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<?php |
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/** |
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* This code is licensed under the BSD 3-Clause License. |
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* |
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* Copyright (c) 2017, Maks Rafalko |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* * Redistributions of source code must retain the above copyright notice, this |
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* list of conditions and the following disclaimer. |
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* |
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* * Redistributions in binary form must reproduce the above copyright notice, |
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* this list of conditions and the following disclaimer in the documentation |
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* and/or other materials provided with the distribution. |
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* |
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* * Neither the name of the copyright holder nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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declare(strict_types=1); |
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namespace Infection\Event\EventDispatcher; |
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use function get_class; |
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use Infection\Event\Subscriber\EventSubscriber; |
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use ReflectionClass; |
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use ReflectionMethod; |
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use ReflectionNamedType; |
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use Webmozart\Assert\Assert; |
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/** |
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* @internal |
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*/ |
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final class SyncEventDispatcher implements EventDispatcher |
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{ |
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/** |
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* @var callable[][] |
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*/ |
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private $listeners = []; |
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public function dispatch(object $event): void |
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{ |
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$name = get_class($event); |
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foreach ($this->getListeners($name) as $listener) { |
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$listener($event); |
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} |
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} |
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public function addSubscriber(EventSubscriber $eventSubscriber): void |
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{ |
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foreach ($this->inferSubscribedEvents($eventSubscriber) as $eventName => $listener) { |
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$this->listeners[$eventName][] = $listener; |
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} |
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} |
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/** |
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* @return iterable|callable[] |
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*/ |
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private function inferSubscribedEvents(EventSubscriber $eventSubscriber): iterable |
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{ |
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$class = new ReflectionClass($eventSubscriber); |
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$methods = $class->getMethods(ReflectionMethod::IS_PUBLIC); |
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foreach ($methods as $method) { |
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/** @var ReflectionMethod $method */ |
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if ($method->isConstructor()) { |
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continue; |
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} |
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foreach ($method->getParameters() as $param) { |
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$paramClass = $param->getType(); |
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Assert::isInstanceOf($paramClass, ReflectionNamedType::class); |
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$closure = $method->getClosure($eventSubscriber); |
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Assert::notNull($closure); |
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// Returning a closure instead of array [$eventSubscriber, $method->name], should work the same |
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yield $paramClass->getName() => $closure; |
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break; |
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} |
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} |
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} |
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/** |
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* @return callable[] |
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*/ |
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private function getListeners(string $eventName): array |
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{ |
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return $this->listeners[$eventName] ?? []; |
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} |
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} |
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