85 lines
1.9 KiB
JavaScript
85 lines
1.9 KiB
JavaScript
import { numericPatterns } from "../constants.mjs";
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import { Parser } from "../Parser.mjs";
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import { mapValue, parseNDigits, parseNumericPattern } from "../utils.mjs";
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export class MonthParser extends Parser {
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incompatibleTokens = [
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"Y",
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"R",
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"q",
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"Q",
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"L",
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"w",
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"I",
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"D",
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"i",
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"e",
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"c",
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"t",
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"T",
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];
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priority = 110;
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parse(dateString, token, match) {
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const valueCallback = (value) => value - 1;
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switch (token) {
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// 1, 2, ..., 12
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case "M":
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return mapValue(
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parseNumericPattern(numericPatterns.month, dateString),
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valueCallback,
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);
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// 01, 02, ..., 12
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case "MM":
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return mapValue(parseNDigits(2, dateString), valueCallback);
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// 1st, 2nd, ..., 12th
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case "Mo":
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return mapValue(
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match.ordinalNumber(dateString, {
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unit: "month",
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}),
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valueCallback,
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);
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// Jan, Feb, ..., Dec
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case "MMM":
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return (
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match.month(dateString, {
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width: "abbreviated",
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context: "formatting",
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}) ||
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match.month(dateString, { width: "narrow", context: "formatting" })
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);
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// J, F, ..., D
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case "MMMMM":
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return match.month(dateString, {
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width: "narrow",
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context: "formatting",
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});
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// January, February, ..., December
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case "MMMM":
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default:
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return (
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match.month(dateString, { width: "wide", context: "formatting" }) ||
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match.month(dateString, {
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width: "abbreviated",
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context: "formatting",
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}) ||
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match.month(dateString, { width: "narrow", context: "formatting" })
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);
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}
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}
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validate(_date, value) {
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return value >= 0 && value <= 11;
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}
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set(date, _flags, value) {
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date.setMonth(value, 1);
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date.setHours(0, 0, 0, 0);
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return date;
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}
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}
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