Typemaps for constructors?

Hi all,

I'm trying to create C# wrappers for a C++ toolkit I'm developing. This toolkit references some data types from a third-party middleware. I'm trying to avoid wrapping any part of the middleware. I've been able to accomplish this to some extent by referencing existing swig-generated C# wrappers available for the middleware. For example, for a C++ type called TENA::Middleware::SessionPtr, I have been able to use a typemap like the following to construct a C# TENA.Middleware.Session object using a pointer to the object constructed in C++:


%typemap(csout, excode=SWIGEXCODE) TYPE*, TYPE&, TYPE {
       IntPtr ptr = $imcall;$excode
       TENA.Middleware.Session ret = new TENA.Middleware.Session(ptr, true);
       return ret;
}

However, I'm having issues doing the same for data types that do not provide a default constructor. For example, regarding a type called TENA::PlatformType::LocalClassPtr, functions in the generated C++ wrapper that try to initialize a TENA:: PlatformType::LocalClassPtr object experience the following error:


[cid:[email protected]]

I can fix this error by altering the generated C++ code so that arg2 initializes using a different constructor (such as "TENA::PlatformType::LocalClassPtr arg2 = TENA::PlatformType::create(0);"), but I want to use a typemap so that SWIG generates code using this constructor automatically. Is there a typemap that can do this? Also, has anyone attempted to generate wrappers that reference other swig-generated wrappers? If so, I would greatly appreciate any thoughts on feasibility and best practices.

Thanks!
Christina Noe

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