diff core/lib/Drupal/Component/DependencyInjection/PhpArrayContainer.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Component/DependencyInjection/PhpArrayContainer.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,268 @@
+<?php
+
+namespace Drupal\Component\DependencyInjection;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+use Symfony\Component\DependencyInjection\Exception\RuntimeException;
+
+/**
+ * Provides a container optimized for Drupal's needs.
+ *
+ * This container implementation is compatible with the default Symfony
+ * dependency injection container and similar to the Symfony ContainerBuilder
+ * class, but optimized for speed.
+ *
+ * It is based on a human-readable PHP array container definition with a
+ * structure very similar to the YAML container definition.
+ *
+ * @see \Drupal\Component\DependencyInjection\Container
+ * @see \Drupal\Component\DependencyInjection\Dumper\PhpArrayDumper
+ * @see \Drupal\Component\DependencyInjection\DependencySerializationTrait
+ *
+ * @ingroup container
+ */
+class PhpArrayContainer extends Container {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function __construct(array $container_definition = []) {
+    if (isset($container_definition['machine_format']) && $container_definition['machine_format'] === TRUE) {
+      throw new InvalidArgumentException('The machine-optimized format is not supported by this class. Use a human-readable format instead, e.g. as produced by \Drupal\Component\DependencyInjection\Dumper\PhpArrayDumper.');
+    }
+
+    // Do not call the parent's constructor as it would bail on the
+    // machine-optimized format.
+    $this->aliases = isset($container_definition['aliases']) ? $container_definition['aliases'] : [];
+    $this->parameters = isset($container_definition['parameters']) ? $container_definition['parameters'] : [];
+    $this->serviceDefinitions = isset($container_definition['services']) ? $container_definition['services'] : [];
+    $this->frozen = isset($container_definition['frozen']) ? $container_definition['frozen'] : FALSE;
+
+    // Register the service_container with itself.
+    $this->services['service_container'] = $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function createService(array $definition, $id) {
+    // This method is a verbatim copy of
+    // \Drupal\Component\DependencyInjection\Container::createService
+    // except for the following difference:
+    // - There are no instanceof checks on \stdClass, which are used in the
+    //   parent class to avoid resolving services and parameters when it is
+    //   known from dumping that there is nothing to resolve.
+    if (isset($definition['synthetic']) && $definition['synthetic'] === TRUE) {
+      throw new RuntimeException(sprintf('You have requested a synthetic service ("%s"). The service container does not know how to construct this service. The service will need to be set before it is first used.', $id));
+    }
+
+    $arguments = [];
+    if (isset($definition['arguments'])) {
+      $arguments = $this->resolveServicesAndParameters($definition['arguments']);
+    }
+
+    if (isset($definition['file'])) {
+      $file = $this->frozen ? $definition['file'] : current($this->resolveServicesAndParameters([$definition['file']]));
+      require_once $file;
+    }
+
+    if (isset($definition['factory'])) {
+      $factory = $definition['factory'];
+      if (is_array($factory)) {
+        $factory = $this->resolveServicesAndParameters([$factory[0], $factory[1]]);
+      }
+      elseif (!is_string($factory)) {
+        throw new RuntimeException(sprintf('Cannot create service "%s" because of invalid factory', $id));
+      }
+
+      $service = call_user_func_array($factory, $arguments);
+    }
+    else {
+      $class = $this->frozen ? $definition['class'] : current($this->resolveServicesAndParameters([$definition['class']]));
+      $length = isset($definition['arguments_count']) ? $definition['arguments_count'] : count($arguments);
+
+      // Optimize class instantiation for services with up to 10 parameters as
+      // reflection is noticeably slow.
+      switch ($length) {
+        case 0:
+          $service = new $class();
+          break;
+
+        case 1:
+          $service = new $class($arguments[0]);
+          break;
+
+        case 2:
+          $service = new $class($arguments[0], $arguments[1]);
+          break;
+
+        case 3:
+          $service = new $class($arguments[0], $arguments[1], $arguments[2]);
+          break;
+
+        case 4:
+          $service = new $class($arguments[0], $arguments[1], $arguments[2], $arguments[3]);
+          break;
+
+        case 5:
+          $service = new $class($arguments[0], $arguments[1], $arguments[2], $arguments[3], $arguments[4]);
+          break;
+
+        case 6:
+          $service = new $class($arguments[0], $arguments[1], $arguments[2], $arguments[3], $arguments[4], $arguments[5]);
+          break;
+
+        case 7:
+          $service = new $class($arguments[0], $arguments[1], $arguments[2], $arguments[3], $arguments[4], $arguments[5], $arguments[6]);
+          break;
+
+        case 8:
+          $service = new $class($arguments[0], $arguments[1], $arguments[2], $arguments[3], $arguments[4], $arguments[5], $arguments[6], $arguments[7]);
+          break;
+
+        case 9:
+          $service = new $class($arguments[0], $arguments[1], $arguments[2], $arguments[3], $arguments[4], $arguments[5], $arguments[6], $arguments[7], $arguments[8]);
+          break;
+
+        case 10:
+          $service = new $class($arguments[0], $arguments[1], $arguments[2], $arguments[3], $arguments[4], $arguments[5], $arguments[6], $arguments[7], $arguments[8], $arguments[9]);
+          break;
+
+        default:
+          $r = new \ReflectionClass($class);
+          $service = $r->newInstanceArgs($arguments);
+          break;
+      }
+    }
+
+    if (!isset($definition['shared']) || $definition['shared'] !== FALSE) {
+      $this->services[$id] = $service;
+    }
+
+    if (isset($definition['calls'])) {
+      foreach ($definition['calls'] as $call) {
+        $method = $call[0];
+        $arguments = [];
+        if (!empty($call[1])) {
+          $arguments = $call[1];
+          $arguments = $this->resolveServicesAndParameters($arguments);
+        }
+        call_user_func_array([$service, $method], $arguments);
+      }
+    }
+
+    if (isset($definition['properties'])) {
+      $definition['properties'] = $this->resolveServicesAndParameters($definition['properties']);
+      foreach ($definition['properties'] as $key => $value) {
+        $service->{$key} = $value;
+      }
+    }
+
+    if (isset($definition['configurator'])) {
+      $callable = $definition['configurator'];
+      if (is_array($callable)) {
+        $callable = $this->resolveServicesAndParameters($callable);
+      }
+
+      if (!is_callable($callable)) {
+        throw new InvalidArgumentException(sprintf('The configurator for class "%s" is not a callable.', get_class($service)));
+      }
+
+      call_user_func($callable, $service);
+    }
+
+    return $service;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function resolveServicesAndParameters($arguments) {
+    // This method is different from the parent method only for the following
+    // cases:
+    // - A service is denoted by '@service' and not by a \stdClass object.
+    // - A parameter is denoted by '%parameter%' and not by a \stdClass object.
+    // - The depth of the tree representing the arguments is not known in
+    //   advance, so it needs to be fully traversed recursively.
+    foreach ($arguments as $key => $argument) {
+      if ($argument instanceof \stdClass) {
+        $type = $argument->type;
+
+        // Private services are a special flavor: In case a private service is
+        // only used by one other service, the ContainerBuilder uses a
+        // Definition object as an argument, which does not have an ID set.
+        // Therefore the format uses a \stdClass object to store the definition
+        // and to be able to create the service on the fly.
+        //
+        // Note: When constructing a private service by hand, 'id' must be set.
+        //
+        // The PhpArrayDumper just uses the hash of the private service
+        // definition to generate a unique ID.
+        //
+        // @see \Drupal\Component\DependecyInjection\Dumper\OptimizedPhpArrayDumper::getPrivateServiceCall
+        if ($type == 'private_service') {
+          $id = $argument->id;
+
+          // Check if the private service already exists - in case it is shared.
+          if (!empty($argument->shared) && isset($this->privateServices[$id])) {
+            $arguments[$key] = $this->privateServices[$id];
+            continue;
+          }
+
+          // Create a private service from a service definition.
+          $arguments[$key] = $this->createService($argument->value, $id);
+          if (!empty($argument->shared)) {
+            $this->privateServices[$id] = $arguments[$key];
+          }
+
+          continue;
+        }
+
+        if ($type !== NULL) {
+          throw new InvalidArgumentException("Undefined type '$type' while resolving parameters and services.");
+        }
+      }
+
+      if (is_array($argument)) {
+        $arguments[$key] = $this->resolveServicesAndParameters($argument);
+        continue;
+      }
+
+      if (!is_string($argument)) {
+        continue;
+      }
+
+      // Resolve parameters.
+      if ($argument[0] === '%') {
+        $name = substr($argument, 1, -1);
+        if (!isset($this->parameters[$name])) {
+          $arguments[$key] = $this->getParameter($name);
+          // This can never be reached as getParameter() throws an Exception,
+          // because we already checked that the parameter is not set above.
+        }
+        $argument = $this->parameters[$name];
+        $arguments[$key] = $argument;
+      }
+
+      // Resolve services.
+      if ($argument[0] === '@') {
+        $id = substr($argument, 1);
+        $invalid_behavior = ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE;
+        if ($id[0] === '?') {
+          $id = substr($id, 1);
+          $invalid_behavior = ContainerInterface::NULL_ON_INVALID_REFERENCE;
+        }
+        if (isset($this->services[$id])) {
+          $arguments[$key] = $this->services[$id];
+        }
+        else {
+          $arguments[$key] = $this->get($id, $invalid_behavior);
+        }
+      }
+    }
+
+    return $arguments;
+  }
+
+}