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: gen.go
    path of file: ./repos/DocHub/vendor/golang.org/x/net/html/atom
    
    the code of the file until where you have to start completion: // Copyright 2012 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.

// +build ignore

package main

// This program generates table.go and table_test.go.
// Invoke as
//
//	go run gen.go |gofmt >table.go
//	go run gen.go -test |gofmt >table_test.go

import (
	"flag"
	"fmt"
	"math/rand"
	"os"
	"sort"
	"strings"
)

// identifier converts s to a Go exported identifier.
// It converts "div" to "Div" and "accept-charset" to "AcceptCharset".
func identifier(s string) string {
	b := make([]byte, 0, len(s))
	cap := true
	for _, c := range s {
		if c == '-' {
			cap = true
			continue
		}
		if cap && 'a' <= c && c <= 'z' {
			c -= 'a' - 'A'
		}
		cap = false
		b = append(b, byte(c))
	}
	return string(b)
}

var test = flag.Bool("test", false, "generate table_test.go")

func main() {
	flag.Parse()

	var all []string
	all = append(all, elements...)
	all = append(all, attributes...)
	all = append(all, eventHandlers...)
	all = append(all, extra...)
	sort.Strings(all)

	if *test {
		fmt.Printf("// generated by go run gen.go -test; DO NOT EDIT\n\n")
		fmt.Printf("package atom\n\n")
		fmt.Printf("var testAtomList = []string{\n")
		for _, s := range all {
			fmt.Printf("\t%q,\n", s)
		}
		fmt.Printf("}\n")
		return
	}

	// uniq - lists have dups
	// compute max len too
	maxLen := 0
	w := 0
	for _, s := range all {
		if w == 0 || all[w-1] != s {
			if maxLen < len(s) {
				maxLen = len(s)
			}
			all[w] = s
			w++
		}
	}
	all = all[:w]

	// Find hash that minimizes table size.
	var best *table
	for i := 0; i < 1000000; i++ {
		if best != nil && 1<<(best.k-1) < len(all) {
			break
		}
		h := rand.Uint32()
		for k := uint(0); k <= 16; k++ {
			if best != nil && k >= best.k {
				break
			}
			var t table
			if t.init(h, k, all) {
				best = &t
				break
			}
		}
	}
	if best == nil {
		fmt.Fprintf(os.Stderr, "failed to construct string table\n")
		os.Exit(1)
	}

	// Lay out stri
    
func main() {
	flag.Parse()

	var all []string
	all = append(all, elements...)
	all = append(all, attributes...)
	all = append(all, eventHandlers...)
	all = append(all, extra...)
	sort.Strings(all)

	if *test {
		fmt.Printf("// generated by go run gen.go -test; DO NOT EDIT\n\n")
		fmt.Printf("package atom\n\n")
		fmt.Printf("var testAtomList = []string{\n")
		for _, s := range all {
			fmt.Printf("\t%q,\n", s)
		}
		fmt.Printf("}\n")
		return
	}

	// uniq - lists have dups
	// compute max len too
	maxLen := 0
	w := 0
	for _, s := range all {
		if w == 0 || all[w-1] != s {
			if maxLen < len(s) {
				maxLen = len(s)
			}
			all[w] = s
			w++
		}
	}
	all = all[:w]

	// Find hash that minimizes table size.
	var best *table
	for i := 0; i < 1000000; i++ {
		if best != nil && 1<<(best.k-1) < len(all) {
			break
		}
		h := rand.Uint32()
		for k := uint(0); k <= 16; k++ {
			if best != nil && k >= best.k {
				break
			}
			var t table
			if t.init(h, k, all) {
				best = &t
				break
			}
		}
	}
	if best == nil {
		fmt.Fprintf(os.Stderr, "failed to construct string table\n")
		os.Exit(1)
	}

	// Lay out strings, using overlaps when possible.
	layout := append([]string{}, all...)

	// Remove strings that are substrings of other strings
	for changed := true; changed; {
		changed = false
		for i, s := range layout {
			if s == "" {
				continue
			}
			for j, t := range layout {
				if i != j && t != "" && strings.Contains(s, t) {
					changed = true
					layout[j] = ""
				}
			}
		}
	}

	// Join strings where one suffix matches another prefix.
	for {
		// Find best i, j, k such that layout[i][len-k:] == layout[j][:k],
		// maximizing overlap length k.
		besti := -1
		bestj := -1
		bestk := 0
		for i, s := range layout {
			if s == "" {
				continue
			}
			for j, t := range layout {
				if i == j {
					continue
				}
				for k := bestk + 1; k <= len(s) && k <= len(t); k++ {
					if s[len(s)-k:] == t[:k] {
						besti = i
						bestj = j
						bestk = k
					}
				}
			}
		}
		if bestk > 0 {
			layout[besti] += layout[bestj][bestk:]
			layout[bestj] = ""
			continue
		}
		break
	}

	text := strings.Join(layout, "")

	atom := map[string]uint32{}
	for _, s := range all {
		off := strings.Index(text, s)
		if off < 0 {
			panic("lost string " + s)
		}
		atom[s] = uint32(off<<8 | len(s))
	}

	// Generate the Go code.
	fmt.Printf("// generated by go run gen.go; DO NOT EDIT\n\n")
	fmt.Printf("package atom\n\nconst (\n")
	for _, s := range all {
		fmt.Printf("\t%s Atom = %#x\n", identifier(s), atom[s])
	}
	fmt.Printf(")\n\n")

	fmt.Printf("const hash0 = %#x\n\n", best.h0)
	fmt.Printf("const maxAtomLen = %d\n\n", maxLen)

	fmt.Printf("var table = [1<<%d]Atom{\n", best.k)
	for i, s := range best.tab {
		if s == "" {
			continue
		}
		fmt.Printf("\t%#x: %#x, // %s\n", i, atom[s], s)
	}
	fmt.Printf("}\n")
	datasize := (1 << best.k) * 4

	fmt.Printf("const atomText =\n")
	textsize := len(text)
	for len(text) > 60 {
		fmt.Printf("\t%q +\n", text[:60])
		text = text[60:]
	}
	fmt.Printf("\t%q\n\n", text)

	fmt.Fprintf(os.Stderr, "%d atoms; %d string bytes + %d tables = %d total data\n", len(all), textsize, datasize, textsize+datasize)
}