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/*
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* Copyright (c) 2012, 2013, 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.temporal.ChronoField.PROLEPTIC_MONTH;
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import static java.time.temporal.ChronoField.YEAR;
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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.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.ValueRange;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Locale;
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/**
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* The Thai Buddhist calendar system.
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* <p>
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* This chronology defines the rules of the Thai Buddhist calendar system.
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* This calendar system is primarily used in Thailand.
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* Dates are aligned such that {@code 2484-01-01 (Buddhist)} is {@code 1941-01-01 (ISO)}.
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* <p>
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* The fields are defined as follows:
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* <p><ul>
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* <li>era - There are two eras, the current 'Buddhist' (ERA_BE) and the previous era (ERA_BEFORE_BE).
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* <li>year-of-era - The year-of-era for the current era increases uniformly from the epoch at year one.
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* For the previous era the year increases from one as time goes backwards.
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* The value for the current era is equal to the ISO proleptic-year plus 543.
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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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* The value is equal to the ISO proleptic-year plus 543.
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* <li>month-of-year - The ThaiBuddhist month-of-year exactly matches ISO.
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* <li>day-of-month - The ThaiBuddhist day-of-month exactly matches ISO.
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* <li>day-of-year - The ThaiBuddhist day-of-year exactly matches ISO.
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* <li>leap-year - The ThaiBuddhist leap-year pattern exactly matches ISO, such that the two calendars
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* are never out of step.
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* </ul><p>
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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 ThaiBuddhistChronology extends Chronology implements Serializable {
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/**
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* Singleton instance of the Buddhist chronology.
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*/
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public static final ThaiBuddhistChronology INSTANCE = new ThaiBuddhistChronology();
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/**
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* Serialization version.
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*/
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private static final long serialVersionUID = 2775954514031616474L;
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/**
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* Containing the offset to add to the ISO year.
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*/
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static final int YEARS_DIFFERENCE = 543;
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/**
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* Narrow names for eras.
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*/
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private static final HashMap<String, String[]> ERA_NARROW_NAMES = new HashMap<>();
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/**
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* Short names for eras.
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*/
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private static final HashMap<String, String[]> ERA_SHORT_NAMES = new HashMap<>();
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/**
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* Full names for eras.
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*/
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private static final HashMap<String, String[]> ERA_FULL_NAMES = new HashMap<>();
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/**
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* Fallback language for the era names.
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*/
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private static final String FALLBACK_LANGUAGE = "en";
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/**
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* Language that has the era names.
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*/
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private static final String TARGET_LANGUAGE = "th";
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/**
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* Name data.
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*/
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static {
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ERA_NARROW_NAMES.put(FALLBACK_LANGUAGE, new String[]{"BB", "BE"});
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ERA_NARROW_NAMES.put(TARGET_LANGUAGE, new String[]{"BB", "BE"});
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ERA_SHORT_NAMES.put(FALLBACK_LANGUAGE, new String[]{"B.B.", "B.E."});
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ERA_SHORT_NAMES.put(TARGET_LANGUAGE,
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new String[]{"\u0e1e.\u0e28.",
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"\u0e1b\u0e35\u0e01\u0e48\u0e2d\u0e19\u0e04\u0e23\u0e34\u0e2a\u0e15\u0e4c\u0e01\u0e32\u0e25\u0e17\u0e35\u0e48"});
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ERA_FULL_NAMES.put(FALLBACK_LANGUAGE, new String[]{"Before Buddhist", "Budhhist Era"});
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ERA_FULL_NAMES.put(TARGET_LANGUAGE,
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new String[]{"\u0e1e\u0e38\u0e17\u0e18\u0e28\u0e31\u0e01\u0e23\u0e32\u0e0a",
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"\u0e1b\u0e35\u0e01\u0e48\u0e2d\u0e19\u0e04\u0e23\u0e34\u0e2a\u0e15\u0e4c\u0e01\u0e32\u0e25\u0e17\u0e35\u0e48"});
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}
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/**
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* Restricted constructor.
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*/
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private ThaiBuddhistChronology() {
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}
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//-----------------------------------------------------------------------
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/**
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* Gets the ID of the chronology - 'ThaiBuddhist'.
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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 #of(String)}.
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*
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* @return the chronology ID - 'ThaiBuddhist'
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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 "ThaiBuddhist";
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}
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/**
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* Gets the calendar type of the underlying calendar system - 'buddhist'.
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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 #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 - 'buddhist'
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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 "buddhist";
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}
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//-----------------------------------------------------------------------
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/**
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* Obtains a local date in Thai Buddhist calendar system from the
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* era, year-of-era, month-of-year and day-of-month fields.
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*
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* @param era the Thai Buddhist era, not null
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* @param yearOfEra the year-of-era
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* @param month the month-of-year
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* @param dayOfMonth the day-of-month
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* @return the Thai Buddhist local date, not null
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* @throws DateTimeException if unable to create the date
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* @throws ClassCastException if the {@code era} is not a {@code ThaiBuddhistEra}
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*/
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@Override
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public ThaiBuddhistDate 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 a local date in Thai Buddhist calendar system from the
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* proleptic-year, month-of-year and day-of-month fields.
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*
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* @param prolepticYear the proleptic-year
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* @param month the month-of-year
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* @param dayOfMonth the day-of-month
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* @return the Thai Buddhist 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
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public ThaiBuddhistDate date(int prolepticYear, int month, int dayOfMonth) {
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return new ThaiBuddhistDate(LocalDate.of(prolepticYear - YEARS_DIFFERENCE, month, dayOfMonth));
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}
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/**
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* Obtains a local date in Thai Buddhist calendar system from the
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* era, year-of-era and day-of-year fields.
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*
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* @param era the Thai Buddhist era, not null
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* @param yearOfEra the year-of-era
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* @param dayOfYear the day-of-year
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* @return the Thai Buddhist local date, not null
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* @throws DateTimeException if unable to create the date
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* @throws ClassCastException if the {@code era} is not a {@code ThaiBuddhistEra}
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*/
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@Override
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public ThaiBuddhistDate 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 a local date in Thai Buddhist calendar system from the
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* proleptic-year and day-of-year fields.
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*
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* @param prolepticYear the proleptic-year
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* @param dayOfYear the day-of-year
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* @return the Thai Buddhist 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
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public ThaiBuddhistDate dateYearDay(int prolepticYear, int dayOfYear) {
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return new ThaiBuddhistDate(LocalDate.ofYearDay(prolepticYear - YEARS_DIFFERENCE, dayOfYear));
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}
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/**
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* Obtains a local date in the Thai Buddhist calendar system from the epoch-day.
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*
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* @param epochDay the epoch day
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* @return the Thai Buddhist 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 ThaiBuddhistDate dateEpochDay(long epochDay) {
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return new ThaiBuddhistDate(LocalDate.ofEpochDay(epochDay));
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}
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@Override
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public ThaiBuddhistDate dateNow() {
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return dateNow(Clock.systemDefaultZone());
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}
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@Override
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public ThaiBuddhistDate dateNow(ZoneId zone) {
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return dateNow(Clock.system(zone));
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}
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@Override
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public ThaiBuddhistDate dateNow(Clock clock) {
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return date(LocalDate.now(clock));
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}
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@Override
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public ThaiBuddhistDate date(TemporalAccessor temporal) {
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if (temporal instanceof ThaiBuddhistDate) {
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return (ThaiBuddhistDate) temporal;
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}
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return new ThaiBuddhistDate(LocalDate.from(temporal));
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}
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@Override
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public ChronoLocalDateTime<ThaiBuddhistDate> localDateTime(TemporalAccessor temporal) {
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return (ChronoLocalDateTime<ThaiBuddhistDate>)super.localDateTime(temporal);
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}
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@Override
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public ChronoZonedDateTime<ThaiBuddhistDate> zonedDateTime(TemporalAccessor temporal) {
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return (ChronoZonedDateTime<ThaiBuddhistDate>)super.zonedDateTime(temporal);
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}
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@Override
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public ChronoZonedDateTime<ThaiBuddhistDate> zonedDateTime(Instant instant, ZoneId zone) {
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return (ChronoZonedDateTime<ThaiBuddhistDate>)super.zonedDateTime(instant, zone);
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}
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//-----------------------------------------------------------------------
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/**
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* Checks if the specified year is a leap year.
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* <p>
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* Thai Buddhist leap years occur exactly in line with ISO leap years.
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* This method does not validate the year passed in, and only has a
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* well-defined result for years in the supported range.
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*
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* @param prolepticYear the proleptic-year to check, not validated for range
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* @return true if the year is a leap year
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*/
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@Override
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public boolean isLeapYear(long prolepticYear) {
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return IsoChronology.INSTANCE.isLeapYear(prolepticYear - YEARS_DIFFERENCE);
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}
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@Override
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public int prolepticYear(Era era, int yearOfEra) {
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if (era instanceof ThaiBuddhistEra == false) {
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throw new ClassCastException("Era must be BuddhistEra");
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}
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return (era == ThaiBuddhistEra.BE ? yearOfEra : 1 - yearOfEra);
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}
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@Override
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public Era eraOf(int eraValue) {
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return ThaiBuddhistEra.of(eraValue);
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}
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@Override
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public List<Era> eras() {
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return Arrays.<Era>asList(ThaiBuddhistEra.values());
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}
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//-----------------------------------------------------------------------
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@Override
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public ValueRange range(ChronoField field) {
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switch (field) {
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case PROLEPTIC_MONTH: {
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ValueRange range = PROLEPTIC_MONTH.range();
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return ValueRange.of(range.getMinimum() + YEARS_DIFFERENCE * 12L, range.getMaximum() + YEARS_DIFFERENCE * 12L);
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}
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case YEAR_OF_ERA: {
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ValueRange range = YEAR.range();
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return ValueRange.of(1, -(range.getMinimum() + YEARS_DIFFERENCE) + 1, range.getMaximum() + YEARS_DIFFERENCE);
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}
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case YEAR: {
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ValueRange range = YEAR.range();
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return ValueRange.of(range.getMinimum() + YEARS_DIFFERENCE, range.getMaximum() + YEARS_DIFFERENCE);
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}
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}
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return field.range();
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}
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}
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