146 lines
4.3 KiB
PHP
146 lines
4.3 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Routing\Loader;
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use Symfony\Component\Config\FileLocatorInterface;
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use Symfony\Component\Config\Loader\FileLoader;
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use Symfony\Component\Config\Resource\FileResource;
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use Symfony\Component\Routing\RouteCollection;
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/**
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* AnnotationFileLoader loads routing information from annotations set
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* on a PHP class and its methods.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class AnnotationFileLoader extends FileLoader
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{
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protected $loader;
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/**
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* @throws \RuntimeException
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*/
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public function __construct(FileLocatorInterface $locator, AnnotationClassLoader $loader)
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{
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if (!\function_exists('token_get_all')) {
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throw new \LogicException('The Tokenizer extension is required for the routing annotation loaders.');
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}
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parent::__construct($locator);
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$this->loader = $loader;
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}
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/**
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* Loads from annotations from a file.
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*
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* @param string $file A PHP file path
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* @param string|null $type The resource type
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*
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* @return RouteCollection|null A RouteCollection instance
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*
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* @throws \InvalidArgumentException When the file does not exist or its routes cannot be parsed
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*/
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public function load($file, $type = null)
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{
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$path = $this->locator->locate($file);
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$collection = new RouteCollection();
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if ($class = $this->findClass($path)) {
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$refl = new \ReflectionClass($class);
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if ($refl->isAbstract()) {
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return null;
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}
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$collection->addResource(new FileResource($path));
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$collection->addCollection($this->loader->load($class, $type));
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}
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gc_mem_caches();
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return $collection;
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}
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/**
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* {@inheritdoc}
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*/
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public function supports($resource, $type = null)
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{
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return \is_string($resource) && 'php' === pathinfo($resource, PATHINFO_EXTENSION) && (!$type || 'annotation' === $type);
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}
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/**
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* Returns the full class name for the first class in the file.
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*
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* @param string $file A PHP file path
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*
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* @return string|false Full class name if found, false otherwise
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*/
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protected function findClass($file)
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{
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$class = false;
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$namespace = false;
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$tokens = token_get_all(file_get_contents($file));
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if (1 === \count($tokens) && T_INLINE_HTML === $tokens[0][0]) {
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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?', $file));
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}
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for ($i = 0; isset($tokens[$i]); ++$i) {
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$token = $tokens[$i];
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if (!isset($token[1])) {
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continue;
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}
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if (true === $class && T_STRING === $token[0]) {
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return $namespace.'\\'.$token[1];
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}
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if (true === $namespace && T_STRING === $token[0]) {
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$namespace = $token[1];
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while (isset($tokens[++$i][1]) && \in_array($tokens[$i][0], [T_NS_SEPARATOR, T_STRING])) {
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$namespace .= $tokens[$i][1];
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}
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$token = $tokens[$i];
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}
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if (T_CLASS === $token[0]) {
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// Skip usage of ::class constant and anonymous classes
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$skipClassToken = false;
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for ($j = $i - 1; $j > 0; --$j) {
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if (!isset($tokens[$j][1])) {
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break;
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}
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if (T_DOUBLE_COLON === $tokens[$j][0] || T_NEW === $tokens[$j][0]) {
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$skipClassToken = true;
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break;
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} elseif (!\in_array($tokens[$j][0], [T_WHITESPACE, T_DOC_COMMENT, T_COMMENT])) {
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break;
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}
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}
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if (!$skipClassToken) {
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$class = true;
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}
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}
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if (T_NAMESPACE === $token[0]) {
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$namespace = true;
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}
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}
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return false;
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}
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}
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