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/*
* 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.
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* * 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.
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* * Neither the name of JSR-310 nor the names of its contributors
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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.
* <p>
* 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)}.
* <p>
* The fields are defined as follows:
* <ul>
* <li>era - There are two eras, the current 'Buddhist' (ERA_BE) and the previous era (ERA_BEFORE_BE).
* <li>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.
* <li>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.
* <li>month-of-year - The ThaiBuddhist month-of-year exactly matches ISO.
* <li>day-of-month - The ThaiBuddhist day-of-month exactly matches ISO.
* <li>day-of-year - The ThaiBuddhist day-of-year exactly matches ISO.
* <li>leap-year - The ThaiBuddhist leap-year pattern exactly matches ISO, such that the two calendars
* are never out of step.
* </ul>
*
* @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<
String,
String[]>
ERA_NARROW_NAMES = new
HashMap<>();
/**
* Short names for eras.
*/
private static final
HashMap<
String,
String[]>
ERA_SHORT_NAMES = new
HashMap<>();
/**
* Full names for eras.
*/
private static final
HashMap<
String,
String[]>
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'.
* <p>
* 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'.
* <p>
* The calendar type is an identifier defined by the
* <em>Unicode Locale Data Markup Language (LDML)</em> 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<
ThaiBuddhistDate>
localDateTime(
TemporalAccessor temporal) {
return (
ChronoLocalDateTime<
ThaiBuddhistDate>)super.localDateTime(
temporal);
}
@
Override
@
SuppressWarnings("unchecked")
public
ChronoZonedDateTime<
ThaiBuddhistDate>
zonedDateTime(
TemporalAccessor temporal) {
return (
ChronoZonedDateTime<
ThaiBuddhistDate>)super.zonedDateTime(
temporal);
}
@
Override
@
SuppressWarnings("unchecked")
public
ChronoZonedDateTime<
ThaiBuddhistDate>
zonedDateTime(
Instant instant,
ZoneId zone) {
return (
ChronoZonedDateTime<
ThaiBuddhistDate>)super.zonedDateTime(
instant,
zone);
}
//-----------------------------------------------------------------------
/**
* Checks if the specified year is a leap year.
* <p>
* 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<
Era>
eras() {
return
Arrays.<
Era>
asList(
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<
TemporalField,
Long>
fieldValues,
ResolverStyle resolverStyle) {
return (
ThaiBuddhistDate) super.resolveDate(
fieldValues,
resolverStyle);
}
//-----------------------------------------------------------------------
/**
* Writes the Chronology using a
* <a href="../../../serialized-form.html#java.time.chrono.Ser">dedicated serialized form</a>.
* @serialData
* <pre>
* out.writeByte(1); // identifies a Chronology
* out.writeUTF(getId());
* </pre>
*
* @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");
}
}