Re: calling lua functions from C which use libraries
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- Subject: Re: calling lua functions from C which use libraries
- From: Tassilo von Parseval <tassilo.von.parseval@...>
- Date: 2004年6月14日 11:37:11 +0200
Hi!
On Mon, Jun 14, 2004 at 10:01:30AM +0100 Jamie Webb wrote:
> On Monday 14 June 2004 09:38, Tassilo von Parseval wrote:
> > Hi everyone,
> >
> > I am currently working on an Inline::Lua module for Perl and I need some
> > help on triggering lua functions from C when those functions make use of
> > lua's shipped library. I did a rather thorough scan through the mailing
> > list archive, but apparently this issue hasn't yet been brought up.
>
> You just need to use luaopen_base(L) and friends after you've called
> lua_open(). See section 5 of the manual.
Actually, my code is already doing this. Sorry for having omitted the
code where I create the Lua interpreter. The constructor does roughly
this:
static lua_State *INTERPRETER;
...
lua_State *
interpreter (CLASS, ...)
char *CLASS;
CODE:
{
...
RETVAL = INTERPRETER = lua_open();
if (luaopen_loadlib(INTERPRETER))
croak("Error loading standard library");
}
OUTPUT:
RETVAL
To put things in context, the sequence of actions in my code is this:
- L = lua_open
- luaopen_loadlib(L)
- lua_dobuffer(L, code, len, "...")
- lua_getglobal(L, funcname)
- <push values> with lua_push*
- lua_pcall(L, nargs, LUA_MULTRET, 0)
- output: lua_tostring(L, -1)
In principle I do agree, though. It should be a matter as easy as adding
one of the calls to luaopen_*.
Tassilo
--
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