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/*
* Copyright (c) 2021, Brian Gianforcaro <b.gianfo@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "AK/StdLibExtras.h"
// Enables bitwise operators for the specified Enum type.
//
#define AK_ENUM_BITWISE_OPERATORS(Enum) \
_AK_ENUM_BITWISE_OPERATORS_INTERNAL(Enum, )
// Enables bitwise operators for the specified Enum type, this
// version is meant for use on enums which are private to the
// containing type.
//
#define AK_ENUM_BITWISE_FRIEND_OPERATORS(Enum) \
_AK_ENUM_BITWISE_OPERATORS_INTERNAL(Enum, friend)
#define _AK_ENUM_BITWISE_OPERATORS_INTERNAL(Enum, Prefix) \
\
[[nodiscard]] Prefix constexpr inline Enum operator|(Enum lhs, Enum rhs) \
{ \
using Type = UnderlyingType<Enum>; \
return static_cast<Enum>( \
static_cast<Type>(lhs) | static_cast<Type>(rhs)); \
} \
\
[[nodiscard]] Prefix constexpr inline Enum operator&(Enum lhs, Enum rhs) \
{ \
using Type = UnderlyingType<Enum>; \
return static_cast<Enum>( \
static_cast<Type>(lhs) & static_cast<Type>(rhs)); \
} \
\
[[nodiscard]] Prefix constexpr inline Enum operator^(Enum lhs, Enum rhs) \
{ \
using Type = UnderlyingType<Enum>; \
return static_cast<Enum>( \
static_cast<Type>(lhs) ^ static_cast<Type>(rhs)); \
} \
\
[[nodiscard]] Prefix constexpr inline Enum operator~(Enum rhs) \
{ \
using Type = UnderlyingType<Enum>; \
return static_cast<Enum>( \
~static_cast<Type>(rhs)); \
} \
\
Prefix constexpr inline Enum& operator|=(Enum& lhs, Enum rhs) \
{ \
using Type = UnderlyingType<Enum>; \
lhs = static_cast<Enum>( \
static_cast<Type>(lhs) | static_cast<Type>(rhs)); \
return lhs; \
} \
\
Prefix constexpr inline Enum& operator&=(Enum& lhs, Enum rhs) \
{ \
using Type = UnderlyingType<Enum>; \
lhs = static_cast<Enum>( \
static_cast<Type>(lhs) & static_cast<Type>(rhs)); \
return lhs; \
} \
\
Prefix constexpr inline Enum& operator^=(Enum& lhs, Enum rhs) \
{ \
using Type = UnderlyingType<Enum>; \
lhs = static_cast<Enum>( \
static_cast<Type>(lhs) ^ static_cast<Type>(rhs)); \
return lhs; \
} \
\
Prefix constexpr inline bool has_flag(Enum value, Enum mask) \
{ \
using Type = UnderlyingType<Enum>; \
return static_cast<Type>(value & mask) != 0; \
}
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