#include "config.h"
#include "DateInstance.h"
#include "DateMath.h"
#include <math.h>
#include <wtf/MathExtras.h>
namespace JSC {
struct DateInstance::Cache {
double m_gregorianDateTimeCachedForMS;
GregorianDateTime m_cachedGregorianDateTime;
double m_gregorianDateTimeUTCCachedForMS;
GregorianDateTime m_cachedGregorianDateTimeUTC;
};
const ClassInfo DateInstance::info = {"Date", 0, 0, 0};
DateInstance::DateInstance(PassRefPtr<Structure> structure)
: JSWrapperObject(structure)
, m_cache(0)
{
}
DateInstance::~DateInstance()
{
delete m_cache;
}
void DateInstance::msToGregorianDateTime(double milli, bool outputIsUTC, GregorianDateTime& t) const
{
if (!m_cache) {
m_cache = new Cache;
m_cache->m_gregorianDateTimeCachedForMS = NaN;
m_cache->m_gregorianDateTimeUTCCachedForMS = NaN;
}
if (outputIsUTC) {
if (m_cache->m_gregorianDateTimeUTCCachedForMS != milli) {
JSC::msToGregorianDateTime(milli, true, m_cache->m_cachedGregorianDateTimeUTC);
m_cache->m_gregorianDateTimeUTCCachedForMS = milli;
}
t.copyFrom(m_cache->m_cachedGregorianDateTimeUTC);
} else {
if (m_cache->m_gregorianDateTimeCachedForMS != milli) {
JSC::msToGregorianDateTime(milli, false, m_cache->m_cachedGregorianDateTime);
m_cache->m_gregorianDateTimeCachedForMS = milli;
}
t.copyFrom(m_cache->m_cachedGregorianDateTime);
}
}
bool DateInstance::getTime(GregorianDateTime& t, int& offset) const
{
double milli = internalNumber();
if (isnan(milli))
return false;
msToGregorianDateTime(milli, false, t);
offset = gmtoffset(t);
return true;
}
bool DateInstance::getUTCTime(GregorianDateTime& t) const
{
double milli = internalNumber();
if (isnan(milli))
return false;
msToGregorianDateTime(milli, true, t);
return true;
}
bool DateInstance::getTime(double& milli, int& offset) const
{
milli = internalNumber();
if (isnan(milli))
return false;
GregorianDateTime t;
msToGregorianDateTime(milli, false, t);
offset = gmtoffset(t);
return true;
}
bool DateInstance::getUTCTime(double& milli) const
{
milli = internalNumber();
if (isnan(milli))
return false;
return true;
}
}