/**
* @param string $id
* @return mixed
* @throws CircularDependencyException
*/
private function createService($id)
{
if (isset($this->servicesCreating[$id])) {
$msg = 'Circular dependency: ' . implode(' => ', array_keys($this->servicesCreating)) . " => {$id}";
throw new CircularDependencyException($msg);
}
$this->servicesCreating[$id] = true;
$service = $this->factory->create($id, $this);
unset($this->servicesCreating[$id]);
$this->repository->add($id, $service);
return $service;
}
/**
* Gets the instance via lazy initialization (created on first usage)
*
* @param $id
*
* @throws CircularDependencyException
*
* @return a registered service
*/
public function get($id)
{
$service = $this->repository->get($id);
if (is_null($service)) {
if (isset($this->servicesCreating[$id])) {
$msg = 'Circular dependency detected: ' . implode(' => ', array_keys($this->servicesCreating)) . " => {$id}";
throw new CircularDependencyException($msg);
}
// remmember ids called
$this->servicesCreating[$id] = true;
// pass the container to force only one instantiation per class
$service = $this->factory->create($id, $this);
unset($this->servicesCreating[$id]);
$this->repository->add($id, $service);
}
return $service;
}