[Rd] Can a function know what other function called it?
romain.francois at dbmail.com
Sun May 24 16:23:46 CEST 2009
Duncan Murdoch wrote:
> On 23/05/2009 4:55 PM, Robert Gentleman wrote:
>> Kynn Jones wrote:
>> and you have a breakpoint in bar, you could not (easily)
>> distinguish which of
>> the two calls to bar was active. There is no line counter or anything
>> of that
>> sort available.
> The evaluator doesn't pay any attention to srcref records, so this is
> still true, but it would be possible to keep the srcref on the stack
> as well as all the other info there.
> I've written code (and I think I sent it to you last year) that can do
> things like replacing the statement coming from a particular line of a
> file with whatever code you like; this could be used in writing a nice
> source-level debugger.
> Duncan Murdoch
>> best wishes
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