Container::__construct() - Code Metrics - Inspection of "Container building to not override the entries on..." - slickframework/di - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — develop ( cf0dcd...198891 )

by Filipe

created 2017-01-05 01:28 UTC

Container::__construct() A

↳ Parent: Container

Complexity

Conditions	2
Paths	2

Size

Total Lines	8
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	2

Importance

Changes

Metric	Value
dl	0
loc	8
rs	9.4285
c	0
b	0
f	0
ccs	4
cts	4
cp	1
cc	2
eloc	5
nc	2
nop	0
crap	2

<?php

/**
 * This file is part of slick/di package
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Slick\Di;

use Interop\Container\Exception\ContainerException;
use Slick\Di\Definition\Alias;
use Slick\Di\Definition\Factory;
use Slick\Di\Definition\ObjectDefinition;
use Slick\Di\Definition\Scope;
use Slick\Di\Definition\Value;
use Slick\Di\Exception\NotFoundException;

/**
 * Container
 *
 * @package Slick\Di
 * @author  Filipe Silva <[email protected]>
 */
class Container implements ContainerInterface, ObjectHydratorAwareInterface
{
    /**
     * @var array
     */
    protected $definitions = [];

    /**
     * @var array
     */
    protected static $instances = [];

    /**
     * @var ObjectHydratorInterface
     */
    protected $hydrator;

    /**
     * @var null|ContainerInterface
     */
    protected $parent;

    /**
     * Creates a dependency container
     */
    public function __construct()
    {
        $this->parent = array_key_exists('container', self::$instances)
            ? self::$instances['container']
            : null;

        self::$instances['container'] = $this;
    }

    /**
     * Finds an entry of the container by its identifier and returns it.
     *
     * @param string $id Identifier of the entry to look for.
     *
     * @throws NotFoundException  No entry was found for this identifier.
     * @throws ContainerException Error while retrieving the entry.
     *
     * @return mixed Entry.
     */
    public function get($id)
    {
        if (!$this->has($id) && $id !== 'container') {
            throw new NotFoundException(
                "Dependency container has not found any definition for '{$id}'"
            );
        }
        return $this->resolve($id);
    }

    /**
     * Returns true if the container can return an entry for the given
     * identifier. Returns false otherwise.
     *
     * @param string $id Identifier of the entry to look for.
     *
     * @return boolean
     */
    public function has($id)
    {
        if (!array_key_exists($id, $this->definitions)) {
            return $this->parentHas($id);
        }

        return true;
    }

    /**
     * Adds a definition or a value to the container
     *
     * @param string       $name
     * @param mixed        $definition
     * @param Scope|string $scope      Resolving scope
     * @param array        $parameters Used if $value is a callable
     *
     * @return Container
     */
    public function register(
        $name,
        $definition = null,
        $scope = Scope::SINGLETON,
        array $parameters = []
    ) {
        if (!$definition instanceof DefinitionInterface) {
            $definition = $this->createDefinition(
                $definition,
                $parameters
            );
            $definition->setScope($scope);
        }
        return $this->add($name, $definition);
    }

    /**
     * Checks if parent has a provided key
     *
     * @param string $key
     *
     * @return bool
     */
    protected function parentHas($key)
    {
        if (!$this->parent) {
            return false;
        }
        return $this->parent->has($key);
    }

    /**
     * Resolves the definition that was saved under the provided name
     *
     * @param string $name
     *
     * @return mixed
     */
    protected function resolve($name)
    {
        if (array_key_exists($name, self::$instances)) {
            return self::$instances[$name];
        }

        if (array_key_exists($name, $this->definitions)) {
            $entry = $this->definitions[$name];
            return $this->registerEntry($name, $entry);
        }

        return $this->parent->get($name);
    }

    /**
     * Checks the definition scope to register resolution result
     *
     * If scope is set to prototype the the resolution result is not
     * stores in the container instances.
     *
     * @param string              $name
     * @param DefinitionInterface $definition
     * @return mixed
     */
    protected function registerEntry($name, DefinitionInterface $definition)
    {
        $value = $definition->resolve();
        if ((string) $definition->getScope() !== Scope::PROTOTYPE) {
            self::$instances[$name] = $value;
        }
        return $value;
    }

    /**
     * Adds a definition to the definitions list
     *
     * This method does not override an existing entry if the same name exists
     * in the definitions or in any definitions of its parents.
     * This way it is possible to change entries defined by other packages
     * as those are build after the main application container is build.
     * The main application container should be the first to be created and
     * therefore set any entry that will override the latest containers build.
     *
     * @param string              $name
     * @param DefinitionInterface $definition
     *
     * @return Container
     */
    protected function add($name, DefinitionInterface $definition)
    {
        if ($this->has($name)) {
            return $this;
        }

        $this->definitions[$name] = $definition;
        $definition->setContainer($this);
        return $this;
    }

    /**
     * Creates the definition for registered data
     *
     * If value is a callable then the definition is Factory, otherwise
     * it will create a Value definition.
     *
     * @see Factory, Value
     *
     * @param callable|mixed $value
     * @param array          $parameters
     *
     * @return Factory|Value
     */
    protected function createDefinition(
        $value,
        array $parameters = []
    ) {
        if (is_callable($value)) {
            return new Factory($value, $parameters);
        }
        return $this->createValueDefinition($value);
    }

    /**
     * Creates a definition for provided name and value pair
     *
     * If $value is a string prefixed with '@' it will create an Alias
     * definition. Otherwise a Value definition will be created.
     *
     * @param mixed  $value
     *
     * @return Value|Alias
     */
    protected function createValueDefinition($value)
    {
        if (is_string($value) && strpos($value, '@') !== false) {
            return new Alias($value);
        }

        return new Value($value);
    }

    /**
     * Creates an instance of provided class injecting its dependencies
     *
     * @param string $className
     * @param array ...$arguments
     *
     * @return mixed
     */
    public function make($className, ...$arguments)
    {
        if (is_a($className, ContainerInjectionInterface::class, true)) {
            return call_user_func_array([$className, 'create'], [$this]);
        }

        $definition = (new ObjectDefinition($className))
            ->setContainer($this)
        ;
        call_user_func_array([$definition, 'with'], $arguments);
        $object = $definition->resolve();
trait Idable {
    public function equalIds(Idable $other) {
        return $this->getId() === $other->getId();
    }
}
        $this->getHydrator()->hydrate($object);
        return $object;
    }

    /**
     * Set the object hydrator
     *
     * @param ObjectHydratorInterface $hydrator
     *
     * @return Container|ObjectHydratorAwareInterface
     */
    public function setHydrator(ObjectHydratorInterface $hydrator)
    {
        $this->hydrator = $hydrator;
        return $this;
    }

    /**
     * Get the object hydrator
     *
     * @return ObjectHydratorInterface
     */
    public function getHydrator()
    {
        if (!$this->hydrator) {
            $this->setHydrator(new ObjectHydrator($this));
        }
        return $this->hydrator;
    }

    /**
     * Gets the parent container if it exists
     *
     * @return null|ContainerInterface
     */
    public function parent()
    {
        return $this->parent;
    }
}


1		<?php
2
3		/**
4		* This file is part of slick/di package
5		*
6		* For the full copyright and license information, please view the LICENSE
7		* file that was distributed with this source code.
8		*/
9
10		namespace Slick\Di;
11
12		use Interop\Container\Exception\ContainerException;
13		use Slick\Di\Definition\Alias;
14		use Slick\Di\Definition\Factory;
15		use Slick\Di\Definition\ObjectDefinition;
16		use Slick\Di\Definition\Scope;
17		use Slick\Di\Definition\Value;
18		use Slick\Di\Exception\NotFoundException;
19
20		/**
21		* Container
22		*
23		* @package Slick\Di
24		* @author Filipe Silva <[email protected]>
25		*/
26		class Container implements ContainerInterface, ObjectHydratorAwareInterface
27		{
28		/**
29		* @var array
30		*/
31		protected $definitions = [];
32
33		/**
34		* @var array
35		*/
36		protected static $instances = [];
37
38		/**
39		* @var ObjectHydratorInterface
40		*/
41		protected $hydrator;
42
43		/**
44		* @var null\|ContainerInterface
45		*/
46		protected $parent;
47
48		/**
49		* Creates a dependency container
50		*/
51		public function __construct()
52		{
53		$this->parent = array_key_exists('container', self::$instances)
54	74	? self::$instances['container']
55		: null;
56	74
57	74	self::$instances['container'] = $this;
58	74	}
59	72
60	72	/**
61		* Finds an entry of the container by its identifier and returns it.
62	74	*
63	74	* @param string $id Identifier of the entry to look for.
64	74	*
65	74	* @throws NotFoundException No entry was found for this identifier.
66	74	* @throws ContainerException Error while retrieving the entry.
67		*
68		* @return mixed Entry.
69		*/
70		public function get($id)
71		{
72		if (!$this->has($id) && $id !== 'container') {
73		throw new NotFoundException(
74		"Dependency container has not found any definition for '{$id}'"
75		);
76		}
77		return $this->resolve($id);
78	52	}
79
80	52	/**
81	2	* Returns true if the container can return an entry for the given
82	2	* identifier. Returns false otherwise.
83		*
84	2	* @param string $id Identifier of the entry to look for.
85		*
86		* @return boolean
87	50	*/
88	50	public function has($id)
89	50	{
90		if (!array_key_exists($id, $this->definitions)) {
91	50	return $this->parentHas($id);
92	46	}
93	46
94		return true;
95	50	}
96
97		/**
98		* Adds a definition or a value to the container
99		*
100		* @param string $name
101		* @param mixed $definition
102		* @param Scope\|string $scope Resolving scope
103		* @param array $parameters Used if $value is a callable
104		*
105		* @return Container
106	56	*/
107		public function register(
108	56	$name,
109	28	$definition = null,
110		$scope = Scope::SINGLETON,
111		array $parameters = []
112	56	) {
113	18	if (!$definition instanceof DefinitionInterface) {
114		$definition = $this->createDefinition(
115	52	$definition,
116		$parameters
117		);
118		$definition->setScope($scope);
119		}
120		return $this->add($name, $definition);
121		}
122
123		/**
124		* Checks if parent has a provided key
125		*
126		* @param string $key
127		*
128		* @return bool
129		*/
130		protected function parentHas($key)
131		{
132		if (!$this->parent) {
133	74	return false;
134		}
135		return $this->parent->has($key);
136		}
137	74
138	72	/**
139	32	* Resolves the definition that was saved under the provided name
140	32	*
141	32	* @param string $name
142	32	*
143	32	* @return mixed
144	32	*/
145	32	protected function resolve($name)
146		{
147	72	if (array_key_exists($name, self::$instances)) {
148	72	return self::$instances[$name];
149	72	}
150	72
151		if (array_key_exists($name, $this->definitions)) {
152	72	$entry = $this->definitions[$name];
153	72	return $this->registerEntry($name, $entry);
154		}
155	72
156		return $this->parent->get($name);
157	72	}
158	72
159		/**
160		* Checks the definition scope to register resolution result
161		*
162		* If scope is set to prototype the the resolution result is not
163		* stores in the container instances.
164		*
165		* @param string $name
166		* @param DefinitionInterface $definition
167		* @return mixed
168		*/
169		protected function registerEntry($name, DefinitionInterface $definition)
170		{
171		$value = $definition->resolve();
172		if ((string) $definition->getScope() !== Scope::PROTOTYPE) {
173		self::$instances[$name] = $value;
174		}
175	10	return $value;
176		}
177
178	10	/**
179	2	* Adds a definition to the definitions list
180		*
181	2	* This method does not override an existing entry if the same name exists
182		* in the definitions or in any definitions of its parents.
183		* This way it is possible to change entries defined by other packages
184	8	* as those are build after the main application container is build.
185	4	* The main application container should be the first to be created and
186	4	* therefore set any entry that will override the latest containers build.
187		*
188	8	* @param string $name
189		* @param DefinitionInterface $definition
190		*
191		* @return Container
192		*/
193		protected function add($name, DefinitionInterface $definition)
194		{
195		if ($this->has($name)) {
196		return $this;
197		}
198	46
199		$this->definitions[$name] = $definition;
200	46	$definition->setContainer($this);
201	46	return $this;
202	46	}
203	46
204	46	/**
205	46	* Creates the definition for registered data
206	46	*
207		* If value is a callable then the definition is Factory, otherwise
208		* it will create a Value definition.
209		*
210		* @see Factory, Value
211		*
212		* @param callable\|mixed $value
213		* @param array $parameters
214		*
215		* @return Factory\|Value
216	70	*/
217		protected function createDefinition(
218	70	$value,
219	70	array $parameters = []
220		) {
221		if (is_callable($value)) {
222		return new Factory($value, $parameters);
223		}
224		return $this->createValueDefinition($value);
225		}
226
227		/**
228		* Creates a definition for provided name and value pair
229		*
230	72	* If $value is a string prefixed with '@' it will create an Alias
231		* definition. Otherwise a Value definition will be created.
232	72	*
233		* @param mixed $value
234	72	*
235		* @return Value\|Alias
236	72	*/
237	72	protected function createValueDefinition($value)
238		{
239		if (is_string($value) && strpos($value, '@') !== false) {
240		return new Alias($value);
241		}
242
243		return new Value($value);
244		}
245
246		/**
247		* Creates an instance of provided class injecting its dependencies
248		*
249		* @param string $className
250	32	* @param array ...$arguments
251		*
252		* @return mixed
253	32	*/
254		public function make($className, ...$arguments)
255	32	{
256	32	if (is_a($className, ContainerInjectionInterface::class, true)) {
257		return call_user_func_array([$className, 'create'], [$this]);
258		}
259
260		$definition = (new ObjectDefinition($className))
261		->setContainer($this)
262		;
263		call_user_func_array([$definition, 'with'], $arguments);
264		$object = $definition->resolve();
		0 ignored issues – show Bug introduced 2016-12-30 01:51 UTC by Report Bug Copy Issue Report It seems like `resolve()` must be provided by classes using this trait. How about adding it as abstract method to this trait? This check looks for methods that are used by a trait but not required by it. To illustrate, let’s look at the following code example trait Idable { public function equalIds(Idable $other) { return $this->getId() === $other->getId(); } } The trait `Idable` provides a method `equalsId` that in turn relies on the method `getId()`. If this method does not exist on a class mixing in this trait, the method will fail. Adding the `getId()` as an abstract method to the trait will make sure it is available. Loading history...
265	50	$this->getHydrator()->hydrate($object);
266		return $object;
267	50	}
268	8
269		/**
270	46	* Set the object hydrator
271		*
272		* @param ObjectHydratorInterface $hydrator
273		*
274		* @return Container\|ObjectHydratorAwareInterface
275		*/
276		public function setHydrator(ObjectHydratorInterface $hydrator)
277		{
278		$this->hydrator = $hydrator;
279	46	return $this;
280		}
281	46
282	46	/**
283		* Get the object hydrator
284	46	*
285	14	* @return ObjectHydratorInterface
286	14	*/
287	46	public function getHydrator()
288		{
289		if (!$this->hydrator) {
290		$this->setHydrator(new ObjectHydrator($this));
291		}
292		return $this->hydrator;
293		}
294
295		/**
296		* Gets the parent container if it exists
297		*
298		* @return null\|ContainerInterface
299	4	*/
300		public function parent()
301	4	{
302	4	return $this->parent;
303	4	}
304		}
305

slickframework / di

Push — develop ( cf0dcd...198891 )

Container::__construct() A

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