1<?php
2/**
3 * Copyright since 2007 PrestaShop SA and Contributors
4 * PrestaShop is an International Registered Trademark & Property of PrestaShop SA
5 *
6 * NOTICE OF LICENSE
7 *
8 * This source file is subject to the Open Software License (OSL 3.0)
9 * that is bundled with this package in the file LICENSE.md.
10 * It is also available through the world-wide-web at this URL:
11 * https://opensource.org/licenses/OSL-3.0
12 * If you did not receive a copy of the license and are unable to
13 * obtain it through the world-wide-web, please send an email
14 * to license@prestashop.com so we can send you a copy immediately.
15 *
16 * DISCLAIMER
17 *
18 * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
19 * versions in the future. If you wish to customize PrestaShop for your
20 * needs please refer to https://devdocs.prestashop.com/ for more information.
21 *
22 * @author    PrestaShop SA and Contributors <contact@prestashop.com>
23 * @copyright Since 2007 PrestaShop SA and Contributors
24 * @license   https://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
25 */
26
27namespace PrestaShop\PrestaShop\Core\Grid\Collection;
28
29use Countable;
30use Iterator;
31
32/**
33 * Class AbstractCollection is responsible for providing base collection implementation.
34 */
35abstract class AbstractCollection implements Iterator, Countable
36{
37    /**
38     * @var array
39     */
40    protected $items = [];
41
42    /**
43     * {@inheritdoc}
44     */
45    public function current()
46    {
47        return current($this->items);
48    }
49
50    /**
51     * @return mixed|false
52     */
53    public function next()
54    {
55        return next($this->items);
56    }
57
58    /**
59     * {@inheritdoc}
60     */
61    public function key()
62    {
63        return key($this->items);
64    }
65
66    /**
67     * {@inheritdoc}
68     */
69    public function valid()
70    {
71        return false !== $this->current();
72    }
73
74    /**
75     * {@inheritdoc}
76     */
77    public function rewind()
78    {
79        reset($this->items);
80    }
81
82    /**
83     * {@inheritdoc}
84     */
85    public function count()
86    {
87        return count($this->items);
88    }
89}
90