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DelegatingLoader.php
01 <?php
02
03 /*
04 * This file is part of the Symfony package.
05 *
06 * (c) Fabien Potencier <fabien@symfony.com>
07 *
08 * For the full copyright and license information, please view the LICENSE
09 * 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 * DelegatingLoader delegates loading to other loaders using a loader resolver.
18 *
19 * This loader acts as an array of LoaderInterface objects - each having
20 * a chance to load a given resource (handled by the resolver)
21 *
22 * @author Fabien Potencier <fabien@symfony.com>
23 */
24 class DelegatingLoader extends Loader
25 {
26 /**
27 * Constructor.
28 *
29 * @param LoaderResolverInterface $resolver A LoaderResolverInterface instance
30 */
31 public function __construct(LoaderResolverInterface $resolver)
32 {
33 $this->resolver = $resolver;
34 }
35
36 /**
37 * Loads a resource.
38 *
39 * @param mixed $resource A resource
40 * @param string $type The resource type
41 *
42 * @return mixed
43 *
44 * @throws FileLoaderLoadException if no loader is found.
45 */
46 public function load($resource, $type = null)
47 {
48 if (false === $loader = $this->resolver->resolve($resource, $type)) {
49 throw new FileLoaderLoadException($resource);
50 }
51
52 return $loader->load($resource, $type);
53 }
54
55 /**
56 * {@inheritdoc}
57 */
58 public function supports($resource, $type = null)
59 {
60 return false !== $this->resolver->resolve($resource, $type);
61 }
62 }
63