/**
* Instantiates an object
*
* @param string $class
* @param array $arguments
*
* @return object
*/
private function instantiateClass($class, $arguments = array())
{
// Checks if the class exists.
if (!class_exists($class)) {
throw LogicException::classNotFoundException($class);
}
// Get class reflection.
$reflection = new \ReflectionClass($class);
// Checks if the class is instantiable.
if (!$reflection->isInstantiable()) {
throw LogicException::classNotInstantiableException($class);
}
// Checks if the constructor exists and takes the right number of parameters.
if ($reflection->hasMethod('__construct')) {
$method = $reflection->getMethod('__construct');
if ($method->getNumberOfRequiredParameters() > count($arguments)) {
throw LogicException::invalidNumberOfParametersException($class, '__construct()', $method->getNumberOfRequiredParameters());
}
}
// Instantiate class and return the object.
return $reflection->newInstanceArgs($arguments);
}
/**
* Executes a command (must be overridden)
*
* @param InputInterface $input
* @param OutputInterface $output
*/
protected function executeCommand(InputInterface $input, OutputInterface $output)
{
throw LogicException::mustOverrideMethodException(__METHOD__, get_class($this));
}
