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<?php |
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/** |
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* This file is part of the Ray.Di package. |
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* |
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* @license http://opensource.org/licenses/MIT MIT |
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*/ |
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namespace Ray\Di; |
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use Ray\Aop\MethodInterceptor; |
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use Ray\Aop\MethodInvocation; |
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use Ray\Aop\ReflectionMethod; |
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use Ray\Di\Di\Assisted; |
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final class AssistedInterceptor implements MethodInterceptor |
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{ |
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/** |
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* @var InjectorInterface |
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*/ |
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private $injector; |
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/** |
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* @var MethodInvocationProvider |
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*/ |
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private $methodInvocationProvider; |
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public function __construct(InjectorInterface $injector, MethodInvocationProvider $methodInvocationProvider) |
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{ |
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$this->injector = $injector; |
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$this->methodInvocationProvider = $methodInvocationProvider; |
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} |
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/** |
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* Intercepts any method and injects instances of the missing arguments |
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* when they are type hinted |
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* |
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* @param MethodInvocation $invocation |
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* |
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* @return object |
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*/ |
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public function invoke(MethodInvocation $invocation) |
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{ |
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$method = $invocation->getMethod(); |
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$assisted = $method->getAnnotation('Ray\Di\Di\Assisted'); |
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/* @var \Ray\Di\Di\Assisted $assisted */ |
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$parameters = $method->getParameters(); |
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$arguments = $invocation->getArguments()->getArrayCopy(); |
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if ($assisted instanceof Assisted && $method instanceof ReflectionMethod) { |
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$this->methodInvocationProvider->set($invocation); |
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$arguments = $this->injectAssistedParameters($method, $assisted, $parameters, $arguments); |
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} |
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$invocation->getArguments()->exchangeArray($arguments); |
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return $invocation->proceed(); |
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} |
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/** |
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* @param ReflectionMethod $method |
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* @param \ReflectionParameter $parameter |
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* |
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* @return string |
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*/ |
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private function getName(ReflectionMethod $method, \ReflectionParameter $parameter) |
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{ |
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$named = $method->getAnnotation('Ray\Di\Di\Named'); |
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if (! $named) { |
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return Name::ANY; |
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} |
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parse_str($named->value, $names); |
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$paramName = $parameter->getName(); |
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if (isset($names[$paramName])) { |
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return $names[$paramName]; |
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} |
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return Name::ANY; |
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} |
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/** |
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* @param ReflectionMethod $method |
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* @param Assisted $assisted |
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* @param \ReflectionParameter[] $parameters |
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* @param array $arguments |
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* |
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* @return array |
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* |
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* @internal param int $cntArgs |
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*/ |
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public function injectAssistedParameters(ReflectionMethod $method, Assisted $assisted, array $parameters, array $arguments) |
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{ |
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foreach ($parameters as $parameter) { |
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if (! in_array($parameter->getName(), $assisted->values)) { |
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continue; |
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} |
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$hint = $parameter->getClass(); |
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$interface = $hint ? $hint->getName() : ''; |
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$name = $this->getName($method, $parameter); |
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$pos = $parameter->getPosition(); |
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$arguments[$pos] = $this->injector->getInstance($interface, $name); |
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} |
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return $arguments; |
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} |
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} |
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ray-di /
Ray.Di
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