chrono-node
Version:
A natural language date parser in Javascript
49 lines • 2.46 kB
JavaScript
import { TIME_UNIT_DICTIONARY } from "../constants.js";
import { ParsingComponents } from "../../../results.js";
import { matchAnyPattern } from "../../../utils/pattern.js";
import { AbstractParserWithLeftRightBoundaryChecking } from "./AbstractParserWithWordBoundaryChecking.js";
const MODIFIER_WORD_GROUP = 1;
const RELATIVE_WORD_GROUP = 2;
export default class RURelativeDateFormatParser extends AbstractParserWithLeftRightBoundaryChecking {
innerPatternString(context) {
return `(в прошлом|на прошлой|на следующей|в следующем|на этой|в этом)\\s*(${matchAnyPattern(TIME_UNIT_DICTIONARY)})`;
}
innerExtract(context, match) {
const modifier = match[MODIFIER_WORD_GROUP].toLowerCase();
const unitWord = match[RELATIVE_WORD_GROUP].toLowerCase();
const timeunit = TIME_UNIT_DICTIONARY[unitWord];
if (modifier == "на следующей" || modifier == "в следующем") {
const timeUnits = {};
timeUnits[timeunit] = 1;
return ParsingComponents.createRelativeFromReference(context.reference, timeUnits);
}
if (modifier == "в прошлом" || modifier == "на прошлой") {
const timeUnits = {};
timeUnits[timeunit] = -1;
return ParsingComponents.createRelativeFromReference(context.reference, timeUnits);
}
const components = context.createParsingComponents();
let date = new Date(context.reference.instant.getTime());
if (timeunit.match(/week/i)) {
date.setDate(date.getDate() - date.getDay());
components.imply("day", date.getDate());
components.imply("month", date.getMonth() + 1);
components.imply("year", date.getFullYear());
}
else if (timeunit.match(/month/i)) {
date.setDate(1);
components.imply("day", date.getDate());
components.assign("year", date.getFullYear());
components.assign("month", date.getMonth() + 1);
}
else if (timeunit.match(/year/i)) {
date.setDate(1);
date.setMonth(0);
components.imply("day", date.getDate());
components.imply("month", date.getMonth() + 1);
components.assign("year", date.getFullYear());
}
return components;
}
}
//# sourceMappingURL=RURelativeDateFormatParser.js.map