You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: tup.go
    path of file: ./repos/TarsGo/tars/protocol/tup
    
    the code of the file until where you have to start completion: package tup

import (
	"fmt"
	"reflect"

	"github.com/TarsCloud/TarsGo/tars/protocol/codec"
)

type TarsStructIF interface {
	WriteBlock(os *codec.Buffer, tag byte) error
	ReadBlock(is *codec.Reader, tag byte, require bool) error
}

type UniAttribute struct {
	data map[string][]byte
	//os 		codec.Buffer
	//is 		codec.Reader
}

func NewUniAttribute() *UniAttribute {
	return &UniAttribute{data: make(map[string][]byte)}
}

func (u *UniAttribute) PutBuffer(k string, buf [
    
func (u *UniAttribute) putBase(data interface{}, os *codec.Buffer) error {
	var err error
	//os := codec.NewBuffer()
	switch d := data.(type) {
	case int64:
		err = os.WriteInt64(d, 0)
	case int32:
		err = os.WriteInt32(d, 0)
	case int16:
		err = os.WriteInt16(d, 0)
	case int8:
		err = os.WriteInt8(d, 0)
	case uint32:
		err = os.WriteUint32(d, 0)
	case uint16:
		err = os.WriteUint16(d, 0)
	case uint8:
		err = os.WriteUint8(d, 0)
	case bool:
		err = os.WriteBool(d, 0)
	case float64:
		err = os.WriteFloat64(d, 0)
	case float32:
		err = os.WriteFloat32(d, 0)
	case string:
		err = os.WriteString(d, 0)
	case TarsStructIF:
		err = data.(TarsStructIF).WriteBlock(os, 0)
	default:
		err = fmt.Errorf("tup put error: not support type")
	}

	return err
}