/* ** $Id: lua.h,v 1.192 2004/06/04 15:30:53 roberto Exp roberto $ ** Lua - An Extensible Extension Language ** Tecgraf: Computer Graphics Technology Group, PUC-Rio, Brazil ** http://www.lua.org mailto:info@lua.org ** See Copyright Notice at the end of this file */ #ifndef lua_h #define lua_h #include #include #include "luaconf.h" #define LUA_VERSION "Lua 5.1 (work)" #define LUA_COPYRIGHT "Copyright (C) 1994-2004 Tecgraf, PUC-Rio" #define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo & W. Celes" /* mark for precompiled code (`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_GLOBALSINDEX (-10001) #define lua_upvalueindex(i) (LUA_GLOBALSINDEX-(i)) /* return codes for `lua_pcall', `lua_resume', and `lua_threadstatus' */ #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_Chunkreader) (lua_State *L, void *ud, size_t *sz); typedef int (*lua_Chunkwriter) (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 */ #ifdef 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_tostring (lua_State *L, int idx); LUA_API size_t lua_objsize (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_Chunkreader reader, void *dt, const char *chunkname); LUA_API int lua_dump (lua_State *L, lua_Chunkwriter 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_threadstatus (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_GCSTEP 4 LUA_API int lua_gc (lua_State *L, int what, int data); /* ** miscellaneous functions */ LUA_API const char *lua_version (void); 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); /* ** =============================================================== ** 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_objsize(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) /* ** 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) /* ** {====================================================================== ** 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 */ 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); #define LUA_IDSIZE 60 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) */ char short_src[LUA_IDSIZE]; /* (S) */ /* private part */ int i_ci; /* active function */ }; /* }====================================================================== */ /****************************************************************************** * Copyright (C) 1994-2004 Tecgraf, 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