chrono-node
Version:
A natural language date parser in Javascript
35 lines • 1.75 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const constants_1 = require("../constants");
const results_1 = require("../../../results");
const AbstractParserWithWordBoundary_1 = require("../../../common/parsers/AbstractParserWithWordBoundary");
const timeunits_1 = require("../../../utils/timeunits");
const pattern_1 = require("../../../utils/pattern");
class DETimeUnitAgoFormatParser extends AbstractParserWithWordBoundary_1.AbstractParserWithWordBoundaryChecking {
constructor() {
super();
}
innerPattern() {
return new RegExp(`(?:\\s*((?:nächste|kommende|folgende|letzte|vergangene|vorige|vor(?:her|an)gegangene)(?:s|n|m|r)?|vor|in)\\s*)?` +
`(${constants_1.NUMBER_PATTERN})?` +
`(?:\\s*(nächste|kommende|folgende|letzte|vergangene|vorige|vor(?:her|an)gegangene)(?:s|n|m|r)?)?` +
`\\s*(${pattern_1.matchAnyPattern(constants_1.TIME_UNIT_DICTIONARY)})`, "i");
}
innerExtract(context, match) {
const num = match[2] ? constants_1.parseNumberPattern(match[2]) : 1;
const unit = constants_1.TIME_UNIT_DICTIONARY[match[4].toLowerCase()];
let timeUnits = {};
timeUnits[unit] = num;
let modifier = match[1] || match[3] || "";
modifier = modifier.toLowerCase();
if (!modifier) {
return;
}
if (/vor/.test(modifier) || /letzte/.test(modifier) || /vergangen/.test(modifier)) {
timeUnits = timeunits_1.reverseTimeUnits(timeUnits);
}
return results_1.ParsingComponents.createRelativeFromReference(context.reference, timeUnits);
}
}
exports.default = DETimeUnitAgoFormatParser;
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