runtime/PropertySlot.cpp

   1 /*
   2  *  Copyright (C) 2005, 2008 Apple Inc. All rights reserved.
   3  *
   4  *  This library is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU Library General Public
   6  *  License as published by the Free Software Foundation; either
   7  *  version 2 of the License, or (at your option) any later version.
   8  *
   9  *  This library is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *  Library General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU Library General Public License
  15  *  along with this library; see the file COPYING.LIB.  If not, write to
  16  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  *  Boston, MA 02110-1301, USA.
  18  *
  19  */
  20
  21 #include "config.h"
  22 #include "PropertySlot.h"
  23
  24 #include "JSFunction.h"
  25 #include "JSGlobalObject.h"
  26
  27 namespace JSC {
  28
  29 JSValue PropertySlot::functionGetter(ExecState* exec) const
  30 {
  31     // Prevent getter functions from observing execution if an exception is pending.
  32     if (exec->hadException())
  33         return exec->exception();
  34
  35     CallData callData;
  36     CallType callType = m_data.getterFunc->getCallData(callData);
  37     if (callType == CallTypeHost)
  38         return callData.native.function(exec, m_data.getterFunc, thisValue(), exec->emptyList());
  39     ASSERT(callType == CallTypeJS);
  40     // FIXME: Can this be done more efficiently using the callData?
  41     return asFunction(m_data.getterFunc)->call(exec, thisValue(), exec->emptyList());
  42 }
  43
  44 } // namespace JSC