4 * This file is part of the Symfony package.
6 * (c) Fabien Potencier <fabien@symfony.com>
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
12 namespace Symfony\Component\ClassLoader;
15 * WinCacheClassLoader implements a wrapping autoloader cached in WinCache.
17 * It expects an object implementing a findFile method to find the file. This
18 * allow using it as a wrapper around the other loaders of the component (the
19 * ClassLoader for instance) but also around any other autoloaders following
20 * this convention (the Composer one for instance).
22 * // with a Symfony autoloader
23 * $loader = new ClassLoader();
24 * $loader->addPrefix('Symfony\Component', __DIR__.'/component');
25 * $loader->addPrefix('Symfony', __DIR__.'/framework');
27 * // or with a Composer autoloader
28 * use Composer\Autoload\ClassLoader;
30 * $loader = new ClassLoader();
31 * $loader->add('Symfony\Component', __DIR__.'/component');
32 * $loader->add('Symfony', __DIR__.'/framework');
34 * $cachedLoader = new WinCacheClassLoader('my_prefix', $loader);
36 * // activate the cached autoloader
37 * $cachedLoader->register();
39 * // eventually deactivate the non-cached loader if it was registered previously
40 * // to be sure to use the cached one.
41 * $loader->unregister();
43 * @author Fabien Potencier <fabien@symfony.com>
44 * @author Kris Wallsmith <kris@symfony.com>
45 * @author Artem Ryzhkov <artem@smart-core.org>
47 class WinCacheClassLoader
52 * A class loader object that implements the findFile() method.
61 * @param string $prefix The WinCache namespace prefix to use
62 * @param object $decorated A class loader object that implements the findFile() method
64 * @throws \RuntimeException
65 * @throws \InvalidArgumentException
67 public function __construct($prefix, $decorated)
69 if (!extension_loaded('wincache')) {
70 throw new \RuntimeException('Unable to use WinCacheClassLoader as WinCache is not enabled.');
73 if (!method_exists($decorated, 'findFile')) {
74 throw new \InvalidArgumentException('The class finder must implement a "findFile" method.');
77 $this->prefix = $prefix;
78 $this->decorated = $decorated;
82 * Registers this instance as an autoloader.
84 * @param bool $prepend Whether to prepend the autoloader or not
86 public function register($prepend = false)
88 spl_autoload_register(array($this, 'loadClass'), true, $prepend);
92 * Unregisters this instance as an autoloader.
94 public function unregister()
96 spl_autoload_unregister(array($this, 'loadClass'));
100 * Loads the given class or interface.
102 * @param string $class The name of the class
104 * @return bool|null True, if loaded
106 public function loadClass($class)
108 if ($file = $this->findFile($class)) {
116 * Finds a file by class name while caching lookups to WinCache.
118 * @param string $class A class name to resolve to file
120 * @return string|null
122 public function findFile($class)
124 $file = wincache_ucache_get($this->prefix.$class, $success);
127 wincache_ucache_set($this->prefix.$class, $file = $this->decorated->findFile($class) ?: null, 0);
134 * Passes through all unknown calls onto the decorated object.
136 public function __call($method, $args)
138 return call_user_func_array(array($this->decorated, $method), $args);