RequirementCollectionIterator.php
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RequirementCollectionIterator.php
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	<?php declare(strict_types = 1);
	/*
	* This file is part of PharIo\Manifest.
	*
	* Copyright (c) Arne Blankerts <arne@blankerts.de>, Sebastian Heuer <sebastian@phpeople.de>, Sebastian Bergmann <sebastian@phpunit.de> and contributors
	*
	* For the full copyright and license information, please view the LICENSE
	* file that was distributed with this source code.
	*
	*/
	namespace PharIo\Manifest;

	use Iterator;
	use function count;

	/** @template-implements Iterator<int,Requirement> */
	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++;
	}
	}