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/*
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
* Copyright (C) 2008 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 "ObjectConstructor.h"
#include "Error.h"
#include "JSFunction.h"
#include "JSGlobalObject.h"
#include "ObjectPrototype.h"
#include "PrototypeFunction.h"
namespace JSC {
ASSERT_CLASS_FITS_IN_CELL(ObjectConstructor);
static JSValue JSC_HOST_CALL objectConstructorGetPrototypeOf(ExecState*, JSObject*, JSValue, const ArgList&);
ObjectConstructor::ObjectConstructor(ExecState* exec, PassRefPtr<Structure> structure, ObjectPrototype* objectPrototype, Structure* prototypeFunctionStructure)
: InternalFunction(&exec->globalData(), structure, Identifier(exec, "Object"))
{
// ECMA 15.2.3.1
putDirectWithoutTransition(exec->propertyNames().prototype, objectPrototype, DontEnum | DontDelete | ReadOnly);
// no. of arguments for constructor
putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 1), ReadOnly | DontEnum | DontDelete);
putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 1, exec->propertyNames().getPrototypeOf, objectConstructorGetPrototypeOf), DontEnum);
}
// ECMA 15.2.2
static ALWAYS_INLINE JSObject* constructObject(ExecState* exec, const ArgList& args)
{
JSValue arg = args.at(0);
if (arg.isUndefinedOrNull())
return new (exec) JSObject(exec->lexicalGlobalObject()->emptyObjectStructure());
return arg.toObject(exec);
}
static JSObject* constructWithObjectConstructor(ExecState* exec, JSObject*, const ArgList& args)
{
return constructObject(exec, args);
}
ConstructType ObjectConstructor::getConstructData(ConstructData& constructData)
{
constructData.native.function = constructWithObjectConstructor;
return ConstructTypeHost;
}
static JSValue JSC_HOST_CALL callObjectConstructor(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
return constructObject(exec, args);
}
CallType ObjectConstructor::getCallData(CallData& callData)
{
callData.native.function = callObjectConstructor;
return CallTypeHost;
}
JSValue JSC_HOST_CALL objectConstructorGetPrototypeOf(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
if (!args.at(0).isObject())
return throwError(exec, TypeError, "Requested prototype of a value that is not an object.");
return asObject(args.at(0))->prototype();
}
} // namespace JSC
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