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<?php
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/**
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* Checks the nesting level for methods.
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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: NestingLevelSniff.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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* Checks the nesting level for methods.
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*
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* @category PHP
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* @package PHP_CodeSniffer
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* @author Johann-Peter Hartmann <hartmann@mayflower.de>
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* @author Greg Sherwood <gsherwood@squiz.net>
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* @copyright 2007 Mayflower GmbH
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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 Generic_Sniffs_Metrics_NestingLevelSniff implements PHP_CodeSniffer_Sniff
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{
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/**
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* A nesting level than this value will throw a warning.
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*
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* @var int
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*/
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protected $nestingLevel = 5;
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/**
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* A nesting level than this value will throw an error.
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*
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* @var int
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*/
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protected $absoluteNestingLevel = 10;
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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
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* in the 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 = $phpcsFile->getTokens();
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// Ignore abstract methods.
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if (isset($tokens[$stackPtr]['scope_opener']) === false) {
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return;
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}
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// Detect start and end of this function definition.
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$start = $tokens[$stackPtr]['scope_opener'];
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$end = $tokens[$stackPtr]['scope_closer'];
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$nestingLevel = 0;
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// Find the maximum nesting level of any token in the function.
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for ($i = ($start + 1); $i < $end; $i++) {
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$level = $tokens[$i]['level'];
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if ($nestingLevel < $level) {
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$nestingLevel = $level;
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}
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}
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// We subtract the nesting level of the function itself.
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$nestingLevel = ($nestingLevel - $tokens[$stackPtr]['level'] - 1);
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if ($nestingLevel > $this->absoluteNestingLevel) {
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$error = "Function's nesting level ($nestingLevel) exceeds allowed maximum of ".$this->absoluteNestingLevel;
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$phpcsFile->addError($error, $stackPtr);
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} else if ($nestingLevel > $this->nestingLevel) {
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$warning = "Function's nesting level ($nestingLevel) exceeds ".$this->nestingLevel.'; consider refactoring the function';
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$phpcsFile->addWarning($warning, $stackPtr);
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}
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}//end process()
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}//end class
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?>
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