swig/Lib/csharp/complex.i
Vadim Zeitlin ec565f74cf Extend C# complex support to member variables of this type
Define csvar{in,out} typemaps needed to support properties of complex type and
apply the existing cstype and csin ones to them as well.

Add unit test verifying that this works as expected in C# and, also, in
Python, even though no changes were needed there.
2017-04-01 23:51:45 +02:00

58 lines
1.6 KiB
OpenEdge ABL

#ifndef __cplusplus
#error C# module only supports complex in C++ mode.
#endif
%{
#include <complex>
%}
namespace std {
// An extremely simplified subset of std::complex<> which contains just the
// methods we need.
template<typename T>
class complex
{
public:
complex(T re, T im);
T real() const;
T imag() const;
};
} // namespace std
%define swig_complex_typemaps(T)
%typemap(cstype) std::complex<T>, std::complex<T>*, const std::complex<T>& "System.Numerics.Complex"
// The casts in "pre" are needed in order to allow creating std::complex<float>
// from System.Numerics.Complex, which always uses doubles. It relies on the
// fact that the name of the C++ and C# float/double types are the same.
%typemap(csin,
pre=" var cpp$csinput = new Complex_" #T "((" #T ")$csinput.Real, (" #T ")$csinput.Imaginary);"
) std::complex<T>, std::complex<T>*, const std::complex<T>& "Complex_" #T ".getCPtr(cpp$csinput)"
%typemap(csout, excode=SWIGEXCODE) std::complex<T>, const std::complex<T>& {
Complex_##T cppret = new Complex_##T($imcall, $owner);$excode
return new System.Numerics.Complex(cppret.real(), cppret.imag());
}
%typemap(csvarin, excode=SWIGEXCODE2) std::complex<T>* %{
set {
var cppvalue = new Complex_##T((T)value.Real, (T)value.Imaginary);
$imcall;$excode
}
%}
%typemap(csvarout, excode=SWIGEXCODE2) std::complex<T>* %{
get {
var cppret = new Complex_##T($imcall, $owner);$excode
return new System.Numerics.Complex(cppret.real(), cppret.imag());
}
%}
%template(Complex_##T) std::complex<T>;
%enddef
swig_complex_typemaps(double)
swig_complex_typemaps(float)