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<?php |
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/** |
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* @copyright 2018 Aleksander Stelmaczonek <[email protected]> |
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* @license MIT License, see license file distributed with this source code |
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*/ |
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namespace Koriit\PHPDeps\Tokenizer; |
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use Koriit\PHPDeps\Tokenizer\Exceptions\MalformedFile; |
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use Koriit\PHPDeps\Tokenizer\Exceptions\UnexpectedEndOfTokens; |
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use Koriit\PHPDeps\Tokenizer\Exceptions\UnexpectedToken; |
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use Koriit\PHPDeps\Tokenizer\Exceptions\WrongPosition; |
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class DependenciesReader |
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{ |
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/** |
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* @param string $filePath Path to file to parse |
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* |
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* @throws MalformedFile |
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* |
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* @return string[] Real dependencies read from use statements |
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*/ |
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public function findFileDependencies($filePath) |
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{ |
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$tokens = TokensIterator::fromFile($filePath); |
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$useDependencies = []; |
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try { |
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while ($tokens->valid()) { |
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if ($tokens->currentIsOneOf([T_CLASS, T_TRAIT, T_FUNCTION, T_INTERFACE])) { |
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$tokens->skipNextBlock(); |
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} elseif ($tokens->currentIs(T_USE)) { |
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$useDependencies[] = $this->readUseStatement($tokens); |
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} |
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$tokens->next(); |
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} |
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} catch (UnexpectedEndOfTokens $e) { |
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throw new MalformedFile($filePath, $e); |
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} catch (UnexpectedToken $e) { |
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throw new MalformedFile($filePath, $e); |
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} |
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return $useDependencies; |
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} |
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/** |
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* @param TokensIterator $it |
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* |
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* @throws UnexpectedEndOfTokens |
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* @throws UnexpectedToken |
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* |
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* @return string Real dependency from use statement |
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*/ |
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private function readUseStatement(TokensIterator $it) |
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{ |
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if (!$it->valid() || !$it->currentIs(T_USE)) { |
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throw new WrongPosition('Not at use statement position.'); |
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} |
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$it->skipTokensIfPresent([T_USE, T_WHITESPACE, T_CONST, T_FUNCTION]); |
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$dependency = ''; |
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while ($it->valid()) { |
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$token = $it->current(); |
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if ($token == ';' || $it->currentIs(T_AS)) { |
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return $dependency; |
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} elseif ($it->currentIsOneOf([T_STRING, T_NS_SEPARATOR])) { |
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$dependency .= $token[1]; |
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} elseif (!$it->currentIs(T_WHITESPACE)) { |
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throw new UnexpectedToken($token); |
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} |
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$it->next(); |
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} |
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throw new UnexpectedEndOfTokens(); |
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} |
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} |
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Koriit /
PHPDeps
