PHPCompatibility_Sniffs_PHP_ForbiddenNegativeBitshiftSniff

Complexity

Total Complexity

4

Size/Duplication

Total Lines	44
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	2

Importance

Changes	1
Bugs	0	Features	0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	register()	0	5	1
A	process()	0	12	3

<?php
/**
 * PHPCompatibility_Sniffs_PHP_ForbiddenNegativeBitshift.
 *
 * PHP version 7.0
 *
 * @category  PHP
 * @package   PHPCompatibility
 * @author    Wim Godden <wim@cu.be>
 */

/**
 * PHPCompatibility_Sniffs_PHP_ForbiddenNegativeBitshift.
 *
 * Bitwise shifts by negative number will throw an ArithmeticError in PHP 7.0 
 *
 * @category  PHP
 * @package   PHPCompatibility
 * @author    Wim Godden <wim@cu.be>
 */
class PHPCompatibility_Sniffs_PHP_ForbiddenNegativeBitshiftSniff extends PHPCompatibility_Sniff
{

    /**
     * If true, an error will be thrown; otherwise a warning.
     *
     * @var bool
     */
    protected $error = true;

    /**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array
     */
    public function register()
    {
        return array(T_SR);

    }//end register()

    /**
     * Processes this test, when one of its tokens is encountered.
     *
     * @param PHP_CodeSniffer_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(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
    {
        if ($this->supportsAbove('7.0')) {
            $tokens = $phpcsFile->getTokens();
            
            $nextNumber = $phpcsFile->findNext(T_LNUMBER, $stackPtr, null, false, null, true);
            if ($tokens[$nextNumber - 1]['code'] == T_MINUS) {
                $error = 'Bitwise shifts by negative number will throw an ArithmeticError in PHP 7.0';
                $phpcsFile->addError($error, $nextNumber - 1);
            }
        }
    }//end process()

}//end class