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Bug 1719554 - Unify most of nsUnicodeProperties.h; r=platform-i18n-re…
…viewers,jfkthame,gregtatum,necko-reviewers,valentin This unifies most of the calls in nsUnicodeProperties.h. CharType and Script will be handled in subsequent patches on this bug. Differential Revision: https://phabricator.services.mozilla.com/D132273
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,219 @@ | ||
| /* This Source Code Form is subject to the terms of the Mozilla Public | ||
| * License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | ||
| #ifndef intl_components_UnicodeProperties_h_ | ||
| #define intl_components_UnicodeProperties_h_ | ||
|
|
||
| #include "unicode/uchar.h" | ||
| #include "unicode/uscript.h" | ||
|
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| namespace mozilla::intl { | ||
|
|
||
| /** | ||
| * This component is a Mozilla-focused API for working with text properties. | ||
| */ | ||
| class UnicodeProperties final { | ||
| public: | ||
| /** | ||
| * Maps the specified character to a "mirror-image" character. | ||
| */ | ||
| static inline uint32_t CharMirror(uint32_t aCh) { return u_charMirror(aCh); } | ||
|
|
||
| /** | ||
| * Return the general category value for the code point. | ||
| */ | ||
| static inline uint32_t CharType(uint32_t aCh) { return u_charType(aCh); } | ||
|
|
||
| /** | ||
| * Determine whether the code point has the Bidi_Mirrored property. | ||
| */ | ||
| static inline bool IsMirrored(uint32_t aCh) { return u_isMirrored(aCh); } | ||
|
|
||
| /** | ||
| * Returns the combining class of the code point as specified in | ||
| * UnicodeData.txt. | ||
| */ | ||
| static inline uint8_t GetCombiningClass(uint32_t aCh) { | ||
| return u_getCombiningClass(aCh); | ||
| } | ||
|
|
||
| enum class IntProperty { | ||
| BidiPairedBracketType, | ||
| EastAsianWidth, | ||
| HangulSyllableType, | ||
| LineBreak, | ||
| NumericType, | ||
| }; | ||
|
|
||
| /** | ||
| * Get the property value for an enumerated or integer Unicode property for a | ||
| * code point. | ||
| */ | ||
| static inline int32_t GetIntPropertyValue(uint32_t aCh, IntProperty aProp) { | ||
| UProperty prop; | ||
| switch (aProp) { | ||
| case IntProperty::BidiPairedBracketType: | ||
| prop = UCHAR_BIDI_PAIRED_BRACKET_TYPE; | ||
| break; | ||
| case IntProperty::EastAsianWidth: | ||
| prop = UCHAR_EAST_ASIAN_WIDTH; | ||
| break; | ||
| case IntProperty::HangulSyllableType: | ||
| prop = UCHAR_HANGUL_SYLLABLE_TYPE; | ||
| break; | ||
| case IntProperty::LineBreak: | ||
| prop = UCHAR_LINE_BREAK; | ||
| break; | ||
| case IntProperty::NumericType: | ||
| prop = UCHAR_NUMERIC_TYPE; | ||
| break; | ||
| } | ||
| return u_getIntPropertyValue(aCh, prop); | ||
| } | ||
|
|
||
| /** | ||
| * Get the numeric value for a Unicode code point as defined in the | ||
| * Unicode Character Database if the input is decimal or a digit, | ||
| * otherwise, returns -1. | ||
| */ | ||
| static inline int8_t GetNumericValue(uint32_t aCh) { | ||
| UNumericType type = | ||
| UNumericType(GetIntPropertyValue(aCh, IntProperty::NumericType)); | ||
| return type == U_NT_DECIMAL || type == U_NT_DIGIT | ||
| ? int8_t(u_getNumericValue(aCh)) | ||
| : -1; | ||
| } | ||
|
|
||
| /** | ||
| * Maps the specified character to its paired bracket character. | ||
| */ | ||
| static inline uint32_t GetBidiPairedBracket(uint32_t aCh) { | ||
| return u_getBidiPairedBracket(aCh); | ||
| } | ||
|
|
||
| /** | ||
| * The given character is mapped to its uppercase equivalent according to | ||
| * UnicodeData.txt; if the character has no uppercase equivalent, the | ||
| * character itself is returned. | ||
| */ | ||
| static inline uint32_t ToUpper(uint32_t aCh) { return u_toupper(aCh); } | ||
|
|
||
| /** | ||
| * The given character is mapped to its lowercase equivalent according to | ||
| * UnicodeData.txt; if the character has no lowercase equivalent, the | ||
| * character itself is returned. | ||
| */ | ||
| static inline uint32_t ToLower(uint32_t aCh) { return u_tolower(aCh); } | ||
|
|
||
| /** | ||
| * Check if a code point has the Lowercase Unicode property. | ||
| */ | ||
| static inline bool IsLowercase(uint32_t aCh) { return u_isULowercase(aCh); } | ||
|
|
||
| /** | ||
| * The given character is mapped to its titlecase equivalent according to | ||
| * UnicodeData.txt; if the character has no titlecase equivalent, the | ||
| * character itself is returned. | ||
| */ | ||
| static inline uint32_t ToTitle(uint32_t aCh) { return u_totitle(aCh); } | ||
|
|
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| /** | ||
| * The given character is mapped to its case folding equivalent according to | ||
| * UnicodeData.txt and CaseFolding.txt; | ||
| * if the character has no case folding equivalent, the character | ||
| * itself is returned. | ||
| */ | ||
| static inline uint32_t FoldCase(uint32_t aCh) { | ||
| return u_foldCase(aCh, U_FOLD_CASE_DEFAULT); | ||
| } | ||
|
|
||
| enum class BinaryProperty { | ||
| DefaultIgnorableCodePoint, | ||
| Emoji, | ||
| EmojiPresentation, | ||
| }; | ||
|
|
||
| /** | ||
| * Check a binary Unicode property for a code point. | ||
| */ | ||
| static inline bool HasBinaryProperty(uint32_t aCh, BinaryProperty aProp) { | ||
| UProperty prop; | ||
| switch (aProp) { | ||
| case BinaryProperty::DefaultIgnorableCodePoint: | ||
| prop = UCHAR_DEFAULT_IGNORABLE_CODE_POINT; | ||
| break; | ||
| case BinaryProperty::Emoji: | ||
| prop = UCHAR_EMOJI; | ||
| break; | ||
| case BinaryProperty::EmojiPresentation: | ||
| prop = UCHAR_EMOJI_PRESENTATION; | ||
| break; | ||
| } | ||
| return u_hasBinaryProperty(aCh, prop); | ||
| } | ||
|
|
||
| /** | ||
| * Check if the width of aCh is full width, half width or wide | ||
| * excluding emoji. | ||
| */ | ||
| static inline bool IsEastAsianWidthFHWexcludingEmoji(uint32_t aCh) { | ||
| switch (GetIntPropertyValue(aCh, IntProperty::EastAsianWidth)) { | ||
| case U_EA_FULLWIDTH: | ||
| case U_EA_HALFWIDTH: | ||
| return true; | ||
| case U_EA_WIDE: | ||
| return HasBinaryProperty(aCh, BinaryProperty::Emoji) ? false : true; | ||
| case U_EA_AMBIGUOUS: | ||
| case U_EA_NARROW: | ||
| case U_EA_NEUTRAL: | ||
| return false; | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| /** | ||
| * Check if the width of aCh is ambiguous, full width, or wide. | ||
| */ | ||
| static inline bool IsEastAsianWidthAFW(uint32_t aCh) { | ||
| switch (GetIntPropertyValue(aCh, IntProperty::EastAsianWidth)) { | ||
| case U_EA_AMBIGUOUS: | ||
| case U_EA_FULLWIDTH: | ||
| case U_EA_WIDE: | ||
| return true; | ||
| case U_EA_HALFWIDTH: | ||
| case U_EA_NARROW: | ||
| case U_EA_NEUTRAL: | ||
| return false; | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| /** | ||
| * Check if the width of aCh is full width, or wide. | ||
| */ | ||
| static inline bool IsEastAsianWidthFW(uint32_t aCh) { | ||
| switch (GetIntPropertyValue(aCh, IntProperty::EastAsianWidth)) { | ||
| case U_EA_FULLWIDTH: | ||
| case U_EA_WIDE: | ||
| return true; | ||
| case U_EA_AMBIGUOUS: | ||
| case U_EA_HALFWIDTH: | ||
| case U_EA_NARROW: | ||
| case U_EA_NEUTRAL: | ||
| return false; | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| /** | ||
| * Check if the CharType of aCh is math or other symbol. | ||
| */ | ||
| static inline bool IsMathOrMusicSymbol(uint32_t aCh) { | ||
| // Keep this function in sync with is_math_symbol in base_chars.py. | ||
| return CharType(aCh) == U_MATH_SYMBOL || CharType(aCh) == U_OTHER_SYMBOL; | ||
| } | ||
| }; | ||
|
|
||
| } // namespace mozilla::intl | ||
|
|
||
| #endif |
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