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| <?php declare(strict_types = 1); | |
| /** | |
| * Copyright (c) 2017 Holger Woltersdorf & Contributors | |
| * Permission is hereby granted, free of charge, to any person obtaining a copy | |
| * of this software and associated documentation files (the "Software"), to deal | |
| * in the Software without restriction, including without limitation the rights | |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| * copies of the Software, and to permit persons to whom the Software is | |
| * furnished to do so, subject to the following conditions: | |
| * The above copyright notice and this permission notice shall be included in | |
| * all copies or substantial portions of the Software. | |
| */ | |
| namespace IceHawk\IceHawk\Config; | |
| use IceHawk\IceHawk\Exceptions\InvalidEventSubscriberCollection; | |
| use IceHawk\IceHawk\Interfaces\ConfiguresIceHawk; | |
| use IceHawk\IceHawk\PubSub\Interfaces\SubscribesToEvents; | |
| /** | |
| * Class IceHawkConfigGuard | |
| * @package IceHawk\IceHawk\Config | |
| */ | |
| final class ConfigGuard | |
| { | |
| /** @var ConfiguresIceHawk */ | |
| private $config; | |
| /** | |
| * @param ConfiguresIceHawk $config | |
| */ | |
| public function __construct( ConfiguresIceHawk $config ) | |
| { | |
| $this->config = $config; | |
| } | |
| /** | |
| * @throws InvalidEventSubscriberCollection | |
| */ | |
| public function validate() | |
| { | |
| $this->guardEventSubscribersAreValid(); | |
| } | |
| /** | |
| * @throws InvalidEventSubscriberCollection | |
| */ | |
| private function guardEventSubscribersAreValid() | |
| { | |
| $eventSubscribers = $this->config->getEventSubscribers(); | |
| $invalidSubscribers = array_filter( | |
| $eventSubscribers, | |
| function ( $subscriber ) | |
| { | |
| return (!is_object( $subscriber ) || !($subscriber instanceof SubscribesToEvents)); | |
| } | |
| ); | |
| if ( !empty($invalidSubscribers) ) | |
| { | |
| throw (new InvalidEventSubscriberCollection())->withInvalidKeys( array_keys( $invalidSubscribers ) ); | |
| } | |
| } | |
| } |