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✏️ Editing: ClassCommentSniff.php

<?php
/**
 * Parses and verifies the class doc comment.
 *
 * Verifies that :
 * <ul>
 *  <li>A class doc comment exists.</li>
 *  <li>The comment uses the correct docblock style.</li>
 *  <li>There are no blank lines after the class comment.</li>
 *  <li>No tags are used in the docblock.</li>
 * </ul>
 *
 * @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\Squiz\Sniffs\Commenting;

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

class ClassCommentSniff implements Sniff
{

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

}//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)
    {
        $tokens = $phpcsFile->getTokens();
        $find   = [
            T_ABSTRACT   => T_ABSTRACT,
            T_FINAL      => T_FINAL,
            T_READONLY   => T_READONLY,
            T_WHITESPACE => T_WHITESPACE,
        ];

$previousContent = null;
        for ($commentEnd = ($stackPtr - 1); $commentEnd >= 0; $commentEnd--) {
            if (isset($find[$tokens[$commentEnd]['code']]) === true) {
                continue;
            }

if ($previousContent === null) {
                $previousContent = $commentEnd;
            }

if ($tokens[$commentEnd]['code'] === T_ATTRIBUTE_END
                && isset($tokens[$commentEnd]['attribute_opener']) === true
            ) {
                $commentEnd = $tokens[$commentEnd]['attribute_opener'];
                continue;
            }

break;
        }

if ($tokens[$commentEnd]['code'] !== T_DOC_COMMENT_CLOSE_TAG
            && $tokens[$commentEnd]['code'] !== T_COMMENT
        ) {
            $class = $phpcsFile->getDeclarationName($stackPtr);
            $phpcsFile->addError('Missing doc comment for class %s', $stackPtr, 'Missing', [$class]);
            $phpcsFile->recordMetric($stackPtr, 'Class has doc comment', 'no');
            return;
        }

$phpcsFile->recordMetric($stackPtr, 'Class has doc comment', 'yes');

if ($tokens[$commentEnd]['code'] === T_COMMENT) {
            $phpcsFile->addError('You must use "/**" style comments for a class comment', $stackPtr, 'WrongStyle');
            return;
        }

if ($tokens[$previousContent]['line'] !== ($tokens[$stackPtr]['line'] - 1)) {
            $error = 'There must be no blank lines after the class comment';
            $phpcsFile->addError($error, $commentEnd, 'SpacingAfter');
        }

$commentStart = $tokens[$commentEnd]['comment_opener'];
        foreach ($tokens[$commentStart]['comment_tags'] as $tag) {
            $error = '%s tag is not allowed in class comment';
            $data  = [$tokens[$tag]['content']];
            $phpcsFile->addWarning($error, $tag, 'TagNotAllowed', $data);
        }

}//end process()

}//end class

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