1: <?php
 2: 
 3: /**
 4:  * This file is part of the Nette Framework (https://nette.org)
 5:  *
 6:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
 7:  *
 8:  * For the full copyright and license information, please view
 9:  * the file license.txt that was distributed with this source code.
10:  * @package Nette\Loaders
11:  */
12: 
13: 
14: 
15: /**
16:  * Auto loader is responsible for loading classes and interfaces.
17:  *
18:  * @author     David Grudl
19:  * @package Nette\Loaders
20:  */
21: abstract class NAutoLoader extends NObject
22: {
23:     /** @var array  list of registered loaders */
24:     static private $loaders = array();
25: 
26:     /** @var int  for profiling purposes */
27:     public static $count = 0;
28: 
29: 
30: 
31:     /**
32:      * Try to load the requested class.
33:      * @param  string  class/interface name
34:      * @return void
35:      */
36:     final public static function load($type)
37:     {
38:         foreach (func_get_args() as $type) {
39:             if (!class_exists($type)) {
40:                 throw new InvalidStateException("Unable to load class or interface '$type'.");
41:             }
42:         }
43:     }
44: 
45: 
46: 
47:     /**
48:      * Return all registered autoloaders.
49:      * @return array of AutoLoader
50:      */
51:     final public static function getLoaders()
52:     {
53:         return array_values(self::$loaders);
54:     }
55: 
56: 
57: 
58:     /**
59:      * Register autoloader.
60:      * @return void
61:      */
62:     public function register()
63:     {
64:         if (!function_exists('spl_autoload_register')) {
65:             throw new RuntimeException('spl_autoload does not exist in this PHP installation.');
66:         }
67: 
68:         spl_autoload_register(array($this, 'tryLoad'));
69:         self::$loaders[spl_object_hash($this)] = $this;
70:     }
71: 
72: 
73: 
74:     /**
75:      * Unregister autoloader.
76:      * @return bool
77:      */
78:     public function unregister()
79:     {
80:         unset(self::$loaders[spl_object_hash($this)]);
81:         return spl_autoload_unregister(array($this, 'tryLoad'));
82:     }
83: 
84: 
85: 
86:     /**
87:      * Handles autoloading of classes or interfaces.
88:      * @param  string
89:      * @return void
90:      */
91:     abstract public function tryLoad($type);
92: 
93: }
94: