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117 lines
3.3 KiB
C++
117 lines
3.3 KiB
C++
/*
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* Copyright (C) Nemirtingas
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* This file is part of System.
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*
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* System is free software; you can redistribute it
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* and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* System is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with System; if not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <type_traits>
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namespace System {
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template<typename Enum>
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struct EnableBitMaskOperators
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{
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static constexpr bool enable = false;
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};
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template<typename T>
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constexpr typename std::underlying_type<T>::type GetEnumValue(T enum_value)
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{
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return static_cast<typename std::underlying_type<T>::type>(enum_value);
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}
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}
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template<typename Enum>
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constexpr typename std::enable_if<System::EnableBitMaskOperators<Enum>::enable, Enum>::type
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operator |(Enum lhs, Enum rhs)
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{
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using underlying = typename std::underlying_type<Enum>::type;
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return static_cast<Enum> (
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static_cast<underlying>(lhs) |
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static_cast<underlying>(rhs)
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);
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}
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template<typename Enum>
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constexpr typename std::enable_if<System::EnableBitMaskOperators<Enum>::enable, Enum>::type
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operator &(Enum lhs, Enum rhs)
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{
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using underlying = typename std::underlying_type<Enum>::type;
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return static_cast<Enum> (
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static_cast<underlying>(lhs) &
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static_cast<underlying>(rhs)
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);
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}
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template<typename Enum>
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constexpr typename std::enable_if<System::EnableBitMaskOperators<Enum>::enable, Enum>::type
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operator ^(Enum lhs, Enum rhs)
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{
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using underlying = typename std::underlying_type<Enum>::type;
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return static_cast<Enum> (
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static_cast<underlying>(lhs) ^
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static_cast<underlying>(rhs)
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);
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}
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template<typename Enum>
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constexpr typename std::enable_if<System::EnableBitMaskOperators<Enum>::enable, Enum>::type
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operator ~(Enum lhs)
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{
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using underlying = typename std::underlying_type<Enum>::type;
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return static_cast<Enum> (~static_cast<underlying>(lhs));
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}
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template<typename Enum>
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constexpr typename std::enable_if<System::EnableBitMaskOperators<Enum>::enable, Enum>::type&
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operator |=(Enum& lhs, Enum rhs)
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{
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lhs = lhs | rhs;
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return lhs;
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}
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template<typename Enum>
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constexpr typename std::enable_if<System::EnableBitMaskOperators<Enum>::enable, Enum>::type&
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operator &=(Enum& lhs, Enum rhs)
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{
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lhs = lhs & rhs;
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return lhs;
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}
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template<typename Enum>
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constexpr typename std::enable_if<System::EnableBitMaskOperators<Enum>::enable, Enum>::type&
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operator ^=(Enum& lhs, Enum rhs)
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{
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lhs = lhs ^ rhs;
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return lhs;
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}
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template<typename Enum>
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constexpr typename std::enable_if<System::EnableBitMaskOperators<Enum>::enable, bool>::type
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operator !(Enum lhs)
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{
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using underlying = typename std::underlying_type<Enum>::type;
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return !static_cast<underlying>(lhs);
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}
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#define UTILS_ENABLE_BITMASK_OPERATORS(T) \
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template<> \
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struct System::EnableBitMaskOperators<T> \
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{ \
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static constexpr bool enable = true; \
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}
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