woblight
46 lines
1.7 KiB
C++
46 lines
1.7 KiB
C++
/* Copyright 2019 WobLight
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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 <http://www.gnu.org/licenses/>.
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*/
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#ifndef UTILS_H
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#define UTILS_H
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#include <memory>
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template <class T>
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struct AutoPtr {
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using disposer_t = void(*)(T*);
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T *pointer = nullptr;
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disposer_t disposer;
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AutoPtr(disposer_t d) noexcept : disposer(d){ }
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AutoPtr(const AutoPtr &other) = delete;
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AutoPtr(AutoPtr &&other) noexcept : pointer(std::move(other.pointer)), disposer(std::forward<disposer_t>(other.disposer)) { other.pointer = nullptr; }
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AutoPtr(T* p, disposer_t d) noexcept : pointer(p), disposer(d){ }
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void reset(T* t = nullptr) { disposer(pointer); pointer = t; }
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~AutoPtr(){ disposer(pointer); }
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AutoPtr& operator =(AutoPtr &&other){ disposer(pointer); pointer = std::move(other.pointer); disposer(std::move(other.disposer)); other.pointer = nullptr; return *this; }
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AutoPtr& operator =(const AutoPtr &other) = delete ;
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operator T*&() noexcept { return pointer; }
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T** operator &() noexcept { return &pointer; }
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bool operator !() noexcept { return !pointer; }
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T*& operator ->() noexcept { return pointer; }
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};
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#endif // UTILS_H
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