54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
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/*
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* Nekolib: An extention to the standard libraries for ease of use
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* Copyright (C) 2018 Rebekah Rowe
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#pragma once
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namespace neko {
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// Use when you have a function that doesnt need the aditional functionality of
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// std::function The point of this is to be faster than std::function but retain
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// its usability Credits to fission, thanks bby <3
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template <typename>
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class Function;
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template <typename ret, typename... args>
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class Function<ret(args...)> {
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using FuncPtr = ret (*)(args...); // For std::function template like use
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public:
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#if defined(_MSC_VER) // msvc does some wierd things so we try to correct it
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// with this
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private:
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static ret init(args... a) { return ret(); }
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public:
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Function(FuncPtr func = init) : func(func), original(func) {}
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#else
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Function(FuncPtr func = [](args...) { return ret(); })
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: func(func), original(func) {}
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#endif
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inline auto operator()(args... a) { return func(a...); }
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inline void operator=(FuncPtr _func) { func = _func; }
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private:
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FuncPtr func = nullptr;
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const FuncPtr original;
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};
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} // namespace neko
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