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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Di; |
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use Psr\Container\ContainerInterface; |
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use ReflectionClass; |
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use ReflectionException; |
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use ReflectionNamedType; |
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use ReflectionUnionType; |
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use Yiisoft\Factory\Exception\CircularReferenceException; |
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/** |
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* Stores service definitions and checks if a definition could be instantiated. |
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* |
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* @internal |
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*/ |
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final class DefinitionStorage |
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{ |
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private array $definitions; |
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private array $building = []; |
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/** @psalm-suppress PropertyNotSetInConstructor */ |
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private ContainerInterface $delegateContainer; |
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public function __construct(array $definitions = []) |
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{ |
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$this->definitions = $definitions; |
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} |
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public function setDelegateContainer(ContainerInterface $delegateContainer): void |
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{ |
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$this->delegateContainer = $delegateContainer; |
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} |
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/** |
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* Checks if there is a definition with ID specified and that it can be created. |
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* |
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* @param string $id class name, interface name or alias name |
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* |
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* @throws CircularReferenceException |
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*/ |
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public function has(string $id): bool |
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{ |
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if (isset($this->definitions[$id])) { |
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return true; |
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} |
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if (!class_exists($id)) { |
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return false; |
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} |
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if (isset($this->building[$id])) { |
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throw new CircularReferenceException(sprintf( |
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'Circular reference to "%s" detected while building: %s.', |
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$id, |
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implode(', ', array_keys($this->building)) |
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)); |
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} |
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try { |
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$reflectionClass = new ReflectionClass($id); |
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} catch (ReflectionException $e) { |
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return false; |
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} |
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if (!$reflectionClass->isInstantiable()) { |
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return false; |
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} |
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$constructor = $reflectionClass->getConstructor(); |
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if ($constructor === null) { |
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$this->definitions[$id] = $id; |
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return true; |
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} |
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$isResolvable = true; |
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$this->building[$id] = 1; |
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try { |
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foreach ($constructor->getParameters() as $parameter) { |
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$type = $parameter->getType(); |
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if ($parameter->isVariadic() || $parameter->isOptional()) { |
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break; |
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} |
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/** |
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* @var ReflectionNamedType|ReflectionUnionType|null $type |
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* @psalm-suppress RedundantConditionGivenDocblockType |
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* @psalm-suppress UndefinedClass |
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*/ |
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if ($type === null || !$type instanceof ReflectionUnionType && $type->isBuiltin()) { |
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$isResolvable = false; |
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break; |
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} |
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// PHP 8 union type is used as type hint |
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/** @psalm-suppress UndefinedClass, TypeDoesNotContainType */ |
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if ($type instanceof ReflectionUnionType) { |
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$isUnionTypeResolvable = false; |
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$unionTypes = []; |
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/** @var ReflectionNamedType $unionType */ |
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foreach ($type->getTypes() as $unionType) { |
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if (!$unionType->isBuiltin()) { |
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$typeName = $unionType->getName(); |
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if ($typeName === 'self') { |
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continue; |
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} |
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$unionTypes[] = $typeName; |
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if ($this->has($typeName)) { |
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$isUnionTypeResolvable = true; |
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break; |
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} |
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} |
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} |
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if (!$isUnionTypeResolvable) { |
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foreach ($unionTypes as $typeName) { |
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if ($this->delegateContainer->has($typeName)) { |
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$isUnionTypeResolvable = true; |
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break; |
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} |
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} |
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$isResolvable = $isUnionTypeResolvable; |
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if (!$isResolvable) { |
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break; |
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} |
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} |
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continue; |
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} |
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/** @var ReflectionNamedType|null $type */ |
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// Our parameter has a class type hint |
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if ($type !== null && !$type->isBuiltin()) { |
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$typeName = $type->getName(); |
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if ($typeName === 'self') { |
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throw new CircularReferenceException(sprintf( |
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'Circular reference to "%s" detected while building: %s.', |
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$id, |
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1 |
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implode(', ', array_keys($this->building)) |
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)); |
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} |
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/** @psalm-suppress RedundantPropertyInitializationCheck */ |
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if (!($this->has($typeName) || (isset($this->delegateContainer) ? $this->delegateContainer->has($typeName) : false))) { |
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$isResolvable = false; |
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break; |
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} |
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} |
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} |
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} finally { |
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unset($this->building[$id]); |
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} |
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if ($isResolvable) { |
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$this->definitions[$id] = $id; |
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} |
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return $isResolvable; |
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} |
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166
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167
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/** |
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168
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* Get a definition with a given ID. |
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169
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* |
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170
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* @return mixed|object Definition with a given ID. |
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*/ |
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172
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91 |
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public function get(string $id) |
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173
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{ |
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174
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91 |
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if (!isset($this->definitions[$id])) { |
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throw new \RuntimeException("Service $id doesn't exist in DefinitionStorage."); |
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} |
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91 |
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return $this->definitions[$id]; |
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} |
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179
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180
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/** |
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181
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* Set a definition. |
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182
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* |
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183
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* @param string $id ID to set definition for. |
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184
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* @param mixed|object $definition Definition to set. |
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185
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*/ |
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186
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97 |
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public function set(string $id, $definition): void |
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187
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{ |
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188
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97 |
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$this->definitions[$id] = $definition; |
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97 |
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} |
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} |
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yiisoft /
di
