chrono-node
Version:
A natural language date parser in Javascript
36 lines • 1.59 kB
JavaScript
import { WEEKDAY_DICTIONARY } from "../constants.js";
import { matchAnyPattern } from "../../../utils/pattern.js";
import { AbstractParserWithWordBoundaryChecking } from "../../../common/parsers/AbstractParserWithWordBoundary.js";
import { createParsingComponentsAtWeekday } from "../../../calculation/weekdays.js";
const PATTERN = new RegExp("(?:(?:\\,|\\(|\\（)\\s*)?" +
"(?:(viime|edellinen|edellisenä|ensi|seuraava|seuraavana|tämä|tänä)\\s*)?" +
`(${matchAnyPattern(WEEKDAY_DICTIONARY)})` +
"(?:\\s*(?:\\,|\\)|\\）))?" +
"(?:\\s*(viime|ensi|seuraava)\\s*viikolla)?" +
"(?=\\W|$)", "i");
const PREFIX_GROUP = 1;
const WEEKDAY_GROUP = 2;
const SUFFIX_GROUP = 3;
export default class FIWeekdayParser extends AbstractParserWithWordBoundaryChecking {
innerPattern() {
return PATTERN;
}
innerExtract(context, match) {
const dayOfWeek = match[WEEKDAY_GROUP].toLowerCase();
const offset = WEEKDAY_DICTIONARY[dayOfWeek];
const prefix = match[PREFIX_GROUP];
const postfix = match[SUFFIX_GROUP];
let modifierWord = prefix || postfix;
modifierWord = modifierWord || "";
modifierWord = modifierWord.toLowerCase();
let modifier = null;
if (modifierWord.match(/viime|edellinen|edellisenä/)) {
modifier = "last";
}
else if (modifierWord.match(/ensi|seuraava|seuraavana/)) {
modifier = "next";
}
return createParsingComponentsAtWeekday(context.reference, offset, modifier);
}
}
//# sourceMappingURL=FIWeekdayParser.js.map