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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.
*
* * 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
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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*/
package java.time.calendar;
import static java.time.calendar.ThaiBuddhistChrono.YEARS_DIFFERENCE;
import static java.time.temporal.ChronoField.DAY_OF_MONTH;
import static java.time.temporal.ChronoField.MONTH_OF_YEAR;
import static java.time.temporal.ChronoField.YEAR;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.io.Serializable;
import java.time.DateTimeException;
import java.time.LocalDate;
import java.time.temporal.ChronoField;
import java.time.temporal.ChronoLocalDate;
import java.time.temporal.TemporalField;
import java.time.temporal.ValueRange;
import java.util.Objects;
/**
* A date in the Thai Buddhist calendar system.
*
* This implements {@code ChronoLocalDate} for the {@link ThaiBuddhistChrono Thai Buddhist calendar}.
*
*
Specification for implementors
* This class is immutable and thread-safe.
*
* @since 1.8
*/
final class ThaiBuddhistDate
extends ChronoDateImpl
implements ChronoLocalDate, Serializable {
// this class is package-scoped so that future conversion to public
// would not change serialization
/**
* Serialization version.
*/
private static final long serialVersionUID = -8722293800195731463L;
/**
* The underlying date.
*/
private final LocalDate isoDate;
/**
* Creates an instance from an ISO date.
*
* @param isoDate the standard local date, validated not null
*/
ThaiBuddhistDate(LocalDate isoDate) {
Objects.requireNonNull(isoDate, "isoDate");
this.isoDate = isoDate;
}
//-----------------------------------------------------------------------
@Override
public ThaiBuddhistChrono getChrono() {
return ThaiBuddhistChrono.INSTANCE;
}
@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() + YEARS_DIFFERENCE) + 1 : range.getMaximum() + YEARS_DIFFERENCE);
return ValueRange.of(1, max);
}
}
return getChrono().range(f);
}
throw new DateTimeException("Unsupported field: " + field.getName());
}
return field.doRange(this);
}
@Override
public long getLong(TemporalField field) {
if (field instanceof ChronoField) {
switch ((ChronoField) field) {
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.doGet(this);
}
private int getProlepticYear() {
return isoDate.getYear() + YEARS_DIFFERENCE;
}
//-----------------------------------------------------------------------
@Override
public ThaiBuddhistDate with(TemporalField field, long newValue) {
if (field instanceof ChronoField) {
ChronoField f = (ChronoField) field;
if (getLong(f) == newValue) {
return this;
}
switch (f) {
case YEAR_OF_ERA:
case YEAR:
case ERA: {
f.checkValidValue(newValue);
int nvalue = (int) newValue;
switch (f) {
case YEAR_OF_ERA:
return with(isoDate.withYear((getProlepticYear() >= 1 ? nvalue : 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 (ThaiBuddhistDate) ChronoLocalDate.super.with(field, newValue);
}
//-----------------------------------------------------------------------
@Override
ThaiBuddhistDate plusYears(long years) {
return with(isoDate.plusYears(years));
}
@Override
ThaiBuddhistDate plusMonths(long months) {
return with(isoDate.plusMonths(months));
}
@Override
ThaiBuddhistDate plusDays(long days) {
return with(isoDate.plusDays(days));
}
private ThaiBuddhistDate with(LocalDate newDate) {
return (newDate.equals(isoDate) ? this : new ThaiBuddhistDate(newDate));
}
@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 ThaiBuddhistDate) {
ThaiBuddhistDate otherDate = (ThaiBuddhistDate) obj;
return this.isoDate.equals(otherDate.isoDate);
}
return false;
}
@Override // override for performance
public int hashCode() {
return getChrono().getId().hashCode() ^ isoDate.hashCode();
}
//-----------------------------------------------------------------------
private Object writeReplace() {
return new Ser(Ser.THAIBUDDHIST_DATE_TYPE, this);
}
void writeExternal(DataOutput out) throws IOException {
// MinguoChrono is implicit in the THAIBUDDHIST_DATE_TYPE
out.writeInt(this.get(YEAR));
out.writeByte(this.get(MONTH_OF_YEAR));
out.writeByte(this.get(DAY_OF_MONTH));
}
static ChronoLocalDate readExternal(DataInput in) throws IOException {
int year = in.readInt();
int month = in.readByte();
int dayOfMonth = in.readByte();
return ThaiBuddhistChrono.INSTANCE.date(year, month, dayOfMonth);
}
}