mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2025-04-17 06:20:04 +00:00
132 lines
6.5 KiB
C++
132 lines
6.5 KiB
C++
/*
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* Copyright (C) 1999-2000,2003 Harri Porten (porten@kde.org)
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* Copyright (C) 2007, 2008, 2011, 2015-2016 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
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* USA
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*
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*/
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#include "config.h"
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#include "NumberConstructor.h"
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#include "Lookup.h"
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#include "NumberObject.h"
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#include "NumberPrototype.h"
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#include "JSCInlines.h"
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#include "JSGlobalObjectFunctions.h"
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#include "StructureInlines.h"
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namespace JSC {
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static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsInteger(ExecState*);
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static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsSafeInteger(ExecState*);
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} // namespace JSC
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#include "NumberConstructor.lut.h"
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namespace JSC {
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STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(NumberConstructor);
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const ClassInfo NumberConstructor::s_info = { "Function", &InternalFunction::s_info, &numberConstructorTable, nullptr, CREATE_METHOD_TABLE(NumberConstructor) };
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/* Source for NumberConstructor.lut.h
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@begin numberConstructorTable
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isFinite JSBuiltin DontEnum|Function 1
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isNaN JSBuiltin DontEnum|Function 1
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isSafeInteger numberConstructorFuncIsSafeInteger DontEnum|Function 1
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@end
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*/
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static EncodedJSValue JSC_HOST_CALL callNumberConstructor(ExecState*);
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static EncodedJSValue JSC_HOST_CALL constructNumberConstructor(ExecState*);
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NumberConstructor::NumberConstructor(VM& vm, Structure* structure)
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: InternalFunction(vm, structure, callNumberConstructor, constructNumberConstructor)
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{
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}
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void NumberConstructor::finishCreation(VM& vm, NumberPrototype* numberPrototype)
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{
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Base::finishCreation(vm, vm.propertyNames->Number.string(), NameVisibility::Visible, NameAdditionMode::WithoutStructureTransition);
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ASSERT(inherits(vm, info()));
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JSGlobalObject* globalObject = numberPrototype->globalObject(vm);
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putDirectWithoutTransition(vm, vm.propertyNames->prototype, numberPrototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
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putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum);
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putDirectWithoutTransition(vm, Identifier::fromString(&vm, "EPSILON"), jsDoubleNumber(std::numeric_limits<double>::epsilon()), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
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putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MAX_VALUE"), jsDoubleNumber(1.7976931348623157E+308), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
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putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MIN_VALUE"), jsDoubleNumber(5E-324), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
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putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MAX_SAFE_INTEGER"), jsDoubleNumber(maxSafeInteger()), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
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putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MIN_SAFE_INTEGER"), jsDoubleNumber(minSafeInteger()), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
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putDirectWithoutTransition(vm, Identifier::fromString(&vm, "NEGATIVE_INFINITY"), jsDoubleNumber(-std::numeric_limits<double>::infinity()), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
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putDirectWithoutTransition(vm, Identifier::fromString(&vm, "POSITIVE_INFINITY"), jsDoubleNumber(std::numeric_limits<double>::infinity()), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
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putDirectWithoutTransition(vm, vm.propertyNames->NaN, jsNaN(), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
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putDirectWithoutTransition(vm, vm.propertyNames->parseInt, numberPrototype->globalObject(vm)->parseIntFunction(), static_cast<unsigned>(PropertyAttribute::DontEnum));
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putDirectWithoutTransition(vm, vm.propertyNames->parseFloat, numberPrototype->globalObject(vm)->parseFloatFunction(), static_cast<unsigned>(PropertyAttribute::DontEnum));
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JSC_NATIVE_INTRINSIC_FUNCTION_WITHOUT_TRANSITION(Identifier::fromString(&vm, "isInteger"), numberConstructorFuncIsInteger, static_cast<unsigned>(PropertyAttribute::DontEnum), 1, NumberIsIntegerIntrinsic);
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}
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// ECMA 15.7.1
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static EncodedJSValue JSC_HOST_CALL constructNumberConstructor(ExecState* exec)
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{
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VM& vm = exec->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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double n = exec->argumentCount() ? exec->uncheckedArgument(0).toNumber(exec) : 0;
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RETURN_IF_EXCEPTION(scope, encodedJSValue());
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Structure* structure = InternalFunction::createSubclassStructure(exec, exec->newTarget(), exec->lexicalGlobalObject()->numberObjectStructure());
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RETURN_IF_EXCEPTION(scope, encodedJSValue());
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NumberObject* object = NumberObject::create(vm, structure);
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object->setInternalValue(vm, jsNumber(n));
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return JSValue::encode(object);
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}
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// ECMA 15.7.2
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static EncodedJSValue JSC_HOST_CALL callNumberConstructor(ExecState* exec)
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{
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return JSValue::encode(jsNumber(!exec->argumentCount() ? 0 : exec->uncheckedArgument(0).toNumber(exec)));
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}
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// ECMA-262 20.1.2.3
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static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsInteger(ExecState* exec)
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{
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return JSValue::encode(jsBoolean(NumberConstructor::isIntegerImpl(exec->argument(0))));
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}
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// ECMA-262 20.1.2.5
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static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsSafeInteger(ExecState* exec)
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{
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JSValue argument = exec->argument(0);
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bool isInteger;
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if (argument.isInt32())
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isInteger = true;
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else if (!argument.isDouble())
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isInteger = false;
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else {
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double number = argument.asDouble();
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isInteger = trunc(number) == number && std::abs(number) <= maxSafeInteger();
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}
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return JSValue::encode(jsBoolean(isInteger));
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}
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} // namespace JSC
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