enum class lexeme : std::uint8_t {
    hash,
};

to_string: (e:lexeme) -> auto = {
    return inspect (e) -> std::string {
        is lexeme::hash = "hash";
        is _ = "INTERNAL_ERROR";
    };
}

[[nodiscard]] auto to_string(cpp2::in<lexeme> e) -> auto{
    return [&] () -> std::string { auto&& __expr = (e);
        if (cpp2::is<lexeme::hash>(__expr)) { if constexpr( requires{"hash";} ) if constexpr( std::is_convertible_v<CPP2_TYPEOF("hash"),std::string> ) return "hash"; else return std::string{}; else return std::string{}; }
        else return "INTERNAL_ERROR"; }
    ()
; }