chrono-node
Version:
A natural language date parser in Javascript
36 lines • 1.31 kB
JavaScript
import { findYearClosestToRef } from "../../../calculation/years.js";
import { YEAR_PATTERN, parseYear } from "../constants.js";
import { AbstractParserWithWordBoundaryChecking } from "../../../common/parsers/AbstractParserWithWordBoundary.js";
const PATTERN = new RegExp("(?:ng\u00e0y\\s*)?" +
"([0-9]{1,2})" +
"\\s*th\u00e1ng\\s*" +
"([0-9]{1,2})" +
"(?:\\s*n\u0103m\\s*(" +
YEAR_PATTERN +
"))?" +
"(?=\\W|$)", "i");
const DAY_GROUP = 1;
const MONTH_GROUP = 2;
const YEAR_GROUP = 3;
export default class VIStandardParser extends AbstractParserWithWordBoundaryChecking {
innerPattern() {
return PATTERN;
}
innerExtract(context, match) {
const day = parseInt(match[DAY_GROUP]);
const month = parseInt(match[MONTH_GROUP]);
if (day > 31 || month > 12)
return null;
const result = context.createParsingResult(match.index, match[0]);
result.start.assign("day", day);
result.start.assign("month", month);
if (match[YEAR_GROUP]) {
result.start.assign("year", parseYear(match[YEAR_GROUP]));
}
else {
result.start.imply("year", findYearClosestToRef(context.refDate, day, month));
}
return result;
}
}
//# sourceMappingURL=VIStandardParser.js.map