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115 lines
4.1 KiB
115 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\SubscribedService;
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/**
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* Implementation of ServiceSubscriberInterface that determines subscribed services from
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* method return types. Service ids are available as "ClassName::methodName".
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*
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* @author Kevin Bond <kevinbond@gmail.com>
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*/
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trait ServiceSubscriberTrait
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{
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/** @var ContainerInterface */
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protected $container;
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/**
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* {@inheritdoc}
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*/
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public static function getSubscribedServices(): array
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{
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static $services;
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if (null !== $services) {
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return $services;
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}
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$services = method_exists(get_parent_class(self::class) ?: '', __FUNCTION__) ? parent::getSubscribedServices() : [];
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$attributeOptIn = false;
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if (\PHP_VERSION_ID >= 80000) {
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foreach ((new \ReflectionClass(self::class))->getMethods() as $method) {
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if (self::class !== $method->getDeclaringClass()->name) {
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continue;
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}
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if (!$attribute = $method->getAttributes(SubscribedService::class)[0] ?? null) {
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continue;
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}
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if ($method->isStatic() || $method->isAbstract() || $method->isGenerator() || $method->isInternal() || $method->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, $method->name));
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}
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if (!$returnType = $method->getReturnType()) {
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throw new \LogicException(sprintf('Cannot use "%s" on methods without a return type in "%s::%s()".', SubscribedService::class, $method->name, self::class));
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}
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$serviceId = $returnType instanceof \ReflectionNamedType ? $returnType->getName() : (string) $returnType;
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if ($returnType->allowsNull()) {
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$serviceId = '?'.$serviceId;
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}
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$services[$attribute->newInstance()->key ?? self::class.'::'.$method->name] = $serviceId;
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$attributeOptIn = true;
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}
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}
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if (!$attributeOptIn) {
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foreach ((new \ReflectionClass(self::class))->getMethods() as $method) {
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if ($method->isStatic() || $method->isAbstract() || $method->isGenerator() || $method->isInternal() || $method->getNumberOfRequiredParameters()) {
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continue;
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}
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if (self::class !== $method->getDeclaringClass()->name) {
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continue;
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}
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if (!($returnType = $method->getReturnType()) instanceof \ReflectionNamedType) {
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continue;
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}
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if ($returnType->isBuiltin()) {
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continue;
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}
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if (\PHP_VERSION_ID >= 80000) {
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trigger_deprecation('symfony/service-contracts', '2.5', 'Using "%s" in "%s" without using the "%s" attribute on any method is deprecated.', ServiceSubscriberTrait::class, self::class, SubscribedService::class);
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}
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$services[self::class.'::'.$method->name] = '?'.($returnType instanceof \ReflectionNamedType ? $returnType->getName() : $returnType);
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}
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}
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return $services;
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}
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/**
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* @required
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*
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* @return ContainerInterface|null
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*/
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public function setContainer(ContainerInterface $container)
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{
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$this->container = $container;
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if (method_exists(get_parent_class(self::class) ?: '', __FUNCTION__)) {
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return parent::setContainer($container);
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}
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return null;
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}
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}
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