overload.h

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//
// Created by Nathan on 11/25/2024.
//
 
#ifndef OVERLOAD_H
#define OVERLOAD_H
 
namespace unlogic
{
    /*
     * Helper for std::visit provided by Andreas Fertig.
     * Apple-Clang 15 isn't C++23 compliant enough for the prettier solution, so C++17 style it is.
     * https://andreasfertig.blog/2023/07/visiting-a-stdvariant-safely/
     */
    template<class...>
    constexpr bool always_false_v = false;
 
    template<class... Ts>
    struct overload : Ts...
    {
        using Ts::operator()...;
 
        template<typename T>
        constexpr void operator()(T) const
        {
            static_assert(always_false_v<T>, "Unsupported type");
        }
    };
 
    template<class... Ts>
    overload(Ts...) -> overload<Ts...>;
} // namespace unlogic
 
#endif // OVERLOAD_H