Bike.Interpreter.Interpreter.Stringify C# (CSharp) Метод

        public string Stringify(object obj, bool printError = false)
        {
            if (obj == null)
                throw ErrorFactory.CreateTypeError( "Invalid operand type: 'null'");
            if (obj is BikeObject)
            {
                var sb = new StringBuilder();
                var bo = (BikeObject) obj;
                if (bo.Exist("to_string") || bo.Exist (InterpreterHelper.MemberMissing))
                {
                    var ts = bo.Resolve("to_string");
                    if (ts is BikeFunction)
                    {
                        var value = CallBikeFunction((BikeFunction) ts, bo, new object[0]);
                        sb.Append(((BikeString) value).Value);
                    }
                    else
                    {
                        throw ErrorFactory.CreateTypeError("to_string is not a function");
                    }
                }
                else
                {
                    throw ErrorFactory.CreateNotDefinedError("to_string");
                }
                if (printError && !bo.Exist(InterpreterHelper.SpecialSuffix + "is_error") && bo.Exist("stack_trace"))
                {
                    var st = ((BikeString)bo.Resolve("stack_trace")).Value;
                    sb.AppendLine().Append("Stack Trace:").AppendLine().Append(st).AppendLine();
                }
                return sb.ToString();
            }
            return obj.ToString();
        }