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/*
* Copyright (c) 2012, Stephen Colebourne & Michael Nascimento Santos
*
* All rights reserved.
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package java.time.chrono;
import java.io.InvalidObjectException;
import static java.time.temporal.ChronoField.PROLEPTIC_MONTH;
import static java.time.temporal.ChronoField.YEAR;
import java.io.ObjectInputStream;
import java.io.Serializable;
import java.time.Clock;
import java.time.DateTimeException;
import java.time.Instant;
import java.time.LocalDate;
import java.time.ZoneId;
import java.time.format.ResolverStyle;
import java.time.temporal.ChronoField;
import java.time.temporal.TemporalAccessor;
import java.time.temporal.TemporalField;
import java.time.temporal.ValueRange;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
/**
* The Thai Buddhist calendar system.
*
* This chronology defines the rules of the Thai Buddhist calendar system.
* This calendar system is primarily used in Thailand.
* Dates are aligned such that {@code 2484-01-01 (Buddhist)} is {@code 1941-01-01 (ISO)}.
*
* The fields are defined as follows:
*
* - era - There are two eras, the current 'Buddhist' (ERA_BE) and the previous era (ERA_BEFORE_BE).
*
- 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 plus 543.
*
- 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 plus 543.
*
- month-of-year - The ThaiBuddhist month-of-year exactly matches ISO.
*
- day-of-month - The ThaiBuddhist day-of-month exactly matches ISO.
*
- day-of-year - The ThaiBuddhist day-of-year exactly matches ISO.
*
- leap-year - The ThaiBuddhist leap-year pattern exactly matches ISO, such that the two calendars
* are never out of step.
*
*
* @implSpec
* This class is immutable and thread-safe.
*
* @since 1.8
*/
public final class ThaiBuddhistChronology extends AbstractChronology implements Serializable {
/**
* Singleton instance of the Buddhist chronology.
*/
public static final ThaiBuddhistChronology INSTANCE = new ThaiBuddhistChronology();
/**
* Serialization version.
*/
private static final long serialVersionUID = 2775954514031616474L;
/**
* Containing the offset to add to the ISO year.
*/
static final int YEARS_DIFFERENCE = 543;
/**
* Narrow names for eras.
*/
private static final HashMap ERA_NARROW_NAMES = new HashMap<>();
/**
* Short names for eras.
*/
private static final HashMap ERA_SHORT_NAMES = new HashMap<>();
/**
* Full names for eras.
*/
private static final HashMap 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 = "th";
/**
* Name data.
*/
static {
ERA_NARROW_NAMES.put(FALLBACK_LANGUAGE, new String[]{"BB", "BE"});
ERA_NARROW_NAMES.put(TARGET_LANGUAGE, new String[]{"BB", "BE"});
ERA_SHORT_NAMES.put(FALLBACK_LANGUAGE, new String[]{"B.B.", "B.E."});
ERA_SHORT_NAMES.put(TARGET_LANGUAGE,
new String[]{"\u0e1e.\u0e28.",
"\u0e1b\u0e35\u0e01\u0e48\u0e2d\u0e19\u0e04\u0e23\u0e34\u0e2a\u0e15\u0e4c\u0e01\u0e32\u0e25\u0e17\u0e35\u0e48"});
ERA_FULL_NAMES.put(FALLBACK_LANGUAGE, new String[]{"Before Buddhist", "Budhhist Era"});
ERA_FULL_NAMES.put(TARGET_LANGUAGE,
new String[]{"\u0e1e\u0e38\u0e17\u0e18\u0e28\u0e31\u0e01\u0e23\u0e32\u0e0a",
"\u0e1b\u0e35\u0e01\u0e48\u0e2d\u0e19\u0e04\u0e23\u0e34\u0e2a\u0e15\u0e4c\u0e01\u0e32\u0e25\u0e17\u0e35\u0e48"});
}
/**
* Restricted constructor.
*/
private ThaiBuddhistChronology() {
}
//-----------------------------------------------------------------------
/**
* Gets the ID of the chronology - 'ThaiBuddhist'.
*
* The ID uniquely identifies the {@code Chronology}.
* It can be used to lookup the {@code Chronology} using {@link Chronology#of(String)}.
*
* @return the chronology ID - 'ThaiBuddhist'
* @see #getCalendarType()
*/
@Override
public String getId() {
return "ThaiBuddhist";
}
/**
* Gets the calendar type of the underlying calendar system - 'buddhist'.
*
* 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 Chronology#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 - 'buddhist'
* @see #getId()
*/
@Override
public String getCalendarType() {
return "buddhist";
}
//-----------------------------------------------------------------------
/**
* Obtains a local date in Thai Buddhist calendar system from the
* era, year-of-era, month-of-year and day-of-month fields.
*
* @param era the Thai Buddhist era, not null
* @param yearOfEra the year-of-era
* @param month the month-of-year
* @param dayOfMonth the day-of-month
* @return the Thai Buddhist local date, not null
* @throws DateTimeException if unable to create the date
* @throws ClassCastException if the {@code era} is not a {@code ThaiBuddhistEra}
*/
@Override
public ThaiBuddhistDate date(Era era, int yearOfEra, int month, int dayOfMonth) {
return date(prolepticYear(era, yearOfEra), month, dayOfMonth);
}
/**
* Obtains a local date in Thai Buddhist calendar system from the
* proleptic-year, month-of-year and day-of-month fields.
*
* @param prolepticYear the proleptic-year
* @param month the month-of-year
* @param dayOfMonth the day-of-month
* @return the Thai Buddhist local date, not null
* @throws DateTimeException if unable to create the date
*/
@Override
public ThaiBuddhistDate date(int prolepticYear, int month, int dayOfMonth) {
return new ThaiBuddhistDate(LocalDate.of(prolepticYear - YEARS_DIFFERENCE, month, dayOfMonth));
}
/**
* Obtains a local date in Thai Buddhist calendar system from the
* era, year-of-era and day-of-year fields.
*
* @param era the Thai Buddhist era, not null
* @param yearOfEra the year-of-era
* @param dayOfYear the day-of-year
* @return the Thai Buddhist local date, not null
* @throws DateTimeException if unable to create the date
* @throws ClassCastException if the {@code era} is not a {@code ThaiBuddhistEra}
*/
@Override
public ThaiBuddhistDate dateYearDay(Era era, int yearOfEra, int dayOfYear) {
return dateYearDay(prolepticYear(era, yearOfEra), dayOfYear);
}
/**
* Obtains a local date in Thai Buddhist calendar system from the
* proleptic-year and day-of-year fields.
*
* @param prolepticYear the proleptic-year
* @param dayOfYear the day-of-year
* @return the Thai Buddhist local date, not null
* @throws DateTimeException if unable to create the date
*/
@Override
public ThaiBuddhistDate dateYearDay(int prolepticYear, int dayOfYear) {
return new ThaiBuddhistDate(LocalDate.ofYearDay(prolepticYear - YEARS_DIFFERENCE, dayOfYear));
}
/**
* Obtains a local date in the Thai Buddhist calendar system from the epoch-day.
*
* @param epochDay the epoch day
* @return the Thai Buddhist local date, not null
* @throws DateTimeException if unable to create the date
*/
@Override // override with covariant return type
public ThaiBuddhistDate dateEpochDay(long epochDay) {
return new ThaiBuddhistDate(LocalDate.ofEpochDay(epochDay));
}
@Override
public ThaiBuddhistDate dateNow() {
return dateNow(Clock.systemDefaultZone());
}
@Override
public ThaiBuddhistDate dateNow(ZoneId zone) {
return dateNow(Clock.system(zone));
}
@Override
public ThaiBuddhistDate dateNow(Clock clock) {
return date(LocalDate.now(clock));
}
@Override
public ThaiBuddhistDate date(TemporalAccessor temporal) {
if (temporal instanceof ThaiBuddhistDate) {
return (ThaiBuddhistDate) temporal;
}
return new ThaiBuddhistDate(LocalDate.from(temporal));
}
@Override
@SuppressWarnings("unchecked")
public ChronoLocalDateTime localDateTime(TemporalAccessor temporal) {
return (ChronoLocalDateTime)super.localDateTime(temporal);
}
@Override
@SuppressWarnings("unchecked")
public ChronoZonedDateTime zonedDateTime(TemporalAccessor temporal) {
return (ChronoZonedDateTime)super.zonedDateTime(temporal);
}
@Override
@SuppressWarnings("unchecked")
public ChronoZonedDateTime zonedDateTime(Instant instant, ZoneId zone) {
return (ChronoZonedDateTime)super.zonedDateTime(instant, zone);
}
//-----------------------------------------------------------------------
/**
* Checks if the specified year is a leap year.
*
* Thai Buddhist 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 ThaiBuddhistEra == false) {
throw new ClassCastException("Era must be BuddhistEra");
}
return (era == ThaiBuddhistEra.BE ? yearOfEra : 1 - yearOfEra);
}
@Override
public ThaiBuddhistEra eraOf(int eraValue) {
return ThaiBuddhistEra.of(eraValue);
}
@Override
public List eras() {
return List.of(ThaiBuddhistEra.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.getMinimum() + YEARS_DIFFERENCE) + 1, range.getMaximum() + YEARS_DIFFERENCE);
}
case YEAR: {
ValueRange range = YEAR.range();
return ValueRange.of(range.getMinimum() + YEARS_DIFFERENCE, range.getMaximum() + YEARS_DIFFERENCE);
}
}
return field.range();
}
//-----------------------------------------------------------------------
@Override // override for return type
public ThaiBuddhistDate resolveDate(Map fieldValues, ResolverStyle resolverStyle) {
return (ThaiBuddhistDate) super.resolveDate(fieldValues, resolverStyle);
}
//-----------------------------------------------------------------------
/**
* Writes the Chronology using a
* dedicated serialized form.
* @serialData
*
* out.writeByte(1); // identifies a Chronology
* out.writeUTF(getId());
*
*
* @return the instance of {@code Ser}, not null
*/
@Override
Object writeReplace() {
return super.writeReplace();
}
/**
* Defend against malicious streams.
*
* @param s the stream to read
* @throws InvalidObjectException always
*/
private void readObject(ObjectInputStream s) throws InvalidObjectException {
throw new InvalidObjectException("Deserialization via serialization delegate");
}
}