chrono-node
Version:
A natural language date parser in Javascript
41 lines • 1.62 kB
JavaScript
import { WEEKDAY_DICTIONARY } from "../constants.js";
import { matchAnyPattern } from "../../../utils/pattern.js";
import { AbstractParserWithWordBoundaryChecking } from "../../../common/parsers/AbstractParserWithWordBoundary.js";
import { createParsingComponentsAtWeekday } from "../../../common/calculation/weekdays.js";
const PATTERN = new RegExp("(?:(?:\\,|\\(|\\（)\\s*)?" +
"(?:(este|esta|pasado|pr[oó]ximo)\\s*)?" +
`(${matchAnyPattern(WEEKDAY_DICTIONARY)})` +
"(?:\\s*(?:\\,|\\)|\\）))?" +
"(?:\\s*(este|esta|pasado|pr[óo]ximo)\\s*semana)?" +
"(?=\\W|\\d|$)", "i");
const PREFIX_GROUP = 1;
const WEEKDAY_GROUP = 2;
const POSTFIX_GROUP = 3;
export default class ESWeekdayParser extends AbstractParserWithWordBoundaryChecking {
innerPattern() {
return PATTERN;
}
innerExtract(context, match) {
const dayOfWeek = match[WEEKDAY_GROUP].toLowerCase();
const weekday = WEEKDAY_DICTIONARY[dayOfWeek];
if (weekday === undefined) {
return null;
}
const prefix = match[PREFIX_GROUP];
const postfix = match[POSTFIX_GROUP];
let norm = prefix || postfix || "";
norm = norm.toLowerCase();
let modifier = null;
if (norm == "pasado") {
modifier = "this";
}
else if (norm == "próximo" || norm == "proximo") {
modifier = "next";
}
else if (norm == "este") {
modifier = "this";
}
return createParsingComponentsAtWeekday(context.reference, weekday, modifier);
}
}
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