Container::isResolvable() - Code Metrics - Inspection of "Fix has() method" - yiisoft/di - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#240)

by Dmitriy

created 2021-08-10 08:44 UTC

Container::isResolvable() D

↳ Parent: Container

Complexity

Conditions	25
Paths	26

Size

Total Lines	97
Code Lines	50

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	33
CRAP Score	46.7535

Importance

Changes	11
Bugs	0	Features	0

Metric	Value
cc	25
eloc	50
c	11
b	0
f	0
nc	26
nop	1
dl	0
loc	97
ccs	33
cts	49
cp	0.6735
crap	46.7535
rs	4.1666

How to fix Long Method Complexity

<?php

declare(strict_types=1);

namespace Yiisoft\Di;

use Closure;
use Psr\Container\ContainerInterface;
use ReflectionClass;
use ReflectionException;
use ReflectionNamedType;
use ReflectionUnionType;
use Yiisoft\Di\Contracts\ServiceProviderInterface;
use Yiisoft\Factory\Definition\ArrayDefinition;
use Yiisoft\Factory\Definition\DefinitionValidator;
use Yiisoft\Factory\Exception\CircularReferenceException;
use Yiisoft\Factory\Exception\InvalidConfigException;
use Yiisoft\Factory\Exception\NotFoundException;
use Yiisoft\Factory\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 array object definitions indexed by their types
     */
    private array $definitions = [];
    /**
     * @var array used to collect ids instantiated during build
     * to detect circular references
     */
    private array $building = [];
    private array $resolvableBuilding = [];

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

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

    private array $tags;

    private array $resetters = [];
    /** @psalm-suppress PropertyNotSetInConstructor */
    private DependencyResolver $dependencyResolver;

    /**
     * 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.
     *
     * @throws InvalidConfigException
     *
     * @psalm-suppress PropertyNotSetInConstructor
     */
    public function __construct(
        array $definitions = [],
        array $providers = [],
        array $tags = [],
        bool $validate = true
    ) {
        $this->tags = $tags;
        $this->validate = $validate;
        $this->setDefaultDefinitions();
        $this->setMultiple($definitions);
        $this->addProviders($providers);
    }

    /**
     * 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 $this->isResolvable($id);
        } catch (CircularReferenceException $e) {
            return false;
        }
    }

    /**
     * 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 \RuntimeException("Id must be string, {$this->getVariableType($id)} given.");
        }

        if ($id === StateResetter::class && !isset($this->definitions[$id])) {
            $resetters = [];
            foreach ($this->resetters as $serviceId => $callback) {
                if (isset($this->instances[$serviceId])) {
                    $resetters[] = $callback->bindTo($this->instances[$serviceId], get_class($this->instances[$serviceId]));
                }
            }
            return new StateResetter($resetters, $this);
        }

        if (!array_key_exists($id, $this->instances)) {
            $this->instances[$id] = $this->build($id);
        }

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

    /**
     * @param string $id class name, interface name or alias name
     *
     * @throws CircularReferenceException
     */
    private function isResolvable(string $id): bool
    {
        if (isset($this->definitions[$id]) || $id === StateResetter::class) {
            return true;
        }

        if (!class_exists($id)) {
            return false;
        }

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

        try {
            $reflectionClass = new ReflectionClass($id);
        } catch (ReflectionException $e) {
            return false;
        }

        if (!$reflectionClass->isInstantiable()) {
            return false;
        }

        $constructor = $reflectionClass->getConstructor();

        if ($constructor === null) {
            return true;
        }

        $isResolvable = true;
        $this->resolvableBuilding[$id] = 1;

        foreach ($constructor->getParameters() as $parameter) {
            $type = $parameter->getType();

            if ($parameter->isVariadic() || $parameter->isOptional()) {
                break;
            }

            /**
             * @var ReflectionNamedType|ReflectionUnionType|null $type
             * @psalm-suppress RedundantConditionGivenDocblockType
             * @psalm-suppress UndefinedClass
             */
            if ($type === null || !$type instanceof ReflectionUnionType && $type->isBuiltin()) {
                $isResolvable = false;
                break;
            }

            // PHP 8 union type is used as type hint
            /** @psalm-suppress UndefinedClass, TypeDoesNotContainType */
            if ($type instanceof ReflectionUnionType) {
                $isUnionTypeResolvable = false;
                /** @var ReflectionNamedType $unionType */
                foreach ($type->getTypes() as $unionType) {
                    if (!$unionType->isBuiltin()) {
                        $typeName = $unionType->getName();
                        if ($typeName === 'self') {
                            continue;
                        }
                        if ($this->isResolvable($typeName)) {
                            $isUnionTypeResolvable = true;
                            break;
                        }
                    }
                }

                $isResolvable = $isUnionTypeResolvable;
                if (!$isResolvable) {
                    break;
                }
                continue;
            }

            /** @var ReflectionNamedType|null $type */
            // Our parameter has a class type hint
            if ($type !== null && !$type->isBuiltin()) {
                $typeName = $type->getName();

                if ($typeName === 'self' || !$this->isResolvable($typeName)) {
                    $isResolvable = false;
                    break;
                }
            }
        }

        if ($isResolvable) {
            $this->definitions[$id] = $id;
        }
        unset($this->resolvableBuilding[$id]);

        return $isResolvable;
    }

    /**
     * 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]);
        $this->definitions[$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->set(ContainerInterface::class, $this);
    }

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

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

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

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

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

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

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

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

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

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

        return $object;
    }

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

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

        return $services;
    }

    /**
     * @param string $id
     *
     * @throws InvalidConfigException
     * @throws NotFoundException
     *
     * @return mixed|object
     */
    private function buildInternal(string $id)
    {
        if (!isset($this->definitions[$id])) {
            return $this->buildPrimitive($id);
        }
        $definition = DefinitionNormalizer::normalize($this->definitions[$id], $id);
        /** @psalm-suppress RedundantPropertyInitializationCheck */
        $this->dependencyResolver ??= new DependencyResolver($this->get(ContainerInterface::class));

        return $definition->resolve($this->dependencyResolver);
    }

    /**
     * @param string $class
     *
     * @throws InvalidConfigException
     * @throws NotFoundException
     *
     * @return mixed|object
     */
    private function buildPrimitive(string $class)
    {
        if ($this->isResolvable($class)) {
            /** @psalm-suppress ArgumentTypeCoercion */
            $definition = ArrayDefinition::fromPreparedData($class);
            /** @psalm-suppress RedundantPropertyInitializationCheck */
            $this->dependencyResolver ??= new DependencyResolver($this->get(ContainerInterface::class));

            return $definition->resolve($this->dependencyResolver);
        }

        throw new NotFoundException($class);
    }

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

                if (!$this->definitions[$id] instanceof ExtensibleService) {
                    $this->definitions[$id] = new ExtensibleService($this->definitions[$id]);
                }

                $this->definitions[$id]->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
    {
        if (is_object($variable)) {
            return get_class($variable);
        }

        return 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 ReflectionClass;
10		use ReflectionException;
11		use ReflectionNamedType;
12		use ReflectionUnionType;
13		use Yiisoft\Di\Contracts\ServiceProviderInterface;
14		use Yiisoft\Factory\Definition\ArrayDefinition;
15		use Yiisoft\Factory\Definition\DefinitionValidator;
16		use Yiisoft\Factory\Exception\CircularReferenceException;
17		use Yiisoft\Factory\Exception\InvalidConfigException;
18		use Yiisoft\Factory\Exception\NotFoundException;
19		use Yiisoft\Factory\Exception\NotInstantiableException;
20
21		use function array_key_exists;
22		use function array_keys;
23		use function class_exists;
24		use function get_class;
25		use function implode;
26		use function in_array;
27		use function is_array;
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 array object definitions indexed by their types
42		*/
43		private array $definitions = [];
44		/**
45		* @var array used to collect ids instantiated during build
46		* to detect circular references
47		*/
48		private array $building = [];
49		private array $resolvableBuilding = [];
50
51		/**
52		* @var bool $validate Validate definitions when set
53		*/
54		private bool $validate;
55
56		/**
57		* @var object[]
58		*/
59		private array $instances = [];
60
61		private array $tags;
62
63		private array $resetters = [];
64		/** @psalm-suppress PropertyNotSetInConstructor */
65		private DependencyResolver $dependencyResolver;
66
67		/**
68		* Container constructor.
69		*
70		* @param array $definitions Definitions to put into container.
71		* @param array $providers Service providers to get definitions from.
72		* lookup to when resolving dependencies. If provided the current container
73		* is no longer queried for dependencies.
74		*
75		* @throws InvalidConfigException
76		*
77		* @psalm-suppress PropertyNotSetInConstructor
78		*/
79	96	public function __construct(
80		array $definitions = [],
81		array $providers = [],
82		array $tags = [],
83		bool $validate = true
84		) {
85	96	$this->tags = $tags;
86	96	$this->validate = $validate;
87	96	$this->setDefaultDefinitions();
88	96	$this->setMultiple($definitions);
89	90	$this->addProviders($providers);
90	89	}
91
92		/**
93		* Returns a value indicating whether the container has the definition of the specified name.
94		*
95		* @param string $id class name, interface name or alias name
96		*
97		* @return bool whether the container is able to provide instance of class specified.
98		*
99		* @see set()
100		*/
101	29	public function has($id): bool
102		{
103		/** @psalm-suppress DocblockTypeContradiction */
104	29	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...
105		return false;
106		}
107
108	29	if ($this->isTagAlias($id)) {
109	2	$tag = substr($id, 4);
110	2	return isset($this->tags[$tag]);
111		}
112
113		try {
114	27	return $this->isResolvable($id);
115	1	} catch (CircularReferenceException $e) {
116	1	return false;
117		}
118		}
119
120		/**
121		* Returns an instance by either interface name or alias.
122		*
123		* Same instance of the class will be returned each time this method is called.
124		*
125		* @param string $id The interface or an alias name that was previously registered.
126		*
127		* @throws CircularReferenceException
128		* @throws InvalidConfigException
129		* @throws NotFoundException
130		* @throws NotInstantiableException
131		*
132		* @return mixed\|object An instance of the requested interface.
133		*
134		* @psalm-template T
135		* @psalm-param string\|class-string<T> $id
136		* @psalm-return ($id is class-string ? T : mixed)
137		*/
138	83	public function get($id)
139		{
140		/** @psalm-suppress TypeDoesNotContainType */
141	83	if (!is_string($id)) {
		0 ignored issues – show introduced 2021-08-10 08:46 UTC by Report Bug Copy Issue Report The condition `is_string($id)` is always `true`. Loading history...
142		throw new \RuntimeException("Id must be string, {$this->getVariableType($id)} given.");
143		}
144
145	83	if ($id === StateResetter::class && !isset($this->definitions[$id])) {
146	4	$resetters = [];
147	4	foreach ($this->resetters as $serviceId => $callback) {
148	4	if (isset($this->instances[$serviceId])) {
149	4	$resetters[] = $callback->bindTo($this->instances[$serviceId], get_class($this->instances[$serviceId]));
150		}
151		}
152	4	return new StateResetter($resetters, $this);
153		}
154
155	83	if (!array_key_exists($id, $this->instances)) {
156	83	$this->instances[$id] = $this->build($id);
157		}
158
159	79	return $this->instances[$id];
160		}
161
162		/**
163		* @param string $id class name, interface name or alias name
164		*
165		* @throws CircularReferenceException
166		*/
167	58	private function isResolvable(string $id): bool
168		{
169	58	if (isset($this->definitions[$id]) \|\| $id === StateResetter::class) {
170	27	return true;
171		}
172
173	55	if (!class_exists($id)) {
174	12	return false;
175		}
176
177	50	if (isset($this->resolvableBuilding[$id])) {
178	3	throw new CircularReferenceException(sprintf(
179	3	'Circular reference to "%s" detected while building: %s.',
180		$id,
181	3	implode(', ', array_keys($this->resolvableBuilding))
182		));
183		}
184
185		try {
186	50	$reflectionClass = new ReflectionClass($id);
187		} catch (ReflectionException $e) {
188		return false;
189		}
190
191	50	if (!$reflectionClass->isInstantiable()) {
192		return false;
193		}
194
195	50	$constructor = $reflectionClass->getConstructor();
196
197	50	if ($constructor === null) {
198	5	return true;
199		}
200
201	48	$isResolvable = true;
202	48	$this->resolvableBuilding[$id] = 1;
203
204	48	foreach ($constructor->getParameters() as $parameter) {
205	48	$type = $parameter->getType();
206
207	48	if ($parameter->isVariadic() \|\| $parameter->isOptional()) {
208	43	break;
209		}
210
211		/**
212		* @var ReflectionNamedType\|ReflectionUnionType\|null $type
213		* @psalm-suppress RedundantConditionGivenDocblockType
214		* @psalm-suppress UndefinedClass
215		*/
216	18	if ($type === null \|\| !$type instanceof ReflectionUnionType && $type->isBuiltin()) {
217	4	$isResolvable = false;
218	4	break;
219		}
220
221		// PHP 8 union type is used as type hint
222		/** @psalm-suppress UndefinedClass, TypeDoesNotContainType */
223	18	if ($type instanceof ReflectionUnionType) {
224		$isUnionTypeResolvable = false;
225		/** @var ReflectionNamedType $unionType */
226		foreach ($type->getTypes() as $unionType) {
227		if (!$unionType->isBuiltin()) {
228		$typeName = $unionType->getName();
229		if ($typeName === 'self') {
230		continue;
231		}
232		if ($this->isResolvable($typeName)) {
233		$isUnionTypeResolvable = true;
234		break;
235		}
236		}
237		}
238
239		$isResolvable = $isUnionTypeResolvable;
240		if (!$isResolvable) {
241		break;
242		}
243		continue;
244		}
245
246		/** @var ReflectionNamedType\|null $type */
247		// Our parameter has a class type hint
248	18	if ($type !== null && !$type->isBuiltin()) {
249	18	$typeName = $type->getName();
250
251	18	if ($typeName === 'self' \|\| !$this->isResolvable($typeName)) {
252	6	$isResolvable = false;
253	6	break;
254		}
255		}
256		}
257
258	45	if ($isResolvable) {
259	43	$this->definitions[$id] = $id;
260		}
261	45	unset($this->resolvableBuilding[$id]);
262
263	45	return $isResolvable;
264		}
265
266		/**
267		* Sets a definition to the container. Definition may be defined multiple ways.
268		*
269		* @param string $id
270		* @param mixed $definition
271		*
272		* @throws InvalidConfigException
273		*
274		* @see `DefinitionNormalizer::normalize()`
275		*/
276	96	private function set(string $id, $definition): void
277		{
278	96	[$definition, $meta] = DefinitionParser::parse($definition);
279	96	if ($this->validate) {
280	96	$this->validateDefinition($definition, $id);
281	96	$this->validateMeta($meta);
282		}
283
284	96	if (isset($meta[self::META_TAGS])) {
285	8	if ($this->validate) {
286	8	$this->validateTags($meta[self::META_TAGS]);
287		}
288	8	$this->setTags($id, $meta[self::META_TAGS]);
289		}
290	96	if (isset($meta[self::META_RESET])) {
291	5	$this->setResetter($id, $meta[self::META_RESET]);
292		}
293
294	96	unset($this->instances[$id]);
295	96	$this->definitions[$id] = $definition;
296	96	}
297
298		/**
299		* Sets multiple definitions at once.
300		*
301		* @param array $config definitions indexed by their ids
302		*
303		* @throws InvalidConfigException
304		*/
305	96	private function setMultiple(array $config): void
306		{
307	96	foreach ($config as $id => $definition) {
308	88	if ($this->validate && !is_string($id)) {
309	1	throw new InvalidConfigException(sprintf('Key must be a string. %s given.', $this->getVariableType($id)));
310		}
311	87	$this->set($id, $definition);
312		}
313	90	}
314
315	96	private function setDefaultDefinitions(): void
316		{
317	96	$this->set(ContainerInterface::class, $this);
318	96	}
319
320		/**
321		* @param mixed $definition
322		*
323		* @throws InvalidConfigException
324		*/
325	96	private function validateDefinition($definition, ?string $id = null): void
326		{
327	96	if (is_array($definition) && isset($definition[DefinitionParser::IS_PREPARED_ARRAY_DEFINITION_DATA])) {
328	39	$class = $definition['class'];
329	39	$constructorArguments = $definition['__construct()'];
330	39	$methodsAndProperties = $definition['methodsAndProperties'];
331	39	$definition = array_merge(
332	39	$class === null ? [] : [ArrayDefinition::CLASS_NAME => $class],
333	39	[ArrayDefinition::CONSTRUCTOR => $constructorArguments],
334		$methodsAndProperties,
335		);
336		}
337
338	96	if ($definition instanceof ExtensibleService) {
339		throw new InvalidConfigException('Invalid definition. ExtensibleService is only allowed in provider extensions.');
340		}
341
342	96	DefinitionValidator::validate($definition, $id);
343	96	}
344
345		/**
346		* @throws InvalidConfigException
347		*/
348	96	private function validateMeta(array $meta): void
349		{
350	96	foreach ($meta as $key => $_value) {
351	16	if (!in_array($key, self::ALLOWED_META, true)) {
352	3	throw new InvalidConfigException(
353	3	sprintf(
354	3	'Invalid definition: metadata "%s" is not allowed. Did you mean "%s()" or "$%s"?',
355		$key,
356		$key,
357		$key,
358		)
359		);
360		}
361		}
362	96	}
363
364	8	private function validateTags(array $tags): void
365		{
366	8	foreach ($tags as $tag) {
367	8	if (!is_string($tag)) {
368		throw new InvalidConfigException('Invalid tag. Expected a string, got ' . var_export($tag, true) . '.');
369		}
370		}
371	8	}
372
373	8	private function setTags(string $id, array $tags): void
374		{
375	8	foreach ($tags as $tag) {
376	8	if (!isset($this->tags[$tag]) \|\| !in_array($id, $this->tags[$tag], true)) {
377	8	$this->tags[$tag][] = $id;
378		}
379		}
380	8	}
381
382	4	private function setResetter(string $id, Closure $resetter): void
383		{
384	4	$this->resetters[$id] = $resetter;
385	4	}
386
387		/**
388		* Creates new instance by either interface name or alias.
389		*
390		* @param string $id The interface or an alias name that was previously registered.
391		*
392		* @throws CircularReferenceException
393		* @throws InvalidConfigException
394		* @throws NotFoundException
395		*
396		* @return mixed\|object New built instance of the specified class.
397		*
398		* @internal
399		*/
400	83	private function build(string $id)
401		{
402	83	if ($this->isTagAlias($id)) {
403	9	return $this->getTaggedServices($id);
404		}
405
406	82	if (isset($this->building[$id])) {
407	78	if ($id === ContainerInterface::class) {
408	78	return $this;
409		}
410	4	throw new CircularReferenceException(sprintf(
411	4	'Circular reference to "%s" detected while building: %s.',
412		$id,
413	4	implode(',', array_keys($this->building))
414		));
415		}
416
417	82	$this->building[$id] = 1;
418		try {
419	82	$object = $this->buildInternal($id);
420	78	} finally {
421	82	unset($this->building[$id]);
422		}
423
424	78	return $object;
425		}
426
427	89	private function isTagAlias(string $id): bool
428		{
429	89	return strpos($id, 'tag@') === 0;
430		}
431
432	9	private function getTaggedServices(string $tagAlias): array
433		{
434	9	$tag = substr($tagAlias, 4);
435	9	$services = [];
436	9	if (isset($this->tags[$tag])) {
437	8	foreach ($this->tags[$tag] as $service) {
438	8	$services[] = $this->get($service);
439		}
440		}
441
442	9	return $services;
443		}
444
445		/**
446		* @param string $id
447		*
448		* @throws InvalidConfigException
449		* @throws NotFoundException
450		*
451		* @return mixed\|object
452		*/
453	82	private function buildInternal(string $id)
454		{
455	82	if (!isset($this->definitions[$id])) {
456	46	return $this->buildPrimitive($id);
457		}
458	78	$definition = DefinitionNormalizer::normalize($this->definitions[$id], $id);
459		/** @psalm-suppress RedundantPropertyInitializationCheck */
460	78	$this->dependencyResolver ??= new DependencyResolver($this->get(ContainerInterface::class));
461
462	78	return $definition->resolve($this->dependencyResolver);
463		}
464
465		/**
466		* @param string $class
467		*
468		* @throws InvalidConfigException
469		* @throws NotFoundException
470		*
471		* @return mixed\|object
472		*/
473	46	private function buildPrimitive(string $class)
474		{
475	46	if ($this->isResolvable($class)) {
476		/** @psalm-suppress ArgumentTypeCoercion */
477	41	$definition = ArrayDefinition::fromPreparedData($class);
478		/** @psalm-suppress RedundantPropertyInitializationCheck */
479	41	$this->dependencyResolver ??= new DependencyResolver($this->get(ContainerInterface::class));
480
481	41	return $definition->resolve($this->dependencyResolver);
482		}
483
484	3	throw new NotFoundException($class);
485		}
486
487	90	private function addProviders(array $providers): void
488		{
489	90	$extensions = [];
490	90	foreach ($providers as $provider) {
491	5	$providerInstance = $this->buildProvider($provider);
492	5	$extensions[] = $providerInstance->getExtensions();
493	5	$this->addProviderDefinitions($providerInstance);
494		}
495
496	90	foreach ($extensions as $providerExtensions) {
497	5	foreach ($providerExtensions as $id => $extension) {
498	4	if (!isset($this->definitions[$id])) {
499	1	throw new InvalidConfigException("Extended service \"$id\" doesn't exist.");
500		}
501
502	3	if (!$this->definitions[$id] instanceof ExtensibleService) {
503	3	$this->definitions[$id] = new ExtensibleService($this->definitions[$id]);
504		}
505
506	3	$this->definitions[$id]->addExtension($extension);
507		}
508		}
509	89	}
510
511		/**
512		* Adds service provider definitions to the container.
513		*
514		* @param object $provider
515		*
516		* @throws InvalidConfigException
517		* @throws NotInstantiableException
518		*
519		* @see ServiceProviderInterface
520		*/
521	5	private function addProviderDefinitions($provider): void
522		{
523	5	$definitions = $provider->getDefinitions();
524	5	$this->setMultiple($definitions);
525	5	}
526
527		/**
528		* Builds service provider by definition.
529		*
530		* @param mixed $provider Class name or instance of provider.
531		*
532		* @throws InvalidConfigException If provider argument is not valid.
533		*
534		* @return ServiceProviderInterface Instance of service provider.
535		*
536		* @psalm-suppress MoreSpecificReturnType
537		*/
538	5	private function buildProvider($provider): ServiceProviderInterface
539		{
540	5	if ($this->validate && !(is_string($provider) \|\| is_object($provider) && $provider instanceof ServiceProviderInterface)) {
541		throw new InvalidConfigException(
542		sprintf(
543		'Service provider should be a class name or an instance of %s. %s given.',
544		ServiceProviderInterface::class,
545		$this->getVariableType($provider)
546		)
547		);
548		}
549
550	5	$providerInstance = is_object($provider) ? $provider : new $provider();
551	5	if (!$providerInstance instanceof ServiceProviderInterface) {
552		throw new InvalidConfigException(
553		sprintf(
554		'Service provider should be an instance of %s. %s given.',
555		ServiceProviderInterface::class,
556		$this->getVariableType($providerInstance)
557		)
558		);
559		}
560
561		/**
562		* @psalm-suppress LessSpecificReturnStatement
563		*/
564	5	return $providerInstance;
565		}
566
567		/**
568		* @param mixed $variable
569		*/
570	1	private function getVariableType($variable): string
571		{
572	1	if (is_object($variable)) {
573		return get_class($variable);
574		}
575
576	1	return gettype($variable);
577		}
578		}
579

yiisoft / di

Pull Request — master (#240)

Container::isResolvable() D

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