Container::hasInstance() - Code Metrics - starweb/starlit-app - Measure and Improve Code Quality continuously with Scrutinizer

Container::hasInstance() A
last analyzed 2019-09-25 07:06 UTC

↳ Parent: Container

Complexity

Conditions	2
Paths	2

Size

Total Lines

Duplication

Lines	8
Ratio	100 %

Code Coverage

Tests	4
CRAP Score	2

Importance

Changes

Metric	Value
dl	8
loc	8
ccs	4
cts	4
cp	1
rs	10
c	0
b	0
f	0
cc	2
nc	2
nop	1
crap	2

<?php declare(strict_types=1);
/**
 * Starlit App.
 *
 * @copyright Copyright (c) 2016 Starweb AB
 * @license   BSD 3-Clause
 */

namespace Starlit\App\Container;

use Psr\Container\ContainerInterface;

class Container implements ContainerInterface
{
    /**
     * @var array
     */
    private $dicValues = [];

    /**
     * @var array
     */
    private $aliases = [];

    /**
     * @var array
     */
    private $dicObjects = [];

    /**
     * Set a DIC value.
     *
     * Wrap objects provided in a closure for lazy loading.
     *
     * @param string $key
     * @param mixed  $value
     * @return ContainerInterface
     */
    public function set(string $key, $value): ContainerInterface
    {
        if (!(\is_string($value) || \is_object($value))) {
            throw new \InvalidArgumentException('Value must be a class name, an object instance, or a callable');
        }

        $this->dicValues[$key] = $value;
        unset($this->dicObjects[$key]); // In case an object instance was stored for sharing

        return $this;
    }

    public function unset(string $key): void
    {
        unset(
            $this->dicValues[$key],
            $this->dicObjects[$key]
        );
    }

    public function alias(string $alias, string $key): ContainerInterface
    {
        $this->aliases[$alias] = $key;

        return $this;
    }

    public function unalias(string $alias): void
    {
        unset($this->aliases[$alias]);
    }

    /**
     * @inheritdoc
     */
    public function has($key): bool
    {
        if (isset($this->aliases[$key])) {
            $key = $this->aliases[$key];
        }

        return isset($this->dicValues[$key]);
    }

    public function hasInstance(string $key): bool

    {
        if (isset($this->aliases[$key])) {
            $key = $this->aliases[$key];
        }

        return isset($this->dicObjects[$key]);
    }

    /**
     * @inheritdoc
     */
    public function get($key)
    {
        if (isset($this->aliases[$key])) {
            $key = $this->aliases[$key];
        }

        // Get already instantiated object if it exist
        if (isset($this->dicObjects[$key])) {
            return $this->dicObjects[$key];
        }

        try {
            if (isset($this->dicValues[$key])) {
                $instance = $this->getValueInstance($key);
            } else {
                $instance = $this->resolveInstance($key);
            }
        } catch (\ReflectionException $e) {
            throw new NotFoundException(sprintf('Key "%s" could not be resolved.', $key));
        }

        $this->dicObjects[$key] = $instance;

        return $this->dicObjects[$key];
    }

    /**
     * Get a new instance of a DIC object
     *
     * @param string $key
     * @return mixed
     */
    public function getNew(string $key)
    {
        if (isset($this->aliases[$key])) {
            $key = $this->aliases[$key];
        }

        try {
            if (isset($this->dicValues[$key])) {
                return $this->getValueInstance($key);
            }
            return $this->resolveInstance($key);
        } catch (\ReflectionException $e) {
            throw new NotFoundException(sprintf('Key "%s" could not be resolved.', $key));
        }
    }

    private function getValueInstance(string $key)
    {
        $value = $this->dicValues[$key];
        if (\is_object($value)) {
            // Is it an invokable? (closure/anonymous function)
            if (\method_exists($value, '__invoke')) {
                return $value($this);
            }
            return $value;
        }
        return $this->resolveInstance($value);
    }

    /**
     * Destroy a DIC object instance.
     *
     * Will force a new object to be created on next call.
     *
     * @param string $key
     */
    public function destroyInstance(string $key): void

    {
        if (isset($this->aliases[$key])) {
            $key = $this->aliases[$key];
        }

        unset($this->dicObjects[$key]);
    }

    public function destroyAllInstances(): void
    {
        $this->dicObjects = [];

        // To make sure objects (like database connections) are destructed properly. PHP might not destruct objects
        // until the end of execution otherwise.
        \gc_collect_cycles();
    }

    /**
     * Magic method to get or set DIC values.
     *
     * @param string $name
     * @param array  $arguments
     * @return mixed
     */
    public function __call(string $name, array $arguments)
    {
        // getNew followed by an upper letter like getNewApple()
        if (\preg_match('/^getNew([A-Z].*)/', $name, $matches)) {
            $key = \lcfirst($matches[1]);

            return $this->getNew($key);
        } elseif (\strpos($name, 'get') === 0) {
            $key = \lcfirst(\substr($name, 3));

            return $this->get($key);
        } elseif (\strpos($name, 'set') === 0) {
            $argumentCount = count($arguments);
            if ($argumentCount !== 1) {
                throw new \BadMethodCallException("Invalid argument count[{$argumentCount}] for application {$name}()");
            }

            $key = \lcfirst(substr($name, 3));

            return $this->set($key, $arguments[0]);
        } else {
            throw new \BadMethodCallException("No application method named {$name}()");
        }
    }

    /**
     * Instantiate an object of named class, recursively resolving dependencies
     *
     * @param string $className Fully qualified class name
     * @return mixed
     * @throws \ReflectionException
     */
    private function resolveInstance(string $className)
    {
        $class = new \ReflectionClass($className);

        if (!$class->isInstantiable()) {
            throw new \ReflectionException(sprintf('Class %s cannot be instantiated', $className));
        }

        $parameterValues = [];
        if (($constructor = $class->getConstructor())) {
            $parameterValues = $this->resolveParameters(
                $constructor->getParameters()
            );
        }

        return $class->newInstanceArgs($parameterValues);
    }

    /**
     * Recursively resolve function parameters using type hints
     *
     * @param \ReflectionParameter[] $parameters
     * @param array $predefinedValues
     * @return array
     * @throws \ReflectionException
     */
    public function resolveParameters(array $parameters, array $predefinedValues = []): array
    {
        $values = [];

        /**
         * @var \ReflectionParameter $parameter
         */
        foreach ($parameters as $parameter) {
            if (\array_key_exists($parameter->getName(), $predefinedValues)) {
                if ($parameter->hasType() && $parameter->getType()->isBuiltin()) {
                    \settype($predefinedValues[$parameter->getName()], $parameter->getType()->getName());
                }
                $values[] = $predefinedValues[$parameter->getName()];
            } else {
                if (($parameterClass = $parameter->getClass())) {
                    try {
                        $values[] = $this->get($parameterClass->getName());
                    }
                    catch (NotFoundException $e) { // We're probably dealing with an unmapped interface here
                        if ($parameter->isOptional()) {
                            $values[] = $parameter->getDefaultValue();
                        } else {
                            throw $e;
                        }
                    }
                } else {
                    $values[] = $parameter->getDefaultValue();
                }
            }
        }

        return $values;
    }
}


1			<?php declare(strict_types=1);
2			/**
3			* Starlit App.
4			*
5			* @copyright Copyright (c) 2016 Starweb AB
6			* @license BSD 3-Clause
7			*/
8
9			namespace Starlit\App\Container;
10
11			use Psr\Container\ContainerInterface;
12
13			class Container implements ContainerInterface
14			{
15			/**
16			* @var array
17			*/
18			private $dicValues = [];
19
20			/**
21			* @var array
22			*/
23			private $aliases = [];
24
25			/**
26			* @var array
27			*/
28			private $dicObjects = [];
29
30			/**
31			* Set a DIC value.
32			*
33			* Wrap objects provided in a closure for lazy loading.
34			*
35			* @param string $key
36			* @param mixed $value
37			* @return ContainerInterface
38			*/
39	25		public function set(string $key, $value): ContainerInterface
40			{
41	25		if (!(\is_string($value) \|\| \is_object($value))) {
42	1		throw new \InvalidArgumentException('Value must be a class name, an object instance, or a callable');
43			}
44
45	24		$this->dicValues[$key] = $value;
46	24		unset($this->dicObjects[$key]); // In case an object instance was stored for sharing
47
48	24		return $this;
49			}
50
51	1		public function unset(string $key): void
52			{
53			unset(
54	1		$this->dicValues[$key],
55	1		$this->dicObjects[$key]
56			);
57	1		}
58
59	23		public function alias(string $alias, string $key): ContainerInterface
60			{
61	23		$this->aliases[$alias] = $key;
62
63	23		return $this;
64			}
65
66	1		public function unalias(string $alias): void
67			{
68	1		unset($this->aliases[$alias]);
69	1		}
70
71			/**
72			* @inheritdoc
73			*/
74	4		public function has($key): bool
75			{
76	4		if (isset($this->aliases[$key])) {
77	1		$key = $this->aliases[$key];
78			}
79
80	4		return isset($this->dicValues[$key]);
81			}
82
83	4	View Code Duplication	public function hasInstance(string $key): bool
			0 ignored issues – show Duplication introduced 2019-04-11 08:55 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
84			{
85	4		if (isset($this->aliases[$key])) {
86	1		$key = $this->aliases[$key];
87			}
88
89	4		return isset($this->dicObjects[$key]);
90			}
91
92			/**
93			* @inheritdoc
94			*/
95	36		public function get($key)
96			{
97	36		if (isset($this->aliases[$key])) {
98	1		$key = $this->aliases[$key];
99			}
100
101			// Get already instantiated object if it exist
102	36		if (isset($this->dicObjects[$key])) {
103	3		return $this->dicObjects[$key];
104			}
105
106			try {
107	36		if (isset($this->dicValues[$key])) {
108	25		$instance = $this->getValueInstance($key);
109			} else {
110	36		$instance = $this->resolveInstance($key);
111			}
112	4		} catch (\ReflectionException $e) {
113	4		throw new NotFoundException(sprintf('Key "%s" could not be resolved.', $key));
114			}
115
116	33		$this->dicObjects[$key] = $instance;
117
118	33		return $this->dicObjects[$key];
119			}
120
121			/**
122			* Get a new instance of a DIC object
123			*
124			* @param string $key
125			* @return mixed
126			*/
127	7		public function getNew(string $key)
128			{
129	7		if (isset($this->aliases[$key])) {
130	1		$key = $this->aliases[$key];
131			}
132
133			try {
134	7		if (isset($this->dicValues[$key])) {
135	4		return $this->getValueInstance($key);
136			}
137	3		return $this->resolveInstance($key);
138	3		} catch (\ReflectionException $e) {
139	3		throw new NotFoundException(sprintf('Key "%s" could not be resolved.', $key));
140			}
141			}
142
143	25		private function getValueInstance(string $key)
144			{
145	25		$value = $this->dicValues[$key];
146	25		if (\is_object($value)) {
147			// Is it an invokable? (closure/anonymous function)
148	24		if (\method_exists($value, '__invoke')) {
149	23		return $value($this);
150			}
151	7		return $value;
152			}
153	2		return $this->resolveInstance($value);
154			}
155
156			/**
157			* Destroy a DIC object instance.
158			*
159			* Will force a new object to be created on next call.
160			*
161			* @param string $key
162			*/
163	3	View Code Duplication	public function destroyInstance(string $key): void
			0 ignored issues – show Duplication introduced 2019-04-11 08:55 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
164			{
165	3		if (isset($this->aliases[$key])) {
166	1		$key = $this->aliases[$key];
167			}
168
169	3		unset($this->dicObjects[$key]);
170	3		}
171
172	2		public function destroyAllInstances(): void
173			{
174	2		$this->dicObjects = [];
175
176			// To make sure objects (like database connections) are destructed properly. PHP might not destruct objects
177			// until the end of execution otherwise.
178	2		\gc_collect_cycles();
179	2		}
180
181			/**
182			* Magic method to get or set DIC values.
183			*
184			* @param string $name
185			* @param array $arguments
186			* @return mixed
187			*/
188	8		public function __call(string $name, array $arguments)
189			{
190			// getNew followed by an upper letter like getNewApple()
191	8		if (\preg_match('/^getNew([A-Z].*)/', $name, $matches)) {
192	1		$key = \lcfirst($matches[1]);
193
194	1		return $this->getNew($key);
195	7		} elseif (\strpos($name, 'get') === 0) {
196	2		$key = \lcfirst(\substr($name, 3));
197
198	2		return $this->get($key);
199	6		} elseif (\strpos($name, 'set') === 0) {
200	4		$argumentCount = count($arguments);
201	4		if ($argumentCount !== 1) {
202	2		throw new \BadMethodCallException("Invalid argument count[{$argumentCount}] for application {$name}()");
203			}
204
205	2		$key = \lcfirst(substr($name, 3));
206
207	2		return $this->set($key, $arguments[0]);
208			} else {
209	2		throw new \BadMethodCallException("No application method named {$name}()");
210			}
211			}
212
213			/**
214			* Instantiate an object of named class, recursively resolving dependencies
215			*
216			* @param string $className Fully qualified class name
217			* @return mixed
218			* @throws \ReflectionException
219			*/
220	16		private function resolveInstance(string $className)
221			{
222	16		$class = new \ReflectionClass($className);
223
224	13		if (!$class->isInstantiable()) {
225	3		throw new \ReflectionException(sprintf('Class %s cannot be instantiated', $className));
226			}
227
228	10		$parameterValues = [];
229	10		if (($constructor = $class->getConstructor())) {
230	1		$parameterValues = $this->resolveParameters(
231	1		$constructor->getParameters()
232			);
233			}
234
235	10		return $class->newInstanceArgs($parameterValues);
236			}
237
238			/**
239			* Recursively resolve function parameters using type hints
240			*
241			* @param \ReflectionParameter[] $parameters
242			* @param array $predefinedValues
243			* @return array
244			* @throws \ReflectionException
245			*/
246	12		public function resolveParameters(array $parameters, array $predefinedValues = []): array
247			{
248	12		$values = [];
249
250			/**
251			* @var \ReflectionParameter $parameter
252			*/
253	12		foreach ($parameters as $parameter) {
254	12		if (\array_key_exists($parameter->getName(), $predefinedValues)) {
255	8		if ($parameter->hasType() && $parameter->getType()->isBuiltin()) {
256	6		\settype($predefinedValues[$parameter->getName()], $parameter->getType()->getName());
257			}
258	8		$values[] = $predefinedValues[$parameter->getName()];
259			} else {
260	11		if (($parameterClass = $parameter->getClass())) {
261			try {
262	10		$values[] = $this->get($parameterClass->getName());
263			}
264	2		catch (NotFoundException $e) { // We're probably dealing with an unmapped interface here
265	2		if ($parameter->isOptional()) {
266	1		$values[] = $parameter->getDefaultValue();
267			} else {
268	10		throw $e;
269			}
270			}
271			} else {
272	1		$values[] = $parameter->getDefaultValue();
273			}
274			}
275			}
276
277	11		return $values;
278			}
279			}
280

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Container::hasInstance() A last analyzed 2019-09-25 07:06 UTC

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Container::hasInstance() A
last analyzed 2019-09-25 07:06 UTC