Re: binding lua-c++ with swig or anything else...

[Tyranni <tyranni@...>]

this is a lua problem, not a swig one.

l.insert should probably be l:insert

the colon operator means that you are invoking the method insert on l.
it is syntactic sugar for l.insert( l, item )
http://www.lua.org/manual/5.0/manual.html#2.5.8

i presume the SWIG example code is wrong....
let me know if you try this change and find that that's the case.

-tyranni





Jason Rego wrote:
> Well I got it working, the missing magic was to put an extern "C" in the
> Example_Init extern.  Now I'm testing the use of classes, and I'm not able
> to call any member function of my C++ class other than the constructor which
> does work.
> 
> I'm using the example right out of
> http://www.swig.org/Doc1.3/Lua.html#Lua_nn14 in example.h I have:
> class List {
> protected:
>    char Names[5][25];
> 
> public:
>    List();
> //   ~List();
> //   int  search(char *item);
>    void insert(char *item);
> //   void remove(char *item);
>    char *get(int n);
>    int  length;
> };
> 
> In bind.i I have:
> class List {
> public:
>   List();
>   void insert(char *item);
>   char *get(int n);
>   int  length;
> };
> 
> And in the lua script I have:
> print("This is a Lua Script");
> l = example.List();
> print("Test1");
> l.insert("Ale");
> print("Test2");
> l.insert("Stout");
> print("Test3");
> l.insert("Lager");
> print("Test4");
> print(l.get(1));
> print(l.length);
> 
> The script seems to stop running on the first insert call (first member
> function that's not the constructor).  I hit a breakpoint in the constructor
> just fine, but no break point in the insert method ("Test1" is the last
> output seen), it just goes straight to my breakpoint after the lua_close()
> (using the simple main lua interpreter example from the previous post link).
> 
> Any ideas on why these class method calls are not functioning? Or things I
> should test out?
> 
> ------------------------------
> 
> Message: 11
> Date: Tue, 20 Dec 2005 13:48:18 -0700
> From: Jason Rego <JasonR@rainbowstudios.com>
> Subject: binding lua-c++ with swig or anything else...
> To: "'lua@bazar2.conectiva.com.br'" <lua@bazar2.conectiva.com.br>
> Message-ID: <20FBBBCACA21D511B5C400B0D017706A03BC0762@TELETYPE>
> Content-Type: text/plain; charset="us-ascii"
> 
> 
> Has anyone had success using lua<->c++ bindings with swing 1.3 on ms visual
> c++ .net 2003?  I'm building and compiling the example from
> http://www.swig.org/Doc1.3/Lua.html#Lua_nn4 (although with changing the
> parameter type of Example_Init from LuaState to lua_State) with no problem,
> but when I link I'm getting an unresolved symbol on Example_Init.
> 
> The other thing I'm not sure about is the docs talk about adding in a
> #define for LUA_EXTRALIBS but I'm not seeing a reference to this anywhere in
> the _wrap.cxx.  Attached are the files involved if that would help.
> 
> Any help on this would be greatly appreciated, it seems like I'm running
> into walls with all the different lua autobinders.  I'm unable to create the
> toluac++ windows executable and now this :)
> 
> /*
> Jason Rego
> Software Engineer
> Rainbow Studios
> jasonr@rainbowstudios.com
> */
> 
> 
>