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/* * Copyright (c) 2012, 2018, 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 java.io.InvalidObjectException; import static java.time.temporal.ChronoField.PROLEPTIC_MONTH; import static java.time.temporal.ChronoField.YEAR; import java.io.ObjectInputStream; import java.io.Serializable; import java.time.Clock; import java.time.DateTimeException; import java.time.Instant; import java.time.LocalDate; import java.time.ZoneId; import java.time.format.ResolverStyle; import java.time.temporal.ChronoField; import java.time.temporal.TemporalAccessor; import java.time.temporal.TemporalField; import java.time.temporal.ValueRange; import java.util.Arrays; import java.util.HashMap; import java.util.List; import java.util.Locale; import java.util.Map; /** * The Thai Buddhist calendar system. * <p> * This chronology defines the rules of the Thai Buddhist calendar system. * This calendar system is primarily used in Thailand. * Dates are aligned such that {@code 2484-01-01 (Buddhist)} is {@code 1941-01-01 (ISO)}. * <p> * The fields are defined as follows: * <ul> * <li>era - There are two eras, the current 'Buddhist' (ERA_BE) and the previous era (ERA_BEFORE_BE). * <li>year-of-era - The year-of-era for the current era increases uniformly from the epoch at year one. * For the previous era the year increases from one as time goes backwards. * The value for the current era is equal to the ISO proleptic-year plus 543. * <li>proleptic-year - The proleptic year is the same as the year-of-era for the * current era. For the previous era, years have zero, then negative values. * The value is equal to the ISO proleptic-year plus 543. * <li>month-of-year - The ThaiBuddhist month-of-year exactly matches ISO. * <li>day-of-month - The ThaiBuddhist day-of-month exactly matches ISO. * <li>day-of-year - The ThaiBuddhist day-of-year exactly matches ISO. * <li>leap-year - The ThaiBuddhist leap-year pattern exactly matches ISO, such that the two calendars * are never out of step. * </ul> * * @implSpec * This class is immutable and thread-safe. * * @since 1.8 */ public final class ThaiBuddhistChronology extends AbstractChronology implements Serializable { /** * Singleton instance of the Buddhist chronology. */ public static final ThaiBuddhistChronology INSTANCE = new ThaiBuddhistChronology(); /** * Serialization version. */ private static final long serialVersionUID = 2775954514031616474L; /** * Containing the offset to add to the ISO year. */ static final int YEARS_DIFFERENCE = 543; /** * Narrow names for eras. */ private static final HashMap<String, String[]> ERA_NARROW_NAMES = new HashMap<>(); /** * Short names for eras. */ private static final HashMap<String, String[]> ERA_SHORT_NAMES = new HashMap<>(); /** * Full names for eras. */ private static final HashMap<String, String[]> ERA_FULL_NAMES = new HashMap<>(); /** * Fallback language for the era names. */ private static final String FALLBACK_LANGUAGE = "en"; /** * Language that has the era names. */ private static final String TARGET_LANGUAGE = "th"; /** * Name data. */ static { ERA_NARROW_NAMES.put(FALLBACK_LANGUAGE, new String[] { "BB", "BE" }); ERA_NARROW_NAMES.put(TARGET_LANGUAGE, new String[] { "BB", "BE" }); ERA_SHORT_NAMES.put(FALLBACK_LANGUAGE, new String[] { "B.B.", "B.E." }); ERA_SHORT_NAMES.put(TARGET_LANGUAGE, new String[] { "\u0e1e.\u0e28.", "\u0e1b\u0e35\u0e01\u0e48\u0e2d\u0e19\u0e04\u0e23\u0e34\u0e2a\u0e15\u0e4c\u0e01\u0e32\u0e25\u0e17\u0e35\u0e48" }); ERA_FULL_NAMES.put(FALLBACK_LANGUAGE, new String[] { "Before Buddhist", "Budhhist Era" }); ERA_FULL_NAMES.put(TARGET_LANGUAGE, new String[] { "\u0e1e\u0e38\u0e17\u0e18\u0e28\u0e31\u0e01\u0e23\u0e32\u0e0a", "\u0e1b\u0e35\u0e01\u0e48\u0e2d\u0e19\u0e04\u0e23\u0e34\u0e2a\u0e15\u0e4c\u0e01\u0e32\u0e25\u0e17\u0e35\u0e48" }); } /** * Restricted constructor. */ private ThaiBuddhistChronology() { } //----------------------------------------------------------------------- /** * Gets the ID of the chronology - 'ThaiBuddhist'. * <p> * The ID uniquely identifies the {@code Chronology}. * It can be used to lookup the {@code Chronology} using {@link Chronology#of(String)}. * * @return the chronology ID - 'ThaiBuddhist' * @see #getCalendarType() */ @Override public String getId() { return "ThaiBuddhist"; } /** * Gets the calendar type of the underlying calendar system - 'buddhist'. * <p> * The calendar type is an identifier defined by the * <em>Unicode Locale Data Markup Language (LDML)</em> specification. * It can be used to lookup the {@code Chronology} using {@link Chronology#of(String)}. * It can also be used as part of a locale, accessible via * {@link Locale#getUnicodeLocaleType(String)} with the key 'ca'. * * @return the calendar system type - 'buddhist' * @see #getId() */ @Override public String getCalendarType() { return "buddhist"; } //----------------------------------------------------------------------- /** * Obtains a local date in Thai Buddhist calendar system from the * era, year-of-era, month-of-year and day-of-month fields. * * @param era the Thai Buddhist era, not null * @param yearOfEra the year-of-era * @param month the month-of-year * @param dayOfMonth the day-of-month * @return the Thai Buddhist local date, not null * @throws DateTimeException if unable to create the date * @throws ClassCastException if the {@code era} is not a {@code ThaiBuddhistEra} */ @Override public ThaiBuddhistDate date(Era era, int yearOfEra, int month, int dayOfMonth) { return date(prolepticYear(era, yearOfEra), month, dayOfMonth); } /** * Obtains a local date in Thai Buddhist calendar system from the * proleptic-year, month-of-year and day-of-month fields. * * @param prolepticYear the proleptic-year * @param month the month-of-year * @param dayOfMonth the day-of-month * @return the Thai Buddhist local date, not null * @throws DateTimeException if unable to create the date */ @Override public ThaiBuddhistDate date(int prolepticYear, int month, int dayOfMonth) { return new ThaiBuddhistDate(LocalDate.of(prolepticYear - YEARS_DIFFERENCE, month, dayOfMonth)); } /** * Obtains a local date in Thai Buddhist calendar system from the * era, year-of-era and day-of-year fields. * * @param era the Thai Buddhist era, not null * @param yearOfEra the year-of-era * @param dayOfYear the day-of-year * @return the Thai Buddhist local date, not null * @throws DateTimeException if unable to create the date * @throws ClassCastException if the {@code era} is not a {@code ThaiBuddhistEra} */ @Override public ThaiBuddhistDate dateYearDay(Era era, int yearOfEra, int dayOfYear) { return dateYearDay(prolepticYear(era, yearOfEra), dayOfYear); } /** * Obtains a local date in Thai Buddhist calendar system from the * proleptic-year and day-of-year fields. * * @param prolepticYear the proleptic-year * @param dayOfYear the day-of-year * @return the Thai Buddhist local date, not null * @throws DateTimeException if unable to create the date */ @Override public ThaiBuddhistDate dateYearDay(int prolepticYear, int dayOfYear) { return new ThaiBuddhistDate(LocalDate.ofYearDay(prolepticYear - YEARS_DIFFERENCE, dayOfYear)); } /** * Obtains a local date in the Thai Buddhist calendar system from the epoch-day. * * @param epochDay the epoch day * @return the Thai Buddhist local date, not null * @throws DateTimeException if unable to create the date */ @Override // override with covariant return type public ThaiBuddhistDate dateEpochDay(long epochDay) { return new ThaiBuddhistDate(LocalDate.ofEpochDay(epochDay)); } @Override public ThaiBuddhistDate dateNow() { return dateNow(Clock.systemDefaultZone()); } @Override public ThaiBuddhistDate dateNow(ZoneId zone) { return dateNow(Clock.system(zone)); } @Override public ThaiBuddhistDate dateNow(Clock clock) { return date(LocalDate.now(clock)); } @Override public ThaiBuddhistDate date(TemporalAccessor temporal) { if (temporal instanceof ThaiBuddhistDate) { return (ThaiBuddhistDate) temporal; } return new ThaiBuddhistDate(LocalDate.from(temporal)); } @Override @SuppressWarnings("unchecked") public ChronoLocalDateTime<ThaiBuddhistDate> localDateTime(TemporalAccessor temporal) { return (ChronoLocalDateTime<ThaiBuddhistDate>) super.localDateTime(temporal); } @Override @SuppressWarnings("unchecked") public ChronoZonedDateTime<ThaiBuddhistDate> zonedDateTime(TemporalAccessor temporal) { return (ChronoZonedDateTime<ThaiBuddhistDate>) super.zonedDateTime(temporal); } @Override @SuppressWarnings("unchecked") public ChronoZonedDateTime<ThaiBuddhistDate> zonedDateTime(Instant instant, ZoneId zone) { return (ChronoZonedDateTime<ThaiBuddhistDate>) super.zonedDateTime(instant, zone); } //----------------------------------------------------------------------- /** * Checks if the specified year is a leap year. * <p> * Thai Buddhist leap years occur exactly in line with ISO leap years. * This method does not validate the year passed in, and only has a * well-defined result for years in the supported range. * * @param prolepticYear the proleptic-year to check, not validated for range * @return true if the year is a leap year */ @Override public boolean isLeapYear(long prolepticYear) { return IsoChronology.INSTANCE.isLeapYear(prolepticYear - YEARS_DIFFERENCE); } @Override public int prolepticYear(Era era, int yearOfEra) { if (era instanceof ThaiBuddhistEra == false) { throw new ClassCastException("Era must be BuddhistEra"); } return (era == ThaiBuddhistEra.BE ? yearOfEra : 1 - yearOfEra); } @Override public ThaiBuddhistEra eraOf(int eraValue) { return ThaiBuddhistEra.of(eraValue); } @Override public List<Era> eras() { return List.of(ThaiBuddhistEra.values()); } //----------------------------------------------------------------------- @Override public ValueRange range(ChronoField field) { switch (field) { case PROLEPTIC_MONTH: { ValueRange range = PROLEPTIC_MONTH.range(); return ValueRange.of(range.getMinimum() + YEARS_DIFFERENCE * 12L, range.getMaximum() + YEARS_DIFFERENCE * 12L); } case YEAR_OF_ERA: { ValueRange range = YEAR.range(); return ValueRange.of(1, -(range.getMinimum() + YEARS_DIFFERENCE) + 1, range.getMaximum() + YEARS_DIFFERENCE); } case YEAR: { ValueRange range = YEAR.range(); return ValueRange.of(range.getMinimum() + YEARS_DIFFERENCE, range.getMaximum() + YEARS_DIFFERENCE); } } return field.range(); } //----------------------------------------------------------------------- @Override // override for return type public ThaiBuddhistDate resolveDate(Map<TemporalField, Long> fieldValues, ResolverStyle resolverStyle) { return (ThaiBuddhistDate) super.resolveDate(fieldValues, resolverStyle); } //----------------------------------------------------------------------- /** * 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 Object writeReplace() { return super.writeReplace(); } /** * 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"); } }