Row and column of anonymous function

[Daniel Kraft]

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Hi,

I have a quick question (at least it seems to me that it must be quick
to answer for someone more familiar with the Octave source than I am):

Currently I'm trying to "intercept" all function calls, so that I can
later add timing routines as well as analysis for a first profiler.  It
seems to work well so far (printing out all entering / exists), thanks
to the hints by jwe in some previous email.  However, I'm still
struggling to construct a meaningful "name" of anonymous functions.
Overall, I have this new routine in octave_user_function:

std::string
octave_user_function::profiler_name (void) const
{
  std::ostringstream result;

  if (is_inline_function ())
    result << "anonymous@" << fcn_file_name () << ":42:42";
  else if (is_subfunction ())
    result << parent_fcn_name () << ">" << name ();
  else
    result << name ();

  return result.str ();
}

(profiler_name is a new virtual method of octave_function, but for all
other types (user_script, builtin, mex) it seems to me that just
returning name() does fine.)

So, first:  Does this sound reasonable so far?  At least in very limited
tests it seems to do what I want.  And now more interesting:  How do I
get the line and column where the inline function was defined?  I looked
up through the class hierarchy, but did not find any source location
information in octave_user_function, octave_function, octave_base_value,
octave_value -- probably I missed it; or is it somewhere else?  How do I
get this information, so I can fill in the "42:42" above with the real
values?

Thanks a lot!  When this is done, my next step will be to actually time
the execution and then make the profiler and its collected data
available via built-in functions.  Then the fun can start! ;)

Yours,
Daniel

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