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libraries/vendor/symfony/service-contracts/ServiceSubscriberTrait.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Contracts\Service;
+
+use Psr\Container\ContainerInterface;
+use Symfony\Contracts\Service\Attribute\Required;
+use Symfony\Contracts\Service\Attribute\SubscribedService;
+
+trigger_deprecation('symfony/contracts', 'v3.5', '"%s" is deprecated, use "ServiceMethodsSubscriberTrait" instead.', ServiceSubscriberTrait::class);
+
+/**
+ * Implementation of ServiceSubscriberInterface that determines subscribed services
+ * from methods that have the #[SubscribedService] attribute.
+ *
+ * Service ids are available as "ClassName::methodName" so that the implementation
+ * of subscriber methods can be just `return $this->container->get(__METHOD__);`.
+ *
+ * @property ContainerInterface $container
+ *
+ * @author Kevin Bond <kevinbond@gmail.com>
+ *
+ * @deprecated since symfony/contracts v3.5, use ServiceMethodsSubscriberTrait instead
+ */
+trait ServiceSubscriberTrait
+{
+    public static function getSubscribedServices(): array
+    {
+        $services = method_exists(get_parent_class(self::class) ?: '', __FUNCTION__) ? parent::getSubscribedServices() : [];
+
+        foreach ((new \ReflectionClass(self::class))->getMethods() as $method) {
+            if (self::class !== $method->getDeclaringClass()->name) {
+                continue;
+            }
+
+            if (!$attribute = $method->getAttributes(SubscribedService::class)[0] ?? null) {
+                continue;
+            }
+
+            if ($method->isStatic() || $method->isAbstract() || $method->isGenerator() || $method->isInternal() || $method->getNumberOfRequiredParameters()) {
+                throw new \LogicException(sprintf('Cannot use "%s" on method "%s::%s()" (can only be used on non-static, non-abstract methods with no parameters).', SubscribedService::class, self::class, $method->name));
+            }
+
+            if (!$returnType = $method->getReturnType()) {
+                throw new \LogicException(sprintf('Cannot use "%s" on methods without a return type in "%s::%s()".', SubscribedService::class, $method->name, self::class));
+            }
+
+            /* @var SubscribedService $attribute */
+            $attribute = $attribute->newInstance();
+            $attribute->key ??= self::class.'::'.$method->name;
+            $attribute->type ??= $returnType instanceof \ReflectionNamedType ? $returnType->getName() : (string) $returnType;
+            $attribute->nullable = $returnType->allowsNull();
+
+            if ($attribute->attributes) {
+                $services[] = $attribute;
+            } else {
+                $services[$attribute->key] = ($attribute->nullable ? '?' : '').$attribute->type;
+            }
+        }
+
+        return $services;
+    }
+
+    #[Required]
+    public function setContainer(ContainerInterface $container): ?ContainerInterface
+    {
+        $ret = null;
+        if (method_exists(get_parent_class(self::class) ?: '', __FUNCTION__)) {
+            $ret = parent::setContainer($container);
+        }
+
+        $this->container = $container;
+
+        return $ret;
+    }
+}