, Sebastian Heuer , Sebastian Bergmann 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 DOMElement; use DOMNodeList; use Iterator; use ReturnTypeWillChange; use function count; use function get_class; use function sprintf; /** @template-implements Iterator */ abstract class ElementCollection implements Iterator { /** @var DOMElement[] */ private $nodes = []; /** @var int */ private $position; public function __construct(DOMNodeList $nodeList) { $this->position = 0; $this->importNodes($nodeList); } #[ReturnTypeWillChange] abstract public function current(); public function next(): void { $this->position++; } public function key(): int { return $this->position; } public function valid(): bool { return $this->position < count($this->nodes); } public function rewind(): void { $this->position = 0; } protected function getCurrentElement(): DOMElement { return $this->nodes[$this->position]; } private function importNodes(DOMNodeList $nodeList): void { foreach ($nodeList as $node) { if (!$node instanceof DOMElement) { throw new ElementCollectionException( sprintf('\DOMElement expected, got \%s', get_class($node)) ); } $this->nodes[] = $node; } } }