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\Utils;
 9: 
10: use Nette;
11: 
12: 
13: /**
14:  * Limited scope for PHP code evaluation and script including.
15:  *
16:  * @author     David Grudl
17:  */
18: class LimitedScope
19: {
20: 
21:     /**
22:      * Static class - cannot be instantiated.
23:      */
24:     final public function __construct()
25:     {
26:         throw new Nette\StaticClassException;
27:     }
28: 
29: 
30:     /**
31:      * Evaluates code in limited scope.
32:      * @param  string  PHP code
33:      * @param  array   local variables
34:      * @return mixed   the return value of the evaluated code
35:      */
36:     public static function evaluate(/*$code, array $vars = NULL*/)
37:     {
38:         if (func_num_args() > 1) {
39:             foreach (func_get_arg(1) as $__k => $__v) $$__k = $__v;
40:             unset($__k, $__v);
41:         }
42:         $res = eval('?>' . func_get_arg(0));
43:         if ($res === FALSE && ($error = error_get_last()) && $error['type'] === E_PARSE) {
44:             throw new Nette\FatalErrorException($error['message'], 0, $error['type'], $error['file'], $error['line'], NULL);
45:         }
46:         return $res;
47:     }
48: 
49: 
50:     /**
51:      * Includes script in a limited scope.
52:      * @param  string  file to include
53:      * @param  array   local variables or TRUE meaning include once
54:      * @return mixed   the return value of the included file
55:      */
56:     public static function load(/*$file, array $vars = NULL*/)
57:     {
58:         if (func_num_args() > 1) {
59:             if (func_get_arg(1) === TRUE) {
60:                 return require func_get_arg(0);
61:             }
62:             foreach (func_get_arg(1) as $__k => $__v) $$__k = $__v;
63:             unset($__k, $__v);
64:         }
65:         return require func_get_arg(0);
66:     }
67: 
68: }
69: