lua.h - external/github.com/lua/lua - Git at Google

 /*
 ** $Id: lua.h,v 1.215 2005/12/27 17:09:50 roberto Exp roberto $
 ** Lua - An Extensible Extension Language
 ** Lua.org, PUC-Rio, Brazil (http://www.lua.org)
 ** See Copyright Notice at the end of this file
 */


 #ifndef lua_h
 #define lua_h

 #include <stdarg.h>
 #include <stddef.h>


 #include "luaconf.h"


 #define LUA_VERSION	"Lua 5.1"
 #define LUA_VERSION_NUM	501
 #define LUA_COPYRIGHT	"Copyright (C) 1994-2006 Lua.org, PUC-Rio"
 #define LUA_AUTHORS 	"R. Ierusalimschy, L. H. de Figueiredo & W. Celes"


 /* mark for precompiled code (`<esc>Lua') */
 #define	LUA_SIGNATURE	"\033Lua"

 /* option for multiple returns in `lua_pcall' and `lua_call' */
 #define LUA_MULTRET	(-1)


 /*
 ** pseudo-indices
 */
 #define LUA_REGISTRYINDEX	(-10000)
 #define LUA_ENVIRONINDEX	(-10001)
 #define LUA_GLOBALSINDEX	(-10002)
 #define lua_upvalueindex(i)	(LUA_GLOBALSINDEX-(i))


 /* thread status; 0 is OK */
 #define LUA_YIELD	1
 #define LUA_ERRRUN	2
 #define LUA_ERRSYNTAX	3
 #define LUA_ERRMEM	4
 #define LUA_ERRERR	5


 typedef struct lua_State lua_State;

 typedef int (*lua_CFunction) (lua_State *L);


 /*
 ** functions that read/write blocks when loading/dumping Lua chunks
 */
 typedef const char * (*lua_Reader) (lua_State *L, void *ud, size_t *sz);

 typedef int (*lua_Writer) (lua_State *L, const void* p, size_t sz, void* ud);


 /*
 ** prototype for memory-allocation functions
 */
 typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize);


 /*
 ** basic types
 */
 #define LUA_TNONE		(-1)

 #define LUA_TNIL		0
 #define LUA_TBOOLEAN		1
 #define LUA_TLIGHTUSERDATA	2
 #define LUA_TNUMBER		3
 #define LUA_TSTRING		4
 #define LUA_TTABLE		5
 #define LUA_TFUNCTION		6
 #define LUA_TUSERDATA		7
 #define LUA_TTHREAD		8


 /* minimum Lua stack available to a C function */
 #define LUA_MINSTACK	20


 /*
 ** generic extra include file
 */
 #if defined(LUA_USER_H)
 #include LUA_USER_H
 #endif


 /* type of numbers in Lua */
 typedef LUA_NUMBER lua_Number;


 /* type for integer functions */
 typedef LUA_INTEGER lua_Integer;


 /*
 ** state manipulation
 */
 LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud);
 LUA_API void       (lua_close) (lua_State *L);
 LUA_API lua_State *(lua_newthread) (lua_State *L);

 LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf);


 /*
 ** basic stack manipulation
 */
 LUA_API int   (lua_gettop) (lua_State *L);
 LUA_API void  (lua_settop) (lua_State *L, int idx);
 LUA_API void  (lua_pushvalue) (lua_State *L, int idx);
 LUA_API void  (lua_remove) (lua_State *L, int idx);
 LUA_API void  (lua_insert) (lua_State *L, int idx);
 LUA_API void  (lua_replace) (lua_State *L, int idx);
 LUA_API int   (lua_checkstack) (lua_State *L, int sz);

 LUA_API void  (lua_xmove) (lua_State *from, lua_State *to, int n);


 /*
 ** access functions (stack -> C)
 */

 LUA_API int             (lua_isnumber) (lua_State *L, int idx);
 LUA_API int             (lua_isstring) (lua_State *L, int idx);
 LUA_API int             (lua_iscfunction) (lua_State *L, int idx);
 LUA_API int             (lua_isuserdata) (lua_State *L, int idx);
 LUA_API int             (lua_type) (lua_State *L, int idx);
 LUA_API const char     *(lua_typename) (lua_State *L, int tp);

 LUA_API int            (lua_equal) (lua_State *L, int idx1, int idx2);
 LUA_API int            (lua_rawequal) (lua_State *L, int idx1, int idx2);
 LUA_API int            (lua_lessthan) (lua_State *L, int idx1, int idx2);

 LUA_API lua_Number      (lua_tonumber) (lua_State *L, int idx);
 LUA_API lua_Integer     (lua_tointeger) (lua_State *L, int idx);
 LUA_API int             (lua_toboolean) (lua_State *L, int idx);
 LUA_API const char     *(lua_tolstring) (lua_State *L, int idx, size_t *len);
 LUA_API size_t          (lua_objlen) (lua_State *L, int idx);
 LUA_API lua_CFunction   (lua_tocfunction) (lua_State *L, int idx);
 LUA_API void	       *(lua_touserdata) (lua_State *L, int idx);
 LUA_API lua_State      *(lua_tothread) (lua_State *L, int idx);
 LUA_API const void     *(lua_topointer) (lua_State *L, int idx);


 /*
 ** push functions (C -> stack)
 */
 LUA_API void  (lua_pushnil) (lua_State *L);
 LUA_API void  (lua_pushnumber) (lua_State *L, lua_Number n);
 LUA_API void  (lua_pushinteger) (lua_State *L, lua_Integer n);
 LUA_API void  (lua_pushlstring) (lua_State *L, const char *s, size_t l);
 LUA_API void  (lua_pushstring) (lua_State *L, const char *s);
 LUA_API const char *(lua_pushvfstring) (lua_State *L, const char *fmt,
                                                       va_list argp);
 LUA_API const char *(lua_pushfstring) (lua_State *L, const char *fmt, ...);
 LUA_API void  (lua_pushcclosure) (lua_State *L, lua_CFunction fn, int n);
 LUA_API void  (lua_pushboolean) (lua_State *L, int b);
 LUA_API void  (lua_pushlightuserdata) (lua_State *L, void *p);
 LUA_API int   (lua_pushthread) (lua_State *L);


 /*
 ** get functions (Lua -> stack)
 */
 LUA_API void  (lua_gettable) (lua_State *L, int idx);
 LUA_API void  (lua_getfield) (lua_State *L, int idx, const char *k);
 LUA_API void  (lua_rawget) (lua_State *L, int idx);
 LUA_API void  (lua_rawgeti) (lua_State *L, int idx, int n);
 LUA_API void  (lua_createtable) (lua_State *L, int narr, int nrec);
 LUA_API void *(lua_newuserdata) (lua_State *L, size_t sz);
 LUA_API int   (lua_getmetatable) (lua_State *L, int objindex);
 LUA_API void  (lua_getfenv) (lua_State *L, int idx);


 /*
 ** set functions (stack -> Lua)
 */
 LUA_API void  (lua_settable) (lua_State *L, int idx);
 LUA_API void  (lua_setfield) (lua_State *L, int idx, const char *k);
 LUA_API void  (lua_rawset) (lua_State *L, int idx);
 LUA_API void  (lua_rawseti) (lua_State *L, int idx, int n);
 LUA_API int   (lua_setmetatable) (lua_State *L, int objindex);
 LUA_API int   (lua_setfenv) (lua_State *L, int idx);


 /*
 ** `load' and `call' functions (load and run Lua code)
 */
 LUA_API void  (lua_call) (lua_State *L, int nargs, int nresults);
 LUA_API int   (lua_pcall) (lua_State *L, int nargs, int nresults, int errfunc);
 LUA_API int   (lua_cpcall) (lua_State *L, lua_CFunction func, void *ud);
 LUA_API int   (lua_load) (lua_State *L, lua_Reader reader, void *dt,
                                         const char *chunkname);

 LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data);


 /*
 ** coroutine functions
 */
 LUA_API int  (lua_yield) (lua_State *L, int nresults);
 LUA_API int  (lua_resume) (lua_State *L, int narg);
 LUA_API int  (lua_status) (lua_State *L);

 /*
 ** garbage-collection function and options
 */

 #define LUA_GCSTOP		0
 #define LUA_GCRESTART		1
 #define LUA_GCCOLLECT		2
 #define LUA_GCCOUNT		3
 #define LUA_GCCOUNTB		4
 #define LUA_GCSTEP		5
 #define LUA_GCSETPAUSE		6
 #define LUA_GCSETSTEPMUL	7

 LUA_API int (lua_gc) (lua_State *L, int what, int data);


 /*
 ** miscellaneous functions
 */

 LUA_API int   (lua_error) (lua_State *L);

 LUA_API int   (lua_next) (lua_State *L, int idx);

 LUA_API void  (lua_concat) (lua_State *L, int n);

 LUA_API lua_Alloc (lua_getallocf) (lua_State *L, void **ud);
 LUA_API void lua_setallocf (lua_State *L, lua_Alloc f, void *ud);


 /*
 ** ===============================================================
 ** some useful macros
 ** ===============================================================
 */

 #define lua_pop(L,n)		lua_settop(L, -(n)-1)

 #define lua_newtable(L)		lua_createtable(L, 0, 0)

 #define lua_register(L,n,f) (lua_pushcfunction(L, (f)), lua_setglobal(L, (n)))

 #define lua_pushcfunction(L,f)	lua_pushcclosure(L, (f), 0)

 #define lua_strlen(L,i)		lua_objlen(L, (i))

 #define lua_isfunction(L,n)	(lua_type(L, (n)) == LUA_TFUNCTION)
 #define lua_istable(L,n)	(lua_type(L, (n)) == LUA_TTABLE)
 #define lua_islightuserdata(L,n)	(lua_type(L, (n)) == LUA_TLIGHTUSERDATA)
 #define lua_isnil(L,n)		(lua_type(L, (n)) == LUA_TNIL)
 #define lua_isboolean(L,n)	(lua_type(L, (n)) == LUA_TBOOLEAN)
 #define lua_isthread(L,n)	(lua_type(L, (n)) == LUA_TTHREAD)
 #define lua_isnone(L,n)		(lua_type(L, (n)) == LUA_TNONE)
 #define lua_isnoneornil(L, n)	(lua_type(L, (n)) <= 0)

 #define lua_pushliteral(L, s)	\
 	lua_pushlstring(L, "" s, (sizeof(s)/sizeof(char))-1)

 #define lua_setglobal(L,s)	lua_setfield(L, LUA_GLOBALSINDEX, (s))
 #define lua_getglobal(L,s)	lua_getfield(L, LUA_GLOBALSINDEX, (s))

 #define lua_tostring(L,i)	lua_tolstring(L, (i), NULL)


 /*
 ** compatibility macros and functions
 */

 #define lua_open()	luaL_newstate()

 #define lua_getregistry(L)	lua_pushvalue(L, LUA_REGISTRYINDEX)

 #define lua_getgccount(L)	lua_gc(L, LUA_GCCOUNT, 0)

 #define lua_Chunkreader		lua_Reader
 #define lua_Chunkwriter		lua_Writer


 /*
 ** {======================================================================
 ** Debug API
 ** =======================================================================
 */


 /*
 ** Event codes
 */
 #define LUA_HOOKCALL	0
 #define LUA_HOOKRET	1
 #define LUA_HOOKLINE	2
 #define LUA_HOOKCOUNT	3
 #define LUA_HOOKTAILRET 4


 /*
 ** Event masks
 */
 #define LUA_MASKCALL	(1 << LUA_HOOKCALL)
 #define LUA_MASKRET	(1 << LUA_HOOKRET)
 #define LUA_MASKLINE	(1 << LUA_HOOKLINE)
 #define LUA_MASKCOUNT	(1 << LUA_HOOKCOUNT)

 typedef struct lua_Debug lua_Debug;  /* activation record */


 /* Functions to be called by the debuger in specific events */
 typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar);


 LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar);
 LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar);
 LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n);
 LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n);
 LUA_API const char *lua_getupvalue (lua_State *L, int funcindex, int n);
 LUA_API const char *lua_setupvalue (lua_State *L, int funcindex, int n);

 LUA_API int lua_sethook (lua_State *L, lua_Hook func, int mask, int count);
 LUA_API lua_Hook lua_gethook (lua_State *L);
 LUA_API int lua_gethookmask (lua_State *L);
 LUA_API int lua_gethookcount (lua_State *L);


 struct lua_Debug {
   int event;
   const char *name;	/* (n) */
   const char *namewhat;	/* (n) `global', `local', `field', `method' */
   const char *what;	/* (S) `Lua', `C', `main', `tail' */
   const char *source;	/* (S) */
   int currentline;	/* (l) */
   int nups;		/* (u) number of upvalues */
   int linedefined;	/* (S) */
   int lastlinedefined;	/* (S) */
   char short_src[LUA_IDSIZE]; /* (S) */
   /* private part */
   int i_ci;  /* active function */
 };

 /* }====================================================================== */


 /******************************************************************************
 * Copyright (C) 1994-2006 Lua.org, PUC-Rio.  All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 ******************************************************************************/


 #endif
	/*
	** $Id: lua.h,v 1.215 2005/12/27 17:09:50 roberto Exp roberto $
	** Lua - An Extensible Extension Language
	** Lua.org, PUC-Rio, Brazil (http://www.lua.org)
	** See Copyright Notice at the end of this file
	*/


	#ifndef lua_h
	#define lua_h

	#include <stdarg.h>
	#include <stddef.h>


	#include "luaconf.h"


	#define LUA_VERSION "Lua 5.1"
	#define LUA_VERSION_NUM 501
	#define LUA_COPYRIGHT "Copyright (C) 1994-2006 Lua.org, PUC-Rio"
	#define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo & W. Celes"


	/* mark for precompiled code (`<esc>Lua') */
	#define LUA_SIGNATURE "\033Lua"

	/* option for multiple returns in `lua_pcall' and `lua_call' */
	#define LUA_MULTRET (-1)


	/*
	** pseudo-indices
	*/
	#define LUA_REGISTRYINDEX (-10000)
	#define LUA_ENVIRONINDEX (-10001)
	#define LUA_GLOBALSINDEX (-10002)
	#define lua_upvalueindex(i) (LUA_GLOBALSINDEX-(i))


	/* thread status; 0 is OK */
	#define LUA_YIELD 1
	#define LUA_ERRRUN 2
	#define LUA_ERRSYNTAX 3
	#define LUA_ERRMEM 4
	#define LUA_ERRERR 5


	typedef struct lua_State lua_State;

	typedef int (lua_CFunction) (lua_State L);


	/*
	** functions that read/write blocks when loading/dumping Lua chunks
	*/
	typedef const char * (lua_Reader) (lua_State L, void ud, size_t sz);

	typedef int (lua_Writer) (lua_State L, const void* p, size_t sz, void* ud);


	/*
	** prototype for memory-allocation functions
	*/
	typedef void * (lua_Alloc) (void ud, void *ptr, size_t osize, size_t nsize);


	/*
	** basic types
	*/
	#define LUA_TNONE (-1)

	#define LUA_TNIL 0
	#define LUA_TBOOLEAN 1
	#define LUA_TLIGHTUSERDATA 2
	#define LUA_TNUMBER 3
	#define LUA_TSTRING 4
	#define LUA_TTABLE 5
	#define LUA_TFUNCTION 6
	#define LUA_TUSERDATA 7
	#define LUA_TTHREAD 8



	/* minimum Lua stack available to a C function */
	#define LUA_MINSTACK 20


	/*
	** generic extra include file
	*/
	#if defined(LUA_USER_H)
	#include LUA_USER_H
	#endif


	/* type of numbers in Lua */
	typedef LUA_NUMBER lua_Number;


	/* type for integer functions */
	typedef LUA_INTEGER lua_Integer;



	/*
	** state manipulation
	*/
	LUA_API lua_State (lua_newstate) (lua_Alloc f, void ud);
	LUA_API void (lua_close) (lua_State *L);
	LUA_API lua_State (lua_newthread) (lua_State L);

	LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf);


	/*
	** basic stack manipulation
	*/
	LUA_API int (lua_gettop) (lua_State *L);
	LUA_API void (lua_settop) (lua_State *L, int idx);
	LUA_API void (lua_pushvalue) (lua_State *L, int idx);
	LUA_API void (lua_remove) (lua_State *L, int idx);
	LUA_API void (lua_insert) (lua_State *L, int idx);
	LUA_API void (lua_replace) (lua_State *L, int idx);
	LUA_API int (lua_checkstack) (lua_State *L, int sz);

	LUA_API void (lua_xmove) (lua_State from, lua_State to, int n);


	/*
	** access functions (stack -> C)
	*/

	LUA_API int (lua_isnumber) (lua_State *L, int idx);
	LUA_API int (lua_isstring) (lua_State *L, int idx);
	LUA_API int (lua_iscfunction) (lua_State *L, int idx);
	LUA_API int (lua_isuserdata) (lua_State *L, int idx);
	LUA_API int (lua_type) (lua_State *L, int idx);
	LUA_API const char (lua_typename) (lua_State L, int tp);

	LUA_API int (lua_equal) (lua_State *L, int idx1, int idx2);
	LUA_API int (lua_rawequal) (lua_State *L, int idx1, int idx2);
	LUA_API int (lua_lessthan) (lua_State *L, int idx1, int idx2);

	LUA_API lua_Number (lua_tonumber) (lua_State *L, int idx);
	LUA_API lua_Integer (lua_tointeger) (lua_State *L, int idx);
	LUA_API int (lua_toboolean) (lua_State *L, int idx);
	LUA_API const char (lua_tolstring) (lua_State L, int idx, size_t *len);
	LUA_API size_t (lua_objlen) (lua_State *L, int idx);
	LUA_API lua_CFunction (lua_tocfunction) (lua_State *L, int idx);
	LUA_API void (lua_touserdata) (lua_State L, int idx);
	LUA_API lua_State (lua_tothread) (lua_State L, int idx);
	LUA_API const void (lua_topointer) (lua_State L, int idx);


	/*
	** push functions (C -> stack)
	*/
	LUA_API void (lua_pushnil) (lua_State *L);
	LUA_API void (lua_pushnumber) (lua_State *L, lua_Number n);
	LUA_API void (lua_pushinteger) (lua_State *L, lua_Integer n);
	LUA_API void (lua_pushlstring) (lua_State L, const char s, size_t l);
	LUA_API void (lua_pushstring) (lua_State L, const char s);
	LUA_API const char (lua_pushvfstring) (lua_State L, const char *fmt,
	va_list argp);
	LUA_API const char (lua_pushfstring) (lua_State L, const char *fmt, ...);
	LUA_API void (lua_pushcclosure) (lua_State *L, lua_CFunction fn, int n);
	LUA_API void (lua_pushboolean) (lua_State *L, int b);
	LUA_API void (lua_pushlightuserdata) (lua_State L, void p);
	LUA_API int (lua_pushthread) (lua_State *L);


	/*
	** get functions (Lua -> stack)
	*/
	LUA_API void (lua_gettable) (lua_State *L, int idx);
	LUA_API void (lua_getfield) (lua_State L, int idx, const char k);
	LUA_API void (lua_rawget) (lua_State *L, int idx);
	LUA_API void (lua_rawgeti) (lua_State *L, int idx, int n);
	LUA_API void (lua_createtable) (lua_State *L, int narr, int nrec);
	LUA_API void (lua_newuserdata) (lua_State L, size_t sz);
	LUA_API int (lua_getmetatable) (lua_State *L, int objindex);
	LUA_API void (lua_getfenv) (lua_State *L, int idx);


	/*
	** set functions (stack -> Lua)
	*/
	LUA_API void (lua_settable) (lua_State *L, int idx);
	LUA_API void (lua_setfield) (lua_State L, int idx, const char k);
	LUA_API void (lua_rawset) (lua_State *L, int idx);
	LUA_API void (lua_rawseti) (lua_State *L, int idx, int n);
	LUA_API int (lua_setmetatable) (lua_State *L, int objindex);
	LUA_API int (lua_setfenv) (lua_State *L, int idx);


	/*
	** `load' and `call' functions (load and run Lua code)
	*/
	LUA_API void (lua_call) (lua_State *L, int nargs, int nresults);
	LUA_API int (lua_pcall) (lua_State *L, int nargs, int nresults, int errfunc);
	LUA_API int (lua_cpcall) (lua_State L, lua_CFunction func, void ud);
	LUA_API int (lua_load) (lua_State L, lua_Reader reader, void dt,
	const char *chunkname);

	LUA_API int (lua_dump) (lua_State L, lua_Writer writer, void data);


	/*
	** coroutine functions
	*/
	LUA_API int (lua_yield) (lua_State *L, int nresults);
	LUA_API int (lua_resume) (lua_State *L, int narg);
	LUA_API int (lua_status) (lua_State *L);

	/*
	** garbage-collection function and options
	*/

	#define LUA_GCSTOP 0
	#define LUA_GCRESTART 1
	#define LUA_GCCOLLECT 2
	#define LUA_GCCOUNT 3
	#define LUA_GCCOUNTB 4
	#define LUA_GCSTEP 5
	#define LUA_GCSETPAUSE 6
	#define LUA_GCSETSTEPMUL 7

	LUA_API int (lua_gc) (lua_State *L, int what, int data);


	/*
	** miscellaneous functions
	*/

	LUA_API int (lua_error) (lua_State *L);

	LUA_API int (lua_next) (lua_State *L, int idx);

	LUA_API void (lua_concat) (lua_State *L, int n);

	LUA_API lua_Alloc (lua_getallocf) (lua_State L, void *ud);
	LUA_API void lua_setallocf (lua_State L, lua_Alloc f, void ud);



	/*
	** ===============================================================
	** some useful macros
	** ===============================================================
	*/

	#define lua_pop(L,n) lua_settop(L, -(n)-1)

	#define lua_newtable(L) lua_createtable(L, 0, 0)

	#define lua_register(L,n,f) (lua_pushcfunction(L, (f)), lua_setglobal(L, (n)))

	#define lua_pushcfunction(L,f) lua_pushcclosure(L, (f), 0)

	#define lua_strlen(L,i) lua_objlen(L, (i))

	#define lua_isfunction(L,n) (lua_type(L, (n)) == LUA_TFUNCTION)
	#define lua_istable(L,n) (lua_type(L, (n)) == LUA_TTABLE)
	#define lua_islightuserdata(L,n) (lua_type(L, (n)) == LUA_TLIGHTUSERDATA)
	#define lua_isnil(L,n) (lua_type(L, (n)) == LUA_TNIL)
	#define lua_isboolean(L,n) (lua_type(L, (n)) == LUA_TBOOLEAN)
	#define lua_isthread(L,n) (lua_type(L, (n)) == LUA_TTHREAD)
	#define lua_isnone(L,n) (lua_type(L, (n)) == LUA_TNONE)
	#define lua_isnoneornil(L, n) (lua_type(L, (n)) <= 0)

	#define lua_pushliteral(L, s) \
	lua_pushlstring(L, "" s, (sizeof(s)/sizeof(char))-1)

	#define lua_setglobal(L,s) lua_setfield(L, LUA_GLOBALSINDEX, (s))
	#define lua_getglobal(L,s) lua_getfield(L, LUA_GLOBALSINDEX, (s))

	#define lua_tostring(L,i) lua_tolstring(L, (i), NULL)



	/*
	** compatibility macros and functions
	*/

	#define lua_open() luaL_newstate()

	#define lua_getregistry(L) lua_pushvalue(L, LUA_REGISTRYINDEX)

	#define lua_getgccount(L) lua_gc(L, LUA_GCCOUNT, 0)

	#define lua_Chunkreader lua_Reader
	#define lua_Chunkwriter lua_Writer



	/*
	** {======================================================================
	** Debug API
	** =======================================================================
	*/


	/*
	** Event codes
	*/
	#define LUA_HOOKCALL 0
	#define LUA_HOOKRET 1
	#define LUA_HOOKLINE 2
	#define LUA_HOOKCOUNT 3
	#define LUA_HOOKTAILRET 4


	/*
	** Event masks
	*/
	#define LUA_MASKCALL (1 << LUA_HOOKCALL)
	#define LUA_MASKRET (1 << LUA_HOOKRET)
	#define LUA_MASKLINE (1 << LUA_HOOKLINE)
	#define LUA_MASKCOUNT (1 << LUA_HOOKCOUNT)

	typedef struct lua_Debug lua_Debug; /* activation record */


	/* Functions to be called by the debuger in specific events */
	typedef void (lua_Hook) (lua_State L, lua_Debug *ar);


	LUA_API int lua_getstack (lua_State L, int level, lua_Debug ar);
	LUA_API int lua_getinfo (lua_State L, const char what, lua_Debug *ar);
	LUA_API const char lua_getlocal (lua_State L, const lua_Debug *ar, int n);
	LUA_API const char lua_setlocal (lua_State L, const lua_Debug *ar, int n);
	LUA_API const char lua_getupvalue (lua_State L, int funcindex, int n);
	LUA_API const char lua_setupvalue (lua_State L, int funcindex, int n);

	LUA_API int lua_sethook (lua_State *L, lua_Hook func, int mask, int count);
	LUA_API lua_Hook lua_gethook (lua_State *L);
	LUA_API int lua_gethookmask (lua_State *L);
	LUA_API int lua_gethookcount (lua_State *L);


	struct lua_Debug {
	int event;
	const char name; / (n) */
	const char namewhat; / (n) `global', `local', `field', `method' */
	const char what; / (S) `Lua', `C', `main', `tail' */
	const char source; / (S) */
	int currentline; /* (l) */
	int nups; /* (u) number of upvalues */
	int linedefined; /* (S) */
	int lastlinedefined; /* (S) */
	char short_src[LUA_IDSIZE]; /* (S) */
	/* private part */
	int i_ci; /* active function */
	};

	/* }====================================================================== */


	/******************************************************************************
	* Copyright (C) 1994-2006 Lua.org, PUC-Rio. All rights reserved.
	*
	* Permission is hereby granted, free of charge, to any person obtaining
	* a copy of this software and associated documentation files (the
	* "Software"), to deal in the Software without restriction, including
	* without limitation the rights to use, copy, modify, merge, publish,
	* distribute, sublicense, and/or sell copies of the Software, and to
	* permit persons to whom the Software is furnished to do so, subject to
	* the following conditions:
	*
	* The above copyright notice and this permission notice shall be
	* included in all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
	* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
	* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
	* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	******************************************************************************/


	#endif