packages/extra/src/LocalDateRange.js
/**
* @copyright (c) 2016, Philipp Thürwächter & Pattrick Hüper & Michał Sobkiewicz
* @copyright (c) 2007-present, Stephen Colebourne & Michael Nascimento Santos
* @license BSD-3-Clause (see LICENSE in the root directory of this source tree)
*/
import { ArithmeticException, DateTimeException, DateTimeParseException, IllegalArgumentException, LocalDate, Period } from '@js-joda/core';
// TODO: hm... is this a good idea?? copied from joda currently, could we add a js-joda-utils module??
import { requireInstance, requireNonNull } from './assert';
/**
* The day after the MIN date.
*/
const MINP1 = LocalDate.MIN.plusDays(1);
/**
* The day before the MAX date.
*/
const MAXM1 = LocalDate.MAX.minusDays(1);
/**
* A range of local dates.
*
* A `LocalDateRange` represents a range of dates, from a start date to an end date.
* Instances can be constructed from either a half-open or a closed range of dates.
* Internally, the class stores the start and end dates, with the start inclusive and the end exclusive.
* The end date is always greater than or equal to the start date.
*
* The constants `LocalDate.MIN` and `LocalDate.MAX` can be used
* to indicate an unbounded far-past or far-future. Note that there is no difference
* between a half-open and a closed range when the end is `LocalDate.MAX`.
* Empty ranges are allowed.
*
* No range can end at `LocalDate.MIN` or `LocalDate.MIN.plusDays(1)`.
* No range can start at `LocalDate.MAX` or `LocalDate.MAX.minusDays(1)`.
* No empty range can exist at `LocalDate.MIN` or `LocalDate.MAX`.
*
* Date ranges are not comparable. To compare the length of two ranges, it is
* generally recommended to compare the number of days they contain.
*
*/
export class LocalDateRange {
/**
* function overloading for {@link LocalDateRange.of}
* - if called with `LocalDate` and `LocalDate`, {@link LocalDateRange._ofLocalDateLocalDate} is executed,
* - if called with `LocalDate` and `Period`, {@link LocalDateRange._ofLocalDatePeriod} is executed,
* - otherwise throws IllegalArgumentException.
*
* @param {LocalDate} startInclusive
* @param {LocalDate|Period} endExclusiveOrPeriod
* @return {LocalDateRange}
*/
static of(startInclusive, endExclusiveOrPeriod) {
if (startInclusive instanceof LocalDate && endExclusiveOrPeriod instanceof LocalDate) {
return LocalDateRange._ofLocalDateLocalDate(startInclusive, endExclusiveOrPeriod);
}
if (startInclusive instanceof LocalDate && endExclusiveOrPeriod instanceof Period) {
return LocalDateRange._ofLocalDatePeriod(startInclusive, endExclusiveOrPeriod);
}
const messageParts = [];
if (!(startInclusive instanceof LocalDate)) {
messageParts.push(`startInclusive must be an instance of LocalDate but is ${startInclusive.constructor.name}`);
}
if (!(endExclusiveOrPeriod instanceof LocalDate || endExclusiveOrPeriod instanceof Period)) {
messageParts.push(`endExclusiveOrPeriod must be an instance of LocalDate or Period but is ${endExclusiveOrPeriod.constructor.name}`);
}
throw new IllegalArgumentException(messageParts.join(' and '));
}
//-----------------------------------------------------------------------
/**
* Obtains a half-open range of dates, including the start and excluding the end.
*
* The range includes the start date and excludes the end date, unless the end is `LocalDate.MAX`.
* The end date must be equal to or after the start date.
* This definition permits an empty range located at a specific date.
*
* The constants `LocalDate.MIN` and `LocalDate.MAX` can be used
* to indicate an unbounded far-past or far-future.
*
* The start inclusive date must not be `LocalDate.MAX` or `LocalDate.MAX.minusDays(1)`.
* The end inclusive date must not be `LocalDate.MIN` or `LocalDate.MIN.plusDays(1)`.
* No empty range can exist at `LocalDate.MIN` or `LocalDate.MAX`.
*
* @param {LocalDate} startInclusive - the inclusive start date, not null
* @param {LocalDate} endExclusive - the exclusive end date, not null
* @return {LocalDateRange} the half-open range, not null
* @throws {DateTimeException} if the end is before the start,
* or the start date is `LocalDate.MAX` or `LocalDate.MAX.minusDays(1)`,
* or the end date is `LocalDate.MIN` or `LocalDate.MIN.plusDays(1)`
* @protected
*/
static _ofLocalDateLocalDate(startInclusive, endExclusive) {
requireNonNull(startInclusive, 'startInclusive');
requireNonNull(endExclusive, 'endExclusive');
requireInstance(startInclusive, LocalDate, 'startInclusive');
requireInstance(endExclusive, LocalDate, 'endExclusive');
return new LocalDateRange(startInclusive, endExclusive);
}
/**
* Obtains an instance of `LocalDateRange` from the start and a period.
*
* The end date is calculated as the start plus the duration.
* The period must not be negative.
*
* The constant `LocalDate.MIN` can be used to indicate an unbounded far-past.
*
* The period must not be zero or one day when the start date is `LocalDate.MIN`.
*
* @param {LocalDate} startInclusive - the inclusive start date, not null
* @param {Period} period - the period from the start to the end, not null
* @return {LocalDateRange} the range, not null
* @throws {DateTimeException} if the end is before the start,
* or if the period addition cannot be made
* @throws {ArithmeticException} if numeric overflow occurs when adding the period
* @protected
*/
static _ofLocalDatePeriod(startInclusive, period) {
requireNonNull(startInclusive, 'startInclusive');
requireNonNull(period, 'period');
requireInstance(startInclusive, LocalDate, 'startInclusive');
requireInstance(period, Period, 'period');
if (period.isNegative()) {
throw new DateTimeException('Period must not be zero or negative');
}
return new LocalDateRange(startInclusive, startInclusive.plus(period));
}
/**
* Obtains a closed range of dates, including the start and end.
*
* The range includes the start date and the end date.
* The end date must be equal to or after the start date.
*
* The constants `LocalDate.MIN` and `LocalDate.MAX` can be used
* to indicate an unbounded far-past or far-future. In addition, an end date of
* `LocalDate.MAX.minusDays(1)` will also create an unbounded far-future range.
*
* The start inclusive date must not be `LocalDate.MAX` or `LocalDate.MAX.minusDays(1)`.
* The end inclusive date must not be `LocalDate.MIN`.
*
* @param {LocalDate} startInclusive - the inclusive start date, not null
* @param {LocalDate} endInclusive - the inclusive end date, not null
* @return {LocalDateRange} the closed range
* @throws {DateTimeException} if the end is before the start,
* or the start date is `LocalDate.MAX` or `LocalDate.MAX.minusDays(1)`,
* or the end date is `LocalDate.MIN`
*/
static ofClosed(startInclusive, endInclusive) {
requireNonNull(startInclusive, 'startInclusive');
requireNonNull(endInclusive, 'endInclusive');
requireInstance(startInclusive, LocalDate, 'startInclusive');
requireInstance(endInclusive, LocalDate, 'endInclusive');
if (endInclusive.isBefore(startInclusive)) {
throw new DateTimeException('Start date must be on or before end date');
}
const end = (endInclusive.equals(LocalDate.MAX) ? LocalDate.MAX : endInclusive.plusDays(1));
return new LocalDateRange(startInclusive, end);
}
/**
* Obtains an empty date range located at the specified date.
*
* The empty range has zero length and contains no other dates or ranges.
* An empty range cannot be located at `LocalDate.MIN`, `LocalDate.MIN.plusDays(1)`,
* `LocalDate.MAX` or `LocalDate.MAX.minusDays(1)`.
*
* @param {LocalDate} date - the date where the empty range is located, not null
* @return {LocalDateRange} the empty range, not null
* @throws {DateTimeException} if the date is `LocalDate.MIN`, `LocalDate.MIN.plusDays(1)`,
* `LocalDate.MAX` or `LocalDate.MAX.minusDays(1)`
*/
static ofEmpty(date) {
requireNonNull(date, 'date');
requireInstance(date, LocalDate, 'date');
return new LocalDateRange(date, date);
}
/**
* Obtains a range that is unbounded at the start and end.
*
* @return {LocalDateRange} the range, with an unbounded start and unbounded end
*/
static ofUnbounded() {
return LocalDateRange.ALL;
}
/**
* Obtains a range up to, but not including, the specified end date.
*
* The range includes all dates from the unbounded start, denoted by `LocalDate.MIN`, to the end date.
* The end date is exclusive and cannot be `LocalDate.MIN` or `LocalDate.MIN.plusDays(1)`.
*
* @param {LocalDate} endExclusive - the exclusive end date, `LocalDate.MAX` treated as unbounded, not null
* @return {LocalDateRange} the range, with an unbounded start
* @throws {DateTimeException} if the end date is `LocalDate.MIN` or `LocalDate.MIN.plusDays(1)`
*/
static ofUnboundedStart(endExclusive) {
requireNonNull(endExclusive, 'endExclusive');
requireInstance(endExclusive, LocalDate, 'endExclusive');
return LocalDateRange.of(LocalDate.MIN, endExclusive);
}
/**
* Obtains a range from and including the specified start date.
*
* The range includes all dates from the start date to the unbounded end, denoted by `LocalDate.MAX`.
* The start date is inclusive and cannot be `LocalDate.MAX` or `LocalDate.MAX.minusDays(1)`.
*
* @param {LocalDate} startInclusive - the inclusive start date, `LocalDate.MIN` treated as unbounded, not null
* @return {LocalDateRange} the range, with an unbounded end
* @throws {DateTimeException} if the start date is `LocalDate.MAX` or `LocalDate.MAX.minusDays(1)`
*/
static ofUnboundedEnd(startInclusive) {
return LocalDateRange.of(startInclusive, LocalDate.MAX);
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of `LocalDateRange` from a text string such as
* `2007-12-03/2007-12-04`, where the end date is exclusive.
*
* The string must consist of one of the following three formats:
* <ul>
* <li>a representations of an {@link LocalDate}, followed by a forward slash,
* followed by a representation of a {@link LocalDate}
* <li>a representation of an {@link LocalDate}, followed by a forward slash,
* followed by a representation of a {@link Period}
* <li>a representation of a {@link Period}, followed by a forward slash,
* followed by a representation of an {@link LocalDate}
* </ul>
*
* @param {string} text - the text to parse, not null
* @return {LocalDateRange} the parsed range, not null
* @throws {DateTimeParseException} if the text cannot be parsed
*/
static parse(text) {
requireNonNull(text, 'text');
for (let i = 0; i < text.length; i++) {
if (text[i] === '/') {
const firstChar = text.charAt(0);
if (firstChar === 'P' || firstChar === 'p') {
// period followed by date
const duration = Period.parse(text.slice(0, i));
const end = LocalDate.parse(text.slice(i + 1, text.length));
return LocalDateRange.of(end.minus(duration), end);
} else {
// date followed by date or period
const start = LocalDate.parse(text.slice(0, i));
if (i + 1 < text.length) {
const c = text[i + 1];
if (c === 'P' || c === 'p') {
const duration = Period.parse(text.slice(i + 1, text.length));
return LocalDateRange.of(start, start.plus(duration));
}
}
const end = LocalDate.parse(text.slice(i + 1, text.length));
return LocalDateRange.of(start, end);
}
}
}
throw new DateTimeParseException('LocalDateRange cannot be parsed, no forward slash found', text, 0);
}
//-----------------------------------------------------------------------
/**
* Constructor.
*
* @param {LocalDate} startInclusive - the start date, inclusive, validated not null
* @param {LocalDate} endExclusive - the end date, exclusive, validated not null
* @private
*/
constructor(startInclusive, endExclusive) {
requireNonNull(startInclusive, 'startInclusive');
requireNonNull(endExclusive, 'endExclusive');
requireInstance(startInclusive, LocalDate, 'startInclusive');
requireInstance(endExclusive, LocalDate, 'endExclusive');
if (endExclusive.isBefore(startInclusive)) {
throw new DateTimeException('End date must be on or after start date');
}
if (startInclusive.equals(MAXM1)) {
throw new DateTimeException('Range must not start at LocalDate.MAX.minusDays(1)');
}
if (endExclusive.equals(MINP1)) {
throw new DateTimeException('Range must not end at LocalDate.MIN.plusDays(1)');
}
if (endExclusive.equals(LocalDate.MIN) || startInclusive.equals(LocalDate.MAX)) {
throw new DateTimeException('Empty range must not be at LocalDate.MIN or LocalDate.MAX');
}
this._start = startInclusive;
this._end = endExclusive;
}
//-----------------------------------------------------------------------
/**
* Gets the start date of this range, inclusive.
*
* This will return `LocalDate#MIN` if the range is unbounded at the start.
* In this case, the range includes all dates into the far-past.
*
* This never returns `LocalDate.MAX` or `LocalDate.MAX.minusDays(1)`.
*
* @return {LocalDate} the start date
*/
start() {
return this._start;
}
/**
* Gets the end date of this range, exclusive.
*
* This will return `LocalDate.MAX` if the range is unbounded at the end.
* In this case, the range includes all dates into the far-future.
*
* This never returns `LocalDate.MIN` or `LocalDate.MIN.plusDays(1)`.
*
* @return {LocalDate} the end date, exclusive
*/
end() {
return this._end;
}
/**
* Gets the end date of this range, inclusive.
*
* This will return `LocalDate.MAX` if the range is unbounded at the end.
* In this case, the range includes all dates into the far-future.
*
* This returns the date before the end date.
*
* This never returns `LocalDate.MIN`.
*
* @return {LocalDate} the end date, inclusive
*/
endInclusive() {
if (this.isUnboundedEnd()) {
return LocalDate.MAX;
}
return this._end.minusDays(1);
}
//-----------------------------------------------------------------------
/**
* Checks if the range is empty.
*
* An empty range occurs when the start date equals the end date.
*
* An empty range is never unbounded.
*
* @return {boolean} true if the range is empty
*/
isEmpty() {
return this._start.equals(this._end);
}
/**
* Checks if the start of the range is unbounded.
*
* An unbounded range is never empty.
*
* @return {boolean} true if start is unbounded
*/
isUnboundedStart() {
return this._start.equals(LocalDate.MIN);
}
/**
* Checks if the end of the range is unbounded.
*
* An unbounded range is never empty.
*
* @return {boolean} true if end is unbounded
*/
isUnboundedEnd() {
return this._end.equals(LocalDate.MAX);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this range with the start date adjusted.
*
* This returns a new instance with the start date altered.
* Since `LocalDate` implements `TemporalAdjuster` any
* local date can simply be passed in.
*
* For example, to adjust the start to one week earlier:
* <pre>
* range = range.withStart(date -> date.minus(1, ChronoUnit.WEEKS));
* </pre>
*
* @param {TemporalAdjuster} adjuster - the adjuster to use, not null
* @return {LocalDateRange} a copy of this range with the start date adjusted
* @throws {DateTimeException} if the new start date is after the current end date
*/
withStart(adjuster) {
return LocalDateRange.of(this._start.with(adjuster), this._end);
}
/**
* Returns a copy of this range with the end date adjusted.
*
* This returns a new instance with the exclusive end date altered.
* Since `LocalDate` implements `TemporalAdjuster` any
* local date can simply be passed in.
*
* For example, to adjust the end to one week later:
* <pre>
* range = range.withEnd(date -> date.plus(1, ChronoUnit.WEEKS));
* </pre>
*
* @param {TemporalAdjuster} adjuster - the adjuster to use, not null
* @return {LocalDateRange} a copy of this range with the end date adjusted
* @throws {DateTimeException} if the new end date is before the current start date
*/
withEnd(adjuster) {
return LocalDateRange.of(this._start, this._end.with(adjuster));
}
//-----------------------------------------------------------------------
/**
* Checks if this range contains the specified date.
*
* This checks if the specified date is within the bounds of this range.
* If this range is empty then this method always returns false.
* Else if this range has an unbounded start then `contains(LocalDate#MIN)` returns true.
* Else if this range has an unbounded end then `contains(LocalDate#MAX)` returns true.
*
* @param {LocalDate} date - the date to check for, not null
* @return {boolean} true if this range contains the date
*/
contains(date) {
requireNonNull(date, 'date');
return this._start.compareTo(date) <= 0 && (date.compareTo(this._end) < 0 || this.isUnboundedEnd());
}
/**
* Checks if this range encloses the specified range.
*
* This checks if the bounds of the specified range are within the bounds of this range.
* An empty range encloses itself.
*
* @param {LocalDateRange} other - the other range to check for, not null
* @return {boolean} true if this range contains all dates in the other range
*/
encloses(other) {
requireNonNull(other, 'other');
return this._start.compareTo(other._start) <= 0 && other._end.compareTo(this._end) <= 0;
}
/**
* Checks if this range abuts the specified range.
*
* The result is true if the end of this range is the start of the other, or vice versa.
* An empty range does not abut itself.
*
* @param {LocalDateRange} other - the other range, not null
* @return {boolean} true if this range abuts the other range
*/
abuts(other) {
requireNonNull(other, 'other');
return this._end.equals(other._start) !== this._start.equals(other._end);
}
/**
* Checks if this range is connected to the specified range.
*
* The result is true if the two ranges have an enclosed range in common, even if that range is empty.
* An empty range is connected to itself.
*
* This is equivalent to `(overlaps(other) || abuts(other))`.
*
* @param {LocalDateRange} other - the other range, not null
* @return {boolean} true if this range is connected to the other range
*/
isConnected(other) {
requireNonNull(other, 'other');
return this.equals(other) || (this._start.compareTo(other._end) <= 0 && other._start.compareTo(this._end) <= 0);
}
/**
* Checks if this range overlaps the specified range.
*
* The result is true if the two ranges share some part of the time-line.
* An empty range overlaps itself.
*
* This is equivalent to `(isConnected(other) && !abuts(other))`.
*
* @param {LocalDateRange} other - the time range to compare to, null means a zero length range now
* @return {boolean} true if the time ranges overlap
*/
overlaps(other) {
requireNonNull(other, 'other');
return other.equals(this) || (this._start.compareTo(other._end) < 0 && other._start.compareTo(this._end) < 0);
}
//-----------------------------------------------------------------------
/**
* Calculates the range that is the intersection of this range and the specified range.
*
* This finds the intersection of two ranges.
* This throws an exception if the two ranges are not {@linkplain #isConnected(LocalDateRange) connected}.
*
* @param {LocalDateRange} other - the other range to check for, not null
* @return {LocalDateRange} the range that is the intersection of the two ranges
* @throws {DateTimeException} if the ranges do not connect
*/
intersection(other) {
requireNonNull(other, 'other');
if (this.isConnected(other) === false) {
throw new DateTimeException(`Ranges do not connect: ${this} and ${other}`);
}
const cmpStart = this._start.compareTo(other._start);
const cmpEnd = this._end.compareTo(other._end);
if (cmpStart >= 0 && cmpEnd <= 0) {
return this;
} else if (cmpStart <= 0 && cmpEnd >= 0) {
return other;
} else {
const newStart = (cmpStart >= 0 ? this._start : other._start);
const newEnd = (cmpEnd <= 0 ? this._end : other._end);
return LocalDateRange.of(newStart, newEnd);
}
}
/**
* Calculates the range that is the union of this range and the specified range.
*
* This finds the union of two ranges.
* This throws an exception if the two ranges are not {@linkplain #isConnected(LocalDateRange) connected}.
*
* @param {LocalDateRange} other - the other range to check for, not null
* @return {LocalDateRange} the range that is the union of the two ranges
* @throws {DateTimeException} if the ranges do not connect
*/
union(other) {
requireNonNull(other, 'other');
if (this.isConnected(other) === false) {
throw new DateTimeException(`Ranges do not connect: ${this} and ${other}`);
}
const cmpStart = this._start.compareTo(other._start);
const cmpEnd = this._end.compareTo(other._end);
if (cmpStart >= 0 && cmpEnd <= 0) {
return other;
} else if (cmpStart <= 0 && cmpEnd >= 0) {
return this;
} else {
const newStart = (cmpStart >= 0 ? other._start : this._start);
const newEnd = (cmpEnd <= 0 ? other._end : this._end);
return LocalDateRange.of(newStart, newEnd);
}
}
/**
* Calculates the smallest range that encloses this range and the specified range.
*
* The result of this method will {@linkplain #encloses(LocalDateRange) enclose}
* this range and the specified range.
*
* @param {LocalDateRange} other - the other range to check for, not null
* @return {LocalDateRange} the range that spans the two ranges
*/
span(other) {
requireNonNull(other, 'other');
const cmpStart = this._start.compareTo(other._start);
const cmpEnd = this._end.compareTo(other._end);
const newStart = (cmpStart >= 0 ? other._start : this._start);
const newEnd = (cmpEnd <= 0 ? other._end : this._end);
return LocalDateRange.of(newStart, newEnd);
}
/**
* Function overloading for {@link LocalDateRange.isAfter}
* - if called with `LocalDate`, {@link LocalDateRange._isAfterLocalDate} is executed,
* - if called with `LocalDateRange`, {@link LocalDateRange._isAfterLocalDateRange} is executed,
* - otherwise throws IllegalArgumentException.
*
* @param {LocalDate|LocalDateRange} localDateOrLocalDateRange
* @return {boolean}
*/
isAfter(localDateOrLocalDateRange) {
if (localDateOrLocalDateRange instanceof LocalDate) {
return this._isAfterLocalDate(localDateOrLocalDateRange);
}
if (localDateOrLocalDateRange instanceof LocalDateRange) {
return this._isAfterLocalDateRange(localDateOrLocalDateRange);
}
throw new IllegalArgumentException(`localDateOrLocalDateRange must be an instance of LocalDate or LocalDateRange but is ${localDateOrLocalDateRange.constructor.name}`);
}
/**
* Function overloading for {@link LocalDateRange.isBefore}
* - if called with `LocalDate`, {@link LocalDateRange._isBeforeLocalDate} is executed,
* - if called with `LocalDateRange`, {@link LocalDateRange._isBeforeLocalDateRange} is executed,
* - otherwise throws IllegalArgumentException.
*
* @param {LocalDate|LocalDateRange} localDateOrLocalDateRange
* @return {boolean}
*/
isBefore(localDateOrLocalDateRange) {
if (localDateOrLocalDateRange instanceof LocalDate) {
return this._isBeforeLocalDate(localDateOrLocalDateRange);
}
if (localDateOrLocalDateRange instanceof LocalDateRange) {
return this._isBeforeLocalDateRange(localDateOrLocalDateRange);
}
throw new IllegalArgumentException(`localDateOrLocalDateRange must be an instance of LocalDate or LocalDateRange but is ${localDateOrLocalDateRange.constructor.name}`);
}
//-----------------------------------------------------------------------
/**
* Checks if this range is after the specified date.
*
* The result is true if every date in this range is after the specified date.
* An empty range behaves as though it is a date for comparison purposes.
*
* @param {LocalDate} date - the other date to compare to, not null
* @return {boolean} true if the start of this range is after the specified date
* @protected
*/
_isAfterLocalDate(date) {
return this._start.compareTo(date) > 0;
}
/**
* Checks if this range is before the specified date.
*
* The result is true if every date in this range is before the specified date.
* An empty range behaves as though it is a date for comparison purposes.
*
* @param {LocalDate} date - the other date to compare to, not null
* @return {boolean} true if the start of this range is before the specified date
* @protected
*/
_isBeforeLocalDate(date) {
return this._end.compareTo(date) <= 0 && this._start.compareTo(date) < 0;
}
//-----------------------------------------------------------------------
/**
* Checks if this range is after the specified range.
*
* The result is true if every date in this range is after every date in the specified range.
* An empty range behaves as though it is a date for comparison purposes.
*
* @param {LocalDateRange} other - the other range to compare to, not null
* @return {boolean} true if every date in this range is after every date in the other range
* @protected
*/
_isAfterLocalDateRange(other) {
return this._start.compareTo(other._end) >= 0 && !other.equals(this);
}
/**
* Checks if this range is before the specified range.
*
* The result is true if every date in this range is before every date in the specified range.
* An empty range behaves as though it is a date for comparison purposes.
*
* @param {LocalDateRange} range - the other range to compare to, not null
* @return {boolean} true if every date in this range is before every date in the other range
* @protected
*/
_isBeforeLocalDateRange(range) {
return this._end.compareTo(range._start) <= 0 && !range.equals(this);
}
//-----------------------------------------------------------------------
/**
* Obtains the length of this range in days.
*
* This returns the number of days between the start and end dates.
* Unbounded ranges return `Number.POSITIVE_INFINITY`.
*
* @return {number} the length in days, `Number.POSITIVE_INFINITY` if unbounded
*/
lengthInDays() {
if (this.isUnboundedStart() || this.isUnboundedEnd()) {
return Number.POSITIVE_INFINITY;
}
return this._end.toEpochDay() - this._start.toEpochDay();
}
/**
* Obtains the length of this range as a period.
*
* This returns the {@link Period} between the start and end dates.
* Unbounded ranges throw {@link ArithmeticException}.
*
* @return {Period} the period of the range
* @throws {ArithmeticException} if the calculation exceeds the capacity of `Period`,
* or the range is unbounded
*/
toPeriod() {
if (this.isUnboundedStart() || this.isUnboundedEnd()) {
throw new ArithmeticException('Unbounded range cannot be converted to a Period');
}
return Period.between(this._start, this._end);
}
//-----------------------------------------------------------------------
/**
* Checks if this range is equal to another range.
*
* Compares this `LocalDateRange` with another ensuring that the two dates are the same.
* Only objects of type `LocalDateRange` are compared, other types return false.
*
* @param {*} obj - the object to check, null returns false
* @return {boolean} true if this is equal to the other range
*/
equals(obj) {
if (this === obj) {
return true;
}
if (obj instanceof LocalDateRange) {
const other = obj;
return this._start.equals(other._start) && this._end.equals(other._end);
}
return false;
}
/**
* A hash code for this range.
*
* @return {number} a suitable hash code
*/
hashCode() {
return this._start.hashCode() ^ this._end.hashCode();
}
//-----------------------------------------------------------------------
/**
* Outputs this range as a `String`, such as `2007-12-03/2007-12-04`.
*
* The output will be the ISO-8601 format formed by combining the
* `toString()` methods of the two dates, separated by a forward slash.
*
* @return {string} a string representation of this date, not null
*/
toString() {
return `${this._start.toString()}/${this._end.toString()}`;
}
}
export function _init() {
/**
* A range over the whole time-line.
*/
LocalDateRange.ALL = new LocalDateRange(LocalDate.MIN, LocalDate.MAX);
}
