# HG changeset patch
# User David Demelier <markand@malikania.fr>
# Date 1511625713 -3600
# Node ID 525f246d632dd83982cd393429c37764e6011a87
# Parent  f1ad428208d3de00b2d3ad9335252ca63f890ea9
Common: get rid of signals.hpp

diff -r f1ad428208d3 -r 525f246d632d libcommon/CMakeLists.txt
--- a/libcommon/CMakeLists.txt	Sat Nov 25 17:00:24 2017 +0100
+++ b/libcommon/CMakeLists.txt	Sat Nov 25 17:01:53 2017 +0100
@@ -29,7 +29,6 @@
     ${libcommon_SOURCE_DIR}/irccd/network_errc.hpp
     ${libcommon_SOURCE_DIR}/irccd/network_stream.hpp
     ${libcommon_SOURCE_DIR}/irccd/options.hpp
-    ${libcommon_SOURCE_DIR}/irccd/signals.hpp
     ${libcommon_SOURCE_DIR}/irccd/string_util.hpp
     ${libcommon_SOURCE_DIR}/irccd/system.hpp
     ${libcommon_SOURCE_DIR}/irccd/util.hpp
diff -r f1ad428208d3 -r 525f246d632d libcommon/irccd/signals.hpp
--- a/libcommon/irccd/signals.hpp	Sat Nov 25 17:00:24 2017 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,170 +0,0 @@
-/*
- * signals.h -- synchronous observer mechanism
- *
- * Copyright (c) 2013-2017 David Demelier <markand@malikania.fr>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#ifndef IRCCD_SIGNALS_H
-#define IRCCD_SIGNALS_H
-
-#include <functional>
-#include <stack>
-#include <unordered_map>
-#include <vector>
-
-/**
- * \file signals.hpp
- * \brief Similar Qt signal subsystem for irccd
- */
-
-namespace irccd {
-
-/**
- * \brief Stores the reference to the callable
- *
- * This class can be stored to remove a registered function from a Signal, be careful to not mix connections between different signals as
- * they are just referenced by ids.
- */
-class SignalConnection {
-private:
-    unsigned m_id;
-
-public:
-    /**
-     * Create a signal connection.
-     *
-     * \param id the id
-     */
-    inline SignalConnection(unsigned id) noexcept
-        : m_id(id)
-    {
-    }
-
-    /**
-     * Get the reference object.
-     *
-     * \return the id
-     */
-    inline unsigned id() const noexcept
-    {
-        return m_id;
-    }
-};
-
-/**
- * \brief Stores and call registered functions
- *
- * This class is intended to be use as a public field in the desired object.
- *
- * The user just have to call one of connect(), disconnect() or the call
- * operator to use this class.
- *
- * It stores the callable as std::function so type-erasure is complete.
- *
- * The user is responsible of taking care that the object is still alive
- * in case that the function takes a reference to the object.
- */
-template <typename... Args>
-class Signal {
-private:
-    using Function = std::function<void (Args...)>;
-    using FunctionMap = std::unordered_map<unsigned, Function>;
-    using Stack = std::stack<unsigned>;
-
-    FunctionMap m_functions;
-    Stack m_stack;
-    unsigned m_max{0};
-
-public:
-    /**
-     * Register a new function to the signal.
-     *
-     * \param function the function
-     * \return the connection in case you want to remove it
-     */
-    inline SignalConnection connect(Function function) noexcept
-    {
-        unsigned id;
-
-        if (!m_stack.empty()) {
-            id = m_stack.top();
-            m_stack.pop();
-        } else
-            id = m_max ++;
-
-        m_functions.emplace(id, std::move(function));
-
-        return SignalConnection{id};
-    }
-
-    /**
-     * Disconnect a connection.
-     *
-     * \param connection the connection
-     * \warning Be sure that the connection belongs to that signal
-     */
-    inline void disconnect(const SignalConnection &connection) noexcept
-    {
-        auto value = m_functions.find(connection.id());
-
-        if (value != m_functions.end()) {
-            m_functions.erase(connection.id());
-            m_stack.push(connection.id());
-        }
-    }
-
-    /**
-     * Remove all registered functions.
-     */
-    inline void clear()
-    {
-        m_functions.clear();
-        m_max = 0;
-
-        while (!m_stack.empty())
-            m_stack.pop();
-    }
-
-    /**
-     * Call every functions.
-     *
-     * \param args the arguments to pass to the signal
-     */
-    void operator()(Args... args) const
-    {
-        /*
-         * Make a copy of the ids before iterating because the callbacks may eventually remove or modify the list.
-         */
-        std::vector<unsigned> ids;
-
-        for (auto &pair : m_functions)
-            ids.push_back(pair.first);
-
-        /*
-         * Now iterate while checking if the next id is still available, however if any new signals were added while iterating, they
-         * will not be called immediately.
-         */
-        for (unsigned i : ids) {
-            auto it = m_functions.find(i);
-
-            if (it != m_functions.end())
-                it->second(args...);
-        }
-    }
-};
-
-} // !irccd
-
-#endif // !IRCCD_SIGNALS_H