chrono-node
Version:
A natural language date parser in Javascript
34 lines • 1.57 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 duration_1 = require("../../../calculation/duration");
const PATTERN = new RegExp(`(this|last|past|next|after|\\+|-)\\s*(${constants_1.TIME_UNITS_PATTERN})(?=\\W|$)`, "i");
const PATTERN_NO_ABBR = new RegExp(`(this|last|past|next|after|\\+|-)\\s*(${constants_1.TIME_UNITS_NO_ABBR_PATTERN})(?=\\W|$)`, "i");
class ENTimeUnitCasualRelativeFormatParser extends AbstractParserWithWordBoundary_1.AbstractParserWithWordBoundaryChecking {
constructor(allowAbbreviations = true) {
super();
this.allowAbbreviations = allowAbbreviations;
}
innerPattern() {
return this.allowAbbreviations ? PATTERN : PATTERN_NO_ABBR;
}
innerExtract(context, match) {
const prefix = match[1].toLowerCase();
let duration = (0, constants_1.parseTimeUnits)(match[2]);
if (!duration) {
return null;
}
switch (prefix) {
case "last":
case "past":
case "-":
duration = (0, duration_1.reverseDuration)(duration);
break;
}
return results_1.ParsingComponents.createRelativeFromReference(context.reference, duration);
}
}
exports.default = ENTimeUnitCasualRelativeFormatParser;
//# sourceMappingURL=ENTimeUnitCasualRelativeFormatParser.js.map