Re: [PATCH]: MI -var-set-format

[Daniel Jacobowitz <drow at false dot org>]

On Tue, May 02, 2006 at 06:20:04PM +1200, Nick Roberts wrote:
> 
> Currently:
> 
>   -var-evaluate-expression var1
>   ^done,value="18"
> 
>   -var-set-format var1 hexadecimal
>   ^done,format="hexadecimal"
> 
> -var-set-format just repeats the format that has been set which is not
> very useful since presumably the front end sent it in the first place.
> 
> I would like to add the value in the (new) current format, which I find
> much more useful:
> 
>   -var-set-format var1 hexadecimal
>   ^done,format="hexadecimal",value="0x12"
> 
> OK to apply if I update the testsuite accordingly?

This seems reasonable; I doubt anyone will object.

I was wondering how to handle potential error conditions.  I see at
least two:

  - The return of varobj_get_value can be NULL.  You should check for
    that.
  - common_val_print might fail to transform the struct value * into
    a string for some reason.  I believe it may call error() if that
    happens.

Should -var-set-format fail in those cases, or should it omit the
value, or should it supply a default value string (e.g. <error>)?  It
will have changed the varobj's settings, so I don't think ^error
is appropriate.

-- 
Daniel Jacobowitz
CodeSourcery