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<?php |
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/** |
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* \PHPCompatibility\Sniffs\PHP\NewGeneratorReturnSniff. |
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* |
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* PHP version 7.0 |
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* |
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* @category PHP |
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* @package PHPCompatibility |
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* @author Juliette Reinders Folmer <[email protected]> |
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*/ |
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namespace PHPCompatibility\Sniffs\PHP; |
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use PHPCompatibility\Sniff; |
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/** |
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* \PHPCompatibility\Sniffs\PHP\NewGeneratorReturnSniff. |
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* |
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* As of PHP 7.0, a return statement can be used within a generator for a final expression to be returned. |
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* |
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* PHP version 7.0 |
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* |
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* @category PHP |
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* @package PHPCompatibility |
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* @author Juliette Reinders Folmer <[email protected]> |
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*/ |
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class NewGeneratorReturnSniff extends Sniff |
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{ |
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/** |
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* Returns an array of tokens this test wants to listen for. |
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* |
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* @return array |
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*/ |
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public function register() |
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{ |
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return array( |
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// phpcs:ignore PHPCompatibility.PHP.NewConstants.t_yieldFound - PHPCS backfills the token. |
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T_YIELD, |
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T_YIELD_FROM, |
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); |
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} |
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/** |
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* Processes this test, when one of its tokens is encountered. |
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* |
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* @param \PHP_CodeSniffer_File $phpcsFile The file being scanned. |
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* @param int $stackPtr The position of the current token in the |
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* stack passed in $tokens. |
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* |
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* @return void|int Void or a stack pointer to skip forward. |
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*/ |
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public function process(\PHP_CodeSniffer_File $phpcsFile, $stackPtr) |
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{ |
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if ($this->supportsBelow('5.6') !== true) { |
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return; |
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} |
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$function = $phpcsFile->getCondition($stackPtr, T_FUNCTION); |
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if ($function === false) { |
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// Try again, but now for a closure. |
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$function = $phpcsFile->getCondition($stackPtr, T_CLOSURE); |
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} |
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if ($function === false) { |
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// Yield outside function scope, fatal error, but not our concern. |
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return; |
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} |
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$tokens = $phpcsFile->getTokens(); |
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View Code Duplication |
if (isset($tokens[$function]['scope_opener'], $tokens[$function]['scope_closer']) === false) { |
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// Can't reliably determine start/end of function scope. |
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return; |
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} |
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$hasReturn = $phpcsFile->findNext(T_RETURN, ($tokens[$function]['scope_opener'] + 1), $tokens[$function]['scope_closer']); |
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if ($hasReturn === false) { |
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return; |
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} |
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$phpcsFile->addError( |
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'Returning a final expression from a generator was not supported in PHP 5.6 or earlier', |
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$hasReturn, |
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'ReturnFound' |
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); |
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// Don't examine this function again. |
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return $tokens[$function]['scope_closer']; |
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} |
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} |
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wimg /
PHPCompatibility
