/* ** $Id: lua.h,v 1.15 1998/02/12 19:23:32 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/ */ /********************************************************************* * Copyright (c) 1994-1998 TeCGraf, PUC-Rio. * Written by Waldemar Celes Filho, Roberto Ierusalimschy and * Luiz Henrique de Figueiredo. * All rights reserved. * * Permission is hereby granted, without written agreement and with� * out license or royalty fees, to use, copy, modify, and distribute * this software and its documentation for any purpose, subject to * the following conditions: * * The above copyright notice and this permission notice shall ap� * pear in all copies or substantial portions of this software. * * The name "Lua" cannot be used for any modified form of this soft� * ware that does not originate from the authors. Nevertheless, the * name "Lua" may and should be used to designate the language im� * plemented and described in this package, even if embedded in any * other system, as long as its syntax and semantics remain un� * changed. * * 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 modifica� * tions. In no event shall TeCGraf, PUC-Rio, or the authors be li� * able to any party for direct, indirect, special, incidental, or * consequential damages arising out of the use of this software and * its documentation. *********************************************************************/ #ifndef lua_h #define lua_h #define LUA_VERSION "Lua 3.1 (alpha)" #define LUA_COPYRIGHT "Copyright (C) 1994-1998 TeCGraf" #define LUA_AUTHORS "W. Celes, R. Ierusalimschy & L. H. de Figueiredo" #define LUA_NOOBJECT 0 #define LUA_ANYTAG (-1) typedef void (*lua_CFunction) (void); typedef unsigned int lua_Object; void lua_open (void); void lua_close (void); lua_Object lua_settagmethod (int tag, char *event); /* In: new method */ lua_Object lua_gettagmethod (int tag, char *event); lua_Object lua_seterrormethod (void); /* In: new method */ int lua_newtag (void); int lua_copytagmethods (int tagto, int tagfrom); void lua_settag (int tag); /* In: object */ void lua_error (char *s); int lua_dofile (char *filename); /* Out: returns */ int lua_dostring (char *string); /* Out: returns */ int lua_callfunction (lua_Object f); /* In: parameters; Out: returns */ void lua_beginblock (void); void lua_endblock (void); lua_Object lua_lua2C (int number); #define lua_getparam(_) lua_lua2C(_) #define lua_getresult(_) lua_lua2C(_) int lua_isnil (lua_Object object); int lua_istable (lua_Object object); int lua_isuserdata (lua_Object object); int lua_iscfunction (lua_Object object); int lua_isnumber (lua_Object object); int lua_isstring (lua_Object object); int lua_isfunction (lua_Object object); double lua_getnumber (lua_Object object); char *lua_getstring (lua_Object object); long lua_getstrlen (lua_Object object); lua_CFunction lua_getcfunction (lua_Object object); void *lua_getuserdata (lua_Object object); void lua_pushnil (void); void lua_pushnumber (double n); void lua_pushlstr (char *s, long len); void lua_pushstring (char *s); void lua_pushCclosure (lua_CFunction fn, int n); void lua_pushusertag (void *u, int tag); void lua_pushobject (lua_Object object); lua_Object lua_pop (void); lua_Object lua_getglobal (char *name); lua_Object lua_rawgetglobal (char *name); void lua_setglobal (char *name); /* In: value */ void lua_rawsetglobal (char *name); /* In: value */ void lua_settable (void); /* In: table, index, value */ void lua_rawsettable (void); /* In: table, index, value */ lua_Object lua_gettable (void); /* In: table, index */ lua_Object lua_rawgettable (void); /* In: table, index */ int lua_tag (lua_Object object); int lua_ref (int lock); /* In: value */ lua_Object lua_getref (int ref); void lua_unref (int ref); lua_Object lua_createtable (void); long lua_collectgarbage (long limit); /* =============================================================== */ /* some useful macros/derived functions */ int (lua_call) (char *name); #define lua_call(name) lua_callfunction(lua_getglobal(name)) void (lua_pushref) (int ref); #define lua_pushref(ref) lua_pushobject(lua_getref(ref)) int (lua_refobject) (lua_Object o, int l); #define lua_refobject(o,l) (lua_pushobject(o), lua_ref(l)) void (lua_register) (char *n, lua_CFunction f); #define lua_register(n,f) (lua_pushcfunction(f), lua_setglobal(n)) void (lua_pushuserdata) (void *u); #define lua_pushuserdata(u) lua_pushusertag(u, 0) void (lua_pushcfunction) (lua_CFunction f); #define lua_pushcfunction(f) lua_pushCclosure(f, 0) int (lua_clonetag) (int t); #define lua_clonetag(t) lua_copytagmethods(lua_newtag(), (t)) /* ========================================================================== ** for compatibility with old versions. Avoid using these macros/functions ** If your program does need any of these, define LUA_COMPAT2_5 */ #ifdef LUA_COMPAT2_5 lua_Object lua_setfallback (char *event, lua_CFunction fallback); #define lua_storeglobal lua_setglobal #define lua_type lua_tag #define lua_lockobject(o) lua_refobject(o,1) #define lua_lock() lua_ref(1) #define lua_getlocked lua_getref #define lua_pushlocked lua_pushref #define lua_unlock lua_unref #define lua_pushliteral(o) lua_pushstring(o) #define lua_getindexed(o,n) (lua_pushobject(o), lua_pushnumber(n), lua_gettable()) #define lua_getfield(o,f) (lua_pushobject(o), lua_pushstring(f), lua_gettable()) #define lua_copystring(o) (strdup(lua_getstring(o))) #define lua_getsubscript lua_gettable #define lua_storesubscript lua_settable #endif #endif