153 lines
3.9 KiB
PHP
153 lines
3.9 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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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 Symfony\Component\PropertyInfo;
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use Psr\Cache\CacheItemPoolInterface;
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/**
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* Adds a PSR-6 cache layer on top of an extractor.
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*
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* @author Kévin Dunglas <dunglas@gmail.com>
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*/
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class PropertyInfoCacheExtractor implements PropertyInfoExtractorInterface
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{
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/**
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* @var PropertyInfoExtractorInterface
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*/
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private $propertyInfoExtractor;
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/**
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* @var CacheItemPoolInterface
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*/
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private $cacheItemPool;
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/**
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* @var array
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*/
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private $arrayCache = array();
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public function __construct(PropertyInfoExtractorInterface $propertyInfoExtractor, CacheItemPoolInterface $cacheItemPool)
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{
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$this->propertyInfoExtractor = $propertyInfoExtractor;
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$this->cacheItemPool = $cacheItemPool;
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}
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/**
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* {@inheritdoc}
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*/
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public function isReadable($class, $property, array $context = array())
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{
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return $this->extract('isReadable', array($class, $property, $context));
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}
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/**
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* {@inheritdoc}
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*/
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public function isWritable($class, $property, array $context = array())
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{
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return $this->extract('isWritable', array($class, $property, $context));
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}
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/**
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* {@inheritdoc}
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*/
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public function getShortDescription($class, $property, array $context = array())
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{
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return $this->extract('getShortDescription', array($class, $property, $context));
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}
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/**
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* {@inheritdoc}
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*/
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public function getLongDescription($class, $property, array $context = array())
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{
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return $this->extract('getLongDescription', array($class, $property, $context));
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}
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/**
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* {@inheritdoc}
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*/
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public function getProperties($class, array $context = array())
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{
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return $this->extract('getProperties', array($class, $context));
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}
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/**
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* {@inheritdoc}
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*/
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public function getTypes($class, $property, array $context = array())
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{
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return $this->extract('getTypes', array($class, $property, $context));
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}
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/**
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* Retrieves the cached data if applicable or delegates to the decorated extractor.
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*
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* @param string $method
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* @param array $arguments
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*
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* @return mixed
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*/
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private function extract($method, array $arguments)
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{
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try {
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$serializedArguments = serialize($arguments);
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} catch (\Exception $exception) {
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// If arguments are not serializable, skip the cache
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return call_user_func_array(array($this->propertyInfoExtractor, $method), $arguments);
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}
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$key = $this->escape($method.'.'.$serializedArguments);
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if (array_key_exists($key, $this->arrayCache)) {
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return $this->arrayCache[$key];
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}
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$item = $this->cacheItemPool->getItem($key);
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if ($item->isHit()) {
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return $this->arrayCache[$key] = $item->get();
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}
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$value = call_user_func_array(array($this->propertyInfoExtractor, $method), $arguments);
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$item->set($value);
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$this->cacheItemPool->save($item);
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return $this->arrayCache[$key] = $value;
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}
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/**
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* Escapes a key according to PSR-6.
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*
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* Replaces characters forbidden by PSR-6 and the _ char by the _ char followed by the ASCII
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* code of the escaped char.
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*
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* @param string $key
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*
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* @return string
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*/
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private function escape($key)
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{
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return strtr($key, array(
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'{' => '_123',
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'}' => '_125',
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'(' => '_40',
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')' => '_41',
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'/' => '_47',
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'\\' => '_92',
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'@' => '_64',
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':' => '_58',
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'_' => '_95',
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));
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}
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}
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