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a6e4482080
This commit makes the user-facing StdLibExtras templates and utilities arguably more nice-looking by removing the need to reach into the wrapper structs generated by them to get the value/type needed. The C++ standard library had to invent `_v` and `_t` variants (likely because of backwards compat), but we don't need to cater to any codebase except our own, so might as well have good things for free. :^)
101 lines
6.3 KiB
C
101 lines
6.3 KiB
C
/*
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* Copyright (c) 2021, Brian Gianforcaro <b.gianfo@gmail.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "AK/StdLibExtras.h"
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// Enables bitwise operators for the specified Enum type.
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//
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#define AK_ENUM_BITWISE_OPERATORS(Enum) \
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_AK_ENUM_BITWISE_OPERATORS_INTERNAL(Enum, )
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// Enables bitwise operators for the specified Enum type, this
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// version is meant for use on enums which are private to the
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// containing type.
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//
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#define AK_ENUM_BITWISE_FRIEND_OPERATORS(Enum) \
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_AK_ENUM_BITWISE_OPERATORS_INTERNAL(Enum, friend)
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#define _AK_ENUM_BITWISE_OPERATORS_INTERNAL(Enum, Prefix) \
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\
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[[nodiscard]] Prefix constexpr inline Enum operator|(Enum lhs, Enum rhs) \
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{ \
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using Type = UnderlyingType<Enum>; \
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return static_cast<Enum>( \
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static_cast<Type>(lhs) | static_cast<Type>(rhs)); \
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} \
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\
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[[nodiscard]] Prefix constexpr inline Enum operator&(Enum lhs, Enum rhs) \
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{ \
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using Type = UnderlyingType<Enum>; \
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return static_cast<Enum>( \
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static_cast<Type>(lhs) & static_cast<Type>(rhs)); \
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} \
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\
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[[nodiscard]] Prefix constexpr inline Enum operator^(Enum lhs, Enum rhs) \
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{ \
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using Type = UnderlyingType<Enum>; \
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return static_cast<Enum>( \
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static_cast<Type>(lhs) ^ static_cast<Type>(rhs)); \
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} \
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\
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[[nodiscard]] Prefix constexpr inline Enum operator~(Enum rhs) \
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{ \
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using Type = UnderlyingType<Enum>; \
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return static_cast<Enum>( \
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~static_cast<Type>(rhs)); \
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} \
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\
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Prefix constexpr inline Enum& operator|=(Enum& lhs, Enum rhs) \
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{ \
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using Type = UnderlyingType<Enum>; \
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lhs = static_cast<Enum>( \
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static_cast<Type>(lhs) | static_cast<Type>(rhs)); \
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return lhs; \
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} \
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\
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Prefix constexpr inline Enum& operator&=(Enum& lhs, Enum rhs) \
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{ \
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using Type = UnderlyingType<Enum>; \
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lhs = static_cast<Enum>( \
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static_cast<Type>(lhs) & static_cast<Type>(rhs)); \
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return lhs; \
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} \
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\
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Prefix constexpr inline Enum& operator^=(Enum& lhs, Enum rhs) \
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{ \
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using Type = UnderlyingType<Enum>; \
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lhs = static_cast<Enum>( \
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static_cast<Type>(lhs) ^ static_cast<Type>(rhs)); \
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return lhs; \
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} \
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\
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Prefix constexpr inline bool has_flag(Enum value, Enum mask) \
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{ \
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using Type = UnderlyingType<Enum>; \
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return static_cast<Type>(value & mask) != 0; \
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}
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