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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 "umutex.h"
-#include <float.h>
-#include "gregoimp.h" // Math
-#include "astro.h" // CalendarAstronomer
-#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
-};
-
-/**
-* 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 = NULL;
-
-U_CDECL_BEGIN
-static UBool calendar_hebrew_cleanup(void) {
- delete gCache;
- gCache = NULL;
- 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::createDefault(), 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";
-}
-
-Calendar* 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:
- {
- // 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:
- {
- 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) {
- int32_t months = (235 * year - 234) / 19; // # of months before year
-
- 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 && !isLeapYear(handleGetExtendedYear()) && internalGet(UCAL_MONTH) == 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 = ((d * (double)DAY_PARTS)/ (double) MONTH_PARTS); // Months (approx)
- int32_t year = (int32_t)( ((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);
- 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);
-}
-
-UBool
-HebrewCalendar::inDaylightTime(UErrorCode& status) const
-{
- // copied from GregorianCalendar
- if (U_FAILURE(status) || !getTimeZone().useDaylightTime())
- return FALSE;
-
- // Force an update of the state of the Calendar.
- ((HebrewCalendar*)this)->complete(status); // cast away const
-
- return (UBool)(U_SUCCESS(status) ? (internalGet(UCAL_DST_OFFSET) != 0) : FALSE);
-}
-
-/**
- * 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 = U_INITONCE_INITIALIZER;
-
-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;
-}
-
-
-UOBJECT_DEFINE_RTTI_IMPLEMENTATION(HebrewCalendar)
-
-U_NAMESPACE_END
-
-#endif // UCONFIG_NO_FORMATTING