--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/java/time/chrono/AbstractChronology.java Tue Jul 09 21:35:04 2013 +0100
@@ -0,0 +1,783 @@
+/*
+ * Copyright (c) 2012, 2013, 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.ALIGNED_DAY_OF_WEEK_IN_MONTH;
+import static java.time.temporal.ChronoField.ALIGNED_DAY_OF_WEEK_IN_YEAR;
+import static java.time.temporal.ChronoField.ALIGNED_WEEK_OF_MONTH;
+import static java.time.temporal.ChronoField.ALIGNED_WEEK_OF_YEAR;
+import static java.time.temporal.ChronoField.DAY_OF_MONTH;
+import static java.time.temporal.ChronoField.DAY_OF_WEEK;
+import static java.time.temporal.ChronoField.DAY_OF_YEAR;
+import static java.time.temporal.ChronoField.EPOCH_DAY;
+import static java.time.temporal.ChronoField.ERA;
+import static java.time.temporal.ChronoField.MONTH_OF_YEAR;
+import static java.time.temporal.ChronoField.PROLEPTIC_MONTH;
+import static java.time.temporal.ChronoField.YEAR;
+import static java.time.temporal.ChronoField.YEAR_OF_ERA;
+import static java.time.temporal.ChronoUnit.DAYS;
+import static java.time.temporal.ChronoUnit.MONTHS;
+import static java.time.temporal.ChronoUnit.WEEKS;
+import static java.time.temporal.TemporalAdjuster.nextOrSame;
+
+import java.io.DataInput;
+import java.io.DataOutput;
+import java.io.IOException;
+import java.io.InvalidObjectException;
+import java.io.ObjectStreamException;
+import java.io.Serializable;
+import java.time.DateTimeException;
+import java.time.DayOfWeek;
+import java.time.format.ResolverStyle;
+import java.time.temporal.ChronoField;
+import java.time.temporal.TemporalAdjuster;
+import java.time.temporal.TemporalField;
+import java.time.temporal.ValueRange;
+import java.util.Comparator;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Objects;
+import java.util.ServiceLoader;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import sun.util.logging.PlatformLogger;
+
+/**
+ * An abstract implementation of a calendar system, used to organize and identify dates.
+ * <p>
+ * The main date and time API is built on the ISO calendar system.
+ * The chronology operates behind the scenes to represent the general concept of a calendar system.
+ * <p>
+ * See {@link Chronology} for more details.
+ *
+ * @implSpec
+ * This class is separated from the {@code Chronology} interface so that the static methods
+ * are not inherited. While {@code Chronology} can be implemented directly, it is strongly
+ * recommended to extend this abstract class instead.
+ * <p>
+ * This class must be implemented with care to ensure other classes operate correctly.
+ * All implementations that can be instantiated must be final, immutable and thread-safe.
+ * Subclasses should be Serializable wherever possible.
+ *
+ * @since 1.8
+ */
+public abstract class AbstractChronology implements Chronology {
+
+ /**
+ * ChronoLocalDate order constant.
+ */
+ static final Comparator<ChronoLocalDate> DATE_ORDER =
+ (Comparator<ChronoLocalDate> & Serializable) (date1, date2) -> {
+ return Long.compare(date1.toEpochDay(), date2.toEpochDay());
+ };
+ /**
+ * ChronoLocalDateTime order constant.
+ */
+ static final Comparator<ChronoLocalDateTime<? extends ChronoLocalDate>> DATE_TIME_ORDER =
+ (Comparator<ChronoLocalDateTime<? extends ChronoLocalDate>> & Serializable) (dateTime1, dateTime2) -> {
+ int cmp = Long.compare(dateTime1.toLocalDate().toEpochDay(), dateTime2.toLocalDate().toEpochDay());
+ if (cmp == 0) {
+ cmp = Long.compare(dateTime1.toLocalTime().toNanoOfDay(), dateTime2.toLocalTime().toNanoOfDay());
+ }
+ return cmp;
+ };
+ /**
+ * ChronoZonedDateTime order constant.
+ */
+ static final Comparator<ChronoZonedDateTime<?>> INSTANT_ORDER =
+ (Comparator<ChronoZonedDateTime<?>> & Serializable) (dateTime1, dateTime2) -> {
+ int cmp = Long.compare(dateTime1.toEpochSecond(), dateTime2.toEpochSecond());
+ if (cmp == 0) {
+ cmp = Long.compare(dateTime1.toLocalTime().getNano(), dateTime2.toLocalTime().getNano());
+ }
+ return cmp;
+ };
+
+ /**
+ * Map of available calendars by ID.
+ */
+ private static final ConcurrentHashMap<String, Chronology> CHRONOS_BY_ID = new ConcurrentHashMap<>();
+ /**
+ * Map of available calendars by calendar type.
+ */
+ private static final ConcurrentHashMap<String, Chronology> CHRONOS_BY_TYPE = new ConcurrentHashMap<>();
+
+ /**
+ * Register a Chronology by its ID and type for lookup by {@link #of(String)}.
+ * Chronologies must not be registered until they are completely constructed.
+ * Specifically, not in the constructor of Chronology.
+ *
+ * @param chrono the chronology to register; not null
+ * @return the already registered Chronology if any, may be null
+ */
+ static Chronology registerChrono(Chronology chrono) {
+ return registerChrono(chrono, chrono.getId());
+ }
+
+ /**
+ * Register a Chronology by ID and type for lookup by {@link #of(String)}.
+ * Chronos must not be registered until they are completely constructed.
+ * Specifically, not in the constructor of Chronology.
+ *
+ * @param chrono the chronology to register; not null
+ * @param id the ID to register the chronology; not null
+ * @return the already registered Chronology if any, may be null
+ */
+ static Chronology registerChrono(Chronology chrono, String id) {
+ Chronology prev = CHRONOS_BY_ID.putIfAbsent(id, chrono);
+ if (prev == null) {
+ String type = chrono.getCalendarType();
+ if (type != null) {
+ CHRONOS_BY_TYPE.putIfAbsent(type, chrono);
+ }
+ }
+ return prev;
+ }
+
+ /**
+ * Initialization of the maps from id and type to Chronology.
+ * The ServiceLoader is used to find and register any implementations
+ * of {@link java.time.chrono.AbstractChronology} found in the bootclass loader.
+ * The built-in chronologies are registered explicitly.
+ * Calendars configured via the Thread's context classloader are local
+ * to that thread and are ignored.
+ * <p>
+ * The initialization is done only once using the registration
+ * of the IsoChronology as the test and the final step.
+ * Multiple threads may perform the initialization concurrently.
+ * Only the first registration of each Chronology is retained by the
+ * ConcurrentHashMap.
+ * @return true if the cache was initialized
+ */
+ private static boolean initCache() {
+ if (CHRONOS_BY_ID.get("ISO") == null) {
+ // Initialization is incomplete
+
+ // Register built-in Chronologies
+ registerChrono(HijrahChronology.INSTANCE);
+ registerChrono(JapaneseChronology.INSTANCE);
+ registerChrono(MinguoChronology.INSTANCE);
+ registerChrono(ThaiBuddhistChronology.INSTANCE);
+
+ // Register Chronologies from the ServiceLoader
+ @SuppressWarnings("rawtypes")
+ ServiceLoader<AbstractChronology> loader = ServiceLoader.load(AbstractChronology.class, null);
+ for (AbstractChronology chrono : loader) {
+ String id = chrono.getId();
+ if (id.equals("ISO") || registerChrono(chrono) != null) {
+ // Log the attempt to replace an existing Chronology
+ PlatformLogger logger = PlatformLogger.getLogger("java.time.chrono");
+ logger.warning("Ignoring duplicate Chronology, from ServiceLoader configuration " + id);
+ }
+ }
+
+ // finally, register IsoChronology to mark initialization is complete
+ registerChrono(IsoChronology.INSTANCE);
+ return true;
+ }
+ return false;
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Obtains an instance of {@code Chronology} from a locale.
+ * <p>
+ * See {@link Chronology#ofLocale(Locale)}.
+ *
+ * @param locale the locale to use to obtain the calendar system, not null
+ * @return the calendar system associated with the locale, not null
+ * @throws java.time.DateTimeException if the locale-specified calendar cannot be found
+ */
+ static Chronology ofLocale(Locale locale) {
+ Objects.requireNonNull(locale, "locale");
+ String type = locale.getUnicodeLocaleType("ca");
+ if (type == null || "iso".equals(type) || "iso8601".equals(type)) {
+ return IsoChronology.INSTANCE;
+ }
+ // Not pre-defined; lookup by the type
+ do {
+ Chronology chrono = CHRONOS_BY_TYPE.get(type);
+ if (chrono != null) {
+ return chrono;
+ }
+ // If not found, do the initialization (once) and repeat the lookup
+ } while (initCache());
+
+ // Look for a Chronology using ServiceLoader of the Thread's ContextClassLoader
+ // Application provided Chronologies must not be cached
+ @SuppressWarnings("rawtypes")
+ ServiceLoader<Chronology> loader = ServiceLoader.load(Chronology.class);
+ for (Chronology chrono : loader) {
+ if (type.equals(chrono.getCalendarType())) {
+ return chrono;
+ }
+ }
+ throw new DateTimeException("Unknown calendar system: " + type);
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Obtains an instance of {@code Chronology} from a chronology ID or
+ * calendar system type.
+ * <p>
+ * See {@link Chronology#of(String)}.
+ *
+ * @param id the chronology ID or calendar system type, not null
+ * @return the chronology with the identifier requested, not null
+ * @throws java.time.DateTimeException if the chronology cannot be found
+ */
+ static Chronology of(String id) {
+ Objects.requireNonNull(id, "id");
+ do {
+ Chronology chrono = of0(id);
+ if (chrono != null) {
+ return chrono;
+ }
+ // If not found, do the initialization (once) and repeat the lookup
+ } while (initCache());
+
+ // Look for a Chronology using ServiceLoader of the Thread's ContextClassLoader
+ // Application provided Chronologies must not be cached
+ @SuppressWarnings("rawtypes")
+ ServiceLoader<Chronology> loader = ServiceLoader.load(Chronology.class);
+ for (Chronology chrono : loader) {
+ if (id.equals(chrono.getId()) || id.equals(chrono.getCalendarType())) {
+ return chrono;
+ }
+ }
+ throw new DateTimeException("Unknown chronology: " + id);
+ }
+
+ /**
+ * Obtains an instance of {@code Chronology} from a chronology ID or
+ * calendar system type.
+ *
+ * @param id the chronology ID or calendar system type, not null
+ * @return the chronology with the identifier requested, or {@code null} if not found
+ */
+ private static Chronology of0(String id) {
+ Chronology chrono = CHRONOS_BY_ID.get(id);
+ if (chrono == null) {
+ chrono = CHRONOS_BY_TYPE.get(id);
+ }
+ return chrono;
+ }
+
+ /**
+ * Returns the available chronologies.
+ * <p>
+ * Each returned {@code Chronology} is available for use in the system.
+ * The set of chronologies includes the system chronologies and
+ * any chronologies provided by the application via ServiceLoader
+ * configuration.
+ *
+ * @return the independent, modifiable set of the available chronology IDs, not null
+ */
+ static Set<Chronology> getAvailableChronologies() {
+ initCache(); // force initialization
+ HashSet<Chronology> chronos = new HashSet<>(CHRONOS_BY_ID.values());
+
+ /// Add in Chronologies from the ServiceLoader configuration
+ @SuppressWarnings("rawtypes")
+ ServiceLoader<Chronology> loader = ServiceLoader.load(Chronology.class);
+ for (Chronology chrono : loader) {
+ chronos.add(chrono);
+ }
+ return chronos;
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Creates an instance.
+ */
+ protected AbstractChronology() {
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * 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 are resolved by this method, which may
+ * be overridden in subclasses.
+ * <ul>
+ * <li>{@code EPOCH_DAY} - If present, this is converted to a date 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 last available era
+ * 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 date.
+ * In all three modes, the {@code YEAR} is validated.
+ * If the mode is smart or strict, then the month and day are validated.
+ * If the mode is lenient, then the date is combined in a manner equivalent to
+ * creating a date on the first day of the first month 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 date.
+ * 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 day of 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 date.
+ * 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 day of the first month 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 date. 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 date.
+ * 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 day of 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 date.
+ * 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>
+ * <p>
+ * The default implementation is suitable for most calendar systems.
+ * If {@link java.time.temporal.ChronoField#YEAR_OF_ERA} is found without an {@link java.time.temporal.ChronoField#ERA}
+ * then the last era in {@link #eras()} is used.
+ * The implementation assumes a 7 day week, that the first day-of-month
+ * has the value 1, that first day-of-year has the value 1, and that the
+ * first of the month and year always exists.
+ *
+ * @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 java.time.DateTimeException if the date cannot be resolved, typically
+ * because of a conflict in the input data
+ */
+ @Override
+ public ChronoLocalDate resolveDate(Map<TemporalField, Long> fieldValues, ResolverStyle resolverStyle) {
+ // check epoch-day before inventing era
+ if (fieldValues.containsKey(EPOCH_DAY)) {
+ return dateEpochDay(fieldValues.remove(EPOCH_DAY));
+ }
+
+ // fix proleptic month before inventing era
+ resolveProlepticMonth(fieldValues, resolverStyle);
+
+ // invent era if necessary to resolve year-of-era
+ ChronoLocalDate resolved = resolveYearOfEra(fieldValues, resolverStyle);
+ if (resolved != null) {
+ return resolved;
+ }
+
+ // build date
+ if (fieldValues.containsKey(YEAR)) {
+ if (fieldValues.containsKey(MONTH_OF_YEAR)) {
+ if (fieldValues.containsKey(DAY_OF_MONTH)) {
+ return resolveYMD(fieldValues, resolverStyle);
+ }
+ if (fieldValues.containsKey(ALIGNED_WEEK_OF_MONTH)) {
+ if (fieldValues.containsKey(ALIGNED_DAY_OF_WEEK_IN_MONTH)) {
+ return resolveYMAA(fieldValues, resolverStyle);
+ }
+ if (fieldValues.containsKey(DAY_OF_WEEK)) {
+ return resolveYMAD(fieldValues, resolverStyle);
+ }
+ }
+ }
+ if (fieldValues.containsKey(DAY_OF_YEAR)) {
+ return resolveYD(fieldValues, resolverStyle);
+ }
+ if (fieldValues.containsKey(ALIGNED_WEEK_OF_YEAR)) {
+ if (fieldValues.containsKey(ALIGNED_DAY_OF_WEEK_IN_YEAR)) {
+ return resolveYAA(fieldValues, resolverStyle);
+ }
+ if (fieldValues.containsKey(DAY_OF_WEEK)) {
+ return resolveYAD(fieldValues, resolverStyle);
+ }
+ }
+ }
+ return null;
+ }
+
+ 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);
+ }
+ // first day-of-month is likely to be safest for setting proleptic-month
+ // cannot add to year zero, as not all chronologies have a year zero
+ ChronoLocalDate chronoDate = dateNow()
+ .with(DAY_OF_MONTH, 1).with(PROLEPTIC_MONTH, pMonth);
+ addFieldValue(fieldValues, MONTH_OF_YEAR, chronoDate.get(MONTH_OF_YEAR));
+ addFieldValue(fieldValues, YEAR, chronoDate.get(YEAR));
+ }
+ }
+
+ ChronoLocalDate resolveYearOfEra(Map<TemporalField, Long> fieldValues, ResolverStyle resolverStyle) {
+ Long yoeLong = fieldValues.remove(YEAR_OF_ERA);
+ if (yoeLong != null) {
+ Long eraLong = fieldValues.remove(ERA);
+ int yoe;
+ if (resolverStyle != ResolverStyle.LENIENT) {
+ yoe = range(YEAR_OF_ERA).checkValidIntValue(yoeLong, YEAR_OF_ERA);
+ } else {
+ yoe = Math.toIntExact(yoeLong);
+ }
+ if (eraLong != null) {
+ Era eraObj = eraOf(range(ERA).checkValidIntValue(eraLong, ERA));
+ addFieldValue(fieldValues, YEAR, prolepticYear(eraObj, yoe));
+ } else {
+ if (fieldValues.containsKey(YEAR)) {
+ int year = range(YEAR).checkValidIntValue(fieldValues.get(YEAR), YEAR);
+ ChronoLocalDate chronoDate = dateYearDay(year, 1);
+ addFieldValue(fieldValues, YEAR, prolepticYear(chronoDate.getEra(), yoe));
+ } else if (resolverStyle == ResolverStyle.STRICT) {
+ // do not invent era if strict
+ // reinstate the field removed earlier, no cross-check issues
+ fieldValues.put(YEAR_OF_ERA, yoeLong);
+ } else {
+ List<Era> eras = eras();
+ if (eras.isEmpty()) {
+ addFieldValue(fieldValues, YEAR, yoe);
+ } else {
+ Era eraObj = eras.get(eras.size() - 1);
+ addFieldValue(fieldValues, YEAR, prolepticYear(eraObj, yoe));
+ }
+ }
+ }
+ } else if (fieldValues.containsKey(ERA)) {
+ range(ERA).checkValidValue(fieldValues.get(ERA), ERA); // always validated
+ }
+ return null;
+ }
+
+ ChronoLocalDate resolveYMD(Map<TemporalField, Long> fieldValues, ResolverStyle resolverStyle) {
+ int y = range(YEAR).checkValidIntValue(fieldValues.remove(YEAR), 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 date(y, 1, 1).plus(months, MONTHS).plus(days, DAYS);
+ }
+ int moy = range(MONTH_OF_YEAR).checkValidIntValue(fieldValues.remove(MONTH_OF_YEAR), MONTH_OF_YEAR);
+ ValueRange domRange = range(DAY_OF_MONTH);
+ int dom = domRange.checkValidIntValue(fieldValues.remove(DAY_OF_MONTH), DAY_OF_MONTH);
+ if (resolverStyle == ResolverStyle.SMART) { // previous valid
+ try {
+ return date(y, moy, dom);
+ } catch (DateTimeException ex) {
+ return date(y, moy, 1).with(TemporalAdjuster.lastDayOfMonth());
+ }
+ }
+ return date(y, moy, dom);
+ }
+
+ ChronoLocalDate resolveYD(Map<TemporalField, Long> fieldValues, ResolverStyle resolverStyle) {
+ int y = range(YEAR).checkValidIntValue(fieldValues.remove(YEAR), YEAR);
+ if (resolverStyle == ResolverStyle.LENIENT) {
+ long days = Math.subtractExact(fieldValues.remove(DAY_OF_YEAR), 1);
+ return dateYearDay(y, 1).plus(days, DAYS);
+ }
+ int doy = range(DAY_OF_YEAR).checkValidIntValue(fieldValues.remove(DAY_OF_YEAR), DAY_OF_YEAR);
+ return dateYearDay(y, doy); // smart is same as strict
+ }
+
+ ChronoLocalDate resolveYMAA(Map<TemporalField, Long> fieldValues, ResolverStyle resolverStyle) {
+ int y = range(YEAR).checkValidIntValue(fieldValues.remove(YEAR), YEAR);
+ if (resolverStyle == ResolverStyle.LENIENT) {
+ long months = Math.subtractExact(fieldValues.remove(MONTH_OF_YEAR), 1);
+ long weeks = Math.subtractExact(fieldValues.remove(ALIGNED_WEEK_OF_MONTH), 1);
+ long days = Math.subtractExact(fieldValues.remove(ALIGNED_DAY_OF_WEEK_IN_MONTH), 1);
+ return date(y, 1, 1).plus(months, MONTHS).plus(weeks, WEEKS).plus(days, DAYS);
+ }
+ int moy = range(MONTH_OF_YEAR).checkValidIntValue(fieldValues.remove(MONTH_OF_YEAR), MONTH_OF_YEAR);
+ int aw = range(ALIGNED_WEEK_OF_MONTH).checkValidIntValue(fieldValues.remove(ALIGNED_WEEK_OF_MONTH), ALIGNED_WEEK_OF_MONTH);
+ int ad = range(ALIGNED_DAY_OF_WEEK_IN_MONTH).checkValidIntValue(fieldValues.remove(ALIGNED_DAY_OF_WEEK_IN_MONTH), ALIGNED_DAY_OF_WEEK_IN_MONTH);
+ ChronoLocalDate date = date(y, moy, 1).plus((aw - 1) * 7 + (ad - 1), DAYS);
+ if (resolverStyle == ResolverStyle.STRICT && date.get(MONTH_OF_YEAR) != moy) {
+ throw new DateTimeException("Strict mode rejected resolved date as it is in a different month");
+ }
+ return date;
+ }
+
+ ChronoLocalDate resolveYMAD(Map<TemporalField, Long> fieldValues, ResolverStyle resolverStyle) {
+ int y = range(YEAR).checkValidIntValue(fieldValues.remove(YEAR), YEAR);
+ if (resolverStyle == ResolverStyle.LENIENT) {
+ long months = Math.subtractExact(fieldValues.remove(MONTH_OF_YEAR), 1);
+ long weeks = Math.subtractExact(fieldValues.remove(ALIGNED_WEEK_OF_MONTH), 1);
+ long dow = Math.subtractExact(fieldValues.remove(DAY_OF_WEEK), 1);
+ return resolveAligned(date(y, 1, 1), months, weeks, dow);
+ }
+ int moy = range(MONTH_OF_YEAR).checkValidIntValue(fieldValues.remove(MONTH_OF_YEAR), MONTH_OF_YEAR);
+ int aw = range(ALIGNED_WEEK_OF_MONTH).checkValidIntValue(fieldValues.remove(ALIGNED_WEEK_OF_MONTH), ALIGNED_WEEK_OF_MONTH);
+ int dow = range(DAY_OF_WEEK).checkValidIntValue(fieldValues.remove(DAY_OF_WEEK), DAY_OF_WEEK);
+ ChronoLocalDate date = date(y, moy, 1).plus((aw - 1) * 7, DAYS).with(nextOrSame(DayOfWeek.of(dow)));
+ if (resolverStyle == ResolverStyle.STRICT && date.get(MONTH_OF_YEAR) != moy) {
+ throw new DateTimeException("Strict mode rejected resolved date as it is in a different month");
+ }
+ return date;
+ }
+
+ ChronoLocalDate resolveYAA(Map<TemporalField, Long> fieldValues, ResolverStyle resolverStyle) {
+ int y = range(YEAR).checkValidIntValue(fieldValues.remove(YEAR), YEAR);
+ if (resolverStyle == ResolverStyle.LENIENT) {
+ long weeks = Math.subtractExact(fieldValues.remove(ALIGNED_WEEK_OF_YEAR), 1);
+ long days = Math.subtractExact(fieldValues.remove(ALIGNED_DAY_OF_WEEK_IN_YEAR), 1);
+ return dateYearDay(y, 1).plus(weeks, WEEKS).plus(days, DAYS);
+ }
+ int aw = range(ALIGNED_WEEK_OF_YEAR).checkValidIntValue(fieldValues.remove(ALIGNED_WEEK_OF_YEAR), ALIGNED_WEEK_OF_YEAR);
+ int ad = range(ALIGNED_DAY_OF_WEEK_IN_YEAR).checkValidIntValue(fieldValues.remove(ALIGNED_DAY_OF_WEEK_IN_YEAR), ALIGNED_DAY_OF_WEEK_IN_YEAR);
+ ChronoLocalDate date = dateYearDay(y, 1).plus((aw - 1) * 7 + (ad - 1), DAYS);
+ if (resolverStyle == ResolverStyle.STRICT && date.get(YEAR) != y) {
+ throw new DateTimeException("Strict mode rejected resolved date as it is in a different year");
+ }
+ return date;
+ }
+
+ ChronoLocalDate resolveYAD(Map<TemporalField, Long> fieldValues, ResolverStyle resolverStyle) {
+ int y = range(YEAR).checkValidIntValue(fieldValues.remove(YEAR), YEAR);
+ if (resolverStyle == ResolverStyle.LENIENT) {
+ long weeks = Math.subtractExact(fieldValues.remove(ALIGNED_WEEK_OF_YEAR), 1);
+ long dow = Math.subtractExact(fieldValues.remove(DAY_OF_WEEK), 1);
+ return resolveAligned(dateYearDay(y, 1), 0, weeks, dow);
+ }
+ int aw = range(ALIGNED_WEEK_OF_YEAR).checkValidIntValue(fieldValues.remove(ALIGNED_WEEK_OF_YEAR), ALIGNED_WEEK_OF_YEAR);
+ int dow = range(DAY_OF_WEEK).checkValidIntValue(fieldValues.remove(DAY_OF_WEEK), DAY_OF_WEEK);
+ ChronoLocalDate date = dateYearDay(y, 1).plus((aw - 1) * 7, DAYS).with(nextOrSame(DayOfWeek.of(dow)));
+ if (resolverStyle == ResolverStyle.STRICT && date.get(YEAR) != y) {
+ throw new DateTimeException("Strict mode rejected resolved date as it is in a different year");
+ }
+ return date;
+ }
+
+ ChronoLocalDate resolveAligned(ChronoLocalDate base, long months, long weeks, long dow) {
+ ChronoLocalDate date = base.plus(months, MONTHS).plus(weeks, WEEKS);
+ if (dow > 7) {
+ date = date.plus((dow - 1) / 7, WEEKS);
+ dow = ((dow - 1) % 7) + 1;
+ } else if (dow < 1) {
+ date = date.plus(Math.subtractExact(dow, 7) / 7, WEEKS);
+ dow = ((dow + 6) % 7) + 1;
+ }
+ return date.with(nextOrSame(DayOfWeek.of((int) dow)));
+ }
+
+ /**
+ * Adds a field-value pair to the map, checking for conflicts.
+ * <p>
+ * If the field is not already present, then the field-value pair is added to the map.
+ * If the field is already present and it has the same value as that specified, no action occurs.
+ * If the field is already present and it has a different value to that specified, then
+ * an exception is thrown.
+ *
+ * @param field the field to add, not null
+ * @param value the value to add, not null
+ * @throws java.time.DateTimeException if the field is already present with a different value
+ */
+ void addFieldValue(Map<TemporalField, Long> fieldValues, ChronoField field, long value) {
+ Long old = fieldValues.get(field); // check first for better error message
+ if (old != null && old.longValue() != value) {
+ throw new DateTimeException("Conflict found: " + field + " " + old + " differs from " + field + " " + value);
+ }
+ fieldValues.put(field, value);
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Compares this chronology to another chronology.
+ * <p>
+ * The comparison order first by the chronology ID string, then by any
+ * additional information specific to the subclass.
+ * It is "consistent with equals", as defined by {@link Comparable}.
+ *
+ * @implSpec
+ * This implementation compares the chronology ID.
+ * Subclasses must compare any additional state that they store.
+ *
+ * @param other the other chronology to compare to, not null
+ * @return the comparator value, negative if less, positive if greater
+ */
+ @Override
+ public int compareTo(Chronology other) {
+ return getId().compareTo(other.getId());
+ }
+
+ /**
+ * Checks if this chronology is equal to another chronology.
+ * <p>
+ * The comparison is based on the entire state of the object.
+ *
+ * @implSpec
+ * This implementation checks the type and calls
+ * {@link #compareTo(java.time.chrono.Chronology)}.
+ *
+ * @param obj the object to check, null returns false
+ * @return true if this is equal to the other chronology
+ */
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+ if (obj instanceof AbstractChronology) {
+ return compareTo((AbstractChronology) obj) == 0;
+ }
+ return false;
+ }
+
+ /**
+ * A hash code for this chronology.
+ * <p>
+ * The hash code should be based on the entire state of the object.
+ *
+ * @implSpec
+ * This implementation is based on the chronology ID and class.
+ * Subclasses should add any additional state that they store.
+ *
+ * @return a suitable hash code
+ */
+ @Override
+ public int hashCode() {
+ return getClass().hashCode() ^ getId().hashCode();
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Outputs this chronology as a {@code String}, using the chronology ID.
+ *
+ * @return a string representation of this chronology, not null
+ */
+ @Override
+ public String toString() {
+ return getId();
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Writes the Chronology using a
+ * <a href="../../../serialized-form.html#java.time.chrono.Ser">dedicated serialized form</a>.
+ * <pre>
+ * out.writeByte(1); // identifies this as a Chronology
+ * out.writeUTF(getId());
+ * </pre>
+ *
+ * @return the instance of {@code Ser}, not null
+ */
+ Object writeReplace() {
+ return new Ser(Ser.CHRONO_TYPE, this);
+ }
+
+ /**
+ * Defend against malicious streams.
+ * @return never
+ * @throws java.io.InvalidObjectException always
+ */
+ private Object readResolve() throws ObjectStreamException {
+ throw new InvalidObjectException("Deserialization via serialization delegate");
+ }
+
+ void writeExternal(DataOutput out) throws IOException {
+ out.writeUTF(getId());
+ }
+
+ static Chronology readExternal(DataInput in) throws IOException {
+ String id = in.readUTF();
+ return Chronology.of(id);
+ }
+
+}