Skip to content
  • P
    Projects
  • G
    Groups
  • S
    Snippets
  • Help

semour / semour_web

  • This project
    • Loading...
  • Sign in
Go to a project
  • Project
  • Repository
  • Issues 0
  • Merge Requests 0
  • Pipelines
  • Wiki
  • Snippets
  • Settings
  • Activity
  • Graph
  • Charts
  • Create a new issue
  • Jobs
  • Commits
  • Issue Boards
  • Files
  • Commits
  • Branches
  • Tags
  • Contributors
  • Graph
  • Compare
  • Charts
Find file
Normal viewHistoryPermalink
Switch branch/tag
  • semour_web
  • vendor
  • symfony
  • routing
  • Loader
  • AnnotationFileLoader.php
AnnotationFileLoader.php 4.44 KB
mushishixian's avatar
扩展包
889d39c3
 
mushishixian committed 2 years ago
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146
<?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;

    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 $type The resource type
     *
     * @return RouteCollection|null
     *
     * @throws \InvalidArgumentException When the file does not exist or its routes cannot be parsed
     */
    public function load($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
     */
    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])) {
                        if ('(' === $tokens[$j] || ',' === $tokens[$j]) {
                            $skipClassToken = true;
                        }
                        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;
    }
}