/**

  * vim: set ts=4 :

  * =============================================================================

  * SourceMod

  * Copyright (C) 2004-2009 AlliedModders LLC.  All rights reserved.

  * =============================================================================

  *

  * This program is free software; you can redistribute it and/or modify it under

  * the terms of the GNU General Public License, version 3.0, as published by the

  * Free Software Foundation.

  * 

  * This program is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more

  * details.

  *

  * You should have received a copy of the GNU General Public License along with

  * this program.  If not, see <http://www.gnu.org/licenses/>.

  *

  * As a special exception, AlliedModders LLC gives you permission to link the

  * code of this program (as well as its derivative works) to "Half-Life 2," the

  * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software

  * by the Valve Corporation.  You must obey the GNU General Public License in

  * all respects for all other code used.  Additionally, AlliedModders LLC grants

  * this exception to all derivative works.  AlliedModders LLC defines further

  * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),

  * or <http://www.sourcemod.net/license.php>.

  *

  * Version: $Id$

  */

 #ifndef _INCLUDE_SOURCEMOD_NATIVE_INVOKER_H_

 #define _INCLUDE_SOURCEMOD_NATIVE_INVOKER_H_

 #include <sp_vm_api.h>

 #include <INativeInvoker.h>

 #include "common_logic.h"

 using namespace SourceMod;

 using namespace SourcePawn;

 struct ParamInfo

 {

 	int flags;			/* Copy-back flags */

 	bool marked;		/* Whether this is marked as being used */

 	cell_t local_addr;	/* Local address to free */

 	cell_t *phys_addr;	/* Physical address of our copy */

 	cell_t *orig_addr;	/* Original address to copy back to */

 	ucell_t size;		/* Size of array in bytes */

 	struct

 	{

 		bool is_sz;		/* is a string */

 		int sz_flags;	/* has sz flags */

 	} str;

 };

 class NativeInvoker : public INativeInvoker

 {

 public:

 	NativeInvoker();

 	~NativeInvoker();

 public: /* ICallable */

 	int PushCell(cell_t cell);

 	int PushCellByRef(cell_t *cell, int flags=SM_PARAM_COPYBACK);

 	int PushFloat(float number);

 	int PushFloatByRef(float *number, int flags=SM_PARAM_COPYBACK);

 	int PushArray(cell_t *inarray, unsigned int cells, int flags=0);

 	int PushString(const char *string);

 	int PushStringEx(char *buffer, size_t length, int sz_flags, int cp_flags);

 	void Cancel();

 public: /* INativeInvoker */

 	bool Start(IPluginContext *pContext, const char *name);

 	int Invoke(cell_t *result);

 private:

 	int _PushString(const char *string, int sz_flags, int cp_flags, size_t len);

 	int SetError(int err);

 private:

 	IPluginContext *pContext;

 	SPVM_NATIVE_FUNC native;

 	cell_t m_params[SP_MAX_EXEC_PARAMS];

 	ParamInfo m_info[SP_MAX_EXEC_PARAMS];

 	unsigned int m_curparam;

 	int m_errorstate;

 };

 class NativeInterface : 

 	public INativeInterface,

 	public SMGlobalClass

 {

 public: /* SMGlobalClass */

 	void OnSourceModAllInitialized();

 public: /* SMInterface */

 	unsigned int GetInterfaceVersion();

 	const char *GetInterfaceName();

 public: /* INativeInvoker */

 	IPluginRuntime *CreateRuntime(const char *name, size_t bytes);

 	INativeInvoker *CreateInvoker();

 };

 extern NativeInterface g_NInvoke;

 #endif /* _INCLUDE_SOURCEMOD_NATIVE_INVOKER_H_ */