/script/lib/PHP/CodeSniffer/Standards/Zend/Sniffs/NamingConventions/ValidVariableNameSniff.php

<?php

/**
 * Squiz_Sniffs_NamingConventions_ValidVariableNameSniff.
 *
 * PHP version 5
 *
 * @category  PHP
 * @package   PHP_CodeSniffer
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @author    Marc McIntyre <mmcintyre@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: ValidVariableNameSniff.php 261899 2008-07-02 05:08:16Z squiz $
 * @link      http://pear.php.net/package/PHP_CodeSniffer
 */



if (class_exists('PHP_CodeSniffer_Standards_AbstractVariableSniff', true) === false)

{

    throw new PHP_CodeSniffer_Exception('Class PHP_CodeSniffer_Standards_AbstractVariableSniff not found');

}



/**
 * Squiz_Sniffs_NamingConventions_ValidVariableNameSniff.
 *
 * Checks the naming of variables and member variables.
 *
 * @category  PHP
 * @package   PHP_CodeSniffer
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @author    Marc McIntyre <mmcintyre@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: 1.2.2
 * @link      http://pear.php.net/package/PHP_CodeSniffer
 */

class Zend_Sniffs_NamingConventions_ValidVariableNameSniff extends PHP_CodeSniffer_Standards_AbstractVariableSniff

{

    

    /**
     * Tokens to ignore so that we can find a DOUBLE_COLON.
     *
     * @var array
     */

    private $_ignore = array(T_WHITESPACE, T_COMMENT);



    /**
     * 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
     */

    protected function processVariable(PHP_CodeSniffer_File $phpcsFile, $stackPtr)

    {

        $tokens = $phpcsFile->getTokens();

        $varName = ltrim($tokens[$stackPtr]['content'], '$');

        

        $phpReservedVars = array('_SERVER', '_GET', '_POST', '_REQUEST', '_SESSION', '_ENV', '_COOKIE', '_FILES', 

                'GLOBALS');

        

        // If it's a php reserved var, then its ok.
        if (in_array($varName, $phpReservedVars) === true)

        {

            return;

        }

        

        $objOperator = $phpcsFile->findNext(array(T_WHITESPACE), ($stackPtr + 1), null, true);

        if ($tokens[$objOperator]['code'] === T_OBJECT_OPERATOR)

        {

            // Check to see if we are using a variable from an object.
            $var = $phpcsFile->findNext(array(T_WHITESPACE), ($objOperator + 1), null, true);

            if ($tokens[$var]['code'] === T_STRING)

            {

                // Either a var name or a function call, so check for bracket.
                $bracket = $phpcsFile->findNext(array(T_WHITESPACE), ($var + 1), null, true);

                

                if ($tokens[$bracket]['code'] !== T_OPEN_PARENTHESIS)

                {

                    $objVarName = $tokens[$var]['content'];

                    

                    // There is no way for us to know if the var is public or private,
                    // so we have to ignore a leading underscore if there is one and just
                    // check the main part of the variable name.
                    $originalVarName = $objVarName;

                    if (substr($objVarName, 0, 1) === '_')

                    {

                        $objVarName = substr($objVarName, 1);

                    }

                    

                    if (PHP_CodeSniffer :: isCamelCaps($objVarName, false, true, false) === false)

                    {

                        $error = "Variable \"$originalVarName\" is not in valid camel caps format";

                        $phpcsFile->addError($error, $var);

                    }

                    else 

                        if (preg_match('|\d|', $objVarName))

                        {

                            $warning = "Variable \"$originalVarName\" contains numbers but this is discouraged";

                            $phpcsFile->addWarning($warning, $stackPtr);

                        }

                } //end if
            } //end if
        } //end if
        



        // There is no way for us to know if the var is public or private,
        // so we have to ignore a leading underscore if there is one and just
        // check the main part of the variable name.
        $originalVarName = $varName;

        if (substr($varName, 0, 1) === '_')

        {

            $objOperator = $phpcsFile->findPrevious(array(T_WHITESPACE), ($stackPtr - 1), null, true);

            if ($tokens[$objOperator]['code'] === T_DOUBLE_COLON)

            {

                // The variable lives within a class, and is referenced like
                // this: MyClass::$_variable, so we don't know its scope.
                $inClass = true;

            }

            else

            {

                $inClass = $phpcsFile->hasCondition($stackPtr, array(T_CLASS, T_INTERFACE));

            }

            

            if ($inClass === true)

            {

                $varName = substr($varName, 1);

            }

        }

        

        if (PHP_CodeSniffer :: isCamelCaps($varName, false, true, false) === false)

        {

            $error = "Variable \"$originalVarName\" is not in valid camel caps format";

            $phpcsFile->addError($error, $stackPtr);

        }

        else 

            if (preg_match('|\d|', $varName))

            {

                $warning = "Variable \"$originalVarName\" contains numbers but this is discouraged";

                $phpcsFile->addWarning($warning, $stackPtr);

            }

    

    } //end processVariable()


    

    /**
     * Processes class member variables.
     *
     * @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
     */

    protected function processMemberVar(PHP_CodeSniffer_File $phpcsFile, $stackPtr)

    {

        $tokens = $phpcsFile->getTokens();

        

        $varName = ltrim($tokens[$stackPtr]['content'], '$');

        $memberProps = $phpcsFile->getMemberProperties($stackPtr);

        $public = ($memberProps['scope'] === 'public');

        

        if ($public === true)

        {

            if (substr($varName, 0, 1) === '_')

            {

                $error = "Public member variable \"$varName\" must not contain a leading underscore";

                $phpcsFile->addError($error, $stackPtr);

                return;

            }

        }

        else

        {

            if (substr($varName, 0, 1) !== '_')

            {

                $scope = ucfirst($memberProps['scope']);

                $error = "$scope member variable \"$varName\" must contain a leading underscore";

                $phpcsFile->addError($error, $stackPtr);

                return;

            }

        }

        

        if (PHP_CodeSniffer :: isCamelCaps($varName, false, $public, false) === false)

        {

            $error = "Variable \"$varName\" is not in valid camel caps format";

            $phpcsFile->addError($error, $stackPtr);

        }

        else 

            if (preg_match('|\d|', $varName))

            {

                $warning = "Variable \"$varName\" contains numbers but this is discouraged";

                $phpcsFile->addWarning($warning, $stackPtr);

            }

    

    } //end processMemberVar()


    

    /**
     * Processes the variable found within a double quoted string.
     *
     * @param PHP_CodeSniffer_File $phpcsFile The file being scanned.
     * @param int                  $stackPtr  The position of the double quoted
     * string.
     *
     * @return void
     */

    protected function processVariableInString(PHP_CodeSniffer_File $phpcsFile, $stackPtr)

    {

        $tokens = $phpcsFile->getTokens();

        

        $phpReservedVars = array('_SERVER', '_GET', '_POST', '_REQUEST', '_SESSION', '_ENV', '_COOKIE', '_FILES', 

                'GLOBALS');

        

        if (preg_match_all('|[^\\\]\$([a-zA-Z0-9_]+)|', $tokens[$stackPtr]['content'], $matches) !== 0)

        {

            foreach ($matches[1] as $varName)

            {

                // If it's a php reserved var, then its ok.
                if (in_array($varName, $phpReservedVars) === true)

                {

                    continue;

                }

                

                // There is no way for us to know if the var is public or private,
                // so we have to ignore a leading underscore if there is one and just
                // check the main part of the variable name.
                $originalVarName = $varName;

                if (substr($varName, 0, 1) === '_')

                {

                    if ($phpcsFile->hasCondition($stackPtr, array(T_CLASS, T_INTERFACE)) === true)

                    {

                        $varName = substr($varName, 1);

                    }

                }

                

                if (PHP_CodeSniffer :: isCamelCaps($varName, false, true, false) === false)

                {

                    $varName = $matches[0];

                    $error = "Variable \"$originalVarName\" is not in valid camel caps format";

                    $phpcsFile->addError($error, $stackPtr);

                }

                else 

                    if (preg_match('|\d|', $varName))

                    {

                        $warning = "Variable \"$originalVarName\" contains numbers but this is discouraged";

                        $phpcsFile->addWarning($warning, $stackPtr);

                    }

            }

        } //end if
    



    } //end processVariableInString()




} //end class




?>