BitOperator.h

// Copyright (c) 2019-2020 Kiwano - Nomango
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
 
#pragma once
#include <type_traits>  // std::is_arithmetic
 
namespace kiwano
{
namespace bits
{
 
template <typename _Ty>
inline void Set(_Ty& old, _Ty flag)
{
    static_assert(std::is_arithmetic<_Ty>::value, "_Ty must be an arithmetic type");
    old |= flag;
}
 
template <typename _Ty>
inline void Unset(_Ty& old, _Ty flag)
{
    static_assert(std::is_arithmetic<_Ty>::value, "_Ty must be an arithmetic type");
    old &= ~flag;
}
 
template <typename _Ty>
inline bool Has(_Ty old, _Ty flag)
{
    static_assert(std::is_arithmetic<_Ty>::value, "_Ty must be an arithmetic type");
    return !!(old & flag);
}
 
}  // namespace bits
}  // namespace kiwano