//====== Copyright © 1996-2004, Valve Corporation, All rights reserved. =======
//
// Purpose: 
//
//=============================================================================

#ifndef DMXLOADER_H
#define DMXLOADER_H

#ifdef _WIN32
#pragma once
#endif

//-----------------------------------------------------------------------------
// Forward declarations
//-----------------------------------------------------------------------------
class CUtlBuffer;
class CDmxElement;


//-----------------------------------------------------------------------------
// Serialization/Unserialization
//-----------------------------------------------------------------------------
bool SerializeDMX( CUtlBuffer &buf, CDmxElement *pRoot, const char *pFileName = NULL );
bool SerializeDMX( const char *pFileName, const char *pPathID, bool bTextMode, CDmxElement *pRoot );

bool UnserializeDMX( CUtlBuffer &buf, CDmxElement **ppRoot, const char *pFileName = NULL );
bool UnserializeDMX( const char *pFileName, const char *pPathID,  bool bTextMode, CDmxElement **ppRoot );

//-----------------------------------------------------------------------------
// DMX elements/attributes can only be accessed inside a dmx context
//-----------------------------------------------------------------------------
void BeginDMXContext( );
void EndDMXContext( bool bDecommitMemory );
void DecommitDMXMemory();


//-----------------------------------------------------------------------------
// Helper macro
//-----------------------------------------------------------------------------
class CDMXContextHelper
{
public:
	CDMXContextHelper( bool bDecommitMemory ) { m_bDecommitMemory = bDecommitMemory; BeginDMXContext(); }
	~CDMXContextHelper() { EndDMXContext( m_bDecommitMemory ); }

private:
	bool m_bDecommitMemory;
};

#define DECLARE_DMX_CONTEXT( )	CDMXContextHelper __dmxContextHelper( true );
#define DECLARE_DMX_CONTEXT_NODECOMMIT( )	CDMXContextHelper __dmxContextHelper( false );
#define DECLARE_DMX_CONTEXT_DECOMMIT( _decommit )	CDMXContextHelper __dmxContextHelper( _decommit );


//-----------------------------------------------------------------------------
// Used for allocation. All will be freed when we leave the DMX context
//-----------------------------------------------------------------------------
void* DMXAlloc( size_t size );


//-----------------------------------------------------------------------------
// Helper macro
//-----------------------------------------------------------------------------
#define DECLARE_DMX_ALLOCATOR( )												\
	public:																		\
		inline void* operator new( size_t size ) { MEM_ALLOC_CREDIT_( "DMXAlloc" ); return DMXAlloc(size); }   \
		inline void* operator new( size_t size, int nBlockUse, const char *pFileName, int nLine ) { MEM_ALLOC_CREDIT_( "DMXAlloc" ); return DMXAlloc(size); }   \
		inline void  operator delete( void* p ) { }		\
		inline void  operator delete( void* p, int nBlockUse, const char *pFileName, int nLine ) { }   \

#endif // DMXLOADER_H