Re: [Discuss-gnuradio] py_msg_queue__delete_head

[Tom Rondeau]

On Sat, May 10, 2014 at 10:22 PM, chenjian <address@hidden> wrote:

Hi, All

I check the code in GNURadio 3.7.3,  gnuradio-3.7.3/gnuradio-runtime/swig/msg_queue.i

the code: 

 83 #ifdef SWIGPYTHON

 84 %inline %{

 85   gr::message::sptr py_msg_queue__delete_head(gr::msg_queue::sptr q) {

 86     gr::message::sptr msg;

 87     GR_PYTHON_BLOCKING_CODE(

 88         msg = q->delete_head();

 89     )

 90     return msg;

 91   }

 92

 93   void py_msg_queue__insert_tail(gr::msg_queue::sptr q, gr::message::sptr msg) {

 94     GR_PYTHON_BLOCKING_CODE(

 95         q->insert_tail(msg);

 96     )

 97   }

 98 %}

output is located in  "gnuradio-runtime/swig/runtime_swig.py"

the output is like: 

3791 def py_msg_queue__delete_head(*args, **kwargs):

3792   """py_msg_queue__delete_head(sptr q) -> sptr"""

3793   return _runtime_swig.py_msg_queue__delete_head(*args, **kwargs)

3794

3795 def py_msg_queue__insert_tail(*args, **kwargs):

3796   """py_msg_queue__insert_tail(sptr q, sptr msg)"""

3797   return _runtime_swig.py_msg_queue__insert_tail(*args, **kwargs)

Of course, the above in the gnuradio is work well.

I could not understand these swig output. so I write a small .i file to test this

  1 /* -*- c -*- */

  2 // swig2.0 -python *.i

  3 //swig2.0 -python -v -c++ *.i

  4

  5 %module(directors="1") util_swig

  6

  7 #ifdef SWIGPYTHON

  8 

  9

 10 %inline %{

 11   int fun1(int q) {

 12     return q;

 13   }

 14 %}

 15

 16 #endif

but there is one more line (see line 73  )  in the output file *.py 

 71 def fun1(*args):

 72   return _util_swig.fun1(*args)

 73 fun1 = _util_swig.fun1

 74 # This file is compatible with both classic and new-style classes.

Is it some configuration in other place lead the output to be different from the standard "swig command" ?

Thanks & Best Regards.

We are not meant to understand the workings of SWIG...

But seriously, this is a SWIG question and not a GNU Radio question. Best ask the SWIG developers.

Tom