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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//=============================================================================//
#ifndef VSTDLIB_IKEYVALUESSYSTEM_H
#define VSTDLIB_IKEYVALUESSYSTEM_H
#ifdef _WIN32
#pragma once
#endif
#include "vstdlib/vstdlib.h"
// handle to a KeyValues key name symbol
typedef int HKeySymbol;
#define INVALID_KEY_SYMBOL (-1)
//-----------------------------------------------------------------------------
// Purpose: Interface to shared data repository for KeyValues (included in vgui_controls.lib)
// allows for central data storage point of KeyValues symbol table
//-----------------------------------------------------------------------------
class IKeyValuesSystem
{
public:
// registers the size of the KeyValues in the specified instance
// so it can build a properly sized memory pool for the KeyValues objects
// the sizes will usually never differ but this is for versioning safety
virtual void RegisterSizeofKeyValues(int size) = 0;
// allocates/frees a KeyValues object from the shared mempool
virtual void *AllocKeyValuesMemory(int size) = 0;
virtual void FreeKeyValuesMemory(void *pMem) = 0;
// symbol table access (used for key names)
virtual HKeySymbol GetSymbolForString( const char *name, bool bCreate = true ) = 0;
virtual const char *GetStringForSymbol(HKeySymbol symbol) = 0;
// for debugging, adds KeyValues record into global list so we can track memory leaks
virtual void AddKeyValuesToMemoryLeakList(void *pMem, HKeySymbol name) = 0;
virtual void RemoveKeyValuesFromMemoryLeakList(void *pMem) = 0;
};
VSTDLIB_INTERFACE IKeyValuesSystem *KeyValuesSystem();
// #define KEYVALUESSYSTEM_INTERFACE_VERSION "KeyValuesSystem002"
#endif // VSTDLIB_IKEYVALUESSYSTEM_H
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