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Backport of JSR-310 from JDK 8 to JDK 7 and JDK 6. NOT an implementation of the JSR.

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/*
 * Copyright (c) 2007-present, 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 org.threeten.bp.chrono;

import static org.threeten.bp.temporal.ChronoField.ALIGNED_DAY_OF_WEEK_IN_MONTH;
import static org.threeten.bp.temporal.ChronoField.ALIGNED_DAY_OF_WEEK_IN_YEAR;
import static org.threeten.bp.temporal.ChronoField.ALIGNED_WEEK_OF_MONTH;
import static org.threeten.bp.temporal.ChronoField.ALIGNED_WEEK_OF_YEAR;
import static org.threeten.bp.temporal.ChronoField.DAY_OF_MONTH;
import static org.threeten.bp.temporal.ChronoField.DAY_OF_WEEK;
import static org.threeten.bp.temporal.ChronoField.DAY_OF_YEAR;
import static org.threeten.bp.temporal.ChronoField.EPOCH_DAY;
import static org.threeten.bp.temporal.ChronoField.ERA;
import static org.threeten.bp.temporal.ChronoField.MONTH_OF_YEAR;
import static org.threeten.bp.temporal.ChronoField.PROLEPTIC_MONTH;
import static org.threeten.bp.temporal.ChronoField.YEAR;
import static org.threeten.bp.temporal.ChronoField.YEAR_OF_ERA;
import static org.threeten.bp.temporal.ChronoUnit.DAYS;
import static org.threeten.bp.temporal.ChronoUnit.MONTHS;
import static org.threeten.bp.temporal.ChronoUnit.WEEKS;
import static org.threeten.bp.temporal.TemporalAdjusters.nextOrSame;

import java.io.Serializable;
import java.util.Arrays;
import java.util.Calendar;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;

import org.threeten.bp.Clock;
import org.threeten.bp.DateTimeException;
import org.threeten.bp.DayOfWeek;
import org.threeten.bp.Instant;
import org.threeten.bp.LocalDate;
import org.threeten.bp.ZoneId;
import org.threeten.bp.format.ResolverStyle;
import org.threeten.bp.jdk8.Jdk8Methods;
import org.threeten.bp.temporal.ChronoField;
import org.threeten.bp.temporal.TemporalAccessor;
import org.threeten.bp.temporal.TemporalField;
import org.threeten.bp.temporal.ValueRange;

/**
 * The Japanese Imperial calendar system.
 * 

* This chronology defines the rules of the Japanese Imperial calendar system. * This calendar system is primarily used in Japan. * The Japanese Imperial calendar system is the same as the ISO calendar system * apart from the era-based year numbering. *

* Japan introduced the Gregorian calendar starting with Meiji 6. * Only Meiji and later eras are supported; * dates before Meiji 6, January 1 are not supported. *

* The supported {@code ChronoField} instances are: *

    *
  • {@code DAY_OF_WEEK} *
  • {@code DAY_OF_MONTH} *
  • {@code DAY_OF_YEAR} *
  • {@code EPOCH_DAY} *
  • {@code MONTH_OF_YEAR} *
  • {@code PROLEPTIC_MONTH} *
  • {@code YEAR_OF_ERA} *
  • {@code YEAR} *
  • {@code ERA} *
* *

Specification for implementors

* This class is immutable and thread-safe. */ public final class JapaneseChronology extends Chronology implements Serializable { // Locale for creating a JapaneseImpericalCalendar. static final Locale LOCALE = new Locale("ja", "JP", "JP"); /** * Singleton instance for Japanese chronology. */ public static final JapaneseChronology INSTANCE = new JapaneseChronology(); /** * Serialization version. */ private static final long serialVersionUID = 459996390165777884L; /** * Narrow names for eras. */ private static final Map ERA_NARROW_NAMES = new HashMap(); /** * Short names for eras. */ private static final Map ERA_SHORT_NAMES = new HashMap(); /** * Full names for eras. */ private static final Map 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 = "ja"; /** * Name data. */ // TODO: replace all the hard-coded Maps with locale resources static { ERA_NARROW_NAMES.put(FALLBACK_LANGUAGE, new String[]{"Unknown", "K", "M", "T", "S", "H"}); ERA_NARROW_NAMES.put(TARGET_LANGUAGE, new String[]{"Unknown", "K", "M", "T", "S", "H"}); ERA_SHORT_NAMES.put(FALLBACK_LANGUAGE, new String[]{"Unknown", "K", "M", "T", "S", "H"}); ERA_SHORT_NAMES.put(TARGET_LANGUAGE, new String[]{"Unknown", "\u6176", "\u660e", "\u5927", "\u662d", "\u5e73"}); ERA_FULL_NAMES.put(FALLBACK_LANGUAGE, new String[]{"Unknown", "Keio", "Meiji", "Taisho", "Showa", "Heisei"}); ERA_FULL_NAMES.put(TARGET_LANGUAGE, new String[]{"Unknown", "\u6176\u5fdc", "\u660e\u6cbb", "\u5927\u6b63", "\u662d\u548c", "\u5e73\u6210"}); } //----------------------------------------------------------------------- /** * Restricted constructor. */ private JapaneseChronology() { } /** * Resolve singleton. * * @return the singleton instance, not null */ private Object readResolve() { return INSTANCE; } //----------------------------------------------------------------------- /** * Gets the ID of the chronology - 'Japanese'. *

* The ID uniquely identifies the {@code Chronology}. * It can be used to lookup the {@code Chronology} using {@link #of(String)}. * * @return the chronology ID - 'Japanese' * @see #getCalendarType() */ @Override public String getId() { return "Japanese"; } /** * Gets the calendar type of the underlying calendar system - 'japanese'. *

* The calendar type is an identifier defined by the * Unicode Locale Data Markup Language (LDML) specification. * It can be used to lookup the {@code Chronology} using {@link #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 - 'japanese' * @see #getId() */ @Override public String getCalendarType() { return "japanese"; } //----------------------------------------------------------------------- @Override // override with covariant return type public JapaneseDate date(Era era, int yearOfEra, int month, int dayOfMonth) { if (era instanceof JapaneseEra == false) { throw new ClassCastException("Era must be JapaneseEra"); } return JapaneseDate.of((JapaneseEra) era, yearOfEra, month, dayOfMonth); } @Override // override with covariant return type public JapaneseDate date(int prolepticYear, int month, int dayOfMonth) { return new JapaneseDate(LocalDate.of(prolepticYear, month, dayOfMonth)); } /** * Obtains a local date in Japanese calendar system from the * era, year-of-era and day-of-year fields. *

* The day-of-year in this factory is expressed relative to the start of the year-of-era. * This definition changes the normal meaning of day-of-year only in those years * where the year-of-era is reset to one due to a change in the era. * For example: *

     *  6th Jan Showa 64 = day-of-year 6
     *  7th Jan Showa 64 = day-of-year 7
     *  8th Jan Heisei 1 = day-of-year 1
     *  9th Jan Heisei 1 = day-of-year 2
     * 
* * @param era the Japanese era, not null * @param yearOfEra the year-of-era * @param dayOfYear the day-of-year * @return the Japanese local date, not null * @throws DateTimeException if unable to create the date * @throws ClassCastException if the {@code era} is not a {@code JapaneseEra} */ @Override public JapaneseDate dateYearDay(Era era, int yearOfEra, int dayOfYear) { if (era instanceof JapaneseEra == false) { throw new ClassCastException("Era must be JapaneseEra"); } return JapaneseDate.ofYearDay((JapaneseEra) era, yearOfEra, dayOfYear); } /** * Obtains a local date in Japanese calendar system from the * proleptic-year and day-of-year fields. *

* The day-of-year in this factory is expressed relative to the start of the proleptic year. * The Japanese proleptic year and day-of-year are the same as those in the ISO calendar system. * They are not reset when the era changes. * * @param prolepticYear the proleptic-year * @param dayOfYear the day-of-year * @return the Japanese local date, not null * @throws DateTimeException if unable to create the date */ @Override public JapaneseDate dateYearDay(int prolepticYear, int dayOfYear) { LocalDate date = LocalDate.ofYearDay(prolepticYear, dayOfYear); return date(prolepticYear, date.getMonthValue(), date.getDayOfMonth()); } @Override public JapaneseDate dateEpochDay(long epochDay) { return new JapaneseDate(LocalDate.ofEpochDay(epochDay)); } //----------------------------------------------------------------------- @Override // override with covariant return type public JapaneseDate date(TemporalAccessor temporal) { if (temporal instanceof JapaneseDate) { return (JapaneseDate) temporal; } return new JapaneseDate(LocalDate.from(temporal)); } @SuppressWarnings("unchecked") @Override // override with covariant return type public ChronoLocalDateTime localDateTime(TemporalAccessor temporal) { return (ChronoLocalDateTime) super.localDateTime(temporal); } @SuppressWarnings("unchecked") @Override // override with covariant return type public ChronoZonedDateTime zonedDateTime(TemporalAccessor temporal) { return (ChronoZonedDateTime) super.zonedDateTime(temporal); } @SuppressWarnings("unchecked") @Override // override with covariant return type public ChronoZonedDateTime zonedDateTime(Instant instant, ZoneId zone) { return (ChronoZonedDateTime) super.zonedDateTime(instant, zone); } //----------------------------------------------------------------------- @Override // override with covariant return type public JapaneseDate dateNow() { return (JapaneseDate) super.dateNow(); } @Override // override with covariant return type public JapaneseDate dateNow(ZoneId zone) { return (JapaneseDate) super.dateNow(zone); } @Override // override with covariant return type public JapaneseDate dateNow(Clock clock) { Jdk8Methods.requireNonNull(clock, "clock"); return (JapaneseDate) super.dateNow(clock); } //----------------------------------------------------------------------- /** * Checks if the specified year is a leap year. *

* Japanese calendar 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); } @Override public int prolepticYear(Era era, int yearOfEra) { if (era instanceof JapaneseEra == false) { throw new ClassCastException("Era must be JapaneseEra"); } JapaneseEra jera = (JapaneseEra) era; int isoYear = jera.startDate().getYear() + yearOfEra - 1; ValueRange range = ValueRange.of(1, jera.endDate().getYear() - jera.startDate().getYear() + 1); range.checkValidValue(yearOfEra, YEAR_OF_ERA); return isoYear; } /** * Returns the calendar system era object from the given numeric value. * * See the description of each Era for the numeric values of: * {@link JapaneseEra#HEISEI}, {@link JapaneseEra#SHOWA},{@link JapaneseEra#TAISHO}, * {@link JapaneseEra#MEIJI}), only Meiji and later eras are supported. * * @param eraValue the era value * @return the Japanese {@code Era} for the given numeric era value * @throws DateTimeException if {@code eraValue} is invalid */ @Override public JapaneseEra eraOf(int eraValue) { return JapaneseEra.of(eraValue); } @Override public List eras() { return Arrays.asList(JapaneseEra.values()); } //----------------------------------------------------------------------- @Override public ValueRange range(ChronoField field) { switch (field) { case DAY_OF_MONTH: case DAY_OF_WEEK: case MICRO_OF_DAY: case MICRO_OF_SECOND: case HOUR_OF_DAY: case HOUR_OF_AMPM: case MINUTE_OF_DAY: case MINUTE_OF_HOUR: case SECOND_OF_DAY: case SECOND_OF_MINUTE: case MILLI_OF_DAY: case MILLI_OF_SECOND: case NANO_OF_DAY: case NANO_OF_SECOND: case CLOCK_HOUR_OF_DAY: case CLOCK_HOUR_OF_AMPM: case EPOCH_DAY: case PROLEPTIC_MONTH: return field.range(); } Calendar jcal = Calendar.getInstance(LOCALE); switch (field) { case ERA: { JapaneseEra[] eras = JapaneseEra.values(); return ValueRange.of(eras[0].getValue(), eras[eras.length - 1].getValue()); } case YEAR: { JapaneseEra[] eras = JapaneseEra.values(); return ValueRange.of(JapaneseDate.MIN_DATE.getYear(), eras[eras.length - 1].endDate().getYear()); } case YEAR_OF_ERA: { JapaneseEra[] eras = JapaneseEra.values(); int maxIso = eras[eras.length - 1].endDate().getYear(); int maxJapanese = maxIso - eras[eras.length - 1].startDate().getYear() + 1; int min = Integer.MAX_VALUE; for (int i = 0; i < eras.length; i++) { min = Math.min(min, eras[i].endDate().getYear() - eras[i].startDate().getYear() + 1); } return ValueRange.of(1, 6, min, maxJapanese); } case MONTH_OF_YEAR: return ValueRange.of(jcal.getMinimum(Calendar.MONTH) + 1, jcal.getGreatestMinimum(Calendar.MONTH) + 1, jcal.getLeastMaximum(Calendar.MONTH) + 1, jcal.getMaximum(Calendar.MONTH) + 1); case DAY_OF_YEAR: { JapaneseEra[] eras = JapaneseEra.values(); int min = 366; for (int i = 0; i < eras.length; i++) { min = Math.min(min, eras[i].startDate().lengthOfYear() - eras[i].startDate().getDayOfYear() + 1); } return ValueRange.of(1, min, 366); } default: // TODO: review the remaining fields throw new UnsupportedOperationException("Unimplementable field: " + field); } } @Override public JapaneseDate resolveDate(Map fieldValues, ResolverStyle resolverStyle) { if (fieldValues.containsKey(EPOCH_DAY)) { return dateEpochDay(fieldValues.remove(EPOCH_DAY)); } // normalize fields Long prolepticMonth = fieldValues.remove(PROLEPTIC_MONTH); if (prolepticMonth != null) { if (resolverStyle != ResolverStyle.LENIENT) { PROLEPTIC_MONTH.checkValidValue(prolepticMonth); } updateResolveMap(fieldValues, MONTH_OF_YEAR, Jdk8Methods.floorMod(prolepticMonth, 12) + 1); updateResolveMap(fieldValues, YEAR, Jdk8Methods.floorDiv(prolepticMonth, 12)); } // eras Long eraLong = fieldValues.get(ERA); JapaneseEra era = null; if (eraLong != null) { era = eraOf(range(ERA).checkValidIntValue(eraLong, ERA)); } Long yoeLong = fieldValues.get(YEAR_OF_ERA); if (yoeLong != null) { int yoe= range(YEAR_OF_ERA).checkValidIntValue(yoeLong, YEAR_OF_ERA); if (era == null && resolverStyle != ResolverStyle.STRICT && fieldValues.containsKey(YEAR) == false) { List eras = eras(); era = (JapaneseEra) eras.get(eras.size() - 1); } // can only resolve to dates, not to proleptic-year if (era != null && fieldValues.containsKey(MONTH_OF_YEAR) && fieldValues.containsKey(DAY_OF_MONTH)) { fieldValues.remove(ERA); fieldValues.remove(YEAR_OF_ERA); return resolveEYMD(fieldValues, resolverStyle, era, yoe); } if (era != null && fieldValues.containsKey(DAY_OF_YEAR)) { fieldValues.remove(ERA); fieldValues.remove(YEAR_OF_ERA); return resolveEYD(fieldValues, resolverStyle, era, yoe); } } // build date if (fieldValues.containsKey(YEAR)) { if (fieldValues.containsKey(MONTH_OF_YEAR)) { if (fieldValues.containsKey(DAY_OF_MONTH)) { int y = YEAR.checkValidIntValue(fieldValues.remove(YEAR)); if (resolverStyle == ResolverStyle.LENIENT) { long months = Jdk8Methods.safeSubtract(fieldValues.remove(MONTH_OF_YEAR), 1); long days = Jdk8Methods.safeSubtract(fieldValues.remove(DAY_OF_MONTH), 1); return date(y, 1, 1).plusMonths(months).plusDays(days); } else { int moy = range(MONTH_OF_YEAR).checkValidIntValue(fieldValues.remove(MONTH_OF_YEAR), MONTH_OF_YEAR); int dom = range(DAY_OF_MONTH).checkValidIntValue(fieldValues.remove(DAY_OF_MONTH), DAY_OF_MONTH); if (resolverStyle == ResolverStyle.SMART && dom > 28) { dom = Math.min(dom, date(y, moy, 1).lengthOfMonth()); } return date(y, moy, dom); } } if (fieldValues.containsKey(ALIGNED_WEEK_OF_MONTH)) { if (fieldValues.containsKey(ALIGNED_DAY_OF_WEEK_IN_MONTH)) { int y = YEAR.checkValidIntValue(fieldValues.remove(YEAR)); if (resolverStyle == ResolverStyle.LENIENT) { long months = Jdk8Methods.safeSubtract(fieldValues.remove(MONTH_OF_YEAR), 1); long weeks = Jdk8Methods.safeSubtract(fieldValues.remove(ALIGNED_WEEK_OF_MONTH), 1); long days = Jdk8Methods.safeSubtract(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 = MONTH_OF_YEAR.checkValidIntValue(fieldValues.remove(MONTH_OF_YEAR)); int aw = ALIGNED_WEEK_OF_MONTH.checkValidIntValue(fieldValues.remove(ALIGNED_WEEK_OF_MONTH)); int ad = ALIGNED_DAY_OF_WEEK_IN_MONTH.checkValidIntValue(fieldValues.remove(ALIGNED_DAY_OF_WEEK_IN_MONTH)); JapaneseDate 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 date parsed to a different month"); } return date; } if (fieldValues.containsKey(DAY_OF_WEEK)) { int y = YEAR.checkValidIntValue(fieldValues.remove(YEAR)); if (resolverStyle == ResolverStyle.LENIENT) { long months = Jdk8Methods.safeSubtract(fieldValues.remove(MONTH_OF_YEAR), 1); long weeks = Jdk8Methods.safeSubtract(fieldValues.remove(ALIGNED_WEEK_OF_MONTH), 1); long days = Jdk8Methods.safeSubtract(fieldValues.remove(DAY_OF_WEEK), 1); return date(y, 1, 1).plus(months, MONTHS).plus(weeks, WEEKS).plus(days, DAYS); } int moy = MONTH_OF_YEAR.checkValidIntValue(fieldValues.remove(MONTH_OF_YEAR)); int aw = ALIGNED_WEEK_OF_MONTH.checkValidIntValue(fieldValues.remove(ALIGNED_WEEK_OF_MONTH)); int dow = DAY_OF_WEEK.checkValidIntValue(fieldValues.remove(DAY_OF_WEEK)); JapaneseDate date = date(y, moy, 1).plus(aw - 1, WEEKS).with(nextOrSame(DayOfWeek.of(dow))); if (resolverStyle == ResolverStyle.STRICT && date.get(MONTH_OF_YEAR) != moy) { throw new DateTimeException("Strict mode rejected date parsed to a different month"); } return date; } } } if (fieldValues.containsKey(DAY_OF_YEAR)) { int y = YEAR.checkValidIntValue(fieldValues.remove(YEAR)); if (resolverStyle == ResolverStyle.LENIENT) { long days = Jdk8Methods.safeSubtract(fieldValues.remove(DAY_OF_YEAR), 1); return dateYearDay(y, 1).plusDays(days); } int doy = DAY_OF_YEAR.checkValidIntValue(fieldValues.remove(DAY_OF_YEAR)); return dateYearDay(y, doy); } if (fieldValues.containsKey(ALIGNED_WEEK_OF_YEAR)) { if (fieldValues.containsKey(ALIGNED_DAY_OF_WEEK_IN_YEAR)) { int y = YEAR.checkValidIntValue(fieldValues.remove(YEAR)); if (resolverStyle == ResolverStyle.LENIENT) { long weeks = Jdk8Methods.safeSubtract(fieldValues.remove(ALIGNED_WEEK_OF_YEAR), 1); long days = Jdk8Methods.safeSubtract(fieldValues.remove(ALIGNED_DAY_OF_WEEK_IN_YEAR), 1); return date(y, 1, 1).plus(weeks, WEEKS).plus(days, DAYS); } int aw = ALIGNED_WEEK_OF_YEAR.checkValidIntValue(fieldValues.remove(ALIGNED_WEEK_OF_YEAR)); int ad = ALIGNED_DAY_OF_WEEK_IN_YEAR.checkValidIntValue(fieldValues.remove(ALIGNED_DAY_OF_WEEK_IN_YEAR)); JapaneseDate date = date(y, 1, 1).plusDays((aw - 1) * 7 + (ad - 1)); if (resolverStyle == ResolverStyle.STRICT && date.get(YEAR) != y) { throw new DateTimeException("Strict mode rejected date parsed to a different year"); } return date; } if (fieldValues.containsKey(DAY_OF_WEEK)) { int y = YEAR.checkValidIntValue(fieldValues.remove(YEAR)); if (resolverStyle == ResolverStyle.LENIENT) { long weeks = Jdk8Methods.safeSubtract(fieldValues.remove(ALIGNED_WEEK_OF_YEAR), 1); long days = Jdk8Methods.safeSubtract(fieldValues.remove(DAY_OF_WEEK), 1); return date(y, 1, 1).plus(weeks, WEEKS).plus(days, DAYS); } int aw = ALIGNED_WEEK_OF_YEAR.checkValidIntValue(fieldValues.remove(ALIGNED_WEEK_OF_YEAR)); int dow = DAY_OF_WEEK.checkValidIntValue(fieldValues.remove(DAY_OF_WEEK)); JapaneseDate date = date(y, 1, 1).plus(aw - 1, WEEKS).with(nextOrSame(DayOfWeek.of(dow))); if (resolverStyle == ResolverStyle.STRICT && date.get(YEAR) != y) { throw new DateTimeException("Strict mode rejected date parsed to a different month"); } return date; } } } return null; } private JapaneseDate resolveEYMD(Map fieldValues, ResolverStyle resolverStyle, JapaneseEra era, int yoe) { if (resolverStyle == ResolverStyle.LENIENT) { int y = era.startDate().getYear() + yoe - 1; long months = Jdk8Methods.safeSubtract(fieldValues.remove(MONTH_OF_YEAR), 1); long days = Jdk8Methods.safeSubtract(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); int dom = range(DAY_OF_MONTH).checkValidIntValue(fieldValues.remove(DAY_OF_MONTH), DAY_OF_MONTH); if (resolverStyle == ResolverStyle.SMART) { // previous valid if (yoe < 1) { throw new DateTimeException("Invalid YearOfEra: " + yoe); } int y = era.startDate().getYear() + yoe - 1; if (dom > 28) { dom = Math.min(dom, date(y, moy, 1).lengthOfMonth()); } JapaneseDate jd = date(y, moy, dom); if (jd.getEra() != era) { // ensure within calendar year of change if (Math.abs(jd.getEra().getValue() - era.getValue()) > 1) { throw new DateTimeException("Invalid Era/YearOfEra: " + era + " " + yoe); } if (jd.get(YEAR_OF_ERA) != 1 && yoe != 1) { throw new DateTimeException("Invalid Era/YearOfEra: " + era + " " + yoe); } } return jd; } return date(era, yoe, moy, dom); } private JapaneseDate resolveEYD(Map fieldValues, ResolverStyle resolverStyle, JapaneseEra era, int yoe) { if (resolverStyle == ResolverStyle.LENIENT) { int y = era.startDate().getYear() + yoe - 1; long days = Jdk8Methods.safeSubtract(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(era, yoe, doy); // smart is same as strict } }





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