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

Test Failed

Pull Request — master (#316)

by Dmitriy

created 2022-12-02 20:24 UTC

Container::get() C

↳ Parent: Container

Complexity

Conditions	14
Paths	27

Size

Total Lines	53
Code Lines	30

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	23
CRAP Score	14

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
cc	14
eloc	30
c	2
b	0
f	0
nc	27
nop	1
dl	0
loc	53
ccs	23
cts	23
cp	1
crap	14
rs	6.2666

How to fix Long Method Complexity

<?php

declare(strict_types=1);

namespace Yiisoft\Di;

use Closure;
use Psr\Container\ContainerExceptionInterface;
use Psr\Container\ContainerInterface;
use Psr\Container\NotFoundExceptionInterface;
use Throwable;
use Yiisoft\Definitions\ArrayDefinition;
use Yiisoft\Definitions\DefinitionStorage;
use Yiisoft\Definitions\Exception\CircularReferenceException;
use Yiisoft\Definitions\Exception\InvalidConfigException;
use Yiisoft\Definitions\Exception\NotInstantiableException;
use Yiisoft\Definitions\Helpers\DefinitionValidator;
use Yiisoft\Di\Helpers\DefinitionNormalizer;
use Yiisoft\Di\Helpers\DefinitionParser;
use Yiisoft\Di\Helpers\TagHelper;

use function array_key_exists;
use function array_keys;
use function implode;
use function in_array;
use function is_array;
use function is_callable;
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 of objects instantiated during build
     * to detect circular references.
     */
    private array $building = [];

    /**
     * @var bool $validate If definitions should be validated.
     */
    private bool $validate;

    private array $instances = [];

    private CompositeContainer $delegates;

    /**
     * @var array Tagged service IDs. The structure is `['tagID' => ['service1', 'service2']]`.
     * @psalm-var array<string, list<string>>
     */
    private array $tags;

    /**
     * @var Closure[]
     */
    private array $resetters = [];
    private bool $useResettersFromMeta = true;

    /**
     * @param ContainerConfigInterface $config Container configuration.
     *
     * @throws InvalidConfigException If configuration is not valid.
     */
    public function __construct(ContainerConfigInterface $config)
    {
        $this->definitions = new DefinitionStorage(
            [
                ContainerInterface::class => $this,
                StateResetter::class => StateResetter::class,
            ],
            $config->useStrictMode()
        );
        $this->validate = $config->shouldValidate();
        $this->setTags($config->getTags());
        $this->addDefinitions($config->getDefinitions());
        $this->addProviders($config->getProviders());
        $this->setDelegates($config->getDelegates());
    }

    /**
     * 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 addDefinition()
     */
    public function has(string $id): bool
    {
        if (TagHelper::isTagAlias($id)) {
            $tag = TagHelper::extractTagFromAlias($id);
            return isset($this->tags[$tag]);
        }

        try {
            return $this->definitions->has($id);
        } catch (CircularReferenceException) {
            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 NotFoundExceptionInterface
     * @throws NotInstantiableException
     * @throws BuildingException
     *
     * @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(string $id)
    {
        if (!array_key_exists($id, $this->instances)) {
            try {
                try {
                    $this->instances[$id] = $this->build($id);
                } catch (NotFoundExceptionInterface $e) {
                    if (!$this->delegates->has($id)) {
                        throw $e;
                    }

                    /** @psalm-suppress MixedReturnStatement */
                    return $this->delegates->get($id);
                }
            } catch (Throwable $e) {
                if ($e instanceof ContainerExceptionInterface && !$e instanceof InvalidConfigException) {
                    throw $e;
                }
                throw new BuildingException($id, $e, $this->definitions->getBuildStack(), $e);
            }
        }

        if ($id === StateResetter::class) {
            $delegatesResetter = null;
            if ($this->delegates->has(StateResetter::class)) {
                $delegatesResetter = $this->delegates->get(StateResetter::class);
            }

            /** @var StateResetter $mainResetter */
            $mainResetter = $this->instances[$id];

            if ($this->useResettersFromMeta) {
                /** @var StateResetter[] $resetters */
                $resetters = [];
                foreach ($this->resetters as $serviceId => $callback) {
                    if (isset($this->instances[$serviceId])) {
                        $resetters[$serviceId] = $callback;
                    }
                }
                if ($delegatesResetter !== null) {
                    $resetters[] = $delegatesResetter;
                }
                $mainResetter->setResetters($resetters);
            } elseif ($delegatesResetter !== null) {
                $resetter = new StateResetter($this->get(ContainerInterface::class));
                $resetter->setResetters([$mainResetter, $delegatesResetter]);

                return $resetter;
            }
        }

        /** @psalm-suppress MixedReturnStatement */
        return $this->instances[$id];
    }

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

        if (isset($meta[self::META_TAGS])) {
            $this->setDefinitionTags($id, $meta[self::META_TAGS]);
        }
        if (isset($meta[self::META_RESET])) {
            $this->setDefinitionResetter($id, $meta[self::META_RESET]);
        }

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

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

            $this->addDefinition($id, $definition);
        }
    }

    /**
     * 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".'
                );
            }

            /** @var 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 Definition to validate.
     * @param string|null $id ID of the definition to validate.
     *
     * @throws InvalidConfigException
     */
    private function validateDefinition(mixed $definition, ?string $id = null): void
    {
        if (is_array($definition) && isset($definition[DefinitionParser::IS_PREPARED_ARRAY_DEFINITION_DATA])) {
            /** @var mixed $class */
            $class = $definition['class'];

            /** @var mixed $constructorArguments */
            $constructorArguments = $definition['__construct()'];

            /**
             * @var array $methodsAndProperties Is always array for prepared array definition data.
             *
             * @see DefinitionParser::parse()
             */
            $methodsAndProperties = $definition['methodsAndProperties'];

            $definition = array_merge(
                $class === null ? [] : [ArrayDefinition::CLASS_NAME => $class],
                [ArrayDefinition::CONSTRUCTOR => $constructorArguments],
                // extract only value from parsed definition method
                array_map(fn (array $data): mixed => $data[2], $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
    {
        /** @var mixed $value */
        foreach ($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,
                    )
                );
            }

            if ($key === self::META_TAGS) {
                $this->validateDefinitionTags($value);
            }

            if ($key === self::META_RESET) {
                $this->validateDefinitionReset($value);
            }
        }
    }

    /**
     * @throws InvalidConfigException
     */
    private function validateDefinitionTags(mixed $tags): void
    {
        if (!is_array($tags)) {
            throw new InvalidConfigException(
                sprintf(
                    'Invalid definition: tags should be array of strings, %s given.',
                    get_debug_type($tags)
                )
            );
        }

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

    /**
     * @throws InvalidConfigException
     */
    private function validateDefinitionReset(mixed $reset): void
    {
        if (!$reset instanceof Closure) {
            throw new InvalidConfigException(
                sprintf(
                    'Invalid definition: "reset" should be closure, %s given.',
                    get_debug_type($reset)
                )
            );
        }
    }

    /**
     * @throws InvalidConfigException
     */
    private function setTags(array $tags): void
    {
        if ($this->validate) {
            foreach ($tags as $tag => $services) {
                if (!is_string($tag)) {
                    throw new InvalidConfigException(
                        sprintf(
                            'Invalid tags configuration: tag should be string, %s given.',
                            $tag
                        )
                    );
                }
                if (!is_array($services)) {
                    throw new InvalidConfigException(
                        sprintf(
                            'Invalid tags configuration: tag should contain array of service IDs, %s given.',
                            get_debug_type($services)
                        )
                    );
                }
                /** @var mixed $service */
                foreach ($services as $service) {
                    if (!is_string($service)) {
                        throw new InvalidConfigException(
                            sprintf(
                                'Invalid tags configuration: service should be defined as class string, %s given.',
                                get_debug_type($service)
                            )
                        );
                    }
                }
            }
        }
        /** @psalm-var array<string, list<string>> $tags */

        $this->tags = $tags;
    }

    /**
     * @psalm-param string[] $tags
     */
    private function setDefinitionTags(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 setDefinitionResetter(string $id, Closure $resetter): void
    {
        $this->resetters[$id] = $resetter;
    }

    /**
     * Add definition to storage.
     *
     * @param string $id ID to set definition for.
     * @param mixed|object $definition Definition to set.
     *
     * @see $definitions
     */
    private function addDefinitionToStorage(string $id, $definition): void
    {
        $this->definitions->set($id, $definition);

        if ($id === StateResetter::class) {
            $this->useResettersFromMeta = false;
        }
    }

    /**
     * Creates new instance by either interface name or alias.
     *
     * @param string $id The interface or an alias name that was previously registered.
     *
     * @throws InvalidConfigException
     * @throws NotFoundExceptionInterface
     * @throws CircularReferenceException
     *
     * @return mixed|object New built instance of the specified class.
     *
     * @internal
     */
    private function build(string $id)
    {
        if (TagHelper::isTagAlias($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 {
            /** @var mixed $object */
            $object = $this->buildInternal($id);
        } finally {
            unset($this->building[$id]);
        }

        return $object;
    }

    private function getTaggedServices(string $tagAlias): array
    {
        $tag = TagHelper::extractTagFromAlias($tagAlias);
        $services = [];
        if (isset($this->tags[$tag])) {
            foreach ($this->tags[$tag] as $service) {
                /** @var mixed */
                $services[] = $this->get($service);
            }
        }

        return $services;
    }

    /**
     * @throws NotFoundExceptionInterface
     * @throws InvalidConfigException
     *
     * @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());
    }

    /**
     * @throws CircularReferenceException
     * @throws InvalidConfigException
     */
    private function addProviders(array $providers): void
    {
        $extensions = [];
        /** @var mixed $provider */
        foreach ($providers as $provider) {
            $providerInstance = $this->buildProvider($provider);
            $extensions[] = $providerInstance->getExtensions();
            $this->addDefinitions($providerInstance->getDefinitions());
        }

        foreach ($extensions as $providerExtensions) {
            /** @var mixed $extension */
            foreach ($providerExtensions as $id => $extension) {
                if (!is_string($id)) {
                    throw new InvalidConfigException(
                        sprintf('Extension key must be a service ID as string, %s given.', $id)
                    );
                }

                if ($id === ContainerInterface::class) {
                    throw new InvalidConfigException('ContainerInterface extensions are not allowed.');
                }

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

                if (!is_callable($extension)) {
                    throw new InvalidConfigException(
                        sprintf(
                            'Extension of service should be callable, %s given.',
                            get_debug_type($extension)
                        )
                    );
                }

                /** @var mixed $definition */
                $definition = $this->definitions->get($id);
                if (!$definition instanceof ExtensibleService) {
                    $definition = new ExtensibleService($definition, $id);
                    $this->addDefinitionToStorage($id, $definition);
                }

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

    /**
     * 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.
     */
    private function buildProvider(mixed $provider): ServiceProviderInterface
    {
        if ($this->validate && !(is_string($provider) || $provider instanceof ServiceProviderInterface)) {
            throw new InvalidConfigException(
                sprintf(
                    'Service provider should be a class name or an instance of %s. %s given.',
                    ServiceProviderInterface::class,
                    get_debug_type($provider)
                )
            );
        }

        /**
         * @psalm-suppress MixedMethodCall Service provider defined as class string
         * should container public constructor, otherwise throws error.
         */
        $providerInstance = is_object($provider) ? $provider : new $provider();
        if (!$providerInstance instanceof ServiceProviderInterface) {
            throw new InvalidConfigException(
                sprintf(
                    'Service provider should be an instance of %s. %s given.',
                    ServiceProviderInterface::class,
                    get_debug_type($providerInstance)
                )
            );
        }

        return $providerInstance;
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Yiisoft\Di;
6
7		use Closure;
8		use Psr\Container\ContainerExceptionInterface;
9		use Psr\Container\ContainerInterface;
10		use Psr\Container\NotFoundExceptionInterface;
11		use Throwable;
12		use Yiisoft\Definitions\ArrayDefinition;
13		use Yiisoft\Definitions\DefinitionStorage;
14		use Yiisoft\Definitions\Exception\CircularReferenceException;
15		use Yiisoft\Definitions\Exception\InvalidConfigException;
16		use Yiisoft\Definitions\Exception\NotInstantiableException;
17		use Yiisoft\Definitions\Helpers\DefinitionValidator;
18		use Yiisoft\Di\Helpers\DefinitionNormalizer;
19		use Yiisoft\Di\Helpers\DefinitionParser;
20		use Yiisoft\Di\Helpers\TagHelper;
21
22		use function array_key_exists;
23		use function array_keys;
24		use function implode;
25		use function in_array;
26		use function is_array;
27		use function is_callable;
28		use function is_object;
29		use function is_string;
30
31		/**
32		* Container implements a [dependency injection](http://en.wikipedia.org/wiki/Dependency_injection) container.
33		*/
34		final class Container implements ContainerInterface
35		{
36		private const META_TAGS = 'tags';
37		private const META_RESET = 'reset';
38		private const ALLOWED_META = [self::META_TAGS, self::META_RESET];
39
40		/**
41		* @var DefinitionStorage Storage of object definitions.
42		*/
43		private DefinitionStorage $definitions;
44
45		/**
46		* @var array Used to collect IDs of objects instantiated during build
47		* to detect circular references.
48		*/
49		private array $building = [];
50
51		/**
52		* @var bool $validate If definitions should be validated.
53		*/
54		private bool $validate;
55
56		private array $instances = [];
57
58		private CompositeContainer $delegates;
59
60		/**
61		* @var array Tagged service IDs. The structure is `['tagID' => ['service1', 'service2']]`.
62		* @psalm-var array<string, list<string>>
63		*/
64		private array $tags;
65
66		/**
67		* @var Closure[]
68		*/
69		private array $resetters = [];
70		private bool $useResettersFromMeta = true;
71
72		/**
73		* @param ContainerConfigInterface $config Container configuration.
74	134	*
75		* @throws InvalidConfigException If configuration is not valid.
76	134	*/
77		public function __construct(ContainerConfigInterface $config)
78	134	{
79		$this->definitions = new DefinitionStorage(
80		[
81	134	ContainerInterface::class => $this,
82		StateResetter::class => StateResetter::class,
83	134	],
84	134	$config->useStrictMode()
85	131	);
86	122	$this->validate = $config->shouldValidate();
87	116	$this->setTags($config->getTags());
88		$this->addDefinitions($config->getDefinitions());
89		$this->addProviders($config->getProviders());
90		$this->setDelegates($config->getDelegates());
91		}
92
93		/**
94		* Returns a value indicating whether the container has the definition of the specified name.
95		*
96		* @param string $id Class name, interface name or alias name.
97		*
98		* @return bool Whether the container is able to provide instance of class specified.
99	47	*
100		* @see addDefinition()
101	47	*/
102	3	public function has(string $id): bool
103	3	{
104		if (TagHelper::isTagAlias($id)) {
105		$tag = TagHelper::extractTagFromAlias($id);
106		return isset($this->tags[$tag]);
107	44	}
108	3
109	3	try {
110		return $this->definitions->has($id);
111		} catch (CircularReferenceException) {
112		return true;
113		}
114		}
115
116		/**
117		* Returns an instance by either interface name or alias.
118		*
119		* Same instance of the class will be returned each time this method is called.
120		*
121		* @param string $id The interface or an alias name that was previously registered.
122		*
123		* @throws CircularReferenceException
124		* @throws InvalidConfigException
125		* @throws NotFoundExceptionInterface
126		* @throws NotInstantiableException
127		* @throws BuildingException
128		*
129		* @return mixed\|object An instance of the requested interface.
130		*
131	99	* @psalm-template T
132		* @psalm-param string\|class-string<T> $id
133	99	* @psalm-return ($id is class-string ? T : mixed)
134		*/
135	99	public function get(string $id)
136	20	{
137	11	if (!array_key_exists($id, $this->instances)) {
138	8	try {
139		try {
140		$this->instances[$id] = $this->build($id);
141		} catch (NotFoundExceptionInterface $e) {
142	3	if (!$this->delegates->has($id)) {
143		throw $e;
144		}
145
146	90	/** @psalm-suppress MixedReturnStatement */
147	10	return $this->delegates->get($id);
148	10	}
149	2	} catch (Throwable $e) {
150		if ($e instanceof ContainerExceptionInterface && !$e instanceof InvalidConfigException) {
151		throw $e;
152		}
153	10	throw new BuildingException($id, $e, $this->definitions->getBuildStack(), $e);
154		}
155	10	}
156
157	7	if ($id === StateResetter::class) {
158	7	$delegatesResetter = null;
159	7	if ($this->delegates->has(StateResetter::class)) {
160	7	$delegatesResetter = $this->delegates->get(StateResetter::class);
161		}
162
163	7	/** @var StateResetter $mainResetter */
164	1	$mainResetter = $this->instances[$id];
165
166	7	if ($this->useResettersFromMeta) {
167	5	/** @var StateResetter[] $resetters */
168	1	$resetters = [];
169	1	foreach ($this->resetters as $serviceId => $callback) {
170		if (isset($this->instances[$serviceId])) {
171	1	$resetters[$serviceId] = $callback;
172		}
173		}
174		if ($delegatesResetter !== null) {
175		$resetters[] = $delegatesResetter;
176	90	}
177		$mainResetter->setResetters($resetters);
178		} elseif ($delegatesResetter !== null) {
179		$resetter = new StateResetter($this->get(ContainerInterface::class));
180		$resetter->setResetters([$mainResetter, $delegatesResetter]);
181
182		return $resetter;
183		}
184		}
185
186		/** @psalm-suppress MixedReturnStatement */
187		return $this->instances[$id];
188		}
189	106
190		/**
191		* Sets a definition to the container. Definition may be defined multiple ways.
192	106	*
193	106	* @param string $id ID to set definition for.
194	106	* @param mixed $definition Definition to set.
195	104	*
196		* @throws InvalidConfigException
197		*
198		* @see DefinitionNormalizer::normalize()
199		*/
200		private function addDefinition(string $id, mixed $definition): void
201	98	{
202	9	/** @var mixed $definition */
203		[$definition, $meta] = DefinitionParser::parse($definition);
204	98	if ($this->validate) {
205	7	$this->validateDefinition($definition, $id);
206		$this->validateMeta($meta);
207		}
208	98	/**
209	98	* @psalm-var array{reset?:Closure,tags?:string[]} $meta
210		*/
211
212		if (isset($meta[self::META_TAGS])) {
213		$this->setDefinitionTags($id, $meta[self::META_TAGS]);
214		}
215		if (isset($meta[self::META_RESET])) {
216		$this->setDefinitionResetter($id, $meta[self::META_RESET]);
217		}
218
219	131	unset($this->instances[$id]);
220		$this->addDefinitionToStorage($id, $definition);
221		}
222	131
223	107	/**
224	1	* Sets multiple definitions at once.
225	1	*
226		* @param array $config Definitions indexed by their IDs.
227	1	*
228		* @throws InvalidConfigException
229		*/
230		private function addDefinitions(array $config): void
231		{
232		/** @var mixed $definition */
233	106	foreach ($config as $id => $definition) {
234		if ($this->validate && !is_string($id)) {
235		throw new InvalidConfigException(
236		sprintf(
237		'Key must be a string. %s given.',
238		get_debug_type($id)
239		)
240		);
241		}
242		/** @var string $id */
243
244		$this->addDefinition($id, $definition);
245		}
246		}
247	116
248		/**
249	116	* Set container delegates.
250	116	*
251	5	* Each delegate must is a callable in format "function (ContainerInterface $container): ContainerInterface".
252	1	* The container instance returned is used in case a service can not be found in primary container.
253		*
254		* @param array $delegates
255		*
256		* @throws InvalidConfigException
257		*/
258	4	private function setDelegates(array $delegates): void
259		{
260	4	$this->delegates = new CompositeContainer();
261	1	foreach ($delegates as $delegate) {
262		if (!$delegate instanceof Closure) {
263		throw new InvalidConfigException(
264		'Delegate must be callable in format "function (ContainerInterface $container): ContainerInterface".'
265		);
266	3	}
267
268	114	/** @var ContainerInterface */
269		$delegate = $delegate($this);
270
271		if (!$delegate instanceof ContainerInterface) {
272		throw new InvalidConfigException(
273		'Delegate callable must return an object that implements ContainerInterface.'
274		);
275		}
276
277	106	$this->delegates->attach($delegate);
278		}
279	106	$this->definitions->setDelegateContainer($this->delegates);
280		}
281	46
282		/**
283		* @param mixed $definition Definition to validate.
284	46	* @param string\|null $id ID of the definition to validate.
285		*
286		* @throws InvalidConfigException
287		*/
288		private function validateDefinition(mixed $definition, ?string $id = null): void
289		{
290		if (is_array($definition) && isset($definition[DefinitionParser::IS_PREPARED_ARRAY_DEFINITION_DATA])) {
291	46	/** @var mixed $class */
292		$class = $definition['class'];
293	46
294	46	/** @var mixed $constructorArguments */
295	46	$constructorArguments = $definition['__construct()'];
296
297		/**
298		* @var array $methodsAndProperties Is always array for prepared array definition data.
299		*
300	106	* @see DefinitionParser::parse()
301	1	*/
302		$methodsAndProperties = $definition['methodsAndProperties'];
303
304		$definition = array_merge(
305		$class === null ? [] : [ArrayDefinition::CLASS_NAME => $class],
306	105	[ArrayDefinition::CONSTRUCTOR => $constructorArguments],
307		// extract only value from parsed definition method
308		array_map(fn (array $data): mixed => $data[2], $methodsAndProperties),
309		);
310		}
311
312	104	if ($definition instanceof ExtensibleService) {
313		throw new InvalidConfigException(
314		'Invalid definition. ExtensibleService is only allowed in provider extensions.'
315	104	);
316	22	}
317	3
318	3	DefinitionValidator::validate($definition, $id);
319		}
320
321		/**
322		* @throws InvalidConfigException
323		*/
324		private function validateMeta(array $meta): void
325		{
326		/** @var mixed $value */
327	20	foreach ($meta as $key => $value) {
328	12	if (!in_array($key, self::ALLOWED_META, true)) {
329		throw new InvalidConfigException(
330		sprintf(
331	18	'Invalid definition: metadata "%s" is not allowed. Did you mean "%s()" or "$%s"?',
332	8	$key,
333		$key,
334		$key,
335		)
336		);
337		}
338
339		if ($key === self::META_TAGS) {
340	12	$this->validateDefinitionTags($value);
341		}
342	12
343	1	if ($key === self::META_RESET) {
344	1	$this->validateDefinitionReset($value);
345		}
346	1	}
347		}
348
349		/**
350		* @throws InvalidConfigException
351	11	*/
352	11	private function validateDefinitionTags(mixed $tags): void
353	1	{
354		if (!is_array($tags)) {
355		throw new InvalidConfigException(
356		sprintf(
357		'Invalid definition: tags should be array of strings, %s given.',
358		get_debug_type($tags)
359		)
360		);
361	8	}
362
363	8	foreach ($tags as $tag) {
364	1	if (!is_string($tag)) {
365	1	throw new InvalidConfigException('Invalid tag. Expected a string, got ' . var_export($tag, true) . '.');
366		}
367	1	}
368		}
369
370		/**
371		* @throws InvalidConfigException
372		*/
373		private function validateDefinitionReset(mixed $reset): void
374		{
375		if (!$reset instanceof Closure) {
376	134	throw new InvalidConfigException(
377		sprintf(
378	134	'Invalid definition: "reset" should be closure, %s given.',
379	134	get_debug_type($reset)
380	5	)
381	1	);
382	1	}
383		}
384
385		/**
386		* @throws InvalidConfigException
387		*/
388	4	private function setTags(array $tags): void
389	1	{
390	1	if ($this->validate) {
391		foreach ($tags as $tag => $services) {
392	1	if (!is_string($tag)) {
393		throw new InvalidConfigException(
394		sprintf(
395		'Invalid tags configuration: tag should be string, %s given.',
396		$tag
397	3	)
398	3	);
399	1	}
400	1	if (!is_array($services)) {
401		throw new InvalidConfigException(
402	1	sprintf(
403		'Invalid tags configuration: tag should contain array of service IDs, %s given.',
404		get_debug_type($services)
405		)
406		);
407		}
408		/** @var mixed $service */
409		foreach ($services as $service) {
410		if (!is_string($service)) {
411	131	throw new InvalidConfigException(
412		sprintf(
413		'Invalid tags configuration: service should be defined as class string, %s given.',
414		get_debug_type($service)
415		)
416		);
417	9	}
418		}
419	9	}
420	9	}
421	9	/** @psalm-var array<string, list<string>> $tags */
422
423		$this->tags = $tags;
424		}
425
426	7	/**
427		* @psalm-param string[] $tags
428	7	*/
429		private function setDefinitionTags(string $id, array $tags): void
430		{
431		foreach ($tags as $tag) {
432		if (!isset($this->tags[$tag]) \|\| !in_array($id, $this->tags[$tag], true)) {
433		$this->tags[$tag][] = $id;
434		}
435		}
436		}
437
438		private function setDefinitionResetter(string $id, Closure $resetter): void
439	98	{
440		$this->resetters[$id] = $resetter;
441	98	}
442
443	98	/**
444	5	* Add definition to storage.
445		*
446		* @param string $id ID to set definition for.
447		* @param mixed\|object $definition Definition to set.
448		*
449		* @see $definitions
450		*/
451		private function addDefinitionToStorage(string $id, $definition): void
452		{
453		$this->definitions->set($id, $definition);
454
455		if ($id === StateResetter::class) {
456		$this->useResettersFromMeta = false;
457		}
458		}
459
460		/**
461	99	* Creates new instance by either interface name or alias.
462		*
463	99	* @param string $id The interface or an alias name that was previously registered.
464	10	*
465		* @throws InvalidConfigException
466		* @throws NotFoundExceptionInterface
467	98	* @throws CircularReferenceException
468	89	*
469	89	* @return mixed\|object New built instance of the specified class.
470		*
471	4	* @internal
472		*/
473		private function build(string $id)
474	4	{
475		if (TagHelper::isTagAlias($id)) {
476		return $this->getTaggedServices($id);
477		}
478	98
479		if (isset($this->building[$id])) {
480		if ($id === ContainerInterface::class) {
481	98	return $this;
482	89	}
483	98	throw new CircularReferenceException(
484		sprintf(
485		'Circular reference to "%s" detected while building: %s.',
486	89	$id,
487		implode(', ', array_keys($this->building))
488		)
489	10	);
490		}
491	10
492	10	$this->building[$id] = 1;
493	10	try {
494	9	/** @var mixed $object */
495		$object = $this->buildInternal($id);
496	9	} finally {
497		unset($this->building[$id]);
498		}
499
500	10	return $object;
501		}
502
503		private function getTaggedServices(string $tagAlias): array
504		{
505		$tag = TagHelper::extractTagFromAlias($tagAlias);
506		$services = [];
507		if (isset($this->tags[$tag])) {
508		foreach ($this->tags[$tag] as $service) {
509	98	/** @var mixed */
510		$services[] = $this->get($service);
511	98	}
512	89	}
513
514	89	return $services;
515		}
516
517	11	/**
518		* @throws NotFoundExceptionInterface
519		* @throws InvalidConfigException
520		*
521		* @return mixed\|object
522		*/
523		private function buildInternal(string $id)
524	122	{
525		if ($this->definitions->has($id)) {
526	122	$definition = DefinitionNormalizer::normalize($this->definitions->get($id), $id);
527
528	122	return $definition->resolve($this->get(ContainerInterface::class));
529	15	}
530	13
531	13	throw new NotFoundException($id, $this->definitions->getBuildStack());
532		}
533
534	120	/**
535		* @throws CircularReferenceException
536	13	* @throws InvalidConfigException
537	10	*/
538	1	private function addProviders(array $providers): void
539	1	{
540		$extensions = [];
541		/** @var mixed $provider */
542		foreach ($providers as $provider) {
543	9	$providerInstance = $this->buildProvider($provider);
544	1	$extensions[] = $providerInstance->getExtensions();
545		$this->addDefinitions($providerInstance->getDefinitions());
546		}
547	8
548	1	foreach ($extensions as $providerExtensions) {
549		/** @var mixed $extension */
550		foreach ($providerExtensions as $id => $extension) {
551	8	if (!is_string($id)) {
552	1	throw new InvalidConfigException(
553	1	sprintf('Extension key must be a service ID as string, %s given.', $id)
554		);
555	1	}
556
557		if ($id === ContainerInterface::class) {
558		throw new InvalidConfigException('ContainerInterface extensions are not allowed.');
559		}
560
561	7	if (!$this->definitions->has($id)) {
562	7	throw new InvalidConfigException("Extended service \"$id\" doesn't exist.");
563	7	}
564	7
565		if (!is_callable($extension)) {
566		throw new InvalidConfigException(
567	7	sprintf(
568		'Extension of service should be callable, %s given.',
569		get_debug_type($extension)
570		)
571		);
572		}
573
574		/** @var mixed $definition */
575		$definition = $this->definitions->get($id);
576		if (!$definition instanceof ExtensibleService) {
577		$definition = new ExtensibleService($definition, $id);
578		$this->addDefinitionToStorage($id, $definition);
579		}
580
581	15	$definition->addExtension($extension);
582		}
583	15	}
584	1	}
585	1
586		/**
587		* Builds service provider by definition.
588	1	*
589		* @param mixed $provider Class name or instance of provider.
590		*
591		* @throws InvalidConfigException If provider argument is not valid.
592		*
593		* @return ServiceProviderInterface Instance of service provider.
594		*/
595		private function buildProvider(mixed $provider): ServiceProviderInterface
596		{
597	14	if ($this->validate && !(is_string($provider) \|\| $provider instanceof ServiceProviderInterface)) {
598	14	throw new InvalidConfigException(
599	1	sprintf(
600	1	'Service provider should be a class name or an instance of %s. %s given.',
601		ServiceProviderInterface::class,
602		get_debug_type($provider)
603	1	)
604		);
605		}
606
607		/**
608	13	* @psalm-suppress MixedMethodCall Service provider defined as class string
609		* should container public constructor, otherwise throws error.
610		*/
611		$providerInstance = is_object($provider) ? $provider : new $provider();
612		if (!$providerInstance instanceof ServiceProviderInterface) {
613		throw new InvalidConfigException(
614		sprintf(
615		'Service provider should be an instance of %s. %s given.',
616		ServiceProviderInterface::class,
617		get_debug_type($providerInstance)
618		)
619		);
620		}
621
622		return $providerInstance;
623		}
624		}
625

yiisoft / di

Pull Request — master (#316)

Container::get() C

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