<?php
/**
 * Squiz_Sniffs_Classes_LowercaseClassKeywordsSniff.
 *
 * PHP version 5
 *
 * @category  PHP
 * @package   PHP_CodeSniffer
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @author    Marc McIntyre <mmcintyre@squiz.net>
 * @copyright 2006-2014 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
 * @link      http://pear.php.net/package/PHP_CodeSniffer
 */

/**
 * Squiz_Sniffs_Classes_LowercaseClassKeywordsSniff.
 *
 * Ensures all class keywords are lowercase.
 *
 * @category  PHP
 * @package   PHP_CodeSniffer
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @author    Marc McIntyre <mmcintyre@squiz.net>
 * @copyright 2006-2014 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
 * @version   Release: @package_version@
 * @link      http://pear.php.net/package/PHP_CodeSniffer
 */
class Squiz_Sniffs_Classes_LowercaseClassKeywordsSniff implements PHP_CodeSniffer_Sniff
{


    /**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array
     */
    public function register()
    {
        return array(
                T_CLASS,
                T_INTERFACE,
                T_TRAIT,
                T_EXTENDS,
                T_IMPLEMENTS,
                T_ABSTRACT,
                T_FINAL,
                T_VAR,
                T_CONST,
               );

    }//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();

        $content = $tokens[$stackPtr]['content'];
        if ($content !== strtolower($content)) {
            $error = '%s keyword must be lowercase; expected "%s" but found "%s"';
            $data  = array(
                      strtoupper($content),
                      strtolower($content),
                      $content,
                     );

            $fix = $phpcsFile->addFixableError($error, $stackPtr, 'FoundUppercase', $data);
            if ($fix === true) {
                $phpcsFile->fixer->replaceToken($stackPtr, strtolower($content));
            }
        }

    }//end process()


}//end class