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<?php |
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/** |
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* PHPCompatibility_Sniffs_PHP_ForbiddenNamesSniff. |
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* |
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* PHP version 5.4 |
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* |
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* @category PHP |
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* @package PHPCompatibility |
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* @author Wim Godden <[email protected]> |
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* @copyright 2012 Cu.be Solutions bvba |
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*/ |
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/** |
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* PHPCompatibility_Sniffs_PHP_ForbiddenNamesSniff. |
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* |
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* Prohibits the use of reserved keywords as class, function, namespace or constant names. |
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* |
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* PHP version 5.4 |
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* |
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* @category PHP |
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* @package PHPCompatibility |
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* @author Wim Godden <[email protected]> |
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* @copyright 2012 Cu.be Solutions bvba |
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*/ |
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class PHPCompatibility_Sniffs_PHP_ForbiddenNamesSniff extends PHPCompatibility_Sniff |
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{ |
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/** |
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* A list of keywords that can not be used as function, class and namespace name or constant name. |
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* Mentions since which version it's not allowed. |
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* |
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* @var array(string => string) |
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*/ |
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protected $invalidNames = array( |
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'abstract' => '5.0', |
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'and' => 'all', |
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'array' => 'all', |
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'as' => 'all', |
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'break' => 'all', |
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'callable' => '5.4', |
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'case' => 'all', |
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'catch' => '5.0', |
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'class' => 'all', |
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'clone' => '5.0', |
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'const' => 'all', |
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'continue' => 'all', |
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'declare' => 'all', |
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'default' => 'all', |
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'do' => 'all', |
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'else' => 'all', |
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'elseif' => 'all', |
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'enddeclare' => 'all', |
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'endfor' => 'all', |
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'endforeach' => 'all', |
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'endif' => 'all', |
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'endswitch' => 'all', |
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'endwhile' => 'all', |
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'extends' => 'all', |
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'final' => '5.0', |
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'finally' => '5.5', |
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'for' => 'all', |
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'foreach' => 'all', |
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'function' => 'all', |
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'global' => 'all', |
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'goto' => '5.3', |
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'if' => 'all', |
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'implements' => '5.0', |
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'interface' => '5.0', |
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'instanceof' => '5.0', |
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'insteadof' => '5.4', |
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'namespace' => '5.3', |
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'new' => 'all', |
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'or' => 'all', |
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'private' => '5.0', |
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'protected' => '5.0', |
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'public' => '5.0', |
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'static' => 'all', |
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'switch' => 'all', |
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'throw' => '5.0', |
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'trait' => '5.4', |
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'try' => '5.0', |
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'use' => 'all', |
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'var' => 'all', |
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'while' => 'all', |
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'xor' => 'all', |
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'__class__' => 'all', |
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'__dir__' => '5.3', |
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'__file__' => 'all', |
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'__function__' => 'all', |
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'__method__' => 'all', |
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'__namespace__' => '5.3', |
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'bool' => '7.0', |
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'int' => '7.0', |
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'float' => '7.0', |
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'string' => '7.0', |
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'null' => '7.0', |
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'true' => '7.0', |
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'false' => '7.0', |
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'resource' => '7.0', |
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'object' => '7.0', |
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'mixed' => '7.0', |
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'numeric' => '7.0' |
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); |
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/** |
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* A list of keywords that can follow use statements. |
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* |
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* @var array(string => string) |
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*/ |
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protected $validUseNames = array( |
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'const' => true, |
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'function' => true, |
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); |
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/** |
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* targetedTokens |
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* |
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* @var array |
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*/ |
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protected $targetedTokens = array( |
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T_CLASS, |
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T_FUNCTION, |
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T_NAMESPACE, |
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T_STRING, |
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T_CONST, |
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T_USE, |
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T_AS, |
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T_EXTENDS, |
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T_TRAIT, |
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T_INTERFACE, |
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); |
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/** |
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* Returns an array of tokens this test wants to listen for. |
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* |
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* @return array |
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*/ |
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public function register() |
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{ |
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$tokens = $this->targetedTokens; |
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if (defined('T_ANON_CLASS')) { |
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$tokens[] = constant('T_ANON_CLASS'); |
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} |
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return $tokens; |
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}//end register() |
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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 |
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*/ |
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public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr) |
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{ |
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$tokens = $phpcsFile->getTokens(); |
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/** |
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* We distinguish between the class, function and namespace names or the define statements. |
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*/ |
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if ($tokens[$stackPtr]['type'] === 'T_STRING') { |
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$this->processString($phpcsFile, $stackPtr, $tokens); |
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} else { |
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$this->processNonString($phpcsFile, $stackPtr, $tokens); |
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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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* @param array $tokens The stack of tokens that make up |
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* the file. |
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* |
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* @return void |
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*/ |
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public function processNonString(PHP_CodeSniffer_File $phpcsFile, $stackPtr, $tokens) |
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{ |
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$nextNonEmpty = $phpcsFile->findNext(PHP_CodeSniffer_Tokens::$emptyTokens, ($stackPtr + 1), null, true); |
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if ($nextNonEmpty === false) { |
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return; |
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} |
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$nextContentLc = strtolower($tokens[$nextNonEmpty]['content']); |
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if (isset($this->invalidNames[$nextContentLc]) === false) { |
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return; |
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} |
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// PHP 5.6 allows for use const and use function. |
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if ($this->supportsAbove('5.6') |
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&& $tokens[$stackPtr]['type'] === 'T_USE' |
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&& isset($this->validUseNames[$nextContentLc]) === true |
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) { |
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return; |
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} |
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// Deal with anonymous classes. |
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$prevNonEmpty = $phpcsFile->findPrevious(PHP_CodeSniffer_Tokens::$emptyTokens, ($stackPtr - 1), null, true); |
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if ($prevNonEmpty !== false |
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&& $tokens[$prevNonEmpty]['type'] === 'T_NEW' |
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&& $tokens[$stackPtr]['type'] === 'T_ANON_CLASS' |
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) { |
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return; |
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} |
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View Code Duplication |
if ($this->supportsAbove($this->invalidNames[$nextContentLc])) { |
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$error = "Function name, class name, namespace name or constant name can not be reserved keyword '%s' (since version %s)"; |
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$data = array( |
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$tokens[$nextNonEmpty]['content'], |
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$this->invalidNames[$nextContentLc], |
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); |
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$phpcsFile->addError($error, $stackPtr, 'Found', $data); |
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} |
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}//end process() |
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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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* @param array $tokens The stack of tokens that make up |
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* the file. |
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* |
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* @return void |
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*/ |
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public function processString(PHP_CodeSniffer_File $phpcsFile, $stackPtr, $tokens) |
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{ |
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$tokenContentLc = strtolower($tokens[$stackPtr]['content']); |
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// Special case for 5.3 where we want to find usage of traits, but |
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// trait is not a token. |
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if ($tokenContentLc === 'trait') { |
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return $this->processNonString($phpcsFile, $stackPtr, $tokens); |
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} |
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// Look for any define/defined tokens (both T_STRING ones, blame Tokenizer). |
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if ($tokenContentLc !== 'define' && $tokenContentLc !== 'defined') { |
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return; |
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} |
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// Retrieve the define(d) constant name. |
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$firstParam = $this->getFunctionCallParameter($phpcsFile, $stackPtr, 1); |
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if ($firstParam === false) { |
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return; |
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} |
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$defineName = strtolower($firstParam['raw']); |
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$defineName = trim($defineName, '\'"'); |
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View Code Duplication |
if (isset($this->invalidNames[$defineName]) && $this->supportsAbove($this->invalidNames[$defineName])) { |
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$error = "Function name, class name, namespace name or constant name can not be reserved keyword '%s' (since PHP version %s)"; |
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$data = array( |
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$defineName, |
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$this->invalidNames[$defineName], |
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); |
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$phpcsFile->addError($error, $stackPtr, 'Found', $data); |
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} |
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}//end process() |
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}//end class |
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Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.