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|
//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2022-2025 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import GenUtils
extension Unicode {
/// Character script types.
///
/// Note this includes the "meta" script type "Katakana_Or_Hiragana", which
/// isn't defined by https://www.unicode.org/Public/UCD/latest/ucd/Scripts.txt,
/// but is defined by https://www.unicode.org/Public/UCD/latest/ucd/PropertyValueAliases.txt.
/// We may want to split it out, as it's the only case that is a union of
/// other script types.
public enum Script: String, Hashable, CaseIterable {
case adlam = "Adlam"
case ahom = "Ahom"
case anatolianHieroglyphs = "Anatolian_Hieroglyphs"
case arabic = "Arabic"
case armenian = "Armenian"
case avestan = "Avestan"
case balinese = "Balinese"
case bamum = "Bamum"
case bassaVah = "Bassa_Vah"
case batak = "Batak"
case bengali = "Bengali"
case bhaiksuki = "Bhaiksuki"
case bopomofo = "Bopomofo"
case brahmi = "Brahmi"
case braille = "Braille"
case buginese = "Buginese"
case buhid = "Buhid"
case canadianAboriginal = "Canadian_Aboriginal"
case carian = "Carian"
case caucasianAlbanian = "Caucasian_Albanian"
case chakma = "Chakma"
case cham = "Cham"
case cherokee = "Cherokee"
case chorasmian = "Chorasmian"
case common = "Common"
case coptic = "Coptic"
case cuneiform = "Cuneiform"
case cypriot = "Cypriot"
case cyrillic = "Cyrillic"
case cyproMinoan = "Cypro_Minoan"
case deseret = "Deseret"
case devanagari = "Devanagari"
case divesAkuru = "Dives_Akuru"
case dogra = "Dogra"
case duployan = "Duployan"
case egyptianHieroglyphs = "Egyptian_Hieroglyphs"
case elbasan = "Elbasan"
case elymaic = "Elymaic"
case ethiopic = "Ethiopic"
case garay = "Garay"
case georgian = "Georgian"
case glagolitic = "Glagolitic"
case gothic = "Gothic"
case grantha = "Grantha"
case greek = "Greek"
case gujarati = "Gujarati"
case gunjalaGondi = "Gunjala_Gondi"
case gurmukhi = "Gurmukhi"
case gurungKhema = "Gurung_Khema"
case han = "Han"
case hangul = "Hangul"
case hanifiRohingya = "Hanifi_Rohingya"
case hanunoo = "Hanunoo"
case hatran = "Hatran"
case hebrew = "Hebrew"
case hiragana = "Hiragana"
case imperialAramaic = "Imperial_Aramaic"
case inherited = "Inherited"
case inscriptionalPahlavi = "Inscriptional_Pahlavi"
case inscriptionalParthian = "Inscriptional_Parthian"
case javanese = "Javanese"
case kaithi = "Kaithi"
case kannada = "Kannada"
case katakana = "Katakana"
case katakanaOrHiragana = "Katakana_Or_Hiragana"
case kawi = "Kawi"
case kayahLi = "Kayah_Li"
case kharoshthi = "Kharoshthi"
case khitanSmallScript = "Khitan_Small_Script"
case khmer = "Khmer"
case khojki = "Khojki"
case khudawadi = "Khudawadi"
case lao = "Lao"
case latin = "Latin"
case lepcha = "Lepcha"
case limbu = "Limbu"
case linearA = "Linear_A"
case linearB = "Linear_B"
case lisu = "Lisu"
case lycian = "Lycian"
case lydian = "Lydian"
case kiratRai = "Kirat_Rai"
case mahajani = "Mahajani"
case makasar = "Makasar"
case malayalam = "Malayalam"
case mandaic = "Mandaic"
case manichaean = "Manichaean"
case marchen = "Marchen"
case masaramGondi = "Masaram_Gondi"
case medefaidrin = "Medefaidrin"
case meeteiMayek = "Meetei_Mayek"
case mendeKikakui = "Mende_Kikakui"
case meroiticCursive = "Meroitic_Cursive"
case meroiticHieroglyphs = "Meroitic_Hieroglyphs"
case miao = "Miao"
case modi = "Modi"
case mongolian = "Mongolian"
case mro = "Mro"
case multani = "Multani"
case myanmar = "Myanmar"
case nabataean = "Nabataean"
case nagMundari = "Nag_Mundari"
case nandinagari = "Nandinagari"
case newa = "Newa"
case newTaiLue = "New_Tai_Lue"
case nko = "Nko"
case nushu = "Nushu"
case nyiakengPuachueHmong = "Nyiakeng_Puachue_Hmong"
case ogham = "Ogham"
case olChiki = "Ol_Chiki"
case oldHungarian = "Old_Hungarian"
case oldItalic = "Old_Italic"
case oldNorthArabian = "Old_North_Arabian"
case oldPermic = "Old_Permic"
case oldPersian = "Old_Persian"
case oldSogdian = "Old_Sogdian"
case oldSouthArabian = "Old_South_Arabian"
case oldTurkic = "Old_Turkic"
case oldUyghur = "Old_Uyghur"
case olOnal = "Ol_Onal"
case oriya = "Oriya"
case osage = "Osage"
case osmanya = "Osmanya"
case pahawhHmong = "Pahawh_Hmong"
case palmyrene = "Palmyrene"
case pauCinHau = "Pau_Cin_Hau"
case phagsPa = "Phags_Pa"
case phoenician = "Phoenician"
case psalterPahlavi = "Psalter_Pahlavi"
case rejang = "Rejang"
case runic = "Runic"
case samaritan = "Samaritan"
case saurashtra = "Saurashtra"
case sharada = "Sharada"
case shavian = "Shavian"
case siddham = "Siddham"
case signWriting = "SignWriting"
case sinhala = "Sinhala"
case sogdian = "Sogdian"
case soraSompeng = "Sora_Sompeng"
case soyombo = "Soyombo"
case sundanese = "Sundanese"
case sunuwar = "Sunuwar"
case sylotiNagri = "Syloti_Nagri"
case syriac = "Syriac"
case tagalog = "Tagalog"
case tagbanwa = "Tagbanwa"
case taiLe = "Tai_Le"
case taiTham = "Tai_Tham"
case taiViet = "Tai_Viet"
case takri = "Takri"
case tamil = "Tamil"
case tangsa = "Tangsa"
case tangut = "Tangut"
case telugu = "Telugu"
case thaana = "Thaana"
case thai = "Thai"
case tibetan = "Tibetan"
case tifinagh = "Tifinagh"
case tirhuta = "Tirhuta"
case todhri = "Todhri"
case toto = "Toto"
case tuluTigalari = "Tulu_Tigalari"
case ugaritic = "Ugaritic"
case unknown = "Unknown"
case vai = "Vai"
case vithkuqi = "Vithkuqi"
case wancho = "Wancho"
case warangCiti = "Warang_Citi"
case yezidi = "Yezidi"
case yi = "Yi"
case zanabazarSquare = "Zanabazar_Square"
}
}
func scriptAbbr2Enum(_ str: String) -> Unicode.Script {
switch str {
case "Adlm", "adlam": return .adlam
case "Aghb", "caucasianalbanian": return .caucasianAlbanian
case "Ahom": return .ahom
case "Arab", "arabic": return .arabic
case "Armi", "imperialaramaic": return .imperialAramaic
case "Armn", "armenian": return .armenian
case "Avst", "avestan": return .avestan
case "Bali", "balinese": return .balinese
case "Bamu", "bamum": return .bamum
case "Bass", "bassavah": return .bassaVah
case "Batk", "batak": return .batak
case "Beng", "bengali": return .bengali
case "Bhks", "bhaiksuki": return .bhaiksuki
case "Bopo", "bopomofo": return .bopomofo
case "Brah", "brahmi": return .brahmi
case "Brai", "braille": return .braille
case "Bugi", "buginese": return .buginese
case "Buhd", "buhid": return .buhid
case "Cakm", "chakma": return .chakma
case "Cans", "canadianaboriginal": return .canadianAboriginal
case "Cari", "carian": return .carian
case "Cham": return .cham
case "Cher", "cherokee": return .cherokee
case "Chrs", "chorasmian": return .chorasmian
case "Copt", "coptic", "qaac": return .coptic
case "Cpmn", "cyprominoan": return .cyproMinoan
case "Cprt", "cypriot": return .cypriot
case "Cyrl", "cyrillic": return .cyrillic
case "Deva", "devanagari": return .devanagari
case "Diak", "divesakuru": return .divesAkuru
case "Dogr", "dogra": return .dogra
case "Dsrt", "deseret": return .deseret
case "Dupl", "duployan": return .duployan
case "Egyp", "egyptianhieroglyphs": return .egyptianHieroglyphs
case "Elba", "elbasan": return .elbasan
case "Elym", "elymaic": return .elymaic
case "Ethi", "ethiopic": return .ethiopic
case "Gara": return .garay
case "Geor", "georgian": return .georgian
case "Glag", "glagolitic": return .glagolitic
case "Gong", "gunjalagondi": return .gunjalaGondi
case "Gonm", "masaramgondi": return .masaramGondi
case "Goth", "gothic": return .gothic
case "Gran", "grantha": return .grantha
case "Grek", "greek": return .greek
case "Gujr", "gujarati": return .gujarati
case "Gukh": return .gurungKhema
case "Guru", "gurmukhi": return .gurmukhi
case "Hang", "hangul": return .hangul
case "Hani", "han": return .han
case "Hano", "hanunoo": return .hanunoo
case "Hatr", "hatran": return .hatran
case "Hebr", "hebrew": return .hebrew
case "Hira", "hiragana": return .hiragana
case "Hluw", "anatolianhieroglyphs": return .anatolianHieroglyphs
case "Hmng", "pahawhhmong": return .pahawhHmong
case "Hmnp", "nyiakengpuachuehmong": return .nyiakengPuachueHmong
case "Hrkt", "katakanaorhiragana": return .katakanaOrHiragana
case "Hung", "oldhungarian": return .oldHungarian
case "Ital", "olditalic": return .oldItalic
case "Java", "javanese": return .javanese
case "Kali", "kayahli": return .kayahLi
case "Kawi": return .kawi
case "Kana", "katakana": return .katakana
case "Khar", "kharoshthi": return .kharoshthi
case "Khmr", "khmer": return .khmer
case "Khoj", "khojki": return .khojki
case "Kits", "khitansmallscript": return .khitanSmallScript
case "Knda", "kannada": return .kannada
case "Krai": return .kiratRai
case "Kthi", "kaithi": return .kaithi
case "Lana", "taitham": return .taiTham
case "Laoo", "lao": return .lao
case "Latn", "latin": return .latin
case "Lepc", "lepcha": return .lepcha
case "Limb", "limbu": return .limbu
case "Lina", "lineara": return .linearA
case "Linb", "linearb": return .linearB
case "Lisu": return .lisu
case "Lyci", "lycian": return .lycian
case "Lydi", "lydian": return .lydian
case "Mahj", "mahajani": return .mahajani
case "Maka", "makasar": return .makasar
case "Mand", "mandaic": return .mandaic
case "Mani", "manichaean": return .manichaean
case "Marc", "marchen": return .marchen
case "Medf", "medefaidrin": return .medefaidrin
case "Mend", "mendekikakui": return .mendeKikakui
case "Merc", "meroiticcursive": return .meroiticCursive
case "Mero", "meroitichieroglyphs": return .meroiticHieroglyphs
case "Mlym", "malayalam": return .malayalam
case "Modi": return .modi
case "Mong", "mongolian": return .mongolian
case "Mroo", "mro": return .mro
case "Mtei", "meeteimayek": return .meeteiMayek
case "Mult", "multani": return .multani
case "Mymr", "myanmar": return .myanmar
case "Nagm": return .nagMundari
case "Nand", "nandinagari": return .nandinagari
case "Narb", "oldnortharabian": return .oldNorthArabian
case "Nbat", "nabataean": return .nabataean
case "Newa": return .newa
case "Nkoo", "nko": return .nko
case "Nshu", "nushu": return .nushu
case "Ogam", "ogham": return .ogham
case "Olck", "olchiki": return .olChiki
case "Onao": return .olOnal
case "Orkh", "oldturkic": return .oldTurkic
case "Orya", "oriya": return .oriya
case "Osge", "osage": return .osage
case "Osma", "osmanya": return .osmanya
case "Ougr", "olduyghur": return .oldUyghur
case "Palm", "palmyrene": return .palmyrene
case "Pauc", "paucinhau": return .pauCinHau
case "Perm", "oldpermic": return .oldPermic
case "Phag", "phagspa": return .phagsPa
case "Phli", "inscriptionalpahlavi": return .inscriptionalPahlavi
case "Phlp", "psalterpahlavi": return .psalterPahlavi
case "Phnx", "phoenician": return .phoenician
case "Plrd", "miao": return .miao
case "Prti", "inscriptionalparthian": return .inscriptionalParthian
case "Rjng", "rejang": return .rejang
case "Rohg", "hanifirohingya": return .hanifiRohingya
case "Runr", "runic": return .runic
case "Samr", "samaritan": return .samaritan
case "Sarb", "oldsoutharabian": return .oldSouthArabian
case "Saur", "saurashtra": return .saurashtra
case "Sgnw", "signwriting": return .signWriting
case "Shaw", "shavian": return .shavian
case "Shrd", "sharada": return .sharada
case "Sidd", "siddham": return .siddham
case "Sind", "khudawadi": return .khudawadi
case "Sinh", "sinhala": return .sinhala
case "Sogd", "sogdian": return .sogdian
case "Sogo", "oldsogdian": return .oldSogdian
case "Sora", "sorasompeng": return .soraSompeng
case "Soyo", "soyombo": return .soyombo
case "Sund", "sundanese": return .sundanese
case "Sunu": return .sunuwar
case "Sylo", "sylotinagri": return .sylotiNagri
case "Syrc", "syriac": return .syriac
case "Tagb", "tagbanwa": return .tagbanwa
case "Takr", "takri": return .takri
case "Tale", "taile": return .taiLe
case "Talu", "newtailue": return .newTaiLue
case "Taml", "tamil": return .tamil
case "Tang", "tangut": return .tangut
case "Tavt", "taiviet": return .taiViet
case "Telu", "telugu": return .telugu
case "Tfng", "tifinagh": return .tifinagh
case "Tglg", "tagalog": return .tagalog
case "Thaa", "thaana": return .thaana
case "Thai": return .thai
case "Tibt", "tibetan": return .tibetan
case "Tirh", "tirhuta": return .tirhuta
case "Tnsa", "tangsa": return .tangsa
case "Todr": return .todhri
case "Toto": return .toto
case "Tutg": return .tuluTigalari
case "Ugar", "ugaritic": return .ugaritic
case "Vaii", "vai": return .vai
case "Vith", "vithkuqi": return .vithkuqi
case "Wara", "warangciti": return .warangCiti
case "Wcho", "wancho": return .wancho
case "Xpeo", "oldpersian": return .oldPersian
case "Xsux", "cuneiform": return .cuneiform
case "Yezi", "yezidi": return .yezidi
case "Yiii", "yi": return .yi
case "Zanb", "zanabazarsquare": return .zanabazarSquare
case "Zinh", "inherited", "qaai": return .inherited
case "Zyyy", "common": return .common
case "Zzzz", "unknown": return .unknown
default: fatalError("Unknown script: \(str)")
}
}
func getScriptData(
for path: String
) -> [(ClosedRange<UInt32>, String)] {
let data = readFile(path)
var unflattened: [(ClosedRange<UInt32>, String)] = []
for line in data.split(separator: "\n") {
// Skip comments
guard !line.hasPrefix("#") else {
continue
}
// Each line in this file is broken up into two sections:
// 1: Either the singular scalar or a range of scalars who conform to said
// grapheme break property.
// 2: The script that said scalar(s) conforms to.
let components = line.split(separator: ";")
// Get the script first because it may be one we don't care about.
let splitProperty = components[1].split(separator: "#")
let filteredProperty = splitProperty[0].filter { !$0.isWhitespace }
guard Unicode.Script(rawValue: filteredProperty) != nil else {
fatalError("Please add the following script: \(filteredProperty)")
}
let scalars: ClosedRange<UInt32>
let filteredScalars = components[0].filter { !$0.isWhitespace }
// If we have . appear, it means we have a legitimate range. Otherwise,
// it's a singular scalar.
if filteredScalars.contains(".") {
let range = filteredScalars.split(separator: ".")
scalars = UInt32(range[0], radix: 16)! ... UInt32(range[1], radix: 16)!
} else {
let scalar = UInt32(filteredScalars, radix: 16)!
scalars = scalar ... scalar
}
unflattened.append((scalars, filteredProperty))
}
return flatten(unflattened)
}
func getScriptExtensionData(
for path: String
) -> [(ClosedRange<UInt32>, [String])] {
let data = readFile(path)
var unflattened: [(ClosedRange<UInt32>, [String])] = []
for line in data.split(separator: "\n") {
// Skip comments
guard !line.hasPrefix("#") else {
continue
}
// Each line in this file is broken up into two sections:
// 1: Either the singular scalar or a range of scalars who conform to said
// grapheme break property.
// 2: The grapheme break property that said scalar(s) conform to (with
// additional comments noting the character category, name and amount of
// scalars the range represents).
let components = line.split(separator: ";")
// Get the property first because it may be one we don't care about.
let splitProperty = components[1].split(separator: "#")
let scripts = splitProperty[0].split(separator: " ").map { String($0) }
let scalars: ClosedRange<UInt32>
let filteredScalars = components[0].filter { !$0.isWhitespace }
// If we have . appear, it means we have a legitimate range. Otherwise,
// it's a singular scalar.
if filteredScalars.contains(".") {
let range = filteredScalars.split(separator: ".")
scalars = UInt32(range[0], radix: 16)! ... UInt32(range[1], radix: 16)!
} else {
let scalar = UInt32(filteredScalars, radix: 16)!
scalars = scalar ... scalar
}
unflattened.append((scalars, scripts))
}
return flatten(unflattened)
}
func emitScriptData(
_ data: [(ClosedRange<UInt32>, String)],
into result: inout String
) {
var scriptData: [UInt32: Unicode.Script] = [:]
for (range, property) in data {
for scalar in range {
scriptData[scalar] = Unicode.Script(rawValue: property)
}
}
for i in 0x0 ... 0x10FFFF {
guard let scalar = Unicode.Scalar(i) else {
continue
}
if !scriptData.keys.contains(scalar.value) {
scriptData[scalar.value] = .unknown
}
}
let data = flatten(Array(scriptData))
result += """
#define SCRIPTS_COUNT \(data.count)
"""
emitCollection(
data,
name: "_swift_stdlib_scripts",
type: "__swift_uint32_t",
into: &result
) {
var value = $0.0.lowerBound
value |= UInt32(unsafeBitCast($0.1, to: UInt8.self)) << 21
return "0x\(String(value, radix: 16, uppercase: true))"
}
}
func emitScriptExtensionData(
_ data: [(ClosedRange<UInt32>, [String])],
into result: inout String
) {
var indices: [[String]: UInt16] = [:]
var bytes: [UInt8] = []
var currentIndex: UInt16 = 0
for (_, scripts) in data {
guard !indices.keys.contains(scripts) else {
continue
}
indices[scripts] = currentIndex | (UInt16(scripts.count) << 11)
for script in scripts {
let scriptEnum = scriptAbbr2Enum(script)
let byte = unsafeBitCast(scriptEnum, to: UInt8.self)
bytes.append(byte)
currentIndex += 1
}
}
// 64 bit arrays * 8 bytes = .512 KB
var bitArrays: [BitArray] = .init(repeating: .init(size: 64), count: 64)
let chunkSize = 0x110000 / 64 / 64
var chunks: [Int] = []
for i in 0 ..< 64 * 64 {
let lower = i * chunkSize
let upper = lower + chunkSize - 1
let idx = i / 64
let bit = i % 64
for scalar in lower ... upper {
if data.contains(where: { $0.0.contains(UInt32(scalar)) }) {
chunks.append(i)
bitArrays[idx][bit] = true
break
}
}
}
// Remove the trailing 0s. Currently this reduces quick look size down to
// 96 bytes from 512 bytes.
var reducedBA = Array(bitArrays.reversed())
reducedBA = Array(reducedBA.drop {
$0.words == [0x0]
})
bitArrays = reducedBA.reversed()
// Keep a record of every rank for all the bitarrays.
var ranks: [UInt16] = []
// Record our quick look ranks.
var lastRank: UInt16 = 0
for (i, _) in bitArrays.enumerated() {
guard i != 0 else {
ranks.append(0)
continue
}
var rank = UInt16(bitArrays[i - 1].words[0].nonzeroBitCount)
rank += lastRank
ranks.append(rank)
lastRank = rank
}
// Insert our quick look size at the beginning.
var size = BitArray(size: 64)
size.words = [UInt64(bitArrays.count)]
bitArrays.insert(size, at: 0)
var dataIndices: [UInt16] = []
for chunk in chunks {
var chunkBA = BitArray(size: chunkSize)
let lower = chunk * chunkSize
let upper = lower + chunkSize
let chunkDataIdx = UInt64(dataIndices.endIndex)
// Insert our chunk's data index in the upper bits of the last word of our
// bit array.
chunkBA.words[chunkBA.words.endIndex - 1] |= chunkDataIdx << 16
for scalar in lower ..< upper {
if data.contains(where: { $0.0.contains(UInt32(scalar)) }) {
chunkBA[scalar % chunkSize] = true
let data = data[data.firstIndex {
$0.0.contains(UInt32(scalar))
}!].1
dataIndices.append(indices[data]!)
}
}
// Append our chunk bit array's rank.
var lastRank: UInt16 = 0
for (i, _) in chunkBA.words.enumerated() {
guard i != 0 else {
ranks.append(0)
continue
}
var rank = UInt16(chunkBA.words[i - 1].nonzeroBitCount)
rank += lastRank
ranks.append(rank)
lastRank = rank
}
bitArrays += chunkBA.words.map {
var ba = BitArray(size: 64)
ba.words = [$0]
return ba
}
}
emitCollection(
bytes,
name: "_swift_stdlib_script_extensions_data",
into: &result
)
emitCollection(
dataIndices,
name: "_swift_stdlib_script_extensions_data_indices",
into: &result
)
emitCollection(
ranks,
name: "_swift_stdlib_script_extensions_ranks",
into: &result
)
emitCollection(
bitArrays,
name: "_swift_stdlib_script_extensions",
type: "__swift_uint64_t",
into: &result
) {
assert($0.words.count == 1)
return "0x\(String($0.words[0], radix: 16, uppercase: true))"
}
}
func generateScriptProperties() {
var result = readFile("Input/ScriptData.h")
let data = getScriptData(for: "Data/16/Scripts.txt")
emitScriptData(data, into: &result)
let extensionData = getScriptExtensionData(for: "Data/16/ScriptExtensions.txt")
emitScriptExtensionData(extensionData, into: &result)
result += """
#endif // #ifndef SCRIPT_DATA_H
"""
write(result, to: "Output/Common/ScriptData.h")
}
generateScriptProperties()
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