25:         parent::__construct($iterator);
26:         $this->callback = new Callback($callback);
27:     }
28: 
29: 
30:     public function current()
31:     {
32:         return $this->callback->invoke(parent::current(), parent::key());
33:     }
34: 
35: }
36: