RE: [ANNOUNCE] Lua 5.0 (beta) now available
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- Subject: RE: [ANNOUNCE] Lua 5.0 (beta) now available
- From: Ignacio Castaño <castanyo@...>
- Date: 2002年12月19日 13:54:15 +0100 (CET)
Benoit Germain wrote:
> Another solution, much more straightforward, would be that LUA had
> something
> equivalent to lua_pushupvalues() in its API, but instead of reading the
> upvalues of the current call frame, being able to get the upvalues of a
> cclosure at a given stack index.
Some time ago I posted:
LUA_API void lua_getupvalue (lua_State *L, int index, int upvalue) {
StkId o;
lua_lock(L);
o = luaA_indexAcceptable(L, index);
if( o==NULL || !iscfunction(o) )
setnilvalue(L->top);
else {
Closure *cl = clvalue(o);
if( upvalue<0 || upvalue >= cl->c.nupvalues )
setnilvalue(L->top);
else
setobj(L->top, &cl->c.upvalue[upvalue]);
}
api_incr_top(L);
lua_unlock(L);
}
Ignacio Castaño
castanyo@yahoo.es
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