API/JSCallbackConstructor.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 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 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 JSCallbackConstructor_h
  27 #define JSCallbackConstructor_h
  28
  29 #include "JSObjectRef.h"
  30 #include "runtime/JSDestructibleObject.h"
  31
  32 namespace JSC {
  33
  34 class JSCallbackConstructor : public JSDestructibleObject {
  35 public:
  36     typedef JSDestructibleObject Base;
  37
  38     static JSCallbackConstructor* create(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, JSClassRef classRef, JSObjectCallAsConstructorCallback callback)
  39     {
  40         JSCallbackConstructor* constructor = new (NotNull, allocateCell<JSCallbackConstructor>(*exec->heap())) JSCallbackConstructor(globalObject, structure, classRef, callback);
  41         constructor->finishCreation(globalObject, classRef);
  42         return constructor;
  43     }
  44
  45     ~JSCallbackConstructor();
  46     static void destroy(JSCell*);
  47     JSClassRef classRef() const { return m_class; }
  48     JSObjectCallAsConstructorCallback callback() const { return m_callback; }
  49     DECLARE_INFO;
  50
  51     static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue proto)
  52     {
  53         return Structure::create(vm, globalObject, proto, TypeInfo(ObjectType, StructureFlags), info());
  54     }
  55
  56 protected:
  57     JSCallbackConstructor(JSGlobalObject*, Structure*, JSClassRef, JSObjectCallAsConstructorCallback);
  58     void finishCreation(JSGlobalObject*, JSClassRef);
  59     static const unsigned StructureFlags = ImplementsHasInstance | JSObject::StructureFlags;
  60
  61 private:
  62     friend struct APICallbackFunction;
  63
  64     static ConstructType getConstructData(JSCell*, ConstructData&);
  65
  66     JSObjectCallAsConstructorCallback constructCallback() { return m_callback; }
  67
  68     JSClassRef m_class;
  69     JSObjectCallAsConstructorCallback m_callback;
  70 };
  71
  72 } // namespace JSC
  73
  74 #endif // JSCallbackConstructor_h