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101 lines
4.1 KiB
101 lines
4.1 KiB
<?php |
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/* |
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* This file is part of the Symfony package. |
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* |
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* (c) Fabien Potencier <fabien@symfony.com> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Symfony\Contracts\Service; |
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use Psr\Container\ContainerInterface; |
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use Symfony\Contracts\Service\Attribute\Required; |
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use Symfony\Contracts\Service\Attribute\SubscribedService; |
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/** |
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* Implementation of ServiceSubscriberInterface that determines subscribed services |
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* from methods that have the #[SubscribedService] attribute. |
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* |
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* Service ids are available as "ClassName::methodName" so that the implementation |
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* of subscriber methods can be just `return $this->container->get(__METHOD__);`. |
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* |
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* @author Kevin Bond <kevinbond@gmail.com> |
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*/ |
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trait ServiceMethodsSubscriberTrait |
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{ |
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protected ContainerInterface $container; |
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public static function getSubscribedServices(): array |
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{ |
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$services = method_exists(get_parent_class(self::class) ?: '', __FUNCTION__) ? parent::getSubscribedServices() : []; |
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$reflectors = [ |
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...(new \ReflectionClass(self::class))->getMethods(), |
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...(new \ReflectionClass(self::class))->getProperties(), |
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]; |
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foreach ($reflectors as $reflector) { |
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if (self::class !== $reflector->class) { |
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continue; |
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} |
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if (!$reflectionAttribute = $reflector->getAttributes(SubscribedService::class)[0] ?? null) { |
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continue; |
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} |
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if ($reflector instanceof \ReflectionMethod) { |
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if ($reflector->isStatic() || $reflector->isAbstract() || $reflector->isGenerator() || $reflector->isInternal() || $reflector->getNumberOfRequiredParameters()) { |
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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, $reflector->name)); |
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} |
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if (!$autowireType = $reflector->getReturnType()) { |
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throw new \LogicException(\sprintf('Cannot use "%s" on methods without a return type in "%s::%s()".', SubscribedService::class, $reflector->name, self::class)); |
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} |
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$defaultKey = self::class.'::'.$reflector->name; |
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} elseif ($reflector instanceof \ReflectionProperty) { |
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if (\PHP_VERSION_ID < 80400 || !$reflector->hasHook(\PropertyHookType::Get)) { |
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throw new \LogicException(\sprintf('Cannot use "%s" on property "%s::$%s" (can only be used on properties with a get hook).', SubscribedService::class, self::class, $reflector->name)); |
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} |
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if (!$autowireType = $reflector->getType()) { |
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throw new \LogicException(\sprintf('Cannot use "%s" on properties without a type in "%s::$%s".', SubscribedService::class, $reflector->name, self::class)); |
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} |
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$defaultKey = self::class.'::$'.$reflector->name.'::get'; |
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} else { |
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throw new \LogicException('Unexpected reflector: '.get_debug_type($reflector)); |
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} |
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/* @var SubscribedService $attribute */ |
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$attribute = $reflectionAttribute->newInstance(); |
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$attribute->key ??= $defaultKey; |
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$attribute->type ??= $autowireType instanceof \ReflectionNamedType ? $autowireType->getName() : (string) $autowireType; |
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$attribute->nullable = $attribute->nullable ?: $autowireType->allowsNull(); |
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if ($attribute->attributes) { |
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$services[] = $attribute; |
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} else { |
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$services[$attribute->key] = ($attribute->nullable ? '?' : '').$attribute->type; |
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} |
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} |
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return $services; |
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} |
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#[Required] |
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public function setContainer(ContainerInterface $container): ?ContainerInterface |
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{ |
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$ret = null; |
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if (method_exists(get_parent_class(self::class) ?: '', __FUNCTION__)) { |
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$ret = parent::setContainer($container); |
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} |
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$this->container = $container; |
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return $ret; |
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} |
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}
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