Re: [Swig-user] error in wrapping c++ for python

[William S F. <ws...@fu...>]

Alexandre Gillet wrote:
> Hi,
> 
> I am trying to wrappe a c++ library, but I get an syntax error while 
> running swig on my header file.
> Swig give me : Error: Syntax error in input(3). at line in bold ( line 
> starting with static const int PIX_SIZE    in following code ( last line) )
>  Any idea how I can get rid of the problem.
> Thanks
> Alex
> 
> 
> The header file contains:
> class TrackerImpl : public Tracker
> {
> public:
>     enum {
>         PATTERN_WIDTH = __PATTERN_SIZE_X,
>         PATTERN_HEIGHT = __PATTERN_SIZE_Y,
>         PATTERN_SAMPLE_NUM = __PATTERN_SAMPLE_NUM,
> 
>         MAX_LOAD_PATTERNS = __MAX_LOAD_PATTERNS,
>         MAX_IMAGE_PATTERNS = __MAX_IMAGE_PATTERNS,
>         WORK_SIZE = 1024*MAX_IMAGE_PATTERNS,
> 
> #ifdef _OLD_MSCOMPILER_
>         PIX_FORMAT = __PIX_FORMAT,
> 
>         // calculate pixel size from pixel format
>         PIX_SIZE = PIX_FORMAT==PIXEL_FORMAT_LUM ? 1 :
>                   (PIX_FORMAT==PIXEL_FORMAT_RGB565 ? 2 :
>                   ((PIX_FORMAT==PIXEL_FORMAT_RGB || 
> PIX_FORMAT==PIXEL_FORMAT_BGR) ? 3 : 4) ),
> #endif //_OLD_MSCOMPILER_
> 
> #ifdef SMALL_LUM8_TABLE
>         LUM_TABLE_SIZE = (0xffff >> 6) + 1,
> #else
>         LUM_TABLE_SIZE = 0xffff + 1,
> #endif
>     };
> 
> #ifndef _OLD_MSCOMPILER_
>             // These are used in comparisons with other enums, therefore 
> they
>             // can't be anonymous enums
>             static const int PIX_FORMAT = __PIX_FORMAT;
>             *static const int PIX_SIZE = PIX_FORMAT==PIXEL_FORMAT_LUM ? 
> 1 :(PIX_FORMAT==PIXEL_FORMAT_RGB565 ? 2 :((PIX_FORMAT==PIXEL_FORMAT_RGB 
> || PIX_FORMAT==PIXEL_FORMAT_BGR) ? 3 : 4) );*
> 
> #endif //_OLD_MSCOMPILER_
> 
> 
> 
	
I'm afraid that SWIG doesn't like all the ternary operators. You'll
either have to modify your code to use a #ifdef SWIG macro in your
header file, or avoid using %include of the header file and instead copy
a workaround version into your interface file.

Please raise a bug about this.

William