Re[2]: Directors and returning by value.

Hello Mark,

Thursday, November 13, 2003, 8:16:02 PM, you wrote:

MR> Hi Kerim,

MR> What version of SWIG are you using?
1.3.19

MR> SWIG cvs parses your
MR> interface without any warnings on my machine, and does the
MR> right thing in the python test.
Cool!
Tomorrow I WILL compile cvs version.

MR> Note that if you ever get 
MR> warning 461, SWIG will not generate any director stubs for 
MR> the method.  So the result you get in your Python test is 
MR> understandable, and the only question is what is causing the
MR> warning.
Thanks for clarification and for good news.

Best regards,
 Kerim                            mailto:warkid@xxxxxxxxx


MR> Cheers,
MR> Mark


MR> On Thu, Nov 13, 2003 at 05:55:55PM +0300, Kerim Borchaev wrote:
>> Hello swig,
>> 
>>   SWIG doesn't wrap for directors methods that return objects by
>>   value?
>> 
>> This code:
>> //main.i
>> %module(directors="1") test
>> 
>> %feature("director");
>> %inline %{
>> struct D{
>>     int value;
>>     };
>>     
>> struct C{
>>     virtual ~C(){}
>>     virtual D method(){
>>         D d;
>>         d.value = 7;
>>         return d;
>>         }
>>     };
>>     
>> int getValue(C&o){
>>     D d = o.method();
>>     return d.value;
>>     }
>> %}
>> //////////////////////////
>> 
>> Produces this warning:
>> 
>> main.i:29: Warning(461): Unable to return type D in director method 
>> C::method (s
>> kipping method).
>> 
>> And works like this:
>> 
>> Python 2.3.2 (#49, Oct  2 2003, 20:02:00) [MSC v.1200 32 bit (Intel)] on 
>> win32
>> Type "help", "copyright", "credits" or "license" for more information.
>> >>> import test
>> >>> from test import *
>> >>> class Derived(C):
>> ...     def method(self):
>> ...             d = D()
>> ...             d.value = 13
>> ...             return d
>> ...
>> >>> getValue(Derived())#should return 13
>> 7
>> 
>> 
>> 
>> Best regards,
>>  Kerim                          mailto:warkid@xxxxxxxxx
>> 
>> 
>> _______________________________________________
>> Swig maillist  -  Swig@xxxxxxxxxxxxxxx
>> http://mailman.cs.uchicago.edu/mailman/listinfo/swig


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