Container::buildInternal() - Code Metrics - Inspection of "Use static function, inline call" - yiisoft/di - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#364)

by Alexander

created 2024-06-15 07:51 UTC

Container::buildInternal() A

↳ Parent: Container::addProviders()

Complexity

Conditions	2
Paths	2

Size

Total Lines	9
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	5
CRAP Score	2

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
cc	2
eloc	4
c	2
b	0
f	0
nc	2
nop	1
dl	0
loc	9
ccs	5
cts	5
cp	1
crap	2
rs	10

<?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\Reference\TagReference;

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](https://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 $id): bool
    {
        if (TagReference::isTagAlias($id)) {
            $tag = TagReference::extractTagFromAlias($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 $exception) {
                    if (!$this->delegates->has($id)) {
                        if ($exception instanceof NotFoundException) {
                            if ($id !== $exception->getId()) {
                                $buildStack = $exception->getBuildStack();
                                array_unshift($buildStack, $id);
                                throw new NotFoundException($exception->getId(), $buildStack);
                            }
                            throw $exception;
                        }
                        throw new NotFoundException($id, [$id], previous: $exception);
                    }

                    /** @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.
     *
     * @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.
     *
     * @throws InvalidConfigException
     */
    private function setDelegates(array $delegates): void
    {
        $this->delegates = new CompositeContainer();
        $container = $this->get(ContainerInterface::class);

        foreach ($delegates as $delegate) {
            if (!$delegate instanceof Closure) {
                throw new InvalidConfigException(
                    'Delegate must be callable in format "function (ContainerInterface $container): ContainerInterface".'
                );
            }

            /** @var ContainerInterface */
            $delegate = $delegate($container);

            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 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(static 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 $id)
    {
        if (TagReference::isTagAlias($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 {
            if (!$this->definitions->has($id)) {
                throw new NotFoundException($id, $this->definitions->getBuildStack());
            }

            $definition = DefinitionNormalizer::normalize($this->definitions->get($id), $id);

            /** @var mixed $object */
            $object = $definition->resolve($this->get(ContainerInterface::class));
        } finally {
            unset($this->building[$id]);
        }

        return $object;
    }

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

        return $services;
    }

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

yiisoft / di

Pull Request — master (#364)

Container::buildInternal() A

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