| /* |
| * 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.chrono.MinguoChronology.YEARS_DIFFERENCE; |
| 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.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.io.InvalidObjectException; |
| import java.io.ObjectInputStream; |
| import java.io.Serializable; |
| import java.time.Clock; |
| import java.time.DateTimeException; |
| import java.time.LocalDate; |
| import java.time.LocalTime; |
| import java.time.Period; |
| 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; |
| import java.util.Objects; |
| |
| // Android-changed: removed ValueBased paragraph. |
| /** |
| * A date in the Minguo calendar system. |
| * <p> |
| * This date operates using the {@linkplain MinguoChronology Minguo calendar}. |
| * This calendar system is primarily used in the Republic of China, often known as Taiwan. |
| * Dates are aligned such that {@code 0001-01-01 (Minguo)} is {@code 1912-01-01 (ISO)}. |
| * |
| * @implSpec |
| * This class is immutable and thread-safe. |
| * |
| * @since 1.8 |
| */ |
| public final class MinguoDate |
| extends ChronoLocalDateImpl<MinguoDate> |
| implements ChronoLocalDate, Serializable { |
| |
| /** |
| * Serialization version. |
| */ |
| private static final long serialVersionUID = 1300372329181994526L; |
| |
| /** |
| * The underlying date. |
| */ |
| private final transient LocalDate isoDate; |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Obtains the current {@code MinguoDate} from the system clock 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 MinguoDate now() { |
| return now(Clock.systemDefaultZone()); |
| } |
| |
| /** |
| * Obtains the current {@code MinguoDate} from the system clock 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 MinguoDate now(ZoneId zone) { |
| return now(Clock.system(zone)); |
| } |
| |
| /** |
| * Obtains the current {@code MinguoDate} 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 MinguoDate now(Clock clock) { |
| return new MinguoDate(LocalDate.now(clock)); |
| } |
| |
| /** |
| * Obtains a {@code MinguoDate} representing a date in the Minguo calendar |
| * system from the proleptic-year, month-of-year and day-of-month fields. |
| * <p> |
| * This returns a {@code MinguoDate} with the specified fields. |
| * The day must be valid for the year and month, otherwise an exception will be thrown. |
| * |
| * @param prolepticYear the Minguo proleptic-year |
| * @param month the Minguo month-of-year, from 1 to 12 |
| * @param dayOfMonth the Minguo day-of-month, from 1 to 31 |
| * @return the date in Minguo 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 MinguoDate of(int prolepticYear, int month, int dayOfMonth) { |
| return new MinguoDate(LocalDate.of(prolepticYear + YEARS_DIFFERENCE, month, dayOfMonth)); |
| } |
| |
| /** |
| * Obtains a {@code MinguoDate} from a temporal object. |
| * <p> |
| * This obtains a date in the Minguo 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 MinguoDate}. |
| * <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 MinguoDate::from}. |
| * |
| * @param temporal the temporal object to convert, not null |
| * @return the date in Minguo calendar system, not null |
| * @throws DateTimeException if unable to convert to a {@code MinguoDate} |
| */ |
| public static MinguoDate from(TemporalAccessor temporal) { |
| return MinguoChronology.INSTANCE.date(temporal); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Creates an instance from an ISO date. |
| * |
| * @param isoDate the standard local date, validated not null |
| */ |
| MinguoDate(LocalDate isoDate) { |
| Objects.requireNonNull(isoDate, "isoDate"); |
| this.isoDate = isoDate; |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Gets the chronology of this date, which is the Minguo 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 Minguo chronology, not null |
| */ |
| @Override |
| public MinguoChronology getChronology() { |
| return MinguoChronology.INSTANCE; |
| } |
| |
| /** |
| * Gets the era applicable at this date. |
| * <p> |
| * The Minguo calendar system has two eras, 'ROC' and 'BEFORE_ROC', |
| * defined by {@link MinguoEra}. |
| * |
| * @return the era applicable at this date, not null |
| */ |
| @Override |
| public MinguoEra getEra() { |
| return (getProlepticYear() >= 1 ? MinguoEra.ROC : MinguoEra.BEFORE_ROC); |
| } |
| |
| /** |
| * Returns the length of the month represented by this date. |
| * <p> |
| * This returns the length of the month in days. |
| * Month lengths match those of the ISO calendar system. |
| * |
| * @return the length of the month in days |
| */ |
| @Override |
| public int lengthOfMonth() { |
| return isoDate.lengthOfMonth(); |
| } |
| |
| //----------------------------------------------------------------------- |
| @Override |
| public ValueRange range(TemporalField field) { |
| if (field instanceof ChronoField) { |
| if (isSupported(field)) { |
| ChronoField f = (ChronoField) field; |
| switch (f) { |
| case DAY_OF_MONTH: |
| case DAY_OF_YEAR: |
| case ALIGNED_WEEK_OF_MONTH: |
| return isoDate.range(field); |
| case YEAR_OF_ERA: { |
| ValueRange range = YEAR.range(); |
| long max = (getProlepticYear() <= 0 ? -range.getMinimum() + 1 + YEARS_DIFFERENCE : range.getMaximum() - YEARS_DIFFERENCE); |
| return ValueRange.of(1, max); |
| } |
| } |
| 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 PROLEPTIC_MONTH: |
| return getProlepticMonth(); |
| case YEAR_OF_ERA: { |
| int prolepticYear = getProlepticYear(); |
| return (prolepticYear >= 1 ? prolepticYear : 1 - prolepticYear); |
| } |
| case YEAR: |
| return getProlepticYear(); |
| case ERA: |
| return (getProlepticYear() >= 1 ? 1 : 0); |
| } |
| return isoDate.getLong(field); |
| } |
| return field.getFrom(this); |
| } |
| |
| private long getProlepticMonth() { |
| return getProlepticYear() * 12L + isoDate.getMonthValue() - 1; |
| } |
| |
| private int getProlepticYear() { |
| return isoDate.getYear() - YEARS_DIFFERENCE; |
| } |
| |
| //----------------------------------------------------------------------- |
| @Override |
| public MinguoDate with(TemporalField field, long newValue) { |
| if (field instanceof ChronoField) { |
| ChronoField f = (ChronoField) field; |
| if (getLong(f) == newValue) { |
| return this; |
| } |
| switch (f) { |
| case PROLEPTIC_MONTH: |
| getChronology().range(f).checkValidValue(newValue, f); |
| return plusMonths(newValue - getProlepticMonth()); |
| case YEAR_OF_ERA: |
| case YEAR: |
| case ERA: { |
| int nvalue = getChronology().range(f).checkValidIntValue(newValue, f); |
| switch (f) { |
| case YEAR_OF_ERA: |
| return with(isoDate.withYear(getProlepticYear() >= 1 ? nvalue + YEARS_DIFFERENCE : (1 - nvalue) + YEARS_DIFFERENCE)); |
| case YEAR: |
| return with(isoDate.withYear(nvalue + YEARS_DIFFERENCE)); |
| case ERA: |
| return with(isoDate.withYear((1 - getProlepticYear()) + YEARS_DIFFERENCE)); |
| } |
| } |
| } |
| return with(isoDate.with(field, newValue)); |
| } |
| return super.with(field, newValue); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @throws DateTimeException {@inheritDoc} |
| * @throws ArithmeticException {@inheritDoc} |
| */ |
| @Override |
| public MinguoDate with(TemporalAdjuster adjuster) { |
| return super.with(adjuster); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @throws DateTimeException {@inheritDoc} |
| * @throws ArithmeticException {@inheritDoc} |
| */ |
| @Override |
| public MinguoDate plus(TemporalAmount amount) { |
| return super.plus(amount); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @throws DateTimeException {@inheritDoc} |
| * @throws ArithmeticException {@inheritDoc} |
| */ |
| @Override |
| public MinguoDate minus(TemporalAmount amount) { |
| return super.minus(amount); |
| } |
| |
| //----------------------------------------------------------------------- |
| @Override |
| MinguoDate plusYears(long years) { |
| return with(isoDate.plusYears(years)); |
| } |
| |
| @Override |
| MinguoDate plusMonths(long months) { |
| return with(isoDate.plusMonths(months)); |
| } |
| |
| @Override |
| MinguoDate plusWeeks(long weeksToAdd) { |
| return super.plusWeeks(weeksToAdd); |
| } |
| |
| @Override |
| MinguoDate plusDays(long days) { |
| return with(isoDate.plusDays(days)); |
| } |
| |
| @Override |
| public MinguoDate plus(long amountToAdd, TemporalUnit unit) { |
| return super.plus(amountToAdd, unit); |
| } |
| |
| @Override |
| public MinguoDate minus(long amountToAdd, TemporalUnit unit) { |
| return super.minus(amountToAdd, unit); |
| } |
| |
| @Override |
| MinguoDate minusYears(long yearsToSubtract) { |
| return super.minusYears(yearsToSubtract); |
| } |
| |
| @Override |
| MinguoDate minusMonths(long monthsToSubtract) { |
| return super.minusMonths(monthsToSubtract); |
| } |
| |
| @Override |
| MinguoDate minusWeeks(long weeksToSubtract) { |
| return super.minusWeeks(weeksToSubtract); |
| } |
| |
| @Override |
| MinguoDate minusDays(long daysToSubtract) { |
| return super.minusDays(daysToSubtract); |
| } |
| |
| private MinguoDate with(LocalDate newDate) { |
| return (newDate.equals(isoDate) ? this : new MinguoDate(newDate)); |
| } |
| |
| @Override // for javadoc and covariant return type |
| @SuppressWarnings("unchecked") |
| public final ChronoLocalDateTime<MinguoDate> atTime(LocalTime localTime) { |
| return (ChronoLocalDateTime<MinguoDate>)super.atTime(localTime); |
| } |
| |
| @Override |
| public ChronoPeriod until(ChronoLocalDate endDate) { |
| Period period = isoDate.until(endDate); |
| return getChronology().period(period.getYears(), period.getMonths(), period.getDays()); |
| } |
| |
| @Override // override for performance |
| public long toEpochDay() { |
| return isoDate.toEpochDay(); |
| } |
| |
| //------------------------------------------------------------------------- |
| /** |
| * Compares this date to another date, including the chronology. |
| * <p> |
| * Compares this {@code MinguoDate} with another ensuring that the date is the same. |
| * <p> |
| * Only objects of type {@code MinguoDate} are compared, other types return false. |
| * To compare the dates of two {@code TemporalAccessor} instances, including dates |
| * in two different chronologies, use {@link ChronoField#EPOCH_DAY} as a comparator. |
| * |
| * @param obj the object to check, null returns false |
| * @return true if this is equal to the other date |
| */ |
| @Override // override for performance |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof MinguoDate) { |
| MinguoDate otherDate = (MinguoDate) obj; |
| return this.isoDate.equals(otherDate.isoDate); |
| } |
| return false; |
| } |
| |
| /** |
| * A hash code for this date. |
| * |
| * @return a suitable hash code based only on the Chronology and the date |
| */ |
| @Override // override for performance |
| public int hashCode() { |
| return getChronology().getId().hashCode() ^ isoDate.hashCode(); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Defend against malicious streams. |
| * |
| * @param s the stream to read |
| * @throws InvalidObjectException always |
| */ |
| private void readObject(ObjectInputStream s) 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(8); // identifies a MinguoDate |
| * 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.MINGUO_DATE_TYPE, this); |
| } |
| |
| void writeExternal(DataOutput out) throws IOException { |
| // MinguoChronology is implicit in the MINGUO_DATE_TYPE |
| out.writeInt(get(YEAR)); |
| out.writeByte(get(MONTH_OF_YEAR)); |
| out.writeByte(get(DAY_OF_MONTH)); |
| } |
| |
| static MinguoDate readExternal(DataInput in) throws IOException { |
| int year = in.readInt(); |
| int month = in.readByte(); |
| int dayOfMonth = in.readByte(); |
| return MinguoChronology.INSTANCE.date(year, month, dayOfMonth); |
| } |
| |
| } |
