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ManualSerialization.cpp
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254 lines (205 loc) · 6.71 KB
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/*
=============================================================================
File: ManualSerialization.cpp
Desc: Manual serialization framework, main source file.
=============================================================================
*/
#include <Base/Base_PCH.h>
#pragma hdrstop
#include <Base/Base.h>
#include <Base/Object/ManualSerialization.h>
enum { DEFAULT_HASH_TABLE_SIZE = 64 };
/*
-----------------------------------------------------------------------------
ArchivePODReader
-----------------------------------------------------------------------------
*/
ArchivePODReader::ArchivePODReader( AStreamReader& stream )
: m_stream( stream )
{
}
//---------------------------------------------------------------------------
ArchivePODReader::~ArchivePODReader()
{
}
//---------------------------------------------------------------------------
void ArchivePODReader::SerializeMemory( void* ptr, size_t size )
{
m_stream.Read( ptr, size );
}
//---------------------------------------------------------------------------
/*
-----------------------------------------------------------------------------
ArchiveReader
-----------------------------------------------------------------------------
*/
ArchiveReader::ArchiveReader( AStreamReader& stream )
: ArchivePODReader( stream )
, m_loaded( DEFAULT_HASH_TABLE_SIZE )
{
// Insert a pairing between the null pointer and zero index.
AObject* nullPointer = nil;
ObjectUid nullPointerID = 0;
m_loaded.Set( nullPointerID, nullPointer );
#if 0
// read header
mxArchiveHeader currHeader;
mxArchiveHeader readHeader;
m_stream >> readHeader;
if( !currHeader.Matches(readHeader) )
{
ptERROR("Incompatible archives, version mismatch!\n");
}
#endif
}
//---------------------------------------------------------------------------
ArchiveReader::~ArchiveReader()
{
}
//---------------------------------------------------------------------------
void ArchiveReader::SerializePointer( AObject *& o )
{
// read object id
ObjectUid uniqueId;
m_stream >> uniqueId;
AObject** existing = m_loaded.Find( uniqueId );
if(PtrToBool( existing ))
{
//DBGOUT("READ OLD ID : %u\n", uniqueId);
// this object has already been registered and deserialized
// NOTE: 'existing' may point to the null pointer.
o = *existing;
}
else
{
// this object hasn't yet been deserialized...
//DBGOUT("READ NEW ID : %u\n", uniqueId);
// read object header
// Get the factory function for the type of object about to be read.
const TypeID typeId = ReadTypeID( m_stream );
mxASSERT(typeId != mxNULL_TYPE_ID);
//DBGOUT("READ TYPE : %s\n", TypeRegistry::Get().FindClassByGuid(typeId)->GetTypeName());
const mxClass * typeInfo = TypeRegistry::Get().FindClassByGuid( typeId );
mxASSERT_PTR(typeInfo);
// create a valid instance
o = typeInfo->CreateInstance();
mxASSERT_PTR(o);
mxASSERT( typeInfo == &o->rttiGetClass() );
// and remember it
m_loaded.Set( uniqueId, o );
// deserialize the object from stream
o->Serialize( *this );
}
}
//---------------------------------------------------------------------------
void ArchiveReader::InsertRootObject( AObject* o )
{
this->InsertObject( o );
}
//---------------------------------------------------------------------------
ObjectUid ArchiveReader::InsertObject( AObject* o )
{
mxASSERT_PTR(o);
const ObjectUid uniqueID = m_loaded.NumEntries();
m_loaded.Set( uniqueID, o );
return uniqueID;
}
/*
-----------------------------------------------------------------------------
ArchivePODWriter
-----------------------------------------------------------------------------
*/
ArchivePODWriter::ArchivePODWriter( AStreamWriter& stream )
: m_stream( stream )
{
}
//---------------------------------------------------------------------------
ArchivePODWriter::~ArchivePODWriter()
{
}
//---------------------------------------------------------------------------
void ArchivePODWriter::SerializeMemory( void* ptr, size_t size )
{
m_stream.Write( ptr, size );
}
//---------------------------------------------------------------------------
/*
-----------------------------------------------------------------------------
ArchiveWriter
-----------------------------------------------------------------------------
*/
ArchiveWriter::ArchiveWriter( AStreamWriter& stream )
: Super( stream )
, m_registered( DEFAULT_HASH_TABLE_SIZE )
{
// Insert a pairing between the null pointer and zero index.
AObject* nullPointer = nil;
ObjectUid nullPointerID = 0;
m_registered.Set( nullPointer, nullPointerID );
#if 0
// write header
mxArchiveHeader header;
m_stream << header;
#endif
}
//---------------------------------------------------------------------------
ArchiveWriter::~ArchiveWriter()
{
}
//---------------------------------------------------------------------------
void ArchiveWriter::SerializePointer( AObject *& o )
{
// An object can be serialized only once.
if( ObjectUid* registeredID = m_registered.Find( o ) )
{
// this object has already been registered and serialized
//DBGOUT("WRITE OLD ID : %u\n", *registeredID);
// write this object's unique id
m_stream << *registeredID;
}
else
{
// this object hasn't yet been registered
// null pointer is already registered
//mxASSERT_PTR(o);
// generate a new object id and remember it
const ObjectUid uniqueID = this->InsertObject( o );
//DBGOUT("WRITE NEW ID : %u\n", uniqueID);
// Write the unique identifier for the object to stream.
// This is used during loading and linking.
m_stream << uniqueID;
// Write the type info for factory function lookup during Load.
WriteTypeID( m_stream, o->rttiGetTypeID() );
//DBGOUT("WRITE TYPE : %s\n", TypeRegistry::Get().FindClassByGuid(o->rttiGetTypeID())->GetTypeName());
// write object header
//o->rttiGetClass().PreSave( m_stream, o );
// serialize the object to stream
o->Serialize( *this );
}
}
//---------------------------------------------------------------------------
void ArchiveWriter::InsertRootObject( AObject* o )
{
this->InsertObject( o );
}
//---------------------------------------------------------------------------
ObjectUid ArchiveWriter::InsertObject( AObject* o )
{
mxASSERT_PTR(o);
const ObjectUid uniqueID = m_registered.NumEntries();
m_registered.Set( o, uniqueID );
return uniqueID;
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
/*
-----------------------------------------------------------------------------
SObjectPtr
-----------------------------------------------------------------------------
*/
mxDEFINE_CLASS( SObjectPtr );
mxBEGIN_REFLECTION( SObjectPtr )
mxMEMBER_FIELD( o ),
mxEND_REFLECTION
//--------------------------------------------------------------//
// End Of File. //
//--------------------------------------------------------------//