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https://github.com/LadybirdBrowser/ladybird
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ef899027c5
Commit 86c8a57794 caused one regression in
test/intl402/DateTimeFormat. It is expected that Intl.DateTimeFormat and
Temporal produce consistent results.
Due to the píngqì approximation implemented in icu4x, it actually does
not totally align with icu4c for lunisolar calendars at extreme dates.
Ideally, icu4x will one day support all Intl.DateTimeFormat operations
as well. But for now, the fix is to create a custom icu::Calendar class
for lunisolar calendars that pipes calculations to icu4x.
67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
/*
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* Copyright (c) 2026, Tim Flynn <trflynn89@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Optional.h>
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#include <AK/String.h>
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#include <AK/Types.h>
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namespace Unicode {
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// 3.5.1 ISO Date Records, https://tc39.es/proposal-temporal/#sec-temporal-iso-date-records
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struct ISODate {
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i32 year { 0 };
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u8 month { 0 };
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u8 day { 0 };
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};
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// 12.2 Month Codes, https://tc39.es/proposal-temporal/#sec-temporal-month-codes
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struct MonthCode {
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u8 month_number { 0 };
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bool is_leap_month { false };
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};
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// 14.3 The Year-Week Record Specification Type, https://tc39.es/proposal-temporal/#sec-year-week-record-specification-type
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struct YearWeek {
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Optional<u8> week;
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Optional<i32> year;
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};
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// 12.3.1 Calendar Date Records, https://tc39.es/proposal-temporal/#sec-temporal-calendar-date-records
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struct CalendarDate {
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Optional<String> era;
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Optional<i32> era_year;
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i32 year { 0 };
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u8 month { 0 };
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String month_code;
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u8 day { 0 };
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u8 day_of_week { 0 };
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u16 day_of_year { 0 };
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YearWeek week_of_year;
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u8 days_in_week { 0 };
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u8 days_in_month { 0 };
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u16 days_in_year { 0 };
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u8 months_in_year { 0 };
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bool in_leap_year { false };
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};
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Optional<MonthCode> parse_month_code(StringView month_code);
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String create_month_code(u8 month_number, bool is_leap_month);
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CalendarDate iso_date_to_calendar_date(String const& calendar, ISODate);
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Optional<ISODate> calendar_date_to_iso_date(String const& calendar, i32 year, u8 month, u8 day);
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Optional<ISODate> iso_year_and_month_code_to_iso_date(String const& calendar, i32 year, StringView month_code, u8 day);
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Optional<ISODate> calendar_year_and_month_code_to_iso_date(String const& calendar, i32 arithmetic_year, StringView month_code, u8 day);
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u8 calendar_months_in_year(String const& calendar, i32 arithmetic_year);
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u8 calendar_days_in_month(String const& calendar, i32 arithmetic_year, u8 ordinal_month);
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u8 calendar_max_days_in_month_code(String const& calendar, StringView month_code);
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bool calendar_year_contains_month_code(String const& calendar, i32 arithmetic_year, StringView month_code);
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}
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