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<?php
declare(strict_types=1);
/*
* This file is part of Result Type.
*
* (c) Graham Campbell <hello@gjcampbell.co.uk>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace GrahamCampbell\ResultType;
/**
* @template T
* @template E
*/
abstract class Result
{
/**
* Get the success option value.
*
* @return \PhpOption\Option<T>
*/
abstract public function success();
/**
* Map over the success value.
*
* @template S
*
* @param callable(T):S $f
*
* @return \GrahamCampbell\ResultType\Result<S,E>
*/
abstract public function map(callable $f);
/**
* Flat map over the success value.
*
* @template S
* @template F
*
* @param callable(T):\GrahamCampbell\ResultType\Result<S,F> $f
*
* @return \GrahamCampbell\ResultType\Result<S,F>
*/
abstract public function flatMap(callable $f);
/**
* Get the error option value.
*
* @return \PhpOption\Option<E>
*/
abstract public function error();
/**
* Map over the error value.
*
* @template F
*
* @param callable(E):F $f
*
* @return \GrahamCampbell\ResultType\Result<T,F>
*/
abstract public function mapError(callable $f);
}
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