runtime/InternalFunction.cpp

   1 /*
   2  *  Copyright (C) 1999-2002 Harri Porten (porten@kde.org)
   3  *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
   4  *  Copyright (C) 2004, 2007, 2008 Apple Inc. All rights reserved.
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Library General Public
   8  *  License as published by the Free Software Foundation; either
   9  *  version 2 of the License, or (at your option) any later version.
  10  *
  11  *  This library is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  *  Library General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Library General Public License
  17  *  along with this library; see the file COPYING.LIB.  If not, write to
  18  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  *  Boston, MA 02110-1301, USA.
  20  *
  21  */
  22
  23 #include "config.h"
  24 #include "InternalFunction.h"
  25
  26 #include "FunctionPrototype.h"
  27 #include "JSGlobalObject.h"
  28 #include "JSString.h"
  29
  30 namespace JSC {
  31
  32 ASSERT_CLASS_FITS_IN_CELL(InternalFunction);
  33 ASSERT_HAS_TRIVIAL_DESTRUCTOR(InternalFunction);
  34
  35 const ClassInfo InternalFunction::s_info = { "Function", &JSNonFinalObject::s_info, 0, 0, CREATE_METHOD_TABLE(InternalFunction) };
  36
  37 InternalFunction::InternalFunction(JSGlobalObject* globalObject, Structure* structure)
  38     : JSNonFinalObject(globalObject->globalData(), structure)
  39 {
  40 }
  41
  42 void InternalFunction::finishCreation(JSGlobalData& globalData, const Identifier& name)
  43 {
  44     Base::finishCreation(globalData);
  45     ASSERT(inherits(&s_info));
  46     ASSERT(methodTable()->getCallData != InternalFunction::s_info.methodTable.getCallData);
  47     putDirect(globalData, globalData.propertyNames->name, jsString(&globalData, name.isNull() ? "" : name.ustring()), DontDelete | ReadOnly | DontEnum);
  48 }
  49
  50 const UString& InternalFunction::name(ExecState* exec)
  51 {
  52     return asString(getDirect(exec->globalData(), exec->globalData().propertyNames->name))->tryGetValue();
  53 }
  54
  55 const UString InternalFunction::displayName(ExecState* exec)
  56 {
  57     JSValue displayName = getDirect(exec->globalData(), exec->globalData().propertyNames->displayName);
  58
  59     if (displayName && isJSString(displayName))
  60         return asString(displayName)->tryGetValue();
  61
  62     return UString();
  63 }
  64
  65 CallType InternalFunction::getCallData(JSCell*, CallData&)
  66 {
  67     ASSERT_NOT_REACHED();
  68     return CallTypeNone;
  69 }
  70
  71 const UString InternalFunction::calculatedDisplayName(ExecState* exec)
  72 {
  73     const UString explicitName = displayName(exec);
  74
  75     if (!explicitName.isEmpty())
  76         return explicitName;
  77
  78     return name(exec);
  79 }
  80
  81 } // namespace JSC