Re: [Swig-user] %exception

[William S F. <ws...@fu...>]

Bob Smithson wrote:
> I am using Swig 1.3 (to wrap C++ to Python).  Although I have
> successfully used the %exception
> directive in the 'targeted' form:
> 
> %exception C::f {
>  ...
> }
> 
> I have never got it to work with the 'catch-all' form:
> 
> %exception {
>  ...
> }
> 
> There is no difference in the code I am placing in the two versions.
> 
> My understanding is that any classes in the .i file that follow the
> second form of the directive should have all their member functions in
> the *_wrap.cc file modified to include the specified exception
> handling code.  However, the directive seems to get ignored.  There
> are no warnings from running Swig, but the exception handling code
> does not get added to the wrapper code as in the other case.
> 
> Although I could specify the directive for each function individually, some of
> the interfaces are large so this would dominate the .i file and be a
> maintenance headache.
> 
> Is there some magic I am missing or is this a known problem?
> 
The global %exception feature should work. %exception is just a feature 
(called "except") and perhaps you have some other feature taking 
precedence? Read about features here where it has references to the 
matching rules used:
http://www.swig.org/Doc2.0/Customization.html and the matching rules

William