Container::get() - Code Metrics - Inspection of "Remove DependencyResolver (#260)" - yiisoft/di - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — master ( 9fbd9e...0e0f2b )

by Alexander

created 2021-09-18 15:28 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 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 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 $id): bool
    {
        return strpos($id, 'tag@') === 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) || is_object($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 Psr\Container\ContainerInterface;
9		use Yiisoft\Definitions\Infrastructure\DefinitionValidator;
10		use Yiisoft\Di\Contracts\ServiceProviderInterface;
11		use Yiisoft\Definitions\ArrayDefinition;
12		use Yiisoft\Definitions\Exception\CircularReferenceException;
13		use Yiisoft\Definitions\Exception\InvalidConfigException;
14		use Yiisoft\Definitions\Exception\NotFoundException;
15		use Yiisoft\Definitions\Exception\NotInstantiableException;
16
17		use function array_key_exists;
18		use function array_keys;
19		use function get_class;
20		use function implode;
21		use function in_array;
22		use function is_array;
23		use function is_object;
24		use function is_string;
25
26		/**
27		* Container implements a [dependency injection](http://en.wikipedia.org/wiki/Dependency_injection) container.
28		*/
29		final class Container implements ContainerInterface
30		{
31		private const META_TAGS = 'tags';
32		private const META_RESET = 'reset';
33		private const ALLOWED_META = [self::META_TAGS, self::META_RESET];
34
35		/**
36		* @var DefinitionStorage storage of object definitions
37		*/
38		private DefinitionStorage $definitions;
39		/**
40		* @var array used to collect ids instantiated during build
41		* to detect circular references
42		*/
43		private array $building = [];
44
45		/**
46		* @var bool $validate Validate definitions when set
47		*/
48		private bool $validate;
49
50		/**
51		* @var object[]
52		*/
53		private array $instances = [];
54
55		private CompositeContainer $delegates;
56
57		private array $tags;
58
59		private array $resetters = [];
60
61		/**
62		* Container constructor.
63		*
64		* @param array $definitions Definitions to put into container.
65		* @param array $providers Service providers to get definitions from.
66		* lookup to when resolving dependencies. If provided the current container
67		* is no longer queried for dependencies.
68		* @param array $tags
69		* @param bool $validate If definitions should be validated immediately.
70		* @param array $delegates Container delegates. Each delegate must is a callable in format
71		* "function (ContainerInterface $container): ContainerInterface". The container instance returned is used
72		* in case a service can not be found in primary container.
73		*
74		* @throws InvalidConfigException
75		*
76		* @psalm-suppress PropertyNotSetInConstructor
77		*/
78	95	public function __construct(
79		array $definitions = [],
80		array $providers = [],
81		array $tags = [],
82		bool $validate = true,
83		array $delegates = []
84		) {
85	95	$this->tags = $tags;
86	95	$this->validate = $validate;
87	95	$this->definitions = new DefinitionStorage();
88	95	$this->setDefaultDefinitions();
89	95	$this->setMultiple($definitions);
90	89	$this->addProviders($providers);
91	88	$this->setDelegates($delegates);
92	88	}
93
94		/**
95		* Returns a value indicating whether the container has the definition of the specified name.
96		*
97		* @param string $id class name, interface name or alias name
98		*
99		* @return bool whether the container is able to provide instance of class specified.
100		*
101		* @see set()
102		*/
103	26	public function has($id): bool
104		{
105		/** @psalm-suppress DocblockTypeContradiction */
106	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...
107		return false;
108		}
109
110	26	if ($this->isTagAlias($id)) {
111	2	$tag = substr($id, 4);
112	2	return isset($this->tags[$tag]);
113		}
114
115		try {
116	24	return $this->definitions->has($id);
117	2	} catch (CircularReferenceException $e) {
118	2	return true;
119		}
120		}
121
122		/**
123		* Returns an instance by either interface name or alias.
124		*
125		* Same instance of the class will be returned each time this method is called.
126		*
127		* @param string $id The interface or an alias name that was previously registered.
128		*
129		* @throws CircularReferenceException
130		* @throws InvalidConfigException
131		* @throws NotFoundException
132		* @throws NotInstantiableException
133		*
134		* @return mixed\|object An instance of the requested interface.
135		*
136		* @psalm-template T
137		* @psalm-param string\|class-string<T> $id
138		* @psalm-return ($id is class-string ? T : mixed)
139		*/
140	82	public function get($id)
141		{
142		/** @psalm-suppress TypeDoesNotContainType */
143	82	if (!is_string($id)) {
		0 ignored issues – show introduced 2021-08-10 08:46 UTC by Report Bug Copy Issue Report The condition `is_string($id)` is always `true`. Loading history...
144		throw new \InvalidArgumentException("Id must be a string, {$this->getVariableType($id)} given.");
145		}
146
147	82	if (!array_key_exists($id, $this->instances)) {
148		try {
149	82	$this->instances[$id] = $this->build($id);
150	14	} catch (NotFoundException $e) {
151	5	if (!$this->delegates->has($id)) {
152	4	throw $e;
153		}
154
155	1	return $this->delegates->get($id);
156		}
157		}
158
159	76	if ($id === StateResetter::class && $this->definitions->get($id) === StateResetter::class) {
160	4	$resetters = [];
161	4	foreach ($this->resetters as $serviceId => $callback) {
162	4	if (isset($this->instances[$serviceId])) {
163	4	$resetters[$serviceId] = $callback;
164		}
165		}
166	4	if ($this->delegates->has(StateResetter::class)) {
167		$resetters[] = $this->delegates->get(StateResetter::class);
168		}
169	4	$this->instances[$id]->setResetters($resetters);
170		}
171
172	76	return $this->instances[$id];
173		}
174
175		/**
176		* Sets a definition to the container. Definition may be defined multiple ways.
177		*
178		* @param string $id
179		* @param mixed $definition
180		*
181		* @throws InvalidConfigException
182		*
183		* @see `DefinitionNormalizer::normalize()`
184		*/
185	95	private function set(string $id, $definition): void
186		{
187	95	[$definition, $meta] = DefinitionParser::parse($definition);
188	95	if ($this->validate) {
189	95	$this->validateDefinition($definition, $id);
190	95	$this->validateMeta($meta);
191		}
192
193	95	if (isset($meta[self::META_TAGS])) {
194	8	if ($this->validate) {
195	8	$this->validateTags($meta[self::META_TAGS]);
196		}
197	8	$this->setTags($id, $meta[self::META_TAGS]);
198		}
199	95	if (isset($meta[self::META_RESET])) {
200	5	$this->setResetter($id, $meta[self::META_RESET]);
201		}
202
203	95	unset($this->instances[$id]);
204	95	$this->definitions->set($id, $definition);
205	95	}
206
207		/**
208		* Sets multiple definitions at once.
209		*
210		* @param array $config definitions indexed by their ids
211		*
212		* @throws InvalidConfigException
213		*/
214	95	private function setMultiple(array $config): void
215		{
216	95	foreach ($config as $id => $definition) {
217	95	if ($this->validate && !is_string($id)) {
218	1	throw new InvalidConfigException(sprintf('Key must be a string. %s given.', $this->getVariableType($id)));
219		}
220	95	$this->set($id, $definition);
221		}
222	95	}
223
224	95	private function setDefaultDefinitions(): void
225		{
226	95	$this->setMultiple([
227	95	ContainerInterface::class => $this,
228		StateResetter::class => StateResetter::class,
229		]);
230	95	}
231
232		/**
233		* Set container delegates.
234		*
235		* Each delegate must is a callable in format "function (ContainerInterface $container): ContainerInterface".
236		* The container instance returned is used in case a service can not be found in primary container.
237		*
238		* @param array $delegates
239		*
240		* @throws InvalidConfigException
241		*/
242	88	private function setDelegates(array $delegates): void
243		{
244	88	$this->delegates = new CompositeContainer();
245	88	foreach ($delegates as $delegate) {
246	1	if (!$delegate instanceof Closure) {
247		throw new InvalidConfigException(
248		'Delegate must be callable in format "function (ContainerInterface $container): ContainerInterface".'
249		);
250		}
251
252	1	$delegate = $delegate($this);
253
254	1	if (!$delegate instanceof ContainerInterface) {
255		throw new InvalidConfigException(
256		'Delegate callable must return an object that implements ContainerInterface.'
257		);
258		}
259
260	1	$this->delegates->attach($delegate);
261		}
262	88	$this->definitions->setDelegateContainer($this->delegates);
263	88	}
264
265		/**
266		* @param mixed $definition
267		*
268		* @throws InvalidConfigException
269		*/
270	95	private function validateDefinition($definition, ?string $id = null): void
271		{
272	95	if (is_array($definition) && isset($definition[DefinitionParser::IS_PREPARED_ARRAY_DEFINITION_DATA])) {
273	36	$class = $definition['class'];
274	36	$constructorArguments = $definition['__construct()'];
275	36	$methodsAndProperties = $definition['methodsAndProperties'];
276	36	$definition = array_merge(
277	36	$class === null ? [] : [ArrayDefinition::CLASS_NAME => $class],
278	36	[ArrayDefinition::CONSTRUCTOR => $constructorArguments],
279		$methodsAndProperties,
280		);
281		}
282
283	95	if ($definition instanceof ExtensibleService) {
284		throw new InvalidConfigException('Invalid definition. ExtensibleService is only allowed in provider extensions.');
285		}
286
287	95	DefinitionValidator::validate($definition, $id);
288	95	}
289
290		/**
291		* @throws InvalidConfigException
292		*/
293	95	private function validateMeta(array $meta): void
294		{
295	95	foreach ($meta as $key => $_value) {
296	16	if (!in_array($key, self::ALLOWED_META, true)) {
297	3	throw new InvalidConfigException(
298	3	sprintf(
299	3	'Invalid definition: metadata "%s" is not allowed. Did you mean "%s()" or "$%s"?',
300		$key,
301		$key,
302		$key,
303		)
304		);
305		}
306		}
307	95	}
308
309	8	private function validateTags(array $tags): void
310		{
311	8	foreach ($tags as $tag) {
312	8	if (!is_string($tag)) {
313		throw new InvalidConfigException('Invalid tag. Expected a string, got ' . var_export($tag, true) . '.');
314		}
315		}
316	8	}
317
318	8	private function setTags(string $id, array $tags): void
319		{
320	8	foreach ($tags as $tag) {
321	8	if (!isset($this->tags[$tag]) \|\| !in_array($id, $this->tags[$tag], true)) {
322	8	$this->tags[$tag][] = $id;
323		}
324		}
325	8	}
326
327	4	private function setResetter(string $id, Closure $resetter): void
328		{
329	4	$this->resetters[$id] = $resetter;
330	4	}
331
332		/**
333		* Creates new instance by either interface name or alias.
334		*
335		* @param string $id The interface or an alias name that was previously registered.
336		*
337		* @throws CircularReferenceException
338		* @throws InvalidConfigException
339		* @throws NotFoundException
340		*
341		* @return mixed\|object New built instance of the specified class.
342		*
343		* @internal
344		*/
345	82	private function build(string $id)
346		{
347	82	if ($this->isTagAlias($id)) {
348	9	return $this->getTaggedServices($id);
349		}
350
351	81	if (isset($this->building[$id])) {
352	75	if ($id === ContainerInterface::class) {
353	75	return $this;
354		}
355	4	throw new CircularReferenceException(sprintf(
356	4	'Circular reference to "%s" detected while building: %s.',
357		$id,
358	4	implode(', ', array_keys($this->building))
359		));
360		}
361
362	81	$this->building[$id] = 1;
363		try {
364	81	$object = $this->buildInternal($id);
365	75	} finally {
366	81	unset($this->building[$id]);
367		}
368
369	75	return $object;
370		}
371
372	87	private function isTagAlias(string $id): bool
373		{
374	87	return strpos($id, 'tag@') === 0;
375		}
376
377	9	private function getTaggedServices(string $tagAlias): array
378		{
379	9	$tag = substr($tagAlias, 4);
380	9	$services = [];
381	9	if (isset($this->tags[$tag])) {
382	8	foreach ($this->tags[$tag] as $service) {
383	8	$services[] = $this->get($service);
384		}
385		}
386
387	9	return $services;
388		}
389
390		/**
391		* @param string $id
392		*
393		* @throws InvalidConfigException
394		* @throws NotFoundException
395		*
396		* @return mixed\|object
397		*/
398	81	private function buildInternal(string $id)
399		{
400	81	if ($this->definitions->has($id)) {
401	75	$definition = DefinitionNormalizer::normalize($this->definitions->get($id), $id);
402
403	75	return $definition->resolve($this->get(ContainerInterface::class));
404		}
405
406	5	throw new NotFoundException($id, $this->definitions->getBuildStack());
407		}
408
409	89	private function addProviders(array $providers): void
410		{
411	89	$extensions = [];
412	89	foreach ($providers as $provider) {
413	5	$providerInstance = $this->buildProvider($provider);
414	5	$extensions[] = $providerInstance->getExtensions();
415	5	$this->addProviderDefinitions($providerInstance);
416		}
417
418	89	foreach ($extensions as $providerExtensions) {
419	5	foreach ($providerExtensions as $id => $extension) {
420	4	if (!$this->definitions->has($id)) {
421	1	throw new InvalidConfigException("Extended service \"$id\" doesn't exist.");
422		}
423
424	4	$definition = $this->definitions->get($id);
425	4	if (!$definition instanceof ExtensibleService) {
426	4	$definition = new ExtensibleService($definition);
427	4	$this->definitions->set($id, $definition);
428		}
429
430	4	$definition->addExtension($extension);
431		}
432		}
433	88	}
434
435		/**
436		* Adds service provider definitions to the container.
437		*
438		* @param object $provider
439		*
440		* @throws InvalidConfigException
441		* @throws NotInstantiableException
442		*
443		* @see ServiceProviderInterface
444		*/
445	5	private function addProviderDefinitions($provider): void
446		{
447	5	$definitions = $provider->getDefinitions();
448	5	$this->setMultiple($definitions);
449	5	}
450
451		/**
452		* Builds service provider by definition.
453		*
454		* @param mixed $provider Class name or instance of provider.
455		*
456		* @throws InvalidConfigException If provider argument is not valid.
457		*
458		* @return ServiceProviderInterface Instance of service provider.
459		*
460		* @psalm-suppress MoreSpecificReturnType
461		*/
462	5	private function buildProvider($provider): ServiceProviderInterface
463		{
464	5	if ($this->validate && !(is_string($provider) \|\| is_object($provider) && $provider instanceof ServiceProviderInterface)) {
465		throw new InvalidConfigException(
466		sprintf(
467		'Service provider should be a class name or an instance of %s. %s given.',
468		ServiceProviderInterface::class,
469		$this->getVariableType($provider)
470		)
471		);
472		}
473
474	5	$providerInstance = is_object($provider) ? $provider : new $provider();
475	5	if (!$providerInstance instanceof ServiceProviderInterface) {
476		throw new InvalidConfigException(
477		sprintf(
478		'Service provider should be an instance of %s. %s given.',
479		ServiceProviderInterface::class,
480		$this->getVariableType($providerInstance)
481		)
482		);
483		}
484
485		/**
486		* @psalm-suppress LessSpecificReturnStatement
487		*/
488	5	return $providerInstance;
489		}
490
491		/**
492		* @param mixed $variable
493		*/
494	1	private function getVariableType($variable): string
495		{
496	1	return is_object($variable) ? get_class($variable) : gettype($variable);
497		}
498		}
499

yiisoft / di

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Container::get() B

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