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/*
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
* Copyright (C) 2008-2019 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
*
*/
#pragma once
#include "InternalFunction.h"
#include "JSGlobalObject.h"
#include "ObjectPrototype.h"
namespace JSC {
EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyDescriptor(JSGlobalObject*, CallFrame*);
EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyDescriptors(JSGlobalObject*, CallFrame*);
EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertySymbols(JSGlobalObject*, CallFrame*);
EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyNames(JSGlobalObject*, CallFrame*);
EncodedJSValue JSC_HOST_CALL objectConstructorKeys(JSGlobalObject*, CallFrame*);
class ObjectPrototype;
class ObjectConstructor final : public InternalFunction {
public:
typedef InternalFunction Base;
static constexpr unsigned StructureFlags = Base::StructureFlags | HasStaticPropertyTable;
static ObjectConstructor* create(VM& vm, JSGlobalObject* globalObject, Structure* structure, ObjectPrototype* objectPrototype)
{
ObjectConstructor* constructor = new (NotNull, allocateCell<ObjectConstructor>(vm.heap)) ObjectConstructor(vm, structure);
constructor->finishCreation(vm, globalObject, objectPrototype);
return constructor;
}
DECLARE_INFO;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(InternalFunctionType, StructureFlags), info());
}
protected:
void finishCreation(VM&, JSGlobalObject*, ObjectPrototype*);
private:
ObjectConstructor(VM&, Structure*);
};
inline JSFinalObject* constructEmptyObject(ExecState* exec, Structure* structure)
{
return JSFinalObject::create(exec, structure);
}
inline JSFinalObject* constructEmptyObject(ExecState* exec, JSObject* prototype, unsigned inlineCapacity)
{
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
StructureCache& structureCache = globalObject->vm().structureCache;
Structure* structure = structureCache.emptyObjectStructureForPrototype(globalObject, prototype, inlineCapacity);
return constructEmptyObject(exec, structure);
}
inline JSFinalObject* constructEmptyObject(ExecState* exec, JSObject* prototype)
{
return constructEmptyObject(exec, prototype, JSFinalObject::defaultInlineCapacity());
}
inline JSFinalObject* constructEmptyObject(ExecState* exec)
{
return constructEmptyObject(exec, exec->lexicalGlobalObject()->objectStructureForObjectConstructor());
}
inline JSObject* constructObject(ExecState* exec, JSGlobalObject* globalObject, JSValue arg)
{
if (arg.isUndefinedOrNull())
return constructEmptyObject(exec, globalObject->objectPrototype());
return arg.toObject(exec, globalObject);
}
// Section 6.2.4.4 of the ES6 specification.
// https://tc39.github.io/ecma262/#sec-frompropertydescriptor
inline JSObject* constructObjectFromPropertyDescriptor(ExecState* exec, const PropertyDescriptor& descriptor)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* description = constructEmptyObject(exec);
RETURN_IF_EXCEPTION(scope, nullptr);
if (!descriptor.isAccessorDescriptor()) {
description->putDirect(vm, vm.propertyNames->value, descriptor.value() ? descriptor.value() : jsUndefined(), 0);
description->putDirect(vm, vm.propertyNames->writable, jsBoolean(descriptor.writable()), 0);
} else {
ASSERT(descriptor.getter() || descriptor.setter());
if (descriptor.getter())
description->putDirect(vm, vm.propertyNames->get, descriptor.getter(), 0);
if (descriptor.setter())
description->putDirect(vm, vm.propertyNames->set, descriptor.setter(), 0);
}
description->putDirect(vm, vm.propertyNames->enumerable, jsBoolean(descriptor.enumerable()), 0);
description->putDirect(vm, vm.propertyNames->configurable, jsBoolean(descriptor.configurable()), 0);
return description;
}
JS_EXPORT_PRIVATE JSObject* objectConstructorFreeze(ExecState*, JSObject*);
JS_EXPORT_PRIVATE JSObject* objectConstructorSeal(ExecState*, JSObject*);
JSValue objectConstructorGetOwnPropertyDescriptor(ExecState*, JSObject*, const Identifier&);
JSValue objectConstructorGetOwnPropertyDescriptors(ExecState*, JSObject*);
JSArray* ownPropertyKeys(ExecState*, JSObject*, PropertyNameMode, DontEnumPropertiesMode);
bool toPropertyDescriptor(ExecState*, JSValue, PropertyDescriptor&);
} // namespace JSC