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✏️ Editing: DuplicatePropertySniff.php

<?php
/**
 * Ensures JS classes don't contain duplicate property names.
 *
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/licence.txt BSD Licence
 *
 * @deprecated 3.9.0
 */

namespace PHP_CodeSniffer\Standards\Squiz\Sniffs\Classes;

use PHP_CodeSniffer\Files\File;
use PHP_CodeSniffer\Sniffs\DeprecatedSniff;
use PHP_CodeSniffer\Sniffs\Sniff;

class DuplicatePropertySniff implements Sniff, DeprecatedSniff
{

/**
     * A list of tokenizers this sniff supports.
     *
     * @var array
     */
    public $supportedTokenizers = ['JS'];

/**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array<int|string>
     */
    public function register()
    {
        return [T_OBJECT];

}//end register()

/**
     * Processes this test, when one of its tokens is encountered.
     *
     * @param \PHP_CodeSniffer\Files\File $phpcsFile The current file being processed.
     * @param int                         $stackPtr  The position of the current token in the
     *                                               stack passed in $tokens.
     *
     * @return void
     */
    public function process(File $phpcsFile, $stackPtr)
    {
        $tokens = $phpcsFile->getTokens();

$properties   = [];
        $wantedTokens = [
            T_PROPERTY,
            T_OBJECT,
        ];

$next = $phpcsFile->findNext($wantedTokens, ($stackPtr + 1), $tokens[$stackPtr]['bracket_closer']);
        while ($next !== false && $next < $tokens[$stackPtr]['bracket_closer']) {
            if ($tokens[$next]['code'] === T_OBJECT) {
                // Skip nested objects.
                $next = $tokens[$next]['bracket_closer'];
            } else {
                $propName = $tokens[$next]['content'];
                if (isset($properties[$propName]) === true) {
                    $error = 'Duplicate property definition found for "%s"; previously defined on line %s';
                    $data  = [
                        $propName,
                        $tokens[$properties[$propName]]['line'],
                    ];
                    $phpcsFile->addError($error, $next, 'Found', $data);
                }

$properties[$propName] = $next;
            }//end if

$next = $phpcsFile->findNext($wantedTokens, ($next + 1), $tokens[$stackPtr]['bracket_closer']);
        }//end while

}//end process()

/**
     * Provide the version number in which the sniff was deprecated.
     *
     * @return string
     */
    public function getDeprecationVersion()
    {
        return 'v3.9.0';

}//end getDeprecationVersion()

/**
     * Provide the version number in which the sniff will be removed.
     *
     * @return string
     */
    public function getRemovalVersion()
    {
        return 'v4.0.0';

}//end getRemovalVersion()

/**
     * Provide a custom message to display with the deprecation.
     *
     * @return string
     */
    public function getDeprecationMessage()
    {
        return 'Support for scanning JavaScript files will be removed completely in v4.0.0.';

}//end getDeprecationMessage()

}//end class

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