Verzeichnisstruktur phpBB-3.1.0
- Veröffentlicht
- 27.10.2014
So funktioniert es
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Default.php
01 <?php
02
03 /*
04 * This file is part of Twig.
05 *
06 * (c) 2011 Fabien Potencier
07 *
08 * For the full copyright and license information, please view the LICENSE
09 * file that was distributed with this source code.
10 */
11
12 /**
13 * Returns the value or the default value when it is undefined or empty.
14 *
15 * <pre>
16 * {{ var.foo|default('foo item on var is not defined') }}
17 * </pre>
18 *
19 * @author Fabien Potencier <fabien@symfony.com>
20 */
21 class Twig_Node_Expression_Filter_Default extends Twig_Node_Expression_Filter
22 {
23 public function __construct(Twig_NodeInterface $node, Twig_Node_Expression_Constant $filterName, Twig_NodeInterface $arguments, $lineno, $tag = null)
24 {
25 $default = new Twig_Node_Expression_Filter($node, new Twig_Node_Expression_Constant('default', $node->getLine()), $arguments, $node->getLine());
26
27 if ('default' === $filterName->getAttribute('value') && ($node instanceof Twig_Node_Expression_Name || $node instanceof Twig_Node_Expression_GetAttr)) {
28 $test = new Twig_Node_Expression_Test_Defined(clone $node, 'defined', new Twig_Node(), $node->getLine());
29 $false = count($arguments) ? $arguments->getNode(0) : new Twig_Node_Expression_Constant('', $node->getLine());
30
31 $node = new Twig_Node_Expression_Conditional($test, $default, $false, $node->getLine());
32 } else {
33 $node = $default;
34 }
35
36 parent::__construct($node, $filterName, $arguments, $lineno, $tag);
37 }
38
39 public function compile(Twig_Compiler $compiler)
40 {
41 $compiler->subcompile($this->getNode('node'));
42 }
43 }
44