Function script_throw_on_error

Libs/sol/sol.hpp:24992–25048

	}

	inline protected_function_result script_throw_on_error(lua_State* L, protected_function_result result) {
		type t = type_of(L, result.stack_index());
		std::string err = "sol: ";
		err += to_string(result.status());
		err += " error";
#if SOL_IS_ON(SOL_EXCEPTIONS_I_)
		std::exception_ptr eptr = std::current_exception();
		if (eptr) {
			err += " with a ";
			try {
				std::rethrow_exception(eptr);
			}
			catch (const std::exception& ex) {
				err += "std::exception -- ";
				err.append(ex.what());
			}
			catch (const std::string& message) {
				err += "thrown message -- ";
				err.append(message);
			}
			catch (const char* message) {
				err += "thrown message -- ";
				err.append(message);
			}
			catch (...) {
				err.append("thrown but unknown type, cannot serialize into error message");
			}
		}
#endif // serialize exception information if possible
		if (t == type::string) {
			err += ": ";
			string_view serr = stack::unqualified_get<string_view>(L, result.stack_index());
			err.append(serr.data(), serr.size());
		}
#if SOL_IS_ON(SOL_PRINT_ERRORS_I_)
		std::cerr << "[sol3] An error occurred and has been passed to an error handler: ";
		std::cerr << err;
		std::cerr << std::endl;
#endif
		// replacing information of stack error into pfr
		int target = result.stack_index();
		if (result.pop_count() > 0) {
			stack::remove(L, target, result.pop_count());
		}
		stack::push(L, err);
		int top = lua_gettop(L);
		int towards = top - target;
		if (towards != 0) {
			lua_rotate(L, top, towards);
		}
#if SOL_IS_OFF(SOL_EXCEPTIONS_I_)
		return result;
#else
		// just throw our error
		throw error(detail::direct_error, err);
#endif // If exceptions are allowed
	}