75 lines
1.7 KiB
JavaScript
75 lines
1.7 KiB
JavaScript
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import { getWeekYear } from "../../../getWeekYear.mjs";
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import { startOfWeek } from "../../../startOfWeek.mjs";
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import { Parser } from "../Parser.mjs";
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import { mapValue, normalizeTwoDigitYear, parseNDigits } from "../utils.mjs";
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// Local week-numbering year
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export class LocalWeekYearParser extends Parser {
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priority = 130;
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parse(dateString, token, match) {
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const valueCallback = (year) => ({
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year,
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isTwoDigitYear: token === "YY",
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});
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switch (token) {
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case "Y":
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return mapValue(parseNDigits(4, dateString), valueCallback);
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case "Yo":
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return mapValue(
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match.ordinalNumber(dateString, {
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unit: "year",
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}),
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valueCallback,
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);
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default:
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return mapValue(parseNDigits(token.length, dateString), valueCallback);
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}
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}
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validate(_date, value) {
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return value.isTwoDigitYear || value.year > 0;
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}
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set(date, flags, value, options) {
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const currentYear = getWeekYear(date, options);
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if (value.isTwoDigitYear) {
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const normalizedTwoDigitYear = normalizeTwoDigitYear(
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value.year,
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currentYear,
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);
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date.setFullYear(
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normalizedTwoDigitYear,
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0,
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options.firstWeekContainsDate,
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);
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date.setHours(0, 0, 0, 0);
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return startOfWeek(date, options);
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}
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const year =
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!("era" in flags) || flags.era === 1 ? value.year : 1 - value.year;
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date.setFullYear(year, 0, options.firstWeekContainsDate);
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date.setHours(0, 0, 0, 0);
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return startOfWeek(date, options);
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}
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incompatibleTokens = [
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"y",
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"R",
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"u",
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"Q",
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"q",
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"M",
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"L",
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"I",
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"d",
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"D",
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"i",
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"t",
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"T",
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];
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}
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