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<?php
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/**
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* PEAR_Sniffs_Functions_ValidDefaultValueSniff.
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*
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* PHP version 5
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*
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* @category PHP
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* @package PHP_CodeSniffer
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* @author Greg Sherwood <gsherwood@squiz.net>
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* @author Marc McIntyre <mmcintyre@squiz.net>
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* @copyright 2006 Squiz Pty Ltd (ABN 77 084 670 600)
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* @license http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
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aurelien |
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* @version CVS: $Id: ValidDefaultValueSniff.php 34 2009-04-09 07:34:39Z aurelien $
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* @link http://pear.php.net/package/PHP_CodeSniffer
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*/
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/**
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* PEAR_Sniffs_Functions_ValidDefaultValueSniff.
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*
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* A Sniff to ensure that parameters defined for a function that have a default
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* value come at the end of the function signature.
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*
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* @category PHP
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* @package PHP_CodeSniffer
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* @author Greg Sherwood <gsherwood@squiz.net>
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* @author Marc McIntyre <mmcintyre@squiz.net>
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* @copyright 2006 Squiz Pty Ltd (ABN 77 084 670 600)
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* @license http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
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* @version Release: 1.2.0RC1
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* @link http://pear.php.net/package/PHP_CodeSniffer
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*/
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class PEAR_Sniffs_Functions_ValidDefaultValueSniff implements PHP_CodeSniffer_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(T_FUNCTION);
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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 = $phpcsFile->getTokens();
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$argStart = $tokens[$stackPtr]['parenthesis_opener'];
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$argEnd = $tokens[$stackPtr]['parenthesis_closer'];
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// Flag for when we have found a default in our arg list.
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// If there is a value without a default after this, it is an error.
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$defaultFound = false;
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$nextArg = $argStart;
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while (($nextArg = $phpcsFile->findNext(T_VARIABLE, ($nextArg + 1), $argEnd)) !== false) {
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$argHasDefault = self::_argHasDefault($phpcsFile, $nextArg);
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if (($argHasDefault === false) && ($defaultFound === true)) {
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$error = 'Arguments with default values must be at the end';
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$error .= ' of the argument list';
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$phpcsFile->addError($error, $nextArg);
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return;
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}
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if ($argHasDefault === true) {
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$defaultFound = true;
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}
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}
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}//end process()
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/**
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* Returns true if the passed argument has a default value.
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*
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* @param PHP_CodeSniffer_File $phpcsFile The file being scanned.
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* @param int $argPtr The position of the argument
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* in the stack.
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*
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* @return bool
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*/
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private static function _argHasDefault(PHP_CodeSniffer_File $phpcsFile, $argPtr)
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{
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$tokens = $phpcsFile->getTokens();
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$nextToken = $phpcsFile->findNext(PHP_CodeSniffer_Tokens::$emptyTokens, ($argPtr + 1), null, true);
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if ($tokens[$nextToken]['code'] !== T_EQUAL) {
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return false;
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}
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return true;
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}//end _argHasDefault()
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}//end class
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?>
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