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/*
* Copyright (c) 2019 PANTHEON.tech.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef EVENTRECIVERBASE_H
#define EVENTRECIVERBASE_H
#include <exception>
#include <iostream>
class EventReceiverBase
{
public:
virtual ~EventReceiverBase() {}
};
template<typename T>
class EventReceiver : public virtual EventReceiverBase
{
public:
virtual void receiveWriteEvent(T *psender) = 0;
};
class EventSender
{
public:
template<typename T>
void registerReciver(T *receiver) {
pReceiver = receiver;
}
void registerStream(void *stream) {
this->stream = stream;
}
void *getStream() {
return stream;
}
template<typename T>
void sendEvent(T* pSender) {
if (nullptr == pReceiver) {
throw std::runtime_error("Receiver is not register.");
}
EventReceiver<T> *pCastedReceiver =
dynamic_cast<EventReceiver<T>*>(pReceiver);
pCastedReceiver->receiveWriteEvent(pSender);
}
private:
EventReceiverBase *pReceiver = nullptr;
void *stream = nullptr;
};
template<typename T>
class BaseSender : public virtual EventSender
{
public:
void send() {
sendEvent((T*) this);
}
};
#endif // EVENTRECIVERBASE_H
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