chrono-node
Version:
A natural language date parser in Javascript
33 lines • 1.34 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("(" +
matchAnyPattern(WEEKDAY_DICTIONARY) +
")" +
"(?:\\s*(này|tới|sau(?!\\s*khi)|qua))?" +
"(?=\\W|$)", "i");
const WEEKDAY_GROUP = 1;
const MODIFIER_GROUP = 2;
export default class VIWeekdayParser extends AbstractParserWithWordBoundaryChecking {
innerPattern() {
return PATTERN;
}
innerExtract(context, match) {
const dowText = match[WEEKDAY_GROUP].toLowerCase();
const dow = WEEKDAY_DICTIONARY[dowText];
if (dow === undefined)
return null;
const modifier = match[MODIFIER_GROUP];
let modifierType = null;
if (modifier) {
const m = modifier.toLowerCase();
if (m.includes("tới") || m.includes("sau"))
modifierType = "next";
else if (m.includes("qua"))
modifierType = "last";
}
return createParsingComponentsAtWeekday(context.reference, dow, modifierType);
}
}
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