Re: Binding static methods with luabind?

Hello!,

Thanks for the wonderful explanation.

My binding ended  up like :

         //Register with luabind.
         luabind::module(L)
         [
          luabind::class_<LuaRegisterManager>("LuaRegisterManager")
    *.def("execScript",
    (void(LuaRegisterManager::*)())&LuaRegisterManager::execScript)*
          .scope
          [
           luabind::def("getInstance", &LuaRegisterManager::getInstance)
    //returns static singleton instance
           ]
          ];

It works great as you said, when performing the following Lua call:

    LuaRegisterManager.getInstance()


However, what if I would like to call "execScript" (which I registered 
as a .def in my initial binding ? )

I thought it would be something like ( from Lua ) :

    LuaRegisterManager.getInstance().execScript("script.lua")


But that returns the following error:

    Error: No matching overload found, candidates:
    void execScript(LuaRegisterManager&)


Thank you very much for all your help.

-- 
Nicolas Goles Domic
Founder & Lead Programmer
Gando Games <www.gandogames.com>



Iliya Trendafilov wrote:
> Try LuaRegisterManager*.*getInstance()
> Note there is a dot `*.*` between LuaRegisterManager and 
> getInstance(), you seem to be using colon `*:*` instead.
>
> In Lua the colon is just a syntactic sugar to mimic passing of /this 
> /pointer in OO languages, the code 
> `LuaRegisterManager*:*getInstance()` is equivalent to 
> `LuaRegisterManager*.*getInstance(LuaRegisterManager)` which is not 
> what you want.
>
>
> On Wed, Sep 15, 2010 at 7:51 PM, Nicolas Goles <[email protected] 
> <mailto:[email protected]>> wrote:
>
>     Great,
>
>     The .scope[] solved the problem ( now I have a different problem );
>
>     When I execute the Lua script I mentioned ( 1 line script )
>
>     	LuaRegisterManager:getInstance()
>
>          
>
>     I get the following Error in my Console:
>
>              Error: LuaRegisterManager* getInstance()
>
>          
>
>     Before adding the .scope [] I was getting
>
>     	Error: no static 'getInstance' in class 'LuaRegisterManager'
>
>     So I guess it's finding the static method now , but there seems to
>     be a different error this time.
>
>     I am new to Lua/Luabind so help is really welcome.
>
>     Thanks!
>
>
>     -- 
>     Nicolas Goles Domic
>     Founder & Lead Programmer
>     Gando Games <http://www.gandogames.com>
>
>
>
>     Iliya Trendafilov wrote:
>>     Hi,
>>
>>     That should do it, note the scope around the definition of
>>     getInstance
>>
>>          luabind::module(L)
>>          [
>>           luabind::class_<LuaRegisterManager>("LuaRegisterManager") //Register the class
>>           .def("execScript", (void(LuaRegisterManager::*)())&LuaRegisterManager::execScript) //method to execute a lua script
>>           .scope
>>            [
>>                def("getInstance",&LuaRegisterManager::getInstance) //returns static singleton instance
>>            ]
>>        
>>           ];
>>
>>        
>>     Invoke with LuaRegisterManager.getInstance() (i.e. dot instead of
>>     colon). A bit of explanation can be found here:
>>     http://www.rasterbar.com/products/luabind/docs.html#nested-scopes-and-static-functions
>>
>>     Hope that helps
>>
>>     On Wed, Sep 15, 2010 at 7:32 PM, Nicolas Goles
>>     <[email protected] <mailto:[email protected]>> wrote:
>>
>>         Hello,
>>
>>         I have a Singleton Class in my application, it has a member
>>         method defined like:
>>
>>         	static LuaRegisterManager* getInstance();
>>
>>         I'm trying to register this class with Luabind, and expose
>>         some methods to Lua:
>>
>>              //Register with luabind.
>>
>>              luabind::module(L)
>>
>>              [
>>
>>               luabind::class_<LuaRegisterManager>("LuaRegisterManager") //Register the class
>>
>>               .def("execScript", (void(LuaRegisterManager::*)())&LuaRegisterManager::execScript) //method to execute a lua script
>>
>>               .def("getInstance",&LuaRegisterManager::getInstance) //returns static singleton instance
>>
>>               ];
>>
>>         The problem is that if I execute the following Lua script:
>>              
>>
>>              LuaRegisterManager:getInstance()
>>
>>         I get :
>>
>>         	Error: no static 'getInstance' in class 'LuaRegisterManager'
>>
>>              
>>
>>         So I guess I'm making an error and my static getInstance()
>>         method is not being registered with luabind correctly.
>>
>>         Help is welcome :)
>>
>>         -- 
>>         Nicolas Goles Domic
>>         Founder & Lead Programmer
>>         Gando Games <http://www.gandogames.com>
>>
>>
>>         ------------------------------------------------------------------------------
>>         Start uncovering the many advantages of virtual appliances
>>         and start using them to simplify application deployment and
>>         accelerate your shift to cloud computing.
>>         http://p.sf.net/sfu/novell-sfdev2dev
>>         _______________________________________________
>>         luabind-user mailing list
>>         [email protected]
>>         <mailto:[email protected]>
>>         https://lists.sourceforge.net/lists/listinfo/luabind-user
>>
>>
>>     ------------------------------------------------------------------------
>>     ------------------------------------------------------------------------------
>>     Start uncovering the many advantages of virtual appliances and
>>     start using them to simplify application deployment and
>>     accelerate your shift to cloud computing.
>>     http://p.sf.net/sfu/novell-sfdev2dev
>>     ------------------------------------------------------------------------
>>
>>     _______________________________________________
>>     luabind-user mailing list
>>     [email protected]  <mailto:[email protected]>
>>     https://lists.sourceforge.net/lists/listinfo/luabind-user
>>        
>

------------------------------------------------------------------------------
Start uncovering the many advantages of virtual appliances
and start using them to simplify application deployment and
accelerate your shift to cloud computing.
http://p.sf.net/sfu/novell-sfdev2dev

_______________________________________________
luabind-user mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/luabind-user