Code Coverage for /Users/ericduran/Sites/drupal/drupal/core/lib/Drupal/Core/PageCache/ChainResponsePolicy.php

1	<?php
2	/**
3	* @file
4	* Contains \Drupal\Core\PageCache\ChainResponsePolicy.
5	*/
6
7	namespace Drupal\Core\PageCache;
8
9	use Symfony\Component\HttpFoundation\Request;
10	use Symfony\Component\HttpFoundation\Response;
11
12	/**
13	* Implements a compound response policy.
14	*
15	* When evaluating the compound policy, all of the contained rules are applied
16	* to the response. The overall result is computed according to the following
17	* rules:
18	*
19	* <ol>
20	* <li>Returns static::DENY if any of the rules evaluated to static::DENY</li>
21	* <li>Otherwise returns NULL</li>
22	* </ol>
23	*/
24	class ChainResponsePolicy implements ChainResponsePolicyInterface {
25
26	/**
27	* A list of policy rules to apply when this policy is checked.
28	*
29	* @var \Drupal\Core\PageCache\ResponsePolicyInterface[]
30	*/
31	protected $rules = [];
32
33	/**
34	* {@inheritdoc}
35	*/
36	public function check(Response $response, Request $request) {
37	foreach ($this->rules as $rule) {
38	$result = $rule->check($response, $request);
39	if ($result === static::DENY) {
40	return $result;
41	}
42	elseif (isset($result)) {
43	throw new \UnexpectedValueException('Return value of ResponsePolicyInterface::check() must be one of ResponsePolicyInterface::DENY or NULL');
44	}
45	}
46	}
47
48	/**
49	* {@inheritdoc}
50	*/
51	public function addPolicy(ResponsePolicyInterface $policy) {
52	$this->rules[] = $policy;
53	return $this;
54	}
55
56	}