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1 | <?php |
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2 | |||
3 | /** |
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4 | * @copyright (c) 2014-2017 brian ridley |
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5 | * @author brian ridley <[email protected]> |
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6 | * @license http://opensource.org/licenses/MIT MIT |
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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 | |||
12 | namespace ptlis\SemanticVersion\Parse\RangeMatcher; |
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13 | |||
14 | use ptlis\SemanticVersion\Comparator\ComparatorFactory; |
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15 | use ptlis\SemanticVersion\Parse\Token; |
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16 | use ptlis\SemanticVersion\Parse\VersionParser; |
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17 | use ptlis\SemanticVersion\VersionRange\ComparatorVersion; |
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18 | use ptlis\SemanticVersion\VersionRange\VersionRangeInterface; |
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19 | |||
20 | /** |
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21 | * Comparator versions store a comparator & version specifying part of a version range. |
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22 | */ |
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23 | final class ComparatorVersionParser implements RangeParserInterface |
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24 | { |
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25 | use ChunkByDash; |
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26 | |||
27 | /** @var ComparatorFactory */ |
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28 | private $comparatorFactory; |
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29 | |||
30 | /** @var VersionParser */ |
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31 | private $versionParser; |
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32 | |||
33 | /** |
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34 | * Constructor. |
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35 | * |
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36 | * @param ComparatorFactory $comparatorFactory |
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37 | * @param VersionParser $versionParser |
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38 | */ |
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39 | 7 | public function __construct( |
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40 | ComparatorFactory $comparatorFactory, |
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41 | VersionParser $versionParser |
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42 | ) { |
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43 | 7 | $this->comparatorFactory = $comparatorFactory; |
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44 | 7 | $this->versionParser = $versionParser; |
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45 | 7 | } |
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46 | |||
47 | /** |
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48 | * Returns true if the tokens can be parsed as a ComparatorVersion. |
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49 | * |
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50 | * @param Token[] $tokenList |
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51 | * |
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52 | * @return boolean |
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53 | */ |
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54 | 7 | public function canParse(array $tokenList) |
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55 | { |
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56 | return ( |
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57 | 7 | $this->versionParser->canParse($tokenList) |
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58 | || ( |
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59 | 6 | $this->comparatorFactory->isComparator($tokenList[0]->getValue()) |
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60 | 7 | && $this->versionParser->canParse(array_slice($tokenList, 1)) |
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61 | ) |
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62 | ); |
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63 | } |
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64 | |||
65 | /** |
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66 | * Build a ComparatorVersion representing the comparator & version. |
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67 | * |
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68 | * @param Token[] $tokenList |
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69 | * |
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70 | * @return VersionRangeInterface |
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71 | */ |
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72 | 6 | public function parse(array $tokenList) |
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73 | { |
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74 | 6 | if (!$this->canParse($tokenList)) { |
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75 | 1 | throw new \RuntimeException('Invalid comparator (>1.3.0) version range'); |
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76 | } |
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77 | |||
78 | // Default to equality comparator |
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79 | 5 | $comparator = $this->comparatorFactory->get('='); |
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80 | |||
81 | // Prefixed comparator, create comparator instance and remove from token list |
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82 | 5 | if ($this->comparatorFactory->isComparator($tokenList[0]->getValue())) { |
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83 | 4 | $comparator = $this->comparatorFactory->get($tokenList[0]->getValue()); |
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84 | 4 | $tokenList = array_slice($tokenList, 1); |
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85 | } |
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86 | |||
87 | 5 | return new ComparatorVersion( |
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88 | $comparator, |
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89 | 5 | $this->versionParser->parse($tokenList) |
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90 | ); |
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91 | } |
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92 | } |
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93 |
Unless you are absolutely sure that the expression can never be null because of other conditions, we strongly recommend to add an additional type check to your code: