pretty printing with python

pretty printing with python

[Klaus Rudolph]

Hi all,

I want to start with writing a pretty printer for gdb, but can't find a startup for my own printer.

First: All example contains a line
import gdb.printing
But this results in 
Traceback (most recent call last):
  File "/home/krud/projekte/myppc8000/ppc_8000_938/test.py", line 3, in <module>
    import gdb.printing
ImportError: No module named printing

Must I write that file (which?) myself. Is there an extra download for the printers? Could I install some additional stuff?

Sorry for my confusion!

I hope you could give me a startpoint for the printer things...

Thanks
 Klaus

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Re: pretty printing with python

[Tom Tromey]

>>>>> "Klaus" == Klaus Rudolph <lts-rudolph@gmx.de> writes:

Klaus> I want to start with writing a pretty printer for gdb, but can't
Klaus> find a startup for my own printer.

Klaus> First: All example contains a line
Klaus> import gdb.printing
Klaus> But this results in 
Klaus> Traceback (most recent call last):
Klaus>   File "/home/krud/projekte/myppc8000/ppc_8000_938/test.py", line 3, in <module>
Klaus>     import gdb.printing
Klaus> ImportError: No module named printing

This means your GDB is too old.  `gdb.printing' is not in any release
yet; it will make its debut in 7.3.

You can write printers so that they work with both the new- and
old-styles here.  The libstdc++ printers do this.

Tom

Re: pretty printing with python

[Klaus Rudolph]

> This means your GDB is too old.  `gdb.printing' is not in any release
> yet; it will make its debut in 7.3.
> 
> You can write printers so that they work with both the new- and
> old-styles here.  The libstdc++ printers do this.
> 

How can I enable the libstdc++ printers. Where can I find the files, which contains the "code". Use these printers also python? Is there any special configure/compile option to have printers enabled? Is there a beginner introduction to these topic anywhere? 

Can anyone provide a little more of information?

Thanks
 Klaus


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Re: pretty printing with python

[Tom Tromey]

>>>>> "Klaus" == Klaus Rudolph <lts-rudolph@gmx.de> writes:

Klaus> How can I enable the libstdc++ printers. Where can I find the
Klaus> files, which contains the "code". Use these printers also python?
Klaus> Is there any special configure/compile option to have printers
Klaus> enabled? Is there a beginner introduction to these topic
Klaus> anywhere?

The instructions are here:

    http://sourceware.org/gdb/wiki/STLSupport

Specifically, the first bullet point.

I think many Linux distros ship these and enable them by default.

Yes, these printers are in Python.

There is documentation about writing, installing, and activating
printers in the GDB manual.  It is online on the GDB web site.

Tom