blob: 27cd85eecb61c0878ab38e7c018ff76eca1ca947 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
<?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);
}
}
|
