709 lines
30 KiB
Java
709 lines
30 KiB
Java
/*
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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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* This file is available under and governed by the GNU General Public
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* License version 2 only, as published by the Free Software Foundation.
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* However, the following notice accompanied the original version of this
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* file:
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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.temporal.ChronoField.DAY_OF_MONTH;
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import static java.time.temporal.ChronoField.ERA;
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import static java.time.temporal.ChronoField.HOUR_OF_DAY;
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import static java.time.temporal.ChronoField.MINUTE_OF_HOUR;
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import static java.time.temporal.ChronoField.MONTH_OF_YEAR;
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import static java.time.temporal.ChronoField.PROLEPTIC_MONTH;
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import static java.time.temporal.ChronoField.SECOND_OF_MINUTE;
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import static java.time.temporal.ChronoField.YEAR;
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import static java.time.temporal.ChronoField.YEAR_OF_ERA;
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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.Instant;
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import java.time.LocalDate;
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import java.time.LocalDateTime;
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import java.time.Month;
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import java.time.Period;
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import java.time.Year;
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import java.time.ZonedDateTime;
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import java.time.ZoneId;
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import java.time.ZoneOffset;
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import java.time.format.ResolverStyle;
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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.TemporalField;
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import java.time.temporal.ValueRange;
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import java.util.List;
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import java.util.Locale;
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import java.util.Map;
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import java.util.Objects;
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/**
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* The ISO calendar system.
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* <p>
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* This chronology defines the rules of the ISO calendar system.
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* This calendar system is based on the ISO-8601 standard, which is the
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* <i>de facto</i> world calendar.
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* <p>
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* The fields are defined as follows:
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* <ul>
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* <li>era - There are two eras, 'Current Era' (CE) and 'Before Current Era' (BCE).
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* <li>year-of-era - The year-of-era is the same as the proleptic-year for the current CE era.
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* For the BCE era before the ISO epoch the year increases from 1 upwards as time goes backwards.
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* <li>proleptic-year - The proleptic year is the same as the year-of-era for the
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* current era. For the previous era, years have zero, then negative values.
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* <li>month-of-year - There are 12 months in an ISO year, numbered from 1 to 12.
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* <li>day-of-month - There are between 28 and 31 days in each of the ISO month, numbered from 1 to 31.
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* Months 4, 6, 9 and 11 have 30 days, Months 1, 3, 5, 7, 8, 10 and 12 have 31 days.
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* Month 2 has 28 days, or 29 in a leap year.
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* <li>day-of-year - There are 365 days in a standard ISO year and 366 in a leap year.
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* The days are numbered from 1 to 365 or 1 to 366.
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* <li>leap-year - Leap years occur every 4 years, except where the year is divisble by 100 and not divisble by 400.
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* </ul>
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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 IsoChronology extends AbstractChronology implements Serializable {
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/**
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* Singleton instance of the ISO chronology.
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*/
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public static final IsoChronology INSTANCE = new IsoChronology();
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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 = -1440403870442975015L;
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private static final long DAYS_0000_TO_1970 = (146097 * 5L) - (30L * 365L + 7L); // taken from LocalDate
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/**
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* Restricted constructor.
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*/
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private IsoChronology() {
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}
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//-----------------------------------------------------------------------
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/**
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* Gets the ID of the chronology - 'ISO'.
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* <p>
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* The ID uniquely identifies the {@code Chronology}.
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* It can be used to lookup the {@code Chronology} using {@link Chronology#of(String)}.
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*
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* @return the chronology ID - 'ISO'
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* @see #getCalendarType()
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*/
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@Override
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public String getId() {
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return "ISO";
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}
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/**
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* Gets the calendar type of the underlying calendar system - 'iso8601'.
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* <p>
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* The calendar type is an identifier defined by the
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* <em>Unicode Locale Data Markup Language (LDML)</em> specification.
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* It can be used to lookup the {@code Chronology} using {@link Chronology#of(String)}.
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* It can also be used as part of a locale, accessible via
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* {@link Locale#getUnicodeLocaleType(String)} with the key 'ca'.
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*
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* @return the calendar system type - 'iso8601'
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* @see #getId()
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*/
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@Override
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public String getCalendarType() {
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return "iso8601";
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}
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//-----------------------------------------------------------------------
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/**
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* Obtains an ISO local date from the era, year-of-era, month-of-year
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* and day-of-month fields.
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*
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* @param era the ISO era, not null
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* @param yearOfEra the ISO year-of-era
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* @param month the ISO month-of-year
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* @param dayOfMonth the ISO day-of-month
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* @return the ISO local date, not null
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* @throws DateTimeException if unable to create the date
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* @throws ClassCastException if the type of {@code era} is not {@code IsoEra}
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*/
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@Override // override with covariant return type
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public LocalDate date(Era era, int yearOfEra, int month, int dayOfMonth) {
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return date(prolepticYear(era, yearOfEra), month, dayOfMonth);
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}
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/**
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* Obtains an ISO local date from the proleptic-year, month-of-year
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* and day-of-month fields.
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* <p>
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* This is equivalent to {@link LocalDate#of(int, int, int)}.
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*
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* @param prolepticYear the ISO proleptic-year
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* @param month the ISO month-of-year
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* @param dayOfMonth the ISO day-of-month
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* @return the ISO local date, not null
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* @throws DateTimeException if unable to create the date
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*/
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@Override // override with covariant return type
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public LocalDate date(int prolepticYear, int month, int dayOfMonth) {
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return LocalDate.of(prolepticYear, month, dayOfMonth);
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}
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/**
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* Obtains an ISO local date from the era, year-of-era and day-of-year fields.
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*
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* @param era the ISO era, not null
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* @param yearOfEra the ISO year-of-era
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* @param dayOfYear the ISO day-of-year
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* @return the ISO local date, not null
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* @throws DateTimeException if unable to create the date
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*/
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@Override // override with covariant return type
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public LocalDate dateYearDay(Era era, int yearOfEra, int dayOfYear) {
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return dateYearDay(prolepticYear(era, yearOfEra), dayOfYear);
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}
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/**
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* Obtains an ISO local date from the proleptic-year and day-of-year fields.
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* <p>
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* This is equivalent to {@link LocalDate#ofYearDay(int, int)}.
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*
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* @param prolepticYear the ISO proleptic-year
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* @param dayOfYear the ISO day-of-year
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* @return the ISO local date, not null
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* @throws DateTimeException if unable to create the date
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*/
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@Override // override with covariant return type
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public LocalDate dateYearDay(int prolepticYear, int dayOfYear) {
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return LocalDate.ofYearDay(prolepticYear, dayOfYear);
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}
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/**
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* Obtains an ISO local date from the epoch-day.
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* <p>
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* This is equivalent to {@link LocalDate#ofEpochDay(long)}.
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*
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* @param epochDay the epoch day
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* @return the ISO local date, not null
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* @throws DateTimeException if unable to create the date
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*/
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@Override // override with covariant return type
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public LocalDate dateEpochDay(long epochDay) {
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return LocalDate.ofEpochDay(epochDay);
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}
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//-----------------------------------------------------------------------
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/**
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* Obtains an ISO local date from another date-time object.
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* <p>
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* This is equivalent to {@link LocalDate#from(TemporalAccessor)}.
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*
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* @param temporal the date-time object to convert, not null
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* @return the ISO local date, not null
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* @throws DateTimeException if unable to create the date
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*/
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@Override // override with covariant return type
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public LocalDate date(TemporalAccessor temporal) {
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return LocalDate.from(temporal);
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}
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//-----------------------------------------------------------------------
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/**
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* Gets the number of seconds from the epoch of 1970-01-01T00:00:00Z.
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* <p>
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* The number of seconds is calculated using the year,
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* month, day-of-month, hour, minute, second, and zoneOffset.
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*
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* @param prolepticYear the year, from MIN_YEAR to MAX_YEAR
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* @param month the month-of-year, from 1 to 12
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* @param dayOfMonth the day-of-month, from 1 to 31
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* @param hour the hour-of-day, from 0 to 23
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* @param minute the minute-of-hour, from 0 to 59
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* @param second the second-of-minute, from 0 to 59
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* @param zoneOffset the zone offset, not null
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* @return the number of seconds relative to 1970-01-01T00:00:00Z, may be negative
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* @throws DateTimeException if the value of any argument is out of range,
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* or if the day-of-month is invalid for the month-of-year
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* @since 9
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*/
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@Override
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public long epochSecond(int prolepticYear, int month, int dayOfMonth,
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int hour, int minute, int second, ZoneOffset zoneOffset) {
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YEAR.checkValidValue(prolepticYear);
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MONTH_OF_YEAR.checkValidValue(month);
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DAY_OF_MONTH.checkValidValue(dayOfMonth);
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HOUR_OF_DAY.checkValidValue(hour);
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MINUTE_OF_HOUR.checkValidValue(minute);
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SECOND_OF_MINUTE.checkValidValue(second);
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Objects.requireNonNull(zoneOffset, "zoneOffset");
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if (dayOfMonth > 28) {
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int dom = numberOfDaysOfMonth(prolepticYear, month);
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if (dayOfMonth > dom) {
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if (dayOfMonth == 29) {
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throw new DateTimeException("Invalid date 'February 29' as '" + prolepticYear + "' is not a leap year");
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} else {
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throw new DateTimeException("Invalid date '" + Month.of(month).name() + " " + dayOfMonth + "'");
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}
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}
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}
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long totalDays = 0;
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int timeinSec = 0;
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totalDays += 365L * prolepticYear;
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if (prolepticYear >= 0) {
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totalDays += (prolepticYear + 3L) / 4 - (prolepticYear + 99L) / 100 + (prolepticYear + 399L) / 400;
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} else {
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totalDays -= prolepticYear / -4 - prolepticYear / -100 + prolepticYear / -400;
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}
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totalDays += (367 * month - 362) / 12;
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totalDays += dayOfMonth - 1;
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if (month > 2) {
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totalDays--;
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if (IsoChronology.INSTANCE.isLeapYear(prolepticYear) == false) {
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totalDays--;
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}
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}
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totalDays -= DAYS_0000_TO_1970;
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timeinSec = (hour * 60 + minute ) * 60 + second;
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return Math.addExact(Math.multiplyExact(totalDays, 86400L), timeinSec - zoneOffset.getTotalSeconds());
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}
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/**
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* Gets the number of days for the given month in the given year.
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*
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* @param year the year to represent, from MIN_YEAR to MAX_YEAR
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* @param month the month-of-year to represent, from 1 to 12
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* @return the number of days for the given month in the given year
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*/
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private int numberOfDaysOfMonth(int year, int month) {
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int dom;
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switch (month) {
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case 2:
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dom = (IsoChronology.INSTANCE.isLeapYear(year) ? 29 : 28);
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break;
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case 4:
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case 6:
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case 9:
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case 11:
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dom = 30;
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break;
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default:
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dom = 31;
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break;
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}
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return dom;
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}
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/**
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* Obtains an ISO local date-time from another date-time object.
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* <p>
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* This is equivalent to {@link LocalDateTime#from(TemporalAccessor)}.
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*
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* @param temporal the date-time object to convert, not null
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* @return the ISO local date-time, not null
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* @throws DateTimeException if unable to create the date-time
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*/
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@Override // override with covariant return type
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public LocalDateTime localDateTime(TemporalAccessor temporal) {
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return LocalDateTime.from(temporal);
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}
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/**
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* Obtains an ISO zoned date-time from another date-time object.
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* <p>
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* This is equivalent to {@link ZonedDateTime#from(TemporalAccessor)}.
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*
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* @param temporal the date-time object to convert, not null
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* @return the ISO zoned date-time, not null
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* @throws DateTimeException if unable to create the date-time
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*/
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@Override // override with covariant return type
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public ZonedDateTime zonedDateTime(TemporalAccessor temporal) {
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return ZonedDateTime.from(temporal);
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}
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/**
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* Obtains an ISO zoned date-time in this chronology from an {@code Instant}.
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* <p>
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* This is equivalent to {@link ZonedDateTime#ofInstant(Instant, ZoneId)}.
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*
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* @param instant the instant to create the date-time from, not null
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* @param zone the time-zone, not null
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* @return the zoned date-time, not null
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* @throws DateTimeException if the result exceeds the supported range
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*/
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@Override
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public ZonedDateTime zonedDateTime(Instant instant, ZoneId zone) {
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return ZonedDateTime.ofInstant(instant, zone);
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}
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//-----------------------------------------------------------------------
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/**
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* Obtains the current ISO local date 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 ISO local date using the system clock and default time-zone, not null
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* @throws DateTimeException if unable to create the date
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*/
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@Override // override with covariant return type
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public LocalDate dateNow() {
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return dateNow(Clock.systemDefaultZone());
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}
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/**
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* Obtains the current ISO local date 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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* @return the current ISO local date using the system clock, not null
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* @throws DateTimeException if unable to create the date
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*/
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@Override // override with covariant return type
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public LocalDate dateNow(ZoneId zone) {
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return dateNow(Clock.system(zone));
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}
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/**
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* Obtains the current ISO local date 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 {@link 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 ISO local date, not null
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* @throws DateTimeException if unable to create the date
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*/
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@Override // override with covariant return type
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public LocalDate dateNow(Clock clock) {
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Objects.requireNonNull(clock, "clock");
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return date(LocalDate.now(clock));
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}
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//-----------------------------------------------------------------------
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/**
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* Checks if the year is a leap year, according to the ISO proleptic
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* calendar system rules.
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* <p>
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* This method applies the current rules for leap years across the whole time-line.
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* In general, a year is a leap year if it is divisible by four without
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* remainder. However, years divisible by 100, are not leap years, with
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* the exception of years divisible by 400 which are.
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* <p>
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* For example, 1904 is a leap year it is divisible by 4.
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* 1900 was not a leap year as it is divisible by 100, however 2000 was a
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* leap year as it is divisible by 400.
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* <p>
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* The calculation is proleptic - applying the same rules into the far future and far past.
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* This is historically inaccurate, but is correct for the ISO-8601 standard.
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*
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* @param prolepticYear the ISO proleptic year to check
|
|
* @return true if the year is leap, false otherwise
|
|
*/
|
|
@Override
|
|
public boolean isLeapYear(long prolepticYear) {
|
|
return ((prolepticYear & 3) == 0) && ((prolepticYear % 100) != 0 || (prolepticYear % 400) == 0);
|
|
}
|
|
|
|
@Override
|
|
public int prolepticYear(Era era, int yearOfEra) {
|
|
if (!(era instanceof IsoEra)) {
|
|
throw new ClassCastException("Era must be IsoEra");
|
|
}
|
|
return (era == IsoEra.CE ? yearOfEra : 1 - yearOfEra);
|
|
}
|
|
|
|
@Override
|
|
public IsoEra eraOf(int eraValue) {
|
|
return IsoEra.of(eraValue);
|
|
}
|
|
|
|
@Override
|
|
public List<Era> eras() {
|
|
return List.of(IsoEra.values());
|
|
}
|
|
|
|
//-----------------------------------------------------------------------
|
|
/**
|
|
* Resolves parsed {@code ChronoField} values into a date during parsing.
|
|
* <p>
|
|
* Most {@code TemporalField} implementations are resolved using the
|
|
* resolve method on the field. By contrast, the {@code ChronoField} class
|
|
* defines fields that only have meaning relative to the chronology.
|
|
* As such, {@code ChronoField} date fields are resolved here in the
|
|
* context of a specific chronology.
|
|
* <p>
|
|
* {@code ChronoField} instances on the ISO calendar system are resolved
|
|
* as follows.
|
|
* <ul>
|
|
* <li>{@code EPOCH_DAY} - If present, this is converted to a {@code LocalDate}
|
|
* and all other date fields are then cross-checked against the date.
|
|
* <li>{@code PROLEPTIC_MONTH} - If present, then it is split into the
|
|
* {@code YEAR} and {@code MONTH_OF_YEAR}. If the mode is strict or smart
|
|
* then the field is validated.
|
|
* <li>{@code YEAR_OF_ERA} and {@code ERA} - If both are present, then they
|
|
* are combined to form a {@code YEAR}. In lenient mode, the {@code YEAR_OF_ERA}
|
|
* range is not validated, in smart and strict mode it is. The {@code ERA} is
|
|
* validated for range in all three modes. If only the {@code YEAR_OF_ERA} is
|
|
* present, and the mode is smart or lenient, then the current era (CE/AD)
|
|
* is assumed. In strict mode, no era is assumed and the {@code YEAR_OF_ERA} is
|
|
* left untouched. If only the {@code ERA} is present, then it is left untouched.
|
|
* <li>{@code YEAR}, {@code MONTH_OF_YEAR} and {@code DAY_OF_MONTH} -
|
|
* If all three are present, then they are combined to form a {@code LocalDate}.
|
|
* In all three modes, the {@code YEAR} is validated. If the mode is smart or strict,
|
|
* then the month and day are validated, with the day validated from 1 to 31.
|
|
* If the mode is lenient, then the date is combined in a manner equivalent to
|
|
* creating a date on the first of January in the requested year, then adding
|
|
* the difference in months, then the difference in days.
|
|
* If the mode is smart, and the day-of-month is greater than the maximum for
|
|
* the year-month, then the day-of-month is adjusted to the last day-of-month.
|
|
* If the mode is strict, then the three fields must form a valid date.
|
|
* <li>{@code YEAR} and {@code DAY_OF_YEAR} -
|
|
* If both are present, then they are combined to form a {@code LocalDate}.
|
|
* In all three modes, the {@code YEAR} is validated.
|
|
* If the mode is lenient, then the date is combined in a manner equivalent to
|
|
* creating a date on the first of January in the requested year, then adding
|
|
* the difference in days.
|
|
* If the mode is smart or strict, then the two fields must form a valid date.
|
|
* <li>{@code YEAR}, {@code MONTH_OF_YEAR}, {@code ALIGNED_WEEK_OF_MONTH} and
|
|
* {@code ALIGNED_DAY_OF_WEEK_IN_MONTH} -
|
|
* If all four are present, then they are combined to form a {@code LocalDate}.
|
|
* In all three modes, the {@code YEAR} is validated.
|
|
* If the mode is lenient, then the date is combined in a manner equivalent to
|
|
* creating a date on the first of January in the requested year, then adding
|
|
* the difference in months, then the difference in weeks, then in days.
|
|
* If the mode is smart or strict, then the all four fields are validated to
|
|
* their outer ranges. The date is then combined in a manner equivalent to
|
|
* creating a date on the first day of the requested year and month, then adding
|
|
* the amount in weeks and days to reach their values. If the mode is strict,
|
|
* the date is additionally validated to check that the day and week adjustment
|
|
* did not change the month.
|
|
* <li>{@code YEAR}, {@code MONTH_OF_YEAR}, {@code ALIGNED_WEEK_OF_MONTH} and
|
|
* {@code DAY_OF_WEEK} - If all four are present, then they are combined to
|
|
* form a {@code LocalDate}. The approach is the same as described above for
|
|
* years, months and weeks in {@code ALIGNED_DAY_OF_WEEK_IN_MONTH}.
|
|
* The day-of-week is adjusted as the next or same matching day-of-week once
|
|
* the years, months and weeks have been handled.
|
|
* <li>{@code YEAR}, {@code ALIGNED_WEEK_OF_YEAR} and {@code ALIGNED_DAY_OF_WEEK_IN_YEAR} -
|
|
* If all three are present, then they are combined to form a {@code LocalDate}.
|
|
* In all three modes, the {@code YEAR} is validated.
|
|
* If the mode is lenient, then the date is combined in a manner equivalent to
|
|
* creating a date on the first of January in the requested year, then adding
|
|
* the difference in weeks, then in days.
|
|
* If the mode is smart or strict, then the all three fields are validated to
|
|
* their outer ranges. The date is then combined in a manner equivalent to
|
|
* creating a date on the first day of the requested year, then adding
|
|
* the amount in weeks and days to reach their values. If the mode is strict,
|
|
* the date is additionally validated to check that the day and week adjustment
|
|
* did not change the year.
|
|
* <li>{@code YEAR}, {@code ALIGNED_WEEK_OF_YEAR} and {@code DAY_OF_WEEK} -
|
|
* If all three are present, then they are combined to form a {@code LocalDate}.
|
|
* The approach is the same as described above for years and weeks in
|
|
* {@code ALIGNED_DAY_OF_WEEK_IN_YEAR}. The day-of-week is adjusted as the
|
|
* next or same matching day-of-week once the years and weeks have been handled.
|
|
* </ul>
|
|
*
|
|
* @param fieldValues the map of fields to values, which can be updated, not null
|
|
* @param resolverStyle the requested type of resolve, not null
|
|
* @return the resolved date, null if insufficient information to create a date
|
|
* @throws DateTimeException if the date cannot be resolved, typically
|
|
* because of a conflict in the input data
|
|
*/
|
|
@Override // override for performance
|
|
public LocalDate resolveDate(Map<TemporalField, Long> fieldValues, ResolverStyle resolverStyle) {
|
|
return (LocalDate) super.resolveDate(fieldValues, resolverStyle);
|
|
}
|
|
|
|
@Override // override for better proleptic algorithm
|
|
void resolveProlepticMonth(Map<TemporalField, Long> fieldValues, ResolverStyle resolverStyle) {
|
|
Long pMonth = fieldValues.remove(PROLEPTIC_MONTH);
|
|
if (pMonth != null) {
|
|
if (resolverStyle != ResolverStyle.LENIENT) {
|
|
PROLEPTIC_MONTH.checkValidValue(pMonth);
|
|
}
|
|
addFieldValue(fieldValues, MONTH_OF_YEAR, Math.floorMod(pMonth, 12) + 1);
|
|
addFieldValue(fieldValues, YEAR, Math.floorDiv(pMonth, 12));
|
|
}
|
|
}
|
|
|
|
@Override // override for enhanced behaviour
|
|
LocalDate resolveYearOfEra(Map<TemporalField, Long> fieldValues, ResolverStyle resolverStyle) {
|
|
Long yoeLong = fieldValues.remove(YEAR_OF_ERA);
|
|
if (yoeLong != null) {
|
|
if (resolverStyle != ResolverStyle.LENIENT) {
|
|
YEAR_OF_ERA.checkValidValue(yoeLong);
|
|
}
|
|
Long era = fieldValues.remove(ERA);
|
|
if (era == null) {
|
|
Long year = fieldValues.get(YEAR);
|
|
if (resolverStyle == ResolverStyle.STRICT) {
|
|
// do not invent era if strict, but do cross-check with year
|
|
if (year != null) {
|
|
addFieldValue(fieldValues, YEAR, (year > 0 ? yoeLong: Math.subtractExact(1, yoeLong)));
|
|
} else {
|
|
// reinstate the field removed earlier, no cross-check issues
|
|
fieldValues.put(YEAR_OF_ERA, yoeLong);
|
|
}
|
|
} else {
|
|
// invent era
|
|
addFieldValue(fieldValues, YEAR, (year == null || year > 0 ? yoeLong: Math.subtractExact(1, yoeLong)));
|
|
}
|
|
} else if (era.longValue() == 1L) {
|
|
addFieldValue(fieldValues, YEAR, yoeLong);
|
|
} else if (era.longValue() == 0L) {
|
|
addFieldValue(fieldValues, YEAR, Math.subtractExact(1, yoeLong));
|
|
} else {
|
|
throw new DateTimeException("Invalid value for era: " + era);
|
|
}
|
|
} else if (fieldValues.containsKey(ERA)) {
|
|
ERA.checkValidValue(fieldValues.get(ERA)); // always validated
|
|
}
|
|
return null;
|
|
}
|
|
|
|
@Override // override for performance
|
|
LocalDate resolveYMD(Map <TemporalField, Long> fieldValues, ResolverStyle resolverStyle) {
|
|
int y = YEAR.checkValidIntValue(fieldValues.remove(YEAR));
|
|
if (resolverStyle == ResolverStyle.LENIENT) {
|
|
long months = Math.subtractExact(fieldValues.remove(MONTH_OF_YEAR), 1);
|
|
long days = Math.subtractExact(fieldValues.remove(DAY_OF_MONTH), 1);
|
|
return LocalDate.of(y, 1, 1).plusMonths(months).plusDays(days);
|
|
}
|
|
int moy = MONTH_OF_YEAR.checkValidIntValue(fieldValues.remove(MONTH_OF_YEAR));
|
|
int dom = DAY_OF_MONTH.checkValidIntValue(fieldValues.remove(DAY_OF_MONTH));
|
|
if (resolverStyle == ResolverStyle.SMART) { // previous valid
|
|
if (moy == 4 || moy == 6 || moy == 9 || moy == 11) {
|
|
dom = Math.min(dom, 30);
|
|
} else if (moy == 2) {
|
|
dom = Math.min(dom, Month.FEBRUARY.length(Year.isLeap(y)));
|
|
|
|
}
|
|
}
|
|
return LocalDate.of(y, moy, dom);
|
|
}
|
|
|
|
//-----------------------------------------------------------------------
|
|
@Override
|
|
public ValueRange range(ChronoField field) {
|
|
return field.range();
|
|
}
|
|
|
|
//-----------------------------------------------------------------------
|
|
/**
|
|
* Obtains a period for this chronology based on years, months and days.
|
|
* <p>
|
|
* This returns a period tied to the ISO chronology using the specified
|
|
* years, months and days. See {@link Period} for further details.
|
|
*
|
|
* @param years the number of years, may be negative
|
|
* @param months the number of years, may be negative
|
|
* @param days the number of years, may be negative
|
|
* @return the ISO period, not null
|
|
*/
|
|
@Override // override with covariant return type
|
|
public Period period(int years, int months, int days) {
|
|
return Period.of(years, months, days);
|
|
}
|
|
|
|
//-----------------------------------------------------------------------
|
|
/**
|
|
* Writes the Chronology using a
|
|
* <a href="{@docRoot}/serialized-form.html#java.time.chrono.Ser">dedicated serialized form</a>.
|
|
* @serialData
|
|
* <pre>
|
|
* out.writeByte(1); // identifies a Chronology
|
|
* out.writeUTF(getId());
|
|
* </pre>
|
|
*
|
|
* @return the instance of {@code Ser}, not null
|
|
*/
|
|
@Override
|
|
@java.io.Serial
|
|
Object writeReplace() {
|
|
return super.writeReplace();
|
|
}
|
|
|
|
/**
|
|
* 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");
|
|
}
|
|
}
|