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: decode.go
    path of file: ./repos/gccrs/libgo/go/encoding/json
    
    the code of the file until where you have to start completion: // Copyright 2010 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.

// Represents JSON data structure using native Go types: booleans, floats,
// strings, arrays, and maps.

package json

import (
	"encoding"
	"encoding/base64"
	"fmt"
	"reflect"
	"strconv"
	"strings"
	"unicode"
	"unicode/utf16"
	"unicode/utf8"
)

// Unmarshal parses the JSON-encoded data and stores the result
// in the value pointed to by v. If v is nil or not a pointer,
// Unmarshal 
    
func (d *decodeState) rescanLiteral() {
	data, i := d.data, d.off
Switch:
	switch data[i-1] {
	case '"': // string
		for ; i < len(data); i++ {
			switch data[i] {
			case '\\':
				i++ // escaped char
			case '"':
				i++ // tokenize the closing quote too
				break Switch
			}
		}
	case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '-': // number
		for ; i < len(data); i++ {
			switch data[i] {
			case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
				'.', 'e', 'E', '+', '-':
			default:
				break Switch
			}
		}
	case 't': // true
		i += len("rue")
	case 'f': // false
		i += len("alse")
	case 'n': // null
		i += len("ull")
	}
	if i < len(data) {
		d.opcode = stateEndValue(&d.scan, data[i])
	} else {
		d.opcode = scanEnd
	}
	d.off = i + 1
}