513 lines
18 KiB
Java
513 lines
18 KiB
Java
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/*
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* Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* Copyright (c) 2012, Stephen Colebourne & Michael Nascimento Santos
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* * Neither the name of JSR-310 nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package java.time.chrono;
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import static java.time.chrono.MinguoChronology.YEARS_DIFFERENCE;
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import static java.time.temporal.ChronoField.DAY_OF_MONTH;
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import static java.time.temporal.ChronoField.MONTH_OF_YEAR;
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import static java.time.temporal.ChronoField.YEAR;
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import java.io.DataInput;
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import java.io.DataOutput;
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import java.io.IOException;
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import java.io.InvalidObjectException;
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import java.io.ObjectInputStream;
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import java.io.Serializable;
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import java.time.Clock;
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import java.time.DateTimeException;
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import java.time.LocalDate;
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import java.time.LocalTime;
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import java.time.Period;
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import java.time.ZoneId;
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import java.time.temporal.ChronoField;
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import java.time.temporal.TemporalAccessor;
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import java.time.temporal.TemporalAdjuster;
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import java.time.temporal.TemporalAmount;
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import java.time.temporal.TemporalField;
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import java.time.temporal.TemporalQuery;
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import java.time.temporal.TemporalUnit;
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import java.time.temporal.UnsupportedTemporalTypeException;
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import java.time.temporal.ValueRange;
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import java.util.Objects;
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// Android-changed: removed ValueBased paragraph.
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/**
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* A date in the Minguo calendar system.
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* <p>
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* This date operates using the {@linkplain MinguoChronology Minguo calendar}.
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* This calendar system is primarily used in the Republic of China, often known as Taiwan.
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* Dates are aligned such that {@code 0001-01-01 (Minguo)} is {@code 1912-01-01 (ISO)}.
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*
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* @implSpec
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* This class is immutable and thread-safe.
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*
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* @since 1.8
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*/
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public final class MinguoDate
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extends ChronoLocalDateImpl<MinguoDate>
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implements ChronoLocalDate, Serializable {
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/**
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* Serialization version.
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*/
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@java.io.Serial
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private static final long serialVersionUID = 1300372329181994526L;
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/**
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* The underlying date.
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*/
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private final transient LocalDate isoDate;
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//-----------------------------------------------------------------------
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/**
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* Obtains the current {@code MinguoDate} from the system clock in the default time-zone.
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* <p>
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* This will query the {@link Clock#systemDefaultZone() system clock} in the default
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* time-zone to obtain the current date.
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* <p>
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* Using this method will prevent the ability to use an alternate clock for testing
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* because the clock is hard-coded.
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*
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* @return the current date using the system clock and default time-zone, not null
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*/
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public static MinguoDate now() {
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return now(Clock.systemDefaultZone());
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}
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/**
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* Obtains the current {@code MinguoDate} from the system clock in the specified time-zone.
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* <p>
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* This will query the {@link Clock#system(ZoneId) system clock} to obtain the current date.
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* Specifying the time-zone avoids dependence on the default time-zone.
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* <p>
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* Using this method will prevent the ability to use an alternate clock for testing
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* because the clock is hard-coded.
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*
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* @param zone the zone ID to use, not null
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* @return the current date using the system clock, not null
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*/
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public static MinguoDate now(ZoneId zone) {
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return now(Clock.system(zone));
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}
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/**
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* Obtains the current {@code MinguoDate} from the specified clock.
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* <p>
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* This will query the specified clock to obtain the current date - today.
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* Using this method allows the use of an alternate clock for testing.
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* The alternate clock may be introduced using {@linkplain Clock dependency injection}.
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*
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* @param clock the clock to use, not null
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* @return the current date, not null
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* @throws DateTimeException if the current date cannot be obtained
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*/
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public static MinguoDate now(Clock clock) {
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return new MinguoDate(LocalDate.now(clock));
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}
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/**
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* Obtains a {@code MinguoDate} representing a date in the Minguo calendar
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* system from the proleptic-year, month-of-year and day-of-month fields.
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* <p>
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* This returns a {@code MinguoDate} with the specified fields.
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* The day must be valid for the year and month, otherwise an exception will be thrown.
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*
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* @param prolepticYear the Minguo proleptic-year
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* @param month the Minguo month-of-year, from 1 to 12
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* @param dayOfMonth the Minguo day-of-month, from 1 to 31
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* @return the date in Minguo calendar system, not null
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* @throws DateTimeException if the value of any field is out of range,
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* or if the day-of-month is invalid for the month-year
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*/
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public static MinguoDate of(int prolepticYear, int month, int dayOfMonth) {
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return new MinguoDate(LocalDate.of(prolepticYear + YEARS_DIFFERENCE, month, dayOfMonth));
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}
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/**
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* Obtains a {@code MinguoDate} from a temporal object.
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* <p>
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* This obtains a date in the Minguo calendar system based on the specified temporal.
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* A {@code TemporalAccessor} represents an arbitrary set of date and time information,
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* which this factory converts to an instance of {@code MinguoDate}.
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* <p>
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* The conversion typically uses the {@link ChronoField#EPOCH_DAY EPOCH_DAY}
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* field, which is standardized across calendar systems.
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* <p>
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* This method matches the signature of the functional interface {@link TemporalQuery}
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* allowing it to be used as a query via method reference, {@code MinguoDate::from}.
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*
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* @param temporal the temporal object to convert, not null
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* @return the date in Minguo calendar system, not null
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* @throws DateTimeException if unable to convert to a {@code MinguoDate}
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*/
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public static MinguoDate from(TemporalAccessor temporal) {
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return MinguoChronology.INSTANCE.date(temporal);
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}
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//-----------------------------------------------------------------------
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/**
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* Creates an instance from an ISO date.
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*
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* @param isoDate the standard local date, validated not null
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*/
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MinguoDate(LocalDate isoDate) {
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Objects.requireNonNull(isoDate, "isoDate");
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this.isoDate = isoDate;
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}
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//-----------------------------------------------------------------------
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/**
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* Gets the chronology of this date, which is the Minguo calendar system.
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* <p>
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* The {@code Chronology} represents the calendar system in use.
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* The era and other fields in {@link ChronoField} are defined by the chronology.
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*
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* @return the Minguo chronology, not null
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*/
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@Override
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public MinguoChronology getChronology() {
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return MinguoChronology.INSTANCE;
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}
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/**
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* Gets the era applicable at this date.
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* <p>
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* The Minguo calendar system has two eras, 'ROC' and 'BEFORE_ROC',
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* defined by {@link MinguoEra}.
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*
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* @return the era applicable at this date, not null
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*/
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@Override
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public MinguoEra getEra() {
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return (getProlepticYear() >= 1 ? MinguoEra.ROC : MinguoEra.BEFORE_ROC);
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}
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/**
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* Returns the length of the month represented by this date.
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* <p>
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* This returns the length of the month in days.
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* Month lengths match those of the ISO calendar system.
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*
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* @return the length of the month in days
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*/
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@Override
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public int lengthOfMonth() {
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return isoDate.lengthOfMonth();
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}
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//-----------------------------------------------------------------------
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@Override
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public ValueRange range(TemporalField field) {
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if (field instanceof ChronoField) {
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if (isSupported(field)) {
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ChronoField f = (ChronoField) field;
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switch (f) {
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case DAY_OF_MONTH:
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case DAY_OF_YEAR:
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case ALIGNED_WEEK_OF_MONTH:
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return isoDate.range(field);
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case YEAR_OF_ERA: {
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ValueRange range = YEAR.range();
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long max = (getProlepticYear() <= 0 ? -range.getMinimum() + 1 + YEARS_DIFFERENCE : range.getMaximum() - YEARS_DIFFERENCE);
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return ValueRange.of(1, max);
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}
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}
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return getChronology().range(f);
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}
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throw new UnsupportedTemporalTypeException("Unsupported field: " + field);
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}
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return field.rangeRefinedBy(this);
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}
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@Override
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public long getLong(TemporalField field) {
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if (field instanceof ChronoField) {
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switch ((ChronoField) field) {
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case PROLEPTIC_MONTH:
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return getProlepticMonth();
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case YEAR_OF_ERA: {
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int prolepticYear = getProlepticYear();
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return (prolepticYear >= 1 ? prolepticYear : 1 - prolepticYear);
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}
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case YEAR:
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return getProlepticYear();
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case ERA:
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return (getProlepticYear() >= 1 ? 1 : 0);
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}
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return isoDate.getLong(field);
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}
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return field.getFrom(this);
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}
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private long getProlepticMonth() {
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return getProlepticYear() * 12L + isoDate.getMonthValue() - 1;
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}
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private int getProlepticYear() {
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return isoDate.getYear() - YEARS_DIFFERENCE;
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}
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//-----------------------------------------------------------------------
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@Override
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public MinguoDate with(TemporalField field, long newValue) {
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if (field instanceof ChronoField chronoField) {
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if (getLong(chronoField) == newValue) {
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return this;
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}
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switch (chronoField) {
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case PROLEPTIC_MONTH:
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getChronology().range(chronoField).checkValidValue(newValue, chronoField);
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return plusMonths(newValue - getProlepticMonth());
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case YEAR_OF_ERA:
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case YEAR:
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case ERA: {
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int nvalue = getChronology().range(chronoField).checkValidIntValue(newValue, chronoField);
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switch (chronoField) {
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case YEAR_OF_ERA:
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return with(isoDate.withYear(getProlepticYear() >= 1 ? nvalue + YEARS_DIFFERENCE : (1 - nvalue) + YEARS_DIFFERENCE));
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case YEAR:
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return with(isoDate.withYear(nvalue + YEARS_DIFFERENCE));
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case ERA:
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return with(isoDate.withYear((1 - getProlepticYear()) + YEARS_DIFFERENCE));
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}
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}
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}
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return with(isoDate.with(field, newValue));
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}
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return super.with(field, newValue);
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}
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/**
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* {@inheritDoc}
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* @throws DateTimeException {@inheritDoc}
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* @throws ArithmeticException {@inheritDoc}
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*/
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@Override
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public MinguoDate with(TemporalAdjuster adjuster) {
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return super.with(adjuster);
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}
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/**
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* {@inheritDoc}
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* @throws DateTimeException {@inheritDoc}
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* @throws ArithmeticException {@inheritDoc}
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*/
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@Override
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public MinguoDate plus(TemporalAmount amount) {
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return super.plus(amount);
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}
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/**
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* {@inheritDoc}
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* @throws DateTimeException {@inheritDoc}
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* @throws ArithmeticException {@inheritDoc}
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*/
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@Override
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public MinguoDate minus(TemporalAmount amount) {
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return super.minus(amount);
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}
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//-----------------------------------------------------------------------
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@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;
|
||
|
|
}
|
||
|
|
return (obj instanceof MinguoDate otherDate)
|
||
|
|
&& this.isoDate.equals(otherDate.isoDate);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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
|
||
|
|
*/
|
||
|
|
@java.io.Serial
|
||
|
|
private void readObject(ObjectInputStream s) throws InvalidObjectException {
|
||
|
|
throw new InvalidObjectException("Deserialization via serialization delegate");
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Writes the object using a
|
||
|
|
* <a href="{@docRoot}/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
|
||
|
|
*/
|
||
|
|
@java.io.Serial
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|