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import {CalendarDate as $35ea8db9cb2ccb90$export$99faa760c7908e4f} from "./CalendarDate.module.js";
import {GregorianCalendar as $3b62074eb05584b2$export$80ee6245ec4f29ec} from "./GregorianCalendar.module.js";
/*
* Copyright 2020 Adobe. All rights reserved.
* This file is licensed to you under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. You may obtain a copy
* of the License at http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under
* the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
* OF ANY KIND, either express or implied. See the License for the specific language
* governing permissions and limitations under the License.
*/ // Portions of the code in this file are based on code from the TC39 Temporal proposal.
// Original licensing can be found in the NOTICE file in the root directory of this source tree.
const $62225008020f0a13$var$ERA_START_DATES = [
[
1868,
9,
8
],
[
1912,
7,
30
],
[
1926,
12,
25
],
[
1989,
1,
8
],
[
2019,
5,
1
]
];
const $62225008020f0a13$var$ERA_END_DATES = [
[
1912,
7,
29
],
[
1926,
12,
24
],
[
1989,
1,
7
],
[
2019,
4,
30
]
];
const $62225008020f0a13$var$ERA_ADDENDS = [
1867,
1911,
1925,
1988,
2018
];
const $62225008020f0a13$var$ERA_NAMES = [
'meiji',
'taisho',
'showa',
'heisei',
'reiwa'
];
function $62225008020f0a13$var$findEraFromGregorianDate(date) {
const idx = $62225008020f0a13$var$ERA_START_DATES.findIndex(([year, month, day])=>{
if (date.year < year) return true;
if (date.year === year && date.month < month) return true;
if (date.year === year && date.month === month && date.day < day) return true;
return false;
});
if (idx === -1) return $62225008020f0a13$var$ERA_START_DATES.length - 1;
if (idx === 0) return 0;
return idx - 1;
}
function $62225008020f0a13$var$toGregorian(date) {
let eraAddend = $62225008020f0a13$var$ERA_ADDENDS[$62225008020f0a13$var$ERA_NAMES.indexOf(date.era)];
if (!eraAddend) throw new Error('Unknown era: ' + date.era);
return new (0, $35ea8db9cb2ccb90$export$99faa760c7908e4f)(date.year + eraAddend, date.month, date.day);
}
class $62225008020f0a13$export$b746ab2b60cdffbf extends (0, $3b62074eb05584b2$export$80ee6245ec4f29ec) {
fromJulianDay(jd) {
let date = super.fromJulianDay(jd);
let era = $62225008020f0a13$var$findEraFromGregorianDate(date);
return new (0, $35ea8db9cb2ccb90$export$99faa760c7908e4f)(this, $62225008020f0a13$var$ERA_NAMES[era], date.year - $62225008020f0a13$var$ERA_ADDENDS[era], date.month, date.day);
}
toJulianDay(date) {
return super.toJulianDay($62225008020f0a13$var$toGregorian(date));
}
balanceDate(date) {
let gregorianDate = $62225008020f0a13$var$toGregorian(date);
let era = $62225008020f0a13$var$findEraFromGregorianDate(gregorianDate);
if ($62225008020f0a13$var$ERA_NAMES[era] !== date.era) {
date.era = $62225008020f0a13$var$ERA_NAMES[era];
date.year = gregorianDate.year - $62225008020f0a13$var$ERA_ADDENDS[era];
}
// Constrain in case we went before the first supported era.
this.constrainDate(date);
}
constrainDate(date) {
let idx = $62225008020f0a13$var$ERA_NAMES.indexOf(date.era);
let end = $62225008020f0a13$var$ERA_END_DATES[idx];
if (end != null) {
let [endYear, endMonth, endDay] = end;
// Constrain the year to the maximum possible value in the era.
// Then constrain the month and day fields within that.
let maxYear = endYear - $62225008020f0a13$var$ERA_ADDENDS[idx];
date.year = Math.max(1, Math.min(maxYear, date.year));
if (date.year === maxYear) {
date.month = Math.min(endMonth, date.month);
if (date.month === endMonth) date.day = Math.min(endDay, date.day);
}
}
if (date.year === 1 && idx >= 0) {
let [, startMonth, startDay] = $62225008020f0a13$var$ERA_START_DATES[idx];
date.month = Math.max(startMonth, date.month);
if (date.month === startMonth) date.day = Math.max(startDay, date.day);
}
}
getEras() {
return $62225008020f0a13$var$ERA_NAMES;
}
getYearsInEra(date) {
// Get the number of years in the era, taking into account the date's month and day fields.
let era = $62225008020f0a13$var$ERA_NAMES.indexOf(date.era);
let cur = $62225008020f0a13$var$ERA_START_DATES[era];
let next = $62225008020f0a13$var$ERA_START_DATES[era + 1];
if (next == null) // 9999 gregorian is the maximum year allowed.
return 9999 - cur[0] + 1;
let years = next[0] - cur[0];
if (date.month < next[1] || date.month === next[1] && date.day < next[2]) years++;
return years;
}
getDaysInMonth(date) {
return super.getDaysInMonth($62225008020f0a13$var$toGregorian(date));
}
getMinimumMonthInYear(date) {
let start = $62225008020f0a13$var$getMinimums(date);
return start ? start[1] : 1;
}
getMinimumDayInMonth(date) {
let start = $62225008020f0a13$var$getMinimums(date);
return start && date.month === start[1] ? start[2] : 1;
}
constructor(...args){
super(...args), this.identifier = 'japanese';
}
}
function $62225008020f0a13$var$getMinimums(date) {
if (date.year === 1) {
let idx = $62225008020f0a13$var$ERA_NAMES.indexOf(date.era);
return $62225008020f0a13$var$ERA_START_DATES[idx];
}
}
export {$62225008020f0a13$export$b746ab2b60cdffbf as JapaneseCalendar};
//# sourceMappingURL=JapaneseCalendar.module.js.map
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