@js-joda/extra
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additional date-time classes that complement those in js-joda
588 lines (552 loc) • 22.4 kB
JavaScript
/**
* @copyright (c) 2016, Philipp Thürwächter & Pattrick Hüper & Michał Sobkiewicz
* @copyright (c) 2007-present, Stephen Colebourne & Michael Nascimento Santos
* @license BSD-3-Clause (see LICENSE in the root directory of this source tree)
*/
// TODO: hm... is this a good idea?? copied from joda currently, could we add a js-joda-utils module??
import { requireNonNull, requireInstance } from './assert';
import { ChronoField, DateTimeException, IllegalArgumentException, IllegalStateException, IsoChronology, IsoFields, Month, TemporalAccessor, TemporalField, TemporalQueries, TemporalQuery, UnsupportedTemporalTypeException, _ as jodaInternal } from '@js-joda/core';
const MathUtil = jodaInternal.MathUtil;
/**
* A quarter-of-year, such as 'Q2'.
*
* `Quarter` is an enum representing the 4 quarters of the year -
* Q1, Q2, Q3 and Q4. These are defined as January to March, April to June,
* July to September and October to December.
*
* The `int` value follows the quarter, from 1 (Q1) to 4 (Q4).
* It is recommended that applications use the enum rather than the `int` value
* to ensure code clarity.
*
* **Do not use `ordinal()` to obtain the numeric representation of `Quarter`.
* Use `getValue()` instead.**
*
* This enum represents a common concept that is found in many calendar systems.
* As such, this enum may be used by any calendar system that has the quarter-of-year
* concept defined exactly equivalent to the ISO calendar system.
*
*/
export class Quarter extends TemporalAccessor {
/**
* replacement for enum `valueOf(name)`
*
* @param {string} name
* @return {Quarter}
*/
static valueOf(name) {
requireNonNull(name, 'name');
switch (name) {
case 'Q1':
return Quarter.Q1;
case 'Q2':
return Quarter.Q2;
case 'Q3':
return Quarter.Q3;
case 'Q4':
return Quarter.Q4;
}
throw new IllegalArgumentException(`No enum constant Quarter.${name}`);
}
/**
* replacement for enum `values()`
* @return {Quarter[]}
*/
static values() {
return QUARTERS.slice();
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of `Quarter` from an `int` value.
*
* `Quarter` is an enum representing the 4 quarters of the year.
* This factory allows the enum to be obtained from the `int` value.
* The `int` value follows the quarter, from 1 (Q1) to 4 (Q4).
*
* @param {number} quarterOfYear - the quarter-of-year to represent, from 1 (Q1) to 4 (Q4)
* @return {Quarter} the quarter-of-year, not null
* @throws {DateTimeException} if the quarter-of-year is invalid
*/
static of(quarterOfYear) {
requireNonNull(quarterOfYear, 'quarterOfYear');
switch (quarterOfYear) {
case 1:
return Quarter.Q1;
case 2:
return Quarter.Q2;
case 3:
return Quarter.Q3;
case 4:
return Quarter.Q4;
default:
throw new DateTimeException(`Invalid value for Quarter: ${quarterOfYear}`);
}
}
/**
* Obtains an instance of `Quarter` from a month-of-year.
*
* `Quarter` is an enum representing the 4 quarters of the year.
* This factory allows the enum to be obtained from the `Month` value.
*
* January to March are Q1, April to June are Q2, July to September are Q3
* and October to December are Q4.
*
* @param {number} monthOfYear - the month-of-year to convert from, from 1 to 12
* @return {Quarter} the quarter-of-year, not null
* @throws {DateTimeException} if the month-of-year is invalid
*/
static ofMonth(monthOfYear) {
requireNonNull(monthOfYear, 'monthOfYear');
ChronoField.MONTH_OF_YEAR.range().checkValidValue(monthOfYear, ChronoField.MONTH_OF_YEAR);
return Quarter.of(MathUtil.intDiv(monthOfYear - 1, 3) + 1);
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of `Quarter` from a temporal object.
*
* This obtains a quarter based on the specified temporal.
* A `TemporalAccessor` represents an arbitrary set of date and time information,
* which this factory converts to an instance of `Quarter`.
*
* The conversion extracts the {@link IsoFields.QUARTER_OF_YEAR} field.
* The extraction is only permitted if the temporal object has an ISO
* chronology, or can be converted to a `LocalDate`.
*
* This method matches the signature of the functional interface {@link TemporalQuery}
* allowing it to be used in queries via method reference, `Quarter.from`.
*
* @param {Temporal} temporal - the temporal-time object to convert, not null
* @return {Quarter} the quarter-of-year, not null
* @throws {DateTimeException} if unable to convert to a `Quarter`
*/
static from(temporal) {
if (temporal instanceof Quarter) {
return temporal;
} else if (temporal instanceof Month) {
const month = temporal;
return Quarter.of(MathUtil.intDiv(month.ordinal(), 3) + 1);
}
try {
/* TODO: only IsoChronology for now
if (IsoChronology.INSTANCE.equals(Chronology.from(temporal)) == false) {
temporal = LocalDate.from(temporal);
}
*/
const qoy = MathUtil.safeToInt(temporal.getLong(IsoFields.QUARTER_OF_YEAR));
return Quarter.of(qoy);
} catch (ex) {
throw new DateTimeException(`Unable to obtain Quarter from TemporalAccessor: '${temporal}' of type '${temporal && temporal.constructor.name}'`, ex);
}
}
/**
*
* @param {number} value
* @param {string} name
* @private
*/
constructor(value, name) {
super();
this._value = MathUtil.safeToInt(value);
this._name = name;
}
//-----------------------------------------------------------------------
/**
* Gets the quarter-of-year `int` value.
*
* The values are numbered following the ISO-8601 standard,
* from 1 (Q1) to 4 (Q4).
*
* @return {number} the quarter-of-year, from 1 (Q1) to 4 (Q4)
*/
value() {
return this._value;
}
//-----------------------------------------------------------------------
/**
* Gets the textual representation, such as 'Q1' or '4th quarter'.
*
* This returns the textual name used to identify the quarter-of-year,
* suitable for presentation to the user.
* The parameters control the style of the returned text and the locale.
*
* If no textual mapping is found then the {@link #getValue() numeric value} is returned.
*
* @param {TextStyle} style - the length of the text required, not null
* @param {Locale} locale - the locale to use, not null
* @return {string} the text value of the day-of-week, not null
*/
// eslint-disable-next-line no-unused-vars
displayName(style, locale) {
throw new IllegalArgumentException('Pattern using (localized) text not implemented yet!');
}
//-----------------------------------------------------------------------
/**
* Checks if the specified field is supported.
*
* This checks if this quarter-of-year can be queried for the specified field.
* If false, then calling the {@link #range(TemporalField) range} and
* {@link #get(TemporalField) get} methods will throw an exception.
*
* If the field is {@link IsoFields#QUARTER_OF_YEAR QUARTER_OF_YEAR} then
* this method returns true.
* All `ChronoField` instances will return false.
*
* If the field is not a `ChronoField`, then the result of this method
* is obtained by invoking `TemporalField.isSupportedBy(TemporalAccessor)`
* passing `this` as the argument.
* Whether the field is supported is determined by the field.
*
* @param {TemporalField} field - the field to check, null returns false
* @return {boolean} true if the field is supported on this quarter-of-year, false if not
*/
isSupported(field) {
if (field === IsoFields.QUARTER_OF_YEAR) {
return true;
} else if (field instanceof ChronoField) {
return false;
}
return field != null && field.isSupportedBy(this);
}
/**
* Gets the range of valid values for the specified field.
*
* The range object expresses the minimum and maximum valid values for a field.
* This quarter is used to enhance the accuracy of the returned range.
* If it is not possible to return the range, because the field is not supported
* or for some other reason, an exception is thrown.
*
* If the field is {@link IsoFields#QUARTER_OF_YEAR QUARTER_OF_YEAR} then the
* range of the quarter-of-year, from 1 to 4, will be returned.
* All `ChronoField` instances will throw an `UnsupportedTemporalTypeException`.
*
* If the field is not a `ChronoField`, then the result of this method
* is obtained by invoking `TemporalField.rangeRefinedBy(TemporalAccessor)`
* passing `this` as the argument.
* Whether the range can be obtained is determined by the field.
*
* @param {TemporalField} field - the field to query the range for, not null
* @return {ValueRange} the range of valid values for the field, not null
* @throws {DateTimeException} if the range for the field cannot be obtained
* @throws {UnsupportedTemporalTypeException} if the field is not supported
*/
range(field) {
requireNonNull(field, 'field');
if (field === IsoFields.QUARTER_OF_YEAR) {
return field.range();
} else if (field instanceof ChronoField) {
throw new UnsupportedTemporalTypeException(`Unsupported field: ${field}`);
}
return super.range(field);
}
/**
* Gets the value of the specified field from this quarter-of-year as an `int`.
*
* This queries this quarter for the value for the specified field.
* The returned value will always be within the valid range of values for the field.
* If it is not possible to return the value, because the field is not supported
* or for some other reason, an exception is thrown.
*
* If the field is {@link IsoFields.QUARTER_OF_YEAR} then the
* value of the quarter-of-year, from 1 to 4, will be returned.
* All `ChronoField` instances will throw an `UnsupportedTemporalTypeException`.
*
* If the field is not a `ChronoField`, then the result of this method
* is obtained by invoking `TemporalField.getFrom(TemporalAccessor)`
* passing `this` as the argument. Whether the value can be obtained,
* and what the value represents, is determined by the field.
*
* @param {TemporalField} field - the field to get, not null
* @return {number} the value for the field, within the valid range of values
* @throws {DateTimeException} if a value for the field cannot be obtained or
* the value is outside the range of valid values for the field
* @throws {UnsupportedTemporalTypeException} if the field is not supported or
* the range of values exceeds an `int`
* @throws {ArithmeticException} if numeric overflow occurs
*/
get(field) {
requireNonNull(field, 'field');
requireInstance(field, TemporalField, 'field');
return this.range(field).checkValidIntValue(this.getLong(field), field);
}
/**
* Gets the value of the specified field from this quarter-of-year as a `long`.
*
* This queries this quarter for the value for the specified field.
* If it is not possible to return the value, because the field is not supported
* or for some other reason, an exception is thrown.
*
* If the field is {@link IsoFields#QUARTER_OF_YEAR QUARTER_OF_YEAR} then the
* value of the quarter-of-year, from 1 to 4, will be returned.
* All other `ChronoField` instances will throw an `UnsupportedTemporalTypeException`.
*
* If the field is not a `ChronoField`, then the result of this method
* is obtained by invoking `TemporalField.getFrom(TemporalAccessor)`
* passing `this` as the argument. Whether the value can be obtained,
* and what the value represents, is determined by the field.
*
* @param {TemporalField} field - the field to get, not null
* @return {number} the value for the field
* @throws {DateTimeException} if a value for the field cannot be obtained
* @throws {UnsupportedTemporalTypeException} if the field is not supported
* @throws {ArithmeticException} if numeric overflow occurs
*/
getLong(field) {
requireNonNull(field, 'field');
if (field === IsoFields.QUARTER_OF_YEAR) {
return this.value();
} else if (field instanceof ChronoField) {
throw new UnsupportedTemporalTypeException(`Unsupported field: ${field}`);
}
return field.getFrom(this);
}
//-----------------------------------------------------------------------
/**
* Returns the quarter that is the specified number of quarters after this one.
*
* The calculation rolls around the end of the year from Q4 to Q1.
* The specified period may be negative.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} quarters - the quarters to add, positive or negative
* @return {Quarter} the resulting quarter, not null
*/
plus(quarters) {
const amount = MathUtil.intMod(quarters, 4);
return QUARTERS[(this.ordinal() + amount + 4) % 4];
}
/**
* Returns the quarter that is the specified number of quarters before this one.
*
* The calculation rolls around the start of the year from Q1 to Q4.
* The specified period may be negative.
*
* This instance is immutable and unaffected by this method call.
*
* @param {number} quarters - the quarters to subtract, positive or negative
* @return {Quarter} the resulting quarter, not null
*/
minus(quarters) {
return this.plus(-(MathUtil.intMod(quarters, 4)));
}
//-----------------------------------------------------------------------
/**
* Gets the length of this quarter in days.
*
* This takes a flag to determine whether to return the length for a leap year or not.
*
* Q1 has 90 in a standard year and 91 days in a leap year.
* Q2 has 91 days.
* Q3 and Q4 have 92 days.
*
* @param {boolean} leapYear - true if the length is required for a leap year
* @return {number} the length of this month in days, from 90 to 92
*/
length(leapYear) {
switch (this) {
case Quarter.Q1:
return (leapYear ? 91 : 90);
case Quarter.Q2:
return 91;
default:
return 92;
}
}
//-----------------------------------------------------------------------
/**
* Gets the first of the three months that this quarter refers to.
*
* Q1 will return January.
* Q2 will return April.
* Q3 will return July.
* Q4 will return October.
*
* To obtain the other two months of the quarter, simply use {@link Month#plus(long)}
* on the returned month.
*
* @return {Month} the first month in the quarter, not null
*/
firstMonth() {
switch (this) {
case Quarter.Q1:
return Month.JANUARY;
case Quarter.Q2:
return Month.APRIL;
case Quarter.Q3:
return Month.JULY;
case Quarter.Q4:
return Month.OCTOBER;
default:
throw new IllegalStateException('Unreachable');
}
}
//-----------------------------------------------------------------------
/**
* Queries this quarter-of-year using the specified query.
*
* This queries this quarter-of-year using the specified query strategy object.
* The `TemporalQuery` object defines the logic to be used to
* obtain the result. Read the documentation of the query to understand
* what the result of this method will be.
*
* The result of this method is obtained by invoking the
* {@link TemporalQuery.queryFrom(TemporalAccessor)} method on the
* specified query passing `this` as the argument.
*
* @param {TemporalQuery} query - the query to invoke, not null
* @return {*} the query result, null may be returned (defined by the query)
* @throws {DateTimeException} if unable to query (defined by the query)
* @throws {ArithmeticException} if numeric overflow occurs (defined by the query)
*/
query(query) {
requireNonNull(query, 'query');
requireInstance(query, TemporalQuery, 'query');
if (query === TemporalQueries.chronology()) {
return IsoChronology.INSTANCE;
} else if (query === TemporalQueries.precision()) {
return IsoFields.QUARTER_YEARS;
}
return super.query(query);
}
/**
* Adjusts the specified temporal object to have this quarter-of-year.
*
* This returns a temporal object of the same observable type as the input
* with the quarter-of-year changed to be the same as this.
*
* The adjustment is equivalent to using {@link Temporal.with}
* passing {@link IsoFields.QUARTER_OF_YEAR} as the field.
* If the specified temporal object does not use the ISO calendar system then
* a `DateTimeException` is thrown.
*
* In most cases, it is clearer to reverse the calling pattern by using
* {@link Temporal.with}:
* ```
* // these two lines are equivalent, but the second approach is recommended
* temporal = thisQuarter.adjustInto(temporal);
* temporal = temporal.with(thisQuarter);
* ```
*
* For example, given a date in May, the following are output:
* ```
* dateInMay.with(Q1); // three months earlier
* dateInMay.with(Q2); // no change
* dateInMay.with(Q3); // three months later
* dateInMay.with(Q4); // six months later
* ```
*
* This instance is immutable and unaffected by this method call.
*
* @param {Temporal} temporal - the target object to be adjusted, not null
* @return {Temporal} the adjusted object, not null
* @throws {DateTimeException} if unable to make the adjustment
* @throws {ArithmeticException} if numeric overflow occurs
*/
adjustInto(temporal) {
requireNonNull(temporal, 'temporal');
/* TODO: only IsoChronology for now
if (Chronology.from(temporal).equals(IsoChronology.INSTANCE) == false) {
throw new DateTimeException('Adjustment only supported on ISO date-time');
}
*/
return temporal.with(IsoFields.QUARTER_OF_YEAR, this.value());
}
//-----------------------------------------------------------------------
// Enum
//-----------------------------------------------------------------------
/**
*
* @return {number}
*/
ordinal() {
return this._value - 1;
}
/**
*
* @return {string}
*/
name() {
return this._name;
}
//-----------------------------------------------------------------------
// Comparable
//-----------------------------------------------------------------------
/**
* Compares this Quarter to another Quarter.
*
* The comparison is based on the value of the Quarter.
* It is "consistent with equals", as defined by {@link Comparable}.
*
* @param {Quarter} other - the other quarter to compare to, not null
* @return {number} the comparator value, negative if less, positive if greater
*/
compareTo(other) {
requireNonNull(other, 'other');
requireInstance(other, Quarter, 'other');
return this._value - other._value;
}
//-----------------------------------------------------------------------
// Object
//-----------------------------------------------------------------------
/**
* Outputs this quarter as a String, such as Q1
*
* @return {string} a string representation of this quarter, not null
*/
toString() {
return this.name();
}
/**
*
* @return {boolean}
*/
equals(other){
return this === other;
}
/**
* A hash code for this quarter.
*
* @return {number} a suitable hash code
*/
hashCode() {
return this._value;
}
}
let QUARTERS;
export function _init() {
/**
* The singleton instance for the first quarter-of-year, from January to March.
* This has the numeric value of `1`.
*/
Quarter.Q1 = new Quarter(1, 'Q1');
/**
* The singleton instance for the second quarter-of-year, from April to June.
* This has the numeric value of `2`.
*/
Quarter.Q2 = new Quarter(2, 'Q2');
/**
* The singleton instance for the third quarter-of-year, from July to September.
* This has the numeric value of `3`.
*/
Quarter.Q3 = new Quarter(3, 'Q3');
/**
* The singleton instance for the fourth quarter-of-year, from October to December.
* This has the numeric value of `4`.
*/
Quarter.Q4 = new Quarter(4, 'Q4');
Quarter.FROM = createTemporalQuery('Quarter.FROM', (temporal) => {
return Quarter.from(temporal);
});
QUARTERS = [
Quarter.Q1,
Quarter.Q2,
Quarter.Q3,
Quarter.Q4
];
}
// copied from packages/core/src/temporal/TemporalQuery.js
function createTemporalQuery(name, queryFromFunction) {
class ExtendedTemporalQuery extends TemporalQuery {
}
ExtendedTemporalQuery.prototype.queryFrom = queryFromFunction;
return new ExtendedTemporalQuery(name);
}