On Wed, Jun 18, 2014 at 5:07 PM, Romain Francois <rom...@r-enthusiasts.com> wrote:
> Le 18 juin 2014 à 23:54, Tim Keitt <tke...@utexas.edu> a écrit : > > > I'd like to raise a condition other than error or warning. Is that > possible using the Rcpp api? I assume this can be done via R internals, but > I'd prefer not to call error() directly (or is that the recommendation?). > > THK > > > Definitely not. Rf_error should really only be called from C code. If you > call it from C++, there is a great chance you'll lose determinism as > destructors for your c++ objects are very likely not to be called. Most of > the time, it will just mean you'll never release some objects to the > garbage collector, but it could also get you leaks or other nice stuff > depending on what your destructors were supposed to do and did not get a > chance to do. > That was my understanding. Just wanted to be sure it was still the case. > > I'm not sure Rcpp has a way to raise an R condition apart from calling > stop, which usually is good enough. Otherwise, you can borrow from Rcpp11 > and adapt some code from > https://github.com/Rcpp11/Rcpp11/blob/450aade7338c16c34618ad0916003e8ca4fb58a6/inst/include/Rcpp/Condition.h > Ah. I see. Eval "stop" in the global env with the condition as the argument. Clever. THK > > Romain > -- http://www.keittlab.org/
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