mirror of https://github.com/nodejs/node.git
107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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*******************************************************************************
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* Copyright (C) 2003-2013, International Business Machines Corporation and *
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* others. All Rights Reserved. *
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*******************************************************************************
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*
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* File BUDDHCAL.CPP
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*
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* Modification History:
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* 05/13/2003 srl copied from gregocal.cpp
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*
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*/
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING
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#include "buddhcal.h"
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#include "gregoimp.h"
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#include "unicode/gregocal.h"
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#include "umutex.h"
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#include <float.h>
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U_NAMESPACE_BEGIN
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UOBJECT_DEFINE_RTTI_IMPLEMENTATION(BuddhistCalendar)
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//static const int32_t kMaxEra = 0; // only 1 era
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static const int32_t kBuddhistEraStart = -543; // 544 BC (Gregorian)
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static const int32_t kGregorianEpoch = 1970; // used as the default value of EXTENDED_YEAR
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BuddhistCalendar::BuddhistCalendar(const Locale& aLocale, UErrorCode& success)
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: GregorianCalendar(aLocale, success)
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{
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setTimeInMillis(getNow(), success); // Call this again now that the vtable is set up properly.
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}
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BuddhistCalendar::~BuddhistCalendar()
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{
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}
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BuddhistCalendar::BuddhistCalendar(const BuddhistCalendar& source)
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: GregorianCalendar(source)
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{
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}
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BuddhistCalendar& BuddhistCalendar::operator= ( const BuddhistCalendar& right)
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{
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GregorianCalendar::operator=(right);
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return *this;
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}
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BuddhistCalendar* BuddhistCalendar::clone() const
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{
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return new BuddhistCalendar(*this);
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}
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const char *BuddhistCalendar::getType() const
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{
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return "buddhist";
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}
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int32_t BuddhistCalendar::handleGetExtendedYear(UErrorCode& status)
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{
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if (U_FAILURE(status)) {
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return 0;
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}
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// EXTENDED_YEAR in BuddhistCalendar is a Gregorian year.
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// The default value of EXTENDED_YEAR is 1970 (Buddhist 2513)
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if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
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return internalGet(UCAL_EXTENDED_YEAR, kGregorianEpoch);
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}
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// extended year is a gregorian year, where 1 = 1AD, 0 = 1BC, -1 = 2BC, etc
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int32_t year = internalGet(UCAL_YEAR, kGregorianEpoch - kBuddhistEraStart);
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if (uprv_add32_overflow(year, kBuddhistEraStart, &year)) {
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status = U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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return year;
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}
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void BuddhistCalendar::handleComputeFields(int32_t julianDay, UErrorCode& status)
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{
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GregorianCalendar::handleComputeFields(julianDay, status);
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int32_t y = internalGet(UCAL_EXTENDED_YEAR) - kBuddhistEraStart;
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internalSet(UCAL_ERA, 0);
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internalSet(UCAL_YEAR, y);
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}
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int32_t BuddhistCalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const
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{
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if(field == UCAL_ERA) {
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return BE;
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}
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return GregorianCalendar::handleGetLimit(field,limitType);
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}
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IMPL_SYSTEM_DEFAULT_CENTURY(BuddhistCalendar, "@calendar=buddhist")
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U_NAMESPACE_END
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#endif
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