/*** $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	5typedef 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	7LUA_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