protected Container::createService(array $definition, $id)
Creates a service from a service definition.
Parameters
array $definition: The service definition to create a service from.
string $id: The service identifier, necessary so it can be shared if its public.
Return value
object The service described by the service definition.
Throws
\Symfony\Component\DependencyInjection\Exception\RuntimeException Thrown when the service is a synthetic service.
\Symfony\Component\DependencyInjection\Exception\InvalidArgumentException Thrown when the configurator callable in $definition['configurator'] is not actually a callable.
\ReflectionException Thrown when the service class takes more than 10 parameters to construct, and cannot be instantiated.
File
- core/lib/Drupal/Component/DependencyInjection/Container.php, line 226
Class
- Container
- Provides a container optimized for Drupal's needs.
Namespace
Drupal\Component\DependencyInjection
Code
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 | protected function createService(array $definition, $id) { if (isset($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)); } $arguments = array(); if (isset($definition['arguments'])) { $arguments = $definition['arguments']; if ($arguments instanceof \stdClass) { $arguments = $this->resolveServicesAndParameters($arguments); } } if (isset($definition['file'])) { $file = $this->frozen ? $definition['file'] : current($this->resolveServicesAndParameters(array($definition['file']))); require_once $file; } if (isset($definition['factory'])) { $factory = $definition['factory']; if (is_array($factory)) { $factory = $this->resolveServicesAndParameters(array($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(array($definition['class']))); $length = isset($definition['arguments_count']) ? $definition['arguments_count'] : count($arguments); // Optimize class instantiation for services with up to 10 parameters as // ReflectionClass 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; } } // Share the service if it is public. if (!isset($definition['public']) || $definition['public'] !== FALSE) { // Forward compatibility fix for Symfony 2.8 update. if (!isset($definition['shared']) || $definition['shared'] !== FALSE) { $this->services[$id] = $service; } } if (isset($definition['calls'])) { foreach ($definition['calls'] as $call) { $method = $call[0]; $arguments = array(); if (!empty($call[1])) { $arguments = $call[1]; if ($arguments instanceof \stdClass) { $arguments = $this->resolveServicesAndParameters($arguments); } } call_user_func_array(array($service, $method), $arguments); } } if (isset($definition['properties'])) { if ($definition['properties'] instanceof \stdClass) { $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;} |
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