//========= Copyright Valve Corporation, All rights reserved. ============//

//

// Purpose:

//

//=============================================================================

#ifndef DMELEMENTHANDLE_H

#define DMELEMENTHANDLE_H

#ifdef _WIN32

#pragma once

#endif

//-----------------------------------------------------------------------------

// handle to an CDmElement

//-----------------------------------------------------------------------------

#define PERFORM_HANDLE_TYPECHECKING 0

#if PERFORM_HANDLE_TYPECHECKING

// this is here to make sure we're being type-safe about element handles

// otherwise, the compiler lets us cast to bool incorrectly

// the other solution would be to redefine DmElementHandle_t s.t. DMELEMENT_HANDLE_INVALID==0

struct DmElementHandle_t

inline bool operator!=( const DmElementHandle_t &h ) const { return handle != h.handle; }

inline bool operator<( const DmElementHandle_t &h ) const { return handle < h.handle; }

// inline operator int() const { return handle; } // if we're okay with implicit int casts, uncomment this method

int handle;

};

const DmElementHandle_t DMELEMENT_HANDLE_INVALID;

#else // PERFORM_HANDLE_TYPECHECKING

enum DmElementHandle_t

{

DMELEMENT_HANDLE_INVALID = 0xffffffff

};

#endif // PERFORM_HANDLE_TYPECHECKING

#endif // DMELEMENTHANDLE_H