Verzeichnisstruktur phpBB-3.1.0
- Veröffentlicht
- 27.10.2014
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Name.php
01 <?php
02
03 /*
04 * This file is part of Twig.
05 *
06 * (c) 2009 Fabien Potencier
07 * (c) 2009 Armin Ronacher
08 *
09 * For the full copyright and license information, please view the LICENSE
10 * file that was distributed with this source code.
11 */
12 class Twig_Node_Expression_Name extends Twig_Node_Expression
13 {
14 protected $specialVars = array(
15 '_self' => '$this',
16 '_context' => '$context',
17 '_charset' => '$this->env->getCharset()',
18 );
19
20 public function __construct($name, $lineno)
21 {
22 parent::__construct(array(), array('name' => $name, 'is_defined_test' => false, 'ignore_strict_check' => false, 'always_defined' => false), $lineno);
23 }
24
25 public function compile(Twig_Compiler $compiler)
26 {
27 $name = $this->getAttribute('name');
28
29 if ($this->getAttribute('is_defined_test')) {
30 if ($this->isSpecial()) {
31 $compiler->repr(true);
32 } else {
33 $compiler->raw('array_key_exists(')->repr($name)->raw(', $context)');
34 }
35 } elseif ($this->isSpecial()) {
36 $compiler->raw($this->specialVars[$name]);
37 } elseif ($this->getAttribute('always_defined')) {
38 $compiler
39 ->raw('$context[')
40 ->string($name)
41 ->raw(']')
42 ;
43 } else {
44 // remove the non-PHP 5.4 version when PHP 5.3 support is dropped
45 // as the non-optimized version is just a workaround for slow ternary operator
46 // when the context has a lot of variables
47 if (version_compare(phpversion(), '5.4.0RC1', '>=')) {
48 // PHP 5.4 ternary operator performance was optimized
49 $compiler
50 ->raw('(isset($context[')
51 ->string($name)
52 ->raw(']) ? $context[')
53 ->string($name)
54 ->raw('] : ')
55 ;
56
57 if ($this->getAttribute('ignore_strict_check') || !$compiler->getEnvironment()->isStrictVariables()) {
58 $compiler->raw('null)');
59 } else {
60 $compiler->raw('$this->getContext($context, ')->string($name)->raw('))');
61 }
62 } else {
63 $compiler
64 ->raw('$this->getContext($context, ')
65 ->string($name)
66 ;
67
68 if ($this->getAttribute('ignore_strict_check')) {
69 $compiler->raw(', true');
70 }
71
72 $compiler
73 ->raw(')')
74 ;
75 }
76 }
77 }
78
79 public function isSpecial()
80 {
81 return isset($this->specialVars[$this->getAttribute('name')]);
82 }
83
84 public function isSimple()
85 {
86 return !$this->isSpecial() && !$this->getAttribute('is_defined_test');
87 }
88 }
89