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3 Commits
Author | SHA1 | Date | |
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5a1d864e15 | |||
e01acbed26 | |||
27af86ebf2 |
@@ -1,4 +1,4 @@
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cmake_minimum_required(VERSION 3.18)
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cmake_minimum_required(VERSION 3.27)
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project(Event
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VERSION 1.0
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LANGUAGES CXX
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@@ -1,27 +1,31 @@
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/// @file Event.hpp
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/// @description Templated Event Hook Class modeled after C# events
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/// @file BasicEvent.hpp
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/// @description Templated BasicEvent Hook Class modeled after C# events
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/// @author Josh O'Leary - Redacted Software
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/// @revision 3
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/// @lastedit 2024-02-21
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/// @lastedit 2024-06-01
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/// @license Unlicense - Public Domain
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#pragma once
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#include <chrono>
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#include <functional>
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#include <memory>
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// TODO: Document & Explain this
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// TODO: ThreadSafeEvent / AsyncEvent version of the class.
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// TODO: ConsumableEvent - a version that can be "consumed" by a callback by returning true. It will be sunk and not passed to further callbacks.
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#include <EventConnection.h>
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///
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template <typename delegate, typename ... Args>
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class Connection;
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template <typename ... Args>
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class EventConnection;
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template <typename ... Args>
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class Event {
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/// BasicEvent is a templated class that can be used to raise events that can be listened in on
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/// at other points in a codebase without having to tightly couple the two pieces of code.
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/// @param delegate A type that can be invoked via operator() 'Call operator'.
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/// @param Args... The arguments that will be expected by this event and passed to it's delegate.
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template <typename delegate, typename ... Args>
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class BasicEvent {
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public:
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using delegate = std::function<void(Args...)>;
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using connection = EventConnection<Args ...>;
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using connection = Connection<delegate, Args ...>;
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using event_ptr = std::shared_ptr<connection>;
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public:
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void Await(Args& ... arg);
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@@ -35,28 +39,32 @@ private:
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uint64_t listenerCounter = 0;
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};
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template<typename... Args>
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EventConnection<Args...> Event<Args...>::operator+=(Event::delegate callback) { return Connect(callback); }
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template<typename delegate, typename... Args>
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Connection<delegate, Args...> BasicEvent<delegate, Args...>::operator+=(delegate callback) { return Connect(callback); }
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template<typename... Args>
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void Event<Args...>::operator()(Args... args) { Invoke(args...);}
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template<typename delegate, typename... Args>
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void BasicEvent<delegate, Args...>::operator()(Args... args) { Invoke(args...);}
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template <typename ... Args>
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void Event<Args...>::Invoke(Args... args) {
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template <typename delegate, typename ... Args>
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void BasicEvent<delegate, Args...>::Invoke(Args... args) {
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for (event_ptr &connection_ptr: this->listeners) {
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connection_ptr->Invoke(args...);
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}
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}
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template <typename ... Args>
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EventConnection<Args...> Event<Args...>::Connect(delegate callback)
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template <typename delegate, typename ... Args>
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Connection<delegate, Args...> BasicEvent<delegate, Args...>::Connect(delegate callback)
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{
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event_ptr retval(new connection(this, callback));
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this->listeners.push_back(retval);
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return *retval;
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}
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template <typename ... Args>
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void Event<Args...>::Disconnect(connection &conn) {
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template <typename delegate, typename ... Args>
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void BasicEvent<delegate, Args...>::Disconnect(connection &conn) {
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listeners.erase(std::remove(listeners.begin(), listeners.end(), 99), listeners.end());
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}
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}
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template <typename ... Args>
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using Event = BasicEvent<std::function<void(Args...)>, Args...>;
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@@ -1,4 +1,4 @@
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/// @file EventConnection.hpp
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/// @file Connection.hpp
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/// @description Callback handler for event connections
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/// @author Josh O'Leary - Redacted Software
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/// @revision 3
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@@ -10,32 +10,32 @@
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#include <functional>
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#include <Event.h>
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template <typename ... Args>
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class Event;
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template <typename delegate, typename ... Args>
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class BasicEvent;
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template <typename ... Args>
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class EventConnection {
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/// A type that represents a handle to an active event connection.
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template <typename delegate, typename ... Args>
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class Connection {
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private:
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using delegate = std::function<void(Args...)>;
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public:
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EventConnection(Event<Args...> *creator, delegate cb);
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Connection(BasicEvent<delegate, Args...> *creator, delegate cb);
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bool Disconnect(); // Breaks the event connection, but does not destroy the instance
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void Invoke(Args... e);
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private:
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Event<Args...> * owner;
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BasicEvent<delegate, Args...> * owner;
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delegate callback;
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bool active = true;
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};
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template<typename... Args>
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EventConnection<Args...>::EventConnection(Event<Args...> *creator, EventConnection::delegate cb) : owner(creator), callback(std::move(cb)) {}
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template<typename delegate, typename... Args>
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Connection<delegate, Args...>::Connection(BasicEvent<delegate, Args...> *creator, delegate cb) : owner(creator), callback(std::move(cb)) {}
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template <typename... Args>
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void EventConnection<Args...>::Invoke(Args... e) { callback(e...); }
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template <typename delegate, typename... Args>
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void Connection<delegate, Args...>::Invoke(Args... e) { callback(e...); }
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template <typename ... Args>
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bool EventConnection<Args...>::Disconnect() {
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template <typename delegate, typename ... Args>
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bool Connection<delegate, Args...>::Disconnect() {
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if (active) {
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owner->Disconnect(this);
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active = false;
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18
main.cpp
18
main.cpp
@@ -1,15 +1,25 @@
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#include <iostream>
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#include <functional>
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#include <Event.h>
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#include <EventConnection.h>
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void ProcessMessage(const std::string& message)
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{
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std::cout << "Received: " << message << std::endl;
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}
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// TODO: Event tests here.
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int main() {
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Event<std::string> OnMessage;
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Event<int> cum;
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cum += [] (int i) { std::cout << i+5 << std::endl; };
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cum.Invoke(69);
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BasicEvent<std::function<void(std::string)>, std::string> OnMessage;
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BasicEvent<std::function<void()>> VoidDelegate;
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bool run = true;
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@@ -24,8 +34,12 @@ int main() {
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std::string input;
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std::cin >> input;
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OnMessage.Invoke(input);
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VoidDelegate.Invoke();
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OnMessage(input);
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VoidDelegate();
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}
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return 0;
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}
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@@ -1 +1,3 @@
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#include <Event.h>
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#include <Event.h>
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