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RemoveEmptyControllerArgumentLocatorsPass.php
01 <?php
02
03 /*
04 * This file is part of the Symfony package.
05 *
06 * (c) Fabien Potencier <fabien@symfony.com>
07 *
08 * For the full copyright and license information, please view the LICENSE
09 * file that was distributed with this source code.
10 */
11
12 namespace Symfony\Component\HttpKernel\DependencyInjection;
13
14 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
15 use Symfony\Component\DependencyInjection\ContainerBuilder;
16
17 /**
18 * Removes empty service-locators registered for ServiceValueResolver.
19 *
20 * @author Nicolas Grekas <p@tchwork.com>
21 */
22 class RemoveEmptyControllerArgumentLocatorsPass implements CompilerPassInterface
23 {
24 private $resolverServiceId;
25
26 public function __construct($resolverServiceId = 'argument_resolver.service')
27 {
28 $this->resolverServiceId = $resolverServiceId;
29 }
30
31 public function process(ContainerBuilder $container)
32 {
33 if (false === $container->hasDefinition($this->resolverServiceId)) {
34 return;
35 }
36
37 $serviceResolver = $container->getDefinition($this->resolverServiceId);
38 $controllerLocator = $container->getDefinition((string) $serviceResolver->getArgument(0));
39 $controllers = $controllerLocator->getArgument(0);
40
41 foreach ($controllers as $controller => $argumentRef) {
42 $argumentLocator = $container->getDefinition((string) $argumentRef->getValues()[0]);
43
44 if (!$argumentLocator->getArgument(0)) {
45 // remove empty argument locators
46 $reason = sprintf('Removing service-argument resolver for controller "%s": no corresponding services exist for the referenced types.', $controller);
47 } else {
48 // any methods listed for call-at-instantiation cannot be actions
49 $reason = false;
50 $action = substr(strrchr($controller, ':'), 1);
51 $id = substr($controller, 0, -1 - \strlen($action));
52 $controllerDef = $container->getDefinition($id);
53 foreach ($controllerDef->getMethodCalls() as list($method)) {
54 if (0 === strcasecmp($action, $method)) {
55 $reason = sprintf('Removing method "%s" of service "%s" from controller candidates: the method is called at instantiation, thus cannot be an action.', $action, $id);
56 break;
57 }
58 }
59 if (!$reason) {
60 if ($controllerDef->getClass() === $id) {
61 $controllers[$id.'::'.$action] = $argumentRef;
62 }
63 if ('__invoke' === $action) {
64 $controllers[$id] = $argumentRef;
65 }
66 continue;
67 }
68 }
69
70 unset($controllers[$controller]);
71 $container->log($this, $reason);
72 }
73
74 $controllerLocator->replaceArgument(0, $controllers);
75 }
76 }
77