Function rebuildMonth

codebase/sources/dhtmlxscheduler.es.js:17438–17476

(year, month, yearlen, mrange, wdaymask, options)

  return { mmask: M366MASK, mdaymask: MDAY366MASK, nmdaymask: NMDAY366MASK, wdaymask: WDAYMASK.slice(wday), mrange: M366RANGE };
}
function rebuildMonth(year, month, yearlen, mrange, wdaymask, options) {
  var result = { lastyear: year, lastmonth: month, nwdaymask: [] };
  var ranges = [];
  if (options.freq === RRule.YEARLY) {
    if (empty(options.bymonth)) {
      ranges = [[0, yearlen]];
    } else {
      for (var j = 0; j < options.bymonth.length; j++) {
        month = options.bymonth[j];
        ranges.push(mrange.slice(month - 1, month + 1));
      }
    }
  } else if (options.freq === RRule.MONTHLY) {
    ranges = [mrange.slice(month - 1, month + 1)];
  }
  if (empty(ranges)) {
    return result;
  }
  result.nwdaymask = repeat(0, yearlen);
  for (var j = 0; j < ranges.length; j++) {
    var rang = ranges[j];
    var first = rang[0];
    var last = rang[1] - 1;
    for (var k = 0; k < options.bynweekday.length; k++) {
      var i = void 0;
      var _a = options.bynweekday[k], wday = _a[0], n = _a[1];
      if (n < 0) {
        i = last + (n + 1) * 7;
        i -= pymod(wdaymask[i] - wday, 7);
      } else {
        i = first + (n - 1) * 7;
        i += pymod(7 - wdaymask[i] + wday, 7);
      }
      if (first <= i && i <= last)
        result.nwdaymask[i] = 1;
    }
  }
  return result;
}
function easter(y, offset) {
  if (offset === void 0) {
    offset = 0;