Home | History | Annotate | Download | only in octave
      1 %include <std/std_except.i>
      2 %include <octstdcommon.swg>
      3 
      4 
      5 // Generate the traits for a 'primitive' type, such as 'double',
      6 // for which the SWIG_AsVal and SWIG_From methods are already defined.
      7 
      8 %define %traits_ptypen(Type...)
      9   %fragment(SWIG_Traits_frag(Type),"header",
     10 	    fragment=SWIG_AsVal_frag(Type),
     11 	    fragment=SWIG_From_frag(Type),
     12 	    fragment="StdTraits") {
     13 namespace swig {
     14   template <> struct traits<Type > {
     15     typedef value_category category;
     16     static const char* type_name() { return  #Type; }
     17   };
     18   template <>  struct traits_asval<Type > {
     19     typedef Type value_type;
     20     static int asval(octave_value obj, value_type *val) {
     21       return SWIG_AsVal(Type)(obj, val);
     22     }
     23   };
     24   template <>  struct traits_from<Type > {
     25     typedef Type value_type;
     26     static octave_value from(const value_type& val) {
     27       return SWIG_From(Type)(val);
     28     }
     29   };
     30 }
     31 }
     32 %enddef
     33 
     34 /* Traits for enums. This is bit of a sneaky trick needed because a generic template specialization of enums
     35    is not possible (unless using template meta-programming which SWIG doesn't support because of the explicit
     36    instantiations required using %template). The STL containers define the 'front' method and the typemap
     37    below is used whenever the front method is wrapped returning an enum. This typemap simply picks up the
     38    standard enum typemap, but additionally drags in a fragment containing the traits_asval and traits_from
     39    required in the generated code for enums. */
     40 
     41 %define %traits_enum(Type...)
     42   %fragment("SWIG_Traits_enum_"{Type},"header",
     43 	    fragment=SWIG_AsVal_frag(int),
     44 	    fragment=SWIG_From_frag(int),
     45 	    fragment="StdTraits") {
     46 namespace swig {
     47   template <>  struct traits_asval<Type > {
     48     typedef Type value_type;
     49     static int asval(octave_value obj, value_type *val) {
     50       return SWIG_AsVal(int)(obj, (int *)val);
     51     }
     52   };
     53   template <>  struct traits_from<Type > {
     54     typedef Type value_type;
     55     static octave_value from(const value_type& val) {
     56       return SWIG_From(int)((int)val);
     57     }
     58   };
     59 }
     60 }
     61 %typemap(out, fragment="SWIG_Traits_enum_"{Type}) const enum SWIGTYPE& front %{$typemap(out, const enum SWIGTYPE&)%}
     62 %enddef
     63 
     64 
     65 %include <std/std_common.i>
     66 
     67 //
     68 // Generates the traits for all the known primitive
     69 // C++ types (int, double, ...)
     70 //
     71 %apply_cpptypes(%traits_ptypen);
     72 
     73