CodeUnitCollectionIterator.php

<?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;

/**
 * @template-implements Iterator<int, CodeUnit>
 */
final class CodeUnitCollectionIterator implements Iterator {
    
    /**
     * @psalm-var list<CodeUnit>
     */
    private array $codeUnits;
    private int $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++;
    }

}