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DelegatingLoader.php
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DelegatingLoader.php
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Config\Loader;
/**
* DelegatingLoader delegates loading to other loaders using a loader resolver.
*
* This loader acts as an array of LoaderInterface objects - each having
* a chance to load a given resource (handled by the resolver)
*
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
*/
class DelegatingLoader extends Loader
{
/**
* Constructor.
*
* @param LoaderResolverInterface $resolver A LoaderResolverInterface instance
*/
public function __construct(LoaderResolverInterface $resolver)
{
$this->resolver = $resolver;
}
/**
* Loads a resource.
*
* @param mixed $resource A resource
* @param string $type The resource type
*
* @throws \InvalidArgumentException if no loader is found.
*/
public function load($resource, $type = null)
{
$loader = $this->resolver->resolve($resource, $type);
if (false === $loader) {
throw new \InvalidArgumentException(sprintf('Unable to load the "%s" resource.', is_string($resource) ? $resource : (is_object($resource) ? get_class($resource) : 'RESOURCE')));
}
return $loader->load($resource, $type);
}
/**
* Returns true if this class supports the given resource.
*
* @param mixed $resource A resource
* @param string $type The resource type
*
* @return Boolean true if this class supports the given resource, false otherwise
*/
public function supports($resource, $type = null)
{
return false === $this->resolver->resolve($resource, $type) ? false : true;
}
}