Re: saveing/loading symbol table of annymous functions

[David Bateman]

John W. Eaton wrote:
> On  6-Apr-2007, David Bateman wrote:
> 
> | Looking at how to read matlab dot-mat files with anonymous function
> | handles in them, it seems that these files contain the local symbol
> | table of the anonymous function. Octave also stores these in
> | tree_anon_fcn_handle, as the octave saving/loading of anonymous function
> | handles are in ov-fcn-handle.cc, we don't have access to the local
> | symbol. This is true both for loading and saving the symbol table.
> | 
> | Can the symbol table be moved from the tree_anon_fcn_handle class to the
> | octave_fcn_handle class? What else does this imply? If it is moved it
> | would then by possible to save the symbol table of the function handle
> | and reload it, as well as implementing the loading of function handles
> | in matlab files..
> 
> I'm not sure why we were duplicating the data for a function directly
> in the tree_anon_fcn_handle class, so I've checked in the following
> change.  Now the tree_anon_fcn_handle object just contains an
> octave_user_function object that contains the parameter list, function
> body, return list, and symbol table.
> 
> The octave_fcn_handle class has an octave_value object that contains
> the function.  You can extract a pointer to the user function object
> and then get the symbol table from there using the new
> octave_user_function::sym_tab method.  Does that give you everything
> you need to write the load/save functions for anonymous function
> handles?
> 
> Thanks,

Yes it should.. I'll look at this later this week and hope to have
load/save corrected for anonymous function handles in the octave native
formats, but equally in hdf5 and matlab formats..

D.