runtime/NativeErrorConstructor.h

   1 /*
   2  *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
   3  *  Copyright (C) 2008 Apple Inc. All rights reserved.
   4  *
   5  *  This library is free software; you can redistribute it and/or
   6  *  modify it under the terms of the GNU Lesser General Public
   7  *  License as published by the Free Software Foundation; either
   8  *  version 2 of the License, or (at your option) any later version.
   9  *
  10  *  This library is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  *  Lesser General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU Lesser General Public
  16  *  License along with this library; if not, write to the Free Software
  17  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18  *
  19  */
  20
  21 #ifndef NativeErrorConstructor_h
  22 #define NativeErrorConstructor_h
  23
  24 #include "InternalFunction.h"
  25 #include "NativeErrorPrototype.h"
  26
  27 namespace JSC {
  28
  29     class ErrorInstance;
  30     class FunctionPrototype;
  31     class NativeErrorPrototype;
  32
  33     class NativeErrorConstructor : public InternalFunction {
  34     public:
  35         typedef InternalFunction Base;
  36
  37         static NativeErrorConstructor* create(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, Structure* prototypeStructure, const UString& name)
  38         {
  39             NativeErrorConstructor* constructor = new (NotNull, allocateCell<NativeErrorConstructor>(*exec->heap())) NativeErrorConstructor(globalObject, structure);
  40             constructor->finishCreation(exec, globalObject, prototypeStructure, name);
  41             return constructor;
  42         }
  43
  44         static const ClassInfo s_info;
  45
  46         static Structure* createStructure(JSGlobalData& globalData, JSGlobalObject* globalObject, JSValue prototype)
  47         {
  48             return Structure::create(globalData, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), &s_info);
  49         }
  50
  51         Structure* errorStructure() { return m_errorStructure.get(); }
  52
  53     protected:
  54         void finishCreation(ExecState* exec, JSGlobalObject* globalObject, Structure* prototypeStructure, const UString& name)
  55         {
  56             Base::finishCreation(exec->globalData(), Identifier(exec, name));
  57             ASSERT(inherits(&s_info));
  58
  59             NativeErrorPrototype* prototype = NativeErrorPrototype::create(exec, globalObject, prototypeStructure, name, this);
  60
  61             putDirect(exec->globalData(), exec->propertyNames().length, jsNumber(1), DontDelete | ReadOnly | DontEnum); // ECMA 15.11.7.5
  62             putDirect(exec->globalData(), exec->propertyNames().prototype, prototype, DontDelete | ReadOnly | DontEnum);
  63             m_errorStructure.set(exec->globalData(), this, ErrorInstance::createStructure(exec->globalData(), globalObject, prototype));
  64             ASSERT(m_errorStructure);
  65             ASSERT(m_errorStructure->isObject());
  66         }
  67
  68     private:
  69         NativeErrorConstructor(JSGlobalObject*, Structure*);
  70         static const unsigned StructureFlags = OverridesVisitChildren | InternalFunction::StructureFlags;
  71         static ConstructType getConstructData(JSCell*, ConstructData&);
  72         static CallType getCallData(JSCell*, CallData&);
  73         static void visitChildren(JSCell*, SlotVisitor&);
  74
  75         WriteBarrier<Structure> m_errorStructure;
  76     };
  77
  78 } // namespace JSC
  79
  80 #endif // NativeErrorConstructor_h