Container::get() - Code Metrics - Inspection of "Minor cleanup" - yiisoft/di - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 4b52f9...0619ac )

by Alexander

created 2021-11-17 19:45 UTC

Container::get() B

↳ Parent: Container

Complexity

Conditions	10
Paths	9

Size

Total Lines	33
Code Lines	18

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	16
CRAP Score	10.1371

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	10
eloc	18
c	1
b	0
f	0
nc	9
nop	1
dl	0
loc	33
ccs	16
cts	18
cp	0.8889
crap	10.1371
rs	7.6666

How to fix Complexity

<?php

declare(strict_types=1);

namespace Yiisoft\Di;

use Closure;
use InvalidArgumentException;
use Psr\Container\ContainerInterface;
use Yiisoft\Definitions\Infrastructure\DefinitionValidator;
use Yiisoft\Di\Contracts\ServiceProviderInterface;
use Yiisoft\Definitions\ArrayDefinition;
use Yiisoft\Definitions\Exception\CircularReferenceException;
use Yiisoft\Definitions\Exception\InvalidConfigException;
use Yiisoft\Definitions\Exception\NotFoundException;
use Yiisoft\Definitions\Exception\NotInstantiableException;

use function array_key_exists;
use function array_keys;
use function get_class;
use function gettype;
use function implode;
use function in_array;
use function is_array;
use function is_object;
use function is_string;

/**
 * Container implements a [dependency injection](http://en.wikipedia.org/wiki/Dependency_injection) container.
 */
final class Container implements ContainerInterface
{
    private const META_TAGS = 'tags';
    private const META_RESET = 'reset';
    private const ALLOWED_META = [self::META_TAGS, self::META_RESET];

    /**
     * @var DefinitionStorage storage of object definitions
     */
    private DefinitionStorage $definitions;
    /**
     * @var array used to collect ids instantiated during build
     * to detect circular references
     */
    private array $building = [];

    /**
     * @var bool $validate Validate definitions when set
     */
    private bool $validate;

    /**
     * @var object[]
     */
    private array $instances = [];

    private CompositeContainer $delegates;

    private array $tags;

    private array $resetters = [];

    /**
     * Container constructor.
     *
     * @param array $definitions Definitions to put into container.
     * @param array $providers Service providers to get definitions from.
     * lookup to when resolving dependencies. If provided the current container
     * is no longer queried for dependencies.
     * @param array $tags
     * @param bool $validate If definitions should be validated immediately.
     * @param array $delegates Container delegates. Each delegate must is a callable in format
     * "function (ContainerInterface $container): ContainerInterface". The container instance returned is used
     * in case a service can not be found in primary container.
     *
     * @throws InvalidConfigException
     *
     * @psalm-suppress PropertyNotSetInConstructor
     */
    public function __construct(
        array $definitions = [],
        array $providers = [],
        array $tags = [],
        bool $validate = true,
        array $delegates = []
    ) {
        $this->tags = $tags;
        $this->validate = $validate;
        $this->definitions = new DefinitionStorage();
        $this->setDefaultDefinitions();
        $this->setMultiple($definitions);
        $this->addProviders($providers);
        $this->setDelegates($delegates);
    }

    /**
     * Returns a value indicating whether the container has the definition of the specified name.
     *
     * @param string $id class name, interface name or alias name
     *
     * @return bool whether the container is able to provide instance of class specified.
     *
     * @see set()
     */
    public function has($id): bool
    {
        /** @psalm-suppress  DocblockTypeContradiction */
        if (!is_string($id)) {

            return false;
        }

        if ($this->isTagAlias($id)) {
            $tag = substr($id, 4);
            return isset($this->tags[$tag]);
        }

        try {
            return $this->definitions->has($id);
        } catch (CircularReferenceException $e) {
            return true;
        }
    }

    /**
     * Returns an instance by either interface name or alias.
     *
     * Same instance of the class will be returned each time this method is called.
     *
     * @param string $id The interface or an alias name that was previously registered.
     *
     * @throws CircularReferenceException
     * @throws InvalidConfigException
     * @throws NotFoundException
     * @throws NotInstantiableException
     *
     * @return mixed|object An instance of the requested interface.
     *
     * @psalm-template T
     * @psalm-param string|class-string<T> $id
     * @psalm-return ($id is class-string ? T : mixed)
     */
    public function get($id)
    {
        /** @psalm-suppress TypeDoesNotContainType */
        if (!is_string($id)) {

            throw new InvalidArgumentException("Id must be a string, {$this->getVariableType($id)} given.");
        }

        if (!array_key_exists($id, $this->instances)) {
            try {
                $this->instances[$id] = $this->build($id);
            } catch (NotFoundException $e) {
                if (!$this->delegates->has($id)) {
                    throw $e;
                }

                return $this->delegates->get($id);
            }
        }

        if ($id === StateResetter::class && $this->definitions->get($id) === StateResetter::class) {
            $resetters = [];
            foreach ($this->resetters as $serviceId => $callback) {
                if (isset($this->instances[$serviceId])) {
                    $resetters[$serviceId] = $callback;
                }
            }
            if ($this->delegates->has(StateResetter::class)) {
                $resetters[] = $this->delegates->get(StateResetter::class);
            }
            $this->instances[$id]->setResetters($resetters);
        }

        return $this->instances[$id];
    }

    /**
     * Sets a definition to the container. Definition may be defined multiple ways.
     *
     * @param string $id
     * @param mixed $definition
     *
     * @throws InvalidConfigException
     *
     * @see `DefinitionNormalizer::normalize()`
     */
    private function set(string $id, $definition): void
    {
        [$definition, $meta] = DefinitionParser::parse($definition);
        if ($this->validate) {
            $this->validateDefinition($definition, $id);
            $this->validateMeta($meta);
        }

        if (isset($meta[self::META_TAGS])) {
            if ($this->validate) {
                $this->validateTags($meta[self::META_TAGS]);
            }
            $this->setTags($id, $meta[self::META_TAGS]);
        }
        if (isset($meta[self::META_RESET])) {
            $this->setResetter($id, $meta[self::META_RESET]);
        }

        unset($this->instances[$id]);
        $this->definitions->set($id, $definition);
    }

    /**
     * Sets multiple definitions at once.
     *
     * @param array $config definitions indexed by their ids
     *
     * @throws InvalidConfigException
     */
    private function setMultiple(array $config): void
    {
        foreach ($config as $id => $definition) {
            if ($this->validate && !is_string($id)) {
                throw new InvalidConfigException(sprintf('Key must be a string. %s given.', $this->getVariableType($id)));
            }
            $this->set($id, $definition);
        }
    }

    private function setDefaultDefinitions(): void
    {
        $this->setMultiple([
            ContainerInterface::class => $this,
            StateResetter::class => StateResetter::class,
        ]);
    }

    /**
     * Set container delegates.
     *
     * Each delegate must is a callable in format "function (ContainerInterface $container): ContainerInterface".
     * The container instance returned is used in case a service can not be found in primary container.
     *
     * @param array $delegates
     *
     * @throws InvalidConfigException
     */
    private function setDelegates(array $delegates): void
    {
        $this->delegates = new CompositeContainer();
        foreach ($delegates as $delegate) {
            if (!$delegate instanceof Closure) {
                throw new InvalidConfigException(
                    'Delegate must be callable in format "function (ContainerInterface $container): ContainerInterface".'
                );
            }

            $delegate = $delegate($this);

            if (!$delegate instanceof ContainerInterface) {
                throw new InvalidConfigException(
                    'Delegate callable must return an object that implements ContainerInterface.'
                );
            }

            $this->delegates->attach($delegate);
        }
        $this->definitions->setDelegateContainer($this->delegates);
    }

    /**
     * @param mixed $definition
     *
     * @throws InvalidConfigException
     */
    private function validateDefinition($definition, ?string $id = null): void
    {
        if (is_array($definition) && isset($definition[DefinitionParser::IS_PREPARED_ARRAY_DEFINITION_DATA])) {
            $class = $definition['class'];
            $constructorArguments = $definition['__construct()'];
            $methodsAndProperties = $definition['methodsAndProperties'];
            $definition = array_merge(
                $class === null ? [] : [ArrayDefinition::CLASS_NAME => $class],
                [ArrayDefinition::CONSTRUCTOR => $constructorArguments],
                $methodsAndProperties,
            );
        }

        if ($definition instanceof ExtensibleService) {
            throw new InvalidConfigException('Invalid definition. ExtensibleService is only allowed in provider extensions.');
        }

        DefinitionValidator::validate($definition, $id);
    }

    /**
     * @throws InvalidConfigException
     */
    private function validateMeta(array $meta): void
    {
        foreach ($meta as $key => $_value) {
            if (!in_array($key, self::ALLOWED_META, true)) {
                throw new InvalidConfigException(
                    sprintf(
                        'Invalid definition: metadata "%s" is not allowed. Did you mean "%s()" or "$%s"?',
                        $key,
                        $key,
                        $key,
                    )
                );
            }
        }
    }

    private function validateTags(array $tags): void
    {
        foreach ($tags as $tag) {
            if (!is_string($tag)) {
                throw new InvalidConfigException('Invalid tag. Expected a string, got ' . var_export($tag, true) . '.');
            }
        }
    }

    private function setTags(string $id, array $tags): void
    {
        foreach ($tags as $tag) {
            if (!isset($this->tags[$tag]) || !in_array($id, $this->tags[$tag], true)) {
                $this->tags[$tag][] = $id;
            }
        }
    }

    private function setResetter(string $id, Closure $resetter): void
    {
        $this->resetters[$id] = $resetter;
    }

    /**
     * Creates new instance by either interface name or alias.
     *
     * @param string $id The interface or an alias name that was previously registered.
     *
     * @throws CircularReferenceException
     * @throws InvalidConfigException
     * @throws NotFoundException
     *
     * @return mixed|object New built instance of the specified class.
     *
     * @internal
     */
    private function build(string $id)
    {
        if ($this->isTagAlias($id)) {
            return $this->getTaggedServices($id);
        }

        if (isset($this->building[$id])) {
            if ($id === ContainerInterface::class) {
                return $this;
            }
            throw new CircularReferenceException(sprintf(
                'Circular reference to "%s" detected while building: %s.',
                $id,
                implode(', ', array_keys($this->building))
            ));
        }

        $this->building[$id] = 1;
        try {
            $object = $this->buildInternal($id);
        } finally {
            unset($this->building[$id]);
        }

        return $object;
    }

    private function isTagAlias(string $id): bool
    {
        return strncmp($id, 'tag@', 4) === 0;
    }

    private function getTaggedServices(string $tagAlias): array
    {
        $tag = substr($tagAlias, 4);
        $services = [];
        if (isset($this->tags[$tag])) {
            foreach ($this->tags[$tag] as $service) {
                $services[] = $this->get($service);
            }
        }

        return $services;
    }

    /**
     * @param string $id
     *
     * @throws InvalidConfigException
     * @throws NotFoundException
     *
     * @return mixed|object
     */
    private function buildInternal(string $id)
    {
        if ($this->definitions->has($id)) {
            $definition = DefinitionNormalizer::normalize($this->definitions->get($id), $id);

            return $definition->resolve($this->get(ContainerInterface::class));
        }

        throw new NotFoundException($id, $this->definitions->getBuildStack());
    }

    private function addProviders(array $providers): void
    {
        $extensions = [];
        foreach ($providers as $provider) {
            $providerInstance = $this->buildProvider($provider);
            $extensions[] = $providerInstance->getExtensions();
            $this->addProviderDefinitions($providerInstance);
        }

        foreach ($extensions as $providerExtensions) {
            foreach ($providerExtensions as $id => $extension) {
                if (!$this->definitions->has($id)) {
                    throw new InvalidConfigException("Extended service \"$id\" doesn't exist.");
                }

                $definition = $this->definitions->get($id);
                if (!$definition instanceof ExtensibleService) {
                    $definition = new ExtensibleService($definition);
                    $this->definitions->set($id, $definition);
                }

                $definition->addExtension($extension);
            }
        }
    }

    /**
     * Adds service provider definitions to the container.
     *
     * @param object $provider
     *
     * @throws InvalidConfigException
     * @throws NotInstantiableException
     *
     * @see ServiceProviderInterface
     */
    private function addProviderDefinitions($provider): void
    {
        $definitions = $provider->getDefinitions();
        $this->setMultiple($definitions);
    }

    /**
     * Builds service provider by definition.
     *
     * @param mixed $provider Class name or instance of provider.
     *
     * @throws InvalidConfigException If provider argument is not valid.
     *
     * @return ServiceProviderInterface Instance of service provider.
     *
     * @psalm-suppress MoreSpecificReturnType
     */
    private function buildProvider($provider): ServiceProviderInterface
    {
        if ($this->validate && !(is_string($provider) || $provider instanceof ServiceProviderInterface)) {
            throw new InvalidConfigException(
                sprintf(
                    'Service provider should be a class name or an instance of %s. %s given.',
                    ServiceProviderInterface::class,
                    $this->getVariableType($provider)
                )
            );
        }

        $providerInstance = is_object($provider) ? $provider : new $provider();
        if (!$providerInstance instanceof ServiceProviderInterface) {
            throw new InvalidConfigException(
                sprintf(
                    'Service provider should be an instance of %s. %s given.',
                    ServiceProviderInterface::class,
                    $this->getVariableType($providerInstance)
                )
            );
        }

        /**
         * @psalm-suppress LessSpecificReturnStatement
         */
        return $providerInstance;
    }

    /**
     * @param mixed $variable
     */
    private function getVariableType($variable): string
    {
        return is_object($variable) ? get_class($variable) : gettype($variable);
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Yiisoft\Di;
6
7		use Closure;
8		use InvalidArgumentException;
9		use Psr\Container\ContainerInterface;
10		use Yiisoft\Definitions\Infrastructure\DefinitionValidator;
11		use Yiisoft\Di\Contracts\ServiceProviderInterface;
12		use Yiisoft\Definitions\ArrayDefinition;
13		use Yiisoft\Definitions\Exception\CircularReferenceException;
14		use Yiisoft\Definitions\Exception\InvalidConfigException;
15		use Yiisoft\Definitions\Exception\NotFoundException;
16		use Yiisoft\Definitions\Exception\NotInstantiableException;
17
18		use function array_key_exists;
19		use function array_keys;
20		use function get_class;
21		use function gettype;
22		use function implode;
23		use function in_array;
24		use function is_array;
25		use function is_object;
26		use function is_string;
27
28		/**
29		* Container implements a [dependency injection](http://en.wikipedia.org/wiki/Dependency_injection) container.
30		*/
31		final class Container implements ContainerInterface
32		{
33		private const META_TAGS = 'tags';
34		private const META_RESET = 'reset';
35		private const ALLOWED_META = [self::META_TAGS, self::META_RESET];
36
37		/**
38		* @var DefinitionStorage storage of object definitions
39		*/
40		private DefinitionStorage $definitions;
41		/**
42		* @var array used to collect ids instantiated during build
43		* to detect circular references
44		*/
45		private array $building = [];
46
47		/**
48		* @var bool $validate Validate definitions when set
49		*/
50		private bool $validate;
51
52		/**
53		* @var object[]
54		*/
55		private array $instances = [];
56
57		private CompositeContainer $delegates;
58
59		private array $tags;
60
61		private array $resetters = [];
62
63		/**
64		* Container constructor.
65		*
66		* @param array $definitions Definitions to put into container.
67		* @param array $providers Service providers to get definitions from.
68		* lookup to when resolving dependencies. If provided the current container
69		* is no longer queried for dependencies.
70		* @param array $tags
71		* @param bool $validate If definitions should be validated immediately.
72		* @param array $delegates Container delegates. Each delegate must is a callable in format
73		* "function (ContainerInterface $container): ContainerInterface". The container instance returned is used
74		* in case a service can not be found in primary container.
75		*
76		* @throws InvalidConfigException
77		*
78		* @psalm-suppress PropertyNotSetInConstructor
79		*/
80	95	public function __construct(
81		array $definitions = [],
82		array $providers = [],
83		array $tags = [],
84		bool $validate = true,
85		array $delegates = []
86		) {
87	95	$this->tags = $tags;
88	95	$this->validate = $validate;
89	95	$this->definitions = new DefinitionStorage();
90	95	$this->setDefaultDefinitions();
91	95	$this->setMultiple($definitions);
92	89	$this->addProviders($providers);
93	88	$this->setDelegates($delegates);
94	88	}
95
96		/**
97		* Returns a value indicating whether the container has the definition of the specified name.
98		*
99		* @param string $id class name, interface name or alias name
100		*
101		* @return bool whether the container is able to provide instance of class specified.
102		*
103		* @see set()
104		*/
105	26	public function has($id): bool
106		{
107		/** @psalm-suppress DocblockTypeContradiction */
108	26	if (!is_string($id)) {
		0 ignored issues – show introduced 2021-08-10 08:46 UTC by Report Bug Copy Issue Report The condition `is_string($id)` is always `true`. Loading history...
109		return false;
110		}
111
112	26	if ($this->isTagAlias($id)) {
113	2	$tag = substr($id, 4);
114	2	return isset($this->tags[$tag]);
115		}
116
117		try {
118	24	return $this->definitions->has($id);
119	2	} catch (CircularReferenceException $e) {
120	2	return true;
121		}
122		}
123
124		/**
125		* Returns an instance by either interface name or alias.
126		*
127		* Same instance of the class will be returned each time this method is called.
128		*
129		* @param string $id The interface or an alias name that was previously registered.
130		*
131		* @throws CircularReferenceException
132		* @throws InvalidConfigException
133		* @throws NotFoundException
134		* @throws NotInstantiableException
135		*
136		* @return mixed\|object An instance of the requested interface.
137		*
138		* @psalm-template T
139		* @psalm-param string\|class-string<T> $id
140		* @psalm-return ($id is class-string ? T : mixed)
141		*/
142	82	public function get($id)
143		{
144		/** @psalm-suppress TypeDoesNotContainType */
145	82	if (!is_string($id)) {
		0 ignored issues – show introduced 2021-08-10 08:46 UTC by Report Bug Copy Issue Report The condition `is_string($id)` is always `true`. Loading history...
146		throw new InvalidArgumentException("Id must be a string, {$this->getVariableType($id)} given.");
147		}
148
149	82	if (!array_key_exists($id, $this->instances)) {
150		try {
151	82	$this->instances[$id] = $this->build($id);
152	14	} catch (NotFoundException $e) {
153	5	if (!$this->delegates->has($id)) {
154	4	throw $e;
155		}
156
157	1	return $this->delegates->get($id);
158		}
159		}
160
161	76	if ($id === StateResetter::class && $this->definitions->get($id) === StateResetter::class) {
162	4	$resetters = [];
163	4	foreach ($this->resetters as $serviceId => $callback) {
164	4	if (isset($this->instances[$serviceId])) {
165	4	$resetters[$serviceId] = $callback;
166		}
167		}
168	4	if ($this->delegates->has(StateResetter::class)) {
169		$resetters[] = $this->delegates->get(StateResetter::class);
170		}
171	4	$this->instances[$id]->setResetters($resetters);
172		}
173
174	76	return $this->instances[$id];
175		}
176
177		/**
178		* Sets a definition to the container. Definition may be defined multiple ways.
179		*
180		* @param string $id
181		* @param mixed $definition
182		*
183		* @throws InvalidConfigException
184		*
185		* @see `DefinitionNormalizer::normalize()`
186		*/
187	95	private function set(string $id, $definition): void
188		{
189	95	[$definition, $meta] = DefinitionParser::parse($definition);
190	95	if ($this->validate) {
191	95	$this->validateDefinition($definition, $id);
192	95	$this->validateMeta($meta);
193		}
194
195	95	if (isset($meta[self::META_TAGS])) {
196	8	if ($this->validate) {
197	8	$this->validateTags($meta[self::META_TAGS]);
198		}
199	8	$this->setTags($id, $meta[self::META_TAGS]);
200		}
201	95	if (isset($meta[self::META_RESET])) {
202	5	$this->setResetter($id, $meta[self::META_RESET]);
203		}
204
205	95	unset($this->instances[$id]);
206	95	$this->definitions->set($id, $definition);
207	95	}
208
209		/**
210		* Sets multiple definitions at once.
211		*
212		* @param array $config definitions indexed by their ids
213		*
214		* @throws InvalidConfigException
215		*/
216	95	private function setMultiple(array $config): void
217		{
218	95	foreach ($config as $id => $definition) {
219	95	if ($this->validate && !is_string($id)) {
220	1	throw new InvalidConfigException(sprintf('Key must be a string. %s given.', $this->getVariableType($id)));
221		}
222	95	$this->set($id, $definition);
223		}
224	95	}
225
226	95	private function setDefaultDefinitions(): void
227		{
228	95	$this->setMultiple([
229	95	ContainerInterface::class => $this,
230		StateResetter::class => StateResetter::class,
231		]);
232	95	}
233
234		/**
235		* Set container delegates.
236		*
237		* Each delegate must is a callable in format "function (ContainerInterface $container): ContainerInterface".
238		* The container instance returned is used in case a service can not be found in primary container.
239		*
240		* @param array $delegates
241		*
242		* @throws InvalidConfigException
243		*/
244	88	private function setDelegates(array $delegates): void
245		{
246	88	$this->delegates = new CompositeContainer();
247	88	foreach ($delegates as $delegate) {
248	1	if (!$delegate instanceof Closure) {
249		throw new InvalidConfigException(
250		'Delegate must be callable in format "function (ContainerInterface $container): ContainerInterface".'
251		);
252		}
253
254	1	$delegate = $delegate($this);
255
256	1	if (!$delegate instanceof ContainerInterface) {
257		throw new InvalidConfigException(
258		'Delegate callable must return an object that implements ContainerInterface.'
259		);
260		}
261
262	1	$this->delegates->attach($delegate);
263		}
264	88	$this->definitions->setDelegateContainer($this->delegates);
265	88	}
266
267		/**
268		* @param mixed $definition
269		*
270		* @throws InvalidConfigException
271		*/
272	95	private function validateDefinition($definition, ?string $id = null): void
273		{
274	95	if (is_array($definition) && isset($definition[DefinitionParser::IS_PREPARED_ARRAY_DEFINITION_DATA])) {
275	36	$class = $definition['class'];
276	36	$constructorArguments = $definition['__construct()'];
277	36	$methodsAndProperties = $definition['methodsAndProperties'];
278	36	$definition = array_merge(
279	36	$class === null ? [] : [ArrayDefinition::CLASS_NAME => $class],
280	36	[ArrayDefinition::CONSTRUCTOR => $constructorArguments],
281		$methodsAndProperties,
282		);
283		}
284
285	95	if ($definition instanceof ExtensibleService) {
286		throw new InvalidConfigException('Invalid definition. ExtensibleService is only allowed in provider extensions.');
287		}
288
289	95	DefinitionValidator::validate($definition, $id);
290	95	}
291
292		/**
293		* @throws InvalidConfigException
294		*/
295	95	private function validateMeta(array $meta): void
296		{
297	95	foreach ($meta as $key => $_value) {
298	16	if (!in_array($key, self::ALLOWED_META, true)) {
299	3	throw new InvalidConfigException(
300	3	sprintf(
301	3	'Invalid definition: metadata "%s" is not allowed. Did you mean "%s()" or "$%s"?',
302		$key,
303		$key,
304		$key,
305		)
306		);
307		}
308		}
309	95	}
310
311	8	private function validateTags(array $tags): void
312		{
313	8	foreach ($tags as $tag) {
314	8	if (!is_string($tag)) {
315		throw new InvalidConfigException('Invalid tag. Expected a string, got ' . var_export($tag, true) . '.');
316		}
317		}
318	8	}
319
320	8	private function setTags(string $id, array $tags): void
321		{
322	8	foreach ($tags as $tag) {
323	8	if (!isset($this->tags[$tag]) \|\| !in_array($id, $this->tags[$tag], true)) {
324	8	$this->tags[$tag][] = $id;
325		}
326		}
327	8	}
328
329	4	private function setResetter(string $id, Closure $resetter): void
330		{
331	4	$this->resetters[$id] = $resetter;
332	4	}
333
334		/**
335		* Creates new instance by either interface name or alias.
336		*
337		* @param string $id The interface or an alias name that was previously registered.
338		*
339		* @throws CircularReferenceException
340		* @throws InvalidConfigException
341		* @throws NotFoundException
342		*
343		* @return mixed\|object New built instance of the specified class.
344		*
345		* @internal
346		*/
347	82	private function build(string $id)
348		{
349	82	if ($this->isTagAlias($id)) {
350	9	return $this->getTaggedServices($id);
351		}
352
353	81	if (isset($this->building[$id])) {
354	75	if ($id === ContainerInterface::class) {
355	75	return $this;
356		}
357	4	throw new CircularReferenceException(sprintf(
358	4	'Circular reference to "%s" detected while building: %s.',
359		$id,
360	4	implode(', ', array_keys($this->building))
361		));
362		}
363
364	81	$this->building[$id] = 1;
365		try {
366	81	$object = $this->buildInternal($id);
367	75	} finally {
368	81	unset($this->building[$id]);
369		}
370
371	75	return $object;
372		}
373
374	87	private function isTagAlias(string $id): bool
375		{
376	87	return strncmp($id, 'tag@', 4) === 0;
377		}
378
379	9	private function getTaggedServices(string $tagAlias): array
380		{
381	9	$tag = substr($tagAlias, 4);
382	9	$services = [];
383	9	if (isset($this->tags[$tag])) {
384	8	foreach ($this->tags[$tag] as $service) {
385	8	$services[] = $this->get($service);
386		}
387		}
388
389	9	return $services;
390		}
391
392		/**
393		* @param string $id
394		*
395		* @throws InvalidConfigException
396		* @throws NotFoundException
397		*
398		* @return mixed\|object
399		*/
400	81	private function buildInternal(string $id)
401		{
402	81	if ($this->definitions->has($id)) {
403	75	$definition = DefinitionNormalizer::normalize($this->definitions->get($id), $id);
404
405	75	return $definition->resolve($this->get(ContainerInterface::class));
406		}
407
408	5	throw new NotFoundException($id, $this->definitions->getBuildStack());
409		}
410
411	89	private function addProviders(array $providers): void
412		{
413	89	$extensions = [];
414	89	foreach ($providers as $provider) {
415	5	$providerInstance = $this->buildProvider($provider);
416	5	$extensions[] = $providerInstance->getExtensions();
417	5	$this->addProviderDefinitions($providerInstance);
418		}
419
420	89	foreach ($extensions as $providerExtensions) {
421	5	foreach ($providerExtensions as $id => $extension) {
422	4	if (!$this->definitions->has($id)) {
423	1	throw new InvalidConfigException("Extended service \"$id\" doesn't exist.");
424		}
425
426	4	$definition = $this->definitions->get($id);
427	4	if (!$definition instanceof ExtensibleService) {
428	4	$definition = new ExtensibleService($definition);
429	4	$this->definitions->set($id, $definition);
430		}
431
432	4	$definition->addExtension($extension);
433		}
434		}
435	88	}
436
437		/**
438		* Adds service provider definitions to the container.
439		*
440		* @param object $provider
441		*
442		* @throws InvalidConfigException
443		* @throws NotInstantiableException
444		*
445		* @see ServiceProviderInterface
446		*/
447	5	private function addProviderDefinitions($provider): void
448		{
449	5	$definitions = $provider->getDefinitions();
450	5	$this->setMultiple($definitions);
451	5	}
452
453		/**
454		* Builds service provider by definition.
455		*
456		* @param mixed $provider Class name or instance of provider.
457		*
458		* @throws InvalidConfigException If provider argument is not valid.
459		*
460		* @return ServiceProviderInterface Instance of service provider.
461		*
462		* @psalm-suppress MoreSpecificReturnType
463		*/
464	5	private function buildProvider($provider): ServiceProviderInterface
465		{
466	5	if ($this->validate && !(is_string($provider) \|\| $provider instanceof ServiceProviderInterface)) {
467		throw new InvalidConfigException(
468		sprintf(
469		'Service provider should be a class name or an instance of %s. %s given.',
470		ServiceProviderInterface::class,
471		$this->getVariableType($provider)
472		)
473		);
474		}
475
476	5	$providerInstance = is_object($provider) ? $provider : new $provider();
477	5	if (!$providerInstance instanceof ServiceProviderInterface) {
478		throw new InvalidConfigException(
479		sprintf(
480		'Service provider should be an instance of %s. %s given.',
481		ServiceProviderInterface::class,
482		$this->getVariableType($providerInstance)
483		)
484		);
485		}
486
487		/**
488		* @psalm-suppress LessSpecificReturnStatement
489		*/
490	5	return $providerInstance;
491		}
492
493		/**
494		* @param mixed $variable
495		*/
496	1	private function getVariableType($variable): string
497		{
498	1	return is_object($variable) ? get_class($variable) : gettype($variable);
499		}
500		}
501

yiisoft / di

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Container::get() B

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