1
|
|
|
<?php |
2
|
|
|
namespace Aerophant\Ramda; |
3
|
|
|
|
4
|
|
|
/** |
5
|
|
|
* @param mixed $data |
6
|
|
|
* @return \Closure |
7
|
|
|
*/ |
8
|
|
|
function always() |
9
|
|
|
{ |
10
|
|
|
$always = function ($data) { |
11
|
|
|
return function () use ($data) { |
12
|
|
|
return $data; |
13
|
|
|
}; |
14
|
|
|
}; |
15
|
|
|
$arguments = func_get_args(); |
16
|
|
|
$curried = curryN($always, 1); |
17
|
|
|
return call_user_func_array($curried, $arguments); |
18
|
|
|
} |
19
|
|
|
|
20
|
|
|
/** |
21
|
|
|
* @param callable $fn |
22
|
|
|
* @param array $args |
23
|
|
|
* @return string |
24
|
|
|
*/ |
25
|
|
|
function apply() |
26
|
|
|
{ |
27
|
|
|
$apply = function (callable $fn, array $args) { |
28
|
|
|
return call_user_func_array($fn, $args); |
29
|
|
|
}; |
30
|
|
|
$arguments = func_get_args(); |
31
|
|
|
$curried = curryN($apply, 2); |
32
|
|
|
return call_user_func_array($curried, $arguments); |
33
|
|
|
} |
34
|
|
|
|
35
|
|
|
/** |
36
|
|
|
* @param callable $fn |
37
|
|
|
* @param mixed ...$args |
38
|
|
|
* @return string |
39
|
|
|
*/ |
40
|
|
|
function call() |
41
|
|
|
{ |
42
|
|
|
$arguments = func_get_args(); |
43
|
|
|
$length = count($arguments); |
44
|
|
|
switch ($length) { |
45
|
|
|
case 0: |
46
|
|
|
return __FUNCTION__; |
47
|
|
|
case 1: |
48
|
|
|
$fn = $arguments[0]; |
49
|
|
|
return function (...$arguments) use ($fn) { |
|
|
|
|
50
|
|
|
return call_user_func_array($fn, $arguments); |
51
|
|
|
}; |
52
|
|
|
default: |
53
|
|
|
$fn = $arguments[0]; |
54
|
|
|
$arguments = dropFirst($arguments); |
55
|
|
|
return call_user_func_array($fn, $arguments); |
56
|
|
|
} |
57
|
|
|
} |
58
|
|
|
|
59
|
|
|
/** |
60
|
|
|
* @return callable |
61
|
|
|
* @throws \Exception |
62
|
|
|
*/ |
63
|
|
|
function compose() |
64
|
|
|
{ |
65
|
|
|
$arguments = array_reverse(func_get_args()); |
66
|
|
|
return call_user_func_array('Aerophant\Ramda\pipe', $arguments); |
67
|
|
|
} |
68
|
|
|
|
69
|
|
|
/** |
70
|
|
|
* @param string $class |
71
|
|
|
* @return \Closure |
72
|
|
|
*/ |
73
|
|
|
function construct() |
74
|
|
|
{ |
75
|
|
|
$construct = function ($class) { |
76
|
|
|
return function () use ($class) { |
77
|
|
|
return new $class(); |
78
|
|
|
}; |
79
|
|
|
}; |
80
|
|
|
$arguments = func_get_args(); |
81
|
|
|
$curried = curryN($construct, 1); |
82
|
|
|
return call_user_func_array($curried, $arguments); |
83
|
|
|
} |
84
|
|
|
|
85
|
|
|
function curryN(callable $fn, int $numberOfArguments) |
86
|
|
|
{ |
87
|
|
|
return function () use ($fn, $numberOfArguments) { |
88
|
|
|
$arguments = func_get_args(); |
89
|
|
|
$length = count($arguments); |
90
|
|
|
if ($length > $numberOfArguments) { |
91
|
|
|
throw new \InvalidArgumentException( |
92
|
|
|
"Number of passed($length) parameters is greater than expected($numberOfArguments)" |
93
|
|
|
); |
94
|
|
|
} |
95
|
|
|
// NO CURRY |
96
|
|
|
if ($length == $numberOfArguments) { |
97
|
|
|
return call_user_func_array($fn, $arguments); |
98
|
|
|
} |
99
|
|
|
// AUTO CURRY |
100
|
|
|
$curriedFn = function () use ($fn, $arguments) { |
101
|
|
|
$curriedArguments = func_get_args(); |
102
|
|
|
return call_user_func_array($fn, array_merge($arguments, $curriedArguments)); |
103
|
|
|
}; |
104
|
|
|
return curryN($curriedFn, $numberOfArguments - $length); |
105
|
|
|
}; |
106
|
|
|
} |
107
|
|
|
|
108
|
|
|
/** |
109
|
|
|
* ((a, b, c, …, n) → x) → [a, b, c, …] → ((d, e, f, …, n) → x) |
110
|
|
|
* @param callable $fn |
111
|
|
|
* @param array $args |
112
|
|
|
* @return \Closure |
113
|
|
|
*/ |
114
|
|
|
function partial(callable $fn, array $args) |
115
|
|
|
{ |
116
|
|
|
return function () use ($fn, $args) { |
117
|
|
|
$arguments = func_get_args(); |
118
|
|
|
return call_user_func_array($fn, array_merge($args, $arguments)); |
119
|
|
|
}; |
120
|
|
|
} |
121
|
|
|
|
122
|
|
|
/** |
123
|
|
|
* ((a, b, c, …, n) → x) → [d, e, f, …, n] → ((a, b, c, …) → x) |
124
|
|
|
* @param callable $fn |
125
|
|
|
* @param array $args |
126
|
|
|
* @return \Closure |
127
|
|
|
*/ |
128
|
|
|
function partialRight(callable $fn, array $args) |
129
|
|
|
{ |
130
|
|
|
return function () use ($fn, $args) { |
131
|
|
|
$arguments = func_get_args(); |
132
|
|
|
return call_user_func_array($fn, array_merge($arguments, $args)); |
133
|
|
|
}; |
134
|
|
|
} |
135
|
|
|
|
136
|
|
|
/** |
137
|
|
|
* @return callable |
138
|
|
|
* @throws \Exception |
139
|
|
|
*/ |
140
|
|
|
function pipe() |
141
|
|
|
{ |
142
|
|
|
$arguments = func_get_args(); |
143
|
|
|
$length = count($arguments); |
144
|
|
|
if ($length === 0) { |
145
|
|
|
throw new \Exception("pipe requires at least one argument"); |
146
|
|
|
} |
147
|
|
|
return function () use ($arguments) { |
148
|
|
|
$internalArguments = func_get_args(); |
149
|
|
|
$initialValue = call_user_func_array($arguments[0], $internalArguments); |
150
|
|
|
$accumulator = function ($acc, $it) { |
151
|
|
|
return call_user_func_array($it, [$acc]); |
152
|
|
|
}; |
153
|
|
|
return array_reduce(drop(0, $arguments), $accumulator, $initialValue); |
154
|
|
|
}; |
155
|
|
|
} |
156
|
|
|
|