mirror of
https://github.com/DarkMatterCore/nxdumptool.git
synced 2024-11-26 20:22:17 +00:00
80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
/*
|
|
* scope_guard.hpp
|
|
*
|
|
* Copyright (c) 2018-2021, SciresM.
|
|
* Copyright (c) 2020-2023, DarkMatterCore <pabloacurielz@gmail.com>.
|
|
*
|
|
* Scope guard logic lovingly taken from Andrei Alexandrescu's "Systemic Error Handling in C++".
|
|
*
|
|
* This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
|
|
*
|
|
* nxdumptool is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* nxdumptool is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#ifndef __SCOPE_GUARD_HPP__
|
|
#define __SCOPE_GUARD_HPP__
|
|
|
|
#include "defines.h"
|
|
|
|
#define SCOPE_GUARD ::nxdt::utils::ScopeGuardOnExit() + [&]() ALWAYS_INLINE_LAMBDA
|
|
#define ON_SCOPE_EXIT auto ANONYMOUS_VARIABLE(SCOPE_EXIT_STATE_) = SCOPE_GUARD
|
|
|
|
namespace nxdt::utils {
|
|
template<class F>
|
|
class ScopeGuard {
|
|
NON_COPYABLE(ScopeGuard);
|
|
|
|
private:
|
|
F f;
|
|
bool active;
|
|
|
|
public:
|
|
constexpr ALWAYS_INLINE ScopeGuard(F f) : f(std::move(f)), active(true) {}
|
|
|
|
constexpr ALWAYS_INLINE ~ScopeGuard()
|
|
{
|
|
if (active) f();
|
|
}
|
|
|
|
constexpr ALWAYS_INLINE void Cancel()
|
|
{
|
|
active = false;
|
|
}
|
|
|
|
constexpr ALWAYS_INLINE ScopeGuard(ScopeGuard&& rhs) : f(std::move(rhs.f)), active(rhs.active)
|
|
{
|
|
rhs.Cancel();
|
|
}
|
|
|
|
ScopeGuard &operator=(ScopeGuard&& rhs) = delete;
|
|
};
|
|
|
|
template<class F>
|
|
constexpr ALWAYS_INLINE ScopeGuard<F> MakeScopeGuard(F f)
|
|
{
|
|
return ScopeGuard<F>(std::move(f));
|
|
}
|
|
|
|
enum class ScopeGuardOnExit {};
|
|
|
|
template <typename F>
|
|
constexpr ALWAYS_INLINE ScopeGuard<F> operator+(ScopeGuardOnExit, F&& f)
|
|
{
|
|
return ScopeGuard<F>(std::forward<F>(f));
|
|
}
|
|
}
|
|
|
|
#endif /* __SCOPE_GUARD_HPP__ */
|