PHPCompatibility_Sniffs_PHP_TernaryOperatorsSniff

Complexity

Total Complexity

4

Size/Duplication

Total Lines	41
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	3

2 Methods

Rating	Name	Duplication	Size	Complexity
A	register()	0	4	1
A	process()	0	18	3

<?php
/**
 * PHPCompatibility_Sniffs_PHP_TernaryOperatorsSniff.
 *
 * PHP version 5.3
 *
 * @category  PHP
 * @package   PHPCompatibility
 * @author    Ben Selby <bselby@plus.net>
 * @copyright 2012 Ben Selby
 */

/**
 * PHPCompatibility_Sniffs_PHP_TernaryOperatorsSniff.
 *
 * Performs checks on ternary operators, specifically that the middle expression
 * is not omitted for versions that don't support this.
 *
 * PHP version 5.3
 *
 * @category  PHP
 * @package   PHPCompatibility
 * @author    Ben Selby <bselby@plus.net>
 * @copyright 2012 Ben Selby
 */
class PHPCompatibility_Sniffs_PHP_TernaryOperatorsSniff extends PHPCompatibility_Sniff
{

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

    /**
     * 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('5.3')) {
            $tokens = $phpcsFile->getTokens();
        
            // Get next non-whitespace token, and check it isn't the related inline else
            // symbol, which is not allowed prior to PHP 5.3.
            $next = $phpcsFile->findNext(PHP_CodeSniffer_Tokens::$emptyTokens,
                                         ($stackPtr + 1), null, true);

            if ($tokens[$next]['code'] == T_INLINE_ELSE) {
                $error = sprintf(
                    "Middle may not be omitted from ternary operators in PHP < 5.3"
                );
                $phpcsFile->addWarning($error, $stackPtr);
            }
        }
    }
}