| /* |
| * Copyright (c) 2012, 2017, 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. |
| */ |
| |
| /* |
| * This file is available under and governed by the GNU General Public |
| * License version 2 only, as published by the Free Software Foundation. |
| * However, the following notice accompanied the original version of this |
| * file: |
| * |
| * Copyright (c) 2012, Stephen Colebourne & Michael Nascimento Santos |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * * Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * |
| * * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * * Neither the name of JSR-310 nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| package java.time.chrono; |
| |
| import static java.time.temporal.ChronoField.ERA; |
| |
| import java.time.DateTimeException; |
| import java.time.format.DateTimeFormatterBuilder; |
| import java.time.format.TextStyle; |
| import java.util.Locale; |
| |
| /** |
| * An era in the Thai Buddhist calendar system. |
| * <p> |
| * The Thai Buddhist calendar system has two eras. |
| * The current era, for years from 1 onwards, is known as the 'Buddhist' era. |
| * All previous years, zero or earlier in the proleptic count or one and greater |
| * in the year-of-era count, are part of the 'Before Buddhist' era. |
| * |
| * <table class="striped" style="text-align:left"> |
| * <caption style="display:none">Buddhist years and eras</caption> |
| * <thead> |
| * <tr> |
| * <th scope="col">year-of-era</th> |
| * <th scope="col">era</th> |
| * <th scope="col">proleptic-year</th> |
| * <th scope="col">ISO proleptic-year</th> |
| * </tr> |
| * </thead> |
| * <tbody> |
| * <tr> |
| * <td>2</td><td>BE</td><th scope="row">2</th><td>-542</td> |
| * </tr> |
| * <tr> |
| * <td>1</td><td>BE</td><th scope="row">1</th><td>-543</td> |
| * </tr> |
| * <tr> |
| * <td>1</td><td>BEFORE_BE</td><th scope="row">0</th><td>-544</td> |
| * </tr> |
| * <tr> |
| * <td>2</td><td>BEFORE_BE</td><th scope="row">-1</th><td>-545</td> |
| * </tr> |
| * </tbody> |
| * </table> |
| * <p> |
| * <b>Do not use {@code ordinal()} to obtain the numeric representation of {@code ThaiBuddhistEra}. |
| * Use {@code getValue()} instead.</b> |
| * |
| * @implSpec |
| * This is an immutable and thread-safe enum. |
| * |
| * @since 1.8 |
| */ |
| public enum ThaiBuddhistEra implements Era { |
| |
| /** |
| * The singleton instance for the era before the current one, 'Before Buddhist Era', |
| * which has the numeric value 0. |
| */ |
| BEFORE_BE, |
| /** |
| * The singleton instance for the current era, 'Buddhist Era', |
| * which has the numeric value 1. |
| */ |
| BE; |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Obtains an instance of {@code ThaiBuddhistEra} from an {@code int} value. |
| * <p> |
| * {@code ThaiBuddhistEra} is an enum representing the Thai Buddhist eras of BEFORE_BE/BE. |
| * This factory allows the enum to be obtained from the {@code int} value. |
| * |
| * @param thaiBuddhistEra the era to represent, from 0 to 1 |
| * @return the BuddhistEra singleton, never null |
| * @throws DateTimeException if the era is invalid |
| */ |
| public static ThaiBuddhistEra of(int thaiBuddhistEra) { |
| switch (thaiBuddhistEra) { |
| case 0: |
| return BEFORE_BE; |
| case 1: |
| return BE; |
| default: |
| throw new DateTimeException("Invalid era: " + thaiBuddhistEra); |
| } |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Gets the numeric era {@code int} value. |
| * <p> |
| * The era BEFORE_BE has the value 0, while the era BE has the value 1. |
| * |
| * @return the era value, from 0 (BEFORE_BE) to 1 (BE) |
| */ |
| @Override |
| public int getValue() { |
| return ordinal(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @param style {@inheritDoc} |
| * @param locale {@inheritDoc} |
| */ |
| @Override |
| public String getDisplayName(TextStyle style, Locale locale) { |
| return new DateTimeFormatterBuilder() |
| .appendText(ERA, style) |
| .toFormatter(locale) |
| .withChronology(ThaiBuddhistChronology.INSTANCE) |
| .format(this == BE ? ThaiBuddhistDate.of(1, 1, 1) : ThaiBuddhistDate.of(0, 1, 1)); |
| } |
| |
| } |