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/*
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
* Copyright (C) 2004-2020 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*
*/
#include "config.h"
#include "DateConstructor.h"
#include "DateConversion.h"
#include "DateInstance.h"
#include "DatePrototype.h"
#include "JSCInlines.h"
#include "JSDateMath.h"
namespace JSC {
static JSC_DECLARE_HOST_FUNCTION(dateParse);
static JSC_DECLARE_HOST_FUNCTION(dateUTC);
static JSC_DECLARE_HOST_FUNCTION(dateNow);
}
#include "DateConstructor.lut.h"
namespace JSC {
const ClassInfo DateConstructor::s_info = { "Function", &InternalFunction::s_info, &dateConstructorTable, nullptr, CREATE_METHOD_TABLE(DateConstructor) };
/* Source for DateConstructor.lut.h
@begin dateConstructorTable
parse dateParse DontEnum|Function 1
UTC dateUTC DontEnum|Function 7
now dateNow DontEnum|Function 0
@end
*/
STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(DateConstructor);
static JSC_DECLARE_HOST_FUNCTION(callDate);
static JSC_DECLARE_HOST_FUNCTION(constructWithDateConstructor);
DateConstructor::DateConstructor(VM& vm, Structure* structure)
: InternalFunction(vm, structure, callDate, constructWithDateConstructor)
{
}
void DateConstructor::finishCreation(VM& vm, DatePrototype* datePrototype)
{
Base::finishCreation(vm, 7, vm.propertyNames->Date.string(), PropertyAdditionMode::WithoutStructureTransition);
putDirectWithoutTransition(vm, vm.propertyNames->prototype, datePrototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
}
static double millisecondsFromComponents(JSGlobalObject* globalObject, const ArgList& args, WTF::TimeType timeType)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
// Initialize doubleArguments with default values.
double doubleArguments[7] {
0, 0, 1, 0, 0, 0, 0
};
unsigned numberOfUsedArguments = std::max(std::min<unsigned>(7U, args.size()), 1U);
for (unsigned i = 0; i < numberOfUsedArguments; ++i) {
doubleArguments[i] = args.at(i).toNumber(globalObject);
RETURN_IF_EXCEPTION(scope, 0);
}
for (unsigned i = 0; i < numberOfUsedArguments; ++i) {
if (!std::isfinite(doubleArguments[i]) || (doubleArguments[i] > INT_MAX) || (doubleArguments[i] < INT_MIN))
return PNaN;
}
GregorianDateTime t;
int year = JSC::toInt32(doubleArguments[0]);
t.setYear((year >= 0 && year <= 99) ? (year + 1900) : year);
t.setMonth(JSC::toInt32(doubleArguments[1]));
t.setMonthDay(JSC::toInt32(doubleArguments[2]));
t.setHour(JSC::toInt32(doubleArguments[3]));
t.setMinute(JSC::toInt32(doubleArguments[4]));
t.setSecond(JSC::toInt32(doubleArguments[5]));
t.setIsDST(-1);
return vm.dateCache.gregorianDateTimeToMS(t, doubleArguments[6], timeType);
}
// ECMA 15.9.3
JSObject* constructDate(JSGlobalObject* globalObject, JSValue newTarget, const ArgList& args)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
int numArgs = args.size();
double value;
if (numArgs == 0) // new Date() ECMA 15.9.3.3
value = jsCurrentTime();
else if (numArgs == 1) {
JSValue arg0 = args.at(0);
if (auto* dateInstance = jsDynamicCast<DateInstance*>(vm, arg0))
value = dateInstance->internalNumber();
else {
JSValue primitive = arg0.toPrimitive(globalObject);
RETURN_IF_EXCEPTION(scope, nullptr);
if (primitive.isString()) {
String primitiveString = asString(primitive)->value(globalObject);
RETURN_IF_EXCEPTION(scope, nullptr);
value = vm.dateCache.parseDate(globalObject, vm, primitiveString);
RETURN_IF_EXCEPTION(scope, nullptr);
} else
value = primitive.toNumber(globalObject);
}
} else
value = millisecondsFromComponents(globalObject, args, WTF::LocalTime);
RETURN_IF_EXCEPTION(scope, nullptr);
Structure* dateStructure = nullptr;
if (!newTarget)
dateStructure = globalObject->dateStructure();
else {
dateStructure = JSC_GET_DERIVED_STRUCTURE(vm, dateStructure, asObject(newTarget), globalObject->dateConstructor());
RETURN_IF_EXCEPTION(scope, nullptr);
}
return DateInstance::create(vm, dateStructure, value);
}
JSC_DEFINE_HOST_FUNCTION(constructWithDateConstructor, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
ArgList args(callFrame);
return JSValue::encode(constructDate(globalObject, callFrame->newTarget(), args));
}
// ECMA 15.9.2
JSC_DEFINE_HOST_FUNCTION(callDate, (JSGlobalObject* globalObject, CallFrame*))
{
VM& vm = globalObject->vm();
GregorianDateTime ts;
vm.dateCache.msToGregorianDateTime(WallTime::now().secondsSinceEpoch().milliseconds(), WTF::LocalTime, ts);
return JSValue::encode(jsNontrivialString(vm, formatDateTime(ts, DateTimeFormatDateAndTime, false)));
}
JSC_DEFINE_HOST_FUNCTION(dateParse, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
String dateStr = callFrame->argument(0).toWTFString(globalObject);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
RELEASE_AND_RETURN(scope, JSValue::encode(jsNumber(vm.dateCache.parseDate(globalObject, vm, dateStr))));
}
JSValue dateNowImpl()
{
return jsNumber(jsCurrentTime());
}
JSC_DEFINE_HOST_FUNCTION(dateNow, (JSGlobalObject*, CallFrame*))
{
return JSValue::encode(jsNumber(jsCurrentTime()));
}
JSC_DEFINE_HOST_FUNCTION(dateUTC, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
double ms = millisecondsFromComponents(globalObject, ArgList(callFrame), WTF::UTCTime);
return JSValue::encode(jsNumber(timeClip(ms)));
}
} // namespace JSC
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