@js-joda/extra
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additional date-time classes that complement those in js-joda
1,177 lines (1,121 loc) • 53.8 kB
JavaScript
/**
* @copyright (c) 2016, Philipp Thürwächter & Pattrick Hüper & Michał Sobkiewicz
* @copyright (c) 2007-present, Stephen Colebourne & Michael Nascimento Santos
* @license BSD-3-Clause (see LICENSE in the root directory of this source tree)
*/
import { ChronoField, ChronoUnit, Clock, DateTimeException, DateTimeFormatter, IllegalArgumentException, IsoChronology, LocalDate, OffsetDateTime, Temporal, TemporalField, TemporalQueries, TemporalQuery, TemporalUnit, ZoneId, ZoneOffset } from '@js-joda/core';
// TODO: hm... is this a good idea?? copied from joda currently, could we add a js-joda-utils module??
import { requireInstance, requireNonNull } from './assert';
import { _ as jodaInternal } from '@js-joda/core';
const MathUtil = jodaInternal.MathUtil;
/**
* The number of seconds per day.
*/
const SECONDS_PER_DAY = 86400;
/**
* A date with an offset from UTC/Greenwich in the ISO-8601 calendar system,
* such as `2007-12-03+01:00`.
*
* `OffsetDate` is an immutable date-time object that represents a date, often viewed
* as year-month-day-offset. This object can also access other date fields such as
* day-of-year, day-of-week and week-of-year.
*
* This class does not store or represent a time.
* For example, the value '2nd October 2007 +02:00' can be stored
* in an `OffsetDate`.
*
*/
export class OffsetDate extends Temporal {
//-----------------------------------------------------------------------
/**
* function overloading for {@link OffsetDate.now}
* - if called with 0 argument {@link OffsetDate._now0} is executed,
* - if called with 1 argument and first argument is an instance of ZoneId, then {@link OffsetDate._nowZoneId} is executed,
* - otherwise {@link OffsetDate._nowClock} is executed
*
* @param {?(ZoneId|Clock)} zoneIdOrClock
* @return {YearQuarter}
*/
static now(zoneIdOrClock) {
if (arguments.length === 0) {
return OffsetDate._now0();
} else if (arguments.length === 1 && zoneIdOrClock instanceof ZoneId) {
return OffsetDate._nowZoneId(zoneIdOrClock);
} else {
return OffsetDate._nowClock(zoneIdOrClock);
}
}
//-----------------------------------------------------------------------
/**
* Obtains the current date from the system clock in the default time-zone.
*
* This will query the {@link Clock.systemDefaultZone} system clock in the default
* time-zone to obtain the current date.
* The offset will be calculated from the time-zone in the clock.
*
* Using this method will prevent the ability to use an alternate clock for testing
* because the clock is hard-coded.
*
* @return {OffsetDate} the current date using the system clock, not null
* @protected
*/
static _now0() {
return OffsetDate.now(Clock.systemDefaultZone());
}
/**
* Obtains the current date from the system clock in the specified time-zone.
*
* This will query the {@link Clock.system} system clock to obtain the current date.
* Specifying the time-zone avoids dependence on the default time-zone.
* The offset will be calculated from the specified time-zone.
*
* Using this method will prevent the ability to use an alternate clock for testing
* because the clock is hard-coded.
*
* @param {ZoneId} zone - the zone ID to use, not null
* @return {OffsetDate} the current date using the system clock, not null
* @protected
*/
static _nowZoneId(zone) {
return OffsetDate.now(Clock.system(zone));
}
/**
* Obtains the current date from the specified clock.
*
* This will query the specified clock to obtain the current date - today.
* The offset will be calculated from the time-zone in the clock.
*
* Using this method allows the use of an alternate clock for testing.
* The alternate clock may be introduced using {@link Clock} dependency injection.
*
* @param {Clock} clock - the clock to use, not null
* @return {OffsetDate} the current date, not null
* @protected
*/
static _nowClock(clock) {
requireNonNull(clock, 'clock');
const now = clock.instant(); // called once
return OffsetDate.ofInstant(now, clock.zone().rules().offset(now));
}
//-----------------------------------------------------------------------
/**
* function overloading for {@link OffsetDate.of}
* - if called with 2 arguments {@link OffsetDate._ofLocalDateZoneOffset} is executed,
* - if called with 4 agruments {@link OffsetDate._ofIntIntIntZoneOffset} is executed,
* - otherwise throws IllegalArgumentException.
*
* @return {YearQuarter}
*/
static of() {
switch (arguments.length) {
case 2: return OffsetDate._ofLocalDateZoneOffset(...arguments);
case 4: return OffsetDate._ofIntIntIntZoneOffset(...arguments);
default: throw new IllegalArgumentException('Illegal number of arguments');
}
}
/**
* Obtains an instance of `OffsetDate` from a local date and an offset.
*
* @param {LocalDate} date - the local date, not null
* @param {ZoneOffset} offset - the zone offset, not null
* @return {OffsetDate} the offset date, not null
* @protected
*/
static _ofLocalDateZoneOffset(date, offset) {
return new OffsetDate(date, offset);
}
/**
* Obtains an instance of `OffsetDate` from a year, month, day
* and offset.
*
* This creates an offset date with the four specified fields.
*
* This method exists primarily for writing test cases.
* Non test-code will typically use other methods to create an offset time.
*
* @param {number} year - the year to represent, from MIN_YEAR to MAX_YEAR
* @param {number} month - the month-of-year to represent, from 1 (January) to 12 (December)
* @param {number} dayOfMonth - the day-of-month to represent, from 1 to 31
* @param {ZoneOffset} offset - the zone offset, not null
* @return {OffsetDate} the offset date, not null
* @throws {DateTimeException} if the value of any field is out of range, or
* if the day-of-month is invalid for the month-year
* @protected
*/
static _ofIntIntIntZoneOffset(year, month, dayOfMonth, offset) {
const d = LocalDate.of(year, month, dayOfMonth);
return new OffsetDate(d, offset);
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of `OffsetDate` from an `Instant` and zone ID.
*
* This creates an offset date with the same instant as midnight at the
* start of day of the instant specified.
* Finding the offset from UTC/Greenwich is simple as there is only one valid
* offset for each instant.
*
* @param {Instant} instant - the instant to create the time from, not null
* @param {ZoneId} zone - the time-zone, which may be an offset, not null
* @return {OffsetDate} the offset time, not null
*/
static ofInstant(instant, zone) {
requireNonNull(instant, 'instant');
requireNonNull(zone, 'zone');
const rules = zone.rules();
const offset = rules.offset(instant);
const epochSec = instant.epochSecond() + offset.totalSeconds(); // overflow caught later
const epochDay = MathUtil.floorDiv(epochSec, SECONDS_PER_DAY);
const date = LocalDate.ofEpochDay(epochDay);
return new OffsetDate(date, offset);
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of `OffsetDate` from a temporal object.
*
* A `TemporalAccessor` represents some form of date and time information.
* This factory converts the arbitrary temporal object to an instance of `OffsetDate`.
*
* The conversion extracts and combines `LocalDate` and `ZoneOffset`.
*
* This method matches the signature of the functional interface {@link TemporalQuery}
* allowing it to be used in queries via method reference, `OffsetDate.FROM`.
*
* @param {TemporalAccessor} temporal - the temporal object to convert, not null
* @return {OffsetDate} the offset date, not null
* @throws {DateTimeException} if unable to convert to an `OffsetDate`
*/
static from(temporal) {
if (temporal instanceof OffsetDate) {
return temporal;
}
requireNonNull(temporal, 'temporal');
try {
const date = LocalDate.from(temporal);
const offset = ZoneOffset.from(temporal);
return new OffsetDate(date, offset);
} catch (ex) {
throw new DateTimeException(`Unable to obtain OffsetDate from TemporalAccessor: ${temporal.constructor.name}`, ex);
}
}
/**
* Obtains an instance of `OffsetDate` from a text string using a specific formatter.
*
* The text is parsed using the formatter, returning a date.
*
* @param {CharSequence} text - the text to parse, not null
* @param {DateTimeFormatter} formatter - the formatter to use, not null
* @return {OffsetDate} the parsed offset date, not null
* @throws {DateTimeParseException} if the text cannot be parsed
*/
static parse(text, formatter = DateTimeFormatter.ISO_OFFSET_DATE) {
requireNonNull(formatter, 'formatter');
return formatter.parse(text, OffsetDate.FROM);
}
//-----------------------------------------------------------------------
/**
* Constructor.
*
* @param {LocalDate} date - the local date, not null
* @param {ZoneOffset} offset - the zone offset, not null
* @private
*/
constructor(date, offset) {
super();
this._date = requireNonNull(date, 'date');
this._offset = requireNonNull(offset, 'offset');
}
/**
* Returns a new date based on this one, returning `this` where possible.
*
* @param {LocalDate} date - the date to create with, not null
* @param {ZoneOffset} offset - the zone offset to create with, not null
* @private
*/
_with(date, offset) {
if (this._date === date && this._offset.equals(offset)) {
return this;
}
return new OffsetDate(date, offset);
}
/**
* function overloading for {@link OffsetDate.isSupported}
* - if called with an instance of {@link TemporalField}, then {@link OffsetDate._isSupportedField} is executed,
* - if called with an instance of {@link TemporalUnit}, then {@link OffsetDate._isSupportedUnit} is executed,
* - otherwise {@link IllegalArgumentException} is thrown.
*
* @param {TemporalField|TemporalUnit} fieldOrUnit
* @return {boolean}
*/
isSupported(fieldOrUnit) {
if (fieldOrUnit instanceof TemporalField) {
return this._isSupportedField(fieldOrUnit);
}
if (fieldOrUnit instanceof TemporalUnit) {
return this._isSupportedUnit(fieldOrUnit);
}
if (fieldOrUnit == null) {
return false;
}
throw new IllegalArgumentException(`fieldOrUnit must be an instance of TemporalField or TemporalUnit, but is ${fieldOrUnit.constructor.name}`);
}
//-----------------------------------------------------------------------
/**
* Checks if the specified field is supported.
*
* This checks if this date can be queried for the specified field.
* If false, then calling the {@link OffsetDate.range},
* {@link OffsetDate.get} and {@link OffsetDate.with}
* methods will throw an exception.
*
* If the field is a {@link ChronoField} then the query is implemented here.
* The supported fields are:
*
* - `DAY_OF_WEEK`
* - `ALIGNED_DAY_OF_WEEK_IN_MONTH`
* - `ALIGNED_DAY_OF_WEEK_IN_YEAR`
* - `DAY_OF_MONTH`
* - `DAY_OF_YEAR`
* - `EPOCH_DAY`
* - `ALIGNED_WEEK_OF_MONTH`
* - `ALIGNED_WEEK_OF_YEAR`
* - `MONTH_OF_YEAR`
* - `PROLEPTIC_MONTH`
* - `YEAR_OF_ERA`
* - `YEAR`
* - `ERA`
* - `OFFSET_SECONDS`
*
* All other `ChronoField` instances will return false.
*
* If the field is not a `ChronoField`, then the result of this method
* is obtained by invoking `TemporalField.isSupportedBy(TemporalAccessor)`
* passing `this` as the argument.
* Whether the field is supported is determined by the field.
*
* @param {TemporalField} field - the field to check, null returns false
* @return {boolean} true if the field is supported on this date, false if not
* @protected
*/
_isSupportedField(field) {
if (field instanceof ChronoField) {
return field.isDateBased() || field === ChronoField.OFFSET_SECONDS;
}
return field != null && field.isSupportedBy(this);
}
/**
* Checks if the specified unit is supported.
*
* This checks if the specified unit can be added to, or subtracted from, this date.
* If false, then calling the {@link OffsetDate.plus(long, TemporalUnit)} and
* {@link OffsetDate.minus(long, TemporalUnit) minus} methods will throw an exception.
*
* If the unit is a {@link ChronoUnit} then the query is implemented here.
* The supported units are:
* <ul>
* - `DAYS`
* - `WEEKS`
* - `MONTHS`
* - `YEARS`
* - `DECADES`
* - `CENTURIES`
* - `MILLENNIA`
* - `ERAS`
* </ul>
* All other `ChronoUnit` instances will return false.
*
* If the unit is not a `ChronoUnit`, then the result of this method
* is obtained by invoking `TemporalUnit.isSupportedBy(Temporal)`
* passing `this` as the argument.
* Whether the unit is supported is determined by the unit.
*
* @param {TemporalUnit} unit - the unit to check, null returns false
* @return {boolean} true if the unit can be added/subtracted, false if not
* @protected
*/
_isSupportedUnit(unit) {
if (unit instanceof ChronoUnit) {
return unit.isDateBased();
}
return unit != null && unit.isSupportedBy(this);
}
//-----------------------------------------------------------------------
/**
* Gets the range of valid values for the specified field.
*
* The range object expresses the minimum and maximum valid values for a field.
* This date is used to enhance the accuracy of the returned range.
* If it is not possible to return the range, because the field is not supported
* or for some other reason, an exception is thrown.
*
* If the field is a {@link ChronoField} then the query is implemented here.
* The {@link OffsetDate.isSupported} supported fields will return
* appropriate range instances.
* All other `ChronoField` instances will throw an `UnsupportedTemporalTypeException`.
*
* If the field is not a `ChronoField`, then the result of this method
* is obtained by invoking `TemporalField.rangeRefinedBy(TemporalAccessor)`
* passing `this` as the argument.
* Whether the range can be obtained is determined by the field.
*
* @param {TemporalField} field - the field to query the range for, not null
* @return {ValueRange} the range of valid values for the field, not null
* @throws {DateTimeException} if the range for the field cannot be obtained
* @throws {UnsupportedTemporalTypeException} if the field is not supported
*/
range(field) {
requireNonNull(field, 'field');
requireInstance(field, TemporalField, 'field');
if (field instanceof ChronoField) {
if (field === ChronoField.OFFSET_SECONDS) {
return field.range();
}
return this._date.range(field);
}
return field.rangeRefinedBy(this);
}
/**
* Gets the value of the specified field from this date as an `int`.
*
* This queries this date for the value for the specified field.
* The returned value will always be within the valid range of values for the field.
* If it is not possible to return the value, because the field is not supported
* or for some other reason, an exception is thrown.
*
* If the field is a {@link ChronoField} then the query is implemented here.
* The {@link OffsetDate.isSupported} supported fields will return valid
* values based on this date, except `EPOCH_DAY` and `PROLEPTIC_MONTH`
* which are too large to fit in an `int` and throw a `DateTimeException`.
* All other `ChronoField` instances will throw a `DateTimeException`.
*
* If the field is not a `ChronoField`, then the result of this method
* is obtained by invoking `TemporalField.getFrom(TemporalAccessor)`
* passing `this` as the argument. Whether the value can be obtained,
* and what the value represents, is determined by the field.
*
* @param {TemporalField} field - the field to get, not null
* @return {number} the value for the field
* @throws {DateTimeException} if a value for the field cannot be obtained or
* the value is outside the range of valid values for the field
* @throws {UnsupportedTemporalTypeException} if the field is not supported or
* the range of values exceeds an `int`
* @throws {ArithmeticException} if numeric overflow occurs
*/
get(field) {
requireNonNull(field, 'field');
requireInstance(field, TemporalField, 'field');
return this.range(field).checkValidIntValue(this.getLong(field), field);
}
/**
* Gets the value of the specified field from this date as a `long`.
*
* This queries this date for the value for the specified field.
* If it is not possible to return the value, because the field is not supported
* or for some other reason, an exception is thrown.
*
* If the field is a {@link ChronoField} then the query is implemented here.
* The {@link OffsetDate.isSupported} supported fields will return valid
* values based on this date.
* All other `ChronoField` instances will throw an `UnsupportedTemporalTypeException`.
*
* If the field is not a `ChronoField`, then the result of this method
* is obtained by invoking `TemporalField.getFrom(TemporalAccessor)`
* passing `this` as the argument. Whether the value can be obtained,
* and what the value represents, is determined by the field.
*
* @param {TemporalField} field - the field to get, not null
* @return {number} the value for the field
* @throws {DateTimeException} if a value for the field cannot be obtained
* @throws {UnsupportedTemporalTypeException} if the field is not supported
* @throws {ArithmeticException} if numeric overflow occurs
*/
getLong(field) {
requireNonNull(field, 'field');
requireInstance(field, TemporalField, 'field');
if (field instanceof ChronoField) {
if (field === ChronoField.OFFSET_SECONDS) {
return this.offset().totalSeconds();
}
return this._date.getLong(field);
}
return field.getFrom(this);
}
//-----------------------------------------------------------------------
/**
* Gets the zone offset, such as '+01:00'.
*
* This is the offset of the local date from UTC/Greenwich.
*
* @return {ZoneOffset} the zone offset, not null
*/
offset() {
return this._offset;
}
/**
* Returns a copy of this `OffsetDate` with the specified offset ensuring
* that the result has the same local date.
*
* This method returns an object with the same `LocalDate` and the specified `ZoneOffset`.
* No calculation is needed or performed.
* For example, if this time represents `2007-12-03+02:00` and the offset specified is
* `+03:00`, then this method will return `2007-12-03+03:00`.
*
* This instance is immutable and unaffected by this method call.
*
* @param {ZoneOffset} offset - the zone offset to change to, not null
* @return {OffsetDate} an `OffsetDate` based on this date with the requested offset, not null
*/
withOffsetSameLocal(offset) {
requireNonNull(offset, 'offset');
return this._with(this._date, offset);
}
//-----------------------------------------------------------------------
/**
* Gets the `LocalDate` part of this date.
*
* This returns a `LocalDate` with the same year, month and day
* as this date.
*
* @return {LocalDate} the date part of this date, not null
*/
toLocalDate() {
return this._date;
}
//-----------------------------------------------------------------------
/**
* Gets the year field.
*
* This method returns the primitive `int` value for the year.
*
* The year returned by this method is proleptic as per `get(YEAR)`.
* To obtain the year-of-era, use `get(YEAR_OF_ERA)`.
*
* @return {number} the year, from MIN_YEAR to MAX_YEAR
*/
year() {
return this._date.year();
}
/**
* Gets the month-of-year field from 1 to 12.
*
* This method returns the month as an `int` from 1 to 12.
* Application code is frequently clearer if the enum {@link Month}
* is used by calling {@link OffsetDate.month}.
*
* @return {number} the month-of-year, from 1 to 12
* @see OffsetDate.month()
*/
monthValue() {
return this._date.monthValue();
}
/**
* Gets the month-of-year field using the `Month` enum.
*
* This method returns the enum {@link Month} for the month.
* This avoids confusion as to what `int` values mean.
* If you need access to the primitive `int` value then the enum
* provides the {@link Month.value} int value.
*
* @return {Month} the month-of-year, not null
* @see OffsetDate.monthValue()
*/
month() {
return this._date.month();
}
/**
* Gets the day-of-month field.
*
* This method returns the primitive `int` value for the day-of-month.
*
* @return {number} the day-of-month, from 1 to 31
*/
dayOfMonth() {
return this._date.dayOfMonth();
}
/**
* Gets the day-of-year field.
*
* This method returns the primitive `int` value for the day-of-year.
*
* @return {number} the day-of-year, from 1 to 365, or 366 in a leap year
*/
dayOfYear() {
return this._date.dayOfYear();
}
/**
* Gets the day-of-week field, which is an enum `DayOfWeek`.
*
* This method returns the enum {@link DayOfWeek} for the day-of-week.
* This avoids confusion as to what `int` values mean.
* If you need access to the primitive `int` value then the enum
* provides the {@link DayOfWeek.value} int value.
*
* Additional information can be obtained from the `DayOfWeek`.
* This includes textual names of the values.
*
* @return {DayOfWeek} the day-of-week, not null
*/
dayOfWeek() {
return this._date.dayOfWeek();
}
//-----------------------------------------------------------------------
/**
* Returns an adjusted copy of this date.
*
* This returns an `OffsetDate` based on this one, with the date adjusted.
* The adjustment takes place using the specified adjuster strategy object.
* Read the documentation of the adjuster to understand what adjustment will be made.
*
* A simple adjuster might simply set the one of the fields, such as the year field.
* A more complex adjuster might set the date to the last day of the month.
* A selection of common adjustments is provided in {@link TemporalAdjusters}.
* These include finding the 'last day of the month' and 'next Wednesday'.
* Key date-time classes also implement the `TemporalAdjuster` interface,
* such as {@link Month} and {@link MonthDay}.
* The adjuster is responsible for handling special cases, such as the varying
* lengths of month and leap years.
*
* For example this code returns a date on the last day of July:
* <pre>
* import static java.time.Month.*;
* import static java.time.temporal.TemporalAdjusters.*;
*
* result = offsetDate.with(JULY).with(lastDayOfMonth());
* </pre>
*
* The classes {@link LocalDate} and {@link ZoneOffset} implement `TemporalAdjuster`,
* thus this method can be used to change the date or offset:
* <pre>
* result = offsetDate.with(date);
* result = offsetDate.with(offset);
* </pre>
*
* The result of this method is obtained by invoking the
* {@link TemporalAdjuster.adjustInto} method on the
* specified adjuster passing `this` as the argument.
*
* This instance is immutable and unaffected by this method call.
*
* @param {TemporalAdjuster} adjuster - the adjuster to use, not null
* @return {OffsetDate} an `OffsetDate` based on `this` with the adjustment made, not null
* @throws {DateTimeException} if the adjustment cannot be made
* @throws {ArithmeticException} if numeric overflow occurs
*/
_withAdjuster(adjuster) {
// optimizations
if (adjuster instanceof LocalDate) {
return this._with(adjuster, this._offset);
} else if (adjuster instanceof ZoneOffset) {
return this._with(this._date, adjuster);
} else if (adjuster instanceof OffsetDate) {
return adjuster;
}
return super._withAdjuster(adjuster);
}
/**
* Returns a copy of this date with the specified field set to a new value.
*
* This returns an `OffsetDate` based on this one, with the value
* for the specified field changed.
* This can be used to change any supported field, such as the year, month or day-of-month.
* If it is not possible to set the value, because the field is not supported or for
* some other reason, an exception is thrown.
*
* In some cases, changing the specified field can cause the resulting date to become invalid,
* such as changing the month from 31st January to February would make the day-of-month invalid.
* In cases like this, the field is responsible for resolving the date. Typically it will choose
* the previous valid date, which would be the last valid day of February in this example.
*
* If the field is a {@link ChronoField} then the adjustment is implemented here.
*
* The `OFFSET_SECONDS` field will return a date with the specified offset.
* The local date is unaltered. If the new offset value is outside the valid range
* then a `DateTimeException` will be thrown.
*
* The other {@link OffsetDate.isSupported} supported fields will behave as per
* the matching method on {@link LocalDate.with} LocalDate.
* In this case, the offset is not part of the calculation and will be unchanged.
*
* All other `ChronoField` instances will throw an `UnsupportedTemporalTypeException`.
*
* If the field is not a `ChronoField`, then the result of this method
* is obtained by invoking `TemporalField.adjustInto(Temporal, long)`
* passing `this` as the argument. In this case, the field determines
* whether and how to adjust the instant.
*
* This instance is immutable and unaffected by this method call.
*
* @param {TemporalField} field - the field to set in the result, not null
* @param {number} newValue - the new value of the field in the result
* @return {OffsetDate} an `OffsetDate` based on `this` with the specified field set, not null
* @throws {DateTimeException} if the field cannot be set
* @throws {UnsupportedTemporalTypeException} if the field is not supported
* @throws {ArithmeticException} if numeric overflow occurs
*/
_withField(field, newValue) {
requireNonNull(field, 'field');
requireInstance(field, TemporalField, 'field');
if (field instanceof ChronoField) {
if (field === ChronoField.OFFSET_SECONDS) {
const f = field;
return this._with(this._date, ZoneOffset.ofTotalSeconds(f.checkValidIntValue(newValue)));
}
return this._with(this._date.with(field, newValue), this._offset);
}
return field.adjustInto(this, newValue);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this `OffsetDate` with the year altered.
*
* The offset does not affect the calculation and will be the same in the result.
* If the day-of-month is invalid for the year, it will be changed to the last valid day of the month.
*
* This instance is immutable and unaffected by this method call.
*
* @param {OffsetDate} year - the year to set in the result, from MIN_YEAR to MAX_YEAR
* @return {number} an `OffsetDate` based on this date with the requested year, not null
* @throws {DateTimeException} if the year value is invalid
*/
withYear(year) {
return this._with(this._date.withYear(year), this._offset);
}
/**
* Returns a copy of this `OffsetDate` with the month-of-year altered.
*
* The offset does not affect the calculation and will be the same in the result.
* If the day-of-month is invalid for the year, it will be changed to the last valid day of the month.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} month - the month-of-year to set in the result, from 1 (January) to 12 (December)
* @return {OffsetDate} an `OffsetDate` based on this date with the requested month, not null
* @throws {DateTimeException} if the month-of-year value is invalid
*/
withMonth(month) {
return this._with(this._date.withMonth(month), this._offset);
}
/**
* Returns a copy of this `OffsetDate` with the day-of-month altered.
*
* If the resulting date is invalid, an exception is thrown.
* The offset does not affect the calculation and will be the same in the result.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} dayOfMonth - the day-of-month to set in the result, from 1 to 28-31
* @return {OffsetDate} an `OffsetDate` based on this date with the requested day, not null
* @throws {DateTimeException} if the day-of-month value is invalid,
* or if the day-of-month is invalid for the month-year
*/
withDayOfMonth(dayOfMonth) {
return this._with(this._date.withDayOfMonth(dayOfMonth), this._offset);
}
/**
* Returns a copy of this `OffsetDate` with the day-of-year altered.
*
* If the resulting date is invalid, an exception is thrown.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} dayOfYear - the day-of-year to set in the result, from 1 to 365-366
* @return {OffsetDate} an `OffsetDate` based on this date with the requested day, not null
* @throws {DateTimeException} if the day-of-year value is invalid,
* or if the day-of-year is invalid for the year
*/
withDayOfYear(dayOfYear) {
return this._with(this._date.withDayOfYear(dayOfYear), this._offset);
}
/**
* Returns a copy of this date with the specified amount added.
*
* This returns an `OffsetDate` based on this one, with the amount
* in terms of the unit added. If it is not possible to add the amount, because the
* unit is not supported or for some other reason, an exception is thrown.
*
* If the field is a {@link ChronoUnit} then the addition is implemented by
* {@link LocalDate.plus}.
* The offset is not part of the calculation and will be unchanged in the result.
*
* If the field is not a `ChronoUnit`, then the result of this method
* is obtained by invoking `TemporalUnit.addTo(Temporal, long)`
* passing `this` as the argument. In this case, the unit determines
* whether and how to perform the addition.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} amountToAdd - the amount of the unit to add to the result, may be negative
* @param {TemporalUnit} unit - the unit of the amount to add, not null
* @return {OffsetDate} an `OffsetDate` based on this date with the specified amount added, not null
* @throws {DateTimeException} if the addition cannot be made
* @throws {UnsupportedTemporalTypeException} if the unit is not supported
* @throws {ArithmeticException} if numeric overflow occurs
*/
_plusUnit(amountToAdd, unit) {
if (unit instanceof ChronoUnit) {
return this._with(this._date.plus(amountToAdd, unit), this._offset);
}
return unit.addTo(this, amountToAdd);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this `OffsetDate` with the specified number of years added.
*
* This uses {@link LocalDate.plusYears} to add the years.
* The offset does not affect the calculation and will be the same in the result.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} years - the years to add, may be negative
* @return {OffsetDate} an `OffsetDate` based on this date with the years added, not null
* @throws {DateTimeException} if the result exceeds the supported date range
*/
plusYears(years) {
return this._with(this._date.plusYears(years), this._offset);
}
/**
* Returns a copy of this `OffsetDate` with the specified number of months added.
*
* This uses {@link LocalDate.plusMonths} to add the months.
* The offset does not affect the calculation and will be the same in the result.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} months - the months to add, may be negative
* @return {OffsetDate} an `OffsetDate` based on this date with the months added, not null
* @throws {DateTimeException} if the result exceeds the supported date range
*/
plusMonths(months) {
return this._with(this._date.plusMonths(months), this._offset);
}
/**
* Returns a copy of this `OffsetDate` with the specified number of weeks added.
*
* This uses {@link LocalDate.plusWeeks} to add the weeks.
* The offset does not affect the calculation and will be the same in the result.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} weeks - the weeks to add, may be negative
* @return {OffsetDate} an `OffsetDate` based on this date with the weeks added, not null
* @throws {DateTimeException} if the result exceeds the supported date range
*/
plusWeeks(weeks) {
return this._with(this._date.plusWeeks(weeks), this._offset);
}
/**
* Returns a copy of this `OffsetDate` with the specified number of days added.
*
* This uses {@link LocalDate.plusDays)} to add the days.
* The offset does not affect the calculation and will be the same in the result.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} days - the days to add, may be negative
* @return {OffsetDate} an `OffsetDate` based on this date with the days added, not null
* @throws {DateTimeException} if the result exceeds the supported date range
*/
plusDays(days) {
return this._with(this._date.plusDays(days), this._offset);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this `OffsetDate` with the specified number of years subtracted.
*
* This uses {@link LocalDate.minusYears} to subtract the years.
* The offset does not affect the calculation and will be the same in the result.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} years - the years to subtract, may be negative
* @return {OffsetDate} an `OffsetDate` based on this date with the years subtracted, not null
* @throws {DateTimeException} if the result exceeds the supported date range
*/
minusYears(years) {
return this._with(this._date.minusYears(years), this._offset);
}
/**
* Returns a copy of this `OffsetDate` with the specified number of months subtracted.
*
* This uses {@link LocalDate.minusMonths} to subtract the months.
* The offset does not affect the calculation and will be the same in the result.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} months - the months to subtract, may be negative
* @return {OffsetDate} an `OffsetDate` based on this date with the months subtracted, not null
* @throws {DateTimeException} if the result exceeds the supported date range
*/
minusMonths(months) {
return this._with(this._date.minusMonths(months), this._offset);
}
/**
* Returns a copy of this `OffsetDate` with the specified number of weeks subtracted.
*
* This uses {@link LocalDate.minusWeeks} to subtract the weeks.
* The offset does not affect the calculation and will be the same in the result.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} weeks - the weeks to subtract, may be negative
* @return {OffsetDate} an `OffsetDate` based on this date with the weeks subtracted, not null
* @throws {DateTimeException} if the result exceeds the supported date range
*/
minusWeeks(weeks) {
return this._with(this._date.minusWeeks(weeks), this._offset);
}
/**
* Returns a copy of this `OffsetDate` with the specified number of days subtracted.
*
* This uses {@link LocalDate.minusDays} to subtract the days.
* The offset does not affect the calculation and will be the same in the result.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} days - the days to subtract, may be negative
* @return {OffsetDate} an `OffsetDate` based on this date with the days subtracted, not null
* @throws {DateTimeException} if the result exceeds the supported date range
*/
minusDays(days) {
return this._with(this._date.minusDays(days), this._offset);
}
//-----------------------------------------------------------------------
/**
* Queries this date using the specified query.
*
* This queries this date using the specified query strategy object.
* The `TemporalQuery` object defines the logic to be used to
* obtain the result. Read the documentation of the query to understand
* what the result of this method will be.
*
* The result of this method is obtained by invoking the
* {@link TemporalQuery.queryFrom} method on the
* specified query passing `this` as the argument.
*
* @param {TemporalQuery} query - the query to invoke, not null
* @return {*} the query result, null may be returned (defined by the query)
* @throws {DateTimeException} if unable to query (defined by the query)
* @throws {ArithmeticException} if numeric overflow occurs (defined by the query)
*/
query(query) {
requireNonNull(query, 'query');
requireInstance(query, TemporalQuery, 'query');
if (query === TemporalQueries.chronology()) {
return IsoChronology.INSTANCE;
} else if (query === TemporalQueries.precision()) {
return ChronoUnit.DAYS;
} else if (query === TemporalQueries.offset() || query === TemporalQueries.zone()) {
return this.offset();
}
return super.query(query);
}
/**
* Adjusts the specified temporal object to have the same offset and date
* as this object.
*
* This returns a temporal object of the same observable type as the input
* with the offset and date changed to be the same as this.
*
* The adjustment is equivalent to using {@link Temporal.with}
* twice, passing {@link ChronoField.OFFSET_SECONDS} and
* {@link ChronoField.EPOCH_DAY} as the fields.
*
* In most cases, it is clearer to reverse the calling pattern by using
* {@link Temporal.with(TemporalAdjuster)}:
* <pre>
* // these two lines are equivalent, but the second approach is recommended
* temporal = thisOffsetDate.adjustInto(temporal);
* temporal = temporal.with(thisOffsetDate);
* </pre>
*
* This instance is immutable and unaffected by this method call.
*
* @param {Temporal} temporal - the target object to be adjusted, not null
* @return {Temporal} the adjusted object, not null
* @throws {DateTimeException} if unable to make the adjustment
* @throws {ArithmeticException} if numeric overflow occurs
*/
adjustInto(temporal) {
return temporal
.with(ChronoField.OFFSET_SECONDS, this.offset().totalSeconds())
.with(ChronoField.EPOCH_DAY, this.toLocalDate().toEpochDay());
}
/**
* Calculates the period between this date and another date in
* terms of the specified unit.
*
* This calculates the period between two dates in terms of a single unit.
* The start and end points are `this` and the specified date.
* The result will be negative if the end is before the start.
* For example, the period in days between two dates can be calculated
* using `startDate.until(endDate, DAYS)`.
*
* The `Temporal` passed to this method is converted to a
* `OffsetDate` using {@link OffsetDate.from}.
* If the offset differs between the two times, then the specified
* end time is normalized to have the same offset as this time.
*
* The calculation returns a whole number, representing the number of
* complete units between the two dates.
* For example, the period in months between 2012-06-15Z and 2012-08-14Z
* will only be one month as it is one day short of two months.
*
* There are two equivalent ways of using this method.
* The first is to invoke this method.
* The second is to use {@link TemporalUnit.between}:
* <pre>
* // these two lines are equivalent
* amount = start.until(end, DAYS);
* amount = DAYS.between(start, end);
* </pre>
* The choice should be made based on which makes the code more readable.
*
* The calculation is implemented in this method for {@link ChronoUnit}.
* The units `DAYS`, `WEEKS`, `MONTHS`, `YEARS`,
* `DECADES`, `CENTURIES`, `MILLENNIA` and `ERAS`
* are supported. Other `ChronoUnit` values will throw an exception.
*
* If the unit is not a `ChronoUnit`, then the result of this method
* is obtained by invoking `TemporalUnit.between(Temporal, Temporal)`
* passing `this` as the first argument and the converted input temporal
* as the second argument.
*
* This instance is immutable and unaffected by this method call.
*
* @param {Temporal} endExclusive - the end time, exclusive, which is converted to an `OffsetDate`, not null
* @param {TemporalUnit} unit - the unit to measure the amount in, not null
* @return {number} the amount of time between this date and the end date
* @throws {DateTimeException} if the amount cannot be calculated, or the end
* temporal cannot be converted to an `OffsetDate`
* @throws {UnsupportedTemporalTypeException} if the unit is not supported
* @throws {ArithmeticException} if numeric overflow occurs
*/
until(endExclusive, unit) {
const end = OffsetDate.from(endExclusive);
if (unit instanceof ChronoUnit) {
const offsetDiff = end._offset.totalSeconds() - this._offset.totalSeconds();
const endLocal = end._date.plusDays(MathUtil.intDiv(-offsetDiff, SECONDS_PER_DAY));
return this._date.until(endLocal, unit);
}
return unit.between(this, end);
}
/**
* Formats this date using the specified formatter.
*
* This date will be passed to the formatter to produce a string.
*
* @param {DateTimeFormatter} formatter - the formatter to use, not null
* @return {string} the formatted date string, not null
* @throws {DateTimeException} if an error occurs during printing
*/
format(formatter) {
requireNonNull(formatter, 'formatter');
return formatter.format(this);
}
//-----------------------------------------------------------------------
/**
* Returns an offset date-time formed from this date at the specified time.
*
* This combines this date with the specified time to form an `OffsetDateTime`.
* All possible combinations of date and time are valid.
*
* This instance is immutable and unaffected by this method call.
*
* @param {LocalTime} time - the time to combine with, not null
* @return {OffsetDateTime} the offset date-time formed from this date and the specified time, not null
*/
atTime(time) {
return OffsetDateTime.of(this._date, time, this._offset);
}
//-----------------------------------------------------------------------
/**
* Converts this date to midnight at the start of day in epoch seconds.
*
* @return {number} the epoch seconds value
* @private
*/
_toEpochSecond() {
const epochDay = this._date.toEpochDay();
const secs = epochDay * SECONDS_PER_DAY;
return secs - this._offset.totalSeconds();
}
/**
* Converts this `OffsetDate` to the number of seconds since the epoch
* of 1970-01-01T00:00:00Z.
*
* This combines this offset date with the specified time
* to calculate the epoch-second value, which is the
* number of elapsed seconds from 1970-01-01T00:00:00Z.
* Instants on the time-line after the epoch are positive, earlier
* are negative.
*
* @param {LocalTime} time - the local time, not null
* @return {number} the number of seconds since the epoch of 1970-01-01T00:00:00Z, may be negative
*/
toEpochSecond(time) {
requireNonNull(time, 'time');
return this._toEpochSecond() + time.toSecondOfDay();
}
//-----------------------------------------------------------------------
/**
* Compares this `OffsetDate` to another date.
*
* The comparison is based first on the UTC equivalent instant, then on the local date.
* It is 'consistent with equals', as defined by {@link Comparable}.
*
* For example, the following is the comparator order:
* 1. 2008-06-29-11:00</li>
* 2. 2008-06-29-12:00</li>
* 3. 2008-06-30+12:00</li>
* 4. 2008-06-29-13:00</li>
*
* Values #2 and #3 represent the same instant on the time-line.
* When two values represent the same instant, the local date is compared
* to distinguish them. This step is needed to make the ordering
* consistent with `equals()`.
*
* To compare the underlying local date of two `TemporalAccessor` instances,
* use {@link ChronoField.EPOCH_DAY} as a comparator.
*
* @param {OffsetDate} other - the other date to compare to, not null
* @return {number} the comparator value, negative if less, positive if greater
*/
compareTo(other) {
requireNonNull(other, 'other');
requireInstance(other, OffsetDate, 'other');
if (this._offset.equals(other._offset)) {
return this._date.compareTo(other._date);
}
let compare = this._toEpochSecond() - other._toEpochSecond();
if (compare === 0) {
compare = this._date.compareTo(other._date);
}
return compare;
}
//-----------------------------------------------------------------------
/**
* Checks if the instant of midnight at the start of this `OffsetDate`
* is after midnight at the start of the specified date.
*
* This method differs from the comparison in {@link OffsetDate.compareTo} in that it
* only compares the instant of the date. This is equivalent to using
* `date1.toEpochSecond().isAfter(date2.toEpochSecond())`.
*
* @param {OffsetDate} other - the other date to compare to, not null
* @return {boolean} true if this is after the instant of the specified date
*/
isAfter(other) {
requireNonNull(other, 'other');
requireInstance(other, OffsetDate, 'other');
return this._toEpochSecond() > other._toEpochSecond();
}
/**
* Checks if the instant of midnight at the start of this `OffsetDate`
* is before midnight at the start of the specified date.
*
* This method differs from the comparison in {@link OffsetDate.compareTo} in that it
* only compares the instant of the date. This is equivalent to using
* `date1.toEpochSecond().isBefore(date2.toEpochSecond())`.
*
* @param {OffsetDate} other - the other date to compare to, not null
* @return {boolean} true if th