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Common
FlagGuard.hpp
Go to the documentation of this file.
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/*
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* Copyright (c) 2017 Louis Langholtz https://github.com/louis-langholtz/PlayRho
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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*/
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#ifndef PLAYRHO_COMMON_FLAGGUARD_HPP
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#define PLAYRHO_COMMON_FLAGGUARD_HPP
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#include <type_traits>
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namespace
playrho
{
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template
<
typename
T>
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class
FlagGuard
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{
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public
:
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FlagGuard
(T& flag, T value) : m_flag(flag), m_value(value)
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{
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static_assert(std::is_unsigned<T>::value,
"Unsigned type required"
);
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m_flag |= m_value;
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}
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FlagGuard
(
const
FlagGuard<T>
& value) =
default
;
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FlagGuard
(
FlagGuard<T>
&& value) noexcept =
default
;
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FlagGuard<T>
&
operator=
(
const
FlagGuard<T>
& value) =
default
;
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FlagGuard<T>
&
operator=
(
FlagGuard<T>
&& value) noexcept =
default
;
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~FlagGuard
() noexcept
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{
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m_flag &= ~m_value;
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}
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FlagGuard
() =
delete
;
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private
:
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T& m_flag;
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T m_value;
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};
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}
// namespace playrho
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#endif // PLAYRHO_COMMON_FLAGGUARD_HPP