[redis.git] / deps / lua / src / lua.h

/*
** $Id: lua.h,v 1.218.1.5 2008/08/06 13:30:12 roberto Exp $
** 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_RELEASE	"Lua 5.1.4"
#define LUA_VERSION_NUM	501
#define LUA_COPYRIGHT	"Copyright (C) 1994-2008 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


/* hack */
LUA_API void lua_setlevel	(lua_State *from, lua_State *to);


/*
** {======================================================================
** 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) 1994-2008 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
Commit	Line	Data
21d3294c	1	/*
	2	** $Id: lua.h,v 1.218.1.5 2008/08/06 13:30:12 roberto Exp $
	3	** Lua - An Extensible Extension Language
	4	** Lua.org, PUC-Rio, Brazil (http://www.lua.org)
	5	** See Copyright Notice at the end of this file
	6	*/
	7
	8
	9	#ifndef lua_h
	10	#define lua_h
	11
	12	#include <stdarg.h>
	13	#include <stddef.h>
	14
	15
	16	#include "luaconf.h"
	17
	18
	19	#define LUA_VERSION "Lua 5.1"
	20	#define LUA_RELEASE "Lua 5.1.4"
	21	#define LUA_VERSION_NUM 501
	22	#define LUA_COPYRIGHT "Copyright (C) 1994-2008 Lua.org, PUC-Rio"
	23	#define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo & W. Celes"
	24
	25
	26	/* mark for precompiled code (`<esc>Lua') */
	27	#define LUA_SIGNATURE "\033Lua"
	28
	29	/* option for multiple returns in `lua_pcall' and `lua_call' */
	30	#define LUA_MULTRET (-1)
	31
	32
	33	/*
	34	** pseudo-indices
	35	*/
	36	#define LUA_REGISTRYINDEX (-10000)
	37	#define LUA_ENVIRONINDEX (-10001)
	38	#define LUA_GLOBALSINDEX (-10002)
	39	#define lua_upvalueindex(i) (LUA_GLOBALSINDEX-(i))
	40
	41
	42	/* thread status; 0 is OK */
	43	#define LUA_YIELD 1
	44	#define LUA_ERRRUN 2
	45	#define LUA_ERRSYNTAX 3
	46	#define LUA_ERRMEM 4
	47	#define LUA_ERRERR 5
	48
	49
	50	typedef struct lua_State lua_State;
	51
	52	typedef int (lua_CFunction) (lua_State L);
	53
	54
	55	/*
	56	** functions that read/write blocks when loading/dumping Lua chunks
	57	*/
	58	typedef const char * (lua_Reader) (lua_State L, void ud, size_t sz);
	59
	60	typedef int (lua_Writer) (lua_State L, const void* p, size_t sz, void* ud);
	61
	62
	63	/*
	64	** prototype for memory-allocation functions
65	*/
66	typedef void * (lua_Alloc) (void ud, void *ptr, size_t osize, size_t nsize);
67
68
69	/*
70	** basic types
71	*/
72	#define LUA_TNONE (-1)
73
74	#define LUA_TNIL 0
75	#define LUA_TBOOLEAN 1
76	#define LUA_TLIGHTUSERDATA 2
77	#define LUA_TNUMBER 3
78	#define LUA_TSTRING 4
79	#define LUA_TTABLE 5
80	#define LUA_TFUNCTION 6
81	#define LUA_TUSERDATA 7
82	#define LUA_TTHREAD 8
83
84
85
86	/* minimum Lua stack available to a C function */
87	#define LUA_MINSTACK 20
88
89
90	/*
91	** generic extra include file
92	*/
93	#if defined(LUA_USER_H)
94	#include LUA_USER_H
95	#endif
96
97
98	/* type of numbers in Lua */
99	typedef LUA_NUMBER lua_Number;
100
101
102	/* type for integer functions */
103	typedef LUA_INTEGER lua_Integer;
104
105
106
107	/*
108	** state manipulation
109	*/
110	LUA_API lua_State (lua_newstate) (lua_Alloc f, void ud);
111	LUA_API void (lua_close) (lua_State *L);
112	LUA_API lua_State (lua_newthread) (lua_State L);
113
114	LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf);
115
116
117	/*
118	** basic stack manipulation
119	*/
120	LUA_API int (lua_gettop) (lua_State *L);
121	LUA_API void (lua_settop) (lua_State *L, int idx);
122	LUA_API void (lua_pushvalue) (lua_State *L, int idx);
123	LUA_API void (lua_remove) (lua_State *L, int idx);
124	LUA_API void (lua_insert) (lua_State *L, int idx);
125	LUA_API void (lua_replace) (lua_State *L, int idx);
126	LUA_API int (lua_checkstack) (lua_State *L, int sz);
127
128	LUA_API void (lua_xmove) (lua_State from, lua_State to, int n);
129
130
131	/*
132	** access functions (stack -> C)
133	*/
134
135	LUA_API int (lua_isnumber) (lua_State *L, int idx);
136	LUA_API int (lua_isstring) (lua_State *L, int idx);
137	LUA_API int (lua_iscfunction) (lua_State *L, int idx);
138	LUA_API int (lua_isuserdata) (lua_State *L, int idx);
139	LUA_API int (lua_type) (lua_State *L, int idx);
140	LUA_API const char (lua_typename) (lua_State L, int tp);
141
142	LUA_API int (lua_equal) (lua_State *L, int idx1, int idx2);
143	LUA_API int (lua_rawequal) (lua_State *L, int idx1, int idx2);
144	LUA_API int (lua_lessthan) (lua_State *L, int idx1, int idx2);
145
146	LUA_API lua_Number (lua_tonumber) (lua_State *L, int idx);
147	LUA_API lua_Integer (lua_tointeger) (lua_State *L, int idx);
148	LUA_API int (lua_toboolean) (lua_State *L, int idx);
149	LUA_API const char (lua_tolstring) (lua_State L, int idx, size_t *len);
150	LUA_API size_t (lua_objlen) (lua_State *L, int idx);
151	LUA_API lua_CFunction (lua_tocfunction) (lua_State *L, int idx);
152	LUA_API void (lua_touserdata) (lua_State L, int idx);
153	LUA_API lua_State (lua_tothread) (lua_State L, int idx);
154	LUA_API const void (lua_topointer) (lua_State L, int idx);
155
156
157	/*
158	** push functions (C -> stack)
159	*/
160	LUA_API void (lua_pushnil) (lua_State *L);
161	LUA_API void (lua_pushnumber) (lua_State *L, lua_Number n);
162	LUA_API void (lua_pushinteger) (lua_State *L, lua_Integer n);
163	LUA_API void (lua_pushlstring) (lua_State L, const char s, size_t l);
164	LUA_API void (lua_pushstring) (lua_State L, const char s);
165	LUA_API const char (lua_pushvfstring) (lua_State L, const char *fmt,
166	va_list argp);
167	LUA_API const char (lua_pushfstring) (lua_State L, const char *fmt, ...);
168	LUA_API void (lua_pushcclosure) (lua_State *L, lua_CFunction fn, int n);
169	LUA_API void (lua_pushboolean) (lua_State *L, int b);
170	LUA_API void (lua_pushlightuserdata) (lua_State L, void p);
171	LUA_API int (lua_pushthread) (lua_State *L);
172
173
174	/*
175	** get functions (Lua -> stack)
176	*/
177	LUA_API void (lua_gettable) (lua_State *L, int idx);
178	LUA_API void (lua_getfield) (lua_State L, int idx, const char k);
179	LUA_API void (lua_rawget) (lua_State *L, int idx);
180	LUA_API void (lua_rawgeti) (lua_State *L, int idx, int n);
181	LUA_API void (lua_createtable) (lua_State *L, int narr, int nrec);
182	LUA_API void (lua_newuserdata) (lua_State L, size_t sz);
183	LUA_API int (lua_getmetatable) (lua_State *L, int objindex);
184	LUA_API void (lua_getfenv) (lua_State *L, int idx);
185
186
187	/*
188	** set functions (stack -> Lua)
189	*/
190	LUA_API void (lua_settable) (lua_State *L, int idx);
191	LUA_API void (lua_setfield) (lua_State L, int idx, const char k);
192	LUA_API void (lua_rawset) (lua_State *L, int idx);
193	LUA_API void (lua_rawseti) (lua_State *L, int idx, int n);
194	LUA_API int (lua_setmetatable) (lua_State *L, int objindex);
195	LUA_API int (lua_setfenv) (lua_State *L, int idx);
196
197
198	/*
199	** `load' and `call' functions (load and run Lua code)
200	*/
201	LUA_API void (lua_call) (lua_State *L, int nargs, int nresults);
202	LUA_API int (lua_pcall) (lua_State *L, int nargs, int nresults, int errfunc);
203	LUA_API int (lua_cpcall) (lua_State L, lua_CFunction func, void ud);
204	LUA_API int (lua_load) (lua_State L, lua_Reader reader, void dt,
205	const char *chunkname);
206
207	LUA_API int (lua_dump) (lua_State L, lua_Writer writer, void data);
208
209
210	/*
211	** coroutine functions
212	*/
213	LUA_API int (lua_yield) (lua_State *L, int nresults);
214	LUA_API int (lua_resume) (lua_State *L, int narg);
215	LUA_API int (lua_status) (lua_State *L);
216
217	/*
218	** garbage-collection function and options
219	*/
220
221	#define LUA_GCSTOP 0
222	#define LUA_GCRESTART 1
223	#define LUA_GCCOLLECT 2
224	#define LUA_GCCOUNT 3
225	#define LUA_GCCOUNTB 4
226	#define LUA_GCSTEP 5
227	#define LUA_GCSETPAUSE 6
228	#define LUA_GCSETSTEPMUL 7
229
230	LUA_API int (lua_gc) (lua_State *L, int what, int data);
231
232
233	/*
234	** miscellaneous functions
235	*/
236
237	LUA_API int (lua_error) (lua_State *L);
238
239	LUA_API int (lua_next) (lua_State *L, int idx);
240
241	LUA_API void (lua_concat) (lua_State *L, int n);
242
243	LUA_API lua_Alloc (lua_getallocf) (lua_State L, void *ud);
244	LUA_API void lua_setallocf (lua_State L, lua_Alloc f, void ud);
245
246
247
248	/*
249	** ===============================================================
250	** some useful macros
251	** ===============================================================
252	*/
253
254	#define lua_pop(L,n) lua_settop(L, -(n)-1)
255
256	#define lua_newtable(L) lua_createtable(L, 0, 0)
257
258	#define lua_register(L,n,f) (lua_pushcfunction(L, (f)), lua_setglobal(L, (n)))
259
260	#define lua_pushcfunction(L,f) lua_pushcclosure(L, (f), 0)
261
262	#define lua_strlen(L,i) lua_objlen(L, (i))
263
264	#define lua_isfunction(L,n) (lua_type(L, (n)) == LUA_TFUNCTION)
265	#define lua_istable(L,n) (lua_type(L, (n)) == LUA_TTABLE)
266	#define lua_islightuserdata(L,n) (lua_type(L, (n)) == LUA_TLIGHTUSERDATA)
267	#define lua_isnil(L,n) (lua_type(L, (n)) == LUA_TNIL)
268	#define lua_isboolean(L,n) (lua_type(L, (n)) == LUA_TBOOLEAN)
269	#define lua_isthread(L,n) (lua_type(L, (n)) == LUA_TTHREAD)
270	#define lua_isnone(L,n) (lua_type(L, (n)) == LUA_TNONE)
271	#define lua_isnoneornil(L, n) (lua_type(L, (n)) <= 0)
272
273	#define lua_pushliteral(L, s) \
274	lua_pushlstring(L, "" s, (sizeof(s)/sizeof(char))-1)
275
276	#define lua_setglobal(L,s) lua_setfield(L, LUA_GLOBALSINDEX, (s))
277	#define lua_getglobal(L,s) lua_getfield(L, LUA_GLOBALSINDEX, (s))
278
279	#define lua_tostring(L,i) lua_tolstring(L, (i), NULL)
280
281
282
283	/*
284	** compatibility macros and functions
285	*/
286
287	#define lua_open() luaL_newstate()
288
289	#define lua_getregistry(L) lua_pushvalue(L, LUA_REGISTRYINDEX)
290
291	#define lua_getgccount(L) lua_gc(L, LUA_GCCOUNT, 0)
292
293	#define lua_Chunkreader lua_Reader
294	#define lua_Chunkwriter lua_Writer
295
296
297	/* hack */
298	LUA_API void lua_setlevel (lua_State from, lua_State to);
299
300
301	/*
302	** {======================================================================
303	** Debug API
304	** =======================================================================
305	*/
306
307
308	/*
309	** Event codes
310	*/
311	#define LUA_HOOKCALL 0
312	#define LUA_HOOKRET 1
313	#define LUA_HOOKLINE 2
314	#define LUA_HOOKCOUNT 3
315	#define LUA_HOOKTAILRET 4
316
317
318	/*
319	** Event masks
320	*/
321	#define LUA_MASKCALL (1 << LUA_HOOKCALL)
322	#define LUA_MASKRET (1 << LUA_HOOKRET)
323	#define LUA_MASKLINE (1 << LUA_HOOKLINE)
324	#define LUA_MASKCOUNT (1 << LUA_HOOKCOUNT)
325
326	typedef struct lua_Debug lua_Debug; /* activation record */
327
328
329	/* Functions to be called by the debuger in specific events */
330	typedef void (lua_Hook) (lua_State L, lua_Debug *ar);
331
332
333	LUA_API int lua_getstack (lua_State L, int level, lua_Debug ar);
334	LUA_API int lua_getinfo (lua_State L, const char what, lua_Debug *ar);
335	LUA_API const char lua_getlocal (lua_State L, const lua_Debug *ar, int n);
336	LUA_API const char lua_setlocal (lua_State L, const lua_Debug *ar, int n);
337	LUA_API const char lua_getupvalue (lua_State L, int funcindex, int n);
338	LUA_API const char lua_setupvalue (lua_State L, int funcindex, int n);
339
340	LUA_API int lua_sethook (lua_State *L, lua_Hook func, int mask, int count);
341	LUA_API lua_Hook lua_gethook (lua_State *L);
342	LUA_API int lua_gethookmask (lua_State *L);
343	LUA_API int lua_gethookcount (lua_State *L);
344
345
346	struct lua_Debug {
347	int event;
348	const char name; / (n) */
349	const char namewhat; / (n) `global', `local', `field', `method' */
350	const char what; / (S) `Lua', `C', `main', `tail' */
351	const char source; / (S) */
352	int currentline; /* (l) */
353	int nups; /* (u) number of upvalues */
354	int linedefined; /* (S) */
355	int lastlinedefined; /* (S) */
356	char short_src[LUA_IDSIZE]; /* (S) */
357	/* private part */
358	int i_ci; /* active function */
359	};
360
361	/* }====================================================================== */
362
363
364	/******************************************************************************
365	* Copyright (C) 1994-2008 Lua.org, PUC-Rio. All rights reserved.
366	*
367	* Permission is hereby granted, free of charge, to any person obtaining
368	* a copy of this software and associated documentation files (the
369	* "Software"), to deal in the Software without restriction, including
370	* without limitation the rights to use, copy, modify, merge, publish,
371	* distribute, sublicense, and/or sell copies of the Software, and to
372	* permit persons to whom the Software is furnished to do so, subject to
373	* the following conditions:
374	*
375	* The above copyright notice and this permission notice shall be
376	* included in all copies or substantial portions of the Software.
377	*
378	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
379	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
380	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
381	* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
382	* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
383	* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
384	* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
385	******************************************************************************/
386
387
388	#endif