RE: Get the function value

["Eric Ries" <eries@...>]

Take a look at lua_ref in the Lua 4.0 manual.

Eric

> -----Original Message-----
> From: owner-lua-l@tecgraf.puc-rio.br
> [mailto:owner-lua-l@tecgraf.puc-rio.br]On Behalf Of Björklund, Peter
> Sent: Tuesday, September 04, 2001 9:12 AM
> To: Multiple recipients of list
> Subject: RE: Get the function value
>
>
> Interesting code.
> But what I want to do is keep the value, so I can issue a lua_call() later
> on.
>
> /Peter
>
>
>
> -----Original Message-----
> From: RLake@oxfam.org.uk [mailto:RLake@oxfam.org.uk]
> Sent: den 4 september 2001 18:09
> To: Multiple recipients of list
> Subject: Re: Get the function value
>
>
>
> You don't get the function name, you get the function. You can then call
> it; see below
>
> > How do I get the function value from the stack?
>
> -----------------------------------
> Sample Lua code:
>
> function onTimer()
>      doStuff();
> end
>
> function onInit()
>      -- This is a C function
>      setTimer( 5.0, onTimer );
> end
>
> ----------------------------------
> C code:
>
> static int setTimer(lua_State *L)
> {
>      if ( lua_isnumber( L, 1 ) )
>           g_waitTime = lua_tonumber( L, 1 );
>
>      // lua_typename( L, lua_type( L, 2 ) )
>      // returns "function" which is what I want :)
>
> /// here is a simple way of doing it
>           lua_settop(L, 2);        /* make sure there's no more on the
> stack */
>           lua_rawcall(L, 0, 0);    /* no arguments, no return values */
> ///
>
> /* who cares what the name is?
>      g_functionName = // How do I get this parameter?
> */
>      return 0;
> }
>
> -----------------------
>
> This message sent privately....
>
> ------------------------