comparison vendor/symfony/dependency-injection/Loader/FileLoader.php @ 14:1fec387a4317

Update Drupal core to 8.5.2 via Composer

  * file that was distributed with this source code.
  */
 
 namespace Symfony\Component\DependencyInjection\Loader;
 
+use Symfony\Component\DependencyInjection\ChildDefinition;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
 use Symfony\Component\Config\Loader\FileLoader as BaseFileLoader;
 use Symfony\Component\Config\FileLocatorInterface;
+use Symfony\Component\Config\Resource\GlobResource;
 
 /**
  * FileLoader is the abstract class used by all built-in loaders that are file based.
  *
  * @author Fabien Potencier <[e-mail]>
  */
 abstract class FileLoader extends BaseFileLoader
 {
     protected $container;
+    protected $isLoadingInstanceof = false;
+    protected $instanceof = array();
 
-    /**
-     * @param ContainerBuilder     $container A ContainerBuilder instance
-     * @param FileLocatorInterface $locator   A FileLocator instance
-     */
     public function __construct(ContainerBuilder $container, FileLocatorInterface $locator)
     {
         $this->container = $container;
 
         parent::__construct($locator);
     }
+
+    /**
+     * Registers a set of classes as services using PSR-4 for discovery.
+     *
+     * @param Definition $prototype A definition to use as template
+     * @param string     $namespace The namespace prefix of classes in the scanned directory
+     * @param string     $resource  The directory to look for classes, glob-patterns allowed
+     * @param string     $exclude   A globed path of files to exclude
+     */
+    public function registerClasses(Definition $prototype, $namespace, $resource, $exclude = null)
+    {
+        if ('\\' !== substr($namespace, -1)) {
+            throw new InvalidArgumentException(sprintf('Namespace prefix must end with a "\\": %s.', $namespace));
+        }
+        if (!preg_match('/^(?:[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+\\\\)++$/', $namespace)) {
+            throw new InvalidArgumentException(sprintf('Namespace is not a valid PSR-4 prefix: %s.', $namespace));
+        }
+
+        $classes = $this->findClasses($namespace, $resource, $exclude);
+        // prepare for deep cloning
+        $serializedPrototype = serialize($prototype);
+        $interfaces = array();
+        $singlyImplemented = array();
+
+        foreach ($classes as $class => $errorMessage) {
+            if (interface_exists($class, false)) {
+                $interfaces[] = $class;
+            } else {
+                $this->setDefinition($class, $definition = unserialize($serializedPrototype));
+                if (null !== $errorMessage) {
+                    $definition->addError($errorMessage);
+
+                    continue;
+                }
+                foreach (class_implements($class, false) as $interface) {
+                    $singlyImplemented[$interface] = isset($singlyImplemented[$interface]) ? false : $class;
+                }
+            }
+        }
+        foreach ($interfaces as $interface) {
+            if (!empty($singlyImplemented[$interface])) {
+                $this->container->setAlias($interface, $singlyImplemented[$interface])
+                    ->setPublic(false);
+            }
+        }
+    }
+
+    /**
+     * Registers a definition in the container with its instanceof-conditionals.
+     *
+     * @param string     $id
+     * @param Definition $definition
+     */
+    protected function setDefinition($id, Definition $definition)
+    {
+        if ($this->isLoadingInstanceof) {
+            if (!$definition instanceof ChildDefinition) {
+                throw new InvalidArgumentException(sprintf('Invalid type definition "%s": ChildDefinition expected, "%s" given.', $id, get_class($definition)));
+            }
+            $this->instanceof[$id] = $definition;
+        } else {
+            $this->container->setDefinition($id, $definition instanceof ChildDefinition ? $definition : $definition->setInstanceofConditionals($this->instanceof));
+        }
+    }
+
+    private function findClasses($namespace, $pattern, $excludePattern)
+    {
+        $parameterBag = $this->container->getParameterBag();
+
+        $excludePaths = array();
+        $excludePrefix = null;
+        if ($excludePattern) {
+            $excludePattern = $parameterBag->unescapeValue($parameterBag->resolveValue($excludePattern));
+            foreach ($this->glob($excludePattern, true, $resource) as $path => $info) {
+                if (null === $excludePrefix) {
+                    $excludePrefix = $resource->getPrefix();
+                }
+
+                // normalize Windows slashes
+                $excludePaths[str_replace('\\', '/', $path)] = true;
+            }
+        }
+
+        $pattern = $parameterBag->unescapeValue($parameterBag->resolveValue($pattern));
+        $classes = array();
+        $extRegexp = defined('HHVM_VERSION') ? '/\\.(?:php|hh)$/' : '/\\.php$/';
+        $prefixLen = null;
+        foreach ($this->glob($pattern, true, $resource) as $path => $info) {
+            if (null === $prefixLen) {
+                $prefixLen = strlen($resource->getPrefix());
+
+                if ($excludePrefix && 0 !== strpos($excludePrefix, $resource->getPrefix())) {
+                    throw new InvalidArgumentException(sprintf('Invalid "exclude" pattern when importing classes for "%s": make sure your "exclude" pattern (%s) is a subset of the "resource" pattern (%s)', $namespace, $excludePattern, $pattern));
+                }
+            }
+
+            if (isset($excludePaths[str_replace('\\', '/', $path)])) {
+                continue;
+            }
+
+            if (!preg_match($extRegexp, $path, $m) || !$info->isReadable()) {
+                continue;
+            }
+            $class = $namespace.ltrim(str_replace('/', '\\', substr($path, $prefixLen, -strlen($m[0]))), '\\');
+
+            if (!preg_match('/^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+(?:\\\\[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+)*+$/', $class)) {
+                continue;
+            }
+
+            try {
+                $r = $this->container->getReflectionClass($class);
+            } catch (\ReflectionException $e) {
+                $classes[$class] = sprintf(
+                    'While discovering services from namespace "%s", an error was thrown when processing the class "%s": "%s".',
+                    $namespace,
+                    $class,
+                    $e->getMessage()
+                );
+                continue;
+            }
+            // check to make sure the expected class exists
+            if (!$r) {
+                throw new InvalidArgumentException(sprintf('Expected to find class "%s" in file "%s" while importing services from resource "%s", but it was not found! Check the namespace prefix used with the resource.', $class, $path, $pattern));
+            }
+
+            if ($r->isInstantiable() || $r->isInterface()) {
+                $classes[$class] = null;
+            }
+        }
+
+        // track only for new & removed files
+        if ($resource instanceof GlobResource) {
+            $this->container->addResource($resource);
+        } else {
+            foreach ($resource as $path) {
+                $this->container->fileExists($path, false);
+            }
+        }
+
+        return $classes;
+    }
 }