Instantiator::getInstance() - Code Metrics - Inspection of "Specify PHP 7.* versions to integrate against" - Respect/Config - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 95ab99...c92deb )

by Augusto

created 2017-12-03 09:46 UTC

Instantiator::getInstance() C

↳ Parent: Instantiator

Complexity

Conditions	14
Paths	98

Size

Total Lines	46
Code Lines	27

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	26
CRAP Score	14

Importance

Changes

Metric	Value
dl	0
loc	46
ccs	26
cts	26
cp	1
rs	5.0744
c	0
b	0
f	0
cc	14
eloc	27
nc	98
nop	1
crap	14

How to fix Complexity

<?php

namespace Respect\Config;

use ReflectionClass;

class Instantiator
{
    const MODE_DEPENDENCY = false;
    const MODE_FACTORY = 'new';

    protected $instance;
    protected $reflection;
    protected $constructor = array();
    protected $className;
    protected $params = array();
    protected $staticMethodCalls = array();
    protected $methodCalls = array();
    protected $propertySetters = array();
    protected $mode = self::MODE_DEPENDENCY;

    public function __construct($className)
    {
        if (false !== stripos($className, ' ')) {
            list($mode, $className) = explode(' ', $className, 2);
            $this->mode = $mode;
        }
        $this->reflection = new ReflectionClass($className);
        $this->constructor = $this->findConstructorParams($this->reflection);
        $this->className = $className;
    }

    public function getMode()
    {
        return $this->mode;
    }

    public function __invoke()
    {
        return call_user_func_array(array($this, 'getInstance'), func_get_args());
    }

    public function getClassName()
    {
        return $this->className;
    }

    public function getInstance($forceNew = false)
    {
        if ($this->mode == static::MODE_FACTORY) {
            $this->instance = null;
        }

        if ($this->instance && !$forceNew) {
            return $this->instance;
        }

        $className     = $this->className;
        $staticMethods = count($this->staticMethodCalls);
        foreach ($this->staticMethodCalls as $methodCalls) {
            $this->performMethodCalls(
                $className,
                $methodCalls,
                function ($result) use ($className, &$instance, $staticMethods) {
                    if ($result instanceof $className || ($staticMethods == 1 && is_object($result))) {
                        $instance = $result;
                    }
                }
            );
        }

        $constructor     = $this->reflection->getConstructor();
        $hasConstructor  = ($constructor) ? $constructor->isPublic() : false;
        if (empty($instance)) {
            if (empty($this->constructor) || !$hasConstructor) {
                $instance = new $className();
$x = 1;
$callable = function() use ($x) {
    $x = 2; // Not visible in outer scope. If you would like this, how
            // about using a different variable name than $x?
};

$callable();
var_dump($x); // integer(1)
            } else {
                $instance = $this->reflection->newInstanceArgs(
$x = 1;
$callable = function() use ($x) {
    $x = 2; // Not visible in outer scope. If you would like this, how
            // about using a different variable name than $x?
};

$callable();
var_dump($x); // integer(1)
                    $this->cleanupParams($this->constructor)
                );
            }
        }

        foreach ($this->propertySetters as $property => $value) {
            $instance->{$property} = $this->lazyLoad($value);
        }

        foreach ($this->methodCalls as $methodCalls) {
            $this->performMethodCalls($instance, $methodCalls);
        }

        return $this->instance = $instance;
    }

    public function getParam($name)
    {
        return $this->params[$name];
    }

    public function setInstance($instance)
    {
        $this->instance = $instance;
    }

    public function setParam($name, $value)
    {
        $value = $this->processValue($value);

        if ($this->matchStaticMethod($name)) {
            $this->staticMethodCalls[] = array($name, $value);
        } elseif ($this->matchConstructorParam($name)) {
            $this->constructor[$name] = $value;
        } elseif ($this->matchFullConstructor($name, $value)) {
            $this->constructor = $value;
        } elseif ($this->matchMethod($name)) {
            $this->methodCalls[] = array($name, $value);
        } else {
            $this->propertySetters[$name] = $value;
        }

        $this->params[$name] = $value;
    }

    public function getParams()
    {
        return $this->params;
    }

    protected function cleanupParams(array $params)
    {
        while (null === end($params)) {
            unset($params[key($params)]);
        }

        foreach ($params as &$p) {
            $p = $this->lazyLoad($p);
        }

        return $params;
    }

    protected function lazyLoad($value)
    {
        return $value instanceof self ? $value->getInstance() : $value;
    }

    protected function findConstructorParams(ReflectionClass $class)
    {
        $params = array();
        $constructor = $class->getConstructor();

        if (!$constructor) {
            return array();
        }

        foreach ($constructor->getParameters() as $param) {
            $params[$param->getName()] = $param->isDefaultValueAvailable() ?
                $param->getDefaultValue() : null;
        }

        return $params;
    }

    protected function processValue($value)
    {
        if (is_array($value)) {
            foreach ($value as $valueKey => $subValue) {
                $value[$valueKey] = $this->processValue($subValue);
            }
        }

        return $value;
    }

    protected function matchConstructorParam($name)
    {
        return array_key_exists($name, $this->constructor);
    }

    protected function matchFullConstructor($name, &$value)

    {
        return $name == '__construct'
        || ($name == $this->className && stripos($this->className, '\\'));
    }

    protected function matchMethod($name)
    {
        return $this->reflection->hasMethod($name);
    }

    protected function matchStaticMethod($name)
    {
        return $this->reflection->hasMethod($name)
        && $this->reflection->getMethod($name)->isStatic();
    }

    protected function performMethodCalls($class, array $methodCalls, $resultCallback = null)
    {
        list($methodName, $calls) = $methodCalls;
        $resultCallback = $resultCallback ?: function () {

        };

        foreach ($calls as $arguments) {
            if (is_array($arguments)) {
                $resultCallback(call_user_func_array(
                    array($class, $methodName),
                    $this->cleanUpParams($arguments)
                ));
            } elseif (!is_null($arguments)) {
                $resultCallback(call_user_func(array($class, $methodName), $this->lazyLoad($arguments)));
            } else {
                $resultCallback(call_user_func(array($class, $methodName)));
            }
        }
    }
}


Push — master ( 95ab99...c92deb )

Instantiator::getInstance() C

Complexity

Size

Duplication

Code Coverage

Importance

How to fix Complexity

Long Method

Change not visible in outer-scope

Change visible in outer-scope

Change not visible in outer-scope

Change visible in outer-scope

1		<?php
2
3		namespace Respect\Config;
4
5		use ReflectionClass;
6
7		class Instantiator
8		{
9		const MODE_DEPENDENCY = false;
10		const MODE_FACTORY = 'new';
11
12		protected $instance;
13		protected $reflection;
14		protected $constructor = array();
15		protected $className;
16		protected $params = array();
17		protected $staticMethodCalls = array();
18		protected $methodCalls = array();
19		protected $propertySetters = array();
20		protected $mode = self::MODE_DEPENDENCY;
21
22	32	public function __construct($className)
23		{
24	32	if (false !== stripos($className, ' ')) {
25	1	list($mode, $className) = explode(' ', $className, 2);
26	1	$this->mode = $mode;
27		}
28	32	$this->reflection = new ReflectionClass($className);
29	32	$this->constructor = $this->findConstructorParams($this->reflection);
30	32	$this->className = $className;
31	32	}
32
33	11	public function getMode()
34		{
35	11	return $this->mode;
36		}
37
38	12	public function __invoke()
39		{
40	12	return call_user_func_array(array($this, 'getInstance'), func_get_args());
41		}
42
43	3	public function getClassName()
44		{
45	3	return $this->className;
46		}
47
48	24	public function getInstance($forceNew = false)
49		{
50	24	if ($this->mode == static::MODE_FACTORY) {
51	1	$this->instance = null;
52		}
53
54	24	if ($this->instance && !$forceNew) {
55	2	return $this->instance;
56		}
57
58	24	$className = $this->className;
59	24	$staticMethods = count($this->staticMethodCalls);
60	24	foreach ($this->staticMethodCalls as $methodCalls) {
61	2	$this->performMethodCalls(
62	2	$className,
63	2	$methodCalls,
64		function ($result) use ($className, &$instance, $staticMethods) {
65	2	if ($result instanceof $className \|\| ($staticMethods == 1 && is_object($result))) {
66	2	$instance = $result;
67		}
68	2	}
69		);
70		}
71
72	24	$constructor = $this->reflection->getConstructor();
73	24	$hasConstructor = ($constructor) ? $constructor->isPublic() : false;
74	24	if (empty($instance)) {
75	22	if (empty($this->constructor) \|\| !$hasConstructor) {
76	5	$instance = new $className();
		0 ignored issues – show Bug introduced 2016-01-09 18:15 UTC by Report Bug Copy Issue Report Consider using a different name than the imported variable `$instance`, or did you forget to import by reference? It seems like you are assigning to a variable which was imported through a `use` statement which was not imported by reference. For clarity, we suggest to use a different name or import by reference depending on whether you would like to have the change visibile in outer-scope. Change not visible in outer-scope $x = 1; $callable = function() use ($x) { $x = 2; // Not visible in outer scope. If you would like this, how // about using a different variable name than $x? }; $callable(); var_dump($x); // integer(1) Change visible in outer-scope $x = 1; $callable = function() use (&$x) { $x = 2; }; $callable(); var_dump($x); // integer(2) Loading history...
77		} else {
78	17	$instance = $this->reflection->newInstanceArgs(
		0 ignored issues – show Bug introduced 2016-01-09 18:15 UTC by Report Bug Copy Issue Report Consider using a different name than the imported variable `$instance`, or did you forget to import by reference? It seems like you are assigning to a variable which was imported through a `use` statement which was not imported by reference. For clarity, we suggest to use a different name or import by reference depending on whether you would like to have the change visibile in outer-scope. Change not visible in outer-scope $x = 1; $callable = function() use ($x) { $x = 2; // Not visible in outer scope. If you would like this, how // about using a different variable name than $x? }; $callable(); var_dump($x); // integer(1) Change visible in outer-scope $x = 1; $callable = function() use (&$x) { $x = 2; }; $callable(); var_dump($x); // integer(2) Loading history...
79	17	$this->cleanupParams($this->constructor)
80		);
81		}
82		}
83
84	24	foreach ($this->propertySetters as $property => $value) {
85	6	$instance->{$property} = $this->lazyLoad($value);
86		}
87
88	24	foreach ($this->methodCalls as $methodCalls) {
89	7	$this->performMethodCalls($instance, $methodCalls);
90		}
91
92	24	return $this->instance = $instance;
93		}
94
95	4	public function getParam($name)
96		{
97	4	return $this->params[$name];
98		}
99
100	1	public function setInstance($instance)
101		{
102	1	$this->instance = $instance;
103	1	}
104
105	30	public function setParam($name, $value)
106		{
107	30	$value = $this->processValue($value);
108
109	30	if ($this->matchStaticMethod($name)) {
110	2	$this->staticMethodCalls[] = array($name, $value);
111	28	} elseif ($this->matchConstructorParam($name)) {
112	9	$this->constructor[$name] = $value;
113	21	} elseif ($this->matchFullConstructor($name, $value)) {
114	4	$this->constructor = $value;
115	17	} elseif ($this->matchMethod($name)) {
116	7	$this->methodCalls[] = array($name, $value);
117		} else {
118	11	$this->propertySetters[$name] = $value;
119		}
120
121	30	$this->params[$name] = $value;
122	30	}
123
124		public function getParams()
125		{
126		return $this->params;
127		}
128
129	20	protected function cleanupParams(array $params)
130		{
131	20	while (null === end($params)) {
132	11	unset($params[key($params)]);
133		}
134
135	20	foreach ($params as &$p) {
136	16	$p = $this->lazyLoad($p);
137		}
138
139	20	return $params;
140		}
141
142	22	protected function lazyLoad($value)
143		{
144	22	return $value instanceof self ? $value->getInstance() : $value;
145		}
146
147	32	protected function findConstructorParams(ReflectionClass $class)
148		{
149	32	$params = array();
150	32	$constructor = $class->getConstructor();
151
152	32	if (!$constructor) {
153	13	return array();
154		}
155
156	20	foreach ($constructor->getParameters() as $param) {
157	18	$params[$param->getName()] = $param->isDefaultValueAvailable() ?
158	18	$param->getDefaultValue() : null;
159		}
160
161	20	return $params;
162		}
163
164	30	protected function processValue($value)
165		{
166	30	if (is_array($value)) {
167	15	foreach ($value as $valueKey => $subValue) {
168	15	$value[$valueKey] = $this->processValue($subValue);
169		}
170		}
171
172	30	return $value;
173		}
174
175	28	protected function matchConstructorParam($name)
176		{
177	28	return array_key_exists($name, $this->constructor);
178		}
179
180	21	protected function matchFullConstructor($name, &$value)
		0 ignored issues – show Unused Code introduced 2017-12-03 09:48 UTC by Report Bug Copy Issue Report The parameter `$value` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history...
181		{
182	21	return $name == '__construct'
183	21	\|\| ($name == $this->className && stripos($this->className, '\\'));
184		}
185
186	17	protected function matchMethod($name)
187		{
188	17	return $this->reflection->hasMethod($name);
189		}
190
191	30	protected function matchStaticMethod($name)
192		{
193	30	return $this->reflection->hasMethod($name)
194	30	&& $this->reflection->getMethod($name)->isStatic();
195		}
196
197	9	protected function performMethodCalls($class, array $methodCalls, $resultCallback = null)
198		{
199	9	list($methodName, $calls) = $methodCalls;
200	9	$resultCallback = $resultCallback ?: function () {
201
202	9	};
203
204	9	foreach ($calls as $arguments) {
205	9	if (is_array($arguments)) {
206	7	$resultCallback(call_user_func_array(
207	7	array($class, $methodName),
208	7	$this->cleanUpParams($arguments)
209		));
210	2	} elseif (!is_null($arguments)) {
211	2	$resultCallback(call_user_func(array($class, $methodName), $this->lazyLoad($arguments)));
212		} else {
213	9	$resultCallback(call_user_func(array($class, $methodName)));
214		}
215		}
216	9	}
217		}
218

Respect / Config

Push — master ( 95ab99...c92deb )

Instantiator::getInstance() C

Complexity

Size

Duplication

Code Coverage

Importance

How to fix Complexity

Long Method

Change not visible in outer-scope

Change visible in outer-scope

Change not visible in outer-scope

Change visible in outer-scope

Duplication Side-by-Side

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