@js-joda/extra
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additional date-time classes that complement those in js-joda
1,144 lines (1,090 loc) • 51 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, DateTimeFormatterBuilder, IllegalArgumentException, IsoChronology, IsoFields, LocalDate, SignStyle, Temporal, TemporalField, TemporalQueries, TemporalQuery, TemporalUnit, UnsupportedTemporalTypeException, ValueRange, Year, ZoneId } from '@js-joda/core';
import { Quarter } from './Quarter';
// 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;
/**
* A year-quarter in the ISO-8601 calendar system, such as `2007-Q2`.
*
* `YearQuarter` is an immutable date-time object that represents the combination
* of a year and quarter. Any field that can be derived from a year and quarter can be obtained.
* A quarter is defined by {@link Quarter} and {@link Month.firstMonthOfQuarter} - Q1, Q2, Q3 and Q4.
* Q1 is January to March, Q2 is April to June, Q3 is July to September and Q4 is October to December.
*
* This class does not store or represent a day, time or time-zone.
* For example, the value '2nd quarter 2007' can be stored in a `YearQuarter`.
*
* The ISO-8601 calendar system is the modern civil calendar system used today
* in most of the world. It is equivalent to the proleptic Gregorian calendar
* system, in which today's rules for leap years are applied for all time.
* For most applications written today, the ISO-8601 rules are entirely suitable.
* However, any application that makes use of historical dates, and requires them
* to be accurate will find the ISO-8601 approach unsuitable.
* Note that the ISO-8601 standard does not define or refer to quarters.
*
*/
export class YearQuarter extends Temporal {
//-----------------------------------------------------------------------
/**
* function overloading for {@link YearQuarter.now}
* - if called with 0 argument {@link YearQuarter._now0} is executed,
* - if called with 1 argument and first argument is an instance of ZoneId, then {@link YearQuarter._nowZoneId} is executed,
* - otherwise {@link YearQuarter._nowClock} is executed
*
* @param {ZoneId|Clock} [zoneIdOrClock=Clock.systemDefaultZone()]
* @return {YearQuarter}
*/
static now(zoneIdOrClock) {
if (arguments.length === 0) {
return YearQuarter._now0();
} else if (arguments.length === 1 && zoneIdOrClock instanceof ZoneId) {
return YearQuarter._nowZoneId(zoneIdOrClock);
} else {
return YearQuarter._nowClock(zoneIdOrClock);
}
}
//-----------------------------------------------------------------------
/**
* Obtains the current year-quarter 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 year-quarter.
* The zone and offset will be set based on 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 {YearQuarter} the current year-quarter using the system clock and default time-zone, not null
* @protected
*/
static _now0() {
return YearQuarter.now(Clock.systemDefaultZone());
}
/**
* Obtains the current year-quarter from the system clock in the specified time-zone.
*
* This will query the {@link Clock.system} to obtain the current year-quarter.
* Specifying the time-zone avoids dependence on the default 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 {YearQuarter} the current year-quarter using the system clock, not null
* @protected
*/
static _nowZoneId(zone) {
return YearQuarter.now(Clock.system(zone));
}
/**
* Obtains the current year-quarter from the specified clock.
*
* This will query the specified clock to obtain the current year-quarter.
* 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 {YearQuarter} the current year-quarter, not null
*/
static _nowClock(clock) {
const now = LocalDate.now(clock); // called once
return YearQuarter.of(now.year(), Quarter.from(now.month()));
}
//-----------------------------------------------------------------------
/**
* function overloading for {@link YearQuarter.of}
* - if called with {Year} and {Quarter} {@link YearQuarter._ofYearQuarter} is executed,
* - if called with {Year} and {number} {@link YearQuarter._ofYearInt} is executed,
* - if called with {number} and {Quarter} {@link YearQuarter._ofIntQuarter} is executed,
* - if called with {number} and {number} {@link YearQuarter._ofIntInt} is executed,
* otherwise throws IllegalArgumentException.
*
* @param {Year|number} year
* @param {Quarter|number} quarter
* @return {YearQuarter}
*/
static of(year, quarter) {
if (year instanceof Year && quarter instanceof Quarter) {
return YearQuarter._ofYearQuarter(year, quarter);
}
if (year instanceof Year && typeof quarter === 'number') {
return YearQuarter._ofYearInt(year, quarter);
}
if (typeof year === 'number' && quarter instanceof Quarter) {
return YearQuarter._ofIntQuarter(year, quarter);
}
if (typeof year === 'number' && typeof quarter === 'number') {
return YearQuarter._ofIntInt(year, quarter);
}
// FIXME
const yearMessage = `year must be an instance of Year or number but is ${year.constructor.name}`;
const quarterMessage = `quarter must be an instance of Quarter or number but is ${quarter.constructor.name}`;
throw new IllegalArgumentException(`${yearMessage} and ${quarterMessage}`);
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of `YearQuarter` from a year and quarter.
*
* @param {Year} year - the year to represent, not null
* @param {Quarter} quarter - the quarter-of-year to represent, not null
* @return {YearQuarter} the year-quarter, not null
* @protected
*/
// FIXME ambiguous name?
static _ofYearQuarter(year, quarter) {
return YearQuarter.of(year.value(), quarter);
}
/**
* Obtains an instance of `YearQuarter` from a year and quarter.
*
* @param {Year} year - the year to represent, not null
* @param {number} quarter - the quarter-of-year to represent, from 1 to 4
* @return {YearQuarter} the year-quarter, not null
* @throws {DateTimeException} if the quarter value is invalid
* @protected
*/
static _ofYearInt(year, quarter) {
return YearQuarter.of(year.value(), Quarter.of(quarter));
}
/**
* Obtains an instance of `YearQuarter` from a year and quarter.
*
* @param {number} year - the year to represent, from MIN_YEAR to MAX_YEAR
* @param {Quarter} quarter - the quarter-of-year to represent, not null
* @return {YearQuarter} the year-quarter, not null
* @throws {DateTimeException} if the year value is invalid
* @protected
*/
static _ofIntQuarter(year, quarter) {
ChronoField.YEAR.checkValidValue(year);
requireNonNull(quarter, 'quarter');
return new YearQuarter(year, quarter);
}
/**
* Obtains an instance of `YearQuarter` from a year and quarter.
*
* @param {number} year - the year to represent, from MIN_YEAR to MAX_YEAR
* @param {number} quarter - the quarter-of-year to represent, from 1 to 4
* @return {YearQuarter} the year-quarter, not null
* @throws {DateTimeException} if either field value is invalid
* @protected
*/
static _ofIntInt(year, quarter) {
ChronoField.YEAR.checkValidValue(year);
return new YearQuarter(year, Quarter.of(quarter));
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of `YearQuarter` from a temporal object.
*
* This obtains a year-quarter based on the specified temporal.
* A `TemporalAccessor` represents an arbitrary set of date and time information,
* which this factory converts to an instance of `YearQuarter`.
*
* The conversion extracts the {@link ChronoField.YEAR} and
* {@link IsoFields.QUARTER_OF_YEAR} fields.
* The extraction is only permitted if the temporal object has an ISO
* chronology, or can be converted to a `LocalDate`.
*
* This method matches the signature of the functional interface {@link TemporalQuery}
* allowing it to be used in queries via method reference, `YearQuarter.FROM`.
*
* @param {TemporalAccessor} temporal - the temporal object to convert, not null
* @return {YearQuarter} the year-quarter, not null
* @throws {DateTimeException} if unable to convert to a `YearQuarter`
*/
static from(temporal) {
if (temporal instanceof YearQuarter) {
return temporal;
}
requireNonNull(temporal, 'temporal');
try {
/* TODO: only IsoChronology for now
if (IsoChronology.INSTANCE.equals(Chronology.from(temporal)) == false) {
temporal = LocalDate.from(temporal);
}
*/
// need to use getLong() as JDK Parsed class get() doesn't work properly
const year = MathUtil.safeToInt(temporal.getLong(ChronoField.YEAR));
const qoy = MathUtil.safeToInt(temporal.getLong(IsoFields.QUARTER_OF_YEAR));
return YearQuarter.of(year, qoy);
} catch (ex) {
throw new DateTimeException(`Unable to obtain YearQuarter from TemporalAccessor: ${temporal} of type ${temporal.constructor.name}`, ex);
}
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of `YearQuarter` from a text string using a specific formatter.
*
* The text is parsed using the formatter, returning a year-quarter.
*
* @param {string} text - the text to parse, not null
* @param {DateTimeFormatter} [formatter=YearQuarter.PARSER] - the formatter to use, default is {@link YearQuarter.PARSER}
* @return {YearQuarter} the parsed year-quarter, not null
* @throws {DateTimeParseException} if the text cannot be parsed
*/
static parse(text, formatter = YearQuarter.PARSER) {
requireNonNull(formatter, 'formatter');
requireInstance(formatter, DateTimeFormatter, 'formatter');
return formatter.parse(text, YearQuarter.FROM);
}
//-----------------------------------------------------------------------
/**
* Constructor.
*
* @param {number} year - the year to represent, validated from MIN_YEAR to MAX_YEAR
* @param {Quarter} quarter - the quarter-of-year to represent, validated not null
* @private
*/
constructor(year, quarter) {
super();
this._year = MathUtil.safeToInt(year);
this._quarter = requireInstance(quarter, Quarter, 'Quarter');
}
/**
* Returns a copy of this year-quarter with the new year and quarter, checking
* to see if a new object is in fact required.
*
* @param {number} newYear - the year to represent, validated from MIN_YEAR to MAX_YEAR
* @param {Quarter} newQuarter - the quarter-of-year to represent, validated not null
* @return {YearQuarter} the year-quarter, not null
* @private
*/
_with(newYear, newQuarter) {
if (this._year === newYear && this._quarter === newQuarter) {
return this;
}
return new YearQuarter(newYear, newQuarter);
}
/**
* function overloading for {@link YearWeek.isSupported}
* - if called with an instance of {@link TemporalField}, then {@link YearWeek.isSupportedField} is executed,
* - if called with an instance of {@link TemporalUnit}, then {@link YearWeek.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 year-quarter can be queried for the specified field.
* If false, then calling the {@link YearQuarter.range},
* {@link YearQuarter.get} and {@link YearQuarter.with}
* methods will throw an exception.
*
* If the field is a {@link ChronoField} then the query is implemented here.
* The supported fields are:
*
* - `QUARTER_OF_YEAR`
* - `YEAR_OF_ERA`
* - `YEAR`
* - `ERA`
*
* 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 year-quarter, false if not
* @protected
*/
_isSupportedField(field) {
if (field === IsoFields.QUARTER_OF_YEAR) {
return true;
} else if (field instanceof ChronoField) {
return field === ChronoField.YEAR || field === ChronoField.YEAR_OF_ERA || field === ChronoField.ERA;
}
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 year-quarter.
* If false, then calling the {@link YearQuarter.plus} and
* {@link YearQuarter.minus} methods will throw an exception.
*
* If the unit is a {@link ChronoUnit} then the query is implemented here.
* The supported units are:
*
* - `QUARTER_YEARS`
* - `YEARS`
* - `DECADES`
* - `CENTURIES`
* - `MILLENNIA`
* - `ERAS`
*
* 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 === IsoFields.QUARTER_YEARS) {
return true;
} else if (unit instanceof ChronoUnit) {
return unit === ChronoUnit.YEARS || unit === ChronoUnit.DECADES || unit === ChronoUnit.CENTURIES || unit === ChronoUnit.MILLENNIA || unit === ChronoUnit.ERAS;
}
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 year-quarter 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 YearQuarter.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 === IsoFields.QUARTER_OF_YEAR) {
return IsoFields.QUARTER_OF_YEAR.range();
}
if (field === ChronoField.YEAR_OF_ERA) {
return (this.year() <= 0 ? ValueRange.of(1, Year.MAX_VALUE + 1) : ValueRange.of(1, Year.MAX_VALUE));
}
return super.range(field);
}
/**
* Gets the value of the specified field from this year-quarter as an `int`.
*
* This queries this year-quarter 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 YearQuarter.isSupported} supported fields will return valid
* values based on this year-quarter,.
* 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 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 year-quarter as a `long`.
*
* This queries this year-quarter 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 YearQuarter.isSupported} supported fields will return valid
* values based on this year-quarter.
* 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 === IsoFields.QUARTER_OF_YEAR) {
return this._quarter.value();
} else if (field instanceof ChronoField) {
switch (field) {
case ChronoField.YEAR_OF_ERA:
return (this._year < 1 ? 1 - this._year : this._year);
case ChronoField.YEAR:
return this._year;
case ChronoField.ERA:
return (this._year < 1 ? 0 : 1);
default:
throw new UnsupportedTemporalTypeException(`Unsupported field: ${field}`);
}
}
return super.get(field);
}
/**
* @private
*/
_prolepticQuarter() {
return this._year * 4 + (this._quarter.value() - 1);
}
//-----------------------------------------------------------------------
/**
* 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)`.
*
* @return {number} the year, from MIN_YEAR to MAX_YEAR
*/
year() {
return this._year;
}
/**
* Gets the quarter-of-year field from 1 to 4.
*
* This method returns the quarter as an `int` from 1 to 4.
* Application code is frequently clearer if the enum {@link Quarter}
* is used by calling {@link YearQuarter.getQuarter}.
*
* @return {number} the quarter-of-year, from 1 to 4
* @see {@link YearQuarter.quarter}
*/
quarterValue() {
return this._quarter.value();
}
/**
* Gets the quarter-of-year field using the `Quarter` enum.
*
* This method returns the enum {@link Quarter} for the quarter.
* This avoids confusion as to what `int` values mean.
* If you need access to the primitive `int` value then the enum
* provides the {@link Quarter.value}.
*
* @return {Quarter} the quarter-of-year, not null
* @see {@link YearQuarter.quarterValue}
*/
quarter() {
return this._quarter;
}
//-----------------------------------------------------------------------
/**
* Checks if the year is a leap year, according to the ISO proleptic
* calendar system rules.
*
* This method applies the current rules for leap years across the whole time-line.
* In general, a year is a leap year if it is divisible by four without
* remainder. However, years divisible by 100, are not leap years, with
* the exception of years divisible by 400 which are.
*
* For example, 1904 is a leap year it is divisible by 4.
* 1900 was not a leap year as it is divisible by 100, however 2000 was a
* leap year as it is divisible by 400.
*
* The calculation is proleptic - applying the same rules into the far future and far past.
* This is historically inaccurate, but is correct for the ISO-8601 standard.
*
* @return {boolean} true if the year is leap, false otherwise
*/
isLeapYear() {
return IsoChronology.isLeapYear(this._year);
}
/**
* Checks if the day-of-quarter is valid for this year-quarter.
*
* This method checks whether this year and quarter and the input day form
* a valid date.
*
* @param {number} dayOfQuarter - the day-of-quarter to validate, from 1 to 92, invalid value returns false
* @return {boolean} true if the day is valid for this year-quarter
*/
isValidDay(dayOfQuarter) {
return dayOfQuarter >= 1 && dayOfQuarter <= this.lengthOfQuarter();
}
/**
* Returns the length of the quarter, taking account of the year.
*
* This returns the length of the quarter in days.
*
* @return {number} the length of the quarter in days, from 90 to 92
*/
lengthOfQuarter() {
return this._quarter.length(this.isLeapYear());
}
/**
* Returns the length of the year.
*
* This returns the length of the year in days, either 365 or 366.
*
* @return {number} 366 if the year is leap, 365 otherwise
*/
lengthOfYear() {
return (this.isLeapYear() ? 366 : 365);
}
//-----------------------------------------------------------------------
/**
* Returns an adjusted copy of this year-quarter.
*
* This returns a {@code YearQuarter} based on this one, with the year-quarter 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 year-quarter to the next quarter that
* Halley's comet will pass the Earth.
*
* The result of this method is obtained by invoking the
* {@link TemporalAdjuster#adjustInto(Temporal)} method on the
* specified adjuster passing {@code this} as the argument.
*
* This instance is immutable and unaffected by this method call.
*
* @param {TemporalAdjuster} adjuster - the adjuster to use, not null
* @return {YearQuarter} based on {@code 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 YearQuarter) {
return adjuster;
}
return super._withAdjuster(adjuster);
}
/**
* Returns a copy of this year-quarter with the specified field set to a new value.
*
* This returns a `YearQuarter` 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 or quarter.
* If it is not possible to set 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 adjustment is implemented here.
* The supported fields behave as follows:
* - `QUARTER_OF_YEAR` -
* Returns a `YearQuarter` with the specified quarter-of-year.
* The year will be unchanged.
* - `YEAR_OF_ERA` -
* Returns a `YearQuarter` with the specified year-of-era
* The quarter and era will be unchanged.
* - `YEAR` -
* Returns a `YearQuarter` with the specified year.
* The quarter will be unchanged.
* - `ERA` -
* Returns a `YearQuarter` with the specified era.
* The quarter and year-of-era will be unchanged.
*
* In all cases, if the new value is outside the valid range of values for the field
* then a `DateTimeException` will be thrown.
*
* 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 {YearQuarter} a `YearQuarter` 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 === IsoFields.QUARTER_OF_YEAR) {
return this.withQuarter(IsoFields.QUARTER_OF_YEAR.range().checkValidIntValue(newValue, IsoFields.QUARTER_OF_YEAR));
} else if (field instanceof ChronoField) {
field.checkValidValue(newValue);
switch (field) {
case ChronoField.YEAR_OF_ERA:
return this.withYear(this._year < 1 ? 1 - newValue : newValue);
case ChronoField.YEAR:
return this.withYear(newValue);
case ChronoField.ERA:
return this.getLong(ChronoField.ERA) === newValue ? this : this.withYear(1 - this._year);
default:
throw new UnsupportedTemporalTypeException(`Unsupported field: ${field}`);
}
}
return field.adjustInto(this, newValue);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this `YearQuarter` with the year altered.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} year - the year to set in the returned year-quarter, from MIN_YEAR to MAX_YEAR
* @return {YearQuarter} a `YearQuarter` based on this year-quarter with the requested year, not null
* @throws {DateTimeException} if the year value is invalid
*/
withYear(year) {
ChronoField.YEAR.checkValidValue(year);
return this._with(year, this._quarter);
}
/**
* Returns a copy of this `YearQuarter` with the quarter-of-year altered.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} quarter - the quarter-of-year to set in the returned year-quarter, from 1 to 4
* @return {YearQuarter} a `YearQuarter` based on this year-quarter with the requested quarter, not null
* @throws {DateTimeException} if the quarter-of-year value is invalid
*/
withQuarter(quarter) {
IsoFields.QUARTER_OF_YEAR.range().checkValidValue(quarter, IsoFields.QUARTER_OF_YEAR);
return this._with(this._year, Quarter.of(quarter));
}
/**
* Returns a copy of this year-quarter with the specified amount added.
*
* This returns a `YearQuarter` 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 here.
* The supported fields behave as follows:
*
* - `QUARTER_YEARS` -
* Returns a `YearQuarter` with the specified number of quarters added.
* This is equivalent to {@link YearQuarter.plusQuarters}.
* - `YEARS` -
* Returns a `YearQuarter` with the specified number of years added.
* This is equivalent to {@link YearQuarter.plusYears}.
* - `DECADES` -
* Returns a `YearQuarter` with the specified number of decades added.
* This is equivalent to calling {@link YearQuarter.plusYears} with the amount
* multiplied by 10.
* - `CENTURIES` -
* Returns a `YearQuarter` with the specified number of centuries added.
* This is equivalent to calling {@link YearQuarter.plusYears} with the amount
* multiplied by 100.
* - `MILLENNIA` -
* Returns a `YearQuarter` with the specified number of millennia added.
* This is equivalent to calling {@link YearQuarter.plusYears} with the amount
* multiplied by 1,000.
* - `ERAS` -
* Returns a `YearQuarter` with the specified number of eras added.
* Only two eras are supported so the amount must be one, zero or minus one.
* If the amount is non-zero then the year is changed such that the year-of-era
* is unchanged.
*
* All other `ChronoUnit` instances will throw an `UnsupportedTemporalTypeException`.
*
* 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 {YearQuarter} a `YearQuarter` based on this year-quarter 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 === IsoFields.QUARTER_YEARS) {
return this.plusQuarters(amountToAdd);
} else if (unit instanceof ChronoUnit) {
switch (unit) {
case ChronoUnit.YEARS:
return this.plusYears(amountToAdd);
case ChronoUnit.DECADES:
return this.plusYears(MathUtil.safeMultiply(amountToAdd, 10));
case ChronoUnit.CENTURIES:
return this.plusYears(MathUtil.safeMultiply(amountToAdd, 100));
case ChronoUnit.MILLENNIA:
return this.plusYears(MathUtil.safeMultiply(amountToAdd, 1000));
case ChronoUnit.ERAS:
return this.with(ChronoField.ERA, MathUtil.safeAdd(this.getLong(ChronoField.ERA), amountToAdd));
default:
throw new UnsupportedTemporalTypeException(`Unsupported unit: ${unit}`);
}
}
return unit.addTo(this, amountToAdd);
}
/**
* Returns a copy of this year-quarter with the specified period in years added.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} yearsToAdd - the years to add, may be negative
* @return {YearQuarter} a `YearQuarter` based on this year-quarter with the years added, not null
* @throws {DateTimeException} if the result exceeds the supported range
*/
plusYears(yearsToAdd) {
if (yearsToAdd === 0) {
return this;
}
const newYear = ChronoField.YEAR.checkValidIntValue(this._year + yearsToAdd); // safe overflow
return this._with(newYear, this._quarter);
}
/**
* Returns a copy of this year-quarter with the specified period in quarters added.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} quartersToAdd - the quarters to add, may be negative
* @return {YearQuarter} a `YearQuarter` based on this year-quarter with the quarters added, not null
* @throws {DateTimeException} if the result exceeds the supported range
*/
plusQuarters(quartersToAdd) {
if (quartersToAdd === 0) {
return this;
}
const quarterCount = this._year * 4 + (this._quarter.value() - 1);
const calcQuarters = quarterCount + quartersToAdd; // safe overflow
const newYear = ChronoField.YEAR.checkValidIntValue(MathUtil.intDiv(calcQuarters, 4));
const newQuarter = MathUtil.floorMod(calcQuarters, 4) + 1;
return this._with(newYear, Quarter.of(newQuarter));
}
/**
* Returns a copy of this year-quarter with the specified period in years subtracted.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} yearsToSubtract - the years to subtract, may be negative
* @return {YearQuarter} a `YearQuarter` based on this year-quarter with the years subtracted, not null
* @throws {DateTimeException} if the result exceeds the supported range
*/
minusYears(yearsToSubtract) {
return (yearsToSubtract === MathUtil.MIN_SAFE_INTEGER ? this.plusYears(MathUtil.MIN_SAFE_INTEGER).plusYears(1) : this.plusYears(-yearsToSubtract));
}
/**
* Returns a copy of this year-quarter with the specified period in quarters subtracted.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} quartersToSubtract - the quarters to subtract, may be negative
* @return {YearQuarter} a `YearQuarter` based on this year-quarter with the quarters subtracted, not null
* @throws {DateTimeException} if the result exceeds the supported range
*/
minusQuarters(quartersToSubtract) {
return (quartersToSubtract === MathUtil.MIN_SAFE_INTEGER ? this.plusQuarters(MathUtil.MIN_SAFE_INTEGER).plusQuarters(1) : this.plusQuarters(-quartersToSubtract));
}
//-----------------------------------------------------------------------
/**
* Queries this year-quarter using the specified query.
*
* This queries this year-quarter 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) {
if (query === TemporalQueries.chronology()) {
return IsoChronology.INSTANCE;
} else if (query === TemporalQueries.precision()) {
return IsoFields.QUARTER_YEARS;
}
return super.query(query);
}
/**
* Adjusts the specified temporal object to have this year-quarter.
*
* This returns a temporal object of the same observable type as the input
* with the year and quarter changed to be the same as this.
*
* The adjustment is equivalent to using {@link Temporal.plus}
* passing the number of quarters to adjust by.
* If the specified temporal object does not use the ISO calendar system then
* a `DateTimeException` is thrown.
*
* In most cases, it is clearer to reverse the calling pattern by using
* {@link Temporal.with}:
* ```
* // these two lines are equivalent, but the second approach is recommended
* temporal = thisYearQuarter.adjustInto(temporal);
* temporal = temporal.with(thisYearQuarter);
* ```
*
* 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) {
/* TODO: only IsoChronology for now
if (Chronology.from(temporal).equals(IsoChronology.INSTANCE) == false) {
throw new DateTimeException('Adjustment only supported on ISO date-time');
}*/
const newProlepticQuarter = this._prolepticQuarter();
const oldProlepticQuarter = temporal.get(ChronoField.YEAR) * 4 + (temporal.get(IsoFields.QUARTER_OF_YEAR) - 1);
return temporal.plus(newProlepticQuarter - oldProlepticQuarter, IsoFields.QUARTER_YEARS);
}
/**
* Calculates the amount of time until another year-quarter in terms of the specified unit.
*
* This calculates the amount of time between two `YearQuarter`
* objects in terms of a single `TemporalUnit`.
* The start and end points are `this` and the specified year-quarter.
* The result will be negative if the end is before the start.
* The `Temporal` passed to this method is converted to a
* `YearQuarter` using {@link YearQuarter.from}.
* For example, the period in years between two year-quarters can be calculated
* using `startYearQuarter.until(endYearQuarter, YEARS)`.
*
* The calculation returns a whole number, representing the number of
* complete units between the two year-quarters.
* For example, the period in decades between 2012-Q3 and 2032-Q2
* will only be one decade as it is one quarter short of two decades.
*
* 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, QUARTER_YEARS);
* amount = QUARTER_YEARS.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 `QUARTER_YEARS`, `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 date, exclusive, which is converted to a `YearQuarter`, not null
* @param {TemporalUnit} unit - the unit to measure the amount in, not null
* @return {number} the amount of time between this year-quarter and the end year-quarter
* @throws {DateTimeException} if the amount cannot be calculated, or the end
* temporal cannot be converted to a `YearQuarter`
* @throws {UnsupportedTemporalTypeException} if the unit is not supported
* @throws {ArithmeticException} if numeric overflow occurs
*/
until(endExclusive, unit) {
requireNonNull(endExclusive, 'endExclusive');
requireNonNull(unit, 'unit');
requireInstance(endExclusive, Temporal, 'endExclusive');
requireInstance(unit, TemporalUnit, 'unit');
const end = YearQuarter.from(endExclusive);
const quartersUntil = end._prolepticQuarter() - this._prolepticQuarter(); // no overflow
if (unit === IsoFields.QUARTER_YEARS) {
return quartersUntil;
} else if (unit instanceof ChronoUnit) {
switch (unit) {
case ChronoUnit.YEARS:
return MathUtil.intDiv(quartersUntil, 4);
case ChronoUnit.DECADES:
return MathUtil.intDiv(quartersUntil, 40);
case ChronoUnit.CENTURIES:
return MathUtil.intDiv(quartersUntil, 400);
case ChronoUnit.MILLENNIA:
return MathUtil.intDiv(quartersUntil, 4000);
case ChronoUnit.ERAS:
return end.getLong(ChronoField.ERA) - this.getLong(ChronoField.ERA);
default:
throw new UnsupportedTemporalTypeException(`Unsupported unit: ${unit}`);
}
}
return unit.between(this, end);
}
/**
* Formats this year-quarter using the specified formatter.
*
* This year-quarter will be passed to the formatter to produce a string.
*
* @param {DateTimeFormatter} formatter - the formatter to use, not null
* @return {string} the formatted year-quarter string, not null
* @throws {DateTimeException} if an error occurs during printing
*/
format(formatter) {
requireNonNull(formatter, 'formatter');
return formatter.format(this);
}
//-----------------------------------------------------------------------
/**
* Combines this year-quarter with a day-of-quarter to create a `LocalDate`.
*
* This returns a `LocalDate` formed from this year-quarter and the specified day-of-quarter.
*
* The day-of-quarter value must be valid for the year-quarter.
*
* This method can be used as part of a chain to produce a date:
* ```
* LocalDate date = yearQuarter.atDay(day);
* ```
*
* @param {number} dayOfQuarter the day-of-quarter to use, from 1 to 92
* @return {LocalDate} the date formed from this year-quarter and the specified day, not null
* @throws {DateTimeException} if the day is invalid for the year-quarter
* @see {@link YearQuarter.isValidDay}
*/
atDay(dayOfQuarter) {
ValueRange.of(1, this.lengthOfQuarter()).checkValidValue(dayOfQuarter, IsoFields.DAY_OF_QUARTER);
const leap = Year.isLeap(this._year);
let month = this._quarter.firstMonth();
while (dayOfQuarter > month.length(leap)) {
dayOfQuarter -= month.length(leap);
month = month.plus(1);
}
return LocalDate.of(this._year, month, dayOfQuarter);
}
/**
* Returns a `LocalDate` at the end of the quarter.
*
* This returns a `LocalDate` based on this year-quarter.
* The day-of-quarter is set to the last valid day of the quarter, taking
* into account leap years.
*
* This method can be used as part of a chain to produce a date:
* ```
* LocalDate date = year.atQuarter(quarter).atEndOfQuarter();
* ```
*
* @return {LocalDate} the last valid date of this year-quarter, not null
*/
atEndOfQuarter() {
const month = this._quarter.firstMonth().plus(2);
return LocalDate.of(this._year, month, month.maxLength());
}
//-----------------------------------------------------------------------
/**
* Compares this year-quarter to another
*
* The comparison is based first on the value of the year, then on the value of the quarter.
* It is 'consistent with equals', as defined by {@link Comparable}.
*
* @param {YearQuarter} other - the other year-quarter to compare to, not null
* @return {number} the comparator value, negative if less, positive if greater
*/
compareTo(other) {
requireNonNull(other, 'other');
requireInstance(other, YearQuarter, 'other');
let cmp = (this._year - other._year);
if (cmp === 0) {
cmp = this._quarter.compareTo(other._quarter);
}
return cmp;
}
/**
* Is this year-quarter after the specified year-quarter.
*
* @param {YearQuarter} other - the other year-quarter to compare to, not null
* @return {boolean} true if this is after the specified year-quarter
*/
isAfter(other) {
return this.compareTo(other) > 0;
}
/**
* Is this year-quarter before the specified year-quarter.
*
* @param {YearQuarter} other - the other year-quarter to compare to, not null
* @return {boolean} true if this point is before the specified year-quarter
*/
isBefore(other) {
return this.compareTo(other) < 0;
}
//-----------------------------------------------------------------------
/**
* Checks if this year-quarter is equal to another year-quarter.
*
* The comparison is based on the time-line position of the year-quarters.
*
* @param {*} obj - the object to check, null returns false
* @return {boolean} true if this is equal to the other year-quarter
*/
equals(obj) {
if (this === obj) {
return true;
}
if (obj instanceof YearQuarter) {
const other = obj;
return this._year === other._year && this._quarter === other._quarter;
}
return false;
}
/**
* A hash code for this year-quarter.
*
* @return {number} a suitable hash code
*/
hashCode() {
return this._year ^ (this._quarter.value() << 27);
}
//-----------------------------------------------------------------------
/**
* Outputs this year-quarter as a `String`, such as `2007-Q2`.
*
* The output will be in the format `uuuu-'Q'Q`:
*
* @return {string} a string representation of this year-quarter, not null
*/
toString() {
let yearString;
const yearValue = this._year;
const absYear = Math.abs(yearValue);
if (absYear < 1000) {
if (yearValue < 0) {
yearString = `-${(`${yearValue - 10000}`).slice(-4)}`;
} else {
yearString = (`${yearValue + 10000}`).slice(-4);