/*
* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* 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
* 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 java.time.calendar;
import static java.time.calendar.MinguoChrono.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 Minguo calendar system.
*
* This implements {@code ChronoLocalDate} for the {@link MinguoChrono Minguo calendar}.
*
*
Specification for implementors
* This class is immutable and thread-safe.
*
* @since 1.8
*/
final class MinguoDate
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 = 1300372329181994526L;
/**
* The underlying date.
*/
private final LocalDate isoDate;
/**
* Creates an instance from an ISO date.
*
* @param isoDate the standard local date, validated not null
*/
MinguoDate(LocalDate isoDate) {
Objects.requireNonNull(isoDate, "isoDate");
this.isoDate = isoDate;
}
//-----------------------------------------------------------------------
@Override
public MinguoChrono getChrono() {
return MinguoChrono.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() + 1 + YEARS_DIFFERENCE : 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 MinguoDate 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 + 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 (MinguoDate) ChronoLocalDate.super.with(field, newValue);
}
//-----------------------------------------------------------------------
@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 // 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 getChrono().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 MinguoChrono.INSTANCE.date(year, month, dayOfMonth);
}
}