1 | <?php |
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2 | |||
3 | /** |
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4 | * @file |
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5 | * This file is part of the PdfParser library. |
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6 | * |
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7 | * @author Sébastien MALOT <[email protected]> |
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8 | * @date 2017-01-03 |
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9 | * |
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10 | * @license LGPLv3 |
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11 | * @url <https://github.com/smalot/pdfparser> |
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12 | * |
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13 | * PdfParser is a pdf library written in PHP, extraction oriented. |
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14 | * Copyright (C) 2017 - Sébastien MALOT <[email protected]> |
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15 | * |
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16 | * This program is free software: you can redistribute it and/or modify |
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17 | * it under the terms of the GNU Lesser General Public License as published by |
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18 | * the Free Software Foundation, either version 3 of the License, or |
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19 | * (at your option) any later version. |
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20 | * |
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21 | * This program is distributed in the hope that it will be useful, |
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22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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24 | * GNU Lesser General Public License for more details. |
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25 | * |
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26 | * You should have received a copy of the GNU Lesser General Public License |
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27 | * along with this program. |
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28 | * If not, see <http://www.pdfparser.org/sites/default/LICENSE.txt>. |
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29 | */ |
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30 | |||
31 | namespace Smalot\PdfParser\Element; |
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32 | |||
33 | use Smalot\PdfParser\Document; |
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34 | use Smalot\PdfParser\Element; |
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35 | |||
36 | /** |
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37 | * Class ElementNull |
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38 | */ |
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39 | class ElementNull extends Element |
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40 | { |
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41 | 9 | public function __construct() |
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42 | { |
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43 | 9 | parent::__construct(null, null); |
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44 | 9 | } |
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45 | |||
46 | /** |
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47 | * @return string |
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48 | */ |
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49 | 2 | public function __toString() |
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50 | { |
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51 | 2 | return 'null'; |
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52 | } |
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53 | |||
54 | /** |
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55 | * @return bool |
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56 | */ |
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57 | 2 | public function equals($value) |
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58 | { |
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59 | 2 | return $this->getContent() === $value; |
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60 | } |
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61 | |||
62 | /** |
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63 | * @param string $content |
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64 | * @param Document $document |
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65 | * @param int $offset |
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66 | * |
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67 | * @return bool|ElementNull |
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68 | */ |
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69 | 10 | public static function parse($content, Document $document = null, &$offset = 0) |
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70 | { |
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71 | 10 | if (preg_match('/^\s*(null)/s', $content, $match)) { |
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72 | 2 | $offset += strpos($content, 'null') + \strlen('null'); |
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73 | |||
74 | 2 | return new self(); |
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75 | } |
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76 | |||
77 | 10 | return false; |
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78 | } |
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79 | } |
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80 |
This check looks for parameters that have been defined for a function or method, but which are not used in the method body.