From 8f0dda5eab181b0f14f2652b4e984aaaae3f258c Mon Sep 17 00:00:00 2001
From: rtk0c <mail.tianyig@gmail.com>
Date: Mon, 27 Jun 2022 18:27:13 -0700
Subject: Start from a clean slate

---
 core/src/Utils/Sigslot.hpp | 165 ---------------------------------------------
 1 file changed, 165 deletions(-)
 delete mode 100644 core/src/Utils/Sigslot.hpp

(limited to 'core/src/Utils/Sigslot.hpp')

diff --git a/core/src/Utils/Sigslot.hpp b/core/src/Utils/Sigslot.hpp
deleted file mode 100644
index 5638f12..0000000
--- a/core/src/Utils/Sigslot.hpp
+++ /dev/null
@@ -1,165 +0,0 @@
-#pragma once
-
-#include "Utils/fwd.hpp"
-
-#include <cstddef>
-#include <functional>
-#include <span>
-#include <utility>
-#include <vector>
-
-class SignalStub
-{
-public:
-	/// Non-template interface for Signal<T...> to implement (a barrier to stop template
-	/// arguments propagation).
-	class IWrapper
-	{
-	public:
-		virtual ~IWrapper() = default;
-		virtual void RemoveFunction(int id) = 0;
-	};
-
-	enum
-	{
-		InvalidId = -1,
-	};
-
-	struct Connection
-	{
-		SlotGuard* guard;
-		int slotId;
-		int id = InvalidId; // If `InvalidId`, then this "spot" is unused
-
-		bool IsOccupied() const;
-	};
-
-private:
-	std::vector<Connection> mConnections;
-	IWrapper* mWrapper;
-
-private:
-	template <class...>
-	friend class Signal;
-	friend class SlotGuard;
-
-	SignalStub(IWrapper& wrapper);
-	~SignalStub();
-
-	SignalStub(const SignalStub&) = delete;
-	SignalStub& operator=(const SignalStub&) = delete;
-	SignalStub(SignalStub&&) = default;
-	SignalStub& operator=(SignalStub&&) = default;
-
-	std::span<const Connection> GetConnections() const;
-	Connection& InsertConnection(SlotGuard* guard = nullptr);
-	void RemoveConnection(int id);
-	void RemoveConnectionFor(SlotGuard& guard);
-	void RemoveAllConnections();
-};
-
-template <class... TArgs>
-class Signal : public SignalStub::IWrapper
-{
-private:
-	// Must be in this order so that mFunctions is still intact when mStub's destructor runs
-	std::vector<std::function<void(TArgs...)>> mFunctions;
-	SignalStub mStub;
-
-public:
-	Signal()
-		: mStub(*this)
-	{
-	}
-
-	virtual ~Signal() = default;
-
-	Signal(const Signal&) = delete;
-	Signal& operator=(const Signal&) = delete;
-	Signal(Signal&&) = default;
-	Signal& operator=(Signal&&) = default;
-
-	void operator()(TArgs... args)
-	{
-		for (auto& conn : mStub.GetConnections()) {
-			if (conn.IsOccupied()) {
-				mFunctions[conn.id](std::forward<TArgs>(args)...);
-			}
-		}
-	}
-
-	template <class TFunction>
-	int Connect(TFunction slot)
-	{
-		auto& conn = mStub.InsertConnection();
-		mFunctions.resize(std::max(mFunctions.size(), (size_t)conn.id + 1));
-		mFunctions[conn.id] = std::move(slot);
-		return conn.id;
-	}
-
-	template <class TFunction>
-	int Connect(SlotGuard& guard, TFunction slot)
-	{
-		auto& conn = mStub.InsertConnection(&guard);
-		mFunctions.resize(std::max(mFunctions.size(), (size_t)conn.id + 1));
-		mFunctions[conn.id] = std::move(slot);
-		return conn.id;
-	}
-
-	void Disconnect(int id)
-	{
-		mStub.RemoveConnection(id);
-	}
-
-	void DisconnectFor(SlotGuard& guard)
-	{
-		mStub.RemoveConnectionFor(guard);
-	}
-
-	void DisconnectAll()
-	{
-		mStub.RemoveAllConnections();
-	}
-
-	virtual void RemoveFunction(int id)
-	{
-		mFunctions[id] = {};
-	}
-};
-
-/// Automatic disconnection mechanism for Signal<>.
-/// Bind connection to this guard by using the Connect(SlotGuard&, TFunction) overload.
-/// Either DisconnectAll() or the destructor disconnects all connections bound to this guard.
-class SlotGuard
-{
-private:
-	struct Connection
-	{
-		SignalStub* stub = nullptr;
-		int stubId = SignalStub::InvalidId;
-	};
-	std::vector<Connection> mConnections;
-
-public:
-	friend class SignalStub;
-	SlotGuard();
-	~SlotGuard();
-
-	SlotGuard(const SlotGuard&) = delete;
-	SlotGuard& operator=(const SlotGuard&) = delete;
-	SlotGuard(SlotGuard&&) = default;
-	SlotGuard& operator=(SlotGuard&&) = default;
-
-	/// DisconnectBySource all connection associated with this SlotGuard.
-	void DisconnectAll();
-
-private:
-	/// \return Slot id.
-	int InsertConnection(SignalStub& stub, int stubId);
-	/// Remove the connection data in this associated with slotId. This does not invoke
-	/// the connections' stub's RemoveConnection function.
-	void RemoveConnection(int slotId);
-	/// DisconnectBySource all connections from the given stub associated with this SlotGuard.
-	/// Implementation for SignalStub::RemoveConnectionsFor(SlotGuard&)
-	void RemoveConnectionFor(SignalStub& stub);
-};
-- 
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