/* ** $Id: lua.h,v 1.52 2000/05/10 16:35:18 roberto Exp roberto $ ** Lua - An Extensible Extension Language ** TeCGraf: Grupo de Tecnologia em Computacao Grafica, PUC-Rio, Brazil ** e-mail: lua@tecgraf.puc-rio.br ** www: http://www.tecgraf.puc-rio.br/lua/ ** See Copyright Notice at the end of this file */ #ifndef lua_h #define lua_h /* definition of `size_t' */ #include #define LUA_VERSION "Lua 4.0 (alpha)" #define LUA_COPYRIGHT "Copyright (C) 1994-2000 TeCGraf, PUC-Rio" #define LUA_AUTHORS "W. Celes, R. Ierusalimschy & L. H. de Figueiredo" #define LUA_ALERT "_ALERT" #define LUA_ERRORMESSAGE "_ERRORMESSAGE" #define LUA_NOREF (-2) #define LUA_REFNIL (-1) #define LUA_ANYTAG (-1) typedef struct lua_State lua_State; typedef void (*lua_CFunction) (lua_State *L); typedef struct lua_TObject *lua_Object; #define LUA_NOOBJECT ((lua_Object)0) lua_State *lua_newstate (const char *s, ...); void lua_close (lua_State *L); lua_Object lua_settagmethod (lua_State *L, int tag, const char *event); /* In: new method */ lua_Object lua_gettagmethod (lua_State *L, int tag, const char *event); int lua_newtag (lua_State *L); int lua_copytagmethods (lua_State *L, int tagto, int tagfrom); void lua_settag (lua_State *L, int tag); /* In: object */ void lua_error (lua_State *L, const char *s); int lua_dofile (lua_State *L, const char *filename); /* Out: returns */ int lua_dostring (lua_State *L, const char *str); /* Out: returns */ int lua_dobuffer (lua_State *L, const char *buff, size_t size, const char *name); /* Out: returns */ int lua_callfunction (lua_State *L, lua_Object f); /* In: parameters; Out: returns */ void lua_beginblock (lua_State *L); void lua_endblock (lua_State *L); void lua_pushglobaltable (lua_State *L); void lua_setglobaltable (lua_State *L, lua_Object newtable); lua_Object lua_lua2C (lua_State *L, int number); #define lua_getparam lua_lua2C #define lua_getresult lua_lua2C const char *lua_type (lua_State *L, lua_Object obj); int lua_isnil (lua_State *L, lua_Object obj); int lua_istable (lua_State *L, lua_Object obj); int lua_isuserdata (lua_State *L, lua_Object obj); int lua_iscfunction (lua_State *L, lua_Object obj); int lua_isnumber (lua_State *L, lua_Object obj); int lua_isstring (lua_State *L, lua_Object obj); int lua_isfunction (lua_State *L, lua_Object obj); int lua_equal (lua_State *L, lua_Object o1, lua_Object o2); double lua_getnumber (lua_State *L, lua_Object obj); const char *lua_getstring (lua_State *L, lua_Object obj); size_t lua_strlen (lua_State *L, lua_Object obj); lua_CFunction lua_getcfunction (lua_State *L, lua_Object obj); void *lua_getuserdata (lua_State *L, lua_Object obj); void lua_pushnil (lua_State *L); void lua_pushnumber (lua_State *L, double n); void lua_pushlstring (lua_State *L, const char *s, size_t len); void lua_pushstring (lua_State *L, const char *s); void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n); void lua_pushusertag (lua_State *L, void *u, int tag); void lua_pushobject (lua_State *L, lua_Object obj); lua_Object lua_pop (lua_State *L); lua_Object lua_getglobal (lua_State *L, const char *name); void lua_setglobal (lua_State *L, const char *name); /* In: value */ lua_Object lua_rawgetglobal (lua_State *L, const char *name); void lua_rawsetglobal (lua_State *L, const char *name);/* In: value */ void lua_settable (lua_State *L); /* In: table, index, value */ void lua_rawsettable (lua_State *L); /* In: table, index, value */ lua_Object lua_gettable (lua_State *L); /* In: table, index */ lua_Object lua_rawgettable (lua_State *L); /* In: table, index */ int lua_tag (lua_State *L, lua_Object obj); int lua_next (lua_State *L, lua_Object o, int i); /* Out: ref, value */ int lua_ref (lua_State *L, int lock); /* In: value */ lua_Object lua_getref (lua_State *L, int ref); void lua_unref (lua_State *L, int ref); lua_Object lua_createtable (lua_State *L); long lua_collectgarbage (lua_State *L, long limit); /* ** =============================================================== ** some useful macros ** =============================================================== */ #ifdef LUA_REENTRANT #define lua_call(L,name) lua_callfunction(L, lua_getglobal(L, name)) #define lua_pushref(L,ref) lua_pushobject(L, lua_getref(L, ref)) #define lua_refobject(L,o,l) (lua_pushobject(L, o), lua_ref(L, l)) #define lua_register(L,n,f) (lua_pushcfunction(L, f), lua_setglobal(L, n)) #define lua_pushuserdata(L,u) lua_pushusertag(L, u, 0) #define lua_pushcfunction(L,f) lua_pushcclosure(L, f, 0) #define lua_clonetag(L,t) lua_copytagmethods(L, lua_newtag(L), (t)) #else #define lua_call(name) lua_callfunction(lua_getglobal(name)) #define lua_pushref(ref) lua_pushobject(lua_getref(ref)) #define lua_refobject(o,l) (lua_pushobject(o), lua_ref(l)) #define lua_register(n,f) (lua_pushcfunction(f), lua_setglobal(n)) #define lua_pushuserdata(u) lua_pushusertag(u, 0) #define lua_pushcfunction(f) lua_pushcclosure(f, 0) #define lua_clonetag(t) lua_copytagmethods(lua_newtag(), (t)) #endif #ifndef LUA_REENTRANT /* ** =============================================================== ** Macros for single-state use ** =============================================================== */ extern lua_State *lua_state; #define lua_open() ((void)(lua_state?0:(lua_state=lua_newstate(0)))) #define lua_close() (lua_close)(lua_state) #define lua_settagmethod(tag,event) (lua_settagmethod)(lua_state, tag,event) #define lua_gettagmethod(tag,event) (lua_gettagmethod)(lua_state, tag,event) #define lua_newtag() (lua_newtag)(lua_state) #define lua_copytagmethods(tagto,tagfrom) \ (lua_copytagmethods)(lua_state, tagto,tagfrom) #define lua_settag(tag) (lua_settag)(lua_state, tag) #define lua_error(s) (lua_error)(lua_state, s) #define lua_dofile(filename) (lua_dofile)(lua_state, filename) #define lua_dostring(str) (lua_dostring)(lua_state, str) #define lua_dobuffer(b,s,n) (lua_dobuffer)(lua_state, b,s,n) #define lua_callfunction(f) (lua_callfunction)(lua_state, f) #define lua_beginblock() (lua_beginblock)(lua_state) #define lua_endblock() (lua_endblock)(lua_state) #define lua_pushglobaltable() (lua_pushglobaltable)(lua_state) #define lua_setglobaltable(t) (lua_setglobaltable)(lua_state, t) #define lua_lua2C(number) (lua_lua2C)(lua_state, number) #define lua_type(obj) (lua_type)(lua_state, obj) #define lua_isnil(obj) (lua_isnil)(lua_state, obj) #define lua_istable(obj) (lua_istable)(lua_state, obj) #define lua_isuserdata(obj) (lua_isuserdata)(lua_state, obj) #define lua_iscfunction(obj) (lua_iscfunction)(lua_state, obj) #define lua_isnumber(obj) (lua_isnumber)(lua_state, obj) #define lua_isstring(obj) (lua_isstring)(lua_state, obj) #define lua_isfunction(obj) (lua_isfunction)(lua_state, obj) #define lua_equal(o1,o2) (lua_equal)(lua_state, o1,o2) #define lua_getnumber(obj) (lua_getnumber)(lua_state, obj) #define lua_getstring(obj) (lua_getstring)(lua_state, obj) #define lua_strlen(obj) (lua_strlen)(lua_state, obj) #define lua_getcfunction(obj) (lua_getcfunction)(lua_state, obj) #define lua_getuserdata(obj) (lua_getuserdata)(lua_state, obj) #define lua_pushnil() (lua_pushnil)(lua_state) #define lua_pushnumber(n) (lua_pushnumber)(lua_state, n) #define lua_pushlstring(s,len) (lua_pushlstring)(lua_state, s,len) #define lua_pushstring(s) (lua_pushstring)(lua_state, s) #define lua_pushusertag(u,tag) (lua_pushusertag)(lua_state, u,tag) #define lua_pushobject(obj) (lua_pushobject)(lua_state, obj) #define lua_pop() (lua_pop)(lua_state) #define lua_getglobal(name) (lua_getglobal)(lua_state, name) #define lua_setglobal(name) (lua_setglobal)(lua_state, name) #define lua_rawgetglobal(name) (lua_rawgetglobal)(lua_state, name) #define lua_rawsetglobal(name) (lua_rawsetglobal)(lua_state, name) #define lua_settable() (lua_settable)(lua_state) #define lua_rawsettable() (lua_rawsettable)(lua_state) #define lua_gettable() (lua_gettable)(lua_state) #define lua_rawgettable() (lua_rawgettable)(lua_state) #define lua_tag(obj) (lua_tag)(lua_state, obj) #define lua_next(o,i) (lua_next)(lua_state, o,i) #define lua_ref(lock) (lua_ref)(lua_state, lock) #define lua_getref(ref) (lua_getref)(lua_state, ref) #define lua_unref(ref) (lua_unref)(lua_state, ref) #define lua_createtable() (lua_createtable)(lua_state) #define lua_collectgarbage(limit) (lua_collectgarbage)(lua_state, limit) /* ** the following typecast is a little dirty, but we know of no other ** way to keep compatibility with old definition of `lua_CFunction' */ #define lua_pushcclosure(fn,n) \ (lua_pushcclosure)(lua_state, (lua_CFunction)(fn), n) #endif #endif /****************************************************************************** * Copyright (C) 1994-2000 TeCGraf, PUC-Rio. All rights reserved. * * Permission is hereby granted, without written agreement and without license * or royalty fees, to use, copy, modify, and distribute this software and its * documentation for any purpose, including commercial applications, subject to * the following conditions: * * - The above copyright notice and this permission notice shall appear in all * copies or substantial portions of this software. * * - The origin of this software must not be misrepresented; you must not * claim that you wrote the original software. If you use this software in a * product, an acknowledgment in the product documentation would be greatly * appreciated (but it is not required). * * - Altered source versions must be plainly marked as such, and must not be * misrepresented as being the original software. * * The authors specifically disclaim any warranties, including, but not limited * to, the implied warranties of merchantability and fitness for a particular * purpose. The software provided hereunder is on an "as is" basis, and the * authors have no obligation to provide maintenance, support, updates, * enhancements, or modifications. In no event shall TeCGraf, PUC-Rio, or the * authors be held liable to any party for direct, indirect, special, * incidental, or consequential damages arising out of the use of this software * and its documentation. * * The Lua language and this implementation have been entirely designed and * written by Waldemar Celes Filho, Roberto Ierusalimschy and * Luiz Henrique de Figueiredo at TeCGraf, PUC-Rio. * * This implementation contains no third-party code. ******************************************************************************/