API/JSCallbackFunction.h

   1 /*
   2  * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef JSCallbackFunction_h
  27 #define JSCallbackFunction_h
  28
  29 #include "InternalFunction.h"
  30 #include "JSObjectRef.h"
  31
  32 namespace JSC {
  33
  34 class JSCallbackFunction : public InternalFunction {
  35 public:
  36     JSCallbackFunction(ExecState*, JSObjectCallAsFunctionCallback, const Identifier& name);
  37
  38     static const ClassInfo info;
  39
  40     // InternalFunction mish-mashes constructor and function behavior -- we should
  41     // refactor the code so this override isn't necessary
  42     static PassRefPtr<Structure> createStructure(JSValue proto)
  43     {
  44         return Structure::create(proto, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount);
  45     }
  46
  47 private:
  48     virtual CallType getCallData(CallData&);
  49     virtual const ClassInfo* classInfo() const { return &info; }
  50
  51     static JSValue JSC_HOST_CALL call(ExecState*, JSObject*, JSValue, const ArgList&);
  52
  53     JSObjectCallAsFunctionCallback m_callback;
  54 };
  55
  56 } // namespace JSC
  57
  58 #endif // JSCallbackFunction_h