CodeUnitCollectionIterator.php
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CodeUnitCollectionIterator.php
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	<?php declare(strict_types=1);
	/*
	* This file is part of sebastian/code-unit.
	*
	* (c) 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 SebastianBergmann\CodeUnit;

	use Iterator;

	final class CodeUnitCollectionIterator implements Iterator
	{
	/**
	* @psalm-var list<CodeUnit>
	*/
	private $codeUnits;

	/**
	* @var int
	*/
	private $position = 0;

	public function __construct(CodeUnitCollection $collection)
	{
	$this->codeUnits = $collection->asArray();
	}

	public function rewind(): void
	{
	$this->position = 0;
	}

	public function valid(): bool
	{
	return isset($this->codeUnits[$this->position]);
	}

	public function key(): int
	{
	return $this->position;
	}

	public function current(): CodeUnit
	{
	return $this->codeUnits[$this->position];
	}

	public function next(): void
	{
	$this->position++;
	}
	}