<?php

/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

namespace Symfony\Component\Mime\Header;

/**
* A MIME Header.
*
* @author Chris Corbyn
*/
interface HeaderInterface
{
/**
* Sets the body.
*
* The type depends on the Header concrete class.
*
* @param mixed $body
*/
public function setBody($body);

/**
* Gets the body.
*
* The return type depends on the Header concrete class.
*
* @return mixed
*/
public function getBody();

public function setCharset(string $charset);

public function getCharset(): ?string;

public function setLanguage(string $lang);

public function getLanguage(): ?string;

public function getName(): string;

public function setMaxLineLength(int $lineLength);

public function getMaxLineLength(): int;

/**
* Gets this Header rendered as a compliant string.
*/
public function toString(): string;

/**
* Gets the header's body, prepared for folding into a final header value.
*
* This is not necessarily RFC 2822 compliant since folding white space is
* not added at this stage (see {@link toString()} for that).
*/
public function getBodyAsString(): string;
}