class DisallowAttributesJoiningSniff

class DisallowAttributesJoiningSniff implements Sniff {
    public const CODE_DISALLOWED_ATTRIBUTES_JOINING = 'DisallowedAttributesJoining';
    
    /**
     * @return array<int, (int|string)>
     */
    public function register() : array {
        return [
            T_ATTRIBUTE,
        ];
    }
    
    /**
     * @phpcsSuppress SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingNativeTypeHint
     * @param int $attributeOpenerPointer
     */
    public function process(File $phpcsFile, $attributeOpenerPointer) : void {
        if (!AttributeHelper::isValidAttribute($phpcsFile, $attributeOpenerPointer)) {
            return;
        }
        $attributes = AttributeHelper::getAttributes($phpcsFile, $attributeOpenerPointer);
        $attributeCount = count($attributes);
        if ($attributeCount === 1) {
            return;
        }
        $fix = $phpcsFile->addFixableError(sprintf('%d attributes are joined.', $attributeCount), $attributeOpenerPointer, self::CODE_DISALLOWED_ATTRIBUTES_JOINING);
        if (!$fix) {
            return;
        }
        $phpcsFile->fixer
            ->beginChangeset();
        for ($i = 1; $i < count($attributes); $i++) {
            $previousAttribute = $attributes[$i - 1];
            $attribute = $attributes[$i];
            $phpcsFile->fixer
                ->addContent($previousAttribute->getEndPointer(), ']');
            for ($j = $previousAttribute->getEndPointer() + 1; $j < $attribute->getStartPointer(); $j++) {
                if ($phpcsFile->fixer
                    ->getTokenContent($j) === ',') {
                    $phpcsFile->fixer
                        ->replaceToken($j, '');
                }
            }
            $phpcsFile->fixer
                ->addContentBefore($attribute->getStartPointer(), '#[');
        }
        $phpcsFile->fixer
            ->endChangeset();
    }

}