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1 <?php |
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2 |
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3 /* |
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4 * This file is part of Twig. |
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5 * |
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6 * (c) 2010 Fabien Potencier |
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7 * |
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8 * For the full copyright and license information, please view the LICENSE |
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9 * file that was distributed with this source code. |
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10 */ |
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11 |
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12 /** |
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13 * Represents a template function. |
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14 * |
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15 * @package twig |
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16 * @author Fabien Potencier <fabien@symfony.com> |
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17 */ |
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18 abstract class Twig_Function implements Twig_FunctionInterface |
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19 { |
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20 protected $options; |
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21 |
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22 public function __construct(array $options = array()) |
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23 { |
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24 $this->options = array_merge(array( |
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25 'needs_environment' => false, |
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26 'needs_context' => false, |
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27 ), $options); |
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28 } |
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29 |
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30 public function needsEnvironment() |
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31 { |
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32 return $this->options['needs_environment']; |
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33 } |
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34 |
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35 public function needsContext() |
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36 { |
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37 return $this->options['needs_context']; |
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38 } |
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39 |
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40 public function getSafe(Twig_Node $functionArgs) |
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41 { |
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42 if (isset($this->options['is_safe'])) { |
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43 return $this->options['is_safe']; |
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44 } |
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45 |
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46 if (isset($this->options['is_safe_callback'])) { |
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47 return call_user_func($this->options['is_safe_callback'], $functionArgs); |
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48 } |
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49 |
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50 return array(); |
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51 } |
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52 } |