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 

    12 namespace Symfony\Component\Config\Loader;

    13 

    14 use Symfony\Component\Config\Exception\FileLoaderLoadException;

    15 

    16 /**

    17  * Loader is the abstract class used by all built-in loaders.

    18  *

    19  * @author Fabien Potencier <fabien@symfony.com>

    20  */

    21 abstract class Loader implements LoaderInterface

    22 {

    23     protected $resolver;

    24 

    25     /**

    26      * Gets the loader resolver.

    27      *

    28      * @return LoaderResolver A LoaderResolver instance

    29      */

    30     public function getResolver()

    31     {

    32         return $this->resolver;

    33     }

    34 

    35     /**

    36      * Sets the loader resolver.

    37      *

    38      * @param LoaderResolver $resolver A LoaderResolver instance

    39      */

    40     public function setResolver(LoaderResolver $resolver)

    41     {

    42         $this->resolver = $resolver;

    43     }

    44 

    45     /**

    46      * Imports a resource.

    47      *

    48      * @param mixed  $resource A Resource

    49      * @param string $type     The resource type

    50      */

    51     public function import($resource, $type = null)

    52     {

    53         $this->resolve($resource)->load($resource, $type);

    54     }

    55 

    56     /**

    57      * Finds a loader able to load an imported resource.

    58      *

    59      * @param mixed  $resource A Resource

    60      * @param string $type     The resource type

    61      *

    62      * @return LoaderInterface A LoaderInterface instance

    63      *

    64      * @throws FileLoaderLoadException if no loader is found

    65      */

    66     public function resolve($resource, $type = null)

    67     {

    68         if ($this->supports($resource, $type)) {

    69             return $this;

    70         }

    71 

    72         $loader = null === $this->resolver ? false : $this->resolver->resolve($resource, $type);

    73 

    74         if (false === $loader) {

    75             throw new FileLoaderLoadException($resource);

    76         }

    77 

    78         return $loader;

    79     }

    80 }