chrono-node
Version:
A natural language date parser in Javascript
55 lines • 2.43 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const years_1 = require("../../../calculation/years");
const constants_1 = require("../constants");
const constants_2 = require("../constants");
const constants_3 = require("../constants");
const pattern_1 = require("../../../utils/pattern");
const AbstractParserWithWordBoundaryChecking_1 = require("./AbstractParserWithWordBoundaryChecking");
const DATE_GROUP = 1;
const DATE_TO_GROUP = 2;
const MONTH_NAME_GROUP = 3;
const YEAR_GROUP = 4;
class ARMonthNameLittleEndianParser extends AbstractParserWithWordBoundaryChecking_1.AbstractParserWithLeftRightBoundaryChecking {
innerPatternString(context) {
return (`(?:(?:في|من)\\s*)?` +
`(${constants_3.ORDINAL_NUMBER_PATTERN})` +
`(?:` +
`\\s*(?:إلى|وحتى|حتى|-|–)\\s*` +
`(${constants_3.ORDINAL_NUMBER_PATTERN})` +
`)?` +
`(?:\\s*(?:من)?\\s*)` +
`(${(0, pattern_1.matchAnyPattern)(constants_1.MONTH_DICTIONARY)})` +
`(?:` +
`(?:\\s*(?:،|,)?\\s*(?:سنة|عام)?\\s*)` +
`(${constants_2.YEAR_PATTERN}(?![^\\s]\\d))` +
`)?`);
}
innerExtract(context, match) {
const month = constants_1.MONTH_DICTIONARY[match[MONTH_NAME_GROUP].toLowerCase()];
const day = (0, constants_3.parseOrdinalNumberPattern)(match[DATE_GROUP]);
if (day > 31 || day < 1) {
match.index = match.index + match[DATE_GROUP].length;
return null;
}
const result = context.createParsingResult(match.index, match[0]);
result.start.assign("month", month);
result.start.assign("day", day);
if (match[YEAR_GROUP]) {
const yearNumber = (0, constants_2.parseYear)(match[YEAR_GROUP]);
result.start.assign("year", yearNumber);
}
else {
const year = (0, years_1.findYearClosestToRef)(context.refDate, day, month);
result.start.imply("year", year);
}
if (match[DATE_TO_GROUP]) {
const endDate = (0, constants_3.parseOrdinalNumberPattern)(match[DATE_TO_GROUP]);
result.end = result.start.clone();
result.end.assign("day", endDate);
}
return result;
}
}
exports.default = ARMonthNameLittleEndianParser;
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