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src/Result.php 0000644 00000002532 15167742442 0007340 0 ustar 00 <?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);
}
src/Error.php 0000644 00000004327 15167742442 0007157 0 ustar 00 <?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;
use PhpOption\None;
use PhpOption\Some;
/**
* @template T
* @template E
*
* @extends \GrahamCampbell\ResultType\Result<T,E>
*/
final class Error extends Result
{
/**
* @var E
*/
private $value;
/**
* Internal constructor for an error value.
*
* @param E $value
*
* @return void
*/
private function __construct($value)
{
$this->value = $value;
}
/**
* Create a new error value.
*
* @template F
*
* @param F $value
*
* @return \GrahamCampbell\ResultType\Result<T,F>
*/
public static function create($value)
{
return new self($value);
}
/**
* Get the success option value.
*
* @return \PhpOption\Option<T>
*/
public function success()
{
return None::create();
}
/**
* Map over the success value.
*
* @template S
*
* @param callable(T):S $f
*
* @return \GrahamCampbell\ResultType\Result<S,E>
*/
public function map(callable $f)
{
return self::create($this->value);
}
/**
* 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>
*/
public function flatMap(callable $f)
{
/** @var \GrahamCampbell\ResultType\Result<S,F> */
return self::create($this->value);
}
/**
* Get the error option value.
*
* @return \PhpOption\Option<E>
*/
public function error()
{
return Some::create($this->value);
}
/**
* Map over the error value.
*
* @template F
*
* @param callable(E):F $f
*
* @return \GrahamCampbell\ResultType\Result<T,F>
*/
public function mapError(callable $f)
{
return self::create($f($this->value));
}
}
src/Success.php 0000644 00000004225 15167742442 0007473 0 ustar 00 <?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;
use PhpOption\None;
use PhpOption\Some;
/**
* @template T
* @template E
*
* @extends \GrahamCampbell\ResultType\Result<T,E>
*/
final class Success extends Result
{
/**
* @var T
*/
private $value;
/**
* Internal constructor for a success value.
*
* @param T $value
*
* @return void
*/
private function __construct($value)
{
$this->value = $value;
}
/**
* Create a new error value.
*
* @template S
*
* @param S $value
*
* @return \GrahamCampbell\ResultType\Result<S,E>
*/
public static function create($value)
{
return new self($value);
}
/**
* Get the success option value.
*
* @return \PhpOption\Option<T>
*/
public function success()
{
return Some::create($this->value);
}
/**
* Map over the success value.
*
* @template S
*
* @param callable(T):S $f
*
* @return \GrahamCampbell\ResultType\Result<S,E>
*/
public function map(callable $f)
{
return self::create($f($this->value));
}
/**
* 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>
*/
public function flatMap(callable $f)
{
return $f($this->value);
}
/**
* Get the error option value.
*
* @return \PhpOption\Option<E>
*/
public function error()
{
return None::create();
}
/**
* Map over the error value.
*
* @template F
*
* @param callable(E):F $f
*
* @return \GrahamCampbell\ResultType\Result<T,F>
*/
public function mapError(callable $f)
{
return self::create($this->value);
}
}
composer.json 0000644 00000001607 15167742442 0007306 0 ustar 00 {
"name": "graham-campbell/result-type",
"description": "An Implementation Of The Result Type",
"keywords": ["result", "result-type", "Result", "Result Type", "Result-Type", "Graham Campbell", "GrahamCampbell"],
"license": "MIT",
"authors": [
{
"name": "Graham Campbell",
"email": "hello@gjcampbell.co.uk",
"homepage": "https://github.com/GrahamCampbell"
}
],
"require": {
"php": "^7.2.5 || ^8.0",
"phpoption/phpoption": "^1.9.2"
},
"require-dev": {
"phpunit/phpunit": "^8.5.34 || ^9.6.13 || ^10.4.2"
},
"autoload": {
"psr-4": {
"GrahamCampbell\\ResultType\\": "src/"
}
},
"autoload-dev": {
"psr-4": {
"GrahamCampbell\\Tests\\ResultType\\": "tests/"
}
},
"config": {
"preferred-install": "dist"
}
}
LICENSE 0000644 00000002130 15167742442 0005561 0 ustar 00 The MIT License (MIT)
Copyright (c) 2020-2023 Graham Campbell <hello@gjcampbell.co.uk>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.