import { addFormatToken } from '../format/format';
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import { addUnitAlias } from './aliases';
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import { addRegexToken, match1to2, match1to4, match1to6, match2, match4, match6, matchSigned } from '../parse/regex';
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import { addWeekParseToken } from '../parse/token';
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import { weekOfYear } from './week';
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import toInt from '../utils/to-int';
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import { hooks } from '../utils/hooks';
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import { createLocal } from '../create/local';
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// FORMATTING
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addFormatToken(0, ['gg', 2], 0, function () {
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return this.weekYear() % 100;
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});
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addFormatToken(0, ['GG', 2], 0, function () {
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return this.isoWeekYear() % 100;
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});
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function addWeekYearFormatToken (token, getter) {
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addFormatToken(0, [token, token.length], 0, getter);
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}
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addWeekYearFormatToken('gggg', 'weekYear');
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addWeekYearFormatToken('ggggg', 'weekYear');
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addWeekYearFormatToken('GGGG', 'isoWeekYear');
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addWeekYearFormatToken('GGGGG', 'isoWeekYear');
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// ALIASES
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addUnitAlias('weekYear', 'gg');
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addUnitAlias('isoWeekYear', 'GG');
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// PARSING
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addRegexToken('G', matchSigned);
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addRegexToken('g', matchSigned);
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addRegexToken('GG', match1to2, match2);
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addRegexToken('gg', match1to2, match2);
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addRegexToken('GGGG', match1to4, match4);
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addRegexToken('gggg', match1to4, match4);
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addRegexToken('GGGGG', match1to6, match6);
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addRegexToken('ggggg', match1to6, match6);
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addWeekParseToken(['gggg', 'ggggg', 'GGGG', 'GGGGG'], function (input, week, config, token) {
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week[token.substr(0, 2)] = toInt(input);
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});
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addWeekParseToken(['gg', 'GG'], function (input, week, config, token) {
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week[token] = hooks.parseTwoDigitYear(input);
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});
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// HELPERS
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function weeksInYear(year, dow, doy) {
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return weekOfYear(createLocal([year, 11, 31 + dow - doy]), dow, doy).week;
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}
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// MOMENTS
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export function getSetWeekYear (input) {
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var year = weekOfYear(this, this.localeData()._week.dow, this.localeData()._week.doy).year;
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return input == null ? year : this.add((input - year), 'y');
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}
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export function getSetISOWeekYear (input) {
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var year = weekOfYear(this, 1, 4).year;
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return input == null ? year : this.add((input - year), 'y');
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}
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export function getISOWeeksInYear () {
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return weeksInYear(this.year(), 1, 4);
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}
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export function getWeeksInYear () {
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var weekInfo = this.localeData()._week;
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return weeksInYear(this.year(), weekInfo.dow, weekInfo.doy);
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}
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