chrono-node
Version:
A natural language date parser in Javascript
22 lines • 1.11 kB
JavaScript
import { TIME_UNITS_PATTERN, parseTimeUnits } from "../constants.js";
import { ParsingComponents } from "../../../results.js";
import { reverseTimeUnits } from "../../../utils/timeunits.js";
import { AbstractParserWithLeftRightBoundaryChecking } from "./AbstractParserWithWordBoundaryChecking.js";
export default class RUTimeUnitCasualRelativeFormatParser extends AbstractParserWithLeftRightBoundaryChecking {
innerPatternString(context) {
return `(эти|последние|прошлые|следующие|после|спустя|через|\\+|-)\\s*(${TIME_UNITS_PATTERN})`;
}
innerExtract(context, match) {
const prefix = match[1].toLowerCase();
let timeUnits = parseTimeUnits(match[2]);
switch (prefix) {
case "последние":
case "прошлые":
case "-":
timeUnits = reverseTimeUnits(timeUnits);
break;
}
return ParsingComponents.createRelativeFromReference(context.reference, timeUnits);
}
}
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