chrono-node
Version:
A natural language date parser in Javascript
57 lines • 2.76 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const constants_1 = require("../constants");
const results_1 = require("../../../results");
const dayjs_1 = __importDefault(require("dayjs"));
const AbstractParserWithWordBoundary_1 = require("../../../common/parsers/AbstractParserWithWordBoundary");
const pattern_1 = require("../../../utils/pattern");
const PATTERN = new RegExp(`(this|last|past|next|after\\s*this)\\s*(${(0, pattern_1.matchAnyPattern)(constants_1.TIME_UNIT_DICTIONARY)})(?=\\s*)` + "(?=\\W|$)", "i");
const MODIFIER_WORD_GROUP = 1;
const RELATIVE_WORD_GROUP = 2;
class ENRelativeDateFormatParser extends AbstractParserWithWordBoundary_1.AbstractParserWithWordBoundaryChecking {
innerPattern() {
return PATTERN;
}
innerExtract(context, match) {
const modifier = match[MODIFIER_WORD_GROUP].toLowerCase();
const unitWord = match[RELATIVE_WORD_GROUP].toLowerCase();
const timeunit = constants_1.TIME_UNIT_DICTIONARY[unitWord];
if (modifier == "next" || modifier.startsWith("after")) {
const timeUnits = {};
timeUnits[timeunit] = 1;
return results_1.ParsingComponents.createRelativeFromReference(context.reference, timeUnits);
}
if (modifier == "last" || modifier == "past") {
const timeUnits = {};
timeUnits[timeunit] = -1;
return results_1.ParsingComponents.createRelativeFromReference(context.reference, timeUnits);
}
const components = context.createParsingComponents();
let date = (0, dayjs_1.default)(context.reference.instant);
if (unitWord.match(/week/i)) {
date = date.add(-date.get("d"), "d");
components.imply("day", date.date());
components.imply("month", date.month() + 1);
components.imply("year", date.year());
}
else if (unitWord.match(/month/i)) {
date = date.add(-date.date() + 1, "d");
components.imply("day", date.date());
components.assign("year", date.year());
components.assign("month", date.month() + 1);
}
else if (unitWord.match(/year/i)) {
date = date.add(-date.date() + 1, "d");
date = date.add(-date.month(), "month");
components.imply("day", date.date());
components.imply("month", date.month() + 1);
components.assign("year", date.year());
}
return components;
}
}
exports.default = ENRelativeDateFormatParser;
//# sourceMappingURL=ENRelativeDateFormatParser.js.map