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+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+******************************************************************************
+* Copyright (C) 2003-2016, International Business Machines Corporation
+* and others. All Rights Reserved.
+******************************************************************************
+*
+* File HEBRWCAL.CPP
+*
+* Modification History:
+*
+* Date Name Description
+* 12/03/2003 srl ported from java HebrewCalendar
+*****************************************************************************
+*/
+
+#include "hebrwcal.h"
+
+#if !UCONFIG_NO_FORMATTING
+
+#include "cmemory.h"
+#include "cstring.h"
+#include "umutex.h"
+#include <float.h>
+#include "gregoimp.h" // ClockMath
+#include "astro.h" // CalendarCache
+#include "uhash.h"
+#include "ucln_in.h"
+
+// Hebrew Calendar implementation
+
+/**
+* The absolute date, in milliseconds since 1/1/1970 AD, Gregorian,
+* of the start of the Hebrew calendar. In order to keep this calendar's
+* time of day in sync with that of the Gregorian calendar, we use
+* midnight, rather than sunset the day before.
+*/
+//static const double EPOCH_MILLIS = -180799862400000.; // 1/1/1 HY
+
+static const int32_t LIMITS[UCAL_FIELD_COUNT][4] = {
+ // Minimum Greatest Least Maximum
+ // Minimum Maximum
+ { 0, 0, 0, 0}, // ERA
+ { -5000000, -5000000, 5000000, 5000000}, // YEAR
+ { 0, 0, 12, 12}, // MONTH
+ { 1, 1, 51, 56}, // WEEK_OF_YEAR
+ {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // WEEK_OF_MONTH
+ { 1, 1, 29, 30}, // DAY_OF_MONTH
+ { 1, 1, 353, 385}, // DAY_OF_YEAR
+ {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DAY_OF_WEEK
+ { -1, -1, 5, 5}, // DAY_OF_WEEK_IN_MONTH
+ {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // AM_PM
+ {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // HOUR
+ {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // HOUR_OF_DAY
+ {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MINUTE
+ {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // SECOND
+ {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MILLISECOND
+ {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // ZONE_OFFSET
+ {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DST_OFFSET
+ { -5000000, -5000000, 5000000, 5000000}, // YEAR_WOY
+ {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DOW_LOCAL
+ { -5000000, -5000000, 5000000, 5000000}, // EXTENDED_YEAR
+ {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // JULIAN_DAY
+ {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MILLISECONDS_IN_DAY
+ {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // IS_LEAP_MONTH
+ { 0, 0, 11, 12}, // ORDINAL_MONTH
+};
+
+/**
+* The lengths of the Hebrew months. This is complicated, because there
+* are three different types of years, or six if you count leap years.
+* Due to the rules for postponing the start of the year to avoid having
+* certain holidays fall on the sabbath, the year can end up being three
+* different lengths, called "deficient", "normal", and "complete".
+*/
+static const int8_t MONTH_LENGTH[][3] = {
+ // Deficient Normal Complete
+ { 30, 30, 30 }, //Tishri
+ { 29, 29, 30 }, //Heshvan
+ { 29, 30, 30 }, //Kislev
+ { 29, 29, 29 }, //Tevet
+ { 30, 30, 30 }, //Shevat
+ { 30, 30, 30 }, //Adar I (leap years only)
+ { 29, 29, 29 }, //Adar
+ { 30, 30, 30 }, //Nisan
+ { 29, 29, 29 }, //Iyar
+ { 30, 30, 30 }, //Sivan
+ { 29, 29, 29 }, //Tammuz
+ { 30, 30, 30 }, //Av
+ { 29, 29, 29 }, //Elul
+};
+
+/**
+* The cumulative # of days to the end of each month in a non-leap year
+* Although this can be calculated from the MONTH_LENGTH table,
+* keeping it around separately makes some calculations a lot faster
+*/
+
+static const int16_t MONTH_START[][3] = {
+ // Deficient Normal Complete
+ { 0, 0, 0 }, // (placeholder)
+ { 30, 30, 30 }, // Tishri
+ { 59, 59, 60 }, // Heshvan
+ { 88, 89, 90 }, // Kislev
+ { 117, 118, 119 }, // Tevet
+ { 147, 148, 149 }, // Shevat
+ { 147, 148, 149 }, // (Adar I placeholder)
+ { 176, 177, 178 }, // Adar
+ { 206, 207, 208 }, // Nisan
+ { 235, 236, 237 }, // Iyar
+ { 265, 266, 267 }, // Sivan
+ { 294, 295, 296 }, // Tammuz
+ { 324, 325, 326 }, // Av
+ { 353, 354, 355 }, // Elul
+};
+
+/**
+* The cumulative # of days to the end of each month in a leap year
+*/
+static const int16_t LEAP_MONTH_START[][3] = {
+ // Deficient Normal Complete
+ { 0, 0, 0 }, // (placeholder)
+ { 30, 30, 30 }, // Tishri
+ { 59, 59, 60 }, // Heshvan
+ { 88, 89, 90 }, // Kislev
+ { 117, 118, 119 }, // Tevet
+ { 147, 148, 149 }, // Shevat
+ { 177, 178, 179 }, // Adar I
+ { 206, 207, 208 }, // Adar II
+ { 236, 237, 238 }, // Nisan
+ { 265, 266, 267 }, // Iyar
+ { 295, 296, 297 }, // Sivan
+ { 324, 325, 326 }, // Tammuz
+ { 354, 355, 356 }, // Av
+ { 383, 384, 385 }, // Elul
+};
+
+static icu::CalendarCache *gCache = nullptr;
+
+U_CDECL_BEGIN
+static UBool calendar_hebrew_cleanup() {
+ delete gCache;
+ gCache = nullptr;
+ return true;
+}
+U_CDECL_END
+
+U_NAMESPACE_BEGIN
+//-------------------------------------------------------------------------
+// Constructors...
+//-------------------------------------------------------------------------
+
+/**
+* Constructs a default <code>HebrewCalendar</code> using the current time
+* in the default time zone with the default locale.
+* @internal
+*/
+HebrewCalendar::HebrewCalendar(const Locale& aLocale, UErrorCode& success)
+: Calendar(TimeZone::forLocaleOrDefault(aLocale), aLocale, success)
+
+{
+ setTimeInMillis(getNow(), success); // Call this again now that the vtable is set up properly.
+}
+
+
+HebrewCalendar::~HebrewCalendar() {
+}
+
+const char *HebrewCalendar::getType() const {
+ return "hebrew";
+}
+
+HebrewCalendar* HebrewCalendar::clone() const {
+ return new HebrewCalendar(*this);
+}
+
+HebrewCalendar::HebrewCalendar(const HebrewCalendar& other) : Calendar(other) {
+}
+
+
+//-------------------------------------------------------------------------
+// Rolling and adding functions overridden from Calendar
+//
+// These methods call through to the default implementation in IBMCalendar
+// for most of the fields and only handle the unusual ones themselves.
+//-------------------------------------------------------------------------
+
+/**
+* Add a signed amount to a specified field, using this calendar's rules.
+* For example, to add three days to the current date, you can call
+* <code>add(Calendar.DATE, 3)</code>.
+* <p>
+* When adding to certain fields, the values of other fields may conflict and
+* need to be changed. For example, when adding one to the {@link #MONTH MONTH} field
+* for the date "30 Av 5758", the {@link #DAY_OF_MONTH DAY_OF_MONTH} field
+* must be adjusted so that the result is "29 Elul 5758" rather than the invalid
+* "30 Elul 5758".
+* <p>
+* This method is able to add to
+* all fields except for {@link #ERA ERA}, {@link #DST_OFFSET DST_OFFSET},
+* and {@link #ZONE_OFFSET ZONE_OFFSET}.
+* <p>
+* <b>Note:</b> You should always use {@link #roll roll} and add rather
+* than attempting to perform arithmetic operations directly on the fields
+* of a <tt>HebrewCalendar</tt>. Since the {@link #MONTH MONTH} field behaves
+* discontinuously in non-leap years, simple arithmetic can give invalid results.
+* <p>
+* @param field the time field.
+* @param amount the amount to add to the field.
+*
+* @exception IllegalArgumentException if the field is invalid or refers
+* to a field that cannot be handled by this method.
+* @internal
+*/
+void HebrewCalendar::add(UCalendarDateFields field, int32_t amount, UErrorCode& status)
+{
+ if(U_FAILURE(status)) {
+ return;
+ }
+ switch (field) {
+ case UCAL_MONTH:
+ case UCAL_ORDINAL_MONTH:
+ {
+ // We can't just do a set(MONTH, get(MONTH) + amount). The
+ // reason is ADAR_1. Suppose amount is +2 and we land in
+ // ADAR_1 -- then we have to bump to ADAR_2 aka ADAR. But
+ // if amount is -2 and we land in ADAR_1, then we have to
+ // bump the other way -- down to SHEVAT. - Alan 11/00
+ int32_t month = get(UCAL_MONTH, status);
+ int32_t year = get(UCAL_YEAR, status);
+ UBool acrossAdar1;
+ if (amount > 0) {
+ acrossAdar1 = (month < ADAR_1); // started before ADAR_1?
+ month += amount;
+ for (;;) {
+ if (acrossAdar1 && month>=ADAR_1 && !isLeapYear(year)) {
+ ++month;
+ }
+ if (month <= ELUL) {
+ break;
+ }
+ month -= ELUL+1;
+ ++year;
+ acrossAdar1 = true;
+ }
+ } else {
+ acrossAdar1 = (month > ADAR_1); // started after ADAR_1?
+ month += amount;
+ for (;;) {
+ if (acrossAdar1 && month<=ADAR_1 && !isLeapYear(year)) {
+ --month;
+ }
+ if (month >= 0) {
+ break;
+ }
+ month += ELUL+1;
+ --year;
+ acrossAdar1 = true;
+ }
+ }
+ set(UCAL_MONTH, month);
+ set(UCAL_YEAR, year);
+ pinField(UCAL_DAY_OF_MONTH, status);
+ break;
+ }
+
+ default:
+ Calendar::add(field, amount, status);
+ break;
+ }
+}
+
+/**
+* @deprecated ICU 2.6 use UCalendarDateFields instead of EDateFields
+*/
+void HebrewCalendar::add(EDateFields field, int32_t amount, UErrorCode& status)
+{
+ add((UCalendarDateFields)field, amount, status);
+}
+
+/**
+* Rolls (up/down) a specified amount time on the given field. For
+* example, to roll the current date up by three days, you can call
+* <code>roll(Calendar.DATE, 3)</code>. If the
+* field is rolled past its maximum allowable value, it will "wrap" back
+* to its minimum and continue rolling.
+* For example, calling <code>roll(Calendar.DATE, 10)</code>
+* on a Hebrew calendar set to "25 Av 5758" will result in the date "5 Av 5758".
+* <p>
+* When rolling certain fields, the values of other fields may conflict and
+* need to be changed. For example, when rolling the {@link #MONTH MONTH} field
+* upward by one for the date "30 Av 5758", the {@link #DAY_OF_MONTH DAY_OF_MONTH} field
+* must be adjusted so that the result is "29 Elul 5758" rather than the invalid
+* "30 Elul".
+* <p>
+* This method is able to roll
+* all fields except for {@link #ERA ERA}, {@link #DST_OFFSET DST_OFFSET},
+* and {@link #ZONE_OFFSET ZONE_OFFSET}. Subclasses may, of course, add support for
+* additional fields in their overrides of <code>roll</code>.
+* <p>
+* <b>Note:</b> You should always use roll and {@link #add add} rather
+* than attempting to perform arithmetic operations directly on the fields
+* of a <tt>HebrewCalendar</tt>. Since the {@link #MONTH MONTH} field behaves
+* discontinuously in non-leap years, simple arithmetic can give invalid results.
+* <p>
+* @param field the time field.
+* @param amount the amount by which the field should be rolled.
+*
+* @exception IllegalArgumentException if the field is invalid or refers
+* to a field that cannot be handled by this method.
+* @internal
+*/
+void HebrewCalendar::roll(UCalendarDateFields field, int32_t amount, UErrorCode& status)
+{
+ if(U_FAILURE(status)) {
+ return;
+ }
+ switch (field) {
+ case UCAL_MONTH:
+ case UCAL_ORDINAL_MONTH:
+ {
+ int32_t month = get(UCAL_MONTH, status);
+ int32_t year = get(UCAL_YEAR, status);
+
+ UBool leapYear = isLeapYear(year);
+ int32_t yearLength = monthsInYear(year);
+ int32_t newMonth = month + (amount % yearLength);
+ //
+ // If it's not a leap year and we're rolling past the missing month
+ // of ADAR_1, we need to roll an extra month to make up for it.
+ //
+ if (!leapYear) {
+ if (amount > 0 && month < ADAR_1 && newMonth >= ADAR_1) {
+ newMonth++;
+ } else if (amount < 0 && month > ADAR_1 && newMonth <= ADAR_1) {
+ newMonth--;
+ }
+ }
+ set(UCAL_MONTH, (newMonth + 13) % 13);
+ pinField(UCAL_DAY_OF_MONTH, status);
+ return;
+ }
+ default:
+ Calendar::roll(field, amount, status);
+ }
+}
+
+void HebrewCalendar::roll(EDateFields field, int32_t amount, UErrorCode& status) {
+ roll((UCalendarDateFields)field, amount, status);
+}
+
+//-------------------------------------------------------------------------
+// Support methods
+//-------------------------------------------------------------------------
+
+// Hebrew date calculations are performed in terms of days, hours, and
+// "parts" (or halakim), which are 1/1080 of an hour, or 3 1/3 seconds.
+static const int32_t HOUR_PARTS = 1080;
+static const int32_t DAY_PARTS = 24*HOUR_PARTS;
+
+// An approximate value for the length of a lunar month.
+// It is used to calculate the approximate year and month of a given
+// absolute date.
+static const int32_t MONTH_DAYS = 29;
+static const int32_t MONTH_FRACT = 12*HOUR_PARTS + 793;
+static const int32_t MONTH_PARTS = MONTH_DAYS*DAY_PARTS + MONTH_FRACT;
+
+// The time of the new moon (in parts) on 1 Tishri, year 1 (the epoch)
+// counting from noon on the day before. BAHARAD is an abbreviation of
+// Bet (Monday), Hey (5 hours from sunset), Resh-Daled (204).
+static const int32_t BAHARAD = 11*HOUR_PARTS + 204;
+
+/**
+* Finds the day # of the first day in the given Hebrew year.
+* To do this, we want to calculate the time of the Tishri 1 new moon
+* in that year.
+* <p>
+* The algorithm here is similar to ones described in a number of
+* references, including:
+* <ul>
+* <li>"Calendrical Calculations", by Nachum Dershowitz & Edward Reingold,
+* Cambridge University Press, 1997, pages 85-91.
+*
+* <li>Hebrew Calendar Science and Myths,
+* <a href="http://www.geocities.com/Athens/1584/">
+* http://www.geocities.com/Athens/1584/</a>
+*
+* <li>The Calendar FAQ,
+* <a href="http://www.faqs.org/faqs/calendars/faq/">
+* http://www.faqs.org/faqs/calendars/faq/</a>
+* </ul>
+*/
+int32_t HebrewCalendar::startOfYear(int32_t year, UErrorCode &status)
+{
+ ucln_i18n_registerCleanup(UCLN_I18N_HEBREW_CALENDAR, calendar_hebrew_cleanup);
+ int32_t day = CalendarCache::get(&gCache, year, status);
+
+ if (day == 0) {
+ // # of months before year
+ int32_t months = (int32_t)ClockMath::floorDivide((235 * (int64_t)year - 234), (int64_t)19);
+
+ int64_t frac = (int64_t)months * MONTH_FRACT + BAHARAD; // Fractional part of day #
+ day = months * 29 + (int32_t)(frac / DAY_PARTS); // Whole # part of calculation
+ frac = frac % DAY_PARTS; // Time of day
+
+ int32_t wd = (day % 7); // Day of week (0 == Monday)
+
+ if (wd == 2 || wd == 4 || wd == 6) {
+ // If the 1st is on Sun, Wed, or Fri, postpone to the next day
+ day += 1;
+ wd = (day % 7);
+ }
+ if (wd == 1 && frac > 15*HOUR_PARTS+204 && !isLeapYear(year) ) {
+ // If the new moon falls after 3:11:20am (15h204p from the previous noon)
+ // on a Tuesday and it is not a leap year, postpone by 2 days.
+ // This prevents 356-day years.
+ day += 2;
+ }
+ else if (wd == 0 && frac > 21*HOUR_PARTS+589 && isLeapYear(year-1) ) {
+ // If the new moon falls after 9:32:43 1/3am (21h589p from yesterday noon)
+ // on a Monday and *last* year was a leap year, postpone by 1 day.
+ // Prevents 382-day years.
+ day += 1;
+ }
+ CalendarCache::put(&gCache, year, day, status);
+ }
+ return day;
+}
+
+/**
+* Find the day of the week for a given day
+*
+* @param day The # of days since the start of the Hebrew calendar,
+* 1-based (i.e. 1/1/1 AM is day 1).
+*/
+int32_t HebrewCalendar::absoluteDayToDayOfWeek(int32_t day)
+{
+ // We know that 1/1/1 AM is a Monday, which makes the math easy...
+ return (day % 7) + 1;
+}
+
+/**
+* Returns the the type of a given year.
+* 0 "Deficient" year with 353 or 383 days
+* 1 "Normal" year with 354 or 384 days
+* 2 "Complete" year with 355 or 385 days
+*/
+int32_t HebrewCalendar::yearType(int32_t year) const
+{
+ int32_t yearLength = handleGetYearLength(year);
+
+ if (yearLength > 380) {
+ yearLength -= 30; // Subtract length of leap month.
+ }
+
+ int type = 0;
+
+ switch (yearLength) {
+ case 353:
+ type = 0; break;
+ case 354:
+ type = 1; break;
+ case 355:
+ type = 2; break;
+ default:
+ //throw new RuntimeException("Illegal year length " + yearLength + " in year " + year);
+ type = 1;
+ }
+ return type;
+}
+
+/**
+* Determine whether a given Hebrew year is a leap year
+*
+* The rule here is that if (year % 19) == 0, 3, 6, 8, 11, 14, or 17.
+* The formula below performs the same test, believe it or not.
+*/
+UBool HebrewCalendar::isLeapYear(int32_t year) {
+ //return (year * 12 + 17) % 19 >= 12;
+ int32_t x = (year*12 + 17) % 19;
+ return x >= ((x < 0) ? -7 : 12);
+}
+
+int32_t HebrewCalendar::monthsInYear(int32_t year) {
+ return isLeapYear(year) ? 13 : 12;
+}
+
+//-------------------------------------------------------------------------
+// Calendar framework
+//-------------------------------------------------------------------------
+
+/**
+* @internal
+*/
+int32_t HebrewCalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const {
+ return LIMITS[field][limitType];
+}
+
+/**
+* Returns the length of the given month in the given year
+* @internal
+*/
+int32_t HebrewCalendar::handleGetMonthLength(int32_t extendedYear, int32_t month) const {
+ // Resolve out-of-range months. This is necessary in order to
+ // obtain the correct year. We correct to
+ // a 12- or 13-month year (add/subtract 12 or 13, depending
+ // on the year) but since we _always_ number from 0..12, and
+ // the leap year determines whether or not month 5 (Adar 1)
+ // is present, we allow 0..12 in any given year.
+ while (month < 0) {
+ month += monthsInYear(--extendedYear);
+ }
+ // Careful: allow 0..12 in all years
+ while (month > 12) {
+ month -= monthsInYear(extendedYear++);
+ }
+
+ switch (month) {
+ case HESHVAN:
+ case KISLEV:
+ // These two month lengths can vary
+ return MONTH_LENGTH[month][yearType(extendedYear)];
+
+ default:
+ // The rest are a fixed length
+ return MONTH_LENGTH[month][0];
+ }
+}
+
+/**
+* Returns the number of days in the given Hebrew year
+* @internal
+*/
+int32_t HebrewCalendar::handleGetYearLength(int32_t eyear) const {
+ UErrorCode status = U_ZERO_ERROR;
+ return startOfYear(eyear+1, status) - startOfYear(eyear, status);
+}
+
+void HebrewCalendar::validateField(UCalendarDateFields field, UErrorCode &status) {
+ if ((field == UCAL_MONTH || field == UCAL_ORDINAL_MONTH)
+ && !isLeapYear(handleGetExtendedYear()) && internalGetMonth() == ADAR_1) {
+ status = U_ILLEGAL_ARGUMENT_ERROR;
+ return;
+ }
+ Calendar::validateField(field, status);
+}
+//-------------------------------------------------------------------------
+// Functions for converting from milliseconds to field values
+//-------------------------------------------------------------------------
+
+/**
+* Subclasses may override this method to compute several fields
+* specific to each calendar system. These are:
+*
+* <ul><li>ERA
+* <li>YEAR
+* <li>MONTH
+* <li>DAY_OF_MONTH
+* <li>DAY_OF_YEAR
+* <li>EXTENDED_YEAR</ul>
+*
+* Subclasses can refer to the DAY_OF_WEEK and DOW_LOCAL fields,
+* which will be set when this method is called. Subclasses can
+* also call the getGregorianXxx() methods to obtain Gregorian
+* calendar equivalents for the given Julian day.
+*
+* <p>In addition, subclasses should compute any subclass-specific
+* fields, that is, fields from BASE_FIELD_COUNT to
+* getFieldCount() - 1.
+* @internal
+*/
+void HebrewCalendar::handleComputeFields(int32_t julianDay, UErrorCode &status) {
+ int32_t d = julianDay - 347997;
+ double m = ClockMath::floorDivide((d * (double)DAY_PARTS), (double) MONTH_PARTS); // Months (approx)
+ int32_t year = (int32_t)(ClockMath::floorDivide((19. * m + 234.), 235.) + 1.); // Years (approx)
+ int32_t ys = startOfYear(year, status); // 1st day of year
+ int32_t dayOfYear = (d - ys);
+
+ // Because of the postponement rules, it's possible to guess wrong. Fix it.
+ while (dayOfYear < 1) {
+ year--;
+ ys = startOfYear(year, status);
+ dayOfYear = (d - ys);
+ }
+
+ // Now figure out which month we're in, and the date within that month
+ int32_t type = yearType(year);
+ UBool isLeap = isLeapYear(year);
+
+ int32_t month = 0;
+ int32_t momax = UPRV_LENGTHOF(MONTH_START);
+ while (month < momax && dayOfYear > ( isLeap ? LEAP_MONTH_START[month][type] : MONTH_START[month][type] ) ) {
+ month++;
+ }
+ if (month >= momax || month<=0) {
+ // TODO: I found dayOfYear could be out of range when
+ // a large value is set to julianDay. I patched startOfYear
+ // to reduce the chace, but it could be still reproduced either
+ // by startOfYear or other places. For now, we check
+ // the month is in valid range to avoid out of array index
+ // access problem here. However, we need to carefully review
+ // the calendar implementation to check the extreme limit of
+ // each calendar field and the code works well for any values
+ // in the valid value range. -yoshito
+ status = U_ILLEGAL_ARGUMENT_ERROR;
+ return;
+ }
+ month--;
+ int dayOfMonth = dayOfYear - (isLeap ? LEAP_MONTH_START[month][type] : MONTH_START[month][type]);
+
+ internalSet(UCAL_ERA, 0);
+ internalSet(UCAL_YEAR, year);
+ internalSet(UCAL_EXTENDED_YEAR, year);
+ int32_t ordinal_month = month;
+ if (!isLeap && ordinal_month > ADAR_1) {
+ ordinal_month--;
+ }
+ internalSet(UCAL_ORDINAL_MONTH, ordinal_month);
+ internalSet(UCAL_MONTH, month);
+ internalSet(UCAL_DAY_OF_MONTH, dayOfMonth);
+ internalSet(UCAL_DAY_OF_YEAR, dayOfYear);
+}
+
+//-------------------------------------------------------------------------
+// Functions for converting from field values to milliseconds
+//-------------------------------------------------------------------------
+
+/**
+* @internal
+*/
+int32_t HebrewCalendar::handleGetExtendedYear() {
+ int32_t year;
+ if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
+ year = internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1
+ } else {
+ year = internalGet(UCAL_YEAR, 1); // Default to year 1
+ }
+ return year;
+}
+
+/**
+* Return JD of start of given month/year.
+* @internal
+*/
+int32_t HebrewCalendar::handleComputeMonthStart(int32_t eyear, int32_t month, UBool /*useMonth*/) const {
+ UErrorCode status = U_ZERO_ERROR;
+ // Resolve out-of-range months. This is necessary in order to
+ // obtain the correct year. We correct to
+ // a 12- or 13-month year (add/subtract 12 or 13, depending
+ // on the year) but since we _always_ number from 0..12, and
+ // the leap year determines whether or not month 5 (Adar 1)
+ // is present, we allow 0..12 in any given year.
+ while (month < 0) {
+ month += monthsInYear(--eyear);
+ }
+ // Careful: allow 0..12 in all years
+ while (month > 12) {
+ month -= monthsInYear(eyear++);
+ }
+
+ int32_t day = startOfYear(eyear, status);
+
+ if(U_FAILURE(status)) {
+ return 0;
+ }
+
+ if (month != 0) {
+ if (isLeapYear(eyear)) {
+ day += LEAP_MONTH_START[month][yearType(eyear)];
+ } else {
+ day += MONTH_START[month][yearType(eyear)];
+ }
+ }
+
+ return (int) (day + 347997);
+}
+
+constexpr uint32_t kHebrewRelatedYearDiff = -3760;
+
+int32_t HebrewCalendar::getRelatedYear(UErrorCode &status) const
+{
+ int32_t year = get(UCAL_EXTENDED_YEAR, status);
+ if (U_FAILURE(status)) {
+ return 0;
+ }
+ return year + kHebrewRelatedYearDiff;
+}
+
+void HebrewCalendar::setRelatedYear(int32_t year)
+{
+ // set extended year
+ set(UCAL_EXTENDED_YEAR, year - kHebrewRelatedYearDiff);
+}
+
+/**
+ * The system maintains a static default century start date and Year. They are
+ * initialized the first time they are used. Once the system default century date
+ * and year are set, they do not change.
+ */
+static UDate gSystemDefaultCenturyStart = DBL_MIN;
+static int32_t gSystemDefaultCenturyStartYear = -1;
+static icu::UInitOnce gSystemDefaultCenturyInit {};
+
+UBool HebrewCalendar::haveDefaultCentury() const
+{
+ return true;
+}
+
+static void U_CALLCONV initializeSystemDefaultCentury()
+{
+ // initialize systemDefaultCentury and systemDefaultCenturyYear based
+ // on the current time. They'll be set to 80 years before
+ // the current time.
+ UErrorCode status = U_ZERO_ERROR;
+ HebrewCalendar calendar(Locale("@calendar=hebrew"),status);
+ if (U_SUCCESS(status)) {
+ calendar.setTime(Calendar::getNow(), status);
+ calendar.add(UCAL_YEAR, -80, status);
+
+ gSystemDefaultCenturyStart = calendar.getTime(status);
+ gSystemDefaultCenturyStartYear = calendar.get(UCAL_YEAR, status);
+ }
+ // We have no recourse upon failure unless we want to propagate the failure
+ // out.
+}
+
+
+UDate HebrewCalendar::defaultCenturyStart() const {
+ // lazy-evaluate systemDefaultCenturyStart
+ umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
+ return gSystemDefaultCenturyStart;
+}
+
+int32_t HebrewCalendar::defaultCenturyStartYear() const {
+ // lazy-evaluate systemDefaultCenturyStartYear
+ umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
+ return gSystemDefaultCenturyStartYear;
+}
+
+bool HebrewCalendar::inTemporalLeapYear(UErrorCode& status) const {
+ if (U_FAILURE(status)) return false;
+ int32_t eyear = get(UCAL_EXTENDED_YEAR, status);
+ if (U_FAILURE(status)) return false;
+ return isLeapYear(eyear);
+}
+
+static const char * const gTemporalMonthCodesForHebrew[] = {
+ "M01", "M02", "M03", "M04", "M05", "M05L", "M06",
+ "M07", "M08", "M09", "M10", "M11", "M12", nullptr
+};
+
+const char* HebrewCalendar::getTemporalMonthCode(UErrorCode& status) const {
+ int32_t month = get(UCAL_MONTH, status);
+ if (U_FAILURE(status)) return nullptr;
+ return gTemporalMonthCodesForHebrew[month];
+}
+
+void HebrewCalendar::setTemporalMonthCode(const char* code, UErrorCode& status )
+{
+ if (U_FAILURE(status)) return;
+ int32_t len = static_cast<int32_t>(uprv_strlen(code));
+ if (len == 3 || len == 4) {
+ for (int m = 0; gTemporalMonthCodesForHebrew[m] != nullptr; m++) {
+ if (uprv_strcmp(code, gTemporalMonthCodesForHebrew[m]) == 0) {
+ set(UCAL_MONTH, m);
+ return;
+ }
+ }
+ }
+ status = U_ILLEGAL_ARGUMENT_ERROR;
+}
+
+int32_t HebrewCalendar::internalGetMonth() const {
+ if (resolveFields(kMonthPrecedence) == UCAL_ORDINAL_MONTH) {
+ int32_t ordinalMonth = internalGet(UCAL_ORDINAL_MONTH);
+ HebrewCalendar *nonConstThis = (HebrewCalendar*)this; // cast away const
+
+ int32_t year = nonConstThis->handleGetExtendedYear();
+ return ordinalMonth + ((isLeapYear(year) && (ordinalMonth > ADAR_1)) ? 1: 0);
+ }
+ return Calendar::internalGetMonth();
+}
+
+UOBJECT_DEFINE_RTTI_IMPLEMENTATION(HebrewCalendar)
+
+U_NAMESPACE_END
+
+#endif // UCONFIG_NO_FORMATTING
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 10:47:06 +0000