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<?php /** * Ensures that functions within functions are never used. * * @author Greg Sherwood <gsherwood@squiz.net> * @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600) * @license https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/licence.txt BSD Licence */ namespace PHP_CodeSniffer\Standards\Squiz\Sniffs\PHP; use PHP_CodeSniffer\Files\File; use PHP_CodeSniffer\Sniffs\Sniff; use PHP_CodeSniffer\Util\Tokens; class InnerFunctionsSniff implements Sniff { /** * Returns an array of tokens this test wants to listen for. * * @return array<int|string> */ public function register() { return [T_FUNCTION]; }//end register() /** * Processes this test, when one of its tokens is encountered. * * @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned. * @param int $stackPtr The position of the current token in the * stack passed in $tokens. * * @return void */ public function process(File $phpcsFile, $stackPtr) { $tokens = $phpcsFile->getTokens(); if (isset($tokens[$stackPtr]['conditions']) === false) { return; } $conditions = $tokens[$stackPtr]['conditions']; $reversedConditions = array_reverse($conditions, true); $outerFuncToken = null; foreach ($reversedConditions as $condToken => $condition) { if ($condition === T_FUNCTION || $condition === T_CLOSURE) { $outerFuncToken = $condToken; break; } if (array_key_exists($condition, Tokens::$ooScopeTokens) === true) { // Ignore methods in OOP structures defined within functions. return; } } if ($outerFuncToken === null) { // Not a nested function. return; } $error = 'The use of inner functions is forbidden'; $phpcsFile->addError($error, $stackPtr, 'NotAllowed'); }//end process() }//end class
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