| /* |
| * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * Copyright (c) 2012, Stephen Colebourne & Michael Nascimento Santos |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * * Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * |
| * * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * * Neither the name of JSR-310 nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| package java.time.chrono; |
| |
| import static java.time.temporal.ChronoField.ALIGNED_DAY_OF_WEEK_IN_MONTH; |
| import static java.time.temporal.ChronoField.ALIGNED_DAY_OF_WEEK_IN_YEAR; |
| import static java.time.temporal.ChronoField.ALIGNED_WEEK_OF_MONTH; |
| import static java.time.temporal.ChronoField.ALIGNED_WEEK_OF_YEAR; |
| import static java.time.temporal.ChronoField.DAY_OF_MONTH; |
| import static java.time.temporal.ChronoField.MONTH_OF_YEAR; |
| import static java.time.temporal.ChronoField.YEAR; |
| |
| import java.io.IOException; |
| import java.io.InvalidObjectException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| import java.io.Serializable; |
| import java.time.Clock; |
| import java.time.DateTimeException; |
| import java.time.LocalDate; |
| import java.time.LocalTime; |
| import java.time.ZoneId; |
| import java.time.temporal.ChronoField; |
| import java.time.temporal.TemporalAccessor; |
| import java.time.temporal.TemporalAdjuster; |
| import java.time.temporal.TemporalAmount; |
| import java.time.temporal.TemporalField; |
| import java.time.temporal.TemporalQuery; |
| import java.time.temporal.TemporalUnit; |
| import java.time.temporal.UnsupportedTemporalTypeException; |
| import java.time.temporal.ValueRange; |
| |
| /** |
| * A date in the Hijrah calendar system. |
| * <p> |
| * This date operates using one of several variants of the |
| * {@linkplain HijrahChronology Hijrah calendar}. |
| * <p> |
| * The Hijrah calendar has a different total of days in a year than |
| * Gregorian calendar, and the length of each month is based on the period |
| * of a complete revolution of the moon around the earth |
| * (as between successive new moons). |
| * Refer to the {@link HijrahChronology} for details of supported variants. |
| * <p> |
| * Each HijrahDate is created bound to a particular HijrahChronology, |
| * The same chronology is propagated to each HijrahDate computed from the date. |
| * To use a different Hijrah variant, its HijrahChronology can be used |
| * to create new HijrahDate instances. |
| * Alternatively, the {@link #withVariant} method can be used to convert |
| * to a new HijrahChronology. |
| * @implSpec |
| * This class is immutable and thread-safe. |
| * |
| * @since 1.8 |
| */ |
| public final class HijrahDate |
| extends ChronoLocalDateImpl<HijrahDate> |
| implements ChronoLocalDate, Serializable { |
| |
| /** |
| * Serialization version. |
| */ |
| private static final long serialVersionUID = -5207853542612002020L; |
| /** |
| * The Chronology of this HijrahDate. |
| */ |
| private final transient HijrahChronology chrono; |
| /** |
| * The proleptic year. |
| */ |
| private final transient int prolepticYear; |
| /** |
| * The month-of-year. |
| */ |
| private final transient int monthOfYear; |
| /** |
| * The day-of-month. |
| */ |
| private final transient int dayOfMonth; |
| |
| //------------------------------------------------------------------------- |
| /** |
| * Obtains an instance of {@code HijrahDate} from the Hijrah proleptic year, |
| * month-of-year and day-of-month. |
| * |
| * @param prolepticYear the proleptic year to represent in the Hijrah calendar |
| * @param monthOfYear the month-of-year to represent, from 1 to 12 |
| * @param dayOfMonth the day-of-month to represent, from 1 to 30 |
| * @return the Hijrah date, never null |
| * @throws DateTimeException if the value of any field is out of range |
| */ |
| static HijrahDate of(HijrahChronology chrono, int prolepticYear, int monthOfYear, int dayOfMonth) { |
| return new HijrahDate(chrono, prolepticYear, monthOfYear, dayOfMonth); |
| } |
| |
| /** |
| * Returns a HijrahDate for the chronology and epochDay. |
| * @param chrono The Hijrah chronology |
| * @param epochDay the epoch day |
| * @return a HijrahDate for the epoch day; non-null |
| */ |
| static HijrahDate ofEpochDay(HijrahChronology chrono, long epochDay) { |
| return new HijrahDate(chrono, epochDay); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Obtains the current {@code HijrahDate} of the Islamic Umm Al-Qura calendar |
| * in the default time-zone. |
| * <p> |
| * This will query the {@link Clock#systemDefaultZone() system clock} in the default |
| * time-zone to obtain the current date. |
| * <p> |
| * Using this method will prevent the ability to use an alternate clock for testing |
| * because the clock is hard-coded. |
| * |
| * @return the current date using the system clock and default time-zone, not null |
| */ |
| public static HijrahDate now() { |
| return now(Clock.systemDefaultZone()); |
| } |
| |
| /** |
| * Obtains the current {@code HijrahDate} of the Islamic Umm Al-Qura calendar |
| * in the specified time-zone. |
| * <p> |
| * This will query the {@link Clock#system(ZoneId) system clock} to obtain the current date. |
| * Specifying the time-zone avoids dependence on the default time-zone. |
| * <p> |
| * Using this method will prevent the ability to use an alternate clock for testing |
| * because the clock is hard-coded. |
| * |
| * @param zone the zone ID to use, not null |
| * @return the current date using the system clock, not null |
| */ |
| public static HijrahDate now(ZoneId zone) { |
| return now(Clock.system(zone)); |
| } |
| |
| /** |
| * Obtains the current {@code HijrahDate} of the Islamic Umm Al-Qura calendar |
| * from the specified clock. |
| * <p> |
| * This will query the specified clock to obtain the current date - today. |
| * Using this method allows the use of an alternate clock for testing. |
| * The alternate clock may be introduced using {@linkplain Clock dependency injection}. |
| * |
| * @param clock the clock to use, not null |
| * @return the current date, not null |
| * @throws DateTimeException if the current date cannot be obtained |
| */ |
| public static HijrahDate now(Clock clock) { |
| return HijrahDate.ofEpochDay(HijrahChronology.INSTANCE, LocalDate.now(clock).toEpochDay()); |
| } |
| |
| /** |
| * Obtains a {@code HijrahDate} of the Islamic Umm Al-Qura calendar |
| * from the proleptic-year, month-of-year and day-of-month fields. |
| * <p> |
| * This returns a {@code HijrahDate} with the specified fields. |
| * The day must be valid for the year and month, otherwise an exception will be thrown. |
| * |
| * @param prolepticYear the Hijrah proleptic-year |
| * @param month the Hijrah month-of-year, from 1 to 12 |
| * @param dayOfMonth the Hijrah day-of-month, from 1 to 30 |
| * @return the date in Hijrah calendar system, not null |
| * @throws DateTimeException if the value of any field is out of range, |
| * or if the day-of-month is invalid for the month-year |
| */ |
| public static HijrahDate of(int prolepticYear, int month, int dayOfMonth) { |
| return HijrahChronology.INSTANCE.date(prolepticYear, month, dayOfMonth); |
| } |
| |
| /** |
| * Obtains a {@code HijrahDate} of the Islamic Umm Al-Qura calendar from a temporal object. |
| * <p> |
| * This obtains a date in the Hijrah calendar system based on the specified temporal. |
| * A {@code TemporalAccessor} represents an arbitrary set of date and time information, |
| * which this factory converts to an instance of {@code HijrahDate}. |
| * <p> |
| * The conversion typically uses the {@link ChronoField#EPOCH_DAY EPOCH_DAY} |
| * field, which is standardized across calendar systems. |
| * <p> |
| * This method matches the signature of the functional interface {@link TemporalQuery} |
| * allowing it to be used as a query via method reference, {@code HijrahDate::from}. |
| * |
| * @param temporal the temporal object to convert, not null |
| * @return the date in Hijrah calendar system, not null |
| * @throws DateTimeException if unable to convert to a {@code HijrahDate} |
| */ |
| public static HijrahDate from(TemporalAccessor temporal) { |
| return HijrahChronology.INSTANCE.date(temporal); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Constructs an {@code HijrahDate} with the proleptic-year, month-of-year and |
| * day-of-month fields. |
| * |
| * @param chrono The chronology to create the date with |
| * @param prolepticYear the proleptic year |
| * @param monthOfYear the month of year |
| * @param dayOfMonth the day of month |
| */ |
| private HijrahDate(HijrahChronology chrono, int prolepticYear, int monthOfYear, int dayOfMonth) { |
| // Computing the Gregorian day checks the valid ranges |
| chrono.getEpochDay(prolepticYear, monthOfYear, dayOfMonth); |
| |
| this.chrono = chrono; |
| this.prolepticYear = prolepticYear; |
| this.monthOfYear = monthOfYear; |
| this.dayOfMonth = dayOfMonth; |
| } |
| |
| /** |
| * Constructs an instance with the Epoch Day. |
| * |
| * @param epochDay the epochDay |
| */ |
| private HijrahDate(HijrahChronology chrono, long epochDay) { |
| int[] dateInfo = chrono.getHijrahDateInfo((int)epochDay); |
| |
| this.chrono = chrono; |
| this.prolepticYear = dateInfo[0]; |
| this.monthOfYear = dateInfo[1]; |
| this.dayOfMonth = dateInfo[2]; |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Gets the chronology of this date, which is the Hijrah calendar system. |
| * <p> |
| * The {@code Chronology} represents the calendar system in use. |
| * The era and other fields in {@link ChronoField} are defined by the chronology. |
| * |
| * @return the Hijrah chronology, not null |
| */ |
| @Override |
| public HijrahChronology getChronology() { |
| return chrono; |
| } |
| |
| /** |
| * Gets the era applicable at this date. |
| * <p> |
| * The Hijrah calendar system has one era, 'AH', |
| * defined by {@link HijrahEra}. |
| * |
| * @return the era applicable at this date, not null |
| */ |
| @Override |
| public HijrahEra getEra() { |
| return HijrahEra.AH; |
| } |
| |
| /** |
| * Returns the length of the month represented by this date. |
| * <p> |
| * This returns the length of the month in days. |
| * Month lengths in the Hijrah calendar system vary between 29 and 30 days. |
| * |
| * @return the length of the month in days |
| */ |
| @Override |
| public int lengthOfMonth() { |
| return chrono.getMonthLength(prolepticYear, monthOfYear); |
| } |
| |
| /** |
| * Returns the length of the year represented by this date. |
| * <p> |
| * This returns the length of the year in days. |
| * A Hijrah calendar system year is typically shorter than |
| * that of the ISO calendar system. |
| * |
| * @return the length of the year in days |
| */ |
| @Override |
| public int lengthOfYear() { |
| return chrono.getYearLength(prolepticYear); |
| } |
| |
| //----------------------------------------------------------------------- |
| @Override |
| public ValueRange range(TemporalField field) { |
| if (field instanceof ChronoField) { |
| if (isSupported(field)) { |
| ChronoField f = (ChronoField) field; |
| switch (f) { |
| case DAY_OF_MONTH: return ValueRange.of(1, lengthOfMonth()); |
| case DAY_OF_YEAR: return ValueRange.of(1, lengthOfYear()); |
| case ALIGNED_WEEK_OF_MONTH: return ValueRange.of(1, 5); // TODO |
| // TODO does the limited range of valid years cause years to |
| // start/end part way through? that would affect range |
| } |
| return getChronology().range(f); |
| } |
| throw new UnsupportedTemporalTypeException("Unsupported field: " + field); |
| } |
| return field.rangeRefinedBy(this); |
| } |
| |
| @Override |
| public long getLong(TemporalField field) { |
| if (field instanceof ChronoField) { |
| switch ((ChronoField) field) { |
| case DAY_OF_WEEK: return getDayOfWeek(); |
| case ALIGNED_DAY_OF_WEEK_IN_MONTH: return ((getDayOfWeek() - 1) % 7) + 1; |
| case ALIGNED_DAY_OF_WEEK_IN_YEAR: return ((getDayOfYear() - 1) % 7) + 1; |
| case DAY_OF_MONTH: return this.dayOfMonth; |
| case DAY_OF_YEAR: return this.getDayOfYear(); |
| case EPOCH_DAY: return toEpochDay(); |
| case ALIGNED_WEEK_OF_MONTH: return ((dayOfMonth - 1) / 7) + 1; |
| case ALIGNED_WEEK_OF_YEAR: return ((getDayOfYear() - 1) / 7) + 1; |
| case MONTH_OF_YEAR: return monthOfYear; |
| case PROLEPTIC_MONTH: return getProlepticMonth(); |
| case YEAR_OF_ERA: return prolepticYear; |
| case YEAR: return prolepticYear; |
| case ERA: return getEraValue(); |
| } |
| throw new UnsupportedTemporalTypeException("Unsupported field: " + field); |
| } |
| return field.getFrom(this); |
| } |
| |
| private long getProlepticMonth() { |
| return prolepticYear * 12L + monthOfYear - 1; |
| } |
| |
| @Override |
| public HijrahDate with(TemporalField field, long newValue) { |
| if (field instanceof ChronoField) { |
| ChronoField f = (ChronoField) field; |
| // not using checkValidIntValue so EPOCH_DAY and PROLEPTIC_MONTH work |
| chrono.range(f).checkValidValue(newValue, f); // TODO: validate value |
| int nvalue = (int) newValue; |
| switch (f) { |
| case DAY_OF_WEEK: return plusDays(newValue - getDayOfWeek()); |
| case ALIGNED_DAY_OF_WEEK_IN_MONTH: return plusDays(newValue - getLong(ALIGNED_DAY_OF_WEEK_IN_MONTH)); |
| case ALIGNED_DAY_OF_WEEK_IN_YEAR: return plusDays(newValue - getLong(ALIGNED_DAY_OF_WEEK_IN_YEAR)); |
| case DAY_OF_MONTH: return resolvePreviousValid(prolepticYear, monthOfYear, nvalue); |
| case DAY_OF_YEAR: return plusDays(Math.min(nvalue, lengthOfYear()) - getDayOfYear()); |
| case EPOCH_DAY: return new HijrahDate(chrono, newValue); |
| case ALIGNED_WEEK_OF_MONTH: return plusDays((newValue - getLong(ALIGNED_WEEK_OF_MONTH)) * 7); |
| case ALIGNED_WEEK_OF_YEAR: return plusDays((newValue - getLong(ALIGNED_WEEK_OF_YEAR)) * 7); |
| case MONTH_OF_YEAR: return resolvePreviousValid(prolepticYear, nvalue, dayOfMonth); |
| case PROLEPTIC_MONTH: return plusMonths(newValue - getProlepticMonth()); |
| case YEAR_OF_ERA: return resolvePreviousValid(prolepticYear >= 1 ? nvalue : 1 - nvalue, monthOfYear, dayOfMonth); |
| case YEAR: return resolvePreviousValid(nvalue, monthOfYear, dayOfMonth); |
| case ERA: return resolvePreviousValid(1 - prolepticYear, monthOfYear, dayOfMonth); |
| } |
| throw new UnsupportedTemporalTypeException("Unsupported field: " + field); |
| } |
| return super.with(field, newValue); |
| } |
| |
| private HijrahDate resolvePreviousValid(int prolepticYear, int month, int day) { |
| int monthDays = chrono.getMonthLength(prolepticYear, month); |
| if (day > monthDays) { |
| day = monthDays; |
| } |
| return HijrahDate.of(chrono, prolepticYear, month, day); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @throws DateTimeException if unable to make the adjustment. |
| * For example, if the adjuster requires an ISO chronology |
| * @throws ArithmeticException {@inheritDoc} |
| */ |
| @Override |
| public HijrahDate with(TemporalAdjuster adjuster) { |
| return super.with(adjuster); |
| } |
| |
| /** |
| * Returns a {@code HijrahDate} with the Chronology requested. |
| * <p> |
| * The year, month, and day are checked against the new requested |
| * HijrahChronology. If the chronology has a shorter month length |
| * for the month, the day is reduced to be the last day of the month. |
| * |
| * @param chronology the new HijrahChonology, non-null |
| * @return a HijrahDate with the requested HijrahChronology, non-null |
| */ |
| public HijrahDate withVariant(HijrahChronology chronology) { |
| if (chrono == chronology) { |
| return this; |
| } |
| // Like resolvePreviousValid the day is constrained to stay in the same month |
| int monthDays = chronology.getDayOfYear(prolepticYear, monthOfYear); |
| return HijrahDate.of(chronology, prolepticYear, monthOfYear,(dayOfMonth > monthDays) ? monthDays : dayOfMonth ); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @throws DateTimeException {@inheritDoc} |
| * @throws ArithmeticException {@inheritDoc} |
| */ |
| @Override |
| public HijrahDate plus(TemporalAmount amount) { |
| return super.plus(amount); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @throws DateTimeException {@inheritDoc} |
| * @throws ArithmeticException {@inheritDoc} |
| */ |
| @Override |
| public HijrahDate minus(TemporalAmount amount) { |
| return super.minus(amount); |
| } |
| |
| @Override |
| public long toEpochDay() { |
| return chrono.getEpochDay(prolepticYear, monthOfYear, dayOfMonth); |
| } |
| |
| /** |
| * Gets the day-of-year field. |
| * <p> |
| * This method returns the primitive {@code int} value for the day-of-year. |
| * |
| * @return the day-of-year |
| */ |
| private int getDayOfYear() { |
| return chrono.getDayOfYear(prolepticYear, monthOfYear) + dayOfMonth; |
| } |
| |
| /** |
| * Gets the day-of-week value. |
| * |
| * @return the day-of-week; computed from the epochday |
| */ |
| private int getDayOfWeek() { |
| int dow0 = (int)Math.floorMod(toEpochDay() + 3, 7); |
| return dow0 + 1; |
| } |
| |
| /** |
| * Gets the Era of this date. |
| * |
| * @return the Era of this date; computed from epochDay |
| */ |
| private int getEraValue() { |
| return (prolepticYear > 1 ? 1 : 0); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Checks if the year is a leap year, according to the Hijrah calendar system rules. |
| * |
| * @return true if this date is in a leap year |
| */ |
| @Override |
| public boolean isLeapYear() { |
| return chrono.isLeapYear(prolepticYear); |
| } |
| |
| //----------------------------------------------------------------------- |
| @Override |
| HijrahDate plusYears(long years) { |
| if (years == 0) { |
| return this; |
| } |
| int newYear = Math.addExact(this.prolepticYear, (int)years); |
| return resolvePreviousValid(newYear, monthOfYear, dayOfMonth); |
| } |
| |
| @Override |
| HijrahDate plusMonths(long monthsToAdd) { |
| if (monthsToAdd == 0) { |
| return this; |
| } |
| long monthCount = prolepticYear * 12L + (monthOfYear - 1); |
| long calcMonths = monthCount + monthsToAdd; // safe overflow |
| int newYear = chrono.checkValidYear(Math.floorDiv(calcMonths, 12L)); |
| int newMonth = (int)Math.floorMod(calcMonths, 12L) + 1; |
| return resolvePreviousValid(newYear, newMonth, dayOfMonth); |
| } |
| |
| @Override |
| HijrahDate plusWeeks(long weeksToAdd) { |
| return super.plusWeeks(weeksToAdd); |
| } |
| |
| @Override |
| HijrahDate plusDays(long days) { |
| return new HijrahDate(chrono, toEpochDay() + days); |
| } |
| |
| @Override |
| public HijrahDate plus(long amountToAdd, TemporalUnit unit) { |
| return super.plus(amountToAdd, unit); |
| } |
| |
| @Override |
| public HijrahDate minus(long amountToSubtract, TemporalUnit unit) { |
| return super.minus(amountToSubtract, unit); |
| } |
| |
| @Override |
| HijrahDate minusYears(long yearsToSubtract) { |
| return super.minusYears(yearsToSubtract); |
| } |
| |
| @Override |
| HijrahDate minusMonths(long monthsToSubtract) { |
| return super.minusMonths(monthsToSubtract); |
| } |
| |
| @Override |
| HijrahDate minusWeeks(long weeksToSubtract) { |
| return super.minusWeeks(weeksToSubtract); |
| } |
| |
| @Override |
| HijrahDate minusDays(long daysToSubtract) { |
| return super.minusDays(daysToSubtract); |
| } |
| |
| @Override // for javadoc and covariant return type |
| @SuppressWarnings("unchecked") |
| public final ChronoLocalDateTime<HijrahDate> atTime(LocalTime localTime) { |
| return (ChronoLocalDateTime<HijrahDate>)super.atTime(localTime); |
| } |
| |
| @Override |
| public ChronoPeriod until(ChronoLocalDate endDate) { |
| // TODO: untested |
| HijrahDate end = getChronology().date(endDate); |
| long totalMonths = (end.prolepticYear - this.prolepticYear) * 12 + (end.monthOfYear - this.monthOfYear); // safe |
| int days = end.dayOfMonth - this.dayOfMonth; |
| if (totalMonths > 0 && days < 0) { |
| totalMonths--; |
| HijrahDate calcDate = this.plusMonths(totalMonths); |
| days = (int) (end.toEpochDay() - calcDate.toEpochDay()); // safe |
| } else if (totalMonths < 0 && days > 0) { |
| totalMonths++; |
| days -= end.lengthOfMonth(); |
| } |
| long years = totalMonths / 12; // safe |
| int months = (int) (totalMonths % 12); // safe |
| return getChronology().period(Math.toIntExact(years), months, days); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Defend against malicious streams. |
| * @return never |
| * @throws InvalidObjectException always |
| */ |
| private Object readResolve() throws InvalidObjectException { |
| throw new InvalidObjectException("Deserialization via serialization delegate"); |
| } |
| |
| /** |
| * Writes the object using a |
| * <a href="../../../serialized-form.html#java.time.chrono.Ser">dedicated serialized form</a>. |
| * @serialData |
| * <pre> |
| * out.writeByte(6); // identifies a HijrahDate |
| * out.writeObject(chrono); // the HijrahChronology variant |
| * out.writeInt(get(YEAR)); |
| * out.writeByte(get(MONTH_OF_YEAR)); |
| * out.writeByte(get(DAY_OF_MONTH)); |
| * </pre> |
| * |
| * @return the instance of {@code Ser}, not null |
| */ |
| private Object writeReplace() { |
| return new Ser(Ser.HIJRAH_DATE_TYPE, this); |
| } |
| |
| void writeExternal(ObjectOutput out) throws IOException { |
| // HijrahChronology is implicit in the Hijrah_DATE_TYPE |
| out.writeObject(getChronology()); |
| out.writeInt(get(YEAR)); |
| out.writeByte(get(MONTH_OF_YEAR)); |
| out.writeByte(get(DAY_OF_MONTH)); |
| } |
| |
| static HijrahDate readExternal(ObjectInput in) throws IOException, ClassNotFoundException { |
| HijrahChronology chrono = (HijrahChronology) in.readObject(); |
| int year = in.readInt(); |
| int month = in.readByte(); |
| int dayOfMonth = in.readByte(); |
| return chrono.date(year, month, dayOfMonth); |
| } |
| |
| } |
