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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
<?php
namespace Illuminate\Container;
use Closure;
use ReflectionMethod;
use ReflectionFunction;
use InvalidArgumentException;
class BoundMethod
{
/**
* Call the given Closure / class@method and inject its dependencies.
*
* @param \Illuminate\Container\Container $container
* @param callable|string $callback
* @param array $parameters
* @param string|null $defaultMethod
* @return mixed
*/
public static function call($container, $callback, array $parameters = [], $defaultMethod = null)
{
if (static::isCallableWithAtSign($callback) || $defaultMethod) {
return static::callClass($container, $callback, $parameters, $defaultMethod);
}
return static::callBoundMethod($container, $callback, function () use ($container, $callback, $parameters) {
return call_user_func_array(
$callback, static::getMethodDependencies($container, $callback, $parameters)
);
});
}
/**
* Call a string reference to a class using Class@method syntax.
*
* @param \Illuminate\Container\Container $container
* @param string $target
* @param array $parameters
* @param string|null $defaultMethod
* @return mixed
*
* @throws \InvalidArgumentException
*/
protected static function callClass($container, $target, array $parameters = [], $defaultMethod = null)
{
$segments = explode('@', $target);
// We will assume an @ sign is used to delimit the class name from the method
// name. We will split on this @ sign and then build a callable array that
// we can pass right back into the "call" method for dependency binding.
$method = count($segments) == 2
? $segments[1] : $defaultMethod;
if (is_null($method)) {
throw new InvalidArgumentException('Method not provided.');
}
return static::call(
$container, [$container->make($segments[0]), $method], $parameters
);
}
/**
* Call a method that has been bound to the container.
*
* @param \Illuminate\Container\Container $container
* @param callable $callback
* @param mixed $default
* @return mixed
*/
protected static function callBoundMethod($container, $callback, $default)
{
if (! is_array($callback)) {
return $default instanceof Closure ? $default() : $default;
}
// Here we need to turn the array callable into a Class@method string we can use to
// examine the container and see if there are any method bindings for this given
// method. If there are, we can call this method binding callback immediately.
$method = static::normalizeMethod($callback);
if ($container->hasMethodBinding($method)) {
return $container->callMethodBinding($method, $callback[0]);
}
return $default instanceof Closure ? $default() : $default;
}
/**
* Normalize the given callback into a Class@method string.
*
* @param callable $callback
* @return string
*/
protected static function normalizeMethod($callback)
{
$class = is_string($callback[0]) ? $callback[0] : get_class($callback[0]);
return "{$class}@{$callback[1]}";
}
/**
* Get all dependencies for a given method.
*
* @param \Illuminate\Container\Container
* @param callable|string $callback
* @param array $parameters
* @return array
*/
protected static function getMethodDependencies($container, $callback, array $parameters = [])
{
$dependencies = [];
foreach (static::getCallReflector($callback)->getParameters() as $parameter) {
static::addDependencyForCallParameter($container, $parameter, $parameters, $dependencies);
}
return array_merge($dependencies, $parameters);
}
/**
* Get the proper reflection instance for the given callback.
*
* @param callable|string $callback
* @return \ReflectionFunctionAbstract
*/
protected static function getCallReflector($callback)
{
if (is_string($callback) && strpos($callback, '::') !== false) {
$callback = explode('::', $callback);
}
return is_array($callback)
? new ReflectionMethod($callback[0], $callback[1])
: new ReflectionFunction($callback);
}
/**
* Get the dependency for the given call parameter.
*
* @param \Illuminate\Container\Container $container
* @param \ReflectionParameter $parameter
* @param array $parameters
* @param array $dependencies
* @return mixed
*/
protected static function addDependencyForCallParameter($container, $parameter,
array &$parameters, &$dependencies)
{
if (array_key_exists($parameter->name, $parameters)) {
$dependencies[] = $parameters[$parameter->name];
unset($parameters[$parameter->name]);
} elseif ($parameter->getClass()) {
$dependencies[] = $container->make($parameter->getClass()->name);
} elseif ($parameter->isDefaultValueAvailable()) {
$dependencies[] = $parameter->getDefaultValue();
}
}
/**
* Determine if the given string is in Class@method syntax.
*
* @param mixed $callback
* @return bool
*/
protected static function isCallableWithAtSign($callback)
{
return is_string($callback) && strpos($callback, '@') !== false;
}
}
|