1<?php
2/**
3 * Squiz_Sniffs_CSS_DuplicateStyleDefinitionSniff.
4 *
5 * PHP version 5
6 *
7 * @category  PHP
8 * @package   PHP_CodeSniffer
9 * @author    Greg Sherwood <gsherwood@squiz.net>
10 * @copyright 2006-2014 Squiz Pty Ltd (ABN 77 084 670 600)
11 * @license   https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
12 * @link      http://pear.php.net/package/PHP_CodeSniffer
13 */
14
15/**
16 * Squiz_Sniffs_CSS_DuplicateStyleDefinitionSniff.
17 *
18 * Check for duplicate style definitions in the same class.
19 *
20 * @category  PHP
21 * @package   PHP_CodeSniffer
22 * @author    Greg Sherwood <gsherwood@squiz.net>
23 * @copyright 2006-2014 Squiz Pty Ltd (ABN 77 084 670 600)
24 * @license   https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
25 * @version   Release: @package_version@
26 * @link      http://pear.php.net/package/PHP_CodeSniffer
27 */
28class Squiz_Sniffs_CSS_DuplicateStyleDefinitionSniff implements PHP_CodeSniffer_Sniff
29{
30
31    /**
32     * A list of tokenizers this sniff supports.
33     *
34     * @var array
35     */
36    public $supportedTokenizers = array('CSS');
37
38
39    /**
40     * Returns the token types that this sniff is interested in.
41     *
42     * @return int[]
43     */
44    public function register()
45    {
46        return array(T_OPEN_CURLY_BRACKET);
47
48    }//end register()
49
50
51    /**
52     * Processes the tokens that this sniff is interested in.
53     *
54     * @param PHP_CodeSniffer_File $phpcsFile The file where the token was found.
55     * @param int                  $stackPtr  The position in the stack where
56     *                                        the token was found.
57     *
58     * @return void
59     */
60    public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
61    {
62        $tokens = $phpcsFile->getTokens();
63
64        // Find the content of each style definition name.
65        $styleNames = array();
66
67        $next = $stackPtr;
68        $end  = $tokens[$stackPtr]['bracket_closer'];
69
70        do {
71            $next = $phpcsFile->findNext(array(T_STYLE, T_OPEN_CURLY_BRACKET), ($next + 1), $end);
72            if ($next === false) {
73                // Class definition is empty.
74                break;
75            }
76
77            if ($tokens[$next]['code'] === T_OPEN_CURLY_BRACKET) {
78                $next = $tokens[$next]['bracket_closer'];
79                continue;
80            }
81
82            $name = $tokens[$next]['content'];
83            if (isset($styleNames[$name]) === true) {
84                $first = $styleNames[$name];
85                $error = 'Duplicate style definition found; first defined on line %s';
86                $data  = array($tokens[$first]['line']);
87                $phpcsFile->addError($error, $next, 'Found', $data);
88            } else {
89                $styleNames[$name] = $next;
90            }
91        } while ($next !== false);
92
93    }//end process()
94
95
96}//end class
97