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<?php |
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/** |
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* Lichtenwallner (https://lichtenwallner.at) |
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* |
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* @see https://github.com/jolicht/markdown-cms for the canonical source repository |
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* @license https://github.com/jolicht/markdown-cms/blob/master/LICENSE MIT |
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* @copyright Copyright (c) Johannes Lichtenwallner |
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*/ |
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declare(strict_types = 1); |
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namespace JolichtTest\MarkdownCms; |
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use ArrayObject; |
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use Aura\Di\Container; |
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use Aura\Di\ContainerConfigInterface; |
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/** |
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* Configuration for the Aura.Di container. |
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* |
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* This class provides functionality for the following service types: |
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* |
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* - Aliases |
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* - Delegators |
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* - Factories |
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* - Invokable classes |
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* - Services (known instances) |
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*/ |
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class ExpressiveAuraConfig implements ContainerConfigInterface |
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{ |
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/** |
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* @var array |
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*/ |
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private $config; |
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/** |
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* @param array $config |
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*/ |
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public function __construct(array $config) |
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{ |
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$this->config = $config; |
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} |
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/** |
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* Configure the container |
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* |
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* - Adds the 'config' service. |
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* - If delegators are defined, maps the service to lazyGetCall an |
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* ExpressiveAuraDelegatorFactory::build invocation using the configured |
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* delegator and whatever factory was responsible for it. |
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* - If factories are defined, maps each factory class as a lazily |
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* instantiable service, and the service to lazyGetCall the factory to |
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* create the instance. |
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* - If invokables are defined, maps each to lazyNew the target. |
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* - If aliases are defined, maps each to lazyGet the target. |
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* |
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* @param Container $container |
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* @return void |
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*/ |
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public function define(Container $container) |
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{ |
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// Convert config to an object and inject it |
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$container->set('config', new ArrayObject($this->config, ArrayObject::ARRAY_AS_PROPS)); |
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if (empty($this->config['dependencies'])) { |
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return; |
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} |
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$dependencies = $this->config['dependencies']; |
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// Inject delegator factories |
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// This is done early because Aura.Di does not allow modification of a |
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// service after creation. As such, we need to create custom factories |
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// for each service with delegators. |
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if (isset($dependencies['delegators'])) { |
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$dependencies = $this->marshalDelegators($container, $dependencies); |
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} |
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// Inject services |
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if (isset($dependencies['services'])) { |
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foreach ($dependencies['services'] as $name => $service) { |
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$container->set($name, $service); |
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} |
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} |
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// Inject factories |
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if (isset($dependencies['factories'])) { |
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foreach ($dependencies['factories'] as $service => $factory) { |
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$container->set($factory, $container->lazyNew($factory)); |
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$container->set($service, $container->lazyGetCall($factory, '__invoke', $container)); |
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} |
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} |
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// Inject invokables |
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if (isset($dependencies['invokables'])) { |
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foreach ($dependencies['invokables'] as $service => $class) { |
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$container->set($service, $container->lazyNew($class)); |
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} |
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} |
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// Inject aliases |
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if (isset($dependencies['aliases'])) { |
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foreach ($dependencies['aliases'] as $alias => $target) { |
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$container->set($alias, $container->lazyGet($target)); |
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} |
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} |
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} |
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/** |
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* This method is purposely a no-op. |
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* |
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* @param Container $container |
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* @return void |
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*/ |
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public function modify(Container $container) |
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{ |
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} |
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/** |
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* Marshal all services with delegators. |
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* |
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* @param Container $container |
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* @param array $dependencies |
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* @return array List of dependencies minus any services, factories, or |
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* invokables that match services using delegator factories. |
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*/ |
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private function marshalDelegators(Container $container, array $dependencies) |
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{ |
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foreach ($dependencies['delegators'] as $service => $delegatorNames) { |
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$factory = null; |
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if (isset($dependencies['services'][$service])) { |
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// Marshal from service |
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$instance = $dependencies['services'][$service]; |
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$factory = function () use ($instance) { |
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return $instance; |
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}; |
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unset($dependencies['service'][$service]); |
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} |
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if (isset($dependencies['factories'][$service])) { |
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// Marshal from factory |
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$serviceFactory = $dependencies['factories'][$service]; |
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$factory = function () use ($service, $serviceFactory, $container) { |
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return $serviceFactory($container, $service); |
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}; |
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unset($dependencies['factories'][$service]); |
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} |
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if (isset($dependencies['invokables'][$service])) { |
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// Marshal from invokable |
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$class = $dependencies['invokables'][$service]; |
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$factory = function () use ($class) { |
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return new $class(); |
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}; |
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unset($dependencies['invokables'][$service]); |
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} |
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if (! is_callable($factory)) { |
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continue; |
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} |
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$delegatorFactory = new ExpressiveAuraDelegatorFactory($delegatorNames, $factory); |
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$container->set( |
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$service, |
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$container->lazyGetCall($delegatorFactory, 'build', $container, $service) |
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); |
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} |
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return $dependencies; |
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} |
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} |
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jolicht /
markdown-cms
