Chris@14: <?php
Chris@14: 
Chris@14: /*
Chris@14:  * This file is part of the Symfony package.
Chris@14:  *
Chris@14:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@14:  *
Chris@14:  * For the full copyright and license information, please view the LICENSE
Chris@14:  * file that was distributed with this source code.
Chris@14:  */
Chris@14: 
Chris@14: namespace Symfony\Component\HttpKernel\DependencyInjection;
Chris@14: 
Chris@14: use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
Chris@14: use Symfony\Component\DependencyInjection\ContainerBuilder;
Chris@14: 
Chris@14: /**
Chris@14:  * Removes empty service-locators registered for ServiceValueResolver.
Chris@14:  *
Chris@14:  * @author Nicolas Grekas <p@tchwork.com>
Chris@14:  */
Chris@14: class RemoveEmptyControllerArgumentLocatorsPass implements CompilerPassInterface
Chris@14: {
Chris@14:     private $resolverServiceId;
Chris@14: 
Chris@14:     public function __construct($resolverServiceId = 'argument_resolver.service')
Chris@14:     {
Chris@14:         $this->resolverServiceId = $resolverServiceId;
Chris@14:     }
Chris@14: 
Chris@14:     public function process(ContainerBuilder $container)
Chris@14:     {
Chris@14:         if (false === $container->hasDefinition($this->resolverServiceId)) {
Chris@14:             return;
Chris@14:         }
Chris@14: 
Chris@14:         $serviceResolver = $container->getDefinition($this->resolverServiceId);
Chris@14:         $controllerLocator = $container->getDefinition((string) $serviceResolver->getArgument(0));
Chris@14:         $controllers = $controllerLocator->getArgument(0);
Chris@14: 
Chris@14:         foreach ($controllers as $controller => $argumentRef) {
Chris@14:             $argumentLocator = $container->getDefinition((string) $argumentRef->getValues()[0]);
Chris@14: 
Chris@14:             if (!$argumentLocator->getArgument(0)) {
Chris@14:                 // remove empty argument locators
Chris@14:                 $reason = sprintf('Removing service-argument resolver for controller "%s": no corresponding services exist for the referenced types.', $controller);
Chris@14:             } else {
Chris@14:                 // any methods listed for call-at-instantiation cannot be actions
Chris@14:                 $reason = false;
Chris@14:                 $action = substr(strrchr($controller, ':'), 1);
Chris@17:                 $id = substr($controller, 0, -1 - \strlen($action));
Chris@14:                 $controllerDef = $container->getDefinition($id);
Chris@14:                 foreach ($controllerDef->getMethodCalls() as list($method)) {
Chris@14:                     if (0 === strcasecmp($action, $method)) {
Chris@14:                         $reason = sprintf('Removing method "%s" of service "%s" from controller candidates: the method is called at instantiation, thus cannot be an action.', $action, $id);
Chris@14:                         break;
Chris@14:                     }
Chris@14:                 }
Chris@14:                 if (!$reason) {
Chris@14:                     if ($controllerDef->getClass() === $id) {
Chris@14:                         $controllers[$id.'::'.$action] = $argumentRef;
Chris@14:                     }
Chris@14:                     if ('__invoke' === $action) {
Chris@14:                         $controllers[$id] = $argumentRef;
Chris@14:                     }
Chris@14:                     continue;
Chris@14:                 }
Chris@14:             }
Chris@14: 
Chris@14:             unset($controllers[$controller]);
Chris@14:             $container->log($this, $reason);
Chris@14:         }
Chris@14: 
Chris@14:         $controllerLocator->replaceArgument(0, $controllers);
Chris@14:     }
Chris@14: }