Container::make() - Code Metrics - Inspection of "Merge branch 'dev'" - codeburnerframework/container - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( a9d323...e2a001 )

by Alex

created 2016-12-13 16:33 UTC

Container::make() A

↳ Parent: Container

Complexity

Conditions	4
Paths	4

Size

Total Lines	16
Code Lines	9

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	8
CRAP Score	4

Importance

Changes	4
Bugs	0	Features	0

Metric	Value
c	4
b	0
f	0
dl	0
loc	16
ccs	8
cts	8
cp	1
rs	9.2
cc	4
eloc	9
nc	4
nop	2
crap	4

<?php

/**
 * Codeburner Framework.
 *
 * @author Alex Rohleder <[email protected]>
 * @copyright 2015 Alex Rohleder
 * @license http://opensource.org/licenses/MIT
 */

namespace Codeburner\Container;

use Closure, Exception, ReflectionClass, ReflectionException, ReflectionFunction, ReflectionParameter;
use Psr\Container\ContainerInterface;
use Codeburner\Container\Exceptions\{ContainerException, NotFoundException};

/**
 * The container class is reponsable to construct all objects
 * of the project automatically, with total abstraction of dependencies.
 *
 * @author Alex Rohleder <[email protected]>
 * @version 1.0.0
 */

class Container implements ContainerInterface
{

    /**
     * Holds all resolved or resolvable instances into the container.
     *
     * @var array
     */

    protected $collection;

    /**
     * Class specific defined dependencies.
     *
     * @var array
     */

    protected $dependencies;

    /**
     * Cache of classes inspector and resolver.
     *
     * @var array
     */

    protected $resolving;

    /**
     * Cache of classes dependencies in callbacks ready for resolution.
     *
     * @var array
     */

    protected $resolved;

    /**
     * Call a user function injecting the dependencies.
     *
     * @param string|Closure $function   The function or the user function name.
     * @param array          $parameters The predefined dependencies.
     *
     * @return mixed
     */

    public function call($function, array $parameters = [])
    {
        $inspector = new ReflectionFunction($function);

        $dependencies = $inspector->getParameters();
        $dependencies = $this->process('', $parameters, $dependencies);

        return call_user_func_array($function, $dependencies);
    }

    /**
     * Makes an element or class injecting automatically all the dependencies.
     *
     * @param string $abstract   The class name or container element name to make.
     * @param array  $parameters Specific parameters definition.
     *
     * @throws ContainerException
     * @return object|null
     */

    public function make(string $abstract, array $parameters = [])
    {
        if (isset($this->collection[$abstract])) {
            return $this->get($abstract);
        }

        if (isset($this->resolving[$abstract])) {
            return $this->resolving[$abstract]($abstract, $parameters);
        }

        try {
            return ($this->resolving[$abstract] = $this->construct($abstract))($abstract, $parameters);
        } catch (ReflectionException $e) {
            throw new ContainerException("Fail while attempt to make '$abstract'", 0, $e);
        }
    }

    /**
     * Construct a class and all the dependencies using the reflection library of PHP.
     *
     * @param string $abstract The class name or container element name to make.
     *
     * @throws ReflectionException
     * @return Closure
     */

    protected function construct(string $abstract) : Closure
    {
        $inspector = new ReflectionClass($abstract);

        if (($constructor = $inspector->getConstructor()) && ($dependencies = $constructor->getParameters())) {
            return function (string $abstract, array $parameters) use ($inspector, $dependencies) {
                return $inspector->newInstanceArgs(
                    $this->process($abstract, $parameters, $dependencies)
                );
            };
        }

        return function (string $abstract) {
            return new $abstract;
        };
    }

    /**
     * Process all dependencies
     *
     * @param string $abstract     The class name or container element name to make
     * @param array  $parameters   User defined parameters that must be used instead of resolved ones
     * @param array  $dependencies Array of ReflectionParameter
     *
     * @throws ContainerException When a dependency cannot be solved.
     * @return array
     */

    protected function process(string $abstract, array $parameters, array $dependencies) : array
    {
        foreach ($dependencies as &$dependency) {
            if (isset($parameters[$dependency->name])) {
                   $dependency = $parameters[$dependency->name];
            } else $dependency = $this->resolve($abstract, $dependency);
        }

        return $dependencies;
    }

    /**
     * Resolve all the given class reflected dependencies.
     *
     * @param string               $abstract   The class name or container element name to resolve dependencies.
     * @param ReflectionParameter  $dependency The class dependency to be resolved.
     *
     * @throws ContainerException When a dependency cannot be solved.
     * @return Object
     */

    protected function resolve(string $abstract, ReflectionParameter $dependency)
    {
        $key = $abstract.$dependency->name;

        if (! isset($this->resolved[$key])) {
            $this->resolved[$key] = $this->generate($abstract, $dependency);
        }

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

    /**
     * Generate the dependencies callbacks to jump some conditions in every dependency creation.
     *
     * @param string               $abstract   The class name or container element name to resolve dependencies.
     * @param ReflectionParameter  $dependency The class dependency to be resolved.
     *
     * @throws ContainerException When a dependency cannot be solved.
     * @return Closure
     */

    protected function generate(string $abstract, ReflectionParameter $dependency) : Closure
    {
        if ($class = $dependency->getClass()) {
            $classname = $class->name;
            $key = $abstract.$classname;

            if (isset($this->dependencies[$key])) {
                return $this->dependencies[$key];
            }

            return function () use ($classname) {
                return $this->make($classname);
            };
        }

        try {
            $value = $dependency->getDefaultValue();

            return function () use ($value) {
                return $value;
            };
        } catch (ReflectionException $e) {
            throw new ContainerException("Cannot resolve '" . $dependency->name . "' of '$abstract'", 0, $e);
        }
    }

    /**
     * Reset the container, removing all the elements, cache and options.
     *
     * @return self
     */

    public function flush() : self
    {
        $this->collection = [];
        $this->dependencies = [];
        $this->resolving = [];
        $this->resolved = [];

        return $this;
    }

    /**
     * Finds an entry of the container by its identifier and returns it.
     *
     * @param string $abstract Identifier of the entry to look for.
     *
     * @throws NotFoundException  No entry was found for this identifier.
     * @throws ContainerException Error while retrieving the entry.
     *
     * @return mixed Entry.
     */
    public function get($abstract)
    {
        if (! isset($this->collection[$abstract])) {
            throw new NotFoundException("Element '$abstract' not found");
        }

        if ($this->collection[$abstract] instanceof Closure) {
            try {
                return $this->collection[$abstract]($this);
            } catch (Exception $e) {
                throw new ContainerException("An exception was thrown while attempt to make $abstract", 0, $e);
            }
        }

        return $this->collection[$abstract];
    }

    /**
     * Returns true if the container can return an entry for the given identifier.
     * Returns false otherwise.
     *
     * `has($abstract)` returning true does not mean that `get($abstract)` will not throw an exception.
     * It does however mean that `get($abstract)` will not throw a `NotFoundException`.
     *
     * @param string $abstract Identifier of the entry to look for.
     *
     * @return boolean
     */

    public function has($abstract)
    {
        return isset($this->collection[$abstract]);
    }

    /**
     * Verify if an element has a singleton instance.
     *
     * @param  string The class name or container element name to resolve dependencies.
     * @return bool
     */

    public function isSingleton(string $abstract) : bool
    {
        return isset($this->collection[$abstract]) && $this->collection[$abstract] instanceof Closure === false;
    }

    /**
     * Verify if an element is a instance of something.
     *
     * @param  string The class name or container element name to resolve dependencies.
     * @return bool
     */
    public function isInstance(string $abstract) : bool
    {
        return isset($this->collection[$abstract]) && is_object($this->collection[$abstract]);
    }

    /**
     * Bind a new element to the container.
     *
     * @param string                $abstract The alias name that will be used to call the element.
     * @param string|closure|object $concrete The element class name, or an closure that makes the element, or the object itself.
     * @param bool                  $shared   Define if the element will be a singleton instance.
     *
     * @return self
     */

    public function set(string $abstract, $concrete, bool $shared = false) : self
    {
        if (is_object($concrete)) {
            return $this->instance($abstract, $concrete);
        }

        if ($concrete instanceof Closure === false) {
            $concrete = function (Container $container) use ($concrete) {
                return $container->make($concrete);
            };
        }

        if ($shared === true) {
               $this->collection[$abstract] = $concrete($this);
        } else $this->collection[$abstract] = $concrete;

        return $this;
    }

    /**
     * Bind a new element to the container IF the element name not exists in the container.
     *
     * @param string         $abstract The alias name that will be used to call the element.
     * @param string|closure $concrete The element class name, or an closure that makes the element.
     * @param bool           $shared   Define if the element will be a singleton instance.
     *
     * @return self
     */

    public function setIf(string $abstract, $concrete, bool $shared = false) : self
    {
        if (! isset($this->collection[$abstract])) {
            $this->set($abstract, $concrete, $shared);
        }

        return $this;
    }

    /**
     * Bind an specific instance to a class dependency.
     *
     * @param string         $class          The class full name.
     * @param string         $dependencyName The dependency full name.
     * @param string|closure $dependency     The specific object class name or a classure that makes the element.
     *
     * @return self
     */

    public function setTo(string $class, string $dependencyName, $dependency) : self
    {
        if ($dependency instanceof Closure === false) {
            if (is_object($dependency)) {
                $dependency = function () use ($dependency) {
                    return $dependency;
                };
            } else {
                $dependency = function () use ($dependency) {
                    return $this->get($dependency);
                };
            }
        }

        $this->dependencies[$class.$dependencyName] = $dependency;

        return $this;
    }

    /**
     * Bind an element that will be construct only one time, and every call for the element,
     * the same instance will be given.
     *
     * @param string         $abstract The alias name that will be used to call the element.
     * @param string|closure $concrete The element class name, or an closure that makes the element.
     *
     * @return self
     */

    public function singleton(string $abstract, $concrete) : self
    {
        $this->set($abstract, $concrete, true);

        return $this;
    }

    /**
     * Bind an object to the container.
     *
     * @param string $abstract The alias name that will be used to call the object.
     * @param object $instance The object that will be inserted.
     *
     * @throws ContainerException When $instance is not an object.
     * @return self
     */

    public function instance(string $abstract, $instance) : self
    {
        if (! is_object($instance)) {
            throw new ContainerException('Trying to store ' . gettype($type) . ' as object.');
        }

        $this->collection[$abstract] = $instance;

        return $this;
    }

    /**
     * Modify an element with a given function that receive the old element as argument.
     *
     * @param string  $abstract  The alias name that will be used to call the element.
     * @param closure $extension The function that receives the old element and return a new or modified one.
     *
     * @throws NotFoundException  When no element was found with $abstract key.
     * @return self
     */

    public function extend(string $abstract, closure $extension) : self
    {
        if (! isset($this->collection[$abstract])) {
            throw new NotFoundException($abstract);
        }

        $object = $this->collection[$abstract];

        if ($object instanceof Closure) {
            $this->collection[$abstract] = function () use ($object, $extension) {
                return $extension($object($this), $this);
            };
        } else {
            $this->collection[$abstract] = $extension($object, $this);
        }

        return $this;
    }

    /**
     * Makes an resolvable element an singleton.
     *
     * @param  string $abstract The alias name that will be used to call the element.
     *
     * @throws NotFoundException  When no element was found with $abstract key.
     * @throws ContainerException When the element on $abstract key is not resolvable.
     *
     * @return self
     */

    public function share(string $abstract) : self
    {
        if (! isset($this->collection[$abstract])) {
            throw new NotFoundException("Element '$abstract' not found");
        }

        if (! $this->collection[$abstract] instanceof Closure) {
            throw new ContainerException("'$abstract' must be a resolvable element");
        }

        $this->collection[$abstract] = $this->collection[$abstract]($this);

        return $this;
    }

}


1		<?php
2
3		/**
4		* Codeburner Framework.
5		*
6		* @author Alex Rohleder <[email protected]>
7		* @copyright 2015 Alex Rohleder
8		* @license http://opensource.org/licenses/MIT
9		*/
10
11		namespace Codeburner\Container;
12
13		use Closure, Exception, ReflectionClass, ReflectionException, ReflectionFunction, ReflectionParameter;
14		use Psr\Container\ContainerInterface;
15		use Codeburner\Container\Exceptions\{ContainerException, NotFoundException};
16
17		/**
18		* The container class is reponsable to construct all objects
19		* of the project automatically, with total abstraction of dependencies.
20		*
21		* @author Alex Rohleder <[email protected]>
22		* @version 1.0.0
23		*/
24
25		class Container implements ContainerInterface
26		{
27
28		/**
29		* Holds all resolved or resolvable instances into the container.
30		*
31		* @var array
32		*/
33
34		protected $collection;
35
36		/**
37		* Class specific defined dependencies.
38		*
39		* @var array
40		*/
41
42		protected $dependencies;
43
44		/**
45		* Cache of classes inspector and resolver.
46		*
47		* @var array
48		*/
49
50		protected $resolving;
51
52		/**
53		* Cache of classes dependencies in callbacks ready for resolution.
54		*
55		* @var array
56		*/
57
58		protected $resolved;
59
60		/**
61		* Call a user function injecting the dependencies.
62		*
63		* @param string\|Closure $function The function or the user function name.
64		* @param array $parameters The predefined dependencies.
65		*
66		* @return mixed
67		*/
68
69	3	public function call($function, array $parameters = [])
70		{
71	3	$inspector = new ReflectionFunction($function);
72
73	3	$dependencies = $inspector->getParameters();
74	3	$dependencies = $this->process('', $parameters, $dependencies);
75
76	3	return call_user_func_array($function, $dependencies);
77		}
78
79		/**
80		* Makes an element or class injecting automatically all the dependencies.
81		*
82		* @param string $abstract The class name or container element name to make.
83		* @param array $parameters Specific parameters definition.
84		*
85		* @throws ContainerException
86		* @return object\|null
87		*/
88
89	18	public function make(string $abstract, array $parameters = [])
90		{
91	18	if (isset($this->collection[$abstract])) {
92	2	return $this->get($abstract);
93		}
94
95	18	if (isset($this->resolving[$abstract])) {
96	3	return $this->resolving[$abstract]($abstract, $parameters);
97		}
98
99		try {
100	18	return ($this->resolving[$abstract] = $this->construct($abstract))($abstract, $parameters);
101	1	} catch (ReflectionException $e) {
102	1	throw new ContainerException("Fail while attempt to make '$abstract'", 0, $e);
103		}
104		}
105
106		/**
107		* Construct a class and all the dependencies using the reflection library of PHP.
108		*
109		* @param string $abstract The class name or container element name to make.
110		*
111		* @throws ReflectionException
112		* @return Closure
113		*/
114
115	18	protected function construct(string $abstract) : Closure
116		{
117	18	$inspector = new ReflectionClass($abstract);
118
119	17	if (($constructor = $inspector->getConstructor()) && ($dependencies = $constructor->getParameters())) {
120		return function (string $abstract, array $parameters) use ($inspector, $dependencies) {
121	7	return $inspector->newInstanceArgs(
122	7	$this->process($abstract, $parameters, $dependencies)
123		);
124	7	};
125		}
126
127		return function (string $abstract) {
128	15	return new $abstract;
129	15	};
130		}
131
132		/**
133		* Process all dependencies
134		*
135		* @param string $abstract The class name or container element name to make
136		* @param array $parameters User defined parameters that must be used instead of resolved ones
137		* @param array $dependencies Array of ReflectionParameter
138		*
139		* @throws ContainerException When a dependency cannot be solved.
140		* @return array
141		*/
142
143	9	protected function process(string $abstract, array $parameters, array $dependencies) : array
144		{
145	9	foreach ($dependencies as &$dependency) {
146	8	if (isset($parameters[$dependency->name])) {
147	1	$dependency = $parameters[$dependency->name];
148	8	} else $dependency = $this->resolve($abstract, $dependency);
149		}
150
151	9	return $dependencies;
152		}
153
154		/**
155		* Resolve all the given class reflected dependencies.
156		*
157		* @param string $abstract The class name or container element name to resolve dependencies.
158		* @param ReflectionParameter $dependency The class dependency to be resolved.
159		*
160		* @throws ContainerException When a dependency cannot be solved.
161		* @return Object
162		*/
163
164	7	protected function resolve(string $abstract, ReflectionParameter $dependency)
165		{
166	7	$key = $abstract.$dependency->name;
167
168	7	if (! isset($this->resolved[$key])) {
169	7	$this->resolved[$key] = $this->generate($abstract, $dependency);
170		}
171
172	7	return $this->resolved[$key]($this);
173		}
174
175		/**
176		* Generate the dependencies callbacks to jump some conditions in every dependency creation.
177		*
178		* @param string $abstract The class name or container element name to resolve dependencies.
179		* @param ReflectionParameter $dependency The class dependency to be resolved.
180		*
181		* @throws ContainerException When a dependency cannot be solved.
182		* @return Closure
183		*/
184
185	7	protected function generate(string $abstract, ReflectionParameter $dependency) : Closure
186		{
187	7	if ($class = $dependency->getClass()) {
188	7	$classname = $class->name;
189	7	$key = $abstract.$classname;
190
191	7	if (isset($this->dependencies[$key])) {
192	3	return $this->dependencies[$key];
193		}
194
195		return function () use ($classname) {
196	4	return $this->make($classname);
197	4	};
198		}
199
200		try {
201		$value = $dependency->getDefaultValue();
202
203		return function () use ($value) {
204		return $value;
205		};
206		} catch (ReflectionException $e) {
207		throw new ContainerException("Cannot resolve '" . $dependency->name . "' of '$abstract'", 0, $e);
208		}
209		}
210
211		/**
212		* Reset the container, removing all the elements, cache and options.
213		*
214		* @return self
215		*/
216
217	1	public function flush() : self
218		{
219	1	$this->collection = [];
220	1	$this->dependencies = [];
221	1	$this->resolving = [];
222	1	$this->resolved = [];
223
224	1	return $this;
225		}
226
227		/**
228		* Finds an entry of the container by its identifier and returns it.
229		*
230		* @param string $abstract Identifier of the entry to look for.
231		*
232		* @throws NotFoundException No entry was found for this identifier.
233		* @throws ContainerException Error while retrieving the entry.
234		*
235		* @return mixed Entry.
236		*/
237	6	public function get($abstract)
238		{
239	6	if (! isset($this->collection[$abstract])) {
240		throw new NotFoundException("Element '$abstract' not found");
241		}
242
243	6	if ($this->collection[$abstract] instanceof Closure) {
244		try {
245	3	return $this->collection[$abstract]($this);
246		} catch (Exception $e) {
247		throw new ContainerException("An exception was thrown while attempt to make $abstract", 0, $e);
248		}
249		}
250
251	3	return $this->collection[$abstract];
252		}
253
254		/**
255		* Returns true if the container can return an entry for the given identifier.
256		* Returns false otherwise.
257		*
258		* `has($abstract)` returning true does not mean that `get($abstract)` will not throw an exception.
259		* It does however mean that `get($abstract)` will not throw a `NotFoundException`.
260		*
261		* @param string $abstract Identifier of the entry to look for.
262		*
263		* @return boolean
264		*/
265
266	2	public function has($abstract)
267		{
268	2	return isset($this->collection[$abstract]);
269		}
270
271		/**
272		* Verify if an element has a singleton instance.
273		*
274		* @param string The class name or container element name to resolve dependencies.
275		* @return bool
276		*/
277
278	5	public function isSingleton(string $abstract) : bool
279		{
280	5	return isset($this->collection[$abstract]) && $this->collection[$abstract] instanceof Closure === false;
281		}
282
283		/**
284		* Verify if an element is a instance of something.
285		*
286		* @param string The class name or container element name to resolve dependencies.
287		* @return bool
288		*/
289		public function isInstance(string $abstract) : bool
290		{
291		return isset($this->collection[$abstract]) && is_object($this->collection[$abstract]);
292		}
293
294		/**
295		* Bind a new element to the container.
296		*
297		* @param string $abstract The alias name that will be used to call the element.
298		* @param string\|closure\|object $concrete The element class name, or an closure that makes the element, or the object itself.
299		* @param bool $shared Define if the element will be a singleton instance.
300		*
301		* @return self
302		*/
303
304	12	public function set(string $abstract, $concrete, bool $shared = false) : self
305		{
306	12	if (is_object($concrete)) {
307	1	return $this->instance($abstract, $concrete);
308		}
309
310	11	if ($concrete instanceof Closure === false) {
311		$concrete = function (Container $container) use ($concrete) {
312	8	return $container->make($concrete);
313	11	};
314		}
315
316	11	if ($shared === true) {
317	5	$this->collection[$abstract] = $concrete($this);
318	6	} else $this->collection[$abstract] = $concrete;
319
320	11	return $this;
321		}
322
323		/**
324		* Bind a new element to the container IF the element name not exists in the container.
325		*
326		* @param string $abstract The alias name that will be used to call the element.
327		* @param string\|closure $concrete The element class name, or an closure that makes the element.
328		* @param bool $shared Define if the element will be a singleton instance.
329		*
330		* @return self
331		*/
332
333	1	public function setIf(string $abstract, $concrete, bool $shared = false) : self
334		{
335	1	if (! isset($this->collection[$abstract])) {
336	1	$this->set($abstract, $concrete, $shared);
337		}
338
339	1	return $this;
340		}
341
342		/**
343		* Bind an specific instance to a class dependency.
344		*
345		* @param string $class The class full name.
346		* @param string $dependencyName The dependency full name.
347		* @param string\|closure $dependency The specific object class name or a classure that makes the element.
348		*
349		* @return self
350		*/
351
352	3	public function setTo(string $class, string $dependencyName, $dependency) : self
353		{
354	3	if ($dependency instanceof Closure === false) {
355	2	if (is_object($dependency)) {
356		$dependency = function () use ($dependency) {
357	2	return $dependency;
358	2	};
359		} else {
360		$dependency = function () use ($dependency) {
361		return $this->get($dependency);
362		};
363		}
364		}
365
366	3	$this->dependencies[$class.$dependencyName] = $dependency;
367
368	3	return $this;
369		}
370
371		/**
372		* Bind an element that will be construct only one time, and every call for the element,
373		* the same instance will be given.
374		*
375		* @param string $abstract The alias name that will be used to call the element.
376		* @param string\|closure $concrete The element class name, or an closure that makes the element.
377		*
378		* @return self
379		*/
380
381	3	public function singleton(string $abstract, $concrete) : self
382		{
383	3	$this->set($abstract, $concrete, true);
384
385	3	return $this;
386		}
387
388		/**
389		* Bind an object to the container.
390		*
391		* @param string $abstract The alias name that will be used to call the object.
392		* @param object $instance The object that will be inserted.
393		*
394		* @throws ContainerException When $instance is not an object.
395		* @return self
396		*/
397
398	2	public function instance(string $abstract, $instance) : self
399		{
400	2	if (! is_object($instance)) {
401		throw new ContainerException('Trying to store ' . gettype($type) . ' as object.');
402		}
403
404	2	$this->collection[$abstract] = $instance;
405
406	2	return $this;
407		}
408
409		/**
410		* Modify an element with a given function that receive the old element as argument.
411		*
412		* @param string $abstract The alias name that will be used to call the element.
413		* @param closure $extension The function that receives the old element and return a new or modified one.
414		*
415		* @throws NotFoundException When no element was found with $abstract key.
416		* @return self
417		*/
418
419	2	public function extend(string $abstract, closure $extension) : self
420		{
421	2	if (! isset($this->collection[$abstract])) {
422		throw new NotFoundException($abstract);
423		}
424
425	2	$object = $this->collection[$abstract];
426
427	2	if ($object instanceof Closure) {
428	1	$this->collection[$abstract] = function () use ($object, $extension) {
429	1	return $extension($object($this), $this);
430	1	};
431		} else {
432	1	$this->collection[$abstract] = $extension($object, $this);
433		}
434
435	2	return $this;
436		}
437
438		/**
439		* Makes an resolvable element an singleton.
440		*
441		* @param string $abstract The alias name that will be used to call the element.
442		*
443		* @throws NotFoundException When no element was found with $abstract key.
444		* @throws ContainerException When the element on $abstract key is not resolvable.
445		*
446		* @return self
447		*/
448
449	1	public function share(string $abstract) : self
450		{
451	1	if (! isset($this->collection[$abstract])) {
452		throw new NotFoundException("Element '$abstract' not found");
453		}
454
455	1	if (! $this->collection[$abstract] instanceof Closure) {
456		throw new ContainerException("'$abstract' must be a resolvable element");
457		}
458
459	1	$this->collection[$abstract] = $this->collection[$abstract]($this);
460
461	1	return $this;
462		}
463
464		}
465

codeburnerframework / container

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Container::make() A

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