[Swig-user] Turning return codes into exceptions

[Rob M. <rob...@vi...>]

Hello,

I am using SWIG with a fairly large C API that uses return codes on many 
functions the general structure is like this:

typedef int api_result;
const api_result success = 0;
const api_result error_type_1 = {some value};
const api_result error_type_2 = {some other value};

api_result foo1(int bar);
api_result foo2(double baz);

... and so on. I would like this to turn into something like this post-SWIG:

void foo1_wrapper(int bar)
{
    api_result result = foo1(bar);
    if(result)
    {
       throw_appropriate_exception(result);
    }
}

So I want to get rid of those return codes in the SWIG-generated 
interface and instead use them in the wrapper functions to generate 
exceptions. I can see how to do the latter part (generating exceptions 
from the return code), but is there any way to nuke the return codes 
from the SWIG interface? Obviously I could write a custom wrapper for 
each function that doesn't return the code, but that's way too much work.

Thanks,

Rob