@iro/calendar/dist/lib/LunarMonth.js

lunar is a calendar library for Solar and Chinese Lunar.

import { LunarUtil } from './LunarUtil';
import { LunarYear } from './LunarYear';
import { Solar } from './Solar';
import { NineStar } from './NineStar';
var LunarMonth = (function () {
    function LunarMonth(lunarYear, lunarMonth, dayCount, firstJulianDay) {
        this._year = lunarYear;
        this._month = lunarMonth;
        this._dayCount = dayCount;
        this._firstJulianDay = firstJulianDay;
    }
    LunarMonth.fromYm = function (lunarYear, lunarMonth) {
        return LunarYear.fromYear(lunarYear).getMonth(lunarMonth);
    };
    LunarMonth.prototype.getYear = function () {
        return this._year;
    };
    LunarMonth.prototype.getMonth = function () {
        return this._month;
    };
    LunarMonth.prototype.isLeap = function () {
        return this._month < 0;
    };
    LunarMonth.prototype.getDayCount = function () {
        return this._dayCount;
    };
    LunarMonth.prototype.getFirstJulianDay = function () {
        return this._firstJulianDay;
    };
    LunarMonth.prototype.getPositionTaiSui = function () {
        var p;
        var m = Math.abs(this._month);
        switch (m) {
            case 1:
            case 5:
            case 9:
                p = '艮';
                break;
            case 3:
            case 7:
            case 11:
                p = '坤';
                break;
            case 4:
            case 8:
            case 12:
                p = '巽';
                break;
            default:
                p = LunarUtil.POSITION_GAN[Solar.fromJulianDay(this.getFirstJulianDay()).getLunar().getMonthGanIndex()];
        }
        return p;
    };
    LunarMonth.prototype.getPositionTaiSuiDesc = function () {
        return LunarUtil.POSITION_DESC.get(this.getPositionTaiSui());
    };
    LunarMonth.prototype.getNineStar = function () {
        var index = LunarYear.fromYear(this._year).getZhiIndex() % 3;
        var m = Math.abs(this._month);
        var monthZhiIndex = (13 + m) % 12;
        var n = 27 - (index * 3);
        if (monthZhiIndex < LunarUtil.BASE_MONTH_ZHI_INDEX) {
            n -= 3;
        }
        var offset = (n - monthZhiIndex) % 9;
        return NineStar.fromIndex(offset);
    };
    LunarMonth.prototype.toString = function () {
        return "".concat(this.getYear(), "\u5E74").concat(this.isLeap() ? '闰' : '').concat(LunarUtil.MONTH[Math.abs(this.getMonth())], "\u6708(").concat(this.getDayCount(), ")\u5929");
    };
    LunarMonth.prototype.next = function (n) {
        if (0 == n) {
            return LunarMonth.fromYm(this._year, this._month);
        }
        else {
            var rest = Math.abs(n);
            var ny = this._year;
            var iy = ny;
            var im = this._month;
            var index = 0;
            var months = LunarYear.fromYear(ny).getMonths();
            var i = void 0;
            var m = void 0;
            var size = void 0;
            if (n > 0) {
                while (true) {
                    size = months.length;
                    for (i = 0; i < size; i++) {
                        m = months[i];
                        if (m.getYear() === iy && m.getMonth() === im) {
                            index = i;
                            break;
                        }
                    }
                    var more = size - index - 1;
                    if (rest < more) {
                        break;
                    }
                    rest -= more;
                    var lastMonth = months[size - 1];
                    iy = lastMonth.getYear();
                    im = lastMonth.getMonth();
                    ny++;
                    months = LunarYear.fromYear(ny).getMonths();
                }
                return months[index + rest];
            }
            else {
                while (true) {
                    size = months.length;
                    for (i = 0; i < size; i++) {
                        m = months[i];
                        if (m.getYear() === iy && m.getMonth() === im) {
                            index = i;
                            break;
                        }
                    }
                    if (rest <= index) {
                        break;
                    }
                    rest -= index;
                    var firstMonth = months[0];
                    iy = firstMonth.getYear();
                    im = firstMonth.getMonth();
                    ny--;
                    months = LunarYear.fromYear(ny).getMonths();
                }
                return months[index - rest];
            }
        }
    };
    return LunarMonth;
}());
export { LunarMonth };
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