Method get

extlibs/sol3/include/sol/sol.hpp:15193–15231

		template <typename T>
		decltype(auto) get(int index_offset = 0) const {
			using UT = meta::unqualified_t<T>;
			int target = index + index_offset;
			if constexpr (meta::is_optional_v<UT>) {
				using ValueType = typename UT::value_type;
				if constexpr (std::is_same_v<ValueType, error>) {
					if (valid()) {
						return UT();
					}
					return UT(error(detail::direct_error, stack::get<std::string>(L, target)));
				}
				else {
					if (!valid()) {
						return UT();
					}
					return stack::get<UT>(L, target);
				}
			}
			else {
				if constexpr (std::is_same_v<T, error>) {
#if defined(SOL_SAFE_PROXIES) && SOL_SAFE_PROXIES
					if (valid()) {
						type t = type_of(L, target);
						type_panic_c_str(L, target, t, type::none, "bad get from protected_function_result (is an error)");
					}
#endif // Check Argument Safety
					return error(detail::direct_error, stack::get<std::string>(L, target));
				}
				else {
#if defined(SOL_SAFE_PROXIES) && SOL_SAFE_PROXIES
					if (!valid()) {
						type t = type_of(L, target);
						type_panic_c_str(L, target, t, type::none, "bad get from protected_function_result (is not an error)");
					}
#endif // Check Argument Safety
					return stack::get<T>(L, target);
				}
			}
		}

		type get_type(int index_offset = 0) const noexcept {
			return type_of(L, index + static_cast<int>(index_offset));