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 "JSString.h"
  28
  29 namespace JSC {
  30
  31 ASSERT_CLASS_FITS_IN_CELL(InternalFunction);
  32
  33 const ClassInfo InternalFunction::info = { "Function", 0, 0, 0 };
  34
  35 const ClassInfo* InternalFunction::classInfo() const
  36 {
  37     return &info;
  38 }
  39
  40 InternalFunction::InternalFunction(JSGlobalData* globalData, NonNullPassRefPtr<Structure> structure, const Identifier& name)
  41     : JSObject(structure)
  42 {
  43     putDirect(globalData->propertyNames->name, jsString(globalData, name.isNull() ? "" : name.ustring()), DontDelete | ReadOnly | DontEnum);
  44 }
  45
  46 const UString& InternalFunction::name(ExecState* exec)
  47 {
  48     return asString(getDirect(exec->globalData().propertyNames->name))->tryGetValue();
  49 }
  50
  51 const UString InternalFunction::displayName(ExecState* exec)
  52 {
  53     JSValue displayName = getDirect(exec->globalData().propertyNames->displayName);
  54
  55     if (displayName && isJSString(&exec->globalData(), displayName))
  56         return asString(displayName)->tryGetValue();
  57
  58     return UString::null();
  59 }
  60
  61 const UString InternalFunction::calculatedDisplayName(ExecState* exec)
  62 {
  63     const UString explicitName = displayName(exec);
  64
  65     if (!explicitName.isEmpty())
  66         return explicitName;
  67
  68     return name(exec);
  69 }
  70
  71 } // namespace JSC