1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/intl/unicharutil/util/nsUnicodeProperties.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,168 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef NS_UNICODEPROPERTIES_H
1.10 +#define NS_UNICODEPROPERTIES_H
1.11 +
1.12 +#include "nsBidiUtils.h"
1.13 +#include "nsIUGenCategory.h"
1.14 +#include "nsUnicodeScriptCodes.h"
1.15 +
1.16 +const nsCharProps1& GetCharProps1(uint32_t aCh);
1.17 +const nsCharProps2& GetCharProps2(uint32_t aCh);
1.18 +
1.19 +namespace mozilla {
1.20 +
1.21 +namespace unicode {
1.22 +
1.23 +extern nsIUGenCategory::nsUGenCategory sDetailedToGeneralCategory[];
1.24 +
1.25 +uint32_t GetMirroredChar(uint32_t aCh);
1.26 +
1.27 +inline uint8_t GetCombiningClass(uint32_t aCh) {
1.28 + return GetCharProps1(aCh).mCombiningClass;
1.29 +}
1.30 +
1.31 +// returns the detailed General Category in terms of HB_UNICODE_* values
1.32 +inline uint8_t GetGeneralCategory(uint32_t aCh) {
1.33 + return GetCharProps2(aCh).mCategory;
1.34 +}
1.35 +
1.36 +// returns the simplified Gen Category as defined in nsIUGenCategory
1.37 +inline nsIUGenCategory::nsUGenCategory GetGenCategory(uint32_t aCh) {
1.38 + return sDetailedToGeneralCategory[GetGeneralCategory(aCh)];
1.39 +}
1.40 +
1.41 +inline uint8_t GetEastAsianWidth(uint32_t aCh) {
1.42 + return GetCharProps2(aCh).mEAW;
1.43 +}
1.44 +
1.45 +inline uint8_t GetScriptCode(uint32_t aCh) {
1.46 + return GetCharProps2(aCh).mScriptCode;
1.47 +}
1.48 +
1.49 +uint32_t GetScriptTagForCode(int32_t aScriptCode);
1.50 +
1.51 +inline nsCharType GetBidiCat(uint32_t aCh) {
1.52 + return nsCharType(GetCharProps2(aCh).mBidiCategory);
1.53 +}
1.54 +
1.55 +enum XidmodType {
1.56 + XIDMOD_INCLUSION,
1.57 + XIDMOD_RECOMMENDED,
1.58 + XIDMOD_DEFAULT_IGNORABLE,
1.59 + XIDMOD_HISTORIC,
1.60 + XIDMOD_LIMITED_USE,
1.61 + XIDMOD_NOT_NFKC,
1.62 + XIDMOD_NOT_XID,
1.63 + XIDMOD_OBSOLETE,
1.64 + XIDMOD_TECHNICAL,
1.65 + XIDMOD_NOT_CHARS
1.66 +};
1.67 +
1.68 +inline XidmodType GetIdentifierModification(uint32_t aCh) {
1.69 + return XidmodType(GetCharProps2(aCh).mXidmod);
1.70 +}
1.71 +
1.72 +inline bool IsRestrictedForIdentifiers(uint32_t aCh) {
1.73 + XidmodType xm = GetIdentifierModification(aCh);
1.74 + return (xm > XIDMOD_RECOMMENDED);
1.75 +}
1.76 +
1.77 +/**
1.78 + * Return the numeric value of the character. The value returned is the value
1.79 + * of the Numeric_Value in field 7 of the UCD, or -1 if field 7 is empty.
1.80 + * To restrict to decimal digits, the caller should also check whether
1.81 + * GetGeneralCategory returns HB_UNICODE_GENERAL_CATEGORY_DECIMAL_NUMBER
1.82 + */
1.83 +inline int8_t GetNumericValue(uint32_t aCh) {
1.84 + return GetCharProps2(aCh).mNumericValue;
1.85 +}
1.86 +
1.87 +enum HanVariantType {
1.88 + HVT_NotHan = 0x0,
1.89 + HVT_SimplifiedOnly = 0x1,
1.90 + HVT_TraditionalOnly = 0x2,
1.91 + HVT_AnyHan = 0x3
1.92 +};
1.93 +
1.94 +HanVariantType GetHanVariant(uint32_t aCh);
1.95 +
1.96 +uint32_t GetFullWidth(uint32_t aCh);
1.97 +
1.98 +bool IsClusterExtender(uint32_t aCh, uint8_t aCategory);
1.99 +
1.100 +inline bool IsClusterExtender(uint32_t aCh) {
1.101 + return IsClusterExtender(aCh, GetGeneralCategory(aCh));
1.102 +}
1.103 +
1.104 +enum HSType {
1.105 + HST_NONE = 0x00,
1.106 + HST_L = 0x01,
1.107 + HST_V = 0x02,
1.108 + HST_T = 0x04,
1.109 + HST_LV = 0x03,
1.110 + HST_LVT = 0x07
1.111 +};
1.112 +
1.113 +inline HSType GetHangulSyllableType(uint32_t aCh) {
1.114 + return HSType(GetCharProps1(aCh).mHangulType);
1.115 +}
1.116 +
1.117 +// Case mappings for the full Unicode range;
1.118 +// note that it may be worth testing for ASCII chars and taking
1.119 +// a separate fast-path before calling these, in perf-critical places
1.120 +uint32_t GetUppercase(uint32_t aCh);
1.121 +uint32_t GetLowercase(uint32_t aCh);
1.122 +uint32_t GetTitlecaseForLower(uint32_t aCh); // maps LC to titlecase, UC unchanged
1.123 +uint32_t GetTitlecaseForAll(uint32_t aCh); // maps both UC and LC to titlecase
1.124 +
1.125 +enum ShapingType {
1.126 + SHAPING_DEFAULT = 0x0001,
1.127 + SHAPING_ARABIC = 0x0002,
1.128 + SHAPING_HEBREW = 0x0004,
1.129 + SHAPING_HANGUL = 0x0008,
1.130 + SHAPING_MONGOLIAN = 0x0010,
1.131 + SHAPING_INDIC = 0x0020,
1.132 + SHAPING_THAI = 0x0040
1.133 +};
1.134 +
1.135 +int32_t ScriptShapingType(int32_t aScriptCode);
1.136 +
1.137 +// A simple iterator for a string of char16_t codepoints that advances
1.138 +// by Unicode grapheme clusters
1.139 +class ClusterIterator
1.140 +{
1.141 +public:
1.142 + ClusterIterator(const char16_t* aText, uint32_t aLength)
1.143 + : mPos(aText), mLimit(aText + aLength)
1.144 +#ifdef DEBUG
1.145 + , mText(aText)
1.146 +#endif
1.147 + { }
1.148 +
1.149 + operator const char16_t* () const {
1.150 + return mPos;
1.151 + }
1.152 +
1.153 + bool AtEnd() const {
1.154 + return mPos >= mLimit;
1.155 + }
1.156 +
1.157 + void Next();
1.158 +
1.159 +private:
1.160 + const char16_t* mPos;
1.161 + const char16_t* mLimit;
1.162 +#ifdef DEBUG
1.163 + const char16_t* mText;
1.164 +#endif
1.165 +};
1.166 +
1.167 +} // end namespace unicode
1.168 +
1.169 +} // end namespace mozilla
1.170 +
1.171 +#endif /* NS_UNICODEPROPERTIES_H */
