Could you pass the environment and then look for the object called ... in it?
f <- function(...) {
.Call("my_fun", environment())
}
I think (and may well be wrong) that you can use standard tools to
find the DOTSXP object in that environment.
Hadley
On Thu, Dec 12, 2013 at 2:32 PM, Romain François
<rom...@r-enthusiasts.com> wrote:
> Hello,
>
> I’m looking for examples on how to manipulate the ... internally, e.g. in a
> .Call or .External function.
>
> I’m particularly interested in accessing the environment in which each
> contribution to ... can be evaluated.
>
> So far, I’m using tricks involving passing down the sys.calls() and
> sys.frames() down to the C function. The documentation in
> http://cran.r-project.org/doc/manuals/R-ints.html#Dot_002ddot_002ddot-arguments
> did not help me a lot.
>
> Romain
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