chrono-node
Version:
A natural language date parser in Javascript
71 lines • 2.91 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const dayjs_1 = __importDefault(require("dayjs"));
const AbstractParserWithWordBoundary_1 = require("../../../../common/parsers/AbstractParserWithWordBoundary");
const constants_1 = require("../constants");
const PATTERN = new RegExp("(?<prefix>上|下|这)(?:个)?(?:星期|礼拜|周)(?<weekday>" + Object.keys(constants_1.WEEKDAY_OFFSET).join("|") + ")");
class ZHHansRelationWeekdayParser extends AbstractParserWithWordBoundary_1.AbstractParserWithWordBoundaryChecking {
innerPattern() {
return PATTERN;
}
innerExtract(context, match) {
const result = context.createParsingResult(match.index, match[0]);
const dayOfWeek = match.groups.weekday;
const offset = constants_1.WEEKDAY_OFFSET[dayOfWeek];
if (offset === undefined)
return null;
let modifier = null;
const prefix = match.groups.prefix;
if (prefix == "上") {
modifier = "last";
}
else if (prefix == "下") {
modifier = "next";
}
else if (prefix == "这") {
modifier = "this";
}
let startMoment = dayjs_1.default(context.refDate);
let startMomentFixed = false;
const refOffset = startMoment.day();
if (modifier == "last" || modifier == "past") {
startMoment = startMoment.day(offset - 7);
startMomentFixed = true;
}
else if (modifier == "next") {
startMoment = startMoment.day(offset + 7);
startMomentFixed = true;
}
else if (modifier == "this") {
startMoment = startMoment.day(offset);
}
else {
if (Math.abs(offset - 7 - refOffset) < Math.abs(offset - refOffset)) {
startMoment = startMoment.day(offset - 7);
}
else if (Math.abs(offset + 7 - refOffset) < Math.abs(offset - refOffset)) {
startMoment = startMoment.day(offset + 7);
}
else {
startMoment = startMoment.day(offset);
}
}
result.start.assign("weekday", offset);
if (startMomentFixed) {
result.start.assign("day", startMoment.date());
result.start.assign("month", startMoment.month() + 1);
result.start.assign("year", startMoment.year());
}
else {
result.start.imply("day", startMoment.date());
result.start.imply("month", startMoment.month() + 1);
result.start.imply("year", startMoment.year());
}
return result;
}
}
exports.default = ZHHansRelationWeekdayParser;
//# sourceMappingURL=ZHHansRelationWeekdayParser.js.map