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<?php |
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namespace Wandu\Router\Loader; |
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use Psr\Container\ContainerInterface; |
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use Psr\Container\NotFoundExceptionInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use ReflectionClass; |
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use RuntimeException; |
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use ReflectionException; |
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use Wandu\Router\Contracts\LoaderInterface; |
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use Wandu\Router\Contracts\MiddlewareInterface; |
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use Wandu\Router\Exception\HandlerNotFoundException; |
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class PsrLoader implements LoaderInterface |
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{ |
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/** @var \Psr\Container\ContainerInterface */ |
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protected $container; |
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/** |
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* @param \Psr\Container\ContainerInterface $container |
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*/ |
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public function __construct(ContainerInterface $container) |
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{ |
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$this->container = $container; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function middleware(string $className, ServerRequestInterface $request): MiddlewareInterface |
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{ |
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/** @var \Wandu\Router\Contracts\MiddlewareInterface $instance */ |
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$instance = $this->createInstance($className, $request); |
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return $instance; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function execute(string $className, string $methodName, ServerRequestInterface $request) |
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{ |
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try { |
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$object = $this->createInstance($className, $request); |
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try { |
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$reflMethod = (new ReflectionClass($className))->getMethod($methodName); |
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} catch (ReflectionException $e) { |
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$reflMethod = null; |
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} |
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if ($reflMethod) { |
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$arguments = $this->getArguments($reflMethod, $request); |
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return call_user_func_array([$object, $methodName], $arguments); |
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} |
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if (method_exists($object, '__call')) { |
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return $object->__call($methodName, [$request]); |
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} |
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} catch (HandlerNotFoundException $e) { |
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throw new HandlerNotFoundException($className, $methodName); |
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} |
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throw new HandlerNotFoundException($className, $methodName); |
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} |
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/** |
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* @param string $className |
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* @param \Psr\Http\Message\ServerRequestInterface $request |
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* @return object |
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*/ |
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public function createInstance(string $className, ServerRequestInterface $request) |
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{ |
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if (class_exists($className)) { |
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$classRefl = new ReflectionClass($className); |
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$constructor = $classRefl->getConstructor(); |
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try { |
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if ($constructor) { |
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$arguments = $this->getArguments($constructor, $request); |
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return new $className(...$arguments); |
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} else { |
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return new $className(); |
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} |
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} catch (RuntimeException $e) {} |
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} elseif ($this->container->has($className)) { // for alias |
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return $this->container->get($className); |
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} |
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throw new HandlerNotFoundException($className); |
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} |
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/** |
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* @param \ReflectionFunctionAbstract $refl |
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* @param \Psr\Http\Message\ServerRequestInterface $request |
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* @return array |
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*/ |
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protected function getArguments(\ReflectionFunctionAbstract $refl, ServerRequestInterface $request) |
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{ |
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$requestAttrs = $request->getAttributes(); |
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$arguments = []; |
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// it from container Resolver.. |
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foreach ($refl->getParameters() as $param) { |
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$paramClass = $param->getClass(); |
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if ($paramClass) { // #2. |
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if ($paramClass->isInstance($request)) { |
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$arguments[] = $request; |
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continue; |
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} |
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$paramClassName = $paramClass->getName(); |
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if (array_key_exists($paramClassName, $requestAttrs)) { |
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$arguments[] = $requestAttrs[$paramClassName]; |
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continue; |
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} |
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if ($this->container->has($paramClassName)) { |
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try { |
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$arguments[] = $this->container->get($paramClassName); |
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continue; |
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} catch (NotFoundExceptionInterface $e) { |
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} |
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} |
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} |
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if ($param->isDefaultValueAvailable()) { |
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$arguments[] = $param->getDefaultValue(); |
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continue; |
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} |
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$paramName = $param->getName(); |
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if (array_key_exists($paramName, $requestAttrs)) { |
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$arguments[] = $requestAttrs[$paramName]; |
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continue; |
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} |
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throw new RuntimeException("not found parameter named \"{$param->getName()}\"."); |
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} |
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return $arguments; |
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} |
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} |
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Wandu /
Framework
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