PxSerializer.h

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#ifndef PX_SERIALIZER_H
#define PX_SERIALIZER_H

#include "foundation/PxAssert.h"
#include "foundation/PxAllocatorCallback.h"
#include "common/PxSerialFramework.h"
#include "common/PxCollection.h"
#include "PxFoundation.h"


#if !PX_DOXYGEN
namespace physx
{
#endif

class PxSerializer
{
public:

    /**********************************************************************************************************************/

    
    virtual  const  char*           getConcreteTypeName() const                                                         = 0;

    virtual         void            requiresObjects(PxBase&, PxProcessPxBaseCallback&) const                                    = 0;
    
    virtual         bool            isSubordinate() const                                                               = 0;

    /**********************************************************************************************************************/

    /**********************************************************************************************************************/


    virtual         void            exportExtraData(PxBase&, PxSerializationContext&) const                             = 0;

    virtual         void            exportData(PxBase&, PxSerializationContext&) const                                  = 0;

    virtual         void            registerReferences(PxBase& obj, PxSerializationContext& s) const                    = 0;

    virtual         size_t          getClassSize() const                                                                = 0;

    virtual         PxBase*         createObject(PxU8*& address, PxDeserializationContext& context) const   = 0; 

    /**********************************************************************************************************************/
    virtual ~PxSerializer() {}
};


template<class T>
class PxSerializerDefaultAdapter : public PxSerializer
{
public:

    /************************************************************************************************/


    PxSerializerDefaultAdapter(const char* name) : mTypeName(name){}

    virtual const char* getConcreteTypeName() const
    { 
        return mTypeName; 
    }
    
    virtual void requiresObjects(PxBase& obj, PxProcessPxBaseCallback& c) const
    {
        T& t = static_cast<T&>(obj);
        t.requiresObjects(c);
    }

    virtual bool isSubordinate() const
    {
        return false;
    }
        
    /************************************************************************************************/


    // object methods

    virtual void exportExtraData(PxBase& obj, PxSerializationContext& s) const
    { 
        T& t = static_cast<T&>(obj);
        t.exportExtraData(s);
    }

    virtual void exportData(PxBase& obj, PxSerializationContext& s) const
    {
        PxAllocatorCallback& allocator = PxGetFoundation().getAllocatorCallback();
        T* copy = reinterpret_cast<T*>(allocator.allocate(sizeof(T), "TmpAllocExportData", __FILE__, __LINE__));
        PxMemCopy(copy, &obj, sizeof(T));
        copy->preExportDataReset();
        s.writeData(copy, sizeof(T));
        allocator.deallocate(copy);
    }

    virtual void registerReferences(PxBase& obj, PxSerializationContext& s) const
    {
        T& t = static_cast<T&>(obj);

        s.registerReference(obj, PX_SERIAL_REF_KIND_PXBASE, size_t(&obj));

        struct RequiresCallback : public PxProcessPxBaseCallback
        {
            RequiresCallback(PxSerializationContext& c) : context(c) {}
            RequiresCallback& operator=(RequiresCallback&) { PX_ASSERT(0); return *this; }
            void process(physx::PxBase& base)
            {               
                context.registerReference(base, PX_SERIAL_REF_KIND_PXBASE, size_t(&base));
            }
            PxSerializationContext& context;
        };

        RequiresCallback callback(s);
        t.requiresObjects(callback);
    }

    // class methods

    virtual size_t getClassSize() const
    {
        return sizeof(T);
    }

    virtual PxBase* createObject(PxU8*& address, PxDeserializationContext& context) const
    {
        return T::createObject(address, context);
    }


    /************************************************************************************************/

private:
    const char*    mTypeName;   
};

#define PX_NEW_SERIALIZER_ADAPTER(x) \
    *new( PxGetFoundation().getAllocatorCallback().allocate(sizeof(PxSerializerDefaultAdapter<x>), \
    "PxSerializerDefaultAdapter",  __FILE__, __LINE__ )) PxSerializerDefaultAdapter<x>(#x)

#define PX_DELETE_SERIALIZER_ADAPTER(x) \
    { PxSerializer* s = x; if (s) { s->~PxSerializer(); PxGetFoundation().getAllocatorCallback().deallocate(s); } }

#if !PX_DOXYGEN
} // namespace physx
#endif

#endif