1: <?php
 2: /**
 3:  * This file is part of the Autarky package.
 4:  *
 5:  * (c) Andreas Lutro <anlutro@gmail.com>
 6:  *
 7:  * For the full copyright and license information, please view the LICENSE
 8:  * file that was distributed with this source code.
 9:  */
10: 
11: namespace Autarky\Container\Proxy;
12: 
13: use Autarky\Container\ContainerInterface;
14: 
15: abstract class AbstractProxy
16: {
17:     /**
18:      * @var array
19:      */
20:     protected static $instances = [];
21: 
22:     /**
23:      * @var ContainerInterface
24:      */
25:     protected static $container;
26: 
27:     /**
28:      * This class is a static class and should not be instantiated.
29:      */
30:     private function __construct()
31:     {
32:         //
33:     }
34: 
35:     public static function setProxyContainer(ContainerInterface $container = null)
36:     {
37:         static::$instances = [];
38:         static::$container = $container;
39:     }
40: 
41:     public static function setProxyInstance($instance = null)
42:     {
43:         static::$instances[static::getProxyContainerKey()] = $instance;
44:     }
45: 
46:     protected static function resolveProxyInstance()
47:     {
48:         return static::$container->resolve(static::getProxyContainerKey());
49:     }
50: 
51:     public static function __callStatic($method, array $args)
52:     {
53:         $key = static::getProxyContainerKey();
54: 
55:         if (!array_key_exists($key, static::$instances)) {
56:             static::$instances[$key] = static::resolveProxyInstance();
57:         }
58: 
59:         return call_user_func_array([static::$instances[$key], $method], $args);
60:     }
61: 
62:     /**
63:      * @return string
64:      */
65:     protected static function getProxyContainerKey()
66:     {
67:         // abstract static methods are not allowed, so do this instead
68:         throw new \RuntimeException('Method '.__FUNCTION__.' must be implemented.');
69:     }
70: }
71: