2020-01-17 04:09:32 +00:00
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/*
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* Copyright (C) 2019 Apple Inc. 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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (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 <type_traits>
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#define OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, op, enableExpression) \
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template<typename T> \
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constexpr auto operator op(enumName enumEntry, T value) -> std::enable_if_t<(enableExpression), T> \
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{ \
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return static_cast<T>(enumEntry) op value; \
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} \
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\
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template<typename T> \
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constexpr auto operator op(T value, enumName enumEntry) -> std::enable_if_t<(enableExpression), T> \
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{ \
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return value op static_cast<T>(enumEntry); \
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} \
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#define OVERLOAD_MATH_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, enableExpression) \
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OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, +, enableExpression) \
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OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, -, enableExpression) \
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OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, *, enableExpression) \
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OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, /, enableExpression) \
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OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, %, enableExpression) \
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#define OVERLOAD_MATH_OPERATORS_FOR_ENUM_CLASS_WITH_INTEGRALS(enumName) OVERLOAD_MATH_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, std::is_integral_v<T>)
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#define OVERLOAD_RELATIONAL_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, enableExpression) \
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OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, ==, enableExpression) \
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OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, !=, enableExpression) \
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OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, <, enableExpression) \
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OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, <=, enableExpression) \
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OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, >, enableExpression) \
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OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, >=, enableExpression) \
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#define OVERLOAD_RELATIONAL_OPERATORS_FOR_ENUM_CLASS_WITH_INTEGRALS(enumName) OVERLOAD_RELATIONAL_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, std::is_integral_v<T>)
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2020-04-18 21:45:34 +00:00
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#define OVERLOAD_BITWISE_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, enableExpression) \
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OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, |, enableExpression) \
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OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, &, enableExpression) \
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OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, ^, enableExpression) \
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#define OVERLOAD_BITWISE_OPERATORS_FOR_ENUM_CLASS_WITH_INTERGRALS(enumName) OVERLOAD_BITWISE_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, std::is_integral_v<T>)
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