File indexing completed on 2024-12-08 09:42:36

 /* This file is part of the KDE libraries
     Copyright (C) 2005, 2006 Ian Reinhart Geiser <geiseri@kde.org>
     Copyright (C) 2005, 2006 Matt Broadstone <mbroadst@gmail.com>
     Copyright (C) 2005, 2006 Richard J. Moore <rich@kde.org>
     Copyright (C) 2005, 2006 Erik L. Bunce <kde@bunce.us>
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
 
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
 */
 
 #ifndef POINTER_H
 #define POINTER_H
 
 #include <algorithm>
 #include <typeinfo>
 #include <QVariant>
 
 namespace KJSEmbed
 {
 
 struct PointerBase {
 public:
     virtual ~PointerBase()
     {
         ;
     }
     virtual void cleanup() = 0;
     virtual const std::type_info &type() const = 0;
     virtual void *voidStar() = 0;
 };
 
 template<typename ValueType>
 struct Pointer : public PointerBase {
 public:
     Pointer(ValueType *value) : ptr(value)
     {
 //         qDebug("new pointer %s %0x", typeid(ValueType).name(), value);
     }
     ~Pointer() override
     {
 
     }
     void cleanup() override
     {
 //         qDebug("delete pointer %s %0x", typeid(ValueType).name(), ptr );
         delete ptr;
         ptr = nullptr;
     }
     const std::type_info &type() const override
     {
         return typeid(ValueType);
     }
 
     void *voidStar() override
     {
         return (void *)ptr;
     }
 
     ValueType *ptr;
 };
 
 template<typename ValueType>
 struct Value : public PointerBase {
 public:
     Value(ValueType val) : value(val)
     {
         //qDebug("new value %s", typeid(ValueType).name());
     }
     ~Value() override
     {
         //qDebug("delete value");
     }
 
     void cleanup() override
     {
 
     }
 
     const std::type_info &type() const override
     {
         return typeid(ValueType);
     }
 
     void *voidStar() override
     {
         return (void *)&value;
     }
 
     ValueType value;
 };
 
 struct NullPtr : public PointerBase {
     NullPtr() : ptr(nullptr)
     {
         ;
     }
     ~NullPtr() override
     {
         ;
     }
     void cleanup() override
     {
         ;
     }
 
     const std::type_info &type() const override
     {
         return typeid(NullPtr);
     }
 
     void *voidStar() override
     {
         return &ptr;
     }
 
     void *ptr;
 
 };
 
 template<typename ValueType>
 ValueType *pointer_cast(PointerBase *pointer)
 {
 //    qDebug("pointers %s %s", typeid(ValueType).name(), pointer->type().name() );
     if (typeid(ValueType) != pointer->type()) {
         return nullptr;
     }
     Pointer<ValueType> *upcast = static_cast< Pointer<ValueType> *>(pointer);
     return upcast->ptr;
 }
 
 }
 
 Q_DECLARE_METATYPE(KJSEmbed::PointerBase *)
 
 #endif