JavaScriptCore-903.5.tar.gz

[apple/javascriptcore.git] / runtime / InternalFunction.cpp

/*
 *  Copyright (C) 1999-2002 Harri Porten (porten@kde.org)
 *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
 *  Copyright (C) 2004, 2007, 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 Library 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
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public License
 *  along with this library; see the file COPYING.LIB.  If not, write to
 *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA 02110-1301, USA.
 *
 */

#include "config.h"
#include "InternalFunction.h"

#include "FunctionPrototype.h"
#include "JSGlobalObject.h"
#include "JSString.h"

namespace JSC {

// Ensure the compiler generates a vtable for InternalFunction!
void InternalFunction::vtableAnchor() {}

ASSERT_CLASS_FITS_IN_CELL(InternalFunction);

const ClassInfo InternalFunction::s_info = { "Function", &JSObjectWithGlobalObject::s_info, 0, 0 };

InternalFunction::InternalFunction(VPtrStealingHackType)
    : JSObjectWithGlobalObject(VPtrStealingHack)
{
}

InternalFunction::InternalFunction(JSGlobalData* globalData, JSGlobalObject* globalObject, Structure* structure, const Identifier& name)
    : JSObjectWithGlobalObject(globalObject, structure)
{
    ASSERT(inherits(&s_info));
    putDirect(*globalData, globalData->propertyNames->name, jsString(globalData, name.isNull() ? "" : name.ustring()), DontDelete | ReadOnly | DontEnum);
}

const UString& InternalFunction::name(ExecState* exec)
{
    return asString(getDirect(exec->globalData(), exec->globalData().propertyNames->name))->tryGetValue();
}

const UString InternalFunction::displayName(ExecState* exec)
{
    JSValue displayName = getDirect(exec->globalData(), exec->globalData().propertyNames->displayName);
    
    if (displayName && isJSString(&exec->globalData(), displayName))
        return asString(displayName)->tryGetValue();
    
    return UString();
}

const UString InternalFunction::calculatedDisplayName(ExecState* exec)
{
    const UString explicitName = displayName(exec);
    
    if (!explicitName.isEmpty())
        return explicitName;
    
    return name(exec);
}

} // namespace JSC