/*** $Id: lua.h,v 1.325 2014/12/26 17:24:27 roberto Exp $** Lua - A Scripting 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_MAJOR	"5"#define LUA_VERSION_MINOR	"3"#define LUA_VERSION_NUM		503#define LUA_VERSION_RELEASE	"0" #define LUA_VERSION	"Lua " LUA_VERSION_MAJOR "." LUA_VERSION_MINOR#define LUA_RELEASE	LUA_VERSION "." LUA_VERSION_RELEASE#define LUA_COPYRIGHT	LUA_RELEASE "  Copyright (C) 1994-2015 Lua.org, PUC-Rio"#define LUA_AUTHORS	"R. Ierusalimschy, L. H. de Figueiredo, W. Celes"  /* mark for precompiled code ('<esc>Lua') */#define LUA_SIGNATURE	"\x1bLua" /* option for multiple returns in 'lua_pcall' and 'lua_call' */#define LUA_MULTRET	(-1)  /*** pseudo-indices*/#define LUA_REGISTRYINDEX	LUAI_FIRSTPSEUDOIDX#define lua_upvalueindex(i)	(LUA_REGISTRYINDEX - (i))  /* thread status */#define LUA_OK		0#define LUA_YIELD	1#define LUA_ERRRUN	2#define LUA_ERRSYNTAX	3#define LUA_ERRMEM	4#define LUA_ERRGCMM	5#define LUA_ERRERR	6  typedef struct lua_State lua_State;  /*** 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 #define LUA_NUMTAGS		9   /* minimum Lua stack available to a C function */#define LUA_MINSTACK	20  /* predefined values in the registry */#define LUA_RIDX_MAINTHREAD	1#define LUA_RIDX_GLOBALS	2#define LUA_RIDX_LAST		LUA_RIDX_GLOBALS  /* type of numbers in Lua */typedef LUA_NUMBER lua_Number;  /* type for integer functions */typedef LUA_INTEGER lua_Integer; /* unsigned integer type */typedef LUA_UNSIGNED lua_Unsigned; /* type for continuation-function contexts */typedef LUA_KCONTEXT lua_KContext;  /*** Type for C functions registered with Lua*/typedef int (*lua_CFunction) (lua_State *L); /*** Type for continuation functions*/typedef int (*lua_KFunction) (lua_State *L, int status, lua_KContext ctx);  /*** Type for 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);  /*** Type for memory-allocation functions*/typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize);   /*** generic extra include file*/#if defined(LUA_USER_H)#include LUA_USER_H#endif  /*** RCS ident string*/extern const char lua_ident[];  /*** 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);  LUA_API const lua_Number *(lua_version) (lua_State *L);  /*** basic stack manipulation*/LUA_API int   (lua_absindex) (lua_State *L, int idx);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_rotate) (lua_State *L, int idx, int n);LUA_API void  (lua_copy) (lua_State *L, int fromidx, int toidx);LUA_API int   (lua_checkstack) (lua_State *L, int n); 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_isinteger) (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 lua_Number      (lua_tonumberx) (lua_State *L, int idx, int *isnum);LUA_API lua_Integer     (lua_tointegerx) (lua_State *L, int idx, int *isnum);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_rawlen) (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);  /*** Comparison and arithmetic functions*/ #define LUA_OPADD	0	/* ORDER TM, ORDER OP */#define LUA_OPSUB	1#define LUA_OPMUL	2#define LUA_OPMOD	3#define LUA_OPPOW	4#define LUA_OPDIV	5#define LUA_OPIDIV	6#define LUA_OPBAND	7#define LUA_OPBOR	8#define LUA_OPBXOR	9#define LUA_OPSHL	10#define LUA_OPSHR	11#define LUA_OPUNM	12#define LUA_OPBNOT	13 LUA_API void  (lua_arith) (lua_State *L, int op); #define LUA_OPEQ	0#define LUA_OPLT	1#define LUA_OPLE	2 LUA_API int   (lua_rawequal) (lua_State *L, int idx1, int idx2);LUA_API int   (lua_compare) (lua_State *L, int idx1, int idx2, int op);  /*** 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 const char *(lua_pushlstring) (lua_State *L, const char *s, size_t len);LUA_API const char *(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 int (lua_getglobal) (lua_State *L, const char *name);LUA_API int (lua_gettable) (lua_State *L, int idx);LUA_API int (lua_getfield) (lua_State *L, int idx, const char *k);LUA_API int (lua_geti) (lua_State *L, int idx, lua_Integer n);LUA_API int (lua_rawget) (lua_State *L, int idx);LUA_API int (lua_rawgeti) (lua_State *L, int idx, lua_Integer n);LUA_API int (lua_rawgetp) (lua_State *L, int idx, const void *p); 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 int  (lua_getuservalue) (lua_State *L, int idx);  /*** set functions (stack -> Lua)*/LUA_API void  (lua_setglobal) (lua_State *L, const char *name);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_seti) (lua_State *L, int idx, lua_Integer n);LUA_API void  (lua_rawset) (lua_State *L, int idx);LUA_API void  (lua_rawseti) (lua_State *L, int idx, lua_Integer n);LUA_API void  (lua_rawsetp) (lua_State *L, int idx, const void *p);LUA_API int   (lua_setmetatable) (lua_State *L, int objindex);LUA_API void  (lua_setuservalue) (lua_State *L, int idx);  /*** 'load' and 'call' functions (load and run Lua code)*/LUA_API void  (lua_callk) (lua_State *L, int nargs, int nresults,                           lua_KContext ctx, lua_KFunction k);#define lua_call(L,n,r)		lua_callk(L, (n), (r), 0, NULL) LUA_API int   (lua_pcallk) (lua_State *L, int nargs, int nresults, int errfunc,                            lua_KContext ctx, lua_KFunction k);#define lua_pcall(L,n,r,f)	lua_pcallk(L, (n), (r), (f), 0, NULL) LUA_API int   (lua_load) (lua_State *L, lua_Reader reader, void *dt,                          const char *chunkname, const char *mode); LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data, int strip);  /*** coroutine functions*/LUA_API int  (lua_yieldk)     (lua_State *L, int nresults, lua_KContext ctx,                               lua_KFunction k);LUA_API int  (lua_resume)     (lua_State *L, lua_State *from, int narg);LUA_API int  (lua_status)     (lua_State *L);LUA_API int (lua_isyieldable) (lua_State *L); #define lua_yield(L,n)		lua_yieldk(L, (n), 0, NULL)  /*** 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#define LUA_GCISRUNNING		9 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 void  (lua_len)    (lua_State *L, int idx); LUA_API size_t   (lua_stringtonumber) (lua_State *L, const char *s); 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_getextraspace(L)	((void *)((char *)(L) - LUA_EXTRASPACE)) #define lua_tonumber(L,i)	lua_tonumberx(L,(i),NULL)#define lua_tointeger(L,i)	lua_tointegerx(L,(i),NULL) #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_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_pushglobaltable(L)  \	lua_rawgeti(L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS) #define lua_tostring(L,i)	lua_tolstring(L, (i), NULL)  #define lua_insert(L,idx)	lua_rotate(L, (idx), 1) #define lua_remove(L,idx)	(lua_rotate(L, (idx), -1), lua_pop(L, 1)) #define lua_replace(L,idx)	(lua_copy(L, -1, (idx)), lua_pop(L, 1)) /* }============================================================== */  /*** {==============================================================** compatibility macros for unsigned conversions** ===============================================================*/#if defined(LUA_COMPAT_APIINTCASTS) #define lua_pushunsigned(L,n)	lua_pushinteger(L, (lua_Integer)(n))#define lua_tounsignedx(L,i,is)	((lua_Unsigned)lua_tointegerx(L,i,is))#define lua_tounsigned(L,i)	lua_tounsignedx(L,(i),NULL) #endif/* }============================================================== */ /*** {======================================================================** Debug API** =======================================================================*/  /*** Event codes*/#define LUA_HOOKCALL	0#define LUA_HOOKRET	1#define LUA_HOOKLINE	2#define LUA_HOOKCOUNT	3#define LUA_HOOKTAILCALL 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 debugger 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 void *(lua_upvalueid) (lua_State *L, int fidx, int n);LUA_API void  (lua_upvaluejoin) (lua_State *L, int fidx1, int n1,                                               int fidx2, int n2); LUA_API void (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 linedefined;	/* (S) */  int lastlinedefined;	/* (S) */  unsigned char nups;	/* (u) number of upvalues */  unsigned char nparams;/* (u) number of parameters */  char isvararg;        /* (u) */  char istailcall;	/* (t) */  char short_src[LUA_IDSIZE]; /* (S) */  /* private part */  struct CallInfo *i_ci;  /* active function */}; /* }====================================================================== */  /******************************************************************************* Copyright (C) 1994-2015 Lua.org, PUC-Rio.** 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