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 07:27 UTC

Container::isResolvable() D

↳ Parent: Container

Complexity

Conditions	25
Paths	26

Size

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

yiisoft / di

Pull Request — master (#240)

Container::isResolvable() D

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