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https://github.com/Atmosphere-NX/Atmosphere.git
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60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* 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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#pragma once
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#include <stratosphere.hpp>
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namespace ams::fs {
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template<typename T>
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class ScopedSetter {
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NON_COPYABLE(ScopedSetter);
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private:
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T *m_ptr;
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T m_value;
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public:
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constexpr ALWAYS_INLINE ScopedSetter(T &p, T v) : m_ptr(std::addressof(p)), m_value(v) { /* ... */ }
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ALWAYS_INLINE ~ScopedSetter() {
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if (m_ptr) {
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*m_ptr = m_value;
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}
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}
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ALWAYS_INLINE ScopedSetter(ScopedSetter &&rhs) {
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m_ptr = rhs.ptr;
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m_value = rhs.value;
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rhs.Reset();
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}
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ALWAYS_INLINE ScopedSetter &operator=(ScopedSetter &&rhs) {
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m_ptr = rhs.ptr;
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m_value = rhs.value;
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rhs.Reset();
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return *this;
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}
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ALWAYS_INLINE void Set(T v) { m_value = v; }
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private:
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ALWAYS_INLINE void Reset() {
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m_ptr = nullptr;
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}
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};
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template<typename T>
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ALWAYS_INLINE ScopedSetter<T> MakeScopedSetter(T &p, T v) {
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return ScopedSetter<T>(p, v);
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}
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}
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