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<?php
declare(strict_types=1);
namespace Zanzara\Middleware;
use Psr\Container\ContainerInterface;
use Zanzara\Support\CallableResolver;
/**
* Middleware is a LIFO (Last In First Out) stack.
*
*/
abstract class MiddlewareCollector
{
use CallableResolver;
* Tip of the middleware stack.
* @var MiddlewareNode
protected $tip;
* @var ContainerInterface
private $container;
* MiddlewareCollector constructor.
* @param ContainerInterface $container
public function __construct(ContainerInterface $container)
$this->container = $container;
}
* Last in, first out.
* @param MiddlewareInterface|callable $middleware
* @return MiddlewareCollector
* @throws \DI\DependencyException
* @throws \DI\NotFoundException
public function middleware($middleware): self
// if not an instance implementing middleware interface, try to resolve the callable
if (!($middleware instanceof MiddlewareInterface)) {
$middleware = $this->getCallable($middleware);
$next = $this->tip;
$node = new MiddlewareNode($middleware, $next);
$this->tip = $node;
return $this;
badfarm /
zanzara
