1: <?php
 2: 
 3: /**
 4:  * This file is part of the Nette Framework (https://nette.org)
 5:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
 6:  * @package Nette\Loaders
 7:  */
 8: 
 9: 
10: 
11: /**
12:  * Auto loader is responsible for loading classes and interfaces.
13:  *
14:  * @author     David Grudl
15:  * @package Nette\Loaders
16:  */
17: abstract class NAutoLoader extends NObject
18: {
19:     /** @var array  list of registered loaders */
20:     static private $loaders = array();
21: 
22:     /** @var int  for profiling purposes */
23:     public static $count = 0;
24: 
25: 
26:     /**
27:      * Try to load the requested class.
28:      * @param  string  class/interface name
29:      * @return void
30:      */
31:     public static function load($type)
32:     {
33:         foreach (func_get_args() as $type) {
34:             if (!class_exists($type)) {
35:                 throw new InvalidStateException("Unable to load class or interface '$type'.");
36:             }
37:         }
38:     }
39: 
40: 
41:     /**
42:      * Return all registered autoloaders.
43:      * @return NAutoLoader[]
44:      */
45:     public static function getLoaders()
46:     {
47:         return array_values(self::$loaders);
48:     }
49: 
50: 
51:     /**
52:      * Register autoloader.
53:      * @return void
54:      */
55:     public function register()
56:     {
57:         if (!function_exists('spl_autoload_register')) {
58:             throw new NotSupportedException('spl_autoload does not exist in this PHP installation.');
59:         }
60: 
61:         spl_autoload_register(array($this, 'tryLoad'));
62:         self::$loaders[spl_object_hash($this)] = $this;
63:     }
64: 
65: 
66:     /**
67:      * Unregister autoloader.
68:      * @return bool
69:      */
70:     public function unregister()
71:     {
72:         unset(self::$loaders[spl_object_hash($this)]);
73:         return spl_autoload_unregister(array($this, 'tryLoad'));
74:     }
75: 
76: 
77:     /**
78:      * Handles autoloading of classes or interfaces.
79:      * @param  string
80:      * @return void
81:      */
82:     abstract public function tryLoad($type);
83: 
84: }
85: