chrono-node
Version:
A natural language date parser in Javascript
43 lines • 1.75 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("../../../common/calculation/weekdays");
const PATTERN = new RegExp("(?:(?:\\,|\\(|\\（)\\s*)?" +
"(?:on\\s*?)?" +
"(?:(this|last|past|next)\\s*)?" +
`(${pattern_1.matchAnyPattern(constants_1.WEEKDAY_DICTIONARY)})` +
"(?:\\s*(?:\\,|\\)|\\）))?" +
"(?:\\s*(this|last|past|next)\\s*week)?" +
"(?=\\W|$)", "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 dayOfWeek = match[WEEKDAY_GROUP].toLowerCase();
const weekday = constants_1.WEEKDAY_DICTIONARY[dayOfWeek];
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";
}
return weekdays_1.createParsingComponentsAtWeekday(context.reference, weekday, modifier);
}
}
exports.default = ENWeekdayParser;
//# sourceMappingURL=ENWeekdayParser.js.map