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<?php
namespace Stripe\Service;
/**
* Abstract base class for all service factories used to expose service
* instances through {@link \Stripe\StripeClient}.
*
* Service factories serve two purposes:
*
* 1. Expose properties for all services through the `__get()` magic method.
* 2. Lazily initialize each service instance the first time the property for
* a given service is used.
*/
abstract class AbstractServiceFactory
{
/** @var \Stripe\StripeClientInterface */
private $client;
/** @var array<string, AbstractService|AbstractServiceFactory> */
private $services;
/**
* @param \Stripe\StripeClientInterface $client
*/
public function __construct($client)
{
$this->client = $client;
$this->services = [];
}
/**
* @param string $name
*
* @return null|string
*/
abstract protected function getServiceClass($name);
/**
* @param string $name
*
* @return null|AbstractService|AbstractServiceFactory
*/
public function __get($name)
{
$serviceClass = $this->getServiceClass($name);
if (null !== $serviceClass) {
if (!\array_key_exists($name, $this->services)) {
$this->services[$name] = new $serviceClass($this->client);
}
return $this->services[$name];
}
\trigger_error('Undefined property: ' . static::class . '::$' . $name);
return null;
}
}
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