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: shiftjis.go
    path of file: ./repos/kubeedge/vendor/golang.org/x/text/encoding/japanese
    
    the code of the file until where you have to start completion: // Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package japanese

import (
	"unicode/utf8"

	"golang.org/x/text/encoding"
	"golang.org/x/text/encoding/internal"
	"golang.org/x/text/encoding/internal/identifier"
	"golang.org/x/text/transform"
)

// ShiftJIS is the Shift JIS encoding, also known as Code Page 932 and
// Windows-31J.
var ShiftJIS encoding.Encoding = &shiftJIS

var shiftJIS = internal.Encoding{
	&internal.SimpleEncoding{shiftJISDecoder{}, shiftJISEncoder{}},
	"Shift JIS",
	identifier.ShiftJIS,
}

type shiftJISDecoder struct{ transform.NopResetter }

func (shiftJISDecoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
	r, size := rune(0), 0
loop:
	for ; nSrc < len(src); nSrc += size {
		switch c0 := src[nSrc]; {
		case c0 < utf8.RuneSelf:
			r, size = rune(c0), 1

		case 0xa1 <= c0 && c0 < 0xe0:
			r, size = rune(c0)+(0xff61-0xa1), 1

		case (0x81 <= c0 && c0 < 0xa0) || (0xe0 <= c0 && c0 < 0xfd):
			if c0 <
    
func (shiftJISEncoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
	r, size := rune(0), 0
loop:
	for ; nSrc < len(src); nSrc += size {
		r = rune(src[nSrc])

		// Decode a 1-byte rune.
		if r < utf8.RuneSelf {
			size = 1

		} else {
			// Decode a multi-byte rune.
			r, size = utf8.DecodeRune(src[nSrc:])
			if size == 1 {
				// All valid runes of size 1 (those below utf8.RuneSelf) were
				// handled above. We have invalid UTF-8 or we haven't seen the
				// full character yet.
				if !atEOF && !utf8.FullRune(src[nSrc:]) {
					err = transform.ErrShortSrc
					break loop
				}
			}

			// func init checks that the switch covers all tables.
			switch {
			case encode0Low <= r && r < encode0High:
				if r = rune(encode0[r-encode0Low]); r>>tableShift == jis0208 {
					goto write2
				}
			case encode1Low <= r && r < encode1High:
				if r = rune(encode1[r-encode1Low]); r>>tableShift == jis0208 {
					goto write2
				}
			case encode2Low <= r && r < encode2High:
				if r = rune(encode2[r-encode2Low]); r>>tableShift == jis0208 {
					goto write2
				}
			case encode3Low <= r && r < encode3High:
				if r = rune(encode3[r-encode3Low]); r>>tableShift == jis0208 {
					goto write2
				}
			case encode4Low <= r && r < encode4High:
				if r = rune(encode4[r-encode4Low]); r>>tableShift == jis0208 {
					goto write2
				}
			case encode5Low <= r && r < encode5High:
				if 0xff61 <= r && r < 0xffa0 {
					r -= 0xff61 - 0xa1
					goto write1
				}
				if r = rune(encode5[r-encode5Low]); r>>tableShift == jis0208 {
					goto write2
				}
			}
			err = internal.ErrASCIIReplacement
			break
		}

	write1:
		if nDst >= len(dst) {
			err = transform.ErrShortDst
			break
		}
		dst[nDst] = uint8(r)
		nDst++
		continue

	write2:
		j1 := uint8(r>>codeShift) & codeMask
		j2 := uint8(r) & codeMask
		if nDst+2 > len(dst) {
			err = transform.ErrShortDst
			break loop
		}
		if j1 <= 61 {
			dst[nDst+0] = 129 + j1/2
		} else {
			dst[nDst+0] = 193 + j1/2
		}
		if j1&1 == 0 {
			dst[nDst+1] = j2 + j2/63 + 64
		} else {
			dst[nDst+1] = j2 + 159
		}
		nDst += 2
		continue
	}
	return nDst, nSrc, err
}