Re: [Swig-user] C# %attributeref works for int and reference types, but not enum, float or double

[John M. <sw...@vo...>]

> I can marshal int and my own C++ classes with get/set properties using
> %attributeref. But it won't work for enum, float, or double types.
> 
> in the following example class,
> 
> oaOffset is int per typedef
> oaPoint is another C++ class that I am also wrapping
> oaOrient is an enum in both C++ and C# (underlying type int)
> 
> The relevant %attributeref statements are:
> 
> %include "attribute.i"
> %attributeref(OpenAccess_4::oaTransform, oaPoint&, offset);
> %attributeref(OpenAccess_4::oaTransform, oaOffset, xOffset);
> %attributeref(OpenAccess_4::oaTransform, oaOffset, yOffset);
> %attributeref(OpenAccess_4::oaTransform, oaOrient, orient);
> 
> And here's the C++:
> 
> namespace OpenAccess_4 {
> class OA_BASE_DLL_API oaTransform {
> public:
> // ... constructors ...
> oaPoint &offset();
> oaOffset &xOffset();
> oaOffset &yOffset();
> oaOrient &orient();
> const oaPoint &offset() const;
> oaOffset xOffset() const;
> oaOffset yOffset() const;
> oaOrient orient() const;
> 
> // ...
> };
> }
> 
> It works great, except for the enum, orient. Here is oaTransform.cs:
> 
> public class oaTransform : IDisposable {
> 
> // ...
> 
> public SWIGTYPE_p_OpenAccess_4__oaOrient orient {
> set {
> oasCSharpBasePINVOKE.oaTransform_orient_set(swigCPtr,
> SWIGTYPE_p_OpenAccess_4__oaOrient.getCPtr(value));
> }
> get {
> IntPtr cPtr = oasCSharpBasePINVOKE.oaTransform_orient_get(swigCPtr);
> SWIGTYPE_p_OpenAccess_4__oaOrient ret = (cPtr == IntPtr.Zero) ? null :
> new SWIGTYPE_p_OpenAccess_4__oaOrient(cPtr, false);
> return ret;
> }
> }
> 
> public oaPoint offset {
> set {
> oasCSharpBasePINVOKE.oaTransform_offset_set(swigCPtr,
> oaPoint.getCPtr(value));
> if (oasCSharpBasePINVOKE.SWIGPendingException.Pending) throw
> oasCSharpBasePINVOKE.SWIGPendingException.Retrieve();
> }
> get {
> oaPoint ret = new
> oaPoint(oasCSharpBasePINVOKE.oaTransform_offset_get(swigCPtr), false);
> if (oasCSharpBasePINVOKE.SWIGPendingException.Pending) throw
> oasCSharpBasePINVOKE.SWIGPendingException.Retrieve();
> return ret;
> }
> }
> 
> public int xOffset {
> set {
> oasCSharpBasePINVOKE.oaTransform_xOffset_set(swigCPtr, value);
> }
> get {
> int ret = oasCSharpBasePINVOKE.oaTransform_xOffset_get(swigCPtr);
> return ret;
> }
> }
> 
> public int yOffset {
> set {
> oasCSharpBasePINVOKE.oaTransform_yOffset_set(swigCPtr, value);
> }
> get {
> int ret = oasCSharpBasePINVOKE.oaTransform_yOffset_get(swigCPtr);
> return ret;
> }
> }
> 
> }
> 
> SWIG uses SWIGTYPE_p_OpenAccess_4__oaOrient, so it's as if oaOrient is
> undefined.
> 
> Finally, the _wrap.cxx tries some pointer operations that won't
> compile:
> 
> SWIGEXPORT void SWIGSTDCALL CSharp_oaTransform_orient_set(void *
> jarg1, void * jarg2) {
> OpenAccess_4::oaTransform *arg1 = (OpenAccess_4::oaTransform *) 0 ;
> OpenAccess_4::oaOrient *arg2 = (OpenAccess_4::oaOrient *) 0 ;
> 
> arg1 = (OpenAccess_4::oaTransform *)jarg1;
> arg2 = (OpenAccess_4::oaOrient *)jarg2;
> OpenAccess_4_oaTransform_orient_set(arg1,arg2);
> }
> 
> 
> SWIGEXPORT void * SWIGSTDCALL CSharp_oaTransform_orient_get(void *
> jarg1) {
> void * jresult ;
> OpenAccess_4::oaTransform *arg1 = (OpenAccess_4::oaTransform *) 0 ;
> OpenAccess_4::oaOrient *result = 0 ;
> 
> arg1 = (OpenAccess_4::oaTransform *)jarg1;
> result = (OpenAccess_4::oaOrient
> *)OpenAccess_4_oaTransform_orient_get(arg1);
> jresult = (void *)result;
> return jresult;
> }
> 
> 
> In other classes, I am having the same problem with float and double.
> How can I get enum, float and double types to work with get/set
> properties?
> 
> 
> John McGehee
> http://www.voom.net


Please cancel this question.  I solved this myself.  The non-trivial reasons I found for this were:

- Not qualifying C++ namespaces throughout the generic type:
   %attributeref(OpenAccess_4::oaComplex<OpenAccess_4::oaFloat>, float, imag)

- I %renamed the enum oaOrientEnum to oaOrient, but %attributeref cannot see it:

    %rename(oaOrient) oaOrientEnum;

    // ...

    // %attributeref cannot see the %rename of oaOrientEnum to oaOrient
    %typemap(cstype) OpenAccess_4::oaOrientEnum "oaOrient /* cstype oaOrientEnum */"
    %typemap(imtype) OpenAccess_4::oaOrientEnum "oaOrient /* imtype oaOrientEnum */"
    %typemap(csvarout, excode=SWIGEXCODE2) OpenAccess_4::oaOrientEnum %{
        /* csvarout oaOrientEnum */
        get {
          oaOrient ret = $imcall;
          return ret;
        } %}
    %attributeref(OpenAccess_4::oaTransform, oaOrientEnum, orient, orient);

That was kind of intense, but fortunately for me, oaOrient is the only enum that is handled via get/set properties.

John McGehee
http://www.voom.net