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/*
* Copyright (C) 1999-2000,2003 Harri Porten (porten@kde.org)
* Copyright (C) 2007, 2008, 2011, 2015-2016 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 "NumberConstructor.h"
#include "Lookup.h"
#include "NumberObject.h"
#include "NumberPrototype.h"
#include "JSCInlines.h"
#include "JSGlobalObjectFunctions.h"
#include "StructureInlines.h"
namespace JSC {
static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsInteger(ExecState*);
static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsSafeInteger(ExecState*);
} // namespace JSC
#include "NumberConstructor.lut.h"
namespace JSC {
STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(NumberConstructor);
const ClassInfo NumberConstructor::s_info = { "Function", &InternalFunction::s_info, &numberConstructorTable, CREATE_METHOD_TABLE(NumberConstructor) };
/* Source for NumberConstructor.lut.h
@begin numberConstructorTable
isFinite JSBuiltin DontEnum|Function 1
isInteger numberConstructorFuncIsInteger DontEnum|Function 1
isNaN JSBuiltin DontEnum|Function 1
isSafeInteger numberConstructorFuncIsSafeInteger DontEnum|Function 1
parseFloat globalFuncParseFloat DontEnum|Function 1
@end
*/
NumberConstructor::NumberConstructor(VM& vm, Structure* structure)
: InternalFunction(vm, structure)
{
}
void NumberConstructor::finishCreation(VM& vm, NumberPrototype* numberPrototype)
{
Base::finishCreation(vm, NumberPrototype::info()->className);
ASSERT(inherits(vm, info()));
// Number.Prototype
putDirectWithoutTransition(vm, vm.propertyNames->prototype, numberPrototype, DontEnum | DontDelete | ReadOnly);
// no. of arguments for constructor
putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), ReadOnly | DontEnum | DontDelete);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "EPSILON"), jsDoubleNumber(std::numeric_limits<double>::epsilon()), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MAX_VALUE"), jsDoubleNumber(1.7976931348623157E+308), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MIN_VALUE"), jsDoubleNumber(5E-324), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MAX_SAFE_INTEGER"), jsDoubleNumber(maxSafeInteger()), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MIN_SAFE_INTEGER"), jsDoubleNumber(minSafeInteger()), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "NEGATIVE_INFINITY"), jsDoubleNumber(-std::numeric_limits<double>::infinity()), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "POSITIVE_INFINITY"), jsDoubleNumber(std::numeric_limits<double>::infinity()), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "NaN"), jsNaN(), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "parseInt"), numberPrototype->globalObject()->parseIntFunction(), DontEnum);
}
// ECMA 15.7.1
static EncodedJSValue JSC_HOST_CALL constructWithNumberConstructor(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
double n = exec->argumentCount() ? exec->uncheckedArgument(0).toNumber(exec) : 0;
RETURN_IF_EXCEPTION(scope, encodedJSValue());
Structure* structure = InternalFunction::createSubclassStructure(exec, exec->newTarget(), exec->lexicalGlobalObject()->numberObjectStructure());
RETURN_IF_EXCEPTION(scope, encodedJSValue());
NumberObject* object = NumberObject::create(vm, structure);
object->setInternalValue(vm, jsNumber(n));
return JSValue::encode(object);
}
ConstructType NumberConstructor::getConstructData(JSCell*, ConstructData& constructData)
{
constructData.native.function = constructWithNumberConstructor;
return ConstructType::Host;
}
// ECMA 15.7.2
static EncodedJSValue JSC_HOST_CALL callNumberConstructor(ExecState* exec)
{
return JSValue::encode(jsNumber(!exec->argumentCount() ? 0 : exec->uncheckedArgument(0).toNumber(exec)));
}
CallType NumberConstructor::getCallData(JSCell*, CallData& callData)
{
callData.native.function = callNumberConstructor;
return CallType::Host;
}
// ECMA-262 20.1.2.3
static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsInteger(ExecState* exec)
{
JSValue argument = exec->argument(0);
bool isInteger;
if (argument.isInt32())
isInteger = true;
else if (!argument.isDouble())
isInteger = false;
else {
double number = argument.asDouble();
isInteger = std::isfinite(number) && trunc(number) == number;
}
return JSValue::encode(jsBoolean(isInteger));
}
// ECMA-262 20.1.2.5
static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsSafeInteger(ExecState* exec)
{
JSValue argument = exec->argument(0);
bool isInteger;
if (argument.isInt32())
isInteger = true;
else if (!argument.isDouble())
isInteger = false;
else {
double number = argument.asDouble();
isInteger = trunc(number) == number && std::abs(number) <= 9007199254740991.0;
}
return JSValue::encode(jsBoolean(isInteger));
}
} // namespace JSC
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