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<?php |
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declare(strict_types=1); |
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namespace Cascader; |
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use Cascader\Exception\InvalidClassException; |
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use Cascader\Exception\InvalidOptionsException; |
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use Cascader\Exception\OptionNotSetException; |
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use ReflectionClass; |
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use ReflectionParameter; |
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use ReflectionType; |
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class Cascader |
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{ |
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/** |
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* @param string $className |
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* @param array $options |
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* |
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* @throws InvalidClassException |
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* @throws InvalidOptionsException |
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* |
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* @return object |
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*/ |
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public function create(string $className, array $options) |
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{ |
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$reflectionClass = $this->getReflectionClass($className); |
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$options = Options::fromArray($options); |
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$arguments = $this->marshalArguments($reflectionClass, $options); |
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return new $className(...$arguments); |
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} |
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protected function getReflectionClass(string $className) : ReflectionClass |
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{ |
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try { |
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$reflectionClass = new ReflectionClass($className); |
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} catch (\ReflectionException $ex) { |
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throw InvalidClassException::forNonExistingClass($className); |
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} |
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if (! $reflectionClass->isInstantiable()) { |
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throw InvalidClassException::forNonInstantiableClass($className); |
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} |
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return $reflectionClass; |
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} |
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protected function marshalArguments(ReflectionClass $reflectionClass, Options $options) : array |
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{ |
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$constructor = $reflectionClass->getConstructor(); |
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if (null === $constructor) { |
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return []; |
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} |
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$arguments = []; |
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$constructorParameters = $constructor->getParameters(); |
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foreach ($constructorParameters as $parameter) { |
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$arguments[] = $this->resolveArgument($parameter, $options); |
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} |
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return $arguments; |
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} |
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protected function resolveArgument(ReflectionParameter $parameter, Options $options) |
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{ |
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try { |
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$argument = $options->get($parameter->name); |
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if ((string)$parameter->getType() === 'array') { |
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return $this->resoleArrayArgument($argument); |
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} |
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if (null !== ($parameterType = $parameter->getType()) && $this->shouldResolveObjectArgument($parameterType, $argument)) { |
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$argument = $this->resolveObjectArgument((string) $parameterType, $argument); |
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} |
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return $argument; |
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} catch (OptionNotSetException $ex) { |
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if (! $parameter->isOptional()) { |
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throw InvalidOptionsException::forMissingMandatoryParameter($parameter); |
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} |
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return $parameter->getDefaultValue(); |
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} |
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} |
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protected function resoleArrayArgument(array $argument = []): array |
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{ |
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foreach ($argument as $k => $value) { |
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if (\is_array($value) && isset($value['__class__'])) { |
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$argument[$k] = $this->resolveObjectArgument('', $value); |
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} |
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} |
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return $argument; |
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} |
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protected function shouldResolveObjectArgument(ReflectionType $parameterType, $argument) : bool |
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{ |
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return !$parameterType->isBuiltin() && \is_array($argument); |
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} |
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protected function resolveObjectArgument(string $className, array $arguments) |
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{ |
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if (isset($arguments['__class__'])) { |
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$className = $arguments['__class__']; |
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unset($arguments['__class__']); |
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} |
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return $this->create($className, $arguments); |
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} |
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} |
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nikolaposa /
cascader
