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:  */
11: 
12: namespace Nette\Loaders;
13: 
14: use Nette;
15: 
16: 
17: 
18: /**
19:  * Auto loader is responsible for loading classes and interfaces.
20:  *
21:  * @author     David Grudl
22:  */
23: abstract class AutoLoader extends Nette\Object
24: {
25:     /** @var array  list of registered loaders */
26:     static private $loaders = array();
27: 
28:     /** @var int  for profiling purposes */
29:     public static $count = 0;
30: 
31: 
32: 
33:     /**
34:      * Try to load the requested class.
35:      * @param  string  class/interface name
36:      * @return void
37:      */
38:     final public static function load($type)
39:     {
40:         foreach (func_get_args() as $type) {
41:             if (!class_exists($type)) {
42:                 throw new \InvalidStateException("Unable to load class or interface '$type'.");
43:             }
44:         }
45:     }
46: 
47: 
48: 
49:     /**
50:      * Return all registered autoloaders.
51:      * @return array of AutoLoader
52:      */
53:     final public static function getLoaders()
54:     {
55:         return array_values(self::$loaders);
56:     }
57: 
58: 
59: 
60:     /**
61:      * Register autoloader.
62:      * @return void
63:      */
64:     public function register()
65:     {
66:         if (!function_exists('spl_autoload_register')) {
67:             throw new \RuntimeException('spl_autoload does not exist in this PHP installation.');
68:         }
69: 
70:         spl_autoload_register(array($this, 'tryLoad'));
71:         self::$loaders[spl_object_hash($this)] = $this;
72:     }
73: 
74: 
75: 
76:     /**
77:      * Unregister autoloader.
78:      * @return bool
79:      */
80:     public function unregister()
81:     {
82:         unset(self::$loaders[spl_object_hash($this)]);
83:         return spl_autoload_unregister(array($this, 'tryLoad'));
84:     }
85: 
86: 
87: 
88:     /**
89:      * Handles autoloading of classes or interfaces.
90:      * @param  string
91:      * @return void
92:      */
93:     abstract public function tryLoad($type);
94: 
95: }
96: