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<?php |
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namespace Preetender\Routing; |
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use League\Container\Exception\ContainerException; |
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use Preetender\Routing\Response\ExecuteResponse; |
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/** |
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* Trait RouteReflection |
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* @package Preetender\Routing |
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*/ |
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trait RouteReflection |
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{ |
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/** @var array */ |
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protected static $numberOfParameters = []; |
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/** @var */ |
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protected static $reflectionObject; |
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/** @var null */ |
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protected static $resolveMethodName = null; |
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/** |
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* ... |
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* |
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* @return mixed |
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*/ |
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protected function handleRequestCallable() |
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{ |
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static::createReflection(new \ReflectionFunction($this->getCallable())); |
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$call = call_user_func_array($this->callable, static::resolveParameters()); |
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return ExecuteResponse::factory($call, $this->request, $this->response); |
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} |
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/** |
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* ... |
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* |
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* @return mixed |
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*/ |
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protected function handleRequestController() |
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{ |
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$attributes = RouteController::prepare($this->getCallable()); |
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static::createReflection(new \ReflectionClass($attributes['class']), $attributes['method']); |
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$call = call_user_func_array([$attributes['class'], $attributes['method']], static::resolveParameters()); |
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return ExecuteResponse::factory($call, $this->request, $this->response); |
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} |
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/** |
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* @param object $object |
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* @param string|null $method |
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*/ |
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protected static function createReflection($object, string $method = null) |
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{ |
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static::$reflectionObject = $object; |
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static::$resolveMethodName = $method; |
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} |
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/** |
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* @param int $position |
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* @return mixed |
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*/ |
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protected static function getPointersAndReturnRequired(int $position) |
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{ |
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return static::$parameters[ array_flip( static::$numberOfParameters)[$position] ]; |
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} |
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/** |
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* ... |
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* @return array |
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*/ |
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protected static function resolveParameters() |
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{ |
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$attributes = []; |
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$parameters = static::getParametersObject(); |
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if(count($parameters) > 0) { |
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foreach ($parameters as $parameter) { |
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/** @var \ReflectionParameter $parameter */ |
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if(!$parameter->getClass()) { |
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static::$numberOfParameters[] = $parameter->getPosition(); |
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$attributes[$parameter->getPosition()] = static::getPointersAndReturnRequired($parameter->getPosition()); |
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continue; |
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} |
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$className = $parameter->getClass()->getName(); |
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if(static::checkClassRegisterContainer($className)) { |
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$attributes[$parameter->getPosition()] = Kernel::getContainer()->get($className); |
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} |
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} |
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} |
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return $attributes; |
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} |
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/** |
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* Check whether injected class is registered in container. |
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* |
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* @param string $className |
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* @return bool |
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*/ |
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protected static function checkClassRegisterContainer(string $className) |
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{ |
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if(!Kernel::getContainer()->has($className)) { |
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throw new ContainerException("Class [{$className}] not registered in the container."); |
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} |
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return true; |
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} |
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/** |
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* Get all parameters to object |
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* |
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* @return mixed |
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*/ |
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protected static function getParametersObject() |
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{ |
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if( static::$reflectionObject instanceof \ReflectionClass) { |
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$method = static::$reflectionObject->getMethod( static::$resolveMethodName ); |
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return $method->getParameters(); |
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} |
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if ( static::$reflectionObject instanceof \ReflectionFunction) { |
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return static::$reflectionObject->getParameters(); |
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} |
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} |
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} |
This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idable
provides a methodequalsId
that in turn relies on the methodgetId()
. If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()
as an abstract method to the trait will make sure it is available.