DateParser.mjs
1.28 KB
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import { numericPatterns } from "../constants.mjs";
import { Parser } from "../Parser.mjs";
import {
isLeapYearIndex,
parseNDigits,
parseNumericPattern,
} from "../utils.mjs";
const DAYS_IN_MONTH = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
const DAYS_IN_MONTH_LEAP_YEAR = [
31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31,
];
// Day of the month
export class DateParser extends Parser {
priority = 90;
subPriority = 1;
parse(dateString, token, match) {
switch (token) {
case "d":
return parseNumericPattern(numericPatterns.date, dateString);
case "do":
return match.ordinalNumber(dateString, { unit: "date" });
default:
return parseNDigits(token.length, dateString);
}
}
validate(date, value) {
const year = date.getFullYear();
const isLeapYear = isLeapYearIndex(year);
const month = date.getMonth();
if (isLeapYear) {
return value >= 1 && value <= DAYS_IN_MONTH_LEAP_YEAR[month];
} else {
return value >= 1 && value <= DAYS_IN_MONTH[month];
}
}
set(date, _flags, value) {
date.setDate(value);
date.setHours(0, 0, 0, 0);
return date;
}
incompatibleTokens = [
"Y",
"R",
"q",
"Q",
"w",
"I",
"D",
"i",
"e",
"c",
"t",
"T",
];
}