org.threeten.bp.chrono.MinguoChronology Maven / Gradle / Ivy
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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
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* 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.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 Minguo calendar system.
*
* This chronology defines the rules of the Minguo calendar system.
* 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)}.
*
* The fields are defined as follows:
*
* - era - There are two eras, the current 'Republic' (ROC) and the previous era (BEFORE_ROC).
*
- year-of-era - The year-of-era for the current era increases uniformly from the epoch at year one.
* For the previous era the year increases from one as time goes backwards.
* The value for the current era is equal to the ISO proleptic-year minus 1911.
*
- proleptic-year - The proleptic year is the same as the year-of-era for the
* current era. For the previous era, years have zero, then negative values.
* The value is equal to the ISO proleptic-year minus 1911.
*
- month-of-year - The Minguo month-of-year exactly matches ISO.
*
- day-of-month - The Minguo day-of-month exactly matches ISO.
*
- day-of-year - The Minguo day-of-year exactly matches ISO.
*
- leap-year - The Minguo leap-year pattern exactly matches ISO, such that the two calendars
* are never out of step.
*
*
*
Specification for implementors
* This class is immutable and thread-safe.
*/
public final class MinguoChronology extends Chronology implements Serializable {
/**
* Singleton instance for the Minguo chronology.
*/
public static final MinguoChronology INSTANCE = new MinguoChronology();
/**
* Serialization version.
*/
private static final long serialVersionUID = 1039765215346859963L;
/**
* The difference in years between ISO and Minguo.
*/
static final int YEARS_DIFFERENCE = 1911;
/**
* Restricted constructor.
*/
private MinguoChronology() {
}
/**
* Resolve singleton.
*
* @return the singleton instance, not null
*/
private Object readResolve() {
return INSTANCE;
}
//-----------------------------------------------------------------------
/**
* Gets the ID of the chronology - 'Minguo'.
*
* The ID uniquely identifies the {@code Chronology}.
* It can be used to lookup the {@code Chronology} using {@link #of(String)}.
*
* @return the chronology ID - 'Minguo'
* @see #getCalendarType()
*/
@Override
public String getId() {
return "Minguo";
}
/**
* Gets the calendar type of the underlying calendar system - 'roc'.
*
* 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 - 'roc'
* @see #getId()
*/
@Override
public String getCalendarType() {
return "roc";
}
//-----------------------------------------------------------------------
@Override // override with covariant return type
public MinguoDate date(Era era, int yearOfEra, int month, int dayOfMonth) {
return (MinguoDate) super.date(era, yearOfEra, month, dayOfMonth);
}
@Override // override with covariant return type
public MinguoDate date(int prolepticYear, int month, int dayOfMonth) {
return new MinguoDate(LocalDate.of(prolepticYear + YEARS_DIFFERENCE, month, dayOfMonth));
}
@Override // override with covariant return type
public MinguoDate dateYearDay(Era era, int yearOfEra, int dayOfYear) {
return (MinguoDate) super.dateYearDay(era, yearOfEra, dayOfYear);
}
@Override // override with covariant return type
public MinguoDate dateYearDay(int prolepticYear, int dayOfYear) {
return new MinguoDate(LocalDate.ofYearDay(prolepticYear + YEARS_DIFFERENCE, dayOfYear));
}
@Override
public MinguoDate dateEpochDay(long epochDay) {
return new MinguoDate(LocalDate.ofEpochDay(epochDay));
}
//-----------------------------------------------------------------------
@Override // override with covariant return type
public MinguoDate date(TemporalAccessor temporal) {
if (temporal instanceof MinguoDate) {
return (MinguoDate) temporal;
}
return new MinguoDate(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 MinguoDate dateNow() {
return (MinguoDate) super.dateNow();
}
@Override // override with covariant return type
public MinguoDate dateNow(ZoneId zone) {
return (MinguoDate) super.dateNow(zone);
}
@Override // override with covariant return type
public MinguoDate dateNow(Clock clock) {
Jdk8Methods.requireNonNull(clock, "clock");
return (MinguoDate) super.dateNow(clock);
}
//-----------------------------------------------------------------------
/**
* Checks if the specified year is a leap year.
*
* Minguo 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 + YEARS_DIFFERENCE);
}
@Override
public int prolepticYear(Era era, int yearOfEra) {
if (era instanceof MinguoEra == false) {
throw new ClassCastException("Era must be MinguoEra");
}
return (era == MinguoEra.ROC ? yearOfEra : 1 - yearOfEra);
}
@Override
public MinguoEra eraOf(int eraValue) {
return MinguoEra.of(eraValue);
}
@Override
public List eras() {
return Arrays.asList(MinguoEra.values());
}
//-----------------------------------------------------------------------
@Override
public ValueRange range(ChronoField field) {
switch (field) {
case PROLEPTIC_MONTH: {
ValueRange range = PROLEPTIC_MONTH.range();
return ValueRange.of(range.getMinimum() - YEARS_DIFFERENCE * 12L, range.getMaximum() - YEARS_DIFFERENCE * 12L);
}
case YEAR_OF_ERA: {
ValueRange range = YEAR.range();
return ValueRange.of(1, range.getMaximum() - YEARS_DIFFERENCE, -range.getMinimum() + 1 + YEARS_DIFFERENCE);
}
case YEAR: {
ValueRange range = YEAR.range();
return ValueRange.of(range.getMinimum() - YEARS_DIFFERENCE, range.getMaximum() - YEARS_DIFFERENCE);
}
}
return field.range();
}
@Override
public MinguoDate 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 yoeLong = fieldValues.remove(YEAR_OF_ERA);
if (yoeLong != null) {
if (resolverStyle != ResolverStyle.LENIENT) {
YEAR_OF_ERA.checkValidValue(yoeLong);
}
Long era = fieldValues.remove(ERA);
if (era == null) {
Long year = fieldValues.get(YEAR);
if (resolverStyle == ResolverStyle.STRICT) {
// do not invent era if strict, but do cross-check with year
if (year != null) {
updateResolveMap(fieldValues, YEAR, (year > 0 ? yoeLong: Jdk8Methods.safeSubtract(1, yoeLong)));
} else {
// reinstate the field removed earlier, no cross-check issues
fieldValues.put(YEAR_OF_ERA, yoeLong);
}
} else {
// invent era
updateResolveMap(fieldValues, YEAR, (year == null || year > 0 ? yoeLong: Jdk8Methods.safeSubtract(1, yoeLong)));
}
} else if (era.longValue() == 1L) {
updateResolveMap(fieldValues, YEAR, yoeLong);
} else if (era.longValue() == 0L) {
updateResolveMap(fieldValues, YEAR, Jdk8Methods.safeSubtract(1, yoeLong));
} else {
throw new DateTimeException("Invalid value for era: " + era);
}
} else if (fieldValues.containsKey(ERA)) {
ERA.checkValidValue(fieldValues.get(ERA)); // always validated
}
// 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));
MinguoDate 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));
MinguoDate 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));
MinguoDate 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));
MinguoDate 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;
}
}