blob: 2e7cb72fd827321d3055ee6ba7839a889d8725db [file] [log] [blame]
/*
* 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, nullptr, CREATE_METHOD_TABLE(NumberConstructor) };
/* Source for NumberConstructor.lut.h
@begin numberConstructorTable
isFinite JSBuiltin DontEnum|Function 1
isNaN JSBuiltin DontEnum|Function 1
isSafeInteger numberConstructorFuncIsSafeInteger DontEnum|Function 1
@end
*/
static EncodedJSValue JSC_HOST_CALL callNumberConstructor(ExecState*);
static EncodedJSValue JSC_HOST_CALL constructNumberConstructor(ExecState*);
NumberConstructor::NumberConstructor(VM& vm, Structure* structure)
: InternalFunction(vm, structure, callNumberConstructor, constructNumberConstructor)
{
}
void NumberConstructor::finishCreation(VM& vm, NumberPrototype* numberPrototype)
{
Base::finishCreation(vm, NumberPrototype::info()->className);
ASSERT(inherits(vm, info()));
JSGlobalObject* globalObject = numberPrototype->globalObject();
putDirectWithoutTransition(vm, vm.propertyNames->prototype, numberPrototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "EPSILON"), jsDoubleNumber(std::numeric_limits<double>::epsilon()), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MAX_VALUE"), jsDoubleNumber(1.7976931348623157E+308), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MIN_VALUE"), jsDoubleNumber(5E-324), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MAX_SAFE_INTEGER"), jsDoubleNumber(maxSafeInteger()), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MIN_SAFE_INTEGER"), jsDoubleNumber(minSafeInteger()), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "NEGATIVE_INFINITY"), jsDoubleNumber(-std::numeric_limits<double>::infinity()), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "POSITIVE_INFINITY"), jsDoubleNumber(std::numeric_limits<double>::infinity()), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, vm.propertyNames->NaN, jsNaN(), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, vm.propertyNames->parseInt, numberPrototype->globalObject()->parseIntFunction(), static_cast<unsigned>(PropertyAttribute::DontEnum));
putDirectWithoutTransition(vm, vm.propertyNames->parseFloat, numberPrototype->globalObject()->parseFloatFunction(), static_cast<unsigned>(PropertyAttribute::DontEnum));
JSC_NATIVE_INTRINSIC_FUNCTION_WITHOUT_TRANSITION(Identifier::fromString(&vm, "isInteger"), numberConstructorFuncIsInteger, static_cast<unsigned>(PropertyAttribute::DontEnum), 1, NumberIsIntegerIntrinsic);
}
// ECMA 15.7.1
static EncodedJSValue JSC_HOST_CALL constructNumberConstructor(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);
}
// ECMA 15.7.2
static EncodedJSValue JSC_HOST_CALL callNumberConstructor(ExecState* exec)
{
return JSValue::encode(jsNumber(!exec->argumentCount() ? 0 : exec->uncheckedArgument(0).toNumber(exec)));
}
// ECMA-262 20.1.2.3
static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsInteger(ExecState* exec)
{
return JSValue::encode(jsBoolean(NumberConstructor::isIntegerImpl(exec->argument(0))));
}
// 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) <= maxSafeInteger();
}
return JSValue::encode(jsBoolean(isInteger));
}
} // namespace JSC