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** $Id: lua.h,v 1.22 1998/06/15 21:34:14 roberto Exp roberto $
** Lua - An Extensible Extension Language
** TeCGraf: Grupo de Tecnologia em Computacao Grafica, PUC-Rio, Brazil
** e-mail:
** www:
** See Copyright Notice at the end of this file
#ifndef lua_h
#define lua_h
#define LUA_VERSION "Lua 3.1"
#define LUA_COPYRIGHT "Copyright (C) 1994-1998 TeCGraf, PUC-Rio"
#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;
typedef struct lua_State lua_State;
extern lua_State *lua_state;
void lua_open (void);
void lua_close (void);
lua_State *lua_setstate (lua_State *st);
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_dobuffer (char *buff, int size, char *name);
/* 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_strlen (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_pushlstring (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
* Copyright (c) 1994-1998 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.