[Discuss-gnuradio] Trouble with SWIG for packet_formatter_default child class

[Nowlan, Sean]

Hi all –

 

I’m working on Tom’s packet_handling branch (github.com/trondeau/gnuradio.git) and building a custom packet formatter. Everything works in C++ land, including QA code. However, SWIG is complaining about undeclared things. I duplicated the CMake and SWIG structures of gnuradio/gr-digital/swig/ for building derived classes such as gr::digital::packet_formatter_counter. Any ideas why this would not work? Thanks!

 

---- first few lines of make errors ----

 

/home/me/code/gr-myoot/build/swig/myoot_swigPYTHON_wrap.cxx: In function ‘PyObject* _wrap_packet_formatter_custom_make(PyObject*, PyObject*, PyObject*)’:

/home/me/code/gr-myoot/build/swig/myoot_swigPYTHON_wrap.cxx:5030:3: error: ‘sptr’ was not declared in this scope

   sptr result;

   ^

/home/me/code/gr-myoot/build/swig/myoot_swigPYTHON_wrap.cxx:5030:8: error: expected ‘;’ before ‘result’

   sptr result;

        ^

/home/me/code/gr-myoot/build/swig/myoot_swigPYTHON_wrap.cxx:5062:7: error: ‘result’ was not declared in this scope

       result = gr::myoot::packet_formatter_custom::make((std::string const &)*arg1,(std::string const &)*arg2,arg3);

       ^

 

---- gr-myoot/swig/myoot_swig.i ----

 

/* -*- c++ -*- */

 

#define MYOOT_API

 

%include "gnuradio.i"                                    // the common stuff

//load generated python docstrings

%include "myoot_swig_doc.i"

%{

#include "myoot/packet_formatter_custom.h"

%}

%include "myoot/packet_formatter_custom.h"

GR_SWIG_BLOCK_MAGIC2(myoot, packet_formatter_custom);

 

// Properly package up non-block objects

%include "packet_formatter_custom.i"

 

 

---- gr-myoot/swig/packet_formatter_custom.i ----

 

%template(packet_formatter_custom_sptr) boost::shared_ptr<gr::myoot::packet_formatter_custom>;

%pythoncode %{

packet_formatter_custom_sptr.__repr__ = lambda self: "<packet_formatter_custom>"

packet_formatter_custom = packet_formatter_custom .make;

%}