From 34cab1f1c50047f2a82cbb2656921c2d88e39ee7 Mon Sep 17 00:00:00 2001 From: Egor Yusov Date: Thu, 29 Nov 2018 22:40:42 -0800 Subject: Improved type safety of different flag types --- Primitives/interface/FlagEnum.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 Primitives/interface/FlagEnum.h (limited to 'Primitives/interface') diff --git a/Primitives/interface/FlagEnum.h b/Primitives/interface/FlagEnum.h new file mode 100644 index 00000000..4b399990 --- /dev/null +++ b/Primitives/interface/FlagEnum.h @@ -0,0 +1,41 @@ +/* Copyright 2015-2018 Egor Yusov + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * 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 OF ANY PROPRIETARY RIGHTS. + * + * In no event and under no legal theory, whether in tort (including negligence), + * contract, or otherwise, unless required by applicable law (such as deliberate + * and grossly negligent acts) or agreed to in writing, shall any Contributor be + * liable for any damages, including any direct, indirect, special, incidental, + * or consequential damages of any character arising as a result of this License or + * out of the use or inability to use the software (including but not limited to damages + * for loss of goodwill, work stoppage, computer failure or malfunction, or any and + * all other commercial damages or losses), even if such Contributor has been advised + * of the possibility of such damages. + */ + +#pragma once + +#include "BasicTypes.h" + +template +using _UNDERLYING_ENUM_T = typename std::underlying_type::type; + +#define DEFINE_FLAG_ENUM_OPERATORS(ENUMTYPE)\ +extern "C++"\ +{\ +inline ENUMTYPE& operator |= (ENUMTYPE& a, ENUMTYPE b) throw() { return reinterpret_cast(reinterpret_cast<_UNDERLYING_ENUM_T&>(a) |= static_cast<_UNDERLYING_ENUM_T>(b)); } \ +inline ENUMTYPE& operator &= (ENUMTYPE& a, ENUMTYPE b) throw() { return reinterpret_cast(reinterpret_cast<_UNDERLYING_ENUM_T&>(a) &= static_cast<_UNDERLYING_ENUM_T>(b)); } \ +inline ENUMTYPE& operator ^= (ENUMTYPE& a, ENUMTYPE b) throw() { return reinterpret_cast(reinterpret_cast<_UNDERLYING_ENUM_T&>(a) ^= static_cast<_UNDERLYING_ENUM_T>(b)); } \ +inline constexpr ENUMTYPE operator | (ENUMTYPE a, ENUMTYPE b) throw() { return static_cast (static_cast<_UNDERLYING_ENUM_T >(a) | static_cast<_UNDERLYING_ENUM_T>(b)); } \ +inline constexpr ENUMTYPE operator & (ENUMTYPE a, ENUMTYPE b) throw() { return static_cast (static_cast<_UNDERLYING_ENUM_T >(a) & static_cast<_UNDERLYING_ENUM_T>(b)); } \ +inline constexpr ENUMTYPE operator ^ (ENUMTYPE a, ENUMTYPE b) throw() { return static_cast (static_cast<_UNDERLYING_ENUM_T >(a) ^ static_cast<_UNDERLYING_ENUM_T>(b)); } \ +inline constexpr ENUMTYPE operator ~ (ENUMTYPE a) throw() { return static_cast (~static_cast<_UNDERLYING_ENUM_T>(a)); } \ +} -- cgit v1.2.3