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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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/*
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* Copyright (c) 2007-2012, 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:
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* * 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
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* may be used to endorse or promote products derived from this software
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package java.time.chrono;
import static java.time.temporal.
ChronoField.
EPOCH_DAY;
import java.io.
IOException;
import java.io.
InvalidObjectException;
import java.io.
ObjectInput;
import java.io.
ObjectInputStream;
import java.io.
ObjectOutput;
import java.io.
Serializable;
import java.time.
LocalTime;
import java.time.
ZoneId;
import java.time.temporal.
ChronoField;
import java.time.temporal.
ChronoUnit;
import java.time.temporal.
Temporal;
import java.time.temporal.
TemporalAdjuster;
import java.time.temporal.
TemporalField;
import java.time.temporal.
TemporalUnit;
import java.time.temporal.
ValueRange;
import java.util.
Objects;
/**
* A date-time without a time-zone for the calendar neutral API.
* <p>
* {@code ChronoLocalDateTime} is an immutable date-time object that represents a date-time, often
* viewed as year-month-day-hour-minute-second. This object can also access other
* fields such as day-of-year, day-of-week and week-of-year.
* <p>
* This class stores all date and time fields, to a precision of nanoseconds.
* It does not store or represent a time-zone. For example, the value
* "2nd October 2007 at 13:45.30.123456789" can be stored in an {@code ChronoLocalDateTime}.
*
* @implSpec
* This class is immutable and thread-safe.
* @serial
* @param <D> the concrete type for the date of this date-time
* @since 1.8
*/
final class
ChronoLocalDateTimeImpl<D extends
ChronoLocalDate>
implements
ChronoLocalDateTime<D>,
Temporal,
TemporalAdjuster,
Serializable {
/**
* Serialization version.
*/
private static final long
serialVersionUID = 4556003607393004514L;
/**
* Hours per day.
*/
static final int
HOURS_PER_DAY = 24;
/**
* Minutes per hour.
*/
static final int
MINUTES_PER_HOUR = 60;
/**
* Minutes per day.
*/
static final int
MINUTES_PER_DAY =
MINUTES_PER_HOUR *
HOURS_PER_DAY;
/**
* Seconds per minute.
*/
static final int
SECONDS_PER_MINUTE = 60;
/**
* Seconds per hour.
*/
static final int
SECONDS_PER_HOUR =
SECONDS_PER_MINUTE *
MINUTES_PER_HOUR;
/**
* Seconds per day.
*/
static final int
SECONDS_PER_DAY =
SECONDS_PER_HOUR *
HOURS_PER_DAY;
/**
* Milliseconds per day.
*/
static final long
MILLIS_PER_DAY =
SECONDS_PER_DAY * 1000L;
/**
* Microseconds per day.
*/
static final long
MICROS_PER_DAY =
SECONDS_PER_DAY * 1000_000L;
/**
* Nanos per second.
*/
static final long
NANOS_PER_SECOND = 1000_000_000L;
/**
* Nanos per minute.
*/
static final long
NANOS_PER_MINUTE =
NANOS_PER_SECOND *
SECONDS_PER_MINUTE;
/**
* Nanos per hour.
*/
static final long
NANOS_PER_HOUR =
NANOS_PER_MINUTE *
MINUTES_PER_HOUR;
/**
* Nanos per day.
*/
static final long
NANOS_PER_DAY =
NANOS_PER_HOUR *
HOURS_PER_DAY;
/**
* The date part.
*/
private final transient D
date;
/**
* The time part.
*/
private final transient
LocalTime time;
//-----------------------------------------------------------------------
/**
* Obtains an instance of {@code ChronoLocalDateTime} from a date and time.
*
* @param date the local date, not null
* @param time the local time, not null
* @return the local date-time, not null
*/
static <R extends
ChronoLocalDate>
ChronoLocalDateTimeImpl<R>
of(R
date,
LocalTime time) {
return new
ChronoLocalDateTimeImpl<>(
date,
time);
}
/**
* Casts the {@code Temporal} to {@code ChronoLocalDateTime} ensuring it bas the specified chronology.
*
* @param chrono the chronology to check for, not null
* @param temporal a date-time to cast, not null
* @return the date-time checked and cast to {@code ChronoLocalDateTime}, not null
* @throws ClassCastException if the date-time cannot be cast to ChronoLocalDateTimeImpl
* or the chronology is not equal this Chronology
*/
static <R extends
ChronoLocalDate>
ChronoLocalDateTimeImpl<R>
ensureValid(
Chronology chrono,
Temporal temporal) {
@
SuppressWarnings("unchecked")
ChronoLocalDateTimeImpl<R>
other = (
ChronoLocalDateTimeImpl<R>)
temporal;
if (
chrono.
equals(
other.
getChronology()) == false) {
throw new
ClassCastException("Chronology mismatch, required: " +
chrono.
getId()
+ ", actual: " +
other.
getChronology().
getId());
}
return
other;
}
/**
* Constructor.
*
* @param date the date part of the date-time, not null
* @param time the time part of the date-time, not null
*/
private
ChronoLocalDateTimeImpl(D
date,
LocalTime time) {
Objects.
requireNonNull(
date, "date");
Objects.
requireNonNull(
time, "time");
this.
date =
date;
this.
time =
time;
}
/**
* Returns a copy of this date-time with the new date and time, checking
* to see if a new object is in fact required.
*
* @param newDate the date of the new date-time, not null
* @param newTime the time of the new date-time, not null
* @return the date-time, not null
*/
private
ChronoLocalDateTimeImpl<D>
with(
Temporal newDate,
LocalTime newTime) {
if (
date ==
newDate &&
time ==
newTime) {
return this;
}
// Validate that the new Temporal is a ChronoLocalDate (and not something else)
D
cd =
ChronoLocalDateImpl.
ensureValid(
date.
getChronology(),
newDate);
return new
ChronoLocalDateTimeImpl<>(
cd,
newTime);
}
//-----------------------------------------------------------------------
@
Override
public D
toLocalDate() {
return
date;
}
@
Override
public
LocalTime toLocalTime() {
return
time;
}
//-----------------------------------------------------------------------
@
Override
public boolean
isSupported(
TemporalField field) {
if (
field instanceof
ChronoField) {
ChronoField f = (
ChronoField)
field;
return
f.
isDateBased() ||
f.
isTimeBased();
}
return
field != null &&
field.
isSupportedBy(this);
}
@
Override
public
ValueRange range(
TemporalField field) {
if (
field instanceof
ChronoField) {
ChronoField f = (
ChronoField)
field;
return (
f.
isTimeBased() ?
time.
range(
field) :
date.
range(
field));
}
return
field.
rangeRefinedBy(this);
}
@
Override
public int
get(
TemporalField field) {
if (
field instanceof
ChronoField) {
ChronoField f = (
ChronoField)
field;
return (
f.
isTimeBased() ?
time.
get(
field) :
date.
get(
field));
}
return
range(
field).
checkValidIntValue(
getLong(
field),
field);
}
@
Override
public long
getLong(
TemporalField field) {
if (
field instanceof
ChronoField) {
ChronoField f = (
ChronoField)
field;
return (
f.
isTimeBased() ?
time.
getLong(
field) :
date.
getLong(
field));
}
return
field.
getFrom(this);
}
//-----------------------------------------------------------------------
@
SuppressWarnings("unchecked")
@
Override
public
ChronoLocalDateTimeImpl<D>
with(
TemporalAdjuster adjuster) {
if (
adjuster instanceof
ChronoLocalDate) {
// The Chronology is checked in with(date,time)
return
with((
ChronoLocalDate)
adjuster,
time);
} else if (
adjuster instanceof
LocalTime) {
return
with(
date, (
LocalTime)
adjuster);
} else if (
adjuster instanceof
ChronoLocalDateTimeImpl) {
return
ChronoLocalDateTimeImpl.
ensureValid(
date.
getChronology(), (
ChronoLocalDateTimeImpl<?>)
adjuster);
}
return
ChronoLocalDateTimeImpl.
ensureValid(
date.
getChronology(), (
ChronoLocalDateTimeImpl<?>)
adjuster.
adjustInto(this));
}
@
Override
public
ChronoLocalDateTimeImpl<D>
with(
TemporalField field, long
newValue) {
if (
field instanceof
ChronoField) {
ChronoField f = (
ChronoField)
field;
if (
f.
isTimeBased()) {
return
with(
date,
time.
with(
field,
newValue));
} else {
return
with(
date.
with(
field,
newValue),
time);
}
}
return
ChronoLocalDateTimeImpl.
ensureValid(
date.
getChronology(),
field.
adjustInto(this,
newValue));
}
//-----------------------------------------------------------------------
@
Override
public
ChronoLocalDateTimeImpl<D>
plus(long
amountToAdd,
TemporalUnit unit) {
if (
unit instanceof
ChronoUnit) {
ChronoUnit f = (
ChronoUnit)
unit;
switch (
f) {
case
NANOS: return
plusNanos(
amountToAdd);
case
MICROS: return
plusDays(
amountToAdd /
MICROS_PER_DAY).
plusNanos((
amountToAdd %
MICROS_PER_DAY) * 1000);
case
MILLIS: return
plusDays(
amountToAdd /
MILLIS_PER_DAY).
plusNanos((
amountToAdd %
MILLIS_PER_DAY) * 1000000);
case
SECONDS: return
plusSeconds(
amountToAdd);
case
MINUTES: return
plusMinutes(
amountToAdd);
case
HOURS: return
plusHours(
amountToAdd);
case
HALF_DAYS: return
plusDays(
amountToAdd / 256).
plusHours((
amountToAdd % 256) * 12); // no overflow (256 is multiple of 2)
}
return
with(
date.
plus(
amountToAdd,
unit),
time);
}
return
ChronoLocalDateTimeImpl.
ensureValid(
date.
getChronology(),
unit.
addTo(this,
amountToAdd));
}
private
ChronoLocalDateTimeImpl<D>
plusDays(long
days) {
return
with(
date.
plus(
days,
ChronoUnit.
DAYS),
time);
}
private
ChronoLocalDateTimeImpl<D>
plusHours(long
hours) {
return
plusWithOverflow(
date,
hours, 0, 0, 0);
}
private
ChronoLocalDateTimeImpl<D>
plusMinutes(long
minutes) {
return
plusWithOverflow(
date, 0,
minutes, 0, 0);
}
ChronoLocalDateTimeImpl<D>
plusSeconds(long
seconds) {
return
plusWithOverflow(
date, 0, 0,
seconds, 0);
}
private
ChronoLocalDateTimeImpl<D>
plusNanos(long
nanos) {
return
plusWithOverflow(
date, 0, 0, 0,
nanos);
}
//-----------------------------------------------------------------------
private
ChronoLocalDateTimeImpl<D>
plusWithOverflow(D
newDate, long
hours, long
minutes, long
seconds, long
nanos) {
// 9223372036854775808 long, 2147483648 int
if ((
hours |
minutes |
seconds |
nanos) == 0) {
return
with(
newDate,
time);
}
long
totDays =
nanos /
NANOS_PER_DAY + // max/24*60*60*1B
seconds /
SECONDS_PER_DAY + // max/24*60*60
minutes /
MINUTES_PER_DAY + // max/24*60
hours /
HOURS_PER_DAY; // max/24
long
totNanos =
nanos %
NANOS_PER_DAY + // max 86400000000000
(
seconds %
SECONDS_PER_DAY) *
NANOS_PER_SECOND + // max 86400000000000
(
minutes %
MINUTES_PER_DAY) *
NANOS_PER_MINUTE + // max 86400000000000
(
hours %
HOURS_PER_DAY) *
NANOS_PER_HOUR; // max 86400000000000
long
curNoD =
time.
toNanoOfDay(); // max 86400000000000
totNanos =
totNanos +
curNoD; // total 432000000000000
totDays +=
Math.
floorDiv(
totNanos,
NANOS_PER_DAY);
long
newNoD =
Math.
floorMod(
totNanos,
NANOS_PER_DAY);
LocalTime newTime = (
newNoD ==
curNoD ?
time :
LocalTime.
ofNanoOfDay(
newNoD));
return
with(
newDate.
plus(
totDays,
ChronoUnit.
DAYS),
newTime);
}
//-----------------------------------------------------------------------
@
Override
public
ChronoZonedDateTime<D>
atZone(
ZoneId zone) {
return
ChronoZonedDateTimeImpl.
ofBest(this,
zone, null);
}
//-----------------------------------------------------------------------
@
Override
public long
until(
Temporal endExclusive,
TemporalUnit unit) {
Objects.
requireNonNull(
endExclusive, "endExclusive");
@
SuppressWarnings("unchecked")
ChronoLocalDateTime<D>
end = (
ChronoLocalDateTime<D>)
getChronology().
localDateTime(
endExclusive);
if (
unit instanceof
ChronoUnit) {
if (
unit.
isTimeBased()) {
long
amount =
end.
getLong(
EPOCH_DAY) -
date.
getLong(
EPOCH_DAY);
switch ((
ChronoUnit)
unit) {
case
NANOS:
amount =
Math.
multiplyExact(
amount,
NANOS_PER_DAY); break;
case
MICROS:
amount =
Math.
multiplyExact(
amount,
MICROS_PER_DAY); break;
case
MILLIS:
amount =
Math.
multiplyExact(
amount,
MILLIS_PER_DAY); break;
case
SECONDS:
amount =
Math.
multiplyExact(
amount,
SECONDS_PER_DAY); break;
case
MINUTES:
amount =
Math.
multiplyExact(
amount,
MINUTES_PER_DAY); break;
case
HOURS:
amount =
Math.
multiplyExact(
amount,
HOURS_PER_DAY); break;
case
HALF_DAYS:
amount =
Math.
multiplyExact(
amount, 2); break;
}
return
Math.
addExact(
amount,
time.
until(
end.
toLocalTime(),
unit));
}
ChronoLocalDate endDate =
end.
toLocalDate();
if (
end.
toLocalTime().
isBefore(
time)) {
endDate =
endDate.
minus(1,
ChronoUnit.
DAYS);
}
return
date.
until(
endDate,
unit);
}
Objects.
requireNonNull(
unit, "unit");
return
unit.
between(this,
end);
}
//-----------------------------------------------------------------------
/**
* Writes the ChronoLocalDateTime using a
* <a href="../../../serialized-form.html#java.time.chrono.Ser">dedicated serialized form</a>.
* @serialData
* <pre>
* out.writeByte(2); // identifies a ChronoLocalDateTime
* out.writeObject(toLocalDate());
* out.witeObject(toLocalTime());
* </pre>
*
* @return the instance of {@code Ser}, not null
*/
private
Object writeReplace() {
return new
Ser(
Ser.
CHRONO_LOCAL_DATE_TIME_TYPE, this);
}
/**
* 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");
}
void
writeExternal(
ObjectOutput out) throws
IOException {
out.
writeObject(
date);
out.
writeObject(
time);
}
static
ChronoLocalDateTime<?>
readExternal(
ObjectInput in) throws
IOException,
ClassNotFoundException {
ChronoLocalDate date = (
ChronoLocalDate)
in.
readObject();
LocalTime time = (
LocalTime)
in.
readObject();
return
date.
atTime(
time);
}
//-----------------------------------------------------------------------
@
Override
public boolean
equals(
Object obj) {
if (this ==
obj) {
return true;
}
if (
obj instanceof
ChronoLocalDateTime) {
return
compareTo((
ChronoLocalDateTime<?>)
obj) == 0;
}
return false;
}
@
Override
public int
hashCode() {
return
toLocalDate().
hashCode() ^
toLocalTime().
hashCode();
}
@
Override
public
String toString() {
return
toLocalDate().
toString() + 'T' +
toLocalTime().
toString();
}
}