--- a/vendor/golang.org/x/text/unicode/norm/maketables.go Wed Sep 18 19:17:42 2019 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,976 +0,0 @@
-// Copyright 2011 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
-
-// Normalization table generator.
-// Data read from the web.
-// See forminfo.go for a description of the trie values associated with each rune.
-
-package main
-
-import (
- "bytes"
- "flag"
- "fmt"
- "io"
- "log"
- "sort"
- "strconv"
- "strings"
-
- "golang.org/x/text/internal/gen"
- "golang.org/x/text/internal/triegen"
- "golang.org/x/text/internal/ucd"
-)
-
-func main() {
- gen.Init()
- loadUnicodeData()
- compactCCC()
- loadCompositionExclusions()
- completeCharFields(FCanonical)
- completeCharFields(FCompatibility)
- computeNonStarterCounts()
- verifyComputed()
- printChars()
- testDerived()
- printTestdata()
- makeTables()
-}
-
-var (
- tablelist = flag.String("tables",
- "all",
- "comma-separated list of which tables to generate; "+
- "can be 'decomp', 'recomp', 'info' and 'all'")
- test = flag.Bool("test",
- false,
- "test existing tables against DerivedNormalizationProps and generate test data for regression testing")
- verbose = flag.Bool("verbose",
- false,
- "write data to stdout as it is parsed")
-)
-
-const MaxChar = 0x10FFFF // anything above this shouldn't exist
-
-// Quick Check properties of runes allow us to quickly
-// determine whether a rune may occur in a normal form.
-// For a given normal form, a rune may be guaranteed to occur
-// verbatim (QC=Yes), may or may not combine with another
-// rune (QC=Maybe), or may not occur (QC=No).
-type QCResult int
-
-const (
- QCUnknown QCResult = iota
- QCYes
- QCNo
- QCMaybe
-)
-
-func (r QCResult) String() string {
- switch r {
- case QCYes:
- return "Yes"
- case QCNo:
- return "No"
- case QCMaybe:
- return "Maybe"
- }
- return "***UNKNOWN***"
-}
-
-const (
- FCanonical = iota // NFC or NFD
- FCompatibility // NFKC or NFKD
- FNumberOfFormTypes
-)
-
-const (
- MComposed = iota // NFC or NFKC
- MDecomposed // NFD or NFKD
- MNumberOfModes
-)
-
-// This contains only the properties we're interested in.
-type Char struct {
- name string
- codePoint rune // if zero, this index is not a valid code point.
- ccc uint8 // canonical combining class
- origCCC uint8
- excludeInComp bool // from CompositionExclusions.txt
- compatDecomp bool // it has a compatibility expansion
-
- nTrailingNonStarters uint8
- nLeadingNonStarters uint8 // must be equal to trailing if non-zero
-
- forms [FNumberOfFormTypes]FormInfo // For FCanonical and FCompatibility
-
- state State
-}
-
-var chars = make([]Char, MaxChar+1)
-var cccMap = make(map[uint8]uint8)
-
-func (c Char) String() string {
- buf := new(bytes.Buffer)
-
- fmt.Fprintf(buf, "%U [%s]:\n", c.codePoint, c.name)
- fmt.Fprintf(buf, " ccc: %v\n", c.ccc)
- fmt.Fprintf(buf, " excludeInComp: %v\n", c.excludeInComp)
- fmt.Fprintf(buf, " compatDecomp: %v\n", c.compatDecomp)
- fmt.Fprintf(buf, " state: %v\n", c.state)
- fmt.Fprintf(buf, " NFC:\n")
- fmt.Fprint(buf, c.forms[FCanonical])
- fmt.Fprintf(buf, " NFKC:\n")
- fmt.Fprint(buf, c.forms[FCompatibility])
-
- return buf.String()
-}
-
-// In UnicodeData.txt, some ranges are marked like this:
-// 3400;<CJK Ideograph Extension A, First>;Lo;0;L;;;;;N;;;;;
-// 4DB5;<CJK Ideograph Extension A, Last>;Lo;0;L;;;;;N;;;;;
-// parseCharacter keeps a state variable indicating the weirdness.
-type State int
-
-const (
- SNormal State = iota // known to be zero for the type
- SFirst
- SLast
- SMissing
-)
-
-var lastChar = rune('\u0000')
-
-func (c Char) isValid() bool {
- return c.codePoint != 0 && c.state != SMissing
-}
-
-type FormInfo struct {
- quickCheck [MNumberOfModes]QCResult // index: MComposed or MDecomposed
- verified [MNumberOfModes]bool // index: MComposed or MDecomposed
-
- combinesForward bool // May combine with rune on the right
- combinesBackward bool // May combine with rune on the left
- isOneWay bool // Never appears in result
- inDecomp bool // Some decompositions result in this char.
- decomp Decomposition
- expandedDecomp Decomposition
-}
-
-func (f FormInfo) String() string {
- buf := bytes.NewBuffer(make([]byte, 0))
-
- fmt.Fprintf(buf, " quickCheck[C]: %v\n", f.quickCheck[MComposed])
- fmt.Fprintf(buf, " quickCheck[D]: %v\n", f.quickCheck[MDecomposed])
- fmt.Fprintf(buf, " cmbForward: %v\n", f.combinesForward)
- fmt.Fprintf(buf, " cmbBackward: %v\n", f.combinesBackward)
- fmt.Fprintf(buf, " isOneWay: %v\n", f.isOneWay)
- fmt.Fprintf(buf, " inDecomp: %v\n", f.inDecomp)
- fmt.Fprintf(buf, " decomposition: %X\n", f.decomp)
- fmt.Fprintf(buf, " expandedDecomp: %X\n", f.expandedDecomp)
-
- return buf.String()
-}
-
-type Decomposition []rune
-
-func parseDecomposition(s string, skipfirst bool) (a []rune, err error) {
- decomp := strings.Split(s, " ")
- if len(decomp) > 0 && skipfirst {
- decomp = decomp[1:]
- }
- for _, d := range decomp {
- point, err := strconv.ParseUint(d, 16, 64)
- if err != nil {
- return a, err
- }
- a = append(a, rune(point))
- }
- return a, nil
-}
-
-func loadUnicodeData() {
- f := gen.OpenUCDFile("UnicodeData.txt")
- defer f.Close()
- p := ucd.New(f)
- for p.Next() {
- r := p.Rune(ucd.CodePoint)
- char := &chars[r]
-
- char.ccc = uint8(p.Uint(ucd.CanonicalCombiningClass))
- decmap := p.String(ucd.DecompMapping)
-
- exp, err := parseDecomposition(decmap, false)
- isCompat := false
- if err != nil {
- if len(decmap) > 0 {
- exp, err = parseDecomposition(decmap, true)
- if err != nil {
- log.Fatalf(`%U: bad decomp |%v|: "%s"`, r, decmap, err)
- }
- isCompat = true
- }
- }
-
- char.name = p.String(ucd.Name)
- char.codePoint = r
- char.forms[FCompatibility].decomp = exp
- if !isCompat {
- char.forms[FCanonical].decomp = exp
- } else {
- char.compatDecomp = true
- }
- if len(decmap) > 0 {
- char.forms[FCompatibility].decomp = exp
- }
- }
- if err := p.Err(); err != nil {
- log.Fatal(err)
- }
-}
-
-// compactCCC converts the sparse set of CCC values to a continguous one,
-// reducing the number of bits needed from 8 to 6.
-func compactCCC() {
- m := make(map[uint8]uint8)
- for i := range chars {
- c := &chars[i]
- m[c.ccc] = 0
- }
- cccs := []int{}
- for v, _ := range m {
- cccs = append(cccs, int(v))
- }
- sort.Ints(cccs)
- for i, c := range cccs {
- cccMap[uint8(i)] = uint8(c)
- m[uint8(c)] = uint8(i)
- }
- for i := range chars {
- c := &chars[i]
- c.origCCC = c.ccc
- c.ccc = m[c.ccc]
- }
- if len(m) >= 1<<6 {
- log.Fatalf("too many difference CCC values: %d >= 64", len(m))
- }
-}
-
-// CompositionExclusions.txt has form:
-// 0958 # ...
-// See http://unicode.org/reports/tr44/ for full explanation
-func loadCompositionExclusions() {
- f := gen.OpenUCDFile("CompositionExclusions.txt")
- defer f.Close()
- p := ucd.New(f)
- for p.Next() {
- c := &chars[p.Rune(0)]
- if c.excludeInComp {
- log.Fatalf("%U: Duplicate entry in exclusions.", c.codePoint)
- }
- c.excludeInComp = true
- }
- if e := p.Err(); e != nil {
- log.Fatal(e)
- }
-}
-
-// hasCompatDecomp returns true if any of the recursive
-// decompositions contains a compatibility expansion.
-// In this case, the character may not occur in NFK*.
-func hasCompatDecomp(r rune) bool {
- c := &chars[r]
- if c.compatDecomp {
- return true
- }
- for _, d := range c.forms[FCompatibility].decomp {
- if hasCompatDecomp(d) {
- return true
- }
- }
- return false
-}
-
-// Hangul related constants.
-const (
- HangulBase = 0xAC00
- HangulEnd = 0xD7A4 // hangulBase + Jamo combinations (19 * 21 * 28)
-
- JamoLBase = 0x1100
- JamoLEnd = 0x1113
- JamoVBase = 0x1161
- JamoVEnd = 0x1176
- JamoTBase = 0x11A8
- JamoTEnd = 0x11C3
-
- JamoLVTCount = 19 * 21 * 28
- JamoTCount = 28
-)
-
-func isHangul(r rune) bool {
- return HangulBase <= r && r < HangulEnd
-}
-
-func isHangulWithoutJamoT(r rune) bool {
- if !isHangul(r) {
- return false
- }
- r -= HangulBase
- return r < JamoLVTCount && r%JamoTCount == 0
-}
-
-func ccc(r rune) uint8 {
- return chars[r].ccc
-}
-
-// Insert a rune in a buffer, ordered by Canonical Combining Class.
-func insertOrdered(b Decomposition, r rune) Decomposition {
- n := len(b)
- b = append(b, 0)
- cc := ccc(r)
- if cc > 0 {
- // Use bubble sort.
- for ; n > 0; n-- {
- if ccc(b[n-1]) <= cc {
- break
- }
- b[n] = b[n-1]
- }
- }
- b[n] = r
- return b
-}
-
-// Recursively decompose.
-func decomposeRecursive(form int, r rune, d Decomposition) Decomposition {
- dcomp := chars[r].forms[form].decomp
- if len(dcomp) == 0 {
- return insertOrdered(d, r)
- }
- for _, c := range dcomp {
- d = decomposeRecursive(form, c, d)
- }
- return d
-}
-
-func completeCharFields(form int) {
- // Phase 0: pre-expand decomposition.
- for i := range chars {
- f := &chars[i].forms[form]
- if len(f.decomp) == 0 {
- continue
- }
- exp := make(Decomposition, 0)
- for _, c := range f.decomp {
- exp = decomposeRecursive(form, c, exp)
- }
- f.expandedDecomp = exp
- }
-
- // Phase 1: composition exclusion, mark decomposition.
- for i := range chars {
- c := &chars[i]
- f := &c.forms[form]
-
- // Marks script-specific exclusions and version restricted.
- f.isOneWay = c.excludeInComp
-
- // Singletons
- f.isOneWay = f.isOneWay || len(f.decomp) == 1
-
- // Non-starter decompositions
- if len(f.decomp) > 1 {
- chk := c.ccc != 0 || chars[f.decomp[0]].ccc != 0
- f.isOneWay = f.isOneWay || chk
- }
-
- // Runes that decompose into more than two runes.
- f.isOneWay = f.isOneWay || len(f.decomp) > 2
-
- if form == FCompatibility {
- f.isOneWay = f.isOneWay || hasCompatDecomp(c.codePoint)
- }
-
- for _, r := range f.decomp {
- chars[r].forms[form].inDecomp = true
- }
- }
-
- // Phase 2: forward and backward combining.
- for i := range chars {
- c := &chars[i]
- f := &c.forms[form]
-
- if !f.isOneWay && len(f.decomp) == 2 {
- f0 := &chars[f.decomp[0]].forms[form]
- f1 := &chars[f.decomp[1]].forms[form]
- if !f0.isOneWay {
- f0.combinesForward = true
- }
- if !f1.isOneWay {
- f1.combinesBackward = true
- }
- }
- if isHangulWithoutJamoT(rune(i)) {
- f.combinesForward = true
- }
- }
-
- // Phase 3: quick check values.
- for i := range chars {
- c := &chars[i]
- f := &c.forms[form]
-
- switch {
- case len(f.decomp) > 0:
- f.quickCheck[MDecomposed] = QCNo
- case isHangul(rune(i)):
- f.quickCheck[MDecomposed] = QCNo
- default:
- f.quickCheck[MDecomposed] = QCYes
- }
- switch {
- case f.isOneWay:
- f.quickCheck[MComposed] = QCNo
- case (i & 0xffff00) == JamoLBase:
- f.quickCheck[MComposed] = QCYes
- if JamoLBase <= i && i < JamoLEnd {
- f.combinesForward = true
- }
- if JamoVBase <= i && i < JamoVEnd {
- f.quickCheck[MComposed] = QCMaybe
- f.combinesBackward = true
- f.combinesForward = true
- }
- if JamoTBase <= i && i < JamoTEnd {
- f.quickCheck[MComposed] = QCMaybe
- f.combinesBackward = true
- }
- case !f.combinesBackward:
- f.quickCheck[MComposed] = QCYes
- default:
- f.quickCheck[MComposed] = QCMaybe
- }
- }
-}
-
-func computeNonStarterCounts() {
- // Phase 4: leading and trailing non-starter count
- for i := range chars {
- c := &chars[i]
-
- runes := []rune{rune(i)}
- // We always use FCompatibility so that the CGJ insertion points do not
- // change for repeated normalizations with different forms.
- if exp := c.forms[FCompatibility].expandedDecomp; len(exp) > 0 {
- runes = exp
- }
- // We consider runes that combine backwards to be non-starters for the
- // purpose of Stream-Safe Text Processing.
- for _, r := range runes {
- if cr := &chars[r]; cr.ccc == 0 && !cr.forms[FCompatibility].combinesBackward {
- break
- }
- c.nLeadingNonStarters++
- }
- for i := len(runes) - 1; i >= 0; i-- {
- if cr := &chars[runes[i]]; cr.ccc == 0 && !cr.forms[FCompatibility].combinesBackward {
- break
- }
- c.nTrailingNonStarters++
- }
- if c.nTrailingNonStarters > 3 {
- log.Fatalf("%U: Decomposition with more than 3 (%d) trailing modifiers (%U)", i, c.nTrailingNonStarters, runes)
- }
-
- if isHangul(rune(i)) {
- c.nTrailingNonStarters = 2
- if isHangulWithoutJamoT(rune(i)) {
- c.nTrailingNonStarters = 1
- }
- }
-
- if l, t := c.nLeadingNonStarters, c.nTrailingNonStarters; l > 0 && l != t {
- log.Fatalf("%U: number of leading and trailing non-starters should be equal (%d vs %d)", i, l, t)
- }
- if t := c.nTrailingNonStarters; t > 3 {
- log.Fatalf("%U: number of trailing non-starters is %d > 3", t)
- }
- }
-}
-
-func printBytes(w io.Writer, b []byte, name string) {
- fmt.Fprintf(w, "// %s: %d bytes\n", name, len(b))
- fmt.Fprintf(w, "var %s = [...]byte {", name)
- for i, c := range b {
- switch {
- case i%64 == 0:
- fmt.Fprintf(w, "\n// Bytes %x - %x\n", i, i+63)
- case i%8 == 0:
- fmt.Fprintf(w, "\n")
- }
- fmt.Fprintf(w, "0x%.2X, ", c)
- }
- fmt.Fprint(w, "\n}\n\n")
-}
-
-// See forminfo.go for format.
-func makeEntry(f *FormInfo, c *Char) uint16 {
- e := uint16(0)
- if r := c.codePoint; HangulBase <= r && r < HangulEnd {
- e |= 0x40
- }
- if f.combinesForward {
- e |= 0x20
- }
- if f.quickCheck[MDecomposed] == QCNo {
- e |= 0x4
- }
- switch f.quickCheck[MComposed] {
- case QCYes:
- case QCNo:
- e |= 0x10
- case QCMaybe:
- e |= 0x18
- default:
- log.Fatalf("Illegal quickcheck value %v.", f.quickCheck[MComposed])
- }
- e |= uint16(c.nTrailingNonStarters)
- return e
-}
-
-// decompSet keeps track of unique decompositions, grouped by whether
-// the decomposition is followed by a trailing and/or leading CCC.
-type decompSet [7]map[string]bool
-
-const (
- normalDecomp = iota
- firstMulti
- firstCCC
- endMulti
- firstLeadingCCC
- firstCCCZeroExcept
- firstStarterWithNLead
- lastDecomp
-)
-
-var cname = []string{"firstMulti", "firstCCC", "endMulti", "firstLeadingCCC", "firstCCCZeroExcept", "firstStarterWithNLead", "lastDecomp"}
-
-func makeDecompSet() decompSet {
- m := decompSet{}
- for i := range m {
- m[i] = make(map[string]bool)
- }
- return m
-}
-func (m *decompSet) insert(key int, s string) {
- m[key][s] = true
-}
-
-func printCharInfoTables(w io.Writer) int {
- mkstr := func(r rune, f *FormInfo) (int, string) {
- d := f.expandedDecomp
- s := string([]rune(d))
- if max := 1 << 6; len(s) >= max {
- const msg = "%U: too many bytes in decomposition: %d >= %d"
- log.Fatalf(msg, r, len(s), max)
- }
- head := uint8(len(s))
- if f.quickCheck[MComposed] != QCYes {
- head |= 0x40
- }
- if f.combinesForward {
- head |= 0x80
- }
- s = string([]byte{head}) + s
-
- lccc := ccc(d[0])
- tccc := ccc(d[len(d)-1])
- cc := ccc(r)
- if cc != 0 && lccc == 0 && tccc == 0 {
- log.Fatalf("%U: trailing and leading ccc are 0 for non-zero ccc %d", r, cc)
- }
- if tccc < lccc && lccc != 0 {
- const msg = "%U: lccc (%d) must be <= tcc (%d)"
- log.Fatalf(msg, r, lccc, tccc)
- }
- index := normalDecomp
- nTrail := chars[r].nTrailingNonStarters
- nLead := chars[r].nLeadingNonStarters
- if tccc > 0 || lccc > 0 || nTrail > 0 {
- tccc <<= 2
- tccc |= nTrail
- s += string([]byte{tccc})
- index = endMulti
- for _, r := range d[1:] {
- if ccc(r) == 0 {
- index = firstCCC
- }
- }
- if lccc > 0 || nLead > 0 {
- s += string([]byte{lccc})
- if index == firstCCC {
- log.Fatalf("%U: multi-segment decomposition not supported for decompositions with leading CCC != 0", r)
- }
- index = firstLeadingCCC
- }
- if cc != lccc {
- if cc != 0 {
- log.Fatalf("%U: for lccc != ccc, expected ccc to be 0; was %d", r, cc)
- }
- index = firstCCCZeroExcept
- }
- } else if len(d) > 1 {
- index = firstMulti
- }
- return index, s
- }
-
- decompSet := makeDecompSet()
- const nLeadStr = "\x00\x01" // 0-byte length and tccc with nTrail.
- decompSet.insert(firstStarterWithNLead, nLeadStr)
-
- // Store the uniqued decompositions in a byte buffer,
- // preceded by their byte length.
- for _, c := range chars {
- for _, f := range c.forms {
- if len(f.expandedDecomp) == 0 {
- continue
- }
- if f.combinesBackward {
- log.Fatalf("%U: combinesBackward and decompose", c.codePoint)
- }
- index, s := mkstr(c.codePoint, &f)
- decompSet.insert(index, s)
- }
- }
-
- decompositions := bytes.NewBuffer(make([]byte, 0, 10000))
- size := 0
- positionMap := make(map[string]uint16)
- decompositions.WriteString("\000")
- fmt.Fprintln(w, "const (")
- for i, m := range decompSet {
- sa := []string{}
- for s := range m {
- sa = append(sa, s)
- }
- sort.Strings(sa)
- for _, s := range sa {
- p := decompositions.Len()
- decompositions.WriteString(s)
- positionMap[s] = uint16(p)
- }
- if cname[i] != "" {
- fmt.Fprintf(w, "%s = 0x%X\n", cname[i], decompositions.Len())
- }
- }
- fmt.Fprintln(w, "maxDecomp = 0x8000")
- fmt.Fprintln(w, ")")
- b := decompositions.Bytes()
- printBytes(w, b, "decomps")
- size += len(b)
-
- varnames := []string{"nfc", "nfkc"}
- for i := 0; i < FNumberOfFormTypes; i++ {
- trie := triegen.NewTrie(varnames[i])
-
- for r, c := range chars {
- f := c.forms[i]
- d := f.expandedDecomp
- if len(d) != 0 {
- _, key := mkstr(c.codePoint, &f)
- trie.Insert(rune(r), uint64(positionMap[key]))
- if c.ccc != ccc(d[0]) {
- // We assume the lead ccc of a decomposition !=0 in this case.
- if ccc(d[0]) == 0 {
- log.Fatalf("Expected leading CCC to be non-zero; ccc is %d", c.ccc)
- }
- }
- } else if c.nLeadingNonStarters > 0 && len(f.expandedDecomp) == 0 && c.ccc == 0 && !f.combinesBackward {
- // Handle cases where it can't be detected that the nLead should be equal
- // to nTrail.
- trie.Insert(c.codePoint, uint64(positionMap[nLeadStr]))
- } else if v := makeEntry(&f, &c)<<8 | uint16(c.ccc); v != 0 {
- trie.Insert(c.codePoint, uint64(0x8000|v))
- }
- }
- sz, err := trie.Gen(w, triegen.Compact(&normCompacter{name: varnames[i]}))
- if err != nil {
- log.Fatal(err)
- }
- size += sz
- }
- return size
-}
-
-func contains(sa []string, s string) bool {
- for _, a := range sa {
- if a == s {
- return true
- }
- }
- return false
-}
-
-func makeTables() {
- w := &bytes.Buffer{}
-
- size := 0
- if *tablelist == "" {
- return
- }
- list := strings.Split(*tablelist, ",")
- if *tablelist == "all" {
- list = []string{"recomp", "info"}
- }
-
- // Compute maximum decomposition size.
- max := 0
- for _, c := range chars {
- if n := len(string(c.forms[FCompatibility].expandedDecomp)); n > max {
- max = n
- }
- }
-
- fmt.Fprintln(w, "const (")
- fmt.Fprintln(w, "\t// Version is the Unicode edition from which the tables are derived.")
- fmt.Fprintf(w, "\tVersion = %q\n", gen.UnicodeVersion())
- fmt.Fprintln(w)
- fmt.Fprintln(w, "\t// MaxTransformChunkSize indicates the maximum number of bytes that Transform")
- fmt.Fprintln(w, "\t// may need to write atomically for any Form. Making a destination buffer at")
- fmt.Fprintln(w, "\t// least this size ensures that Transform can always make progress and that")
- fmt.Fprintln(w, "\t// the user does not need to grow the buffer on an ErrShortDst.")
- fmt.Fprintf(w, "\tMaxTransformChunkSize = %d+maxNonStarters*4\n", len(string(0x034F))+max)
- fmt.Fprintln(w, ")\n")
-
- // Print the CCC remap table.
- size += len(cccMap)
- fmt.Fprintf(w, "var ccc = [%d]uint8{", len(cccMap))
- for i := 0; i < len(cccMap); i++ {
- if i%8 == 0 {
- fmt.Fprintln(w)
- }
- fmt.Fprintf(w, "%3d, ", cccMap[uint8(i)])
- }
- fmt.Fprintln(w, "\n}\n")
-
- if contains(list, "info") {
- size += printCharInfoTables(w)
- }
-
- if contains(list, "recomp") {
- // Note that we use 32 bit keys, instead of 64 bit.
- // This clips the bits of three entries, but we know
- // this won't cause a collision. The compiler will catch
- // any changes made to UnicodeData.txt that introduces
- // a collision.
- // Note that the recomposition map for NFC and NFKC
- // are identical.
-
- // Recomposition map
- nrentries := 0
- for _, c := range chars {
- f := c.forms[FCanonical]
- if !f.isOneWay && len(f.decomp) > 0 {
- nrentries++
- }
- }
- sz := nrentries * 8
- size += sz
- fmt.Fprintf(w, "// recompMap: %d bytes (entries only)\n", sz)
- fmt.Fprintln(w, "var recompMap = map[uint32]rune{")
- for i, c := range chars {
- f := c.forms[FCanonical]
- d := f.decomp
- if !f.isOneWay && len(d) > 0 {
- key := uint32(uint16(d[0]))<<16 + uint32(uint16(d[1]))
- fmt.Fprintf(w, "0x%.8X: 0x%.4X,\n", key, i)
- }
- }
- fmt.Fprintf(w, "}\n\n")
- }
-
- fmt.Fprintf(w, "// Total size of tables: %dKB (%d bytes)\n", (size+512)/1024, size)
- gen.WriteVersionedGoFile("tables.go", "norm", w.Bytes())
-}
-
-func printChars() {
- if *verbose {
- for _, c := range chars {
- if !c.isValid() || c.state == SMissing {
- continue
- }
- fmt.Println(c)
- }
- }
-}
-
-// verifyComputed does various consistency tests.
-func verifyComputed() {
- for i, c := range chars {
- for _, f := range c.forms {
- isNo := (f.quickCheck[MDecomposed] == QCNo)
- if (len(f.decomp) > 0) != isNo && !isHangul(rune(i)) {
- log.Fatalf("%U: NF*D QC must be No if rune decomposes", i)
- }
-
- isMaybe := f.quickCheck[MComposed] == QCMaybe
- if f.combinesBackward != isMaybe {
- log.Fatalf("%U: NF*C QC must be Maybe if combinesBackward", i)
- }
- if len(f.decomp) > 0 && f.combinesForward && isMaybe {
- log.Fatalf("%U: NF*C QC must be Yes or No if combinesForward and decomposes", i)
- }
-
- if len(f.expandedDecomp) != 0 {
- continue
- }
- if a, b := c.nLeadingNonStarters > 0, (c.ccc > 0 || f.combinesBackward); a != b {
- // We accept these runes to be treated differently (it only affects
- // segment breaking in iteration, most likely on improper use), but
- // reconsider if more characters are added.
- // U+FF9E HALFWIDTH KATAKANA VOICED SOUND MARK;Lm;0;L;<narrow> 3099;;;;N;;;;;
- // U+FF9F HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK;Lm;0;L;<narrow> 309A;;;;N;;;;;
- // U+3133 HANGUL LETTER KIYEOK-SIOS;Lo;0;L;<compat> 11AA;;;;N;HANGUL LETTER GIYEOG SIOS;;;;
- // U+318E HANGUL LETTER ARAEAE;Lo;0;L;<compat> 11A1;;;;N;HANGUL LETTER ALAE AE;;;;
- // U+FFA3 HALFWIDTH HANGUL LETTER KIYEOK-SIOS;Lo;0;L;<narrow> 3133;;;;N;HALFWIDTH HANGUL LETTER GIYEOG SIOS;;;;
- // U+FFDC HALFWIDTH HANGUL LETTER I;Lo;0;L;<narrow> 3163;;;;N;;;;;
- if i != 0xFF9E && i != 0xFF9F && !(0x3133 <= i && i <= 0x318E) && !(0xFFA3 <= i && i <= 0xFFDC) {
- log.Fatalf("%U: nLead was %v; want %v", i, a, b)
- }
- }
- }
- nfc := c.forms[FCanonical]
- nfkc := c.forms[FCompatibility]
- if nfc.combinesBackward != nfkc.combinesBackward {
- log.Fatalf("%U: Cannot combine combinesBackward\n", c.codePoint)
- }
- }
-}
-
-// Use values in DerivedNormalizationProps.txt to compare against the
-// values we computed.
-// DerivedNormalizationProps.txt has form:
-// 00C0..00C5 ; NFD_QC; N # ...
-// 0374 ; NFD_QC; N # ...
-// See http://unicode.org/reports/tr44/ for full explanation
-func testDerived() {
- f := gen.OpenUCDFile("DerivedNormalizationProps.txt")
- defer f.Close()
- p := ucd.New(f)
- for p.Next() {
- r := p.Rune(0)
- c := &chars[r]
-
- var ftype, mode int
- qt := p.String(1)
- switch qt {
- case "NFC_QC":
- ftype, mode = FCanonical, MComposed
- case "NFD_QC":
- ftype, mode = FCanonical, MDecomposed
- case "NFKC_QC":
- ftype, mode = FCompatibility, MComposed
- case "NFKD_QC":
- ftype, mode = FCompatibility, MDecomposed
- default:
- continue
- }
- var qr QCResult
- switch p.String(2) {
- case "Y":
- qr = QCYes
- case "N":
- qr = QCNo
- case "M":
- qr = QCMaybe
- default:
- log.Fatalf(`Unexpected quick check value "%s"`, p.String(2))
- }
- if got := c.forms[ftype].quickCheck[mode]; got != qr {
- log.Printf("%U: FAILED %s (was %v need %v)\n", r, qt, got, qr)
- }
- c.forms[ftype].verified[mode] = true
- }
- if err := p.Err(); err != nil {
- log.Fatal(err)
- }
- // Any unspecified value must be QCYes. Verify this.
- for i, c := range chars {
- for j, fd := range c.forms {
- for k, qr := range fd.quickCheck {
- if !fd.verified[k] && qr != QCYes {
- m := "%U: FAIL F:%d M:%d (was %v need Yes) %s\n"
- log.Printf(m, i, j, k, qr, c.name)
- }
- }
- }
- }
-}
-
-var testHeader = `const (
- Yes = iota
- No
- Maybe
-)
-
-type formData struct {
- qc uint8
- combinesForward bool
- decomposition string
-}
-
-type runeData struct {
- r rune
- ccc uint8
- nLead uint8
- nTrail uint8
- f [2]formData // 0: canonical; 1: compatibility
-}
-
-func f(qc uint8, cf bool, dec string) [2]formData {
- return [2]formData{{qc, cf, dec}, {qc, cf, dec}}
-}
-
-func g(qc, qck uint8, cf, cfk bool, d, dk string) [2]formData {
- return [2]formData{{qc, cf, d}, {qck, cfk, dk}}
-}
-
-var testData = []runeData{
-`
-
-func printTestdata() {
- type lastInfo struct {
- ccc uint8
- nLead uint8
- nTrail uint8
- f string
- }
-
- last := lastInfo{}
- w := &bytes.Buffer{}
- fmt.Fprintf(w, testHeader)
- for r, c := range chars {
- f := c.forms[FCanonical]
- qc, cf, d := f.quickCheck[MComposed], f.combinesForward, string(f.expandedDecomp)
- f = c.forms[FCompatibility]
- qck, cfk, dk := f.quickCheck[MComposed], f.combinesForward, string(f.expandedDecomp)
- s := ""
- if d == dk && qc == qck && cf == cfk {
- s = fmt.Sprintf("f(%s, %v, %q)", qc, cf, d)
- } else {
- s = fmt.Sprintf("g(%s, %s, %v, %v, %q, %q)", qc, qck, cf, cfk, d, dk)
- }
- current := lastInfo{c.ccc, c.nLeadingNonStarters, c.nTrailingNonStarters, s}
- if last != current {
- fmt.Fprintf(w, "\t{0x%x, %d, %d, %d, %s},\n", r, c.origCCC, c.nLeadingNonStarters, c.nTrailingNonStarters, s)
- last = current
- }
- }
- fmt.Fprintln(w, "}")
- gen.WriteVersionedGoFile("data_test.go", "norm", w.Bytes())
-}