Container::isTagAlias() - Code Metrics - Inspection of "Fix incorrect exception on trying to get object wi..." - yiisoft/di - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#264)

unknown

created 2021-10-13 19:19 UTC

Container::isTagAlias() A

↳ Parent: Container

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes

Metric	Value
cc	1
eloc	1
c	0
b	0
f	0
nc	1
nop	1
dl	0
loc	3
ccs	2
cts	2
cp	1
crap	1
rs	10

<?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 class_exists;
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|NotInstantiableException $e) {
                if (!$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
     * @throws NotInstantiableException
     *
     * @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));
        }

        if (class_exists($id)) {
            throw new NotInstantiableException($id);
        }

        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 class_exists;
20		use function get_class;
21		use function implode;
22		use function in_array;
23		use function is_array;
24		use function is_object;
25		use function is_string;
26
27		/**
28		* Container implements a [dependency injection](http://en.wikipedia.org/wiki/Dependency_injection) container.
29		*/
30		final class Container implements ContainerInterface
31		{
32		private const META_TAGS = 'tags';
33		private const META_RESET = 'reset';
34		private const ALLOWED_META = [self::META_TAGS, self::META_RESET];
35
36		/**
37		* @var DefinitionStorage storage of object definitions
38		*/
39		private DefinitionStorage $definitions;
40		/**
41		* @var array used to collect ids instantiated during build
42		* to detect circular references
43		*/
44		private array $building = [];
45
46		/**
47		* @var bool $validate Validate definitions when set
48		*/
49		private bool $validate;
50
51		/**
52		* @var object[]
53		*/
54		private array $instances = [];
55
56		private CompositeContainer $delegates;
57
58		private array $tags;
59
60		private array $resetters = [];
61
62		/**
63		* Container constructor.
64		*
65		* @param array $definitions Definitions to put into container.
66		* @param array $providers Service providers to get definitions from.
67		* lookup to when resolving dependencies. If provided the current container
68		* is no longer queried for dependencies.
69		* @param array $tags
70		* @param bool $validate If definitions should be validated immediately.
71		* @param array $delegates Container delegates. Each delegate must is a callable in format
72		* "function (ContainerInterface $container): ContainerInterface". The container instance returned is used
73		* in case a service can not be found in primary container.
74		*
75		* @throws InvalidConfigException
76		*
77		* @psalm-suppress PropertyNotSetInConstructor
78		*/
79	95	public function __construct(
80		array $definitions = [],
81		array $providers = [],
82		array $tags = [],
83		bool $validate = true,
84		array $delegates = []
85		) {
86	95	$this->tags = $tags;
87	95	$this->validate = $validate;
88	95	$this->definitions = new DefinitionStorage();
89	95	$this->setDefaultDefinitions();
90	95	$this->setMultiple($definitions);
91	89	$this->addProviders($providers);
92	88	$this->setDelegates($delegates);
93	88	}
94
95		/**
96		* Returns a value indicating whether the container has the definition of the specified name.
97		*
98		* @param string $id class name, interface name or alias name
99		*
100		* @return bool whether the container is able to provide instance of class specified.
101		*
102		* @see set()
103		*/
104	26	public function has($id): bool
105		{
106		/** @psalm-suppress DocblockTypeContradiction */
107	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...
108		return false;
109		}
110
111	26	if ($this->isTagAlias($id)) {
112	2	$tag = substr($id, 4);
113	2	return isset($this->tags[$tag]);
114		}
115
116		try {
117	24	return $this->definitions->has($id);
118	2	} catch (CircularReferenceException $e) {
119	2	return true;
120		}
121		}
122
123		/**
124		* Returns an instance by either interface name or alias.
125		*
126		* Same instance of the class will be returned each time this method is called.
127		*
128		* @param string $id The interface or an alias name that was previously registered.
129		*
130		* @throws CircularReferenceException
131		* @throws InvalidConfigException
132		* @throws NotFoundException
133		* @throws NotInstantiableException
134		*
135		* @return mixed\|object An instance of the requested interface.
136		*
137		* @psalm-template T
138		* @psalm-param string\|class-string<T> $id
139		* @psalm-return ($id is class-string ? T : mixed)
140		*/
141	82	public function get($id)
142		{
143		/** @psalm-suppress TypeDoesNotContainType */
144	82	if (!is_string($id)) {
		0 ignored issues – show introduced 2021-08-10 08:46 UTC by Report Bug Copy Issue Report The condition `is_string($id)` is always `true`. Loading history...
145		throw new \InvalidArgumentException("Id must be a string, {$this->getVariableType($id)} given.");
146		}
147
148	82	if (!array_key_exists($id, $this->instances)) {
149		try {
150	82	$this->instances[$id] = $this->build($id);
151	14	} catch (NotFoundException\|NotInstantiableException $e) {
152	12	if (!$this->delegates->has($id)) {
153	11	throw $e;
154		}
155
156	1	return $this->delegates->get($id);
157		}
158		}
159
160	76	if ($id === StateResetter::class && $this->definitions->get($id) === StateResetter::class) {
161	4	$resetters = [];
162	4	foreach ($this->resetters as $serviceId => $callback) {
163	4	if (isset($this->instances[$serviceId])) {
164	4	$resetters[$serviceId] = $callback;
165		}
166		}
167	4	if ($this->delegates->has(StateResetter::class)) {
168		$resetters[] = $this->delegates->get(StateResetter::class);
169		}
170	4	$this->instances[$id]->setResetters($resetters);
171		}
172
173	76	return $this->instances[$id];
174		}
175
176		/**
177		* Sets a definition to the container. Definition may be defined multiple ways.
178		*
179		* @param string $id
180		* @param mixed $definition
181		*
182		* @throws InvalidConfigException
183		*
184		* @see `DefinitionNormalizer::normalize()`
185		*/
186	95	private function set(string $id, $definition): void
187		{
188	95	[$definition, $meta] = DefinitionParser::parse($definition);
189	95	if ($this->validate) {
190	95	$this->validateDefinition($definition, $id);
191	95	$this->validateMeta($meta);
192		}
193
194	95	if (isset($meta[self::META_TAGS])) {
195	8	if ($this->validate) {
196	8	$this->validateTags($meta[self::META_TAGS]);
197		}
198	8	$this->setTags($id, $meta[self::META_TAGS]);
199		}
200	95	if (isset($meta[self::META_RESET])) {
201	5	$this->setResetter($id, $meta[self::META_RESET]);
202		}
203
204	95	unset($this->instances[$id]);
205	95	$this->definitions->set($id, $definition);
206	95	}
207
208		/**
209		* Sets multiple definitions at once.
210		*
211		* @param array $config definitions indexed by their ids
212		*
213		* @throws InvalidConfigException
214		*/
215	95	private function setMultiple(array $config): void
216		{
217	95	foreach ($config as $id => $definition) {
218	95	if ($this->validate && !is_string($id)) {
219	1	throw new InvalidConfigException(sprintf('Key must be a string. %s given.', $this->getVariableType($id)));
220		}
221	95	$this->set($id, $definition);
222		}
223	95	}
224
225	95	private function setDefaultDefinitions(): void
226		{
227	95	$this->setMultiple([
228	95	ContainerInterface::class => $this,
229		StateResetter::class => StateResetter::class,
230		]);
231	95	}
232
233		/**
234		* Set container delegates.
235		*
236		* Each delegate must is a callable in format "function (ContainerInterface $container): ContainerInterface".
237		* The container instance returned is used in case a service can not be found in primary container.
238		*
239		* @param array $delegates
240		*
241		* @throws InvalidConfigException
242		*/
243	88	private function setDelegates(array $delegates): void
244		{
245	88	$this->delegates = new CompositeContainer();
246	88	foreach ($delegates as $delegate) {
247	1	if (!$delegate instanceof Closure) {
248		throw new InvalidConfigException(
249		'Delegate must be callable in format "function (ContainerInterface $container): ContainerInterface".'
250		);
251		}
252
253	1	$delegate = $delegate($this);
254
255	1	if (!$delegate instanceof ContainerInterface) {
256		throw new InvalidConfigException(
257		'Delegate callable must return an object that implements ContainerInterface.'
258		);
259		}
260
261	1	$this->delegates->attach($delegate);
262		}
263	88	$this->definitions->setDelegateContainer($this->delegates);
264	88	}
265
266		/**
267		* @param mixed $definition
268		*
269		* @throws InvalidConfigException
270		*/
271	95	private function validateDefinition($definition, ?string $id = null): void
272		{
273	95	if (is_array($definition) && isset($definition[DefinitionParser::IS_PREPARED_ARRAY_DEFINITION_DATA])) {
274	36	$class = $definition['class'];
275	36	$constructorArguments = $definition['__construct()'];
276	36	$methodsAndProperties = $definition['methodsAndProperties'];
277	36	$definition = array_merge(
278	36	$class === null ? [] : [ArrayDefinition::CLASS_NAME => $class],
279	36	[ArrayDefinition::CONSTRUCTOR => $constructorArguments],
280		$methodsAndProperties,
281		);
282		}
283
284	95	if ($definition instanceof ExtensibleService) {
285		throw new InvalidConfigException('Invalid definition. ExtensibleService is only allowed in provider extensions.');
286		}
287
288	95	DefinitionValidator::validate($definition, $id);
289	95	}
290
291		/**
292		* @throws InvalidConfigException
293		*/
294	95	private function validateMeta(array $meta): void
295		{
296	95	foreach ($meta as $key => $_value) {
297	16	if (!in_array($key, self::ALLOWED_META, true)) {
298	3	throw new InvalidConfigException(
299	3	sprintf(
300	3	'Invalid definition: metadata "%s" is not allowed. Did you mean "%s()" or "$%s"?',
301		$key,
302		$key,
303		$key,
304		)
305		);
306		}
307		}
308	95	}
309
310	8	private function validateTags(array $tags): void
311		{
312	8	foreach ($tags as $tag) {
313	8	if (!is_string($tag)) {
314		throw new InvalidConfigException('Invalid tag. Expected a string, got ' . var_export($tag, true) . '.');
315		}
316		}
317	8	}
318
319	8	private function setTags(string $id, array $tags): void
320		{
321	8	foreach ($tags as $tag) {
322	8	if (!isset($this->tags[$tag]) \|\| !in_array($id, $this->tags[$tag], true)) {
323	8	$this->tags[$tag][] = $id;
324		}
325		}
326	8	}
327
328	4	private function setResetter(string $id, Closure $resetter): void
329		{
330	4	$this->resetters[$id] = $resetter;
331	4	}
332
333		/**
334		* Creates new instance by either interface name or alias.
335		*
336		* @param string $id The interface or an alias name that was previously registered.
337		*
338		* @throws CircularReferenceException
339		* @throws InvalidConfigException
340		* @throws NotFoundException
341		*
342		* @return mixed\|object New built instance of the specified class.
343		*
344		* @internal
345		*/
346	82	private function build(string $id)
347		{
348	82	if ($this->isTagAlias($id)) {
349	9	return $this->getTaggedServices($id);
350		}
351
352	81	if (isset($this->building[$id])) {
353	75	if ($id === ContainerInterface::class) {
354	75	return $this;
355		}
356	4	throw new CircularReferenceException(sprintf(
357	4	'Circular reference to "%s" detected while building: %s.',
358		$id,
359	4	implode(', ', array_keys($this->building))
360		));
361		}
362
363	81	$this->building[$id] = 1;
364		try {
365	81	$object = $this->buildInternal($id);
366	75	} finally {
367	81	unset($this->building[$id]);
368		}
369
370	75	return $object;
371		}
372
373	87	private function isTagAlias(string $id): bool
374		{
375	87	return strpos($id, 'tag@') === 0;
376		}
377
378	9	private function getTaggedServices(string $tagAlias): array
379		{
380	9	$tag = substr($tagAlias, 4);
381	9	$services = [];
382	9	if (isset($this->tags[$tag])) {
383	8	foreach ($this->tags[$tag] as $service) {
384	8	$services[] = $this->get($service);
385		}
386		}
387
388	9	return $services;
389		}
390
391		/**
392		* @param string $id
393		*
394		* @throws InvalidConfigException
395		* @throws NotFoundException
396		* @throws NotInstantiableException
397		*
398		* @return mixed\|object
399		*/
400	81	private function buildInternal(string $id)
401		{
402	81	if ($this->definitions->has($id)) {
403	75	$definition = DefinitionNormalizer::normalize($this->definitions->get($id), $id);
404
405	75	return $definition->resolve($this->get(ContainerInterface::class));
406		}
407
408	5	if (class_exists($id)) {
409	3	throw new NotInstantiableException($id);
410		}
411
412	2	throw new NotFoundException($id, $this->definitions->getBuildStack());
413		}
414
415	89	private function addProviders(array $providers): void
416		{
417	89	$extensions = [];
418	89	foreach ($providers as $provider) {
419	5	$providerInstance = $this->buildProvider($provider);
420	5	$extensions[] = $providerInstance->getExtensions();
421	5	$this->addProviderDefinitions($providerInstance);
422		}
423
424	89	foreach ($extensions as $providerExtensions) {
425	5	foreach ($providerExtensions as $id => $extension) {
426	4	if (!$this->definitions->has($id)) {
427	1	throw new InvalidConfigException("Extended service \"$id\" doesn't exist.");
428		}
429
430	4	$definition = $this->definitions->get($id);
431	4	if (!$definition instanceof ExtensibleService) {
432	4	$definition = new ExtensibleService($definition);
433	4	$this->definitions->set($id, $definition);
434		}
435
436	4	$definition->addExtension($extension);
437		}
438		}
439	88	}
440
441		/**
442		* Adds service provider definitions to the container.
443		*
444		* @param object $provider
445		*
446		* @throws InvalidConfigException
447		* @throws NotInstantiableException
448		*
449		* @see ServiceProviderInterface
450		*/
451	5	private function addProviderDefinitions($provider): void
452		{
453	5	$definitions = $provider->getDefinitions();
454	5	$this->setMultiple($definitions);
455	5	}
456
457		/**
458		* Builds service provider by definition.
459		*
460		* @param mixed $provider Class name or instance of provider.
461		*
462		* @throws InvalidConfigException If provider argument is not valid.
463		*
464		* @return ServiceProviderInterface Instance of service provider.
465		*
466		* @psalm-suppress MoreSpecificReturnType
467		*/
468	5	private function buildProvider($provider): ServiceProviderInterface
469		{
470	5	if ($this->validate && !(is_string($provider) \|\| is_object($provider) && $provider instanceof ServiceProviderInterface)) {
471		throw new InvalidConfigException(
472		sprintf(
473		'Service provider should be a class name or an instance of %s. %s given.',
474		ServiceProviderInterface::class,
475		$this->getVariableType($provider)
476		)
477		);
478		}
479
480	5	$providerInstance = is_object($provider) ? $provider : new $provider();
481	5	if (!$providerInstance instanceof ServiceProviderInterface) {
482		throw new InvalidConfigException(
483		sprintf(
484		'Service provider should be an instance of %s. %s given.',
485		ServiceProviderInterface::class,
486		$this->getVariableType($providerInstance)
487		)
488		);
489		}
490
491		/**
492		* @psalm-suppress LessSpecificReturnStatement
493		*/
494	5	return $providerInstance;
495		}
496
497		/**
498		* @param mixed $variable
499		*/
500	1	private function getVariableType($variable): string
501		{
502	1	return is_object($variable) ? get_class($variable) : gettype($variable);
503		}
504		}
505

yiisoft / di

Pull Request — master (#264)

Container::isTagAlias() A

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