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<?php
/**
* Ensures that strings are not joined using the + operator.
*
* PHP version 5
*
* @category PHP
* @package PHP_CodeSniffer_MySource
* @author Greg Sherwood <gsherwood@squiz.net>
* @copyright 2006 Squiz Pty Ltd (ABN 77 084 670 600)
* @license http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
* @version CVS: $Id: JoinStringsSniff.php,v 1.1 2008/02/20 03:34:03 squiz Exp $
* @link http://pear.php.net/package/PHP_CodeSniffer
*/
/**
* Ensures that strings are not joined using the + operator.
*
* @category PHP
* @package PHP_CodeSniffer_MySource
* @author Greg Sherwood <gsherwood@squiz.net>
* @copyright 2006 Squiz Pty Ltd (ABN 77 084 670 600)
* @license http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
* @version Release: 1.1.0
* @link http://pear.php.net/package/PHP_CodeSniffer
*/
class Toba_Sniffs_PHP_JoinStringsSniff implements PHP_CodeSniffer_Sniff
{
/**
* A list of tokenizers this sniff supports.
*
* @var array
*/
public $supportedTokenizers = array('JS');
/**
* Returns an array of tokens this test wants to listen for.
*
* @return array
*/
public function register()
{
return array(
T_PLUS,
T_STRING,
);
}//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)
{
$tokens = $phpcsFile->getTokens();
if ($tokens[$stackPtr]['code'] === T_PLUS) {
$prev = $phpcsFile->findPrevious(PHP_CodeSniffer_Tokens::$emptyTokens, ($stackPtr - 1), null, true);
$next = $phpcsFile->findNext(PHP_CodeSniffer_Tokens::$emptyTokens, ($stackPtr + 1), null, true);
if ($tokens[$prev]['code'] === T_CONSTANT_ENCAPSED_STRING || $tokens[$next]['code'] === T_CONSTANT_ENCAPSED_STRING) {
$error = 'Strings must not be joined using the + operator; use [\'string\', str].join(\'\') instead';
$phpcsFile->addError($error, $stackPtr);
}
} else if ($tokens[$stackPtr]['content'] === 'join') {
$next = $phpcsFile->findNext(PHP_CodeSniffer_Tokens::$emptyTokens, ($stackPtr + 1), null, true);
if ($tokens[$next]['code'] !== T_OPEN_PARENTHESIS) {
return;
}
$prev = $phpcsFile->findPrevious(PHP_CodeSniffer_Tokens::$emptyTokens, ($stackPtr - 1), null, true);
if ($tokens[$prev]['code'] !== T_OBJECT_OPERATOR) {
return;
}
$prev = $phpcsFile->findPrevious(PHP_CodeSniffer_Tokens::$emptyTokens, ($prev - 1), null, true);
if ($tokens[$prev]['code'] !== T_CLOSE_SQUARE_BRACKET) {
return;
}
// If we get to here, we know we are looking at code like:
// ...].join(...
// So make sure a delimiter was passed to the join() function.
$next = $phpcsFile->findNext(PHP_CodeSniffer_Tokens::$emptyTokens, ($next + 1), null, true);
if ($tokens[$next]['code'] === T_CLOSE_PARENTHESIS) {
$error = 'A delimiter must be provided when joining arrays';
$phpcsFile->addError($error, $stackPtr);
}
}//end if
}//end process()
}//end class
?>
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