1 /* 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. Oracle designates this 7 * particular file as subject to the "Classpath" exception as provided 8 * by Oracle in the LICENSE file that accompanied this code. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 */ 24 25 /* 26 * Copyright (c) 2012, Stephen Colebourne & Michael Nascimento Santos 27 * 28 * All rights reserved. 29 * 30 * Redistribution and use in source and binary forms, with or without 31 * modification, are permitted provided that the following conditions are met: 32 * 33 * * Redistributions of source code must retain the above copyright notice, 34 * this list of conditions and the following disclaimer. 35 * 36 * * Redistributions in binary form must reproduce the above copyright notice, 37 * this list of conditions and the following disclaimer in the documentation 38 * and/or other materials provided with the distribution. 39 * 40 * * Neither the name of JSR-310 nor the names of its contributors 41 * may be used to endorse or promote products derived from this software 42 * without specific prior written permission. 43 * 44 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 45 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 46 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 47 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 48 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 49 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 50 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 51 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 52 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 53 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 54 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 package tck.java.time.chrono; 58 59 import static java.time.temporal.ChronoField.EPOCH_DAY; 60 61 import java.io.Serializable; 62 import java.time.chrono.AbstractChronology; 63 import java.time.chrono.Era; 64 import java.time.temporal.ChronoField; 65 import java.time.temporal.TemporalAccessor; 66 import java.time.temporal.ValueRange; 67 import java.util.Arrays; 68 import java.util.List; 69 import java.util.Locale; 70 71 /** 72 * The Coptic calendar system. 73 * <p> 74 * This chronology defines the rules of the Coptic calendar system. 75 * This calendar system is primarily used in Christian Egypt. 76 * Dates are aligned such that {@code 0001AM-01-01 (Coptic)} is {@code 0284-08-29 (ISO)}. 77 * <p> 78 * The fields are defined as follows: 79 * <p><ul> 80 * <li>era - There are two eras, the current 'Era of the Martyrs' (AM) and the previous era (ERA_ERA_BEFORE_AM). 81 * <li>year-of-era - The year-of-era for the current era increases uniformly from the epoch at year one. 82 * For the previous era the year increases from one as time goes backwards. 83 * <li>proleptic-year - The proleptic year is the same as the year-of-era for the 84 * current era. For the previous era, years have zero, then negative values. 85 * <li>month-of-year - There are 13 months in a Coptic year, numbered from 1 to 13. 86 * <li>day-of-month - There are 30 days in each of the first 12 Coptic months, numbered 1 to 30. 87 * The 13th month has 5 days, or 6 in a leap year, numbered 1 to 5 or 1 to 6. 88 * <li>day-of-year - There are 365 days in a standard Coptic year and 366 in a leap year. 89 * The days are numbered from 1 to 365 or 1 to 366. 90 * <li>leap-year - Leap years occur every 4 years. 91 * </ul><p> 92 * 93 * <h4>Implementation notes</h4> 94 * This class is immutable and thread-safe. 95 */ 96 public final class CopticChronology extends AbstractChronology implements Serializable { 97 98 /** 99 * Singleton instance of the Coptic chronology. 100 */ 101 public static final CopticChronology INSTANCE = new CopticChronology(); 102 103 /** 104 * Serialization version. 105 */ 106 private static final long serialVersionUID = 7291205177830286973L; 107 /** 108 * Range of months. 109 */ 110 static final ValueRange MOY_RANGE = ValueRange.of(1, 13); 111 /** 112 * Range of days. 113 */ 114 static final ValueRange DOM_RANGE = ValueRange.of(1, 5, 30); 115 /** 116 * Range of days. 117 */ 118 static final ValueRange DOM_RANGE_NONLEAP = ValueRange.of(1, 5); 119 /** 120 * Range of days. 121 */ 122 static final ValueRange DOM_RANGE_LEAP = ValueRange.of(1, 6); 123 124 /** 125 * Public Constructor to be instantiated by the ServiceLoader 126 */ 127 public CopticChronology() { 128 } 129 130 /** 131 * Resolve singleton. 132 * 133 * @return the singleton instance, not null 134 */ 135 private Object readResolve() { 136 return INSTANCE; 137 } 138 139 //----------------------------------------------------------------------- 140 /** 141 * Gets the ID of the chronology - 'Coptic'. 142 * <p> 143 * The ID uniquely identifies the {@code Chronology}. 144 * It can be used to lookup the {@code Chronology} using {@link #of(String)}. 145 * 146 * @return the chronology ID - 'Coptic' 147 * @see #getCalendarType() 148 */ 149 @Override 150 public String getId() { 151 return "Coptic"; 152 } 153 154 /** 155 * Gets the calendar type of the underlying calendar system - 'coptic'. 156 * <p> 157 * The calendar type is an identifier defined by the 158 * <em>Unicode Locale Data Markup Language (LDML)</em> specification. 159 * It can be used to lookup the {@code Chronology} using {@link #of(String)}. 160 * It can also be used as part of a locale, accessible via 161 * {@link Locale#getUnicodeLocaleType(String)} with the key 'ca'. 162 * 163 * @return the calendar system type - 'coptic' 164 * @see #getId() 165 */ 166 @Override 167 public String getCalendarType() { 168 return "coptic"; 169 } 170 171 //----------------------------------------------------------------------- 172 @Override 173 public CopticDate date(int prolepticYear, int month, int dayOfMonth) { 174 return new CopticDate(prolepticYear, month, dayOfMonth); 175 } 176 177 @Override 178 public CopticDate dateYearDay(int prolepticYear, int dayOfYear) { 179 return new CopticDate(prolepticYear, (dayOfYear - 1) / 30 + 1, (dayOfYear - 1) % 30 + 1); 180 } 181 182 @Override 183 public CopticDate dateEpochDay(long epochDay) { 184 return CopticDate.ofEpochDay(epochDay); 185 } 186 187 @Override 188 public CopticDate date(TemporalAccessor dateTime) { 189 if (dateTime instanceof CopticDate) { 190 return (CopticDate) dateTime; 191 } 192 return CopticDate.ofEpochDay(dateTime.getLong(EPOCH_DAY)); 193 } 194 195 //----------------------------------------------------------------------- 196 /** 197 * Checks if the specified year is a leap year. 198 * <p> 199 * A Coptic proleptic-year is leap if the remainder after division by four equals three. 200 * This method does not validate the year passed in, and only has a 201 * well-defined result for years in the supported range. 202 * 203 * @param prolepticYear the proleptic-year to check, not validated for range 204 * @return true if the year is a leap year 205 */ 206 @Override 207 public boolean isLeapYear(long prolepticYear) { 208 return Math.floorMod(prolepticYear, 4) == 3; 209 } 210 211 @Override 212 public int prolepticYear(Era era, int yearOfEra) { 213 if (era instanceof CopticEra == false) { 214 throw new ClassCastException("Era must be CopticEra"); 215 } 216 return (era == CopticEra.AM ? yearOfEra : 1 - yearOfEra); 217 } 218 219 @Override 220 public Era eraOf(int eraValue) { 221 return CopticEra.of(eraValue); 222 } 223 224 @Override 225 public List<Era> eras() { 226 return Arrays.<Era>asList(CopticEra.values()); 227 } 228 229 //----------------------------------------------------------------------- 230 @Override 231 public ValueRange range(ChronoField field) { 232 switch (field) { 233 case DAY_OF_MONTH: return ValueRange.of(1, 5, 30); 234 case ALIGNED_WEEK_OF_MONTH: return ValueRange.of(1, 1, 5); 235 case MONTH_OF_YEAR: return ValueRange.of(1, 13); 236 case PROLEPTIC_MONTH: return ValueRange.of(-1000, 1000); // TODO 237 case YEAR_OF_ERA: return ValueRange.of(1, 999, 1000); // TODO 238 case YEAR: return ValueRange.of(-1000, 1000); // TODO 239 } 240 return field.range(); 241 } 242 243 } 244
