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loadstring/loadfile use global environment + setfenv(0) changes 

global environment
This commit is contained in:
Roberto Ierusalimschy 2003-03-11 15:17:43 -03:00
parent 4039bf457d
commit fa4b4c1100
1 changed files with 7 additions and 12 deletions
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19
lbaselib.c
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@ -1,5 +1,5 @@
/*
** $Id: lbaselib.c,v 1.126 2003/03/11 12:08:13 roberto Exp roberto $
** $Id: lbaselib.c,v 1.127 2003/03/11 12:24:34 roberto Exp roberto $
** Basic library
** See Copyright Notice in lua.h
*/
@ -154,7 +154,9 @@ static int luaB_setfenv (lua_State *L) {
else
lua_pop(L, 2); /* remove __globals and real environment table */
lua_pushvalue(L, 2);
if (lua_setfenv(L, -2) == 0)
if (lua_isnumber(L, 1) && lua_tonumber(L, 1) == 0)
lua_replace(L, LUA_GLOBALSINDEX);
else if (lua_setfenv(L, -2) == 0)
luaL_error(L, "cannot change environment of given function");
return 0;
}
@ -246,19 +248,12 @@ static int luaB_ipairs (lua_State *L) {
static int load_aux (lua_State *L, int status) {
if (status == 0) { /* OK? */
lua_Debug ar;
lua_getstack(L, 1, &ar);
lua_getinfo(L, "f", &ar); /* get calling function */
lua_getfenv(L, -1); /* get its environment */
lua_setfenv(L, -3); /* set it as the environment of the new chunk */
lua_pop(L, 1); /* remove calling function */
if (status == 0) /* OK? */
return 1;
}
else {
lua_pushnil(L);
lua_insert(L, -2);
return 2;
lua_insert(L, -2); /* put before error message */
return 2; /* return nil plus error message */
}
}