ea78bac36d
Plural rules in the CLDR are of the form:
"cs": {
"pluralRule-count-one": "i = 1 and v = 0 @integer 1",
"pluralRule-count-few": "i = 2..4 and v = 0 @integer 2~4",
"pluralRule-count-many": "v != 0 @decimal 0.0~1.5, 10.0, 100.0 ...",
"pluralRule-count-other": "@integer 0, 5~19, 100, 1000, 10000 ..."
}
The syntax is described here:
https://unicode.org/reports/tr35/tr35-numbers.html#Plural_rules_syntax
There are up to 2 sets of rules for each locale, a cardinal set and an
ordinal set. The approach here is to generate a C++ function for each
set of rules. Each condition in the rules (e.g. "i = 1 and v = 0") is
transpiled to a C++ if-statement within its function. Then lookup tables
are generated to match locales to their generated functions.
NOTE: -Wno-parentheses-equality is added to the LibUnicodeData compile
flags because the generated plural rules have lots of extra parentheses
(because e.g. we need to selectively negate and combine rules). The code
to generate only exactly the right number of parentheses is quite hairy,
so this just tells the compiler to ignore the extras.
72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
/*
|
|
* Copyright (c) 2021-2022, Tim Flynn <trflynn89@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Types.h>
|
|
|
|
namespace Unicode {
|
|
|
|
enum class Block : u16;
|
|
enum class CalendarFormatType : u8;
|
|
enum class CalendarPatternStyle : u8;
|
|
enum class CalendarSymbol : u8;
|
|
enum class CharacterOrder : u8;
|
|
enum class CompactNumberFormatType : u8;
|
|
enum class Condition : u8;
|
|
enum class Currency : u16;
|
|
enum class DateField : u8;
|
|
enum class DayPeriod : u8;
|
|
enum class Era : u8;
|
|
enum class FirstDayRegion : u8;
|
|
enum class GeneralCategory : u8;
|
|
enum class GraphemeBreakProperty : u8;
|
|
enum class HourCycle : u8;
|
|
enum class HourCycleRegion : u16;
|
|
enum class Key : u8;
|
|
enum class KeywordCalendar : u8;
|
|
enum class KeywordColCaseFirst : u8;
|
|
enum class KeywordColNumeric : u8;
|
|
enum class KeywordNumbers : u8;
|
|
enum class Language : u16;
|
|
enum class ListPatternStyle : u8;
|
|
enum class ListPatternType : u8;
|
|
enum class Locale : u16;
|
|
enum class MinimumDaysRegion : u8;
|
|
enum class Month : u8;
|
|
enum class NumericSymbol : u8;
|
|
enum class PluralCategory : u8;
|
|
enum class Property : u8;
|
|
enum class Script : u8;
|
|
enum class ScriptTag : u8;
|
|
enum class SentenceBreakProperty : u8;
|
|
enum class StandardNumberFormatType : u8;
|
|
enum class Style : u8;
|
|
enum class Territory : u8;
|
|
enum class Weekday : u8;
|
|
enum class WeekendEndRegion : u8;
|
|
enum class WeekendStartRegion : u8;
|
|
enum class WordBreakProperty : u8;
|
|
|
|
struct CalendarFormat;
|
|
struct CalendarPattern;
|
|
struct CalendarRangePattern;
|
|
struct CurrencyCode;
|
|
struct Keyword;
|
|
struct LanguageID;
|
|
struct ListPatterns;
|
|
struct LocaleExtension;
|
|
struct LocaleID;
|
|
struct NumberFormat;
|
|
struct NumberGroupings;
|
|
struct OtherExtension;
|
|
struct PluralOperands;
|
|
struct SpecialCasing;
|
|
struct TransformedExtension;
|
|
struct TransformedField;
|
|
struct UnicodeData;
|
|
|
|
}
|