EnumClassOperatorOverloads.h [plain text]
#pragma once
#include <type_traits>
#define OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, op, enableExpression) \
template<typename T> \
constexpr auto operator op(enumName enumEntry, T value) -> std::enable_if_t<(enableExpression), T> \
{ \
return static_cast<T>(enumEntry) op value; \
} \
\
template<typename T> \
constexpr auto operator op(T value, enumName enumEntry) -> std::enable_if_t<(enableExpression), T> \
{ \
return value op static_cast<T>(enumEntry); \
} \
#define OVERLOAD_MATH_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, +, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, -, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, *, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, /, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, %, enableExpression) \
#define OVERLOAD_MATH_OPERATORS_FOR_ENUM_CLASS_WITH_INTEGRALS(enumName) OVERLOAD_MATH_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, std::is_integral_v<T>)
#define OVERLOAD_RELATIONAL_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, ==, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, !=, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, <, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, <=, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, >, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, >=, enableExpression) \
#define OVERLOAD_RELATIONAL_OPERATORS_FOR_ENUM_CLASS_WITH_INTEGRALS(enumName) OVERLOAD_RELATIONAL_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, std::is_integral_v<T>)
#define OVERLOAD_BITWISE_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, |, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, &, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, ^, enableExpression) \
#define OVERLOAD_BITWISE_OPERATORS_FOR_ENUM_CLASS_WITH_INTERGRALS(enumName) OVERLOAD_BITWISE_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, std::is_integral_v<T>)