Re: How to get the attributes of a lua class, without their names, using luabind

Hi,

I don't have such problem (using luabind-deboostified fork). Could you 
show the code which causes an infinite loop? Which fork do you use?

On 12/11/2015 3:00 PM, [email protected] wrote:
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>     1. Re: How to get the attributes of a lua class without their
>        names, using luabind (Crashy)
>
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> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 10 Dec 2015 05:07:38 -0700 (MST)
> From: Crashy <[email protected]>
> Subject: Re: [luabind] How to get the attributes of a lua class
> 	without their names, using luabind
> To: [email protected]
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset=us-ascii
>
> Hi !
>
> I hate to 'bump' very old topics, but I'm facing the same problem while
> writing a lua debugger.
> I can access values by name, but using the iterator results in an infinite
> loop.
> Iterators are doing well when the object is a simple table though, it only
> fails when the object is a luabind class.
>
> Does anybody has a solution to iterate over member variables of a luabind
> class ?
>
> Thanks !
>
>
> Thibault Ehrhart wrote
>> Hello everyone,
>>
>> I have a Lua class (defined using luabind's 'class' keyword) and I'd like
>> to get the value of the attributes defined in Lua, with C++.
>>
>> In the code below, I've defined a class, created an instance "foo" and set
>> a custom attribute "bar" to that instance. Finally, I am calling a C++
>> function which has to print the attributes of the instance passed as a
>> parameter.
>>
>> Here's the Lua code :
>>
>>      class 'MyLuaClass'
>>      function MyLuaClass:__init() end
>>
>>      foo = MyLuaClass()
>>      foo.bar = "baz";
>>      PrintAttributes(foo);
>>
>> And now the C++ code of the PrintAttributes function, obj is a class
>> instance:
>>
>>      void PrintAttributes(luabind::object &obj)
>>      {
>>          // Direct access works
>>          std::cout << obj["bar"] << std::endl; // Will print "baz" :-)
>>
>>          // But what if I don't know the name of the variable(s)?
>>          for (luabind::iterator it(obj); it != luabind::iterator(); ++it)
>>          {
>>              // Doesn't work since obj is an userdata
>>          }
>>      }
>>
>> I've also tried to use class_info but it only works with properties
>> defined
>> in a C++ class. Is there a way to access those defined with Lua?
>>
>> Regards,
>
>
>
>
>
> --
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> Sent from the Lua C++ Bind mailing list archive at Nabble.com.
>
>
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-- 
Best regards, Pavel Kovalenko.

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