/**
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* @copyright (c) 2016, Philipp Thürwächter & Pattrick Hüper
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* @copyright (c) 2007-present, Stephen Colebourne & Michael Nascimento Santos
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* @license BSD-3-Clause (see LICENSE in the root directory of this source tree)
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*/
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import { requireNonNull, requireInstance } from './assert';
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import { ArithmeticException, DateTimeParseException, UnsupportedTemporalTypeException } from './errors';
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import { MathUtil, MAX_SAFE_INTEGER, MIN_SAFE_INTEGER } from './MathUtil';
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import { ChronoField } from './temporal/ChronoField';
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import { ChronoUnit } from './temporal/ChronoUnit';
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import { TemporalAmount } from './temporal/TemporalAmount';
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import { TemporalUnit } from './temporal/TemporalUnit';
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import { LocalTime } from './LocalTime';
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/**
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* A time-based amount of time, such as '34.5 seconds'.
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*
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* This class models a quantity or amount of time in terms of seconds and nanoseconds.
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* It can be accessed using other duration-based units, such as minutes and hours.
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* In addition, the {@link ChronoUnit#DAYS} unit can be used and is treated as
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* exactly equal to 24 hours, thus ignoring daylight savings effects.
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* See {@link Period} for the date-based equivalent to this class.
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*
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* A physical duration could be of infinite length.
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* For practicality, the duration is stored with constraints similar to {@link Instant}.
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* The duration uses nanosecond resolution with a maximum value of the seconds that can
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* be held in a `long`. This is greater than the current estimated age of the universe.
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*
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* The range of a duration requires the storage of a number larger than a `long`.
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* To achieve this, the class stores a `long` representing seconds and an `int`
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* representing nanosecond-of-second, which will always be between 0 and 999,999,999.
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*
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* The duration is measured in "seconds", but these are not necessarily identical to
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* the scientific "SI second" definition based on atomic clocks.
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* This difference only impacts durations measured near a leap-second and should not affect
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* most applications.
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* See {@link Instant} for a discussion as to the meaning of the second and time-scales.
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*
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* ### Static properties of Class {@link Duration}
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*
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* Duration.ZERO
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*
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* Constant for a duration of zero.
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*
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*/
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export class Duration extends TemporalAmount /*implements TemporalAmount, Comparable<Duration>, Serializable */ {
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/**
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* Constructs an instance of {@link Duration} using seconds and nanoseconds.
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*
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* @param {Number} seconds - the length of the duration in seconds, positive or negative
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* @param {Number} nanos - the nanoseconds within the second, from 0 to 999,999,999
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* @private
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*/
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constructor(seconds, nanos) {
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super();
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this._seconds = MathUtil.safeToInt(seconds);
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this._nanos = MathUtil.safeToInt(nanos);
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}
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//-----------------------------------------------------------------------
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/**
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* Obtains an instance of {@link Duration} from a number of standard 24 hour days.
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*
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* The seconds are calculated based on the standard definition of a day,
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* where each day is 86400 seconds which implies a 24 hour day.
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* The nanosecond in second field is set to zero.
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*
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* @param {Number} days - the number of days, positive or negative
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* @return {!Duration}
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* @throws ArithmeticException if the input days exceeds the capacity of {@link Duration}
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*/
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static ofDays(days) {
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return Duration._create(MathUtil.safeMultiply(days, LocalTime.SECONDS_PER_DAY), 0);
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}
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/**
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* Obtains an instance of {@link Duration} from a number of standard hours.
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*
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* The seconds are calculated based on the standard definition of an hour,
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* where each hour is 3600 seconds.
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* The nanosecond in second field is set to zero.
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*
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* @param {Number} hours - the number of hours, positive or negative
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* @return {!Duration}
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* @throws ArithmeticException if the input hours exceeds the capacity of {@link Duration}
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*/
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static ofHours(hours) {
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return Duration._create(MathUtil.safeMultiply(hours, LocalTime.SECONDS_PER_HOUR), 0);
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}
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/**
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* Obtains an instance of {@link Duration} from a number of standard minutes.
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*
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* The seconds are calculated based on the standard definition of a minute,
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* where each minute is 60 seconds.
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* The nanosecond in second field is set to zero.
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*
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* @param {Number} minutes - the number of minutes, positive or negative
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* @return {!Duration}
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* @throws ArithmeticException if the input minutes exceeds the capacity of {@link Duration}
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*/
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static ofMinutes(minutes) {
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return Duration._create(MathUtil.safeMultiply(minutes, LocalTime.SECONDS_PER_MINUTE), 0);
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}
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//-----------------------------------------------------------------------
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/**
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* Obtains an instance of {@link Duration} from a number of seconds
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* and an adjustment in nanoseconds.
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*
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* This method allows an arbitrary number of nanoseconds to be passed in.
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* The factory will alter the values of the second and nanosecond in order
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* to ensure that the stored nanosecond is in the range 0 to 999,999,999.
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* For example, the following will result in the exactly the same duration:
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* <pre>
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* Duration.ofSeconds(3, 1);
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* Duration.ofSeconds(4, -999_999_999);
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* Duration.ofSeconds(2, 1000_000_001);
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* </pre>
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*
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* @param {Number} seconds - the number of seconds, positive or negative
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* @param {Number} nanoAdjustment the nanosecond adjustment to the number of seconds, positive or negative
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* @return {!Duration}
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* @throws ArithmeticException if the adjustment causes the seconds to exceed the capacity of {@link Duration}
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*/
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static ofSeconds(seconds, nanoAdjustment = 0) {
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const secs = MathUtil.safeAdd(seconds, MathUtil.floorDiv(nanoAdjustment, LocalTime.NANOS_PER_SECOND));
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const nos = MathUtil.floorMod(nanoAdjustment, LocalTime.NANOS_PER_SECOND);
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return Duration._create(secs, nos);
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}
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//-----------------------------------------------------------------------
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/**
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* Obtains an instance of {@link Duration} from a number of milliseconds.
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*
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* The seconds and nanoseconds are extracted from the specified milliseconds.
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*
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* @param {Number} millis - the number of milliseconds, positive or negative
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* @return {!Duration}
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*/
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static ofMillis(millis) {
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let secs = MathUtil.intDiv(millis, 1000);
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let mos = MathUtil.intMod(millis, 1000);
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if (mos < 0) {
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mos += 1000;
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secs--;
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}
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return Duration._create(secs, mos * 1000000);
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}
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//-----------------------------------------------------------------------
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/**
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* Obtains an instance of {@link Duration} from a number of nanoseconds.
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*
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* The seconds and nanoseconds are extracted from the specified nanoseconds.
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*
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* @param {Number} nanos - the number of nanoseconds, positive or negative
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* @return {!Duration}
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*/
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static ofNanos(nanos) {
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let secs = MathUtil.intDiv(nanos, LocalTime.NANOS_PER_SECOND);
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let nos = MathUtil.intMod(nanos, LocalTime.NANOS_PER_SECOND);
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if (nos < 0) {
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nos += LocalTime.NANOS_PER_SECOND;
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secs--;
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}
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return this._create(secs, nos);
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}
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//-----------------------------------------------------------------------
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/**
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* Obtains an instance of {@link Duration} from a duration in the specified unit.
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*
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* The parameters represent the two parts of a phrase like '6 Hours'. For example:
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* <pre>
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* Duration.of(3, SECONDS);
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* Duration.of(465, HOURS);
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* </pre>
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* Only a subset of units are accepted by this method.
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* The unit must either have an exact duration (see {@link TemporalUnit#isDurationEstimated}) or
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* be {@link ChronoUnit#DAYS} which is treated as 24 hours. Other units throw an exception.
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*
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* @param {Number} amount - the amount of the duration, measured in terms of the unit, positive or negative
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* @param {TemporalUnit} unit - the unit that the duration is measured in, must have an exact duration, not null
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* @return {!Duration}
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* @throws DateTimeException if the period unit has an estimated duration
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* @throws ArithmeticException if a numeric overflow occurs
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*/
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static of(amount, unit) {
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return Duration.ZERO.plus(amount, unit);
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}
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//-----------------------------------------------------------------------
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/**
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* Obtains an instance of {@link Duration} from an amount.
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*
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* This obtains a duration based on the specified amount.
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* A TemporalAmount represents an amount of time, which may be date-based
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* or time-based, which this factory extracts to a duration.
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*
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* The conversion loops around the set of units from the amount and uses
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* the duration of the unit to calculate the total Duration.
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* Only a subset of units are accepted by this method.
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* The unit must either have an exact duration or be ChronoUnit.DAYS which
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* is treated as 24 hours. If any other units are found then an exception is thrown.
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*
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* @param {TemporalAmount} amount - the temporal amount to convert, not null
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* @return {Duration} the resulting duration, not null
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* @throws DateTimeException if the amount cannot be converted
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* @throws ArithmeticException if a numeric overflow occurs
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*/
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static from(amount) {
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requireNonNull(amount, 'amount');
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requireInstance(amount, TemporalAmount);
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let duration = Duration.ZERO;
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amount.units().forEach((unit) => {
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duration = duration.plus(amount.get(unit), unit);
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});
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return duration;
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}
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/**
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* Obtains an instance of {@link Duration} representing the duration between two instants.
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*
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* Obtains a {@link Duration} representing the duration between two instants.
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* This calculates the duration between two temporal objects of the same type.
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* The difference in seconds is calculated using {@link Temporal#until}.
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* The difference in nanoseconds is calculated using by querying the
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* {@link ChronoField#NANO_OF_SECOND} field.
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*
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* The result of this method can be a negative period if the end is before the start.
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* To guarantee to obtain a positive duration call abs() on the result.
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*
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* @param {Temporal} startInclusive - the start instant, inclusive, not null
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* @param {Temporal} endExclusive - the end instant, exclusive, not null
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* @return {!Duration}
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* @throws DateTimeException if the seconds between the temporals cannot be obtained
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* @throws ArithmeticException if the calculation exceeds the capacity of {@link Duration}
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*/
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static between(startInclusive, endExclusive) {
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requireNonNull(startInclusive, 'startInclusive');
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requireNonNull(endExclusive, 'endExclusive');
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let secs = startInclusive.until(endExclusive, ChronoUnit.SECONDS);
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let nanos = 0;
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if (startInclusive.isSupported(ChronoField.NANO_OF_SECOND) && endExclusive.isSupported(ChronoField.NANO_OF_SECOND)) {
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try {
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const startNos = startInclusive.getLong(ChronoField.NANO_OF_SECOND);
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nanos = endExclusive.getLong(ChronoField.NANO_OF_SECOND) - startNos;
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if (secs > 0 && nanos < 0) {
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nanos += LocalTime.NANOS_PER_SECOND;
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} else if (secs < 0 && nanos > 0) {
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nanos -= LocalTime.NANOS_PER_SECOND;
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} else if (secs === 0 && nanos !== 0) {
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// two possible meanings for result, so recalculate secs
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const adjustedEnd = endExclusive.with(ChronoField.NANO_OF_SECOND, startNos);
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secs = startInclusive.until(adjustedEnd, ChronoUnit.SECONDS);
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}
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} catch (e) {
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// ignore and only use seconds
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}
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}
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return this.ofSeconds(secs, nanos);
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}
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//-----------------------------------------------------------------------
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/**
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* Obtains a {@link Duration} from a text string such as {@link PnDTnHnMn.nS}.
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*
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* This will parse a textual representation of a duration, including the
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* string produced by {@link toString}. The formats accepted are based
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* on the ISO-8601 duration format {@link PnDTnHnMn.nS} with days
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* considered to be exactly 24 hours.
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*
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* The string starts with an optional sign, denoted by the ASCII negative
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* or positive symbol. If negative, the whole period is negated.
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* The ASCII letter "P" is next in upper or lower case.
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* There are then four sections, each consisting of a number and a suffix.
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* The sections have suffixes in ASCII of "D", "H", "M" and "S" for
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* days, hours, minutes and seconds, accepted in upper or lower case.
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* The suffixes must occur in order. The ASCII letter "T" must occur before
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* the first occurrence, if any, of an hour, minute or second section.
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* At least one of the four sections must be present, and if "T" is present
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* there must be at least one section after the "T".
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* The number part of each section must consist of one or more ASCII digits.
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* The number may be prefixed by the ASCII negative or positive symbol.
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* The number of days, hours and minutes must parse to a `long`.
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* The number of seconds must parse to a `long` with optional fraction.
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* The decimal point may be either a dot or a comma.
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* The fractional part may have from zero to 9 digits.
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*
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* The leading plus/minus sign, and negative values for other units are
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* not part of the ISO-8601 standard.
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*
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* Examples:
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* <pre>
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* "PT20.345S" -> parses as "20.345 seconds"
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* "PT15M" -> parses as "15 minutes" (where a minute is 60 seconds)
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* "PT10H" -> parses as "10 hours" (where an hour is 3600 seconds)
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* "P2D" -> parses as "2 days" (where a day is 24 hours or 86400 seconds)
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* "P2DT3H4M" -> parses as "2 days, 3 hours and 4 minutes"
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* "P-6H3M" -> parses as "-6 hours and +3 minutes"
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* "-P6H3M" -> parses as "-6 hours and -3 minutes"
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* "-P-6H+3M" -> parses as "+6 hours and -3 minutes"
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* </pre>
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*
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* @param {String} text - the text to parse, not null
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* @return {Duration} the parsed duration, not null
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* @throws DateTimeParseException if the text cannot be parsed to a duration
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*/
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static parse(text) {
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requireNonNull(text, 'text');
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/**
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* The pattern for parsing.
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*/
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const PATTERN = new RegExp('([-+]?)P(?:([-+]?[0-9]+)D)?(T(?:([-+]?[0-9]+)H)?(?:([-+]?[0-9]+)M)?(?:([-+]?[0-9]+)(?:[.,]([0-9]{0,9}))?S)?)?', 'i');
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const matches = PATTERN.exec(text);
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if (matches !== null) {
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// check for letter T but no time sections
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if ('T' === matches[3] === false) {
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const negate = '-' === matches[1];
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const dayMatch = matches[2];
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const hourMatch = matches[4];
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const minuteMatch = matches[5];
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const secondMatch = matches[6];
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const fractionMatch = matches[7];
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if (dayMatch != null || hourMatch != null || minuteMatch != null || secondMatch != null) {
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const daysAsSecs = Duration._parseNumber(text, dayMatch, LocalTime.SECONDS_PER_DAY, 'days');
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const hoursAsSecs = Duration._parseNumber(text, hourMatch, LocalTime.SECONDS_PER_HOUR, 'hours');
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const minsAsSecs = Duration._parseNumber(text, minuteMatch, LocalTime.SECONDS_PER_MINUTE, 'minutes');
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const seconds = Duration._parseNumber(text, secondMatch, 1, 'seconds');
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const negativeSecs = secondMatch != null && secondMatch.charAt(0) === '-';
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const nanos = Duration._parseFraction(text, fractionMatch, negativeSecs ? -1 : 1);
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try {
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return Duration._create(negate, daysAsSecs, hoursAsSecs, minsAsSecs, seconds, nanos);
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} catch (ex) {
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throw new DateTimeParseException('Text cannot be parsed to a Duration: overflow', text, 0, ex);
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}
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}
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}
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}
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throw new DateTimeParseException('Text cannot be parsed to a Duration', text, 0);
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}
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static _parseNumber(text, parsed, multiplier, errorText) {
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// regex limits to [-+]?[0-9]+
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if (parsed == null) {
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return 0;
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}
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try {
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if (parsed[0] === '+') {
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parsed = parsed.substring(1);
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}
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return MathUtil.safeMultiply(parseFloat(parsed), multiplier);
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} catch (ex) {
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throw new DateTimeParseException(`Text cannot be parsed to a Duration: ${errorText}`, text, 0, ex);
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}
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}
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static _parseFraction(text, parsed, negate) {
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// regex limits to [0-9]{0,9}
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if (parsed == null || parsed.length === 0) {
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return 0;
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}
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parsed = (`${parsed}000000000`).substring(0, 9);
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return parseFloat(parsed) * negate;
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}
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//-----------------------------------------------------------------------
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/**
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* to handle function overriding this function accepts any number of arguments, checks their type and delegates to the appropriate
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* function
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*
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* @return {Duration}
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*/
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static _create() {
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if (arguments.length <= 2) {
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return Duration._createSecondsNanos(arguments[0], arguments[1]);
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} else {
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return Duration._createNegateDaysHoursMinutesSecondsNanos(arguments[0], arguments[1], arguments[2], arguments[3], arguments[4], arguments[5]);
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}
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}
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static _createNegateDaysHoursMinutesSecondsNanos(negate, daysAsSecs, hoursAsSecs, minsAsSecs, secs, nanos) {
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const seconds = MathUtil.safeAdd(daysAsSecs, MathUtil.safeAdd(hoursAsSecs, MathUtil.safeAdd(minsAsSecs, secs)));
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if (negate) {
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return Duration.ofSeconds(seconds, nanos).negated();
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}
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return Duration.ofSeconds(seconds, nanos);
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}
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/**
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* Obtains an instance of {@link Duration} using seconds and nanoseconds.
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*
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* @param {Number} seconds - the length of the duration in seconds, positive or negative
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* @param {Number} nanoAdjustment - the nanosecond adjustment within the second, from 0 to 999,999,999
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*/
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static _createSecondsNanos(seconds = 0, nanoAdjustment = 0) {
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if (seconds === 0 && nanoAdjustment === 0) {
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return Duration.ZERO;
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}
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return new Duration(seconds, nanoAdjustment);
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}
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//-----------------------------------------------------------------------
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/**
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* Gets the value of the requested unit.
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*
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* This returns a value for each of the two supported units,
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* {@link ChronoUnit#SECONDS} and {@link ChronoUnit#NANOS}.
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* All other units throw an exception.
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*
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* @param {TemporalUnit} unit the {@link TemporalUnit} for which to return the value
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* @return {number} the const value of the unit
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* @throws DateTimeException if the unit is not supported
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* @throws UnsupportedTemporalTypeException if the unit is not supported
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*/
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get(unit) {
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if (unit === ChronoUnit.SECONDS) {
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return this._seconds;
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} else if (unit === ChronoUnit.NANOS) {
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return this._nanos;
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} else {
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throw new UnsupportedTemporalTypeException(`Unsupported unit: ${unit}`);
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}
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}
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units() {
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return [ChronoUnit.SECONDS, ChronoUnit.NANOS];
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}
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//-----------------------------------------------------------------------
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/**
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* Checks if this duration is zero length.
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*
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* A {@link Duration} represents a directed distance between two points on
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* the time-line and can therefore be positive, zero or negative.
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* This method checks whether the length is zero.
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*
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* @return {boolean} true if this duration has a total length equal to zero
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*/
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isZero() {
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return this._seconds === 0 && this._nanos === 0;
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}
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/**
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* Checks if this duration is negative, excluding zero.
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*
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* A {@link Duration} represents a directed distance between two points on
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* the time-line and can therefore be positive, zero or negative.
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* This method checks whether the length is less than zero.
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*
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* @return {boolean} true if this duration has a total length less than zero
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*/
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isNegative() {
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return this._seconds < 0;
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}
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//-----------------------------------------------------------------------
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/**
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* Gets the number of seconds in this duration.
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*
|
* The length of the duration is stored using two fields - seconds and nanoseconds.
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* The nanoseconds part is a value from 0 to 999,999,999 that is an adjustment to
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* the length in seconds.
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* The total duration is defined by calling this method and {@link getNano}.
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*
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* A {@link Duration} represents a directed distance between two points on the time-line.
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* A negative duration is expressed by the negative sign of the seconds part.
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* A duration of -1 nanosecond is stored as -1 seconds plus 999,999,999 nanoseconds.
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*
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* @return {number} the whole seconds part of the length of the duration, positive or negative
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*/
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seconds() {
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return this._seconds;
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}
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|
/**
|
* Gets the number of nanoseconds within the second in this duration.
|
*
|
* The length of the duration is stored using two fields - seconds and nanoseconds.
|
* The nanoseconds part is a value from 0 to 999,999,999 that is an adjustment to
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* the length in seconds.
|
* The total duration is defined by calling this method and {@link getSeconds}.
|
*
|
* A {@link Duration} represents a directed distance between two points on the time-line.
|
* A negative duration is expressed by the negative sign of the seconds part.
|
* A duration of -1 nanosecond is stored as -1 seconds plus 999,999,999 nanoseconds.
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*
|
* @return {number} the nanoseconds within the second part of the length of the duration, from 0 to 999,999,999
|
*/
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nano() {
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return this._nanos;
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}
|
|
//-----------------------------------------------------------------------
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/**
|
* Returns a copy of this duration with the specified amount of seconds.
|
*
|
* This returns a duration with the specified seconds, retaining the
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* nano-of-second part of this duration.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} seconds - the seconds to represent, may be negative
|
* @return {Duration} based on this period with the requested seconds, not null
|
*/
|
withSeconds(seconds) {
|
return Duration._create(seconds, this._nanos);
|
}
|
|
/**
|
* Returns a copy of this duration with the specified nano-of-second.
|
*
|
* This returns a duration with the specified nano-of-second, retaining the
|
* seconds part of this duration.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} nanoOfSecond - the nano-of-second to represent, from 0 to 999,999,999
|
* @return {Duration} based on this period with the requested nano-of-second, not null
|
* @throws DateTimeException if the nano-of-second is invalid
|
*/
|
withNanos(nanoOfSecond) {
|
ChronoField.NANO_OF_SECOND.checkValidIntValue(nanoOfSecond);
|
return Duration._create(this._seconds, nanoOfSecond);
|
}
|
|
//-----------------------------------------------------------------------
|
/**
|
* Returns a copy of this duration with the specified duration added.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Duration} duration - the duration to add, positive or negative, not null
|
* @return {Duration} based on this duration with the specified duration added, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
plusDuration(duration) {
|
requireNonNull(duration, 'duration');
|
return this.plus(duration.seconds(), duration.nano());
|
}
|
|
|
/**
|
* function overloading for {@link Duration.plus}
|
*
|
* if called with 1 arguments, then {@link Duration.plusDuration} is executed.
|
*
|
* if called with 2 arguments and second argument is an instance of TemporalUnit, then {@link Duration.plusAmountUnit} is executed.
|
*
|
* Otherwise {@link Duration.plusSecondsNanos} is executed.
|
*
|
* @param {!(Duration|number)} durationOrNumber
|
* @param {!TemporalUnit|number} unitOrNumber
|
* @returns {Duration}
|
*/
|
plus(durationOrNumber, unitOrNumber) {
|
if (arguments.length === 1) {
|
return this.plusDuration(durationOrNumber);
|
}
|
else if (arguments.length === 2 && unitOrNumber instanceof TemporalUnit) {
|
return this.plusAmountUnit(durationOrNumber, unitOrNumber);
|
} else {
|
return this.plusSecondsNanos(durationOrNumber, unitOrNumber);
|
}
|
}
|
|
/**
|
* Returns a copy of this duration with the specified duration added.
|
*
|
* The duration amount is measured in terms of the specified unit.
|
* Only a subset of units are accepted by this method.
|
* The unit must either have an exact duration (see {@link TemporalUnit#isDurationEstimated}) or
|
* be {@link ChronoUnit#DAYS} which is treated as 24 hours. Other units throw an exception.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} amountToAdd - the amount to add, measured in terms of the unit, positive or negative
|
* @param {TemporalUnit} unit - the unit that the amount is measured in, must have an exact duration, not null
|
* @return {Duration} based on this duration with the specified duration added, not null
|
* @throws UnsupportedTemporalTypeException if the unit is not supported
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
plusAmountUnit(amountToAdd, unit) {
|
requireNonNull(amountToAdd, 'amountToAdd');
|
requireNonNull(unit, 'unit');
|
if (unit === ChronoUnit.DAYS) {
|
return this.plusSecondsNanos(MathUtil.safeMultiply(amountToAdd, LocalTime.SECONDS_PER_DAY), 0);
|
}
|
if (unit.isDurationEstimated()) {
|
throw new UnsupportedTemporalTypeException('Unit must not have an estimated duration');
|
}
|
if (amountToAdd === 0) {
|
return this;
|
}
|
if (unit instanceof ChronoUnit) {
|
switch (unit) {
|
case ChronoUnit.NANOS: return this.plusNanos(amountToAdd);
|
case ChronoUnit.MICROS: return this.plusSecondsNanos(MathUtil.intDiv(amountToAdd, (1000000 * 1000)) * 1000, MathUtil.intMod(amountToAdd, (1000000 * 1000)) * 1000);
|
case ChronoUnit.MILLIS: return this.plusMillis(amountToAdd);
|
case ChronoUnit.SECONDS: return this.plusSeconds(amountToAdd);
|
}
|
return this.plusSecondsNanos(MathUtil.safeMultiply(unit.duration().seconds(), amountToAdd), 0);
|
}
|
const duration = unit.duration().multipliedBy(amountToAdd);
|
return this.plusSecondsNanos(duration.seconds(), duration.nano());
|
}
|
|
//-----------------------------------------------------------------------
|
/**
|
* Returns a copy of this duration with the specified duration in 24 hour days added.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} daysToAdd - the days to add, positive or negative
|
* @return {Duration} based on this duration with the specified days added, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
plusDays(daysToAdd) {
|
return this.plusSecondsNanos(MathUtil.safeMultiply(daysToAdd, LocalTime.SECONDS_PER_DAY), 0);
|
}
|
|
/**
|
* Returns a copy of this duration with the specified duration in hours added.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} hoursToAdd - the hours to add, positive or negative
|
* @return {Duration} based on this duration with the specified hours added, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
plusHours(hoursToAdd) {
|
return this.plusSecondsNanos(MathUtil.safeMultiply(hoursToAdd, LocalTime.SECONDS_PER_HOUR), 0);
|
}
|
|
/**
|
* Returns a copy of this duration with the specified duration in minutes added.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} minutesToAdd - the minutes to add, positive or negative
|
* @return {Duration} based on this duration with the specified minutes added, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
plusMinutes(minutesToAdd) {
|
return this.plusSecondsNanos(MathUtil.safeMultiply(minutesToAdd, LocalTime.SECONDS_PER_MINUTE), 0);
|
}
|
|
/**
|
* Returns a copy of this duration with the specified duration in seconds added.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} secondsToAdd - the seconds to add, positive or negative
|
* @return {Duration} based on this duration with the specified seconds added, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
plusSeconds(secondsToAdd) {
|
return this.plusSecondsNanos(secondsToAdd, 0);
|
}
|
|
/**
|
* Returns a copy of this duration with the specified duration in milliseconds added.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} millisToAdd - the milliseconds to add, positive or negative
|
* @return {Duration} based on this duration with the specified milliseconds added, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
plusMillis(millisToAdd) {
|
return this.plusSecondsNanos(MathUtil.intDiv(millisToAdd, 1000), MathUtil.intMod(millisToAdd, 1000) * 1000000);
|
}
|
|
/**
|
* Returns a copy of this duration with the specified duration in nanoseconds added.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} nanosToAdd - the nanoseconds to add, positive or negative
|
* @return {Duration} based on this duration with the specified nanoseconds added, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
plusNanos(nanosToAdd) {
|
return this.plusSecondsNanos(0, nanosToAdd);
|
}
|
|
/**
|
* Returns a copy of this duration with the specified duration added.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} secondsToAdd - the seconds to add, positive or negative
|
* @param {Number} nanosToAdd - the nanos to add, positive or negative
|
* @return {Duration} based on this duration with the specified seconds added, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
plusSecondsNanos(secondsToAdd, nanosToAdd) {
|
requireNonNull(secondsToAdd, 'secondsToAdd');
|
requireNonNull(nanosToAdd, 'nanosToAdd');
|
if (secondsToAdd === 0 && nanosToAdd === 0) {
|
return this;
|
}
|
let epochSec = MathUtil.safeAdd(this._seconds, secondsToAdd);
|
epochSec = MathUtil.safeAdd(epochSec, MathUtil.intDiv(nanosToAdd, LocalTime.NANOS_PER_SECOND));
|
nanosToAdd = MathUtil.intMod(nanosToAdd, LocalTime.NANOS_PER_SECOND);
|
const nanoAdjustment = MathUtil.safeAdd(this._nanos, nanosToAdd); // safe int+LocalTime.NANOS_PER_SECOND
|
return Duration.ofSeconds(epochSec, nanoAdjustment);
|
}
|
|
//-----------------------------------------------------------------------
|
/**
|
* function overloading for {@link Duration.minus}
|
*
|
* if called with 1 arguments and first argument is an instance of Duration, then {@link Duration.minusDuration} is executed.
|
*
|
* Otherwise {@link Duration.minusAmountUnit} is executed.
|
*
|
* @param {!(Duration|number)} durationOrNumber
|
* @param {?TemporalUnit} unit
|
* @return {Duration}
|
*/
|
minus(durationOrNumber, unit) {
|
if (arguments.length === 1) {
|
return this.minusDuration(durationOrNumber);
|
} else {
|
return this.minusAmountUnit(durationOrNumber, unit);
|
}
|
}
|
|
/**
|
* Returns a copy of this duration with the specified duration subtracted.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Duration} duration - the duration to subtract, positive or negative, not null
|
* @return {Duration} based on this duration with the specified duration subtracted, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
minusDuration(duration) {
|
requireNonNull(duration, 'duration');
|
const secsToSubtract = duration.seconds();
|
const nanosToSubtract = duration.nano();
|
if (secsToSubtract === MIN_SAFE_INTEGER) {
|
return this.plus(MAX_SAFE_INTEGER, -nanosToSubtract);
|
}
|
return this.plus(-secsToSubtract, -nanosToSubtract);
|
}
|
|
/**
|
* Returns a copy of this duration with the specified duration subtracted.
|
*
|
* The duration amount is measured in terms of the specified unit.
|
* Only a subset of units are accepted by this method.
|
* The unit must either have an exact duration (see {@link TemporalUnit#isDurationEstimated}) or
|
* be {@link ChronoUnit#DAYS} which is treated as 24 hours. Other units throw an exception.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} amountToSubtract - the amount to subtract, measured in terms of the unit, positive or negative
|
* @param {TemporalUnit} unit - the unit that the amount is measured in, must have an exact duration, not null
|
* @return {Duration} based on this duration with the specified duration subtracted, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
minusAmountUnit(amountToSubtract, unit) {
|
requireNonNull(amountToSubtract, 'amountToSubtract');
|
requireNonNull(unit, 'unit');
|
return (amountToSubtract === MIN_SAFE_INTEGER ? this.plusAmountUnit(MAX_SAFE_INTEGER, unit) : this.plusAmountUnit(-amountToSubtract, unit));
|
}
|
|
//-----------------------------------------------------------------------
|
/**
|
* Returns a copy of this duration with the specified duration in 24 hour days subtracted.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} daysToSubtract - the days to subtract, positive or negative
|
* @return {Duration} based on this duration with the specified days subtracted, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
minusDays(daysToSubtract) {
|
return (daysToSubtract === MIN_SAFE_INTEGER ? this.plusDays(MAX_SAFE_INTEGER) : this.plusDays(-daysToSubtract));
|
}
|
|
/**
|
* Returns a copy of this duration with the specified duration in hours subtracted.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} hoursToSubtract - the hours to subtract, positive or negative
|
* @return {Duration} based on this duration with the specified hours subtracted, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
minusHours(hoursToSubtract) {
|
return (hoursToSubtract === MIN_SAFE_INTEGER ? this.plusHours(MAX_SAFE_INTEGER) : this.plusHours(-hoursToSubtract));
|
}
|
|
/**
|
* Returns a copy of this duration with the specified duration in minutes subtracted.
|
*
|
* The number of hours is multiplied by 60 to obtain the number of seconds to subtract.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} minutesToSubtract - the minutes to subtract, positive or negative
|
* @return {Duration} based on this duration with the specified minutes subtracted, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
minusMinutes(minutesToSubtract) {
|
return (minutesToSubtract === MIN_SAFE_INTEGER ? this.plusMinutes(MAX_SAFE_INTEGER) : this.plusMinutes(-minutesToSubtract));
|
}
|
|
/**
|
* Returns a copy of this duration with the specified duration in seconds subtracted.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} secondsToSubtract - the seconds to subtract, positive or negative
|
* @return {Duration} based on this duration with the specified seconds subtracted, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
minusSeconds(secondsToSubtract) {
|
return (secondsToSubtract === MIN_SAFE_INTEGER ? this.plusSeconds(MAX_SAFE_INTEGER) : this.plusSeconds(-secondsToSubtract));
|
}
|
|
/**
|
* Returns a copy of this duration with the specified duration in milliseconds subtracted.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} millisToSubtract - the milliseconds to subtract, positive or negative
|
* @return {Duration} based on this duration with the specified milliseconds subtracted, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
minusMillis(millisToSubtract) {
|
return (millisToSubtract === MIN_SAFE_INTEGER ? this.plusMillis(MAX_SAFE_INTEGER) : this.plusMillis(-millisToSubtract));
|
}
|
|
/**
|
* Returns a copy of this duration with the specified duration in nanoseconds subtracted.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} nanosToSubtract - the nanoseconds to subtract, positive or negative
|
* @return {Duration} based on this duration with the specified nanoseconds subtracted, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
minusNanos(nanosToSubtract) {
|
return (nanosToSubtract === MIN_SAFE_INTEGER ? this.plusNanos(MAX_SAFE_INTEGER) : this.plusNanos(-nanosToSubtract));
|
}
|
|
//-----------------------------------------------------------------------
|
/**
|
* Returns a copy of this duration multiplied by the scalar.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Number} multiplicand - the value to multiply the duration by, positive or negative
|
* @return {Duration} based on this duration multiplied by the specified scalar, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
multipliedBy(multiplicand) {
|
if (multiplicand === 0) {
|
return Duration.ZERO;
|
}
|
if (multiplicand === 1) {
|
return this;
|
}
|
let secs = MathUtil.safeMultiply(this._seconds, multiplicand);
|
let nos = MathUtil.safeMultiply(this._nanos, multiplicand);
|
secs = secs + MathUtil.intDiv(nos, LocalTime.NANOS_PER_SECOND);
|
nos = MathUtil.intMod(nos, LocalTime.NANOS_PER_SECOND);
|
return Duration.ofSeconds(secs, nos);
|
}
|
|
/**
|
* Returns a copy of this duration divided by the specified value.
|
*
|
* In opposite to the threeten implementation the division is realized by floating point not by
|
* fixed point arithmetic. Expect floating point rounding errors for {@link Duration.dividedBy}.
|
*
|
* @param {Number} divisor - the value to divide the duration by, positive or negative, not zero
|
* @return {Duration} based on this duration divided by the specified divisor, not null
|
* @throws ArithmeticException if the divisor is zero or if numeric overflow occurs
|
*/
|
dividedBy(divisor) {
|
if (divisor === 0) {
|
throw new ArithmeticException('Cannot divide by zero');
|
}
|
if (divisor === 1) {
|
return this;
|
}
|
const secs = MathUtil.intDiv(this._seconds, divisor);
|
const secsMod = MathUtil.roundDown(((this._seconds/ divisor) - secs) * LocalTime.NANOS_PER_SECOND);
|
let nos = MathUtil.intDiv(this._nanos, divisor);
|
nos = secsMod + nos;
|
return Duration.ofSeconds(secs, nos);
|
}
|
|
//-----------------------------------------------------------------------
|
/**
|
* Returns a copy of this duration with the length negated.
|
*
|
* This method swaps the sign of the total length of this duration.
|
* For example, {@link PT1.3S} will be returned as {@link PT-1.3S}.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @return {Duration} based on this duration with the amount negated, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
negated() {
|
return this.multipliedBy(-1);
|
}
|
|
/**
|
* Returns a copy of this duration with a positive length.
|
*
|
* This method returns a positive duration by effectively removing the sign from any negative total length.
|
* For example, {@link PT-1.3S} will be returned as {@link PT1.3S}.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @return {Duration} based on this duration with an absolute length, not null
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
abs() {
|
return this.isNegative() ? this.negated() : this;
|
}
|
|
//-------------------------------------------------------------------------
|
/**
|
* Adds this duration to the specified temporal object.
|
*
|
* This returns a temporal object of the same observable type as the input
|
* with this duration added.
|
*
|
* In most cases, it is clearer to reverse the calling pattern by using
|
* {@link Temporal#plus}.
|
* <pre>
|
* // these two lines are equivalent, but the second approach is recommended
|
* dateTime = thisDuration.addTo(dateTime);
|
* dateTime = dateTime.plus(thisDuration);
|
* </pre>
|
*
|
* The calculation will add the seconds, then nanos.
|
* Only non-zero amounts will be added.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Temporal} temporal - the temporal object to adjust, not null
|
* @return {Temporal} an object of the same type with the adjustment made, not null
|
* @throws DateTimeException if unable to add
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
addTo(temporal) {
|
requireNonNull(temporal, 'temporal');
|
if (this._seconds !== 0) {
|
temporal = temporal.plus(this._seconds, ChronoUnit.SECONDS);
|
}
|
if (this._nanos !== 0) {
|
temporal = temporal.plus(this._nanos, ChronoUnit.NANOS);
|
}
|
return temporal;
|
}
|
|
/**
|
* Subtracts this duration from the specified temporal object.
|
*
|
* This returns a temporal object of the same observable type as the input
|
* with this duration subtracted.
|
*
|
* In most cases, it is clearer to reverse the calling pattern by using
|
* {@link Temporal#minus}.
|
* <pre>
|
* // these two lines are equivalent, but the second approach is recommended
|
* dateTime = thisDuration.subtractFrom(dateTime);
|
* dateTime = dateTime.minus(thisDuration);
|
* </pre>
|
*
|
* The calculation will subtract the seconds, then nanos.
|
* Only non-zero amounts will be added.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @param {Temporal} temporal - the temporal object to adjust, not null
|
* @return {Temporal} an object of the same type with the adjustment made, not null
|
* @throws DateTimeException if unable to subtract
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
subtractFrom(temporal) {
|
requireNonNull(temporal, 'temporal');
|
if (this._seconds !== 0) {
|
temporal = temporal.minus(this._seconds, ChronoUnit.SECONDS);
|
}
|
if (this._nanos !== 0) {
|
temporal = temporal.minus(this._nanos, ChronoUnit.NANOS);
|
}
|
return temporal;
|
}
|
|
//-----------------------------------------------------------------------
|
/**
|
* Gets the number of days in this duration.
|
*
|
* This returns the total number of days in the duration by dividing the
|
* number of seconds by 86400.
|
* This is based on the standard definition of a day as 24 hours.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @return {number} the number of days in the duration, may be negative
|
*/
|
toDays() {
|
return MathUtil.intDiv(this._seconds, LocalTime.SECONDS_PER_DAY);
|
}
|
|
/**
|
* Gets the number of hours in this duration.
|
*
|
* This returns the total number of hours in the duration by dividing the
|
* number of seconds by 3600.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @return {number} the number of hours in the duration, may be negative
|
*/
|
toHours() {
|
return MathUtil.intDiv(this._seconds, LocalTime.SECONDS_PER_HOUR);
|
}
|
|
/**
|
* Gets the number of minutes in this duration.
|
*
|
* This returns the total number of minutes in the duration by dividing the
|
* number of seconds by 60.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @return {number} the number of minutes in the duration, may be negative
|
*/
|
toMinutes() {
|
return MathUtil.intDiv(this._seconds, LocalTime.SECONDS_PER_MINUTE);
|
}
|
|
/**
|
* Converts this duration to the total length in milliseconds.
|
*
|
* If this duration is too large to fit in a `long` milliseconds, then an
|
* exception is thrown.
|
*
|
* If this duration has greater than millisecond precision, then the conversion
|
* will drop any excess precision information as though the amount in nanoseconds
|
* was subject to integer division by one million.
|
*
|
* @return {number} the total length of the duration in milliseconds
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
toMillis() {
|
let millis = Math.round(MathUtil.safeMultiply(this._seconds, 1000));
|
millis = MathUtil.safeAdd(millis, MathUtil.intDiv(this._nanos, 1000000));
|
return millis;
|
}
|
|
/**
|
* Converts this duration to the total length in nanoseconds expressed as a `long`.
|
*
|
* If this duration is too large to fit in a `long` nanoseconds, then an
|
* exception is thrown.
|
*
|
* @return {number} the total length of the duration in nanoseconds
|
* @throws ArithmeticException if numeric overflow occurs
|
*/
|
toNanos() {
|
let totalNanos = MathUtil.safeMultiply(this._seconds, LocalTime.NANOS_PER_SECOND);
|
totalNanos = MathUtil.safeAdd(totalNanos, this._nanos);
|
return totalNanos;
|
}
|
|
//-----------------------------------------------------------------------
|
/**
|
* Extracts the number of hours part in the duration.
|
*
|
* This returns the number of remaining hours when dividing {@link Duration.toHours}
|
* by hours in a day.
|
* This is based on the standard definition of a day as 24 hours.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @return {number} the number of hours part in the duration, may be negative
|
*/
|
toHoursPart() {
|
return MathUtil.intMod(this.toHours(), LocalTime.HOURS_PER_DAY);
|
}
|
|
/**
|
* Extracts the number of minutes part in the duration.
|
*
|
* This returns the number of remaining minutes when dividing {@link Duration.toMinutes}
|
* by minutes in an hour.
|
* This is based on the standard definition of an hour as 60 minutes.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @return {number} the number of minutes parts in the duration, may be negative
|
*/
|
toMinutesPart() {
|
return MathUtil.intMod(this.toMinutes(), LocalTime.MINUTES_PER_HOUR);
|
}
|
|
/**
|
* Extracts the number of seconds part in the duration.
|
*
|
* This returns the remaining seconds when dividing {@link Duration.toSeconds}
|
* by seconds in a minute.
|
* This is based on the standard definition of a minute as 60 seconds.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @return {number} the number of seconds parts in the duration, may be negative
|
*/
|
toSecondsPart() {
|
return MathUtil.intMod(this._seconds, LocalTime.SECONDS_PER_MINUTE);
|
}
|
|
/**
|
* Extracts the number of milliseconds part of the duration.
|
*
|
* This returns the milliseconds part by dividing the number of nanoseconds by 1,000,000.
|
* The length of the duration is stored using two fields - seconds and nanoseconds.
|
* The nanoseconds part is a value from 0 to 999,999,999 that is an adjustment to
|
* the length in seconds.
|
* The total duration is defined by calling {@link Duration.nano} and {@link Duration.seconds}.
|
*
|
* This instance is immutable and unaffected by this method call.
|
*
|
* @return {number} the number of milliseconds part of the duration.
|
*/
|
toMillisPart() {
|
return MathUtil.intDiv(this._nanos, 1000000);
|
}
|
|
//-----------------------------------------------------------------------
|
/**
|
* Compares this duration to the specified {@link Duration}.
|
*
|
* The comparison is based on the total length of the durations.
|
*
|
* @param {Duration} otherDuration - the other duration to compare to, not null
|
* @return {number} the comparator value, negative if less, positive if greater
|
*/
|
compareTo(otherDuration) {
|
requireNonNull(otherDuration, 'otherDuration');
|
requireInstance(otherDuration, Duration, 'otherDuration');
|
const cmp = MathUtil.compareNumbers(this._seconds, otherDuration.seconds());
|
if (cmp !== 0) {
|
return cmp;
|
}
|
return this._nanos - otherDuration.nano();
|
}
|
|
//-----------------------------------------------------------------------
|
/**
|
* Checks if this duration is equal to the specified {@link Duration}.
|
*
|
* The comparison is based on the total length of the durations.
|
*
|
* @param {*} otherDuration - the other duration, null returns false
|
* @return {boolean} true if the other duration is equal to this one
|
*/
|
equals(otherDuration) {
|
if (this === otherDuration) {
|
return true;
|
}
|
if (otherDuration instanceof Duration) {
|
return this.seconds() === otherDuration.seconds() &&
|
this.nano() === otherDuration.nano();
|
}
|
return false;
|
}
|
|
//-----------------------------------------------------------------------
|
/**
|
* A string representation of this duration using ISO-8601 seconds
|
* based representation, such as {@link PT8H6M12.345S}.
|
*
|
* The format of the returned string will be {@link PTnHnMnS}, where n is
|
* the relevant hours, minutes or seconds part of the duration.
|
* Any fractional seconds are placed after a decimal point in the seconds section.
|
* If a section has a zero value, it is omitted.
|
* The hours, minutes and seconds will all have the same sign.
|
*
|
* Examples:
|
* <pre>
|
* "20.345 seconds" -> "PT20.345S
|
* "15 minutes" (15 * 60 seconds) -> "PT15M"
|
* "10 hours" (10 * 3600 seconds) -> "PT10H"
|
* "2 days" (2 * 86400 seconds) -> "PT48H"
|
* </pre>
|
* Note that multiples of 24 hours are not output as days to avoid confusion
|
* with {@link Period}.
|
*
|
* @return {string} an ISO-8601 representation of this duration, not null
|
*/
|
toString() {
|
if (this === Duration.ZERO) {
|
return 'PT0S';
|
}
|
const hours = MathUtil.intDiv(this._seconds, LocalTime.SECONDS_PER_HOUR);
|
const minutes = MathUtil.intDiv(MathUtil.intMod(this._seconds, LocalTime.SECONDS_PER_HOUR), LocalTime.SECONDS_PER_MINUTE);
|
const secs = MathUtil.intMod(this._seconds, LocalTime.SECONDS_PER_MINUTE);
|
let rval = 'PT';
|
if (hours !== 0) {
|
rval += `${hours}H`;
|
}
|
if (minutes !== 0) {
|
rval += `${minutes}M`;
|
}
|
if (secs === 0 && this._nanos === 0 && rval.length > 2) {
|
return rval;
|
}
|
if (secs < 0 && this._nanos > 0) {
|
if (secs === -1) {
|
rval += '-0';
|
} else {
|
rval += secs + 1;
|
}
|
} else {
|
rval += secs;
|
}
|
if (this._nanos > 0) {
|
rval += '.';
|
let nanoString;
|
if (secs < 0) {
|
nanoString = `${2 * LocalTime.NANOS_PER_SECOND - this._nanos}`;
|
} else {
|
nanoString = `${LocalTime.NANOS_PER_SECOND + this._nanos}`;
|
}
|
// remove the leading '1'
|
nanoString = nanoString.slice(1, nanoString.length);
|
rval += nanoString;
|
while (rval.charAt(rval.length - 1) === '0') {
|
rval = rval.slice(0, rval.length - 1);
|
}
|
}
|
rval += 'S';
|
return rval;
|
}
|
|
/**
|
*
|
* @return {string} same as {@link Duration.toString}
|
*/
|
toJSON() {
|
return this.toString();
|
}
|
|
}
|
|
export function _init() {
|
/**
|
* Constant for a duration of zero.
|
*/
|
Duration.ZERO = new Duration(0, 0);
|
}
|
