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<?php |
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/** |
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* @copyright (c) 2014-2017 brian ridley |
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* @author brian ridley <[email protected]> |
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* @license http://opensource.org/licenses/MIT MIT |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace ptlis\SemanticVersion\Parse; |
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use ptlis\SemanticVersion\Parse\Matcher\RangeParserInterface; |
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use ptlis\SemanticVersion\VersionRange\VersionRangeInterface; |
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/** |
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* Parser accepting array of tokens and returning an array of comparators & versions. |
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* |
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* @todo Correctly validate versions |
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*/ |
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final class VersionParser |
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{ |
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/** |
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* @var RangeParserInterface[] |
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*/ |
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private $rangeParserList; |
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/** |
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* Constructor. |
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* |
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* @param RangeParserInterface[] $rangeParserList |
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*/ |
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public function __construct(array $rangeParserList) |
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{ |
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$this->rangeParserList = $rangeParserList; |
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} |
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/** |
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* Parse a version range. |
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* |
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* @param Token[] $tokenList |
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* |
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* @return VersionRangeInterface |
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*/ |
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public function parseRange(array $tokenList) |
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{ |
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$clusteredTokenList = $this->clusterTokens($tokenList); |
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$operatorList = [ |
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Token::LOGICAL_AND, |
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Token::LOGICAL_OR |
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]; |
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$realResultList = []; |
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foreach ($clusteredTokenList as $clusteredTokens) { |
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$parsed = null; |
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foreach ($this->rangeParserList as $rangeParser) { |
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if ($rangeParser->canParse($clusteredTokens)) { |
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$parsed = $rangeParser->parse($clusteredTokens); |
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break; |
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} |
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} |
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if (is_null($parsed)) { |
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if (in_array($clusteredTokens[0]->getType(), $operatorList)) { |
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$realResultList[] = $clusteredTokens[0]; |
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} else { |
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throw new \RuntimeException('Unable to parse version string'); |
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} |
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} else { |
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$realResultList[] = $parsed; |
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} |
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} |
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$buildRange = new LogicalOperatorProcessor(); |
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return $buildRange->run($realResultList); |
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} |
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/** |
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* Clusters the tokens, breaking them up upon finding a logical AND / OR. |
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* |
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* @param Token[] $tokenList |
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* |
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* @return Token[][] $tokenList |
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*/ |
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private function clusterTokens(array $tokenList) |
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{ |
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$comparatorTokenList = [ |
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Token::LOGICAL_AND, |
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Token::LOGICAL_OR |
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]; |
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$tokenClusterList = []; |
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// Stores tokens not yet parcelled out |
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$tokenAccumulator = []; |
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$tokenListCount = count($tokenList); |
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for ($i = 0; $i < $tokenListCount; $i++) { |
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$currentToken = $tokenList[$i]; |
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if (in_array($currentToken->getType(), $comparatorTokenList)) { |
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$tokenClusterList[] = $tokenAccumulator; |
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$tokenClusterList[] = [$currentToken]; |
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$tokenAccumulator = []; |
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} else { |
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$tokenAccumulator[] = $currentToken; |
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} |
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} |
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// Add any remaining tokens |
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if (count($tokenAccumulator)) { |
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$tokenClusterList[] = $tokenAccumulator; |
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} |
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return $tokenClusterList; |
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} |
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} |
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ptlis /
semantic-version
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