chrono-node
Version:
A natural language date parser in Javascript
64 lines • 2.67 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const constants_1 = require("../constants");
const pattern_1 = require("../../../utils/pattern");
const AbstractParserWithWordBoundary_1 = require("../../../common/parsers/AbstractParserWithWordBoundary");
const weekdays_1 = require("../../../calculation/weekdays");
const types_1 = require("../../../types");
const PATTERN = new RegExp("(?:(?:\\,|\\(|\\（)\\s*)?" +
"(?:on\\s*?)?" +
"(?:(this|last|past|next)\\s*)?" +
`(${(0, pattern_1.matchAnyPattern)(constants_1.WEEKDAY_DICTIONARY)}|weekend|weekday)` +
"(?:\\s*(?:\\,|\\)|\\）))?" +
"(?:\\s*(this|last|past|next)\\s*week)?" +
"(?=\\W|$)", "i");
const PREFIX_GROUP = 1;
const WEEKDAY_GROUP = 2;
const POSTFIX_GROUP = 3;
class ENWeekdayParser extends AbstractParserWithWordBoundary_1.AbstractParserWithWordBoundaryChecking {
innerPattern() {
return PATTERN;
}
innerExtract(context, match) {
const prefix = match[PREFIX_GROUP];
const postfix = match[POSTFIX_GROUP];
let modifierWord = prefix || postfix;
modifierWord = modifierWord || "";
modifierWord = modifierWord.toLowerCase();
let modifier = null;
if (modifierWord == "last" || modifierWord == "past") {
modifier = "last";
}
else if (modifierWord == "next") {
modifier = "next";
}
else if (modifierWord == "this") {
modifier = "this";
}
const weekday_word = match[WEEKDAY_GROUP].toLowerCase();
let weekday;
if (constants_1.WEEKDAY_DICTIONARY[weekday_word] !== undefined) {
weekday = constants_1.WEEKDAY_DICTIONARY[weekday_word];
}
else if (weekday_word == "weekend") {
weekday = modifier == "last" ? types_1.Weekday.SUNDAY : types_1.Weekday.SATURDAY;
}
else if (weekday_word == "weekday") {
const refWeekday = context.reference.getDateWithAdjustedTimezone().getDay();
if (refWeekday == types_1.Weekday.SUNDAY || refWeekday == types_1.Weekday.SATURDAY) {
weekday = modifier == "last" ? types_1.Weekday.FRIDAY : types_1.Weekday.MONDAY;
}
else {
weekday = refWeekday - 1;
weekday = modifier == "last" ? weekday - 1 : weekday + 1;
weekday = (weekday % 5) + 1;
}
}
else {
return null;
}
return (0, weekdays_1.createParsingComponentsAtWeekday)(context.reference, weekday, modifier);
}
}
exports.default = ENWeekdayParser;
//# sourceMappingURL=ENWeekdayParser.js.map