wikimedia/mediawiki-extensions-CirrusSearch

<?php

namespace CirrusSearch\Iterator;

use Iterator;

/**
 * Applies a callback to all values returned from the iterator
 */
class CallbackIterator extends IteratorDecorator {
    /** @var callable */
    protected $callable;

    public function __construct( Iterator $iterator, $callable ) {
        parent::__construct( $iterator );
        $this->callable = $callable;
    }

    public function current() {
        return call_user_func( $this->callable, $this->iterator->current() );
    }
}