Subversion Repositories php-qbpwcf

<?php

/*

 * This file is part of the Symfony package.

 *

 * (c) Fabien Potencier <fabien@symfony.com>

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

namespace Symfony\Component\Routing\Loader;

use Symfony\Component\Config\FileLocatorInterface;

use Symfony\Component\Config\Loader\FileLoader;

use Symfony\Component\Config\Resource\FileResource;

use Symfony\Component\Routing\RouteCollection;

/**

 * AnnotationFileLoader loads routing information from annotations set

 * on a PHP class and its methods.

 *

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

 */

class AnnotationFileLoader extends FileLoader

{

    protected $loader;

    /**

     * @throws \RuntimeException

     */

    public function __construct(FileLocatorInterface $locator, AnnotationClassLoader $loader)

    {

        if (!\function_exists('token_get_all')) {

            throw new \LogicException('The Tokenizer extension is required for the routing annotation loaders.');

        }

        parent::__construct($locator);

        $this->loader = $loader;

    }

    /**

     * Loads from annotations from a file.

     *

     * @param string      $file A PHP file path

     * @param string|null $type The resource type

     *

     * @return RouteCollection|null A RouteCollection instance

     *

     * @throws \InvalidArgumentException When the file does not exist or its routes cannot be parsed

     */

    public function load($file, string $type = null)

    {

        $path = $this->locator->locate($file);

        $collection = new RouteCollection();

        if ($class = $this->findClass($path)) {

            $refl = new \ReflectionClass($class);

            if ($refl->isAbstract()) {

                return null;

            }

            $collection->addResource(new FileResource($path));

            $collection->addCollection($this->loader->load($class, $type));

        }

        gc_mem_caches();

        return $collection;

    }

    /**

     * {@inheritdoc}

     */

    public function supports($resource, string $type = null)

    {

        return \is_string($resource) && 'php' === pathinfo($resource, \PATHINFO_EXTENSION) && (!$type || 'annotation' === $type);

    }

    /**

     * Returns the full class name for the first class in the file.

     *

     * @return string|false Full class name if found, false otherwise

     */

    protected function findClass(string $file)

    {

        $class = false;

        $namespace = false;

        $tokens = token_get_all(file_get_contents($file));

        if (1 === \count($tokens) && \T_INLINE_HTML === $tokens[0][0]) {

            throw new \InvalidArgumentException(sprintf('The file "%s" does not contain PHP code. Did you forgot to add the "<?php" start tag at the beginning of the file?', $file));

        }

        $nsTokens = [\T_NS_SEPARATOR => true, \T_STRING => true];

        if (\defined('T_NAME_QUALIFIED')) {

            $nsTokens[T_NAME_QUALIFIED] = true;

        }

        for ($i = 0; isset($tokens[$i]); ++$i) {

            $token = $tokens[$i];

            if (!isset($token[1])) {

                continue;

            }

            if (true === $class && \T_STRING === $token[0]) {

                return $namespace.'\\'.$token[1];

            }

            if (true === $namespace && isset($nsTokens[$token[0]])) {

                $namespace = $token[1];

                while (isset($tokens[++$i][1], $nsTokens[$tokens[$i][0]])) {

                    $namespace .= $tokens[$i][1];

                }

                $token = $tokens[$i];

            }

            if (\T_CLASS === $token[0]) {

                // Skip usage of ::class constant and anonymous classes

                $skipClassToken = false;

                for ($j = $i - 1; $j > 0; --$j) {

                    if (!isset($tokens[$j][1])) {

                        break;

                    }

                    if (\T_DOUBLE_COLON === $tokens[$j][0] || \T_NEW === $tokens[$j][0]) {

                        $skipClassToken = true;

                        break;

                    } elseif (!\in_array($tokens[$j][0], [\T_WHITESPACE, \T_DOC_COMMENT, \T_COMMENT])) {

                        break;

                    }

                }

                if (!$skipClassToken) {

                    $class = true;

                }

            }

            if (\T_NAMESPACE === $token[0]) {

                $namespace = true;

            }

        }

        return false;

    }

}