aleph1.co.uk Git - yaffs-website/blob - vendor/league/container/src/ServiceProvider/ServiceProviderAggregate.php

   1 <?php
   2
   3 namespace League\Container\ServiceProvider;
   4
   5 use League\Container\ContainerAwareInterface;
   6 use League\Container\ContainerAwareTrait;
   7
   8 class ServiceProviderAggregate implements ServiceProviderAggregateInterface
   9 {
  10     use ContainerAwareTrait;
  11
  12     /**
  13      * @var array
  14      */
  15     protected $providers = [];
  16
  17     /**
  18      * @var array
  19      */
  20     protected $registered = [];
  21
  22     /**
  23      * {@inheritdoc}
  24      */
  25     public function add($provider)
  26     {
  27         if (is_string($provider) && class_exists($provider)) {
  28             $provider = new $provider;
  29         }
  30
  31         if ($provider instanceof ContainerAwareInterface) {
  32             $provider->setContainer($this->getContainer());
  33         }
  34
  35         if ($provider instanceof BootableServiceProviderInterface) {
  36             $provider->boot();
  37         }
  38
  39         if ($provider instanceof ServiceProviderInterface) {
  40             foreach ($provider->provides() as $service) {
  41                 $this->providers[$service] = $provider;
  42             }
  43
  44             return $this;
  45         }
  46
  47         throw new \InvalidArgumentException(
  48             'A service provider must be a fully qualified class name or instance ' .
  49             'of (\League\Container\ServiceProvider\ServiceProviderInterface)'
  50         );
  51     }
  52
  53     /**
  54      * {@inheritdoc}
  55      */
  56     public function provides($service)
  57     {
  58         return array_key_exists($service, $this->providers);
  59     }
  60
  61     /**
  62      * {@inheritdoc}
  63      */
  64     public function register($service)
  65     {
  66         if (! array_key_exists($service, $this->providers)) {
  67             throw new \InvalidArgumentException(
  68                 sprintf('(%s) is not provided by a service provider', $service)
  69             );
  70         }
  71
  72         $provider  = $this->providers[$service];
  73         $signature = get_class($provider);
  74
  75         if ($provider instanceof SignatureServiceProviderInterface) {
  76             $signature = $provider->getSignature();
  77         }
  78
  79         // ensure that the provider hasn't already been invoked by any other service request
  80         if (in_array($signature, $this->registered)) {
  81             return;
  82         }
  83
  84         $provider->register();
  85
  86         $this->registered[] = $signature;
  87     }
  88 }