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<?php
 /*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
 
 namespace Symfony\Component\HttpKernel;
 
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\HttpKernel\Bundle\BundleInterface;
 use Symfony\Component\Config\Loader\LoaderInterface;
 
 /**
 * The Kernel is the heart of the Symfony system.
 *
 * It manages an environment made of bundles.
 *
 * @author Fabien Potencier <[email protected]>
 */
 interface KernelInterface extends HttpKernelInterface, \Serializable
 {
 /**
 * Returns an array of bundles to register.
 *
 * @return BundleInterface[] An array of bundle instances
 */
 public function registerBundles();
 
 /**
 * Loads the container configuration.
 *
 * @param LoaderInterface $loader A LoaderInterface instance
 */
 public function registerContainerConfiguration(LoaderInterface $loader);
 
 /**
 * Boots the current kernel.
 */
 public function boot();
 
 /**
 * Shutdowns the kernel.
 *
 * This method is mainly useful when doing functional testing.
 */
 public function shutdown();
 
 /**
 * Gets the registered bundle instances.
 *
 * @return BundleInterface[] An array of registered bundle instances
 */
 public function getBundles();
 
 /**
 * Returns a bundle and optionally its descendants by its name.
 *
 * @param string $name  Bundle name
 * @param bool   $first Whether to return the first bundle only or together with its descendants
 *
 * @return BundleInterface|BundleInterface[] A BundleInterface instance or an array of BundleInterface instances if $first is false
 *
 * @throws \InvalidArgumentException when the bundle is not enabled
 */
 public function getBundle($name, $first = true);
 
 /**
 * Returns the file path for a given resource.
 *
 * A Resource can be a file or a directory.
 *
 * The resource name must follow the following pattern:
 *
 *     "@BundleName/path/to/a/file.something"
 *
 * where BundleName is the name of the bundle
 * and the remaining part is the relative path in the bundle.
 *
 * If $dir is passed, and the first segment of the path is "Resources",
 * this method will look for a file named:
 *
 *     $dir/<BundleName>/path/without/Resources
 *
 * before looking in the bundle resource folder.
 *
 * @param string $name  A resource name to locate
 * @param string $dir   A directory where to look for the resource first
 * @param bool   $first Whether to return the first path or paths for all matching bundles
 *
 * @return string|array The absolute path of the resource or an array if $first is false
 *
 * @throws \InvalidArgumentException if the file cannot be found or the name is not valid
 * @throws \RuntimeException         if the name contains invalid/unsafe characters
 */
 public function locateResource($name, $dir = null, $first = true);
 
 /**
 * Gets the name of the kernel.
 *
 * @return string The kernel name
 */
 public function getName();
 
 /**
 * Gets the environment.
 *
 * @return string The current environment
 */
 public function getEnvironment();
 
 /**
 * Checks if debug mode is enabled.
 *
 * @return bool true if debug mode is enabled, false otherwise
 */
 public function isDebug();
 
 /**
 * Gets the application root dir (path of the project's Kernel class).
 *
 * @return string The Kernel root dir
 */
 public function getRootDir();
 
 /**
 * Gets the current container.
 *
 * @return ContainerInterface A ContainerInterface instance
 */
 public function getContainer();
 
 /**
 * Gets the request start time (not available if debug is disabled).
 *
 * @return int The request start timestamp
 */
 public function getStartTime();
 
 /**
 * Gets the cache directory.
 *
 * @return string The cache directory
 */
 public function getCacheDir();
 
 /**
 * Gets the log directory.
 *
 * @return string The log directory
 */
 public function getLogDir();
 
 /**
 * Gets the charset of the application.
 *
 * @return string The charset
 */
 public function getCharset();
 }
 
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