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<?php |
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/******************************************************************************* |
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* This file is part of the GraphQL Bundle package. |
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* |
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* (c) YnloUltratech <[email protected]> |
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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 Ynlo\GraphQLBundle\Component\AutoWire; |
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use Doctrine\Common\Inflector\Inflector; |
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use Symfony\Component\DependencyInjection\ContainerAwareInterface; |
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use Symfony\Component\DependencyInjection\ContainerAwareTrait; |
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/** |
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* Based on the principle of symfony autowiring (https://symfony.com/doc/current/service_container/autowiring.html) |
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* this autoWire is used to create a instance and inject dependencies using constructor of given class. |
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* |
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* - Remove the need of register service for simple classes, like resolvers |
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* - Does not impact the performance in dev or prod |
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* |
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* Caveats: |
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* - Only works in a constructor |
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* - Only works if the constructor typehint match exactly with desired service or the param name match with the service or parameter name |
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* |
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* How it works? |
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* |
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* Services: |
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* |
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* - Firstly try to find a service based on constructor type hint |
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* - If not exist any service registered with this type, then try to find using the service name based on argument name |
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* Service Name Conventions: |
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* $service => '@service' |
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* $serviceName => '@service_name' |
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* $serviceName_WithDot => '@service_name.with_dot' |
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* |
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* NOTE: in any case, services require ALWAYS the type in the constructor. |
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* |
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* Parameters: |
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* - If the type hint of the argument is not defined or is any scalar type |
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* a parameter will be injected using the same naming convention of services |
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*/ |
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class AutoWire implements ContainerAwareInterface |
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{ |
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use ContainerAwareTrait; |
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/** |
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* @param string $class |
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* |
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* @return mixed |
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*/ |
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public function createInstance(string $class) |
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{ |
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$refClass = new \ReflectionClass($class); |
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$args = []; |
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if ($refClass->getConstructor()) { |
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foreach ($refClass->getConstructor()->getParameters() as $parameter) { |
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$name = Inflector::tableize(str_replace('_', '.', $parameter->getName())); |
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$dependency = null; |
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if ($parameter->getClass()) { |
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if ($this->container->has($parameter->getClass()->getName())) { |
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$dependency = $this->container->get($parameter->getClass()->getName()); |
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} elseif ($this->container->has($name)) { |
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$dependency = $this->container->get($name); |
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} |
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} elseif ($this->container->hasParameter($name)) { |
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$dependency = $this->container->getParameter($name); |
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} |
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$args[] = $dependency; |
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} |
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} |
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return $refClass->newInstanceArgs($args); |
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} |
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} |
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