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<?php
declare(strict_types=1);
namespace Remorhaz\JSON\Path\Runtime\Aggregator;
use function iterator_count;
use Remorhaz\JSON\Data\Value\ArrayValueInterface;
use Remorhaz\JSON\Path\Value\LiteralScalarValue;
use Remorhaz\JSON\Data\Value\ValueInterface;
final class LengthAggregator implements ValueAggregatorInterface
{
public function tryAggregate(ValueInterface $value): ?ValueInterface
$length = $value instanceof ArrayValueInterface
? iterator_count($value->createChildIterator())
: null;
return isset($length)
? new LiteralScalarValue($length)
}
remorhaz /
php-json-path
