[Swig-user] swig macros for types with spaces eg unsigned short

[David B. <dav...@gm...>]

Dear swig users,

If anyone could help me out with this I would be much obliged. Question is how to use a swig macro with a type with two words: eg unsigned short

TEMPLATE_HELPER(unsigned short,2)
TEMPLATE_HELPER(unsigned short,3)

Those lines give me a syntax error.

I have tried using
typedef unsigned short ushort

This prevents the syntax error from occurring, and the code compiles but when loading the module I've found the %apply directives for ushort didn't work.

The only solution that I got to work was using a template and apply directive for the unsigned short outside the macro.


Your suggestion on how to handle this would be welcome.
Thanks
David









%module pImg
%{
#define SWIG_FILE_WITH_INIT
#include "pImg.h"
#include "pImg.cpp"
%}

%include "numpy.i"

%init %{
import_array();
%}



template<typename PixelType,unsigned int Dim>
class pImg {
public:
     typedef double CoordType;

     // constructor/destructor
     pImg();
     ~pImg();

     // python interface inputs
     void SetScalars(PixelType * scalars, int sz1, int sz2, int sz3);
     void SetInputSpacing(CoordType* spacing, int sz);
     void SetInputOrigin(CoordType* origin, int sz);

     // python interface outputs
     void CopyOutput(PixelType* scalars_cpout, int sz1, int sz2, int sz3);
     void GetOutputPtr(PixelType** scalars_out, int* sz1, int* sz2, int* sz3);
     void GetOutputSpacing(CoordType spacing_out[3]);
     void GetOutputOrigin(CoordType origin_out[3]);

     // example
     void MagGrad();
};

%define TEMPLATE_HELPER(PixType,ImgDim)
%template(pImg_ ## PixType ## ImgDim) pImg<PixType,ImgDim>;
%apply (PixType * IN_ARRAY3, int DIM1, int DIM2, int DIM3){(PixType * scalars, int sz1, int sz2, int sz3)}
%apply (PixType * INPLACE_ARRAY3, int DIM1, int DIM2, int DIM3){(PixType * scalars_cpout, int sz1, int sz2, int sz3)}
%apply (PixType ** ARGOUTVIEW_ARRAY3, int* DIM1, int* DIM2, int* DIM3){(PixType ** scalars_out, int* sz1, int* sz2, int* sz3)}
%enddef

// SWIG macro expansion to force instantiation of relevant types, currently only 2D/3D images supported
// Comment out irrelevant types for faster compiling
TEMPLATE_HELPER(short,2)
TEMPLATE_HELPER(short,3)
TEMPLATE_HELPER(unsigned short,2)
TEMPLATE_HELPER(unsigned short,3)
TEMPLATE_HELPER(float,2)
TEMPLATE_HELPER(float,3)
TEMPLATE_HELPER(double,2)
TEMPLATE_HELPER(double,3)


%apply (double* IN_ARRAY1, int DIM1) {(double* spacing, int sz),(double* origin, int sz)}

// Generic typemap for outputting on return an array of doubles
%typemap(in,numinputs=0) double[ANY] (double temp[$1_dim0]) {
     memset(temp, 0, sizeof temp);
     $1 = temp;
}
%typemap(argout) double[ANY] {
     int i;
     $result = PyList_New($1_dim0);
     for (i = 0; i < $1_dim0; i++) {
         PyObject *o = PyFloat_FromDouble((double) temp$argnum[i]);
         PyList_SetItem($result,i,o);
     }
}