windpress / vendor / symfony / service-contracts / ServiceSubscriberInterface.php

ServiceSubscriberInterface.php in WindPress – Tailwind CSS integration for WordPress 3.0.2, at vendor/symfony/service-contracts/ServiceSubscriberInterface.php

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1	<?php
2
3	/*
4	* This file is part of the Symfony package.
5	*
6	* (c) Fabien Potencier <fabien@symfony.com>
7	*
8	* For the full copyright and license information, please view the LICENSE
9	* file that was distributed with this source code.
10	*/
11	namespace WindPressPackages\Symfony\Contracts\Service;
12
13	/**
14	* A ServiceSubscriber exposes its dependencies via the static {@link getSubscribedServices} method.
15	*
16	* The getSubscribedServices method returns an array of service types required by such instances,
17	* optionally keyed by the service names used internally. Service types that start with an interrogation
18	* mark "?" are optional, while the other ones are mandatory service dependencies.
19	*
20	* The injected service locators SHOULD NOT allow access to any other services not specified by the method.
21	*
22	* It is expected that ServiceSubscriber instances consume PSR-11-based service locators internally.
23	* This interface does not dictate any injection method for these service locators, although constructor
24	* injection is recommended.
25	*
26	* @author Nicolas Grekas <p@tchwork.com>
27	*/
28	interface ServiceSubscriberInterface
29	{
30	/**
31	* Returns an array of service types required by such instances, optionally keyed by the service names used internally.
32	*
33	* For mandatory dependencies:
34	*
35	* * ['logger' => 'Psr\Log\LoggerInterface'] means the objects use the "logger" name
36	* internally to fetch a service which must implement Psr\Log\LoggerInterface.
37	* * ['loggers' => 'Psr\Log\LoggerInterface[]'] means the objects use the "loggers" name
38	* internally to fetch an iterable of Psr\Log\LoggerInterface instances.
39	* * ['Psr\Log\LoggerInterface'] is a shortcut for
40	* * ['Psr\Log\LoggerInterface' => 'Psr\Log\LoggerInterface']
41	*
42	* otherwise:
43	*
44	* * ['logger' => '?Psr\Log\LoggerInterface'] denotes an optional dependency
45	* * ['loggers' => '?Psr\Log\LoggerInterface[]'] denotes an optional iterable dependency
46	* * ['?Psr\Log\LoggerInterface'] is a shortcut for
47	* * ['Psr\Log\LoggerInterface' => '?Psr\Log\LoggerInterface']
48	*
49	* @return string[] The required service types, optionally keyed by service names
50	*/
51	public static function getSubscribedServices();
52	}
53