src/Duration.js
/**
* @copyright (c) 2016, Philipp Thuerwaechter & Pattrick Hueper
* @copyright (c) 2007-present, Stephen Colebourne & Michael Nascimento Santos
* @license BSD-3-Clause (see LICENSE in the root directory of this source tree)
*/
import {requireNonNull, requireInstance} from './assert';
import {ArithmeticException, DateTimeParseException, UnsupportedTemporalTypeException} from './errors';
import {MathUtil, MAX_SAFE_INTEGER, MIN_SAFE_INTEGER} from './MathUtil';
import {ChronoField} from './temporal/ChronoField';
import {ChronoUnit} from './temporal/ChronoUnit';
import {TemporalAmount} from './temporal/TemporalAmount';
import {LocalTime} from './LocalTime';
/**
* A time-based amount of time, such as '34.5 seconds'.
* <p>
* This class models a quantity or amount of time in terms of seconds and nanoseconds.
* It can be accessed using other duration-based units, such as minutes and hours.
* In addition, the {@link ChronoUnit#DAYS DAYS} unit can be used and is treated as
* exactly equal to 24 hours, thus ignoring daylight savings effects.
* See {@link Period} for the date-based equivalent to this class.
* <p>
* A physical duration could be of infinite length.
* For practicality, the duration is stored with constraints similar to {@link Instant}.
* The duration uses nanosecond resolution with a maximum value of the seconds that can
* be held in a {@code long}. This is greater than the current estimated age of the universe.
* <p>
* The range of a duration requires the storage of a number larger than a {@code long}.
* To achieve this, the class stores a {@code long} representing seconds and an {@code int}
* representing nanosecond-of-second, which will always be between 0 and 999,999,999.
* <p>
* The duration is measured in "seconds", but these are not necessarily identical to
* the scientific "SI second" definition based on atomic clocks.
* This difference only impacts durations measured near a leap-second and should not affect
* most applications.
* See {@link Instant} for a discussion as to the meaning of the second and time-scales.
*
* <h3>Static properties of Class {@link Duration}</h3>
*
* Duration.ZERO
*
* Constant for a duration of zero.
*
*/
export class Duration extends TemporalAmount
/*implements TemporalAmount, Comparable<Duration>, Serializable */ {
/**
* Constructs an instance of {@link Duration} using seconds and nanoseconds.
*
* @param {Number} seconds - the length of the duration in seconds, positive or negative
* @param {Number} nanos - the nanoseconds within the second, from 0 to 999,999,999
* @private
*/
//TODO: private ?
constructor(seconds, nanos) {
super();
this._seconds = seconds;
this._nanos = nanos;
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of {@link Duration} from a number of standard 24 hour days.
* <p>
* The seconds are calculated based on the standard definition of a day,
* where each day is 86400 seconds which implies a 24 hour day.
* The nanosecond in second field is set to zero.
*
* @param {Number} days - the number of days, positive or negative
* @return {!Duration}
* @throws ArithmeticException if the input days exceeds the capacity of {@link Duration}
*/
static ofDays(days) {
return Duration.create(MathUtil.safeMultiply(days, LocalTime.SECONDS_PER_DAY), 0);
}
/**
* Obtains an instance of {@link Duration} from a number of standard hours.
* <p>
* The seconds are calculated based on the standard definition of an hour,
* where each hour is 3600 seconds.
* The nanosecond in second field is set to zero.
*
* @param {Number} hours - the number of hours, positive or negative
* @return {!Duration}
* @throws ArithmeticException if the input hours exceeds the capacity of {@link Duration}
*/
static ofHours(hours) {
return Duration.create(MathUtil.safeMultiply(hours, LocalTime.SECONDS_PER_HOUR), 0);
}
/**
* Obtains an instance of {@link Duration} from a number of standard minutes.
* <p>
* The seconds are calculated based on the standard definition of a minute,
* where each minute is 60 seconds.
* The nanosecond in second field is set to zero.
*
* @param {Number} minutes - the number of minutes, positive or negative
* @return {!Duration}
* @throws ArithmeticException if the input minutes exceeds the capacity of {@link Duration}
*/
static ofMinutes(minutes) {
return Duration.create(MathUtil.safeMultiply(minutes, LocalTime.SECONDS_PER_MINUTE), 0);
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of {@link Duration} from a number of seconds
* and an adjustment in nanoseconds.
* <p>
* This method allows an arbitrary number of nanoseconds to be passed in.
* The factory will alter the values of the second and nanosecond in order
* to ensure that the stored nanosecond is in the range 0 to 999,999,999.
* For example, the following will result in the exactly the same duration:
* <pre>
* Duration.ofSeconds(3, 1);
* Duration.ofSeconds(4, -999_999_999);
* Duration.ofSeconds(2, 1000_000_001);
* </pre>
*
* @param {Number} seconds - the number of seconds, positive or negative
* @param {Number} nanoAdjustment the nanosecond adjustment to the number of seconds, positive or negative
* @return {!Duration}
* @throws ArithmeticException if the adjustment causes the seconds to exceed the capacity of {@link Duration}
*/
static ofSeconds(seconds, nanoAdjustment = 0) {
var secs = MathUtil.safeAdd(seconds, MathUtil.floorDiv(nanoAdjustment, LocalTime.NANOS_PER_SECOND));
var nos = MathUtil.floorMod(nanoAdjustment, LocalTime.NANOS_PER_SECOND);
return Duration.create(secs, nos);
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of {@link Duration} from a number of milliseconds.
* <p>
* The seconds and nanoseconds are extracted from the specified milliseconds.
*
* @param {Number} millis - the number of milliseconds, positive or negative
* @return {!Duration}
*/
static ofMillis(millis) {
var secs = MathUtil.intDiv(millis, 1000);
var mos = MathUtil.intMod(millis, 1000);
if (mos < 0) {
mos += 1000;
secs--;
}
return Duration.create(secs, mos * 1000000);
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of {@link Duration} from a number of nanoseconds.
* <p>
* The seconds and nanoseconds are extracted from the specified nanoseconds.
*
* @param {Number} nanos - the number of nanoseconds, positive or negative
* @return {!Duration}
*/
static ofNanos(nanos) {
var secs = MathUtil.intDiv(nanos, LocalTime.NANOS_PER_SECOND);
var nos = MathUtil.intMod(nanos, LocalTime.NANOS_PER_SECOND);
if (nos < 0) {
nos += LocalTime.NANOS_PER_SECOND;
secs--;
}
return this.create(secs, nos);
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of {@link Duration} from a duration in the specified unit.
* <p>
* The parameters represent the two parts of a phrase like '6 Hours'. For example:
* <pre>
* Duration.of(3, SECONDS);
* Duration.of(465, HOURS);
* </pre>
* Only a subset of units are accepted by this method.
* The unit must either have an {@link TemporalUnit#isDurationEstimated() exact duration} or
* be {@link ChronoUnit#DAYS} which is treated as 24 hours. Other units throw an exception.
*
* @param {Number} amount - the amount of the duration, measured in terms of the unit, positive or negative
* @param {TemporalUnit} unit - the unit that the duration is measured in, must have an exact duration, not null
* @return {!Duration}
* @throws DateTimeException if the period unit has an estimated duration
* @throws ArithmeticException if a numeric overflow occurs
*/
static of(amount, unit) {
return Duration.ZERO.plus(amount, unit);
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of {@link Duration} from an amount.
* <p>
* This obtains a duration based on the specified amount.
* A TemporalAmount represents an amount of time, which may be date-based
* or time-based, which this factory extracts to a duration.
* <p>
* The conversion loops around the set of units from the amount and uses
* the duration of the unit to calculate the total Duration.
* Only a subset of units are accepted by this method.
* The unit must either have an exact duration or be ChronoUnit.DAYS which
* is treated as 24 hours. If any other units are found then an exception is thrown.
*
* @param {Number} amount - the temporal amount to convert, not null
* @return {Duration} the resulting duration, not null
* @throws DateTimeException if the amount cannot be converted
* @throws ArithmeticException if a numeric overflow occurs
*/
static from(amount) {
requireNonNull(amount, 'amount');
var duration = Duration.ZERO;
amount.units().forEach((unit) => {
duration = duration.plus(amount.get(unit), unit);
});
return duration;
}
/**
* Obtains an instance of {@link Duration} representing the duration between two instants.
* <p>
* Obtains a {@link Duration} representing the duration between two instants.
* This calculates the duration between two temporal objects of the same type.
* The difference in seconds is calculated using {@link Temporal#until(Temporal, TemporalUnit)}.
* The difference in nanoseconds is calculated using by querying the
* {@link ChronoField#NANO_OF_SECOND NANO_OF_SECOND} field.
* <p>
* The result of this method can be a negative period if the end is before the start.
* To guarantee to obtain a positive duration call abs() on the result.
*
* @param {Temporal} startInclusive - the start instant, inclusive, not null
* @param {Temporal} endExclusive - the end instant, exclusive, not null
* @return {!Duration}
* @throws DateTimeException if the seconds between the temporals cannot be obtained
* @throws ArithmeticException if the calculation exceeds the capacity of {@link Duration}
*/
static between(startInclusive, endExclusive) {
requireNonNull(startInclusive, 'startInclusive');
requireNonNull(endExclusive, 'endExclusive');
var secs = startInclusive.until(endExclusive, ChronoUnit.SECONDS);
var nanos = 0;
if (startInclusive.isSupported(ChronoField.NANO_OF_SECOND) && endExclusive.isSupported(ChronoField.NANO_OF_SECOND)) {
try {
let startNos = startInclusive.getLong(ChronoField.NANO_OF_SECOND);
nanos = endExclusive.getLong(ChronoField.NANO_OF_SECOND) - startNos;
if (secs > 0 && nanos < 0) {
nanos += LocalTime.NANOS_PER_SECOND;
} else if (secs < 0 && nanos > 0) {
nanos -= LocalTime.NANOS_PER_SECOND;
} else if (secs === 0 && nanos !== 0) {
// two possible meanings for result, so recalculate secs
let adjustedEnd = endExclusive.with(ChronoField.NANO_OF_SECOND, startNos);
secs = startInclusive.until(adjustedEnd, ChronoUnit.SECONDS);
}
} catch (e) {
// ignore and only use seconds
}
}
return this.ofSeconds(secs, nanos);
}
//-----------------------------------------------------------------------
/**
* Obtains a {@link Duration} from a text string such as {@code PnDTnHnMn.nS}.
* <p>
* This will parse a textual representation of a duration, including the
* string produced by {@code toString()}. The formats accepted are based
* on the ISO-8601 duration format {@code PnDTnHnMn.nS} with days
* considered to be exactly 24 hours.
* <p>
* The string starts with an optional sign, denoted by the ASCII negative
* or positive symbol. If negative, the whole period is negated.
* The ASCII letter "P" is next in upper or lower case.
* There are then four sections, each consisting of a number and a suffix.
* The sections have suffixes in ASCII of "D", "H", "M" and "S" for
* days, hours, minutes and seconds, accepted in upper or lower case.
* The suffixes must occur in order. The ASCII letter "T" must occur before
* the first occurrence, if any, of an hour, minute or second section.
* At least one of the four sections must be present, and if "T" is present
* there must be at least one section after the "T".
* The number part of each section must consist of one or more ASCII digits.
* The number may be prefixed by the ASCII negative or positive symbol.
* The number of days, hours and minutes must parse to a {@code long}.
* The number of seconds must parse to a {@code long} with optional fraction.
* The decimal point may be either a dot or a comma.
* The fractional part may have from zero to 9 digits.
* <p>
* The leading plus/minus sign, and negative values for other units are
* not part of the ISO-8601 standard.
* <p>
* Examples:
* <pre>
* "PT20.345S" -> parses as "20.345 seconds"
* "PT15M" -> parses as "15 minutes" (where a minute is 60 seconds)
* "PT10H" -> parses as "10 hours" (where an hour is 3600 seconds)
* "P2D" -> parses as "2 days" (where a day is 24 hours or 86400 seconds)
* "P2DT3H4M" -> parses as "2 days, 3 hours and 4 minutes"
* "P-6H3M" -> parses as "-6 hours and +3 minutes"
* "-P6H3M" -> parses as "-6 hours and -3 minutes"
* "-P-6H+3M" -> parses as "+6 hours and -3 minutes"
* </pre>
*
* @param {String} text - the text to parse, not null
* @return {Duration} the parsed duration, not null
* @throws DateTimeParseException if the text cannot be parsed to a duration
*/
static parse(text) {
requireNonNull(text, 'text');
/**
* The pattern for parsing.
*/
const PATTERN = new RegExp('([-+]?)P(?:([-+]?[0-9]+)D)?(T(?:([-+]?[0-9]+)H)?(?:([-+]?[0-9]+)M)?(?:([-+]?[0-9]+)(?:[.,]([0-9]{0,9}))?S)?)?', 'i');
var matches = PATTERN.exec(text);
if (matches !== null) {
// check for letter T but no time sections
if ('T' === matches[3] === false) {
var negate = '-' === matches[1];
var dayMatch = matches[2];
var hourMatch = matches[4];
var minuteMatch = matches[5];
var secondMatch = matches[6];
var fractionMatch = matches[7];
if (dayMatch != null || hourMatch != null || minuteMatch != null || secondMatch != null) {
var daysAsSecs = Duration._parseNumber(text, dayMatch, LocalTime.SECONDS_PER_DAY, 'days');
var hoursAsSecs = Duration._parseNumber(text, hourMatch, LocalTime.SECONDS_PER_HOUR, 'hours');
var minsAsSecs = Duration._parseNumber(text, minuteMatch, LocalTime.SECONDS_PER_MINUTE, 'minutes');
var seconds = Duration._parseNumber(text, secondMatch, 1, 'seconds');
var negativeSecs = secondMatch != null && secondMatch.charAt(0) === '-';
var nanos = Duration._parseFraction(text, fractionMatch, negativeSecs ? -1 : 1);
try {
return Duration.create(negate, daysAsSecs, hoursAsSecs, minsAsSecs, seconds, nanos);
} catch (ex) {
throw new DateTimeParseException('Text cannot be parsed to a Duration: overflow', text, 0, ex);
}
}
}
}
throw new DateTimeParseException('Text cannot be parsed to a Duration', text, 0);
}
static _parseNumber(text, parsed, multiplier, errorText) {
// regex limits to [-+]?[0-9]+
if (parsed == null) {
return 0;
}
try {
if (parsed[0] === '+') {
parsed = parsed.substring(1);
}
var val = parseFloat(parsed);
return MathUtil.safeMultiply(val, multiplier);
} catch (ex) {
throw new DateTimeParseException('Text cannot be parsed to a Duration: ' + errorText, text, 0, ex);
}
}
static _parseFraction(text, parsed, negate) {
// regex limits to [0-9]{0,9}
if (parsed == null || parsed.length === 0) {
return 0;
}
try {
parsed = (parsed + '000000000').substring(0, 9);
return parseFloat(parsed) * negate;
} catch (ex) {
throw new DateTimeParseException('Text cannot be parsed to a Duration: fraction', text, 0, ex);
}
}
//-----------------------------------------------------------------------
/**
* to handle function overriding this function accepts any number of arguments, checks their type and delegates to the appropriate function
*
* @return {Duration}
*/
static create() {
if (arguments.length === 1) {
return Duration.createSeconds(arguments[0]);
} else if (arguments.length === 2) {
return Duration.createSecondsNanos(arguments[0], arguments[1]);
} else {
return Duration.createNegateDaysHoursMinutesSecondsNanos(arguments[0], arguments[1], arguments[2], arguments[3], arguments[4], arguments[5]);
}
}
static createNegateDaysHoursMinutesSecondsNanos(negate, daysAsSecs, hoursAsSecs, minsAsSecs, secs, nanos) {
var seconds = MathUtil.safeAdd(daysAsSecs, MathUtil.safeAdd(hoursAsSecs, MathUtil.safeAdd(minsAsSecs, secs)));
if (negate) {
return Duration.ofSeconds(seconds, nanos).negated();
}
return Duration.ofSeconds(seconds, nanos);
}
/**
* Obtains an instance of {@link Duration} using seconds and nanoseconds.
*
* @param {Number} seconds - the length of the duration in seconds, positive or negative
* @param {Number} nanoAdjustment - the nanosecond adjustment within the second, from 0 to 999,999,999
*/
static createSecondsNanos(seconds = 0, nanoAdjustment = 0) {
if ((seconds | nanoAdjustment) === 0) {
return Duration.ZERO;
}
// if seconds is a float, we need to adjust the nanos from it as well
if (seconds >= 0) {
nanoAdjustment += seconds % 1 * LocalTime.NANOS_PER_SECOND;
} else {
nanoAdjustment -= seconds % 1 * LocalTime.NANOS_PER_SECOND;
}
seconds = Math.floor(seconds);
nanoAdjustment = Math.round(nanoAdjustment);
return new Duration(seconds, nanoAdjustment);
}
/**
* Creates an instance of {@link Duration} from a number of seconds.
*
* @param {Number} seconds - the number of seconds, up to scale 9, positive or negative
* @return {!Duration}
* @throws ArithmeticException if numeric overflow occurs
*/
static createSeconds(seconds) {
let nanos = Math.round(seconds * Math.pow(10, 9));
let div = MathUtil.intDiv(nanos, LocalTime.NANOS_PER_SECOND);
let rem = MathUtil.intMod(nanos, LocalTime.NANOS_PER_SECOND);
return Duration.ofSeconds(div, rem);
}
//-----------------------------------------------------------------------
/**
* Gets the value of the requested unit.
* <p>
* This returns a value for each of the two supported units,
* {@link ChronoUnit#SECONDS SECONDS} and {@link ChronoUnit#NANOS NANOS}.
* All other units throw an exception.
*
* @param {TemporalUnit} unit the {@code TemporalUnit} for which to return the value
* @return {number} the var value of the unit
* @throws DateTimeException if the unit is not supported
* @throws UnsupportedTemporalTypeException if the unit is not supported
*/
get(unit) {
if (unit === ChronoUnit.SECONDS) {
return this._seconds;
} else if (unit === ChronoUnit.NANOS) {
return this._nanos;
} else {
throw new UnsupportedTemporalTypeException('Unsupported unit: ' + unit);
}
}
units() {
return [ChronoUnit.SECONDS, ChronoUnit.NANOS];
}
//-----------------------------------------------------------------------
/**
* Checks if this duration is zero length.
* <p>
* A {@link Duration} represents a directed distance between two points on
* the time-line and can therefore be positive, zero or negative.
* This method checks whether the length is zero.
*
* @return {boolean} true if this duration has a total length equal to zero
*/
isZero() {
return (this._seconds | this._nanos) === 0;
}
/**
* Checks if this duration is negative, excluding zero.
* <p>
* A {@link Duration} represents a directed distance between two points on
* the time-line and can therefore be positive, zero or negative.
* This method checks whether the length is less than zero.
*
* @return {boolean} true if this duration has a total length less than zero
*/
isNegative() {
return this._seconds < 0;
}
//-----------------------------------------------------------------------
/**
* Gets the number of seconds in this duration.
* <p>
* 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 this method and {@link #getNano()}.
* <p>
* 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.
*
* @return {number} the whole seconds part of the length of the duration, positive or negative
*/
seconds() {
return this._seconds;
}
/**
* Gets the number of nanoseconds within the second in this duration.
* <p>
* 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 this method and {@link #getSeconds()}.
* <p>
* 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.
*
* @return {number} the nanoseconds within the second part of the length of the duration, from 0 to 999,999,999
*/
nano() {
return this._nanos;
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this duration with the specified amount of seconds.
* <p>
* This returns a duration with the specified seconds, retaining the
* nano-of-second part of this duration.
* <p>
* 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.
* <p>
* This returns a duration with the specified nano-of-second, retaining the
* seconds part of this duration.
* <p>
* 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.
* <p>
* 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) {
return this.plus(duration.seconds(), duration.nano());
}
/**
* to handle function overriding this function accepts two arguments, checks their type and delegates to the appropriate function
*
* @param {!(Duration|number)} a
* @param {ChronoUnit|number} b
* @return {Duration}
*/
plus(a, b){
if (a instanceof Duration) {
requireNonNull(a, 'duration');
return this.plusDuration(a);
}
if (b instanceof ChronoUnit) {
requireNonNull(a, 'amount');
requireNonNull(b, 'unit');
return this.plusAmountUnit(a, b);
}
requireNonNull(a, 'seconds');
requireNonNull(b, 'nanos');
return this.plusSecondsNanos(a, b);
}
/**
* Returns a copy of this duration with the specified duration added.
* <p>
* 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 {@link TemporalUnit#isDurationEstimated() exact duration} or
* be {@link ChronoUnit#DAYS} which is treated as 24 hours. Other units throw an exception.
* <p>
* 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(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);
}
var 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.
* <p>
* 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.
* <p>
* 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.
* <p>
* 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.
* <p>
* 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.
* <p>
* 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.
* <p>
* 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.
* <p>
* 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) {
if ((secondsToAdd | nanosToAdd) === 0) {
return this;
}
var 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);
var nanoAdjustment = MathUtil.safeAdd(this._nanos, nanosToAdd); // safe int+LocalTime.NANOS_PER_SECOND
return Duration.ofSeconds(epochSec, nanoAdjustment);
}
//-----------------------------------------------------------------------
/**
* to handle function overriding this function accepts two arguments, checks their type and delegates to the appropriate function
*
* @param {!(Duration|number)} a
* @param {ChronoUnit|number} b
* @return {Duration}
*/
minus(a, b) {
if (a instanceof Duration) {
requireNonNull(a, 'duration');
return this.minusDuration(a);
}
if (b instanceof ChronoUnit) {
requireNonNull(a, 'amount');
requireNonNull(b, 'unit');
return this.minusAmountUnit(a, b);
}
requireNonNull(a, 'seconds');
requireNonNull(b, 'nanos');
return this.minusSecondsNanos(a, b);
}
/**
* Returns a copy of this duration with the specified duration subtracted.
* <p>
* 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) {
var secsToSubtract = duration.seconds();
var nanosToSubtract = duration.nano();
if (secsToSubtract === MIN_SAFE_INTEGER) {
return this.plus(MAX_SAFE_INTEGER, -nanosToSubtract).plus(1, 0);
}
return this.plus(-secsToSubtract, -nanosToSubtract);
}
/**
* Returns a copy of this duration with the specified duration subtracted.
* <p>
* 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 {@link TemporalUnit#isDurationEstimated() exact duration} or
* be {@link ChronoUnit#DAYS} which is treated as 24 hours. Other units throw an exception.
* <p>
* 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) {
return (amountToSubtract === MIN_SAFE_INTEGER ? this.plusAmountUnit(MAX_SAFE_INTEGER, unit).plus(1, unit) : this.plusAmountUnit(-amountToSubtract, unit));
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this duration with the specified duration in 24 hour days subtracted.
* <p>
* 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).plusDays(1) : this.plusDays(-daysToSubtract));
}
/**
* Returns a copy of this duration with the specified duration in hours subtracted.
* <p>
* 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).plusHours(1) : this.plusHours(-hoursToSubtract));
}
/**
* Returns a copy of this duration with the specified duration in minutes subtracted.
* <p>
* The number of hours is multiplied by 60 to obtain the number of seconds to subtract.
* <p>
* 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).plusMinutes(1) : this.plusMinutes(-minutesToSubtract));
}
/**
* Returns a copy of this duration with the specified duration in seconds subtracted.
* <p>
* 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).plusSeconds(1) : this.plusSeconds(-secondsToSubtract));
}
/**
* Returns a copy of this duration with the specified duration in milliseconds subtracted.
* <p>
* 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).plusMillis(1) : this.plusMillis(-millisToSubtract));
}
/**
* Returns a copy of this duration with the specified duration in nanoseconds subtracted.
* <p>
* 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).plusNanos(1) : this.plusNanos(-nanosToSubtract));
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this duration multiplied by the scalar.
* <p>
* 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;
}
return Duration.create(MathUtil.safeMultiply(this.toSeconds(), multiplicand));
}
/**
* Returns a copy of this duration divided by the specified value.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @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;
}
return Duration.create(this.toSeconds() / divisor);
}
/**
* Converts this duration to the total length in seconds and
* fractional nanoseconds expressed as a {@code BigDecimal}.
*
* @return {number} the total length of the duration in seconds, with a scale of 9, not null
*/
toSeconds() {
var nanoFloat = MathUtil.safeMultiply(this._nanos, Math.pow(10, -9));
return MathUtil.safeAdd(this._seconds, nanoFloat);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this duration with the length negated.
* <p>
* This method swaps the sign of the total length of this duration.
* For example, {@code PT1.3S} will be returned as {@code PT-1.3S}.
* <p>
* 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.
* <p>
* This method returns a positive duration by effectively removing the sign from any negative total length.
* For example, {@code PT-1.3S} will be returned as {@code PT1.3S}.
* <p>
* 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.
* <p>
* This returns a temporal object of the same observable type as the input
* with this duration added.
* <p>
* In most cases, it is clearer to reverse the calling pattern by using
* {@link Temporal#plus(TemporalAmount)}.
* <pre>
* // these two lines are equivalent, but the second approach is recommended
* dateTime = thisDuration.addTo(dateTime);
* dateTime = dateTime.plus(thisDuration);
* </pre>
* <p>
* The calculation will add the seconds, then nanos.
* Only non-zero amounts will be added.
* <p>
* 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.
* <p>
* This returns a temporal object of the same observable type as the input
* with this duration subtracted.
* <p>
* In most cases, it is clearer to reverse the calling pattern by using
* {@link Temporal#minus(TemporalAmount)}.
* <pre>
* // these two lines are equivalent, but the second approach is recommended
* dateTime = thisDuration.subtractFrom(dateTime);
* dateTime = dateTime.minus(thisDuration);
* </pre>
* <p>
* The calculation will subtract the seconds, then nanos.
* Only non-zero amounts will be added.
* <p>
* 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.
* <p>
* 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.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @return {number} the number of days in the duration, may be negative
*/
toDays() {
return this._seconds / LocalTime.SECONDS_PER_DAY;
}
/**
* Gets the number of hours in this duration.
* <p>
* This returns the total number of hours in the duration by dividing the
* number of seconds by 3600.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @return {number} the number of hours in the duration, may be negative
*/
toHours() {
return this._seconds / LocalTime.SECONDS_PER_HOUR;
}
/**
* Gets the number of minutes in this duration.
* <p>
* This returns the total number of minutes in the duration by dividing the
* number of seconds by 60.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @return {number} the number of minutes in the duration, may be negative
*/
toMinutes() {
return this._seconds / LocalTime.SECONDS_PER_MINUTE;
}
/**
* Converts this duration to the total length in milliseconds.
* <p>
* If this duration is too large to fit in a {@code long} milliseconds, then an
* exception is thrown.
* <p>
* 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() {
var 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 {@code long}.
* <p>
* If this duration is too large to fit in a {@code long} nanoseconds, then an
* exception is thrown.
*
* @return {number} the total length of the duration in nanoseconds
* @throws ArithmeticException if numeric overflow occurs
*/
toNanos() {
var totalNanos = MathUtil.safeMultiply(this._seconds, LocalTime.NANOS_PER_SECOND);
totalNanos = MathUtil.safeAdd(totalNanos, this._nanos);
return totalNanos;
}
//-----------------------------------------------------------------------
/**
* Compares this duration to the specified {@link Duration}.
* <p>
* 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');
var 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}.
* <p>
* 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 {@code PT8H6M12.345S}.
* <p>
* The format of the returned string will be {@code PTnHnMnS}, where n is
* the relevant hours, minutes or seconds part of the duration.
* Any fractional seconds are placed after a decimal povar i the seconds section.
* If a section has a zero value, it is omitted.
* The hours, minutes and seconds will all have the same sign.
* <p>
* 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 {@code Period}.
*
* @return {string} an ISO-8601 representation of this duration, not null
*/
toString() {
if (this === Duration.ZERO) {
return 'PT0S';
}
var hours = MathUtil.intDiv(this._seconds, LocalTime.SECONDS_PER_HOUR);
var minutes = MathUtil.intDiv(MathUtil.intMod(this._seconds, LocalTime.SECONDS_PER_HOUR), LocalTime.SECONDS_PER_MINUTE);
var secs = MathUtil.intMod(this._seconds, LocalTime.SECONDS_PER_MINUTE);
var 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;
}
}
export function _init() {
/**
* Constant for a duration of zero.
*/
Duration.ZERO = new Duration(0, 0);
}
