text: /*
   * 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.chrono.MinguoChronology.YEARS_DIFFERENCE;
  import static org.threeten.bp.temporal.ChronoField.DAY_OF_MONTH;
  import static org.threeten.bp.temporal.ChronoField.MONTH_OF_YEAR;
  import static org.threeten.bp.temporal.ChronoField.YEAR;
  
  import java.io.DataInput;
  import java.io.DataOutput;
  import java.io.IOException;
  import java.io.Serializable;
  
  import org.threeten.bp.Clock;
  import org.threeten.bp.DateTimeException;
  import org.threeten.bp.LocalDate;
  import org.threeten.bp.LocalTime;
  import org.threeten.bp.Period;
  import org.threeten.bp.ZoneId;
  import org.threeten.bp.jdk8.Jdk8Methods;
  import org.threeten.bp.temporal.ChronoField;
  import org.threeten.bp.temporal.TemporalAccessor;
  import org.threeten.bp.temporal.TemporalAdjuster;
  import org.threeten.bp.temporal.TemporalAmount;
  import org.threeten.bp.temporal.TemporalField;
  import org.threeten.bp.temporal.TemporalQuery;
  import org.threeten.bp.temporal.TemporalUnit;
  import org.threeten.bp.temporal.UnsupportedTemporalTypeException;
  import org.threeten.bp.temporal.ValueRange;
  
  /**
   * A date in the Minguo calendar system.
   * <p>
   * This date operates using the {@linkplain MinguoChronology Minguo calendar}.
   * This calendar system is primarily used in the Republic of China, often known as Taiwan.
   * Dates are aligned such that {@code 0001-01-01 (Minguo)} is {@code 1912-01-01 (ISO)}.
   *
   * <h3>Specification for implementors</h3>
   * This class is immutable and thread-safe.
   */
  public final class MinguoDate
          extends ChronoDateImpl<MinguoDate>
          implements Serializable {
  
      /**
       * Serialization version.
       */
      private static final long serialVersionUID = 1300372329181994526L;
  
      /**
       * The underlying date.
       */
      private final LocalDate isoDate;
  
      //-----------------------------------------------------------------------
      /**
       * Obtains the current {@code MinguoDate} from the system clock in the default time-zone.
       * <p>
       * This will query the {@link Clock#systemDefaultZone() system clock} in the default
       * time-zone to obtain the current date.
       * <p>
       * Using this method will prevent the ability to use an alternate clock for testing
       * because the clock is hard-coded.
       *
       * @return the current date using the system clock and default time-zone, not null
       */
      public static MinguoDate now() {
          return now(Clock.systemDefaultZone());
      }
  
      /**
       * Obtains the current {@code MinguoDate} from the system clock in the specified time-zone.
       * <p>
       * This will query the {@link Clock#system(ZoneId) system clock} to obtain the current date.
       * Specifying the time-zone avoids dependence on the default time-zone.
       * <p>
       * Using this method will prevent the ability to use an alternate clock for testing
       * because the clock is hard-coded.
       *
       * @param zone  the zone ID to use, not null
       * @return the current date using the system clock, not null
       */
      public static MinguoDate now(ZoneId zone) {
          return now(Clock.system(zone));
      }
  
      /**
       * Obtains the current {@code MinguoDate} from the specified clock.
       * <p>
       * This will query the specified clock to obtain the current date - today.
       * Using this method allows the use of an alternate clock for testing.
       * The alternate clock may be introduced using {@linkplain Clock dependency injection}.
       *
       * @param clock  the clock to use, not null
       * @return the current date, not null
       * @throws DateTimeException if the current date cannot be obtained
       */
      public static MinguoDate now(Clock clock) {
          return new MinguoDate(LocalDate.now(clock));
      }
  
      /**
       * Obtains a {@code MinguoDate} representing a date in the Minguo calendar
       * system from the proleptic-year, month-of-year and day-of-month fields.
       * <p>
       * This returns a {@code MinguoDate} with the specified fields.
       * The day must be valid for the year and month, otherwise an exception will be thrown.
       *
       * @param prolepticYear  the Minguo proleptic-year
       * @param month  the Minguo month-of-year, from 1 to 12
       * @param dayOfMonth  the Minguo day-of-month, from 1 to 31
       * @return the date in Minguo calendar system, not null
       * @throws DateTimeException if the value of any field is out of range,
       *  or if the day-of-month is invalid for the month-year
       */
      public static MinguoDate of(int prolepticYear, int month, int dayOfMonth) {
          return MinguoChronology.INSTANCE.date(prolepticYear, month, dayOfMonth);
      }
  
      /**
       * Obtains a {@code MinguoDate} from a temporal object.
       * <p>
       * This obtains a date in the Minguo calendar system based on the specified temporal.
       * A {@code TemporalAccessor} represents an arbitrary set of date and time information,
       * which this factory converts to an instance of {@code MinguoDate}.
       * <p>
       * The conversion typically uses the {@link ChronoField#EPOCH_DAY EPOCH_DAY}
       * field, which is standardized across calendar systems.
       * <p>
       * This method matches the signature of the functional interface {@link TemporalQuery}
       * allowing it to be used as a query via method reference, {@code MinguoDate::from}.
       *
       * @param temporal  the temporal object to convert, not null
       * @return the date in Minguo calendar system, not null
       * @throws DateTimeException if unable to convert to a {@code MinguoDate}
       */
      public static MinguoDate from(TemporalAccessor temporal) {
          return MinguoChronology.INSTANCE.date(temporal);
      }
  
      //-----------------------------------------------------------------------
      /**
       * Creates an instance from an ISO date.
       *
       * @param isoDate  the standard local date, validated not null
       */
      MinguoDate(LocalDate date) {
          Jdk8Methods.requireNonNull(date, "date");
          this.isoDate = date;
      }
  
      //-----------------------------------------------------------------------
      @Override
      public MinguoChronology getChronology() {
          return MinguoChronology.INSTANCE;
      }
  
      @Override
      public MinguoEra getEra() {
          return (MinguoEra) super.getEra();
      }
  
      @Override
      public int lengthOfMonth() {
          return isoDate.lengthOfMonth();
      }
  
      @Override
      public ValueRange range(TemporalField field) {
          if (field instanceof ChronoField) {
              if (isSupported(field)) {
                  ChronoField f = (ChronoField) field;
                  switch (f) {
                      case DAY_OF_MONTH:
                      case DAY_OF_YEAR:
                      case ALIGNED_WEEK_OF_MONTH:
                          return isoDate.range(field);
                      case YEAR_OF_ERA: {
                          ValueRange range = YEAR.range();
                          long max = (getProlepticYear() <= 0 ? -range.getMinimum() + 1 + YEARS_DIFFERENCE : range.getMaximum() - YEARS_DIFFERENCE);
                          return ValueRange.of(1, max);
                      }
                  }
                  return getChronology().range(f);
              }
              throw new UnsupportedTemporalTypeException("Unsupported field: " + field);
          }
          return field.rangeRefinedBy(this);
      }
  
      @Override
      public long getLong(TemporalField field) {
          if (field instanceof ChronoField) {
              switch ((ChronoField) field) {
                  case PROLEPTIC_MONTH:
                      return getProlepticMonth();
                  case YEAR_OF_ERA: {
                      int prolepticYear = getProlepticYear();
                      return (prolepticYear >= 1 ? prolepticYear : 1 - prolepticYear);
                  }
                  case YEAR:
                      return getProlepticYear();
                  case ERA:
                      return (getProlepticYear() >= 1 ? 1 : 0);
              }
              return isoDate.getLong(field);
          }
          return field.getFrom(this);
      }
  
      private long getProlepticMonth() {
          return getProlepticYear() * 12L + isoDate.getMonthValue() - 1;
      }
  
      private int getProlepticYear() {
          return isoDate.getYear() - YEARS_DIFFERENCE;
      }
  
      //-----------------------------------------------------------------------
      @Override
      public MinguoDate with(TemporalAdjuster adjuster) {
          return (MinguoDate) super.with(adjuster);
      }
  
      @Override
      public MinguoDate with(TemporalField field, long newValue) {
          if (field instanceof ChronoField) {
              ChronoField f = (ChronoField) field;
              if (getLong(f) == newValue) {
                  return this;
              }
              switch (f) {
                  case PROLEPTIC_MONTH:
                      getChronology().range(f).checkValidValue(newValue, f);
                      return plusMonths(newValue - getProlepticMonth());
                  case YEAR_OF_ERA:
                  case YEAR:
                  case ERA: {
                      int nvalue = getChronology().range(f).checkValidIntValue(newValue, f);
                      switch (f) {
                          case YEAR_OF_ERA:
                              return with(isoDate.withYear(getProlepticYear() >= 1 ? nvalue + YEARS_DIFFERENCE : (1 - nvalue)  + YEARS_DIFFERENCE));
                          case YEAR:
                              return with(isoDate.withYear(nvalue + YEARS_DIFFERENCE));
                          case ERA:
                              return with(isoDate.withYear((1 - getProlepticYear()) + YEARS_DIFFERENCE));
                      }
                  }
              }
              return with(isoDate.with(field, newValue));
          }
          return field.adjustInto(this, newValue);
      }
  
      @Override
      public MinguoDate plus(TemporalAmount amount) {
          return (MinguoDate) super.plus(amount);
      }
  
      @Override
      public MinguoDate plus(long amountToAdd, TemporalUnit unit) {
          return (MinguoDate) super.plus(amountToAdd, unit);
      }
  
      @Override
      public MinguoDate minus(TemporalAmount amount) {
          return (MinguoDate) super.minus(amount);
      }
  
      @Override
      public MinguoDate minus(long amountToAdd, TemporalUnit unit) {
          return (MinguoDate) super.minus(amountToAdd, unit);
      }
  
      //-----------------------------------------------------------------------
      @Override
      MinguoDate plusYears(long years) {
          return with(isoDate.plusYears(years));
      }
  
      @Override
      MinguoDate plusMonths(long months) {
          return with(isoDate.plusMonths(months));
      }
  
      @Override
      MinguoDate plusDays(long days) {
          return with(isoDate.plusDays(days));
      }
  
      private MinguoDate with(LocalDate newDate) {
          return (newDate.equals(isoDate) ? this : new MinguoDate(newDate));
      }
  
      @Override
      @SuppressWarnings("unchecked")
      public final ChronoLocalDateTime<MinguoDate> atTime(LocalTime localTime) {
          return (ChronoLocalDateTime<MinguoDate>) super.atTime(localTime);
      }
  
      @Override
      public ChronoPeriod until(ChronoLocalDate endDate) {
          Period period = isoDate.until(endDate);
          return getChronology().period(period.getYears(), period.getMonths(), period.getDays());
      }
  
      @Override  // override for performance
      public long toEpochDay() {
          return isoDate.toEpochDay();
      }
  
      //-------------------------------------------------------------------------
      @Override  // override for performance
      public boolean equals(Object obj) {
          if (this == obj) {
              return true;
          }
          if (obj instanceof MinguoDate) {
              MinguoDate otherDate = (MinguoDate) obj;
              return this.isoDate.equals(otherDate.isoDate);
          }
          return false;
      }
  
      @Override  // override for performance
      public int hashCode() {
          return getChronology().getId().hashCode() ^ isoDate.hashCode();
      }
  
      //-----------------------------------------------------------------------
      private Object writeReplace() {
          return new Ser(Ser.MINGUO_DATE_TYPE, this);
      }
  
      void writeExternal(DataOutput out) throws IOException {
          // MinguoChrono is implicit in the MINGUO_DATE_TYPE
          out.writeInt(get(YEAR));
          out.writeByte(get(MONTH_OF_YEAR));
          out.writeByte(get(DAY_OF_MONTH));
  
      }
  
      static ChronoLocalDate readExternal(DataInput in) throws IOException {
          int year = in.readInt();
          int month = in.readByte();
          int dayOfMonth = in.readByte();
          return MinguoChronology.INSTANCE.date(year, month, dayOfMonth);
      }
  
  
  }
  