mirror of https://github.com/lua/lua
329 lines
9.6 KiB
C
329 lines
9.6 KiB
C
/*
|
|
** $Id: lua.h,v 1.1 2001/11/29 22:14:34 rieru Exp rieru $
|
|
** Lua - An Extensible Extension Language
|
|
** TeCGraf: Grupo de Tecnologia em Computacao Grafica, PUC-Rio, Brazil
|
|
** e-mail: info@lua.org
|
|
** www: http://www.lua.org
|
|
** See Copyright Notice at the end of this file
|
|
*/
|
|
|
|
|
|
#ifndef lua_h
|
|
#define lua_h
|
|
|
|
|
|
/* definition of `size_t' */
|
|
#include <stddef.h>
|
|
|
|
|
|
|
|
#define LUA_VERSION "Lua 4.1 (beta)"
|
|
#define LUA_COPYRIGHT "Copyright (C) 1994-2001 TeCGraf, PUC-Rio"
|
|
#define LUA_AUTHORS "W. Celes, R. Ierusalimschy & L. H. de Figueiredo"
|
|
|
|
|
|
/* name of global variable with error handler */
|
|
#define LUA_ERRORMESSAGE "_ERRORMESSAGE"
|
|
|
|
|
|
/* option for multiple returns in `lua_call' */
|
|
#define LUA_MULTRET (-1)
|
|
|
|
|
|
/*
|
|
** pseudo-indices
|
|
*/
|
|
#define LUA_REGISTRYINDEX (-10000)
|
|
#define LUA_GLOBALSINDEX (-10001)
|
|
#define lua_upvalueindex(i) (LUA_GLOBALSINDEX-(i))
|
|
|
|
|
|
/* error codes for `lua_do*' and the like */
|
|
#define LUA_ERRRUN 1
|
|
#define LUA_ERRFILE 2
|
|
#define LUA_ERRSYNTAX 3
|
|
#define LUA_ERRMEM 4
|
|
#define LUA_ERRERR 5
|
|
|
|
/* weak-table modes */
|
|
#define LUA_WEAK_KEY 1
|
|
#define LUA_WEAK_VALUE 2
|
|
|
|
|
|
typedef struct lua_State lua_State;
|
|
|
|
typedef int (*lua_CFunction) (lua_State *L);
|
|
|
|
|
|
|
|
/*
|
|
** basic types
|
|
*/
|
|
#define LUA_TNONE (-1)
|
|
|
|
#define LUA_TUSERDATA 0
|
|
#define LUA_TNIL 1
|
|
#define LUA_TNUMBER 2
|
|
#define LUA_TBOOLEAN 3
|
|
#define LUA_TSTRING 4
|
|
#define LUA_TTABLE 5
|
|
#define LUA_TFUNCTION 6
|
|
|
|
|
|
/* 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
|
|
|
|
|
|
/* Lua numerical type */
|
|
#ifndef LUA_NUMBER
|
|
#define LUA_NUMBER double
|
|
#endif
|
|
typedef LUA_NUMBER lua_Number;
|
|
|
|
|
|
/* mark for all API functions */
|
|
#ifndef LUA_API
|
|
#define LUA_API extern
|
|
#endif
|
|
|
|
|
|
/*
|
|
** state manipulation
|
|
*/
|
|
LUA_API lua_State *lua_newthread (lua_State *L, int stacksize);
|
|
LUA_API void lua_close (lua_State *L);
|
|
|
|
|
|
/*
|
|
** basic stack manipulation
|
|
*/
|
|
LUA_API int lua_gettop (lua_State *L);
|
|
LUA_API void lua_settop (lua_State *L, int index);
|
|
LUA_API void lua_pushvalue (lua_State *L, int index);
|
|
LUA_API void lua_remove (lua_State *L, int index);
|
|
LUA_API void lua_insert (lua_State *L, int index);
|
|
LUA_API int lua_stackspace (lua_State *L);
|
|
|
|
|
|
/*
|
|
** access functions (stack -> C)
|
|
*/
|
|
|
|
LUA_API int lua_isnumber (lua_State *L, int index);
|
|
LUA_API int lua_istrue (lua_State *L, int index);
|
|
LUA_API int lua_isstring (lua_State *L, int index);
|
|
LUA_API int lua_iscfunction (lua_State *L, int index);
|
|
LUA_API int lua_type (lua_State *L, int index);
|
|
LUA_API const char *lua_typename (lua_State *L, int type);
|
|
|
|
LUA_API int lua_equal (lua_State *L, int index1, int index2);
|
|
LUA_API int lua_lessthan (lua_State *L, int index1, int index2);
|
|
|
|
LUA_API lua_Number lua_tonumber (lua_State *L, int index);
|
|
LUA_API int lua_toboolean (lua_State *L, int index);
|
|
LUA_API const char *lua_tostring (lua_State *L, int index);
|
|
LUA_API size_t lua_strlen (lua_State *L, int index);
|
|
LUA_API lua_CFunction lua_tocfunction (lua_State *L, int index);
|
|
LUA_API void *lua_touserdata (lua_State *L, int index);
|
|
LUA_API const void *lua_topointer (lua_State *L, int index);
|
|
|
|
|
|
/*
|
|
** 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_pushlstring (lua_State *L, const char *s, size_t len);
|
|
LUA_API void lua_pushstring (lua_State *L, const char *s);
|
|
LUA_API void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n);
|
|
LUA_API void lua_pushboolean (lua_State *L, int b);
|
|
|
|
|
|
/*
|
|
** get functions (Lua -> stack)
|
|
*/
|
|
LUA_API void lua_getstr (lua_State *L, int index, const char *name);
|
|
LUA_API void lua_gettable (lua_State *L, int index);
|
|
LUA_API void lua_rawget (lua_State *L, int index);
|
|
LUA_API void lua_rawgeti (lua_State *L, int index, int n);
|
|
LUA_API void lua_newtable (lua_State *L);
|
|
LUA_API void lua_geteventtable (lua_State *L, int objindex);
|
|
|
|
|
|
/*
|
|
** set functions (stack -> Lua)
|
|
*/
|
|
LUA_API void lua_setstr (lua_State *L, int index, const char *name);
|
|
LUA_API void lua_settable (lua_State *L, int index);
|
|
LUA_API void lua_rawset (lua_State *L, int index);
|
|
LUA_API void lua_rawseti (lua_State *L, int index, int n);
|
|
LUA_API void lua_setglobals (lua_State *L);
|
|
LUA_API void lua_seteventtable (lua_State *L, int objindex);
|
|
|
|
|
|
/*
|
|
** `load' and `do' functions (load and run Lua code)
|
|
*/
|
|
LUA_API int lua_call (lua_State *L, int nargs, int nresults);
|
|
LUA_API void lua_rawcall (lua_State *L, int nargs, int nresults);
|
|
LUA_API int lua_loadfile (lua_State *L, const char *filename);
|
|
LUA_API int lua_dofile (lua_State *L, const char *filename);
|
|
LUA_API int lua_dostring (lua_State *L, const char *str);
|
|
LUA_API int lua_loadbuffer (lua_State *L, const char *buff, size_t size,
|
|
const char *name);
|
|
LUA_API int lua_dobuffer (lua_State *L, const char *buff, size_t size,
|
|
const char *name);
|
|
|
|
/*
|
|
** Garbage-collection functions
|
|
*/
|
|
LUA_API int lua_getgcthreshold (lua_State *L);
|
|
LUA_API int lua_getgccount (lua_State *L);
|
|
LUA_API void lua_setgcthreshold (lua_State *L, int newthreshold);
|
|
|
|
/*
|
|
** miscellaneous functions
|
|
*/
|
|
|
|
LUA_API void lua_error (lua_State *L, const char *s);
|
|
|
|
LUA_API int lua_next (lua_State *L, int index);
|
|
LUA_API int lua_getn (lua_State *L, int index);
|
|
|
|
LUA_API void lua_concat (lua_State *L, int n);
|
|
|
|
LUA_API void *lua_newuserdata (lua_State *L, size_t size);
|
|
LUA_API void lua_newuserdatabox (lua_State *L, void *u);
|
|
|
|
LUA_API void lua_setweakmode (lua_State *L, int mode);
|
|
LUA_API int lua_getweakmode (lua_State *L, int index);
|
|
|
|
|
|
|
|
/*
|
|
** ===============================================================
|
|
** some useful macros
|
|
** ===============================================================
|
|
*/
|
|
|
|
#define lua_open(n) lua_newthread(NULL, (n))
|
|
|
|
#define lua_pop(L,n) lua_settop(L, -(n)-1)
|
|
|
|
#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_isuserdata(L,n) (lua_type(L,n) == LUA_TUSERDATA)
|
|
#define lua_isnil(L,n) (lua_type(L,n) == LUA_TNIL)
|
|
#define lua_isboolean(L,n) (lua_type(L,n) == LUA_TBOOLEAN)
|
|
#define lua_isnone(L,n) (lua_type(L,n) == LUA_TNONE)
|
|
|
|
#define lua_pushliteral(L, s) lua_pushlstring(L, "" s, \
|
|
(sizeof(s)/sizeof(char))-1)
|
|
|
|
#define lua_getregistry(L) lua_pushvalue(L, LUA_REGISTRYINDEX)
|
|
#define lua_getglobals(L) lua_pushvalue(L, LUA_GLOBALSINDEX)
|
|
#define lua_getglobal(L,s) lua_getstr(L, LUA_GLOBALSINDEX, s)
|
|
#define lua_setglobal(L,s) lua_setstr(L, LUA_GLOBALSINDEX, s)
|
|
|
|
|
|
|
|
/*
|
|
** compatibility macros and functions
|
|
*/
|
|
|
|
LUA_API void lua_pushupvalues (lua_State *L);
|
|
|
|
|
|
/* compatibility with ref system */
|
|
|
|
/* pre-defined references */
|
|
#define LUA_NOREF (-2)
|
|
#define LUA_REFNIL (-1)
|
|
|
|
#define lua_ref(L,lock) ((lock) ? luaL_ref(L, LUA_REGISTRYINDEX) : \
|
|
(lua_error(L, "unlocked references are obsolete"), 0))
|
|
|
|
#define lua_unref(L,ref) luaL_unref(L, LUA_REGISTRYINDEX, (ref))
|
|
|
|
#define lua_getref(L,ref) lua_rawgeti(L, LUA_REGISTRYINDEX, ref)
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
** {======================================================================
|
|
** useful definitions for Lua kernel and libraries
|
|
** =======================================================================
|
|
*/
|
|
|
|
/* formats for Lua numbers */
|
|
#ifndef LUA_NUMBER_SCAN
|
|
#define LUA_NUMBER_SCAN "%lf"
|
|
#endif
|
|
|
|
#ifndef LUA_NUMBER_FMT
|
|
#define LUA_NUMBER_FMT "%.16g"
|
|
#endif
|
|
|
|
/* function to convert a lua_Number to a string */
|
|
#ifndef lua_number2str
|
|
#define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n))
|
|
#endif
|
|
|
|
/* function to convert a string to a lua_Number */
|
|
#ifndef lua_str2number
|
|
#define lua_str2number(s,p) strtod((s), (p))
|
|
#endif
|
|
|
|
/* }====================================================================== */
|
|
|
|
|
|
|
|
/******************************************************************************
|
|
* Copyright (C) 1994-2001 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.
|
|
******************************************************************************/
|
|
|