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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 ReflectionClass; |
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use ReflectionParameter; |
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class Cascader |
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{ |
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const ARGUMENT_CLASS = '__class__'; |
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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 = $this->resolveArguments($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 $ex) { |
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throw InvalidClassException::nonExistingClass($className); |
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} |
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if (! $reflectionClass->isInstantiable()) { |
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throw InvalidClassException::nonInstantiableClass($className); |
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} |
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return $reflectionClass; |
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} |
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protected function resolveArguments(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 $reflectionParameter, Options $options) |
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{ |
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$parameterAnalysis = new ParameterAnalysis($reflectionParameter, $options); |
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if (! $parameterAnalysis->hasArgument()) { |
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if (! $parameterAnalysis->isOptional()) { |
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throw InvalidOptionsException::missingMandatoryParameter($parameterAnalysis); |
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} |
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return $parameterAnalysis->getDefaultValue(); |
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} |
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$argument = $parameterAnalysis->getArgument(); |
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if ($parameterAnalysis->isArray()) { |
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return $this->resolveArrayArgument($argument); |
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} |
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if ($parameterAnalysis->isNestedObject()) { |
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return $this->createNestedObject($parameterAnalysis->getType(), $argument); |
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} |
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return $argument; |
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} |
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protected function resolveArrayArgument(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($value[self::ARGUMENT_CLASS])) { |
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$argument[$k] = $this->createNestedObject('', $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 createNestedObject(string $className, array $arguments) |
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{ |
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if (isset($arguments[self::ARGUMENT_CLASS])) { |
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$className = $arguments[self::ARGUMENT_CLASS]; |
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unset($arguments[self::ARGUMENT_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
