chrono-node
Version:
A natural language date parser in Javascript
44 lines • 1.86 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 AbstractParserWithWordBoundary_1 = require("../../../common/parsers/AbstractParserWithWordBoundary");
const PATTERN = new RegExp(`((?:in)\\s*)?` +
`(${(0, pattern_1.matchAnyPattern)(constants_1.MONTH_DICTIONARY)})` +
`\\s*` +
`(?:` +
`(?:,|-|of)?\\s*(${constants_2.YEAR_PATTERN})?` +
")?" +
"(?=[^\\s\\w]|\\s+[^0-9]|\\s+$|$)", "i");
const PREFIX_GROUP = 1;
const MONTH_NAME_GROUP = 2;
const YEAR_GROUP = 3;
class ENMonthNameParser extends AbstractParserWithWordBoundary_1.AbstractParserWithWordBoundaryChecking {
innerPattern() {
return PATTERN;
}
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[PREFIX_GROUP] || "").length, match.index + match[0].length);
result.start.imply("day", 1);
result.start.addTag("parser/ENMonthNameParser");
const month = constants_1.MONTH_DICTIONARY[monthName];
result.start.assign("month", month);
if (match[YEAR_GROUP]) {
const year = (0, constants_2.parseYear)(match[YEAR_GROUP]);
result.start.assign("year", year);
}
else {
const year = (0, years_1.findYearClosestToRef)(context.refDate, 1, month);
result.start.imply("year", year);
}
return result;
}
}
exports.default = ENMonthNameParser;
//# sourceMappingURL=ENMonthNameParser.js.map