chrono-node
Version:
A natural language date parser in Javascript
55 lines • 2.35 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const AbstractParserWithWordBoundary_1 = require("../../../common/parsers/AbstractParserWithWordBoundary");
const types_1 = require("../../../types");
const dates_1 = require("../../../utils/dates");
const DATE_GROUP = 1;
const TIME_OF_DAY_GROUP = 2;
class NLCasualDateTimeParser extends AbstractParserWithWordBoundary_1.AbstractParserWithWordBoundaryChecking {
innerPattern(context) {
return /(gisteren|morgen|van)(ochtend|middag|namiddag|avond|nacht)(?=\W|$)/i;
}
innerExtract(context, match) {
const dateText = match[DATE_GROUP].toLowerCase();
const timeText = match[TIME_OF_DAY_GROUP].toLowerCase();
const component = context.createParsingComponents();
const targetDate = context.refDate;
switch (dateText) {
case "gisteren":
const previousDay = new Date(targetDate.getTime());
previousDay.setDate(previousDay.getDate() - 1);
(0, dates_1.assignSimilarDate)(component, previousDay);
break;
case "van":
(0, dates_1.assignSimilarDate)(component, targetDate);
break;
case "morgen":
const nextDay = new Date(targetDate.getTime());
nextDay.setDate(nextDay.getDate() + 1);
(0, dates_1.assignSimilarDate)(component, nextDay);
(0, dates_1.implySimilarTime)(component, nextDay);
break;
}
switch (timeText) {
case "ochtend":
component.imply("meridiem", types_1.Meridiem.AM);
component.imply("hour", 6);
break;
case "middag":
component.imply("meridiem", types_1.Meridiem.AM);
component.imply("hour", 12);
break;
case "namiddag":
component.imply("meridiem", types_1.Meridiem.PM);
component.imply("hour", 15);
break;
case "avond":
component.imply("meridiem", types_1.Meridiem.PM);
component.imply("hour", 20);
break;
}
return component;
}
}
exports.default = NLCasualDateTimeParser;
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