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✏️ Editing: CompoundNamespaceDepthSniff.php

<?php
/**
 * Verifies that compound namespaces are not defined too deep.
 *
 * @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
 */

namespace PHP_CodeSniffer\Standards\PSR12\Sniffs\Namespaces;

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

class CompoundNamespaceDepthSniff implements Sniff
{

/**
     * The max depth for compound namespaces.
     *
     * @var integer
     */
    public $maxDepth = 2;

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

}//end register()

/**
     * Processes this test, when one of its tokens is encountered.
     *
     * @param \PHP_CodeSniffer\Files\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(File $phpcsFile, $stackPtr)
    {
        $this->maxDepth = (int) $this->maxDepth;

$tokens = $phpcsFile->getTokens();

$end = $phpcsFile->findNext(T_CLOSE_USE_GROUP, ($stackPtr + 1));
        if ($end === false) {
            return;
        }

$depth = 1;
        for ($i = ($stackPtr + 1); $i <= $end; $i++) {
            if ($tokens[$i]['code'] === T_NS_SEPARATOR) {
                $depth++;
                continue;
            }

if ($i === $end || $tokens[$i]['code'] === T_COMMA) {
                // End of a namespace.
                if ($depth > $this->maxDepth) {
                    $error = 'Compound namespaces cannot have a depth more than %s';
                    $data  = [$this->maxDepth];
                    $phpcsFile->addError($error, $i, 'TooDeep', $data);
                }

$depth = 1;
            }
        }

}//end process()

}//end class

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