// Encodes a lua value, only bool, number, nil, table, and string can be // encoded. If an unencodable value is encountered an error will be // returned. func LuaEncodeValue(w io.Writer, L *lua.State, index int) error { var err1, err2, err3 error switch { case L.IsBoolean(index): err1 = binary.Write(w, binary.LittleEndian, luaEncBool) var v byte = 0 if L.ToBoolean(index) { v = 1 } err2 = binary.Write(w, binary.LittleEndian, v) case L.IsNumber(index): err1 = binary.Write(w, binary.LittleEndian, luaEncNumber) err2 = binary.Write(w, binary.LittleEndian, L.ToNumber(index)) case L.IsNil(index): err1 = binary.Write(w, binary.LittleEndian, luaEncNil) case LuaIsEntity(L, index): err1 = binary.Write(w, binary.LittleEndian, luaEncEntity) L.PushString("id") L.GetTable(index - 1) err2 = binary.Write(w, binary.LittleEndian, uint64(L.ToInteger(-1))) L.Pop(1) case L.IsTable(index): err1 = binary.Write(w, binary.LittleEndian, luaEncTable) err2 = LuaEncodeTable(w, L, index) case L.IsString(index): err1 = binary.Write(w, binary.LittleEndian, luaEncString) str := L.ToString(index) err2 = binary.Write(w, binary.LittleEndian, uint32(len(str))) err3 = binary.Write(w, binary.LittleEndian, []byte(str)) default: return errors.New(fmt.Sprintf("Cannot encode lua type id == %d.", L.Type(index))) } switch { case err1 != nil: return err1 case err2 != nil: return err2 case err3 != nil: return err3 } return nil }
func LuaStringifyParam(L *lua.State, index int) string { if L.IsTable(index) { str := "table <not implemented> {" return str first := true L.PushNil() for L.Next(index-1) != 0 { if !first { str += ", " } first = false str += fmt.Sprintf("(%s) -> (%s)", LuaStringifyParam(L, -2), LuaStringifyParam(L, -1)) L.Pop(1) } return str + "}" } if L.IsBoolean(index) { if L.ToBoolean(index) { return "true" } return "false" } return L.ToString(index) }