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<?php
declare(strict_types=1);
namespace Andi\GraphQL\TypeResolver\Middleware;
use Andi\GraphQL\Exception\NextHandlerIsEmptyException;
use Andi\GraphQL\TypeResolver\TypeResolverInterface;
use GraphQL\Type\Definition as Webonyx;
use SplPriorityQueue;
final class Next implements TypeResolverInterface
{
private SplPriorityQueue $queue;
public function __construct(
SplPriorityQueue $queue,
private readonly TypeResolverInterface $fallbackResolver,
) {
$this->queue = clone $queue;
}
public function resolve(mixed $type): Webonyx\Type
/** @psalm-suppress RedundantPropertyInitializationCheck */
if (! isset($this->queue)) {
throw new NextHandlerIsEmptyException('Cannot invoke pipeline resolver more than once');
if ($this->queue->isEmpty()) {
unset($this->queue);
return $this->fallbackResolver->resolve($type);
/** @var MiddlewareInterface $middleware */
$middleware = $this->queue->extract();
$next = clone $this;
return $middleware->process($type, $next);
andrey-mokhov /
graphql-php
