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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\RangeParser\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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final class VersionRangeParser |
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{ |
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use ChunkBySeparator; |
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/** @var LogicalOperatorProcessor */ |
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private $logicalOperatorProcessor; |
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/** @var RangeParserInterface[] */ |
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private $rangeParserList; |
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/** @var string[] Array of tokens representing logical operators */ |
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private $operatorTokenList = [ |
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Token::LOGICAL_AND, |
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Token::LOGICAL_OR |
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]; |
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/** |
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* Constructor |
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* |
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* @param LogicalOperatorProcessor $logicalOperatorProcessor |
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* @param RangeParserInterface[] $rangeParserList |
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*/ |
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public function __construct( |
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LogicalOperatorProcessor $logicalOperatorProcessor, |
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array $rangeParserList |
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) { |
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$this->logicalOperatorProcessor = $logicalOperatorProcessor; |
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$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 $tokenList) |
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{ |
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$realResultList = []; |
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$tokenClusterList = $this->chunk($tokenList, $this->operatorTokenList); |
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foreach ($tokenClusterList as $tokenCluster) { |
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$parsed = $this->attemptParse($tokenCluster); |
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if (is_null($parsed)) { |
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if (in_array($tokenCluster[0]->getType(), $this->operatorTokenList)) { |
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$realResultList[] = $tokenCluster[0]; |
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} else { |
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throw new \RuntimeException('Unable to parse version string'); |
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} |
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} else { |
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$realResultList[] = $parsed; |
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} |
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} |
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return $this->logicalOperatorProcessor->run($realResultList); |
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} |
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/** |
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* Attempt to parse the token list as a version range into an object implementing VersionRangeInterface |
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* |
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* Iterates through the provided range parsers checking to see if they can parse the token list. If they can then we |
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* call the parse method and return a version range object, otherwise return null. |
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* |
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* @param Token[] $tokenList |
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* |
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* @return VersionRangeInterface|null |
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*/ |
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private function attemptParse(array $tokenList) |
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{ |
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$parsed = null; |
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foreach ($this->rangeParserList as $rangeParser) { |
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if ($rangeParser->canParse($tokenList)) { |
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$parsed = $rangeParser->parse($tokenList); |
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break; |
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} |
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} |
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return $parsed; |
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} |
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} |
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ptlis /
semantic-version
Very long variable names usually make code harder to read. It is therefore recommended not to make variable names too verbose.