Container::get() - Code Metrics - aidphp/di - Measure and Improve Code Quality continuously with Scrutinizer

Container::get() A
last analyzed 2019-04-12 13:11 UTC

↳ Parent: Container

Complexity

Conditions	5
Paths	7

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	11
CRAP Score	5

Importance

Changes

Metric	Value
dl	0
loc	23
ccs	11
cts	11
cp	1
rs	9.2408
c	0
b	0
f	0
cc	5
nc	7
nop	1
crap	5

<?php

namespace Aidphp\Di;

use Psr\Container\ContainerInterface;
use Psr\Container\ContainerExceptionInterface;
use ReflectionClass;
use ReflectionMethod;
use ReflectionException;

class Container implements ContainerInterface
{
    protected $definitions = [];
    protected $factories   = [];
    protected $instances   = [];

    public function define(string $id, string $class = null, array $params = [], bool $shared = true): self
    {
        unset($this->instances[$id], $this->factories[$id]);
        $this->definitions[$id] = [$class ?? $id, $params, $shared];
        return $this;
    }

    public function delegate(string $id, callable $factory, bool $shared = true): self
    {
        unset($this->instances[$id], $this->factories[$id]);
        $this->factories[$id] = [$factory, $shared];
        return $this;
    }

    public function get($id)
    {
        if (isset($this->instances[$id]))
        {
            return $this->instances[$id];
        }

        if (! isset($this->factories[$id]))
        {
            $this->factories[$id] = isset($this->definitions[$id])
                ? [$this->createFactory($this->definitions[$id][0], $this->definitions[$id][1]), $this->definitions[$id][2]]
                : [$this->createFactory($id), false];
        }

        $instance = $this->factories[$id][0]($this);

        if ($this->factories[$id][1])
        {
            $this->instances[$id] = $instance;
        }

        return $instance;
    }

    public function has($id): bool
    {
        return isset($this->instances[$id])
            || isset($this->factories[$id])
            || isset($this->definitions[$id])
            || class_exists($id);
    }

    protected function createFactory(string $class, array $params = []): callable
    {
        try
        {
            $refClass = new ReflectionClass($class);
        }
        catch (ReflectionException $e)
        {
            throw new NotFoundException($class);
        }

        if (! $refClass->isInstantiable())
        {
            throw new ContainerException('The class "' . $refClass->name . '" can not be instantiate');
        }

        if (null !== ($refMethod = $refClass->getConstructor()))
        {
            $resolver = $this->getArgsResolver($refMethod, $params);
            $factory  = function ($dic) use ($class, $resolver) {return new $class(...$resolver($dic));};
        }
        else
        {
            $factory = function ($dic) use ($class) {return new $class;};

        }

        return $factory;
    }

    protected function getArgsResolver(ReflectionMethod $method, array $params = []): callable
    {
        $paramsInfo = [];

        foreach ($method->getParameters() as $param)
        {
            $paramsInfo[] = [
                ($class = $param->getClass()) ? $class->name : null,
                $param
            ];
        }

        return function ($dic) use ($paramsInfo, $params) {
            $values = [];

            foreach ($paramsInfo as [$class, $param])
            {
                if ($class)
                {
                    try
                    {
                        $values[] = $dic->get($class);

                    }
                    catch (ContainerExceptionInterface $e)
                    {
                        if (! $param->allowsNull())

                        {
                            throw new ParameterNotFoundException($param, $e);
function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
                        }

                        $values[] = null;
                    }
                }
                elseif ($params)

                {
                    $values[] = array_shift($params);
                }
                elseif ($param->isOptional())

                {
                    $values[] = $param->isDefaultValueAvailable() ? $param->getDefaultValue() : null;

                }
                else
                {
                    throw new ParameterNotFoundException($param);
                }
            }

            return $values;
        };
    }
}

1		<?php
2
3		namespace Aidphp\Di;
4
5		use Psr\Container\ContainerInterface;
6		use Psr\Container\ContainerExceptionInterface;
7		use ReflectionClass;
8		use ReflectionMethod;
9		use ReflectionException;
10
11		class Container implements ContainerInterface
12		{
13		protected $definitions = [];
14		protected $factories = [];
15		protected $instances = [];
16
17	8	public function define(string $id, string $class = null, array $params = [], bool $shared = true): self
18		{
19	8	unset($this->instances[$id], $this->factories[$id]);
20	8	$this->definitions[$id] = [$class ?? $id, $params, $shared];
21	8	return $this;
22		}
23
24	2	public function delegate(string $id, callable $factory, bool $shared = true): self
25		{
26	2	unset($this->instances[$id], $this->factories[$id]);
27	2	$this->factories[$id] = [$factory, $shared];
28	2	return $this;
29		}
30
31	24	public function get($id)
32		{
33	24	if (isset($this->instances[$id]))
34		{
35	2	return $this->instances[$id];
36		}
37
38	24	if (! isset($this->factories[$id]))
39		{
40	23	$this->factories[$id] = isset($this->definitions[$id])
41	8	? [$this->createFactory($this->definitions[$id][0], $this->definitions[$id][1]), $this->definitions[$id][2]]
42	21	: [$this->createFactory($id), false];
43		}
44
45	19	$instance = $this->factories[$id][0]($this);
46
47	17	if ($this->factories[$id][1])
48		{
49	8	$this->instances[$id] = $instance;
50		}
51
52	17	return $instance;
53		}
54
55	15	public function has($id): bool
56		{
57	15	return isset($this->instances[$id])
58	15	\|\| isset($this->factories[$id])
59	15	\|\| isset($this->definitions[$id])
60	15	\|\| class_exists($id);
61		}
62
63	23	protected function createFactory(string $class, array $params = []): callable
64		{
65		try
66		{
67	23	$refClass = new ReflectionClass($class);
68		}
69	1	catch (ReflectionException $e)
70		{
71	1	throw new NotFoundException($class);
72		}
73
74	22	if (! $refClass->isInstantiable())
75		{
76	6	throw new ContainerException('The class "' . $refClass->name . '" can not be instantiate');
77		}
78
79	18	if (null !== ($refMethod = $refClass->getConstructor()))
80		{
81	16	$resolver = $this->getArgsResolver($refMethod, $params);
82		$factory = function ($dic) use ($class, $resolver) {return new $class(...$resolver($dic));};
83		}
84		else
85		{
86		$factory = function ($dic) use ($class) {return new $class;};
		0 ignored issues – show Unused Code introduced 2018-08-06 09:09 UTC by Report Bug Copy Issue Report The parameter `$dic` 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...
87		}
88
89	18	return $factory;
90		}
91
92	16	protected function getArgsResolver(ReflectionMethod $method, array $params = []): callable
93		{
94	16	$paramsInfo = [];
95
96	16	foreach ($method->getParameters() as $param)
97		{
98	15	$paramsInfo[] = [
99	15	($class = $param->getClass()) ? $class->name : null,
100	15	$param
101		];
102		}
103
104		return function ($dic) use ($paramsInfo, $params) {
105	16	$values = [];
106
107	16	foreach ($paramsInfo as [$class, $param])
108		{
109	15	if ($class)
110		{
111		try
112		{
113	11	$values[] = $dic->get($class);
		0 ignored issues – show Bug introduced 2018-08-06 09:09 UTC by Report Bug Copy Issue Report The variable `$class` does not exist. Did you forget to declare it? This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug. Loading history...
114		}
115	2	catch (ContainerExceptionInterface $e)
116		{
117	2	if (! $param->allowsNull())
		0 ignored issues – show Bug introduced 2018-08-06 09:09 UTC by Report Bug Copy Issue Report The variable `$param` does not exist. Did you mean `$params`? This check looks for variables that are accessed but have not been defined. It raises an issue if it finds another variable that has a similar name. The variable may have been renamed without also renaming all references. Loading history...
118		{
119	1	throw new ParameterNotFoundException($param, $e);
		0 ignored issues – show Documentation introduced 2018-08-06 09:09 UTC by Report Bug Copy Issue Report `$e` is of type `object<Psr\Container\ContainerExceptionInterface>`, but the function expects a `null\|object<Throwable>`. It seems like the type of the argument is not accepted by the function/method which you are calling. In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug. We suggest to add an explicit type cast like in the following example: function acceptsInteger($int) { } $x = '123'; // string "123" // Instead of acceptsInteger($x); // we recommend to use acceptsInteger((integer) $x); Loading history...
120		}
121
122	10	$values[] = null;
123		}
124		}
125	4	elseif ($params)
		0 ignored issues – show Bug Best Practice introduced 2018-08-06 09:09 UTC by Report Bug Copy Issue Report The expression `$params` of type `array` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `! empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
126		{
127	1	$values[] = array_shift($params);
128		}
129	3	elseif ($param->isOptional())
		0 ignored issues – show Bug introduced 2018-08-06 09:09 UTC by Report Bug Copy Issue Report The variable `$param` does not exist. Did you mean `$params`? This check looks for variables that are accessed but have not been defined. It raises an issue if it finds another variable that has a similar name. The variable may have been renamed without also renaming all references. Loading history...
130		{
131	2	$values[] = $param->isDefaultValueAvailable() ? $param->getDefaultValue() : null;
		0 ignored issues – show Bug introduced 2018-08-06 09:09 UTC by Report Bug Copy Issue Report The variable `$param` does not exist. Did you mean `$params`? This check looks for variables that are accessed but have not been defined. It raises an issue if it finds another variable that has a similar name. The variable may have been renamed without also renaming all references. Loading history...
132		}
133		else
134		{
135	1	throw new ParameterNotFoundException($param);
136		}
137		}
138
139	14	return $values;
140	16	};
141		}
142		}

aidphp / di

Container::get() A last analyzed 2019-04-12 13:11 UTC

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Container::get() A
last analyzed 2019-04-12 13:11 UTC