On Nov 8, 2011, at 2:42 PM, KR wrote: > Hi all, > > I am facing the necessity to parse R code from C-side. As a first > approximation > the goal would be a re-implementation of the R shell (not Rgui). > > I read the document at http://cran.r-project.org/doc/manuals/R-exts.html > section > 5.12, and the related source code example. > > I have some questions: > > 1. I need to declare the types and function signatures that I am going to use > for this task without having to actually include the R headers. Can I safely > declare SEXP according to the following ? > typedef struct SEXP *unknwn_handle;
I'm not sure I understand this really - it doesn't define SEXP. I would expect something like typedef void *SEXP; Which may work for declarations. Note, however, that for the actual code you'll need to include the headers anyway. > More in general, is there a reference document for the C API (listing > function > signatures, and type definitions) ? > http://r.research.att.com/man/R-exts.html is the documentation and the headers (Rinternals.h mainly) is the canonical reference. > 2. If the parsed R code of the working implementation contain commands like > plot(), will the opportune windows pop-up as if I were using the R shell (on > both windows and unix systems) ? > It depends on your settings - plot() uses whatever graphics device you tell it to use, so plot() doesn't decide about that. If you use the proper interactive graphics device *and* make sure you're serving the REPL then it may work. Beware of interactions with your other parts, though, since you are responsible for ensuring that it works. > 3. What initialization do I need to perform to be in exactly the same > starting > state as if I had executed the R shell with the --vanilla option? > It depends on the OS and the way you are initializing R. In the simple case pass the "--vanilla" as the argument when initializing R. Please read the section about embedding, it has examples. Also see the other R GUIs to understand the complexities involved. BTW: you subject has absolutely nothing to do with your question - your'e asking about embedding R ;) Cheers, Simon > > Any help or feedback is appreciated. > > Thank you. > > Kind regard > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > > ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
