chrono-node
Version:
A natural language date parser in Javascript
22 lines • 1.09 kB
JavaScript
import { TIME_UNITS_PATTERN, parseDuration } from "../constants.js";
import { ParsingComponents } from "../../../results.js";
import { AbstractParserWithLeftRightBoundaryChecking } from "./AbstractParserWithWordBoundaryChecking.js";
import { reverseDuration } from "../../../calculation/duration.js";
export default class UKTimeUnitCasualRelativeFormatParser extends AbstractParserWithLeftRightBoundaryChecking {
innerPatternString(context) {
return `(ці|останні|минулі|майбутні|наступні|після|через|\\+|-)\\s*(${TIME_UNITS_PATTERN})`;
}
innerExtract(context, match) {
const prefix = match[1].toLowerCase();
let timeUnits = parseDuration(match[3]);
switch (prefix) {
case "останні":
case "минулі":
case "-":
timeUnits = reverseDuration(timeUnits);
break;
}
return ParsingComponents.createRelativeFromReference(context.reference, timeUnits);
}
}
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