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-rw-r--r--lib/lua/include/lua.h800
1 files changed, 400 insertions, 400 deletions
diff --git a/lib/lua/include/lua.h b/lib/lua/include/lua.h
index 87e69af..a3def0e 100644
--- a/lib/lua/include/lua.h
+++ b/lib/lua/include/lua.h
@@ -1,400 +1,400 @@
-/*
-** $Id: lua.h,v 1.5 2004-11-27 21:43:49 pixel Exp $
-** 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 <stdarg.h>
-#include <stddef.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define LUA_VERSION "Lua 5.0"
-#define LUA_COPYRIGHT "Copyright (C) 1994-2003 Tecgraf, PUC-Rio"
-#define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo & W. Celes"
-
-
-
-/* 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))
-
-
-/* error codes for `lua_load' and `lua_pcall' */
-#define LUA_ERRRUN 1
-#define LUA_ERRFILE 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);
-
-
-/*
-** 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 */
-#ifndef LUA_NUMBER
-typedef double lua_Number;
-#else
-typedef LUA_NUMBER lua_Number;
-#endif
-
-
-/* mark for all API functions */
-#ifndef LUA_API
-#define LUA_API extern
-#endif
-
-
-/*
-** state manipulation
-*/
-LUA_API lua_State *lua_open (void);
-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 int lua_toboolean (lua_State *L, int idx);
-LUA_API const char *lua_tostring (lua_State *L, int idx);
-LUA_API size_t lua_strlen (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_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);
-
-
-/*
-** get functions (Lua -> stack)
-*/
-LUA_API void lua_gettable (lua_State *L, int idx);
-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_newtable (lua_State *L);
-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_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);
-
-/*
-** 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 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 void lua_break (lua_State *L);
-
-
-
-/*
-** ===============================================================
-** some useful macros
-** ===============================================================
-*/
-
-#define lua_boxpointer(L,u) \
- (*(void **)(lua_newuserdata(L, sizeof(void *))) = (u))
-
-#define lua_unboxpointer(L,i) (*(void **)(lua_touserdata(L, i)))
-
-#define lua_pop(L,n) lua_settop(L, -(n)-1)
-
-#define lua_register(L,n,f) \
- (lua_pushstring(L, n), \
- lua_pushcfunction(L, f), \
- lua_settable(L, LUA_GLOBALSINDEX))
-
-#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_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_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)
-
-
-
-/*
-** compatibility macros and functions
-*/
-
-
-LUA_API int lua_pushupvalues (lua_State *L);
-
-#define lua_getregistry(L) lua_pushvalue(L, LUA_REGISTRYINDEX)
-#define lua_setglobal(L,s) \
- (lua_pushstring(L, s), lua_insert(L, -2), lua_settable(L, LUA_GLOBALSINDEX))
-
-#define lua_getglobal(L,s) \
- (lua_pushstring(L, s), lua_gettable(L, LUA_GLOBALSINDEX))
-
-
-/* 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_pushstring(L, "unlocked references are obsolete"), lua_error(L), 0))
-
-#define lua_unref(L,ref) luaL_unref(L, LUA_REGISTRYINDEX, (ref))
-
-#define lua_getref(L,ref) lua_rawgeti(L, LUA_REGISTRYINDEX, ref)
-
-
-
-/*
-** {======================================================================
-** 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 "%.14g"
-#endif
-
-/* }====================================================================== */
-
-
-/*
-** {======================================================================
-** 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 */
-};
-
-#ifdef __cplusplus
-}
-#endif
-
-/* }====================================================================== */
-
-
-/******************************************************************************
-* Copyright (C) 1994-2003 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
+/*
+** $Id: lua.h,v 1.6 2004-11-27 21:46:06 pixel Exp $
+** 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 <stdarg.h>
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define LUA_VERSION "Lua 5.0"
+#define LUA_COPYRIGHT "Copyright (C) 1994-2003 Tecgraf, PUC-Rio"
+#define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo & W. Celes"
+
+
+
+/* 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))
+
+
+/* error codes for `lua_load' and `lua_pcall' */
+#define LUA_ERRRUN 1
+#define LUA_ERRFILE 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);
+
+
+/*
+** 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 */
+#ifndef LUA_NUMBER
+typedef double lua_Number;
+#else
+typedef LUA_NUMBER lua_Number;
+#endif
+
+
+/* mark for all API functions */
+#ifndef LUA_API
+#define LUA_API extern
+#endif
+
+
+/*
+** state manipulation
+*/
+LUA_API lua_State *lua_open (void);
+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 int lua_toboolean (lua_State *L, int idx);
+LUA_API const char *lua_tostring (lua_State *L, int idx);
+LUA_API size_t lua_strlen (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_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);
+
+
+/*
+** get functions (Lua -> stack)
+*/
+LUA_API void lua_gettable (lua_State *L, int idx);
+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_newtable (lua_State *L);
+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_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);
+
+/*
+** 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 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 void lua_break (lua_State *L);
+
+
+
+/*
+** ===============================================================
+** some useful macros
+** ===============================================================
+*/
+
+#define lua_boxpointer(L,u) \
+ (*(void **)(lua_newuserdata(L, sizeof(void *))) = (u))
+
+#define lua_unboxpointer(L,i) (*(void **)(lua_touserdata(L, i)))
+
+#define lua_pop(L,n) lua_settop(L, -(n)-1)
+
+#define lua_register(L,n,f) \
+ (lua_pushstring(L, n), \
+ lua_pushcfunction(L, f), \
+ lua_settable(L, LUA_GLOBALSINDEX))
+
+#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_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_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)
+
+
+
+/*
+** compatibility macros and functions
+*/
+
+
+LUA_API int lua_pushupvalues (lua_State *L);
+
+#define lua_getregistry(L) lua_pushvalue(L, LUA_REGISTRYINDEX)
+#define lua_setglobal(L,s) \
+ (lua_pushstring(L, s), lua_insert(L, -2), lua_settable(L, LUA_GLOBALSINDEX))
+
+#define lua_getglobal(L,s) \
+ (lua_pushstring(L, s), lua_gettable(L, LUA_GLOBALSINDEX))
+
+
+/* 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_pushstring(L, "unlocked references are obsolete"), lua_error(L), 0))
+
+#define lua_unref(L,ref) luaL_unref(L, LUA_REGISTRYINDEX, (ref))
+
+#define lua_getref(L,ref) lua_rawgeti(L, LUA_REGISTRYINDEX, ref)
+
+
+
+/*
+** {======================================================================
+** 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 "%.14g"
+#endif
+
+/* }====================================================================== */
+
+
+/*
+** {======================================================================
+** 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 */
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+/* }====================================================================== */
+
+
+/******************************************************************************
+* Copyright (C) 1994-2003 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
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