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<?php |
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namespace yii\di\resolvers; |
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use yii\di\contracts\DependencyInterface; |
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use yii\di\contracts\DependencyResolverInterface; |
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use yii\di\dependencies\ClassDependency; |
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use yii\di\dependencies\InvalidDependency; |
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use yii\di\dependencies\ValueDependency; |
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use yii\di\exceptions\NotInstantiableException; |
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/** |
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* Class ClassNameResolver |
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* This implementation resolves dependencies by using class type hints. |
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* Note that service names need not match the parameter names, parameter names are ignored |
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*/ |
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class ClassNameResolver implements DependencyResolverInterface |
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{ |
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/** |
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* @inheritdoc |
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*/ |
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public function resolveConstructor(string $class): array |
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{ |
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$reflectionClass = new \ReflectionClass($class); |
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if (!$reflectionClass->isInstantiable()) { |
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throw new NotInstantiableException($class); |
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} |
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$constructor = $reflectionClass->getConstructor(); |
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return $constructor === null ? [] : $this->resolveFunction($constructor); |
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} |
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private function resolveFunction(\ReflectionFunctionAbstract $reflectionFunction): array |
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{ |
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$result = []; |
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foreach ($reflectionFunction->getParameters() as $parameter) { |
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$result[] = $this->resolveParameter($parameter); |
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} |
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return $result; |
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} |
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private function resolveParameter(\ReflectionParameter $parameter): DependencyInterface |
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{ |
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$type = $parameter->getType(); |
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$hasDefault = $parameter->isOptional() || $parameter->isDefaultValueAvailable() || (isset($type) && $type->allowsNull()); |
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if (!$hasDefault && $type === null) { |
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return new InvalidDependency(); |
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} |
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// Our parameter has a class type hint |
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if ($type !== null && !$type->isBuiltin()) { |
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return new ClassDependency($type->getName(), $type->allowsNull()); |
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} |
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// Our parameter does not have a class type hint and either has a default value or is nullable. |
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return new ValueDependency($parameter->isDefaultValueAvailable() ? $parameter->getDefaultValue() : null); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function resolveCallable(callable $callable): array |
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{ |
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return $this->resolveFunction(new \ReflectionFunction(\Closure::fromCallable($callable))); |
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} |
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} |
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yiisoft /
di
