/** * Merges a ContainerBuilder with the current ContainerBuilder configuration. * * Service definitions overrides the current defined ones. * * But for parameters, they are overridden by the current ones. It allows * the parameters passed to the container constructor to have precedence * over the loaded ones. * * $container = new ContainerBuilder(array('foo' => 'bar')); * $loader = new LoaderXXX($container); * $loader->load('resource_name'); * $container->register('foo', new stdClass()); * * In the above example, even if the loaded resource defines a foo * parameter, the value will still be 'bar' as defined in the ContainerBuilder * constructor. */ public function merge(ContainerBuilder $container) { if (true === $this->isFrozen()) { throw new \LogicException('Cannot merge on a frozen container.'); } $this->addDefinitions($container->getDefinitions()); $this->addAliases($container->getAliases()); $this->parameterBag->add($container->getParameterBag()->all()); foreach ($container->getResources() as $resource) { $this->addResource($resource); } foreach ($container->getExtensionContainers() as $name => $container) { if (isset($this->extensionContainers[$name])) { $this->extensionContainers[$name]->merge($container); } else { $this->extensionContainers[$name] = $container; } } }