chrono-node
Version:
A natural language date parser in Javascript
41 lines • 1.75 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const constants_1 = require("../constants");
const years_1 = require("../../../calculation/years");
const pattern_1 = require("../../../utils/pattern");
const constants_2 = require("../constants");
const AbstractParserWithWordBoundaryChecking_1 = require("./AbstractParserWithWordBoundaryChecking");
const MONTH_NAME_GROUP = 2;
const YEAR_GROUP = 3;
class RUMonthNameParser extends AbstractParserWithWordBoundaryChecking_1.AbstractParserWithLeftBoundaryChecking {
innerPatternString(context) {
return (`((?:в)\\s*)?` +
`(${pattern_1.matchAnyPattern(constants_1.MONTH_DICTIONARY)})` +
`\\s*` +
`(?:` +
`[,-]?\\s*(${constants_2.YEAR_PATTERN})?` +
`)?` +
`(?=[^\\s\\w]|\\s+[^0-9]|\\s+$|$)`);
}
innerExtract(context, match) {
const monthName = match[MONTH_NAME_GROUP].toLowerCase();
if (match[0].length <= 3 && !constants_1.FULL_MONTH_NAME_DICTIONARY[monthName]) {
return null;
}
const result = context.createParsingResult(match.index, match.index + match[0].length);
result.start.imply("day", 1);
const month = constants_1.MONTH_DICTIONARY[monthName];
result.start.assign("month", month);
if (match[YEAR_GROUP]) {
const year = constants_2.parseYear(match[YEAR_GROUP]);
result.start.assign("year", year);
}
else {
const year = years_1.findYearClosestToRef(context.refDate, 1, month);
result.start.imply("year", year);
}
return result;
}
}
exports.default = RUMonthNameParser;
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