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:  */
 7: 
 8: namespace Nette\Loaders;
 9: 
10: use Nette;
11: 
12: 
13: /**
14:  * Auto loader is responsible for loading classes and interfaces.
15:  *
16:  * @author     David Grudl
17:  */
18: abstract class AutoLoader extends Nette\Object
19: {
20:     /** @var array  list of registered loaders */
21:     static private $loaders = array();
22: 
23:     /** @var int  for profiling purposes */
24:     public static $count = 0;
25: 
26: 
27:     /**
28:      * Try to load the requested class.
29:      * @param  string  class/interface name
30:      * @return void
31:      */
32:     public static function load($type)
33:     {
34:         foreach (func_get_args() as $type) {
35:             if (!class_exists($type)) {
36:                 throw new Nette\InvalidStateException("Unable to load class or interface '$type'.");
37:             }
38:         }
39:     }
40: 
41: 
42:     /**
43:      * Return all registered autoloaders.
44:      * @return AutoLoader[]
45:      */
46:     public static function getLoaders()
47:     {
48:         return array_values(self::$loaders);
49:     }
50: 
51: 
52:     /**
53:      * Register autoloader.
54:      * @return void
55:      */
56:     public function register()
57:     {
58:         if (!function_exists('spl_autoload_register')) {
59:             throw new Nette\NotSupportedException('spl_autoload does not exist in this PHP installation.');
60:         }
61: 
62:         spl_autoload_register(array($this, 'tryLoad'));
63:         self::$loaders[spl_object_hash($this)] = $this;
64:     }
65: 
66: 
67:     /**
68:      * Unregister autoloader.
69:      * @return bool
70:      */
71:     public function unregister()
72:     {
73:         unset(self::$loaders[spl_object_hash($this)]);
74:         return spl_autoload_unregister(array($this, 'tryLoad'));
75:     }
76: 
77: 
78:     /**
79:      * Handles autoloading of classes or interfaces.
80:      * @param  string
81:      * @return void
82:      */
83:     abstract public function tryLoad($type);
84: 
85: }
86: