<?php declare(strict_types = 1);

/*

 * This file is part of PharIo\Manifest.

 *

 * (c) Arne Blankerts <arne@blankerts.de>, Sebastian Heuer <sebastian@phpeople.de>, Sebastian Bergmann <sebastian@phpunit.de>

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

namespace PharIo\Manifest;



class RequirementCollectionIterator implements \Iterator {

    /** @var Requirement[] */

    private $requirements;



    /** @var int */

    private $position = 0;



    public function __construct(RequirementCollection $requirements) {

        $this->requirements = $requirements->getRequirements();

    }



    public function rewind(): void {

        $this->position = 0;

    }



    public function valid(): bool {

        return $this->position < \count($this->requirements);

    }



    public function key(): int {

        return $this->position;

    }



    public function current(): Requirement {

        return $this->requirements[$this->position];

    }



    public function next(): void {

        $this->position++;

    }

}

